45results about How to "Improve the level of construction technology" patented technology

The invention discloses a pressure backfill type elastic buried pipe construction method. The method includes the first step of pipe groove excavation and supporting, the second step of pressure steel pipe manufacturing, the third step of pressure steel pipe installation, the fourth step of pipeline backfilling, the fifth step of rolling and leveling, wherein the second step contains the procedures of (1) steel pipe blanking, (2) steel pipe plate rolling, (3) longitudinal joint pairing, (4) steel pipe united section welding and (5) surface treatment; compaction and leveling are carried out on backfilled pipe grooves through a rolling machine to complete the whole procedure. According to the pressure backfill type elastic buried pipe construction method, a pressure steel pipe is regarded as a flexible buried pipe structure, backfilling and compaction are conducted on the periphery of the steel pipe through aggregate, the steel pipe is allowed to freely deform in backfill materials to release stress, and therefore the design and construction technological level of hydraulic and hydro-power engineering of China is improved. The method is suitable for environments with rock breakage, thick covering layers and uneven terrain and has broad application prospects.

The invention provides a novel manufacturing and installing method for a cable holder. Holes are formed in the cable holder according to a certain technological standard, cable grooves, hoops, reinforcing ribs, fireproof division plates and the like can be arranged on supporting arms of the holder as needed, reserved holes are formed in the two walls of a cable trench, and then the cable holder and the walls can be assembled and disassembled fast through expansion bolts. Through material selection, premachining, accessory addition and preliminary combination of the cable holder, the installation procedure can be achieved at one step, so that the labor and the time are saved, the cost is saved, the problem that installation, maintenance, fixation, rust prevention, fire prevention and the like of an existing cable holder are difficult is solved, and the whole cable holder is stable, scientific in design, convenient to manufacture and install, safe and practical. Thus, the novel manufacturing and installing method is worthy of popularization and application.

The invention discloses a comprehensive construction method for a pre-cut groove loop-sealing double-wall steel cofferdam deep water foundation. The method includes the following steps that (1) a trestle and a platform are set up; (2) pile foundation construction is performed; (3) a rotary excavating drill is used for precutting of grooves in a riverbed at the double-wall steel cofferdam blade foot position; (4) cofferdam splicing is conducted; (5) a cofferdam tripping system and a continuous jack are installed; (6) cofferdam tripping is carried out; and (7) the cofferdam bottom is sealed. According to the comprehensive construction method for the pre-cut groove loop-sealing double-wall steel cofferdam deep water foundation under complicated geological conditions, the construction technological level is perfected and improved, the purpose that the construction technology is advanced, reasonable, economical and safe is achieved, experience is provided for similar construction, and an important guiding function is provided for deep water foundation construction and cofferdam construction works.

A plateau mountain foundation pit excavation construction device comprises a braced frame. The braced frame is provided with a walking supporting mechanism and a supporting frame. The supporting frame is perpendicularly provided with a sliding way rack. A lifting support is arranged at the upper end of the sliding way rack. A sliding way is perpendicularly arranged in the sliding way rack. The sliding way rack is provided with a double-stepping transmission mechanism. A rotary driving device connected with the double-stepping transmission mechanism is arranged in the sliding way in a sliding mode. The power output end of the rotary driving device is connected with a drilling device. An excavation mechanism and a soil lifting mechanism are arranged at the lower end of the driving device. According to the plateau mountain foundation pit excavation construction device, design is reasonable, the automation degree is high, manual labor intensity is fully relieved, the safety degree and the reliability degree are high, and work efficiency of excavation of pile holes is improved; according to a line project pile hole foundation excavation mode, the research on foundation fit excavation mechanical operation machines and tools for a plateau mountain transmission line special foundation is conducted, the device is made to meet the technical requirements of a line construction excavation pile foundation, and the construction mechanization degree and construction efficiency of an alternating current transmission line project are improved.

The invention discloses an integral lifting construction method of a veranda of a multi-layer steel structure. The integral lifting construction method includes the process steps of (1), making pre-construction preparations; (2), splicing a roof steel structure; (3), mounting a lifting support; (4), mounting a lifter and a lower lifting point; (5), mounting a steel strand wire and a guide support; (6), performing wire connection and computer synchronization; (7), carrying out normal lifting; (8), mounting a lower veranda structure. The integral lifting construction method of the veranda of the multi-layer steel structure is capable of meeting related requirements of China on building energy conservation, and is simple to operate, precise in construction, ensured in construction quality and shorter in construction period with the help of the whole set of lifting device.

The invention relates to a drilling, excavating and soil lifting device of plateau mountain land foundation pit excavation construction equipment. The drilling, excavating and soil lifting device comprises a support framework, wherein a support frame is arranged on the support framework; two slideway frames are vertically arranged on the support frame; an ascending and descending bracket is arranged between the upper ends of the two slideway frames; a slideway is vertically arranged in each slideway frame; a doubling transmission mechanism is arranged on the slideway frames; a rotation driving device connected with the doubling transmission mechanism is glidingly arranged in the slideways; the power output end of the rotation driving device is connected with a drilling mechanism; and the lower end of the drilling mechanism is provided with an excavating mechanism and a soil lifting mechanism. The drilling, excavating and soil lifting device has the advantages that the design is reasonable; the automation degree is high; the work intensity of workers is sufficiently reduced; the safety degree and the reliability degree are high; the work efficiency of pile hole digging is improved; according to a line project pile hole digging foundation type, the study on plateau mountain land electric transmission line special basic foundation pit mechanization operation machine tools is developed, so that the technical requirements of line construction hole pile foundation digging are met; and the construction mechanization degree and the construction efficiency of an alternating current transmission line project are improved.

The invention discloses alluvial plain karst developing district drilling pile formation wall protection mud which is prepared from the components in parts by mass: 100 parts of water, 6-10 parts of clay, 5-14 parts of sodium bentonite, 0.2-0.3 part of sodium carbonate, 0.002-0.005 part of polyacrylamide, 0.5-0.6 part of carboxymethyl hydroxypropyl cellulose, 0.6-0.9 part of water glass, 0.1-0.3 part of ferric chromium lignin sulfonate, 0.1-0.3 part of barite powder and 0.25-0.5 part of potassium humate. The mud prepared by the invention is suitable for an alluvial plain karst developing district drilling pile formation technology and lowers the probability of occurrence of safety accidents of drilling pile formation. A result of interaction of the mud and a stratum is changed by changingthe performance index of the mud, so that the safety coefficient of construction is increased, and the technical defect of drilling a complex strata is made up.

The invention provides a digging and soil lifting device for plateau mountain foundation pit digging construction equipment. The digging and soil lifting device comprises a support framework, a guide drill rod, a digging mechanism and a soil lifting mechanism, wherein a support frame is arranged on the support framework; two slide passage frames are vertically arranged on the support frame; the upper ends of the two slide passage frames are provided with an ascending and descending support frame; and the outer surface of the guide drill rod is symmetrically provided with two guide rails in the axial direction. The digging and soil lifting device has the advantages that the design is reasonable; the automation degree is high; the work intensity of workers is sufficiently reduced; the safety and reliability degree is high; the work efficiency for digging pile holes is improved; according to the basic line engineering pile hole digging mode, the study on a special basic foundation pit digging mechanical operation machine tool of plateau mountain power transmission lines is developed, so that the technical requirements of line construction hole pile foundation digging can be met; the construction efficiency and the engineering construction mechanization degree of alternating current power transmission lines are improved; and the hole pile digging foundation construction technical level is promoted to be further improved.

The invention relates to a multifunctional combined type concrete lining trolley which is composed of a formwork system, a hydraulic supporting demoulding system, an electric walking system, an automatic measuring system and a vibration system. According to the multifunctional combined type concrete lining trolley, the span of the fracture surface is large, detachment is easy to achieve, the overall stability is high, operation is flexible, and the construction technological level, project quality and construction efficiency can be improved effectively.

The invention discloses a building shading cast-in-place concrete lattice wall and a construction method of the building shading cast-in-place concrete lattice wall. The building shading cast-in-place concrete lattice wall comprises a concrete cast lattice wall body and steel reinforcements pre-embedded in the wall body. The construction method of the building shading cast-in-place concrete lattice wall comprises the following steps: 1), manufacturing and mounting a template, wherein the template comprises an outer side template and an inner side template spliced with each other, and a plurality of core templates clamped and fixed between the outer side template and the inner side template; wherein each core template comprises a keel and an inclined supporting structure in the keel; 2), manufacturing the steel reinforcements layer by layer according to the cast layer level of the concrete of the lattice wall; 3), constructing the concrete layer by layer; and 4), disassembling the templates and maintaining the concrete. According to the building shading cast-in-place concrete lattice wall and the construction method, the concrete surface of the building shading cast-in-place concrete lattice wall is not necessarily decorated, and the natural performance and artful texture of the concrete are shown, in this way, the purposes of strengthening the artistic effect, saving the construction cost and shortening the construction period are fulfilled.

The invention discloses a stratum hierarchical displacement monitoring method. Hierarchical displacement is monitored by means of combining single-point displacement gauge and hydrostatic water gauge, measuring points of different depth in the longitudinal direction are converted to the same place through a coordinate transformation mode, and the purpose of hierarchical displacement is realized. The method includes the steps of 1), arranging a hardening platform in the positions of the earth's surface of measuring points so as to have monitoring facilitated; 2), drilling for excavation and mounting the single-point displacement gauge; 3), after mounting of the single-point displacement gauge, welding a clean tripod to the side wall of a steel cylinder and then mounting the hydrostatic water gauge; 4), connecting cables led out from the single-point displacement gauge and the hydrostatic water gauge to an automated collection unit for real-time monitoring.

The invention provides a real-time overfilling alarm method for piling construction of a pile machine. The real-time overfilling alarm method for the piling construction of the pile machine comprisesthe steps that a RTK double antenna system is mounted on the upper surface of the pile machine, and the height difference of current main and auxiliary antennas is calculated through AVR data output by the RTK double antenna system; depth information of a pile head is calculated by combining the pile machine size and pile machine facing information; and the current pile depth is showed in software, a pile depth value is monitored in real time during pile pulling, and a manipulator is reminded and warned through sound-light alarm and screen blink modes when the pile depth value reaches a critical value. According to the real-time overfilling alarm method for the piling construction of the pile machine, users are centered, accurate control of the piling depth of the pile machine is realizedin the whole piling process, errors of man-made judging the pie depth are reduced, the construction quality of engineering is improved, and the construction process level is improved.

Plateau mountain foundation pit excavation construction equipment, including a support frame, the support frame is provided with a walking support mechanism and a support frame, the support frame is vertically provided with a slide frame, the upper end of the slide frame is provided with a landing bracket, and the slide frame is vertically installed. There is a slideway, the slideway frame is provided with a double advance transmission mechanism, a rotary drive device connected to the double advance transmission mechanism is slidably arranged in the slideway, the power output end of the rotary drive device is connected with a drilling device, and the lower end of the drilling device is provided with Excavation mechanism and soil lifting mechanism. The invention has reasonable design, high degree of automation, fully reduces labor intensity, high safety and reliability, and improves the work efficiency of digging pile holes. The research on the excavation mechanization operation equipment makes it meet the technical requirements of the line construction excavation pile foundation, and improves the construction mechanization degree and construction efficiency of the AC transmission line project.

The invention provides an installation method of a diameter-expanded flexible busbar of a substation. The method comprises the following steps of assembling an insulator string; discharging the diameter-expanded flexible busbar; crimping the diameter-expanded flexible busbar; sequentially installing a fitting and the insulator string in the diameter-expanded flexible busbar of which crimping is completed; and hoisting the diameter-expanded flexible busbar of which installation is completed. According to the installation method of the diameter-expanded flexible busbar of the substation, provided by the invention, a sequence of installing the diameter-expanded flexible busbar is proposed, the guidance of installing the diameter-expanded flexible busbar is achieved, the diameter-expanded flexible busbar can be accurately installed by a constructor, repeated construction is prevented, and the construction efficiency is improved; meanwhile, the construction process level is also improved; and moreover, a guarantee is also provided for normal running of the substation in future.

The embodiment of the invention discloses a bailey beam support construction method based on a variable section capping beam and a support building system. The bailey beam support construction methodbased on the variable section capping beam comprises the steps of step S1, construction of a support foundation; step S2, mounting of steel uprights; step S3, erection of multiple groups of bailey beam groups; step S4, mounting of upper I-shaped steel; step S5, laying of square timber and a bottom die; and step S6, construction of the variable section capping beam. According to the bailey beam support construction method based on the variable section capping beam and the support building system, as the support building system is a support system adopting the steel uprights+bailey beams+I-shaped steels, the pouring quality and safety of a diagonal bracing system at the variable section part can be guaranteed, the construction progress is accelerated, the construction period is shortened, the cost of the support construction system is also reduced, and the amount of labor used is reduced; with the continuous advancement of construction technology, it is particularly important to pay attention to the construction efficiency and quality; and the adoption of a bailey support system is undoubtedly more time-saving, economic, scientific and feasible.

The invention discloses an offshore bridge girder erection machine and a construction method thereof, and relates to the technical field of offshore platform construction. The construction method of the offshore bridge girder erection machine comprises the steps of bridge girder erection machine assembling, bridge girder erection machine testing, bridge girder erection machine in-place placing, prefabricated part installing and bridge girder erection machine moving. According to the construction method of the offshore bridge girder erection machine, improvement is performed on the basis of bridge girder erection machines for highways and railways, a front supporting leg structure of the bridge girder erection machine is transformed, and is suitable for requirements for different steel pipepile intervals and loads; meanwhile, the transition joints are arranged on the steel pipe piles of the front supporting legs, and the function of front-back and left-right adjustment is achieved so as to adapt to the horizontal construction deviation of the steel pipe piles or the concrete piles on the lower portion; the middle supporting leg structure is improved, so that the middle supporting leg structure can adapt to the characteristic that steel bars on pier caps at the tops of steel pipe piles are complex, water operation is changed into road construction finally, influences of adversefactors such as surges and tides are reduced, meanwhile, the construction progress is accelerated, the installation quality is improved, and the construction cost is reduced.

The invention discloses an underground gas storage and a site selection and transformation method for reconstructing the underground gas storage by using a waste mine hole, high-pressure gas is sealed and stored by fully utilizing good sealing performance, low permeability and underground water pressure of a natural stratum, and the construction cost of sealing measures of the underground gas storage can be greatly reduced; meanwhile, underground waste spaces such as the goaf of the waste mine cave and various waste caverns are utilized, and the utilization efficiency of the underground waste spaces is greatly improved; in addition, the abandoned mine cave roof determined according to the site selection step has the advantages of being good in deformation resistance, high in strength and the like, and therefore large-scale reinforcement treatment does not need to be conducted on an original abandoned goaf and a roadway of the original abandoned goaf, and the construction cost of project reconstruction is greatly reduced. The anti-seepage structure is simple, the engineering construction process is simple, the construction technical difficulty is small, and the construction technical level of reconstructing a large-scale underground gas storage by using the abandoned mine can be further improved.

The invention relates to the technical field of high-rise building integrated construction, in particular to a high-rise building integrated construction method which comprises the following steps that S1, a vertical formwork in a formwork system is driven by a lifting assembly on a top steel structure to descend; s2, the vertical mold plate is subjected to mold closing under the operation of an automatic mold opening and closing device; s3, the vertical formwork falls to the N-layer ground; s4, the vertical formwork is separated from a lifting assembly on the top steel structure; and S5, the concrete distribution robot is lifted upwards by the height of one floor, and the concrete distribution robot climbs from the interior of the elevator shaft in a hydraulic self-climbing mode. The purposes of reducing the manual operation workload and improving the industrialization level of building construction are achieved, the construction method is advanced, reasonable and efficient, the construction cost is effectively reduced, the construction period is shortened, meanwhile, orderly proceeding of all procedures is improved, and the construction progress is improved on the premise that the project quality is guaranteed.

The invention discloses a reinforcing steel bar sleeve glue pouring connection structure. The connection structure comprises a sleeve and a binder used for connecting reinforcing steel bars, the two ends of the sleeve are each provided with a connector facilitating insertion of the reinforcing steel bars, the middle of the sleeve is further provided with a pouring hole used for pouring the binder, and a screw thread used for increasing the bite force of the binder is further arranged in the sleeve. During use, through the steps of sleeve installation, binder inspection, binder pouring, maintenance, fixing material removal, quality inspection and the like, the steel bars are connected, the bonding effect of the binder is fully played, the defects of steel bar welding and mechanical connection are overcome, the construction is feasible, the quality is ensured to be reliable, and the economical efficiency is high.

The invention provides a method for calculating real-time pile depth by using an AVR combined with a pile machine model. The method installs avr dual antennas on a CFG pile machine, and the absolute elevation difference between the two antennas is calculated according to the result of antenna settlement, and then the depth that the hammer head of the current pile machine enters the ground is calculated according to the dimensions of the pile machine itself, wherein the avr dual antennas are connected with a data receiving and settlement module, the data receiving and settlement module is connected with an arithmetic calculation module, and the arithmetic calculation module is connected with a display module. The invention takes the user as the center, improves the supervision accuracy of the supervising party to the pile driving depth, reduces the error of artificial calculation, improves the construction quality of the project, and improves the construction technology level.

The invention discloses an opening-closing type salvaging device for dilled pipe drill bits. A housing is a thin-wall cylindrical tapered barrel; a limiting rod passes through from a housing; an upper limiting bolt and a lower limiting bolt are welded on the limiting rod; four rod outlet windows are vertically formed in the side wall of the housing; two connecting rods are separately welded horizontally in two vertical inside centers of the rod outlet windows; guide slide sleeves are hinged between the two connecting rods in the rod outlet windows by taking the side wall as the center; a limiting slide sleeve is arranged between the upper limiting bolt and the lower limiting bolt of the limiting rod; movable rods are connected to the limiting slide sleeve in a manner of enabling a fixing rod to pass through a horizontal hole; the four movable rods on the limiting slide sleeve separately pass through four guide slide sleeves in corresponding directions to get out from the housing. The limiting slide sleeve upwards slides along the limiting rod, the movable rods are opened and the limiting slide sleeve downwards slides along the limiting rod, so that the movable rods are closed. The device realizes multi-angle all-around salvaging work for multiple drill bits in drilled holes and karst caves, and has great significance on improving the technical level of pile foundation construction.

The invention provides a CFG piling machine construction piling depth monitoring system. A laser distance measuring sensor is installed on a gravel pile machine, the distance between the top of a pilemachine support and the head of a pile pipe is measured, by combining the size of the pile machine and orientation information of the pile machine, the depth information of the pile head is calculated, the current pile depth is displayed in software, the pile depth value is monitored in real time during pile pulling, when the critical value is reached, the operator is prompted and warned throughsound and light alarm and screen flashing. The CFG piling machine construction piling depth monitoring system is user-oriented, accurate control over the pile driving depth of the pile machine is achieved in the whole pile driving process, errors caused by manual pile depth judgment are reduced, the construction quality of a project is improved, and the construction technology level is improved.

The invention provides a mounting construction method for a joining truss of a pipe truss structure system, and belongs to the technical field of pipe truss mounting construction. Through the form ofarranging a connecting sleeve at the end of a reinforcing rod piece, the length of the reinforcing rod piece is adjusted through extending and retracting of the connecting sleeve, and thus the problemof interference of the reinforcing rod piece and a main rod is solved; an intersecting opening is formed in one end of the connecting sleeve to be in welded connection with the main rod, the other end of the connecting sleeve and the reinforcing rod piece are subjected to girth welding, four plug welding holes are symmetrically formed in the connecting sleeve, and the plug welding holes and the reinforcing rod piece are subjected to plug welding to form welding seams. The mounting construction method has the advantages that the problem of intersecting opening interference of reinforcing rod piece mounting in a limited space is solved in the form of the fabricated connecting sleeve, and the butting quality of the reinforcing rod piece and the truss main rod is effectively improved; and inpipe truss mounting construction, the construction quality is good, the efficiency is high, economic benefits are obvious, the construction technical level of a pipe truss structure is increased, anddevelopment of the steel structure industry is promoted.

The invention discloses a double-layer laminated type prefabricated pavement and a construction method thereof. According to the pavement, the advantages of a traditional cement and asphalt pavement are retained, the limitation of a traditional fabricated road on transportation and connection is broken through, and the standardized operation efficiency and technology level of pavement paving are greatly improved while the drainage performance of the pavement is enhanced. Waste plastic modified asphalt and recycled building materials are adopted, so that the concept of environment-friendly development is reflected; and through prefabrication and standardized assembly, the road construction cost can be lowered, the construction efficiency is improved, and interference of the traditional construction process on residents along the line is reduced. Considerable economic and social benefits are expected to be produced, development of a novel road paving structure and material is promoted, and development of the road engineering industry is promoted.

The invention discloses equipment for resisting floating and sinking of a capsule under-reamed anchor. Floating and sinking of the capsule under-reamed anchor in a grouting process can be prevented bya guide screw connected with a capsule under-reamed anchor body, an anti-sinking controller on the guide screw, a steel beam and a fixing screw in an anti-floating unit as well as an anti-floating controller, a first clamping piece and a second clamping piece which are arranged on the fixing screw, so that height of the construction anchor exposed out of the horizon can be the expected height, welding or cutting is not needed any more, construction period is shortened, technological level of construction is increased, and materials and labor cost are saved. The invention further discloses a use method of the equipment for resisting floating and sinking of the capsule under-reamed anchor.

The invention discloses a guide limiting block for a pipe shoe and an installation method of the guide limiting block. The contour of the cross section of the guide limiting block is in a trunk shape, and the guide limiting block comprises a connecting edge, an inwards-concave section, a guide edge, a limiting edge and an outer contour edge which are connected end to end in the clockwise direction; the connecting edge, the inwards-concave section, the guide edge, the limiting edge and the outer contour edge extend in the thickness direction to form a connecting face, an inwards-concave face, a guide face, a limiting face and an outer contour face respectively; the guide limiting block is of a trunk-shaped structure, the connecting face is used for fixing, the inwards-concave face enlarges the gap between the guide limiting block and a pipe shoe bottom plate, welding and coating are facilitated; the guide face and the limiting face are arranged to limit the movement direction of the pipe shoe bottom plate and a pipeline, the guide and limiting effects are achieved, installation is convenient, and the construction procedure is optimized; and by applying the guide limiting block, the problem of corrosion prevention dead corners of the guide limiting block of a pipe shoe of a process pipeline of an offshore oil platform is solved, potential engineering quality hazards can be effectively avoided, and the effects of reducing economic cost and facilitating installation are achieved.