32results about How to "Engineering quality is easy to guarantee" patented technology

The invention discloses a steel anchor pipe reinforced weathered rock stratum reinforced balance weight type retaining wall structure and a construction method, the weathered rock stratum is reinforced by the steel anchor pipes through grouting inside and outside the pipes, the bearing capacity of a treated rock mass foundation is greatly improved, and the foundation bearing requirement of an upper embankment retaining structure is completely met. Meanwhile, the stability of the treated weathered rock stratum is improved, the steel anchor pipe can also serve as a side slope anti-sliding structure, and the effect of preventing sliding and reducing disasters on an original weathered rock stratum side slope is achieved. According to the reinforced soil (balanced weight type) retaining wall, breakthrough of the wall thickness size of a traditional retaining wall is achieved, and meanwhile laying of the geogrid has great significance for the stability of the retaining wall. The constructionmethod is mature in technology and reasonable in procedure, has the advantage of rapid construction and has outstanding economic benefits. The method has a wide prospect in application of road embankment filling and retaining structures on weathered rock stratum geology.

The invention provides a strengthened anchoring fabricated type concrete retaining wall, and belongs to the technical field of city underground road engineering and public facilities. Convex opening concrete prefabricated T-shaped plates are located on original soil, and arc-shaped concave connectors of concave-convex opening concrete fabricated flat plates are matched with arc-shaped convex connectors of the convex opening concrete prefabricated T-shaped plates; and a spiral long extending arm provided with a strengthening anchoring tie bar is horizontal, and the other one inclines downwardsby 30 degrees-45 degrees to be crossed with the horizontal spiral long extending arm on the lower layer. The strengthened anchoring fabricated type concrete retaining wall has the beneficial effects that mold plates can be saved, the construction condition during manufacturing is improved, the labor productivity is improved, the construction progress is accelerated, and the construction quality isguaranteed. Standardization, light and thin making and universalization of the fabricated type concrete retaining wall are achieved. The anchoring performance, the integrality, the stability and thesafety performance of the concrete retaining wall are obviously improved, cost is low, and project quality is easily guaranteed.

The invention discloses a special clamping tool for stepping board assembly. The clamping tool includes a top board, baffle plates and an adjusting bolt; and the clamping tool is characterized in thatthe length of the top board (3) determines according to the width of a stepping board which is 150 mm; baffle plates include a first baffle plate (4) and a second baffle plate (5) which are same in size; a nut (7) is fixedly welded in a through hole opening on the inner side of the second baffle plate; the nut matches a bolt (6), so that one end of the bolt is fixedly welded with a backing plate(8), and the other end of the bolt is placed on the outer side of the second baffle plate; and the screw length of the bolt can movably adjust the distance between the backing plate and the first baffle plate. The clamping tool and application method have advantages of being simple in clamping device structure, convenient in making, concise in construction, convenient and short in construction period, and can ensure engineering quality, so that large scale stepping board assembly engineering can be realized, and high precision rapid assembly can be achieved.

The invention discloses a unit-type assembled sun room, which includes: a supporting frame built on the construction site of the sun room, an upper unit plate used to form the roof of the sun room and sealed and transparent, and a roof unit board used to form the sun room The side wall is light-transmitting and can open a window unit panel, and the front facade wall of the sun room is formed, and the door unit panel is light-transmitting and allows people to enter and exit the sun room. The side of the upper roof unit plate facing the front wall is inclined downward to form an inclined roof plate, and the upper roof unit plate is fixed after being overlapped with the supporting frame, and the angle at which the upper roof unit plate is overlapped with the supporting frame is adjustable. The window unit plate is arranged vertically and its side and bottom are respectively detachably connected with the corresponding supporting frame, and the top of the window unit plate is detachably connected with the corresponding upper top unit plate. The door unit board is arranged vertically and its side and bottom are respectively detachably connected with the correspondingly arranged support frame, and the top of the door unit board is detachably connected with the correspondingly arranged upper top unit board.

The invention discloses a method for lifting concrete in an ultrahigh reducing steel pipe column. The method includes the steps of firstly, pumping water, performing pressuring and lifting with the water instead of concrete until the water overflows out of the top of the column, making small holes at the bottom of the column to discharge the water after lifting and pressuring, and soldering the small holes; secondly, lifting at one cubic meter of cement mortar, lifting concrete closely following the cement mortar, making a runner in the front of the cement mortar, and lifting the concrete once. The inner surface of the steel pipe column is lubricated by pumping the water first and making the front runner with the cement mortar, resistance of friction between the concrete and the inner surface of the steel pipe column is reduced greatly, and the concrete following the cement mortar can be lifted smoothly. Therefore, the method allows the concrete in the ultrahigh reducing steel pipe column to be lifted once, construction efficiency is high, and construction quality is guaranteed easily.

The invention relates to a special strong combination column and combination beam frame with internally-arranged core columns and a construction method of the special strong combination column and combination beam frame. The special strong combination column and combination beam frame with the internally-arranged core columns is provided with internally-arranged asymmetric steel rib or plastic rib prestressed concrete combination beams and reinforcing bar concrete combination columns with the internally-arranged core columns, the combination beams are horizontally arranged between the combination columns, and the combination beams are connected with the combination columns at intersections through joints. The core columns are formed by pouring steel ribs or plastic ribs and concrete together, longitudinal ribs are distributed around the core columns and are wrapped by stirrups, and the core columns are placed in the reinforcing bar concrete columns. Transverse stiffening ribs are arranged on the steel ribs or the plastic ribs in the combination beams, the steel ribs or the plastic ribs at the midspan positions are arranged on the lower portions of the combination beams, the steel ribs or the plastic ribs on supports are arranged on the upper portions of the combination beams, and prestressed ribs are arranged in the combined beams in the length direction. The prestressed ribs on the beam and column joints penetrate through two sides of the core columns, and are tensioned and anchored at the ends of the combination columns. The axial pressure performance of the columns can be improved, the section size of the combination columns is small, the core columns can be poured on the scene and can also be prefabricated in factories, field mounting is achieved, workloads are reduced, and the construction period is shortened.

The invention discloses a reinforced inner arch concrete block retaining wall. The wall is formed by building several rows of blocks, each row of blocks are formed by alternately arranging rib-penetrating soil-retaining blocks and inner clamping soil-retaining blocks, the rib-penetrating soil-retaining blocks are mutually staggered, and the inner clamping soil-retaining blocks are mutually staggered; rib-penetrating holes of upper and lower rib-penetrating soil-retaining building blocks are coincided, and tie reinforcing penetrating ribs penetrate the rib-penetrating holes; and each tie reinforcing penetrating rib is connected to a reinforcing tie reinforcing mesh. According to the wall, the anchoring performance, integrity and stability of the concrete retaining wall can be remarkably improved, due to adoption of several mutually-staggered arch structures, and combination of series reinforcing tie reinforcing meshes, the bearing capacity of a wall body is remarkably improved, the safety performance is remarkably improved, the cost is low, and the engineering quality is easy to guarantee.

Disclosed is a connecting component used for directly assembling a curtain wall board on a curtain wall vertical frame. The connecting component comprises a hollow straight web girder and two wing beams, wherein the two wing beams are connected with the web girder through T-shaped components. A C-shaped component is arranged at one end of the web girder, flange nuts are mounted at the tops and the bottoms of the two wing beams, a wing plate of one flange nut is clamped by a groove of the C-shaped component, a web plate of the C-shaped component is provided with a hole which a threaded rod penetrates through, and when the corresponding flange nut is screwed, the threaded rod mounted on the corresponding flange nut and in the hole of the web plate of the C-shaped component can be adjusted to go in and out, so that the three-directional adjusting function is achieved. The connecting component has the advantages that the construction technology content is low, accurate adjustment of the relative position between the curtain wall board and the curtain wall vertical frame is conveniently achieved, and due to the fact that the connecting component is a finished product manufactured by a factory, quality is reliable; controllability of construction quality is good, and material consumption is low; the quantity of garbage on the construction site is small, dust pollution caused in a curtain wall board on-site cutting and hole forming process and occupational diseases of construction workers do not exist, environmental protection is better achieved, and the occupational health of the construction workers is effectively guaranteed.

The invention provides an early-dismantling support of an aluminum alloy top plate which comprises a support main body and a template support connected on the support main body, wherein the support main body consists of a vertical steel pipe, a lower connecting plate welded on the lower end of the vertical steel pipe, an upper support plate welded on the upper end of the vertical steel pipe and limit sheets welded at the middle part of the vertical steel pipe; the vertical steel pipe is sheathed with a jacking which is formed by casting cast steel; and the vertical steel pipe between the jacking and the upper support plate is also sheathed with a slide support which is formed by welding steel plates. The early-dismantling support has the advantages of fast and convenient dismantling, highworking efficiency, simple structure, high stress intensity, convenient and flexible operation, easily mastered construction process, accelerated construction progress and shortened construction period.

The invention provides an underpinning device and an underpinning method for a bridge and a building. The underpinning device comprises a plurality of columnar pile foundations arranged along a bridge pier of the bridge or around a building foundation, wherein flexible ropes are stretched among the tops of the pile foundations; different flexible ropes are arranged in a netlike form; and the two ends of the flexible ropes are anchored on the pile foundations or ground anchors. The method comprises the following steps: (1) piling around the bridge or the building and inserting steel pipes, wherein the top ends of the steel pipes are higher than an original foundation; (2) inserting reinforcing steel bars and pouring concrete into the steel pipes and solidifying the concrete to form the pile foundations; (3) arranging the flexible ropes on the tops of the pile foundations in the netlike form, tensioning the flexible ropes by using a tensioner, supporting the bridge or the building and anchoring the two ends of the flexible ropes; (4) treating the original foundation, detaching the original foundation, adding necessary facilities and building a new foundation; and (5) placing the bridge or the building on the new foundation. A composite rope supporting structure is used, so the bridge or the building can be underpinned, construction is performed easily and the engineering qualityis easy to ensure.

The invention relates to a self-balancing external prestressing strengthening method for a bridge structure. The self-balancing external prestressing strengthening method is characterized by comprising the following steps of: carrying out interface processing at a connecting place (5) of a top flange of a concrete beam; (2) inserting reinforced bars at the connecting place (5) of the top flange of the concrete beam; (3) installing the reinforced bars at the connecting place (5) of the top flange of the concrete beam; (4) installing the reinforced bar of a steering block (6) and a diverter (9) at the bottom of the beam; (5) symmetrically adding diaphragm plates at a place far away from the end of the beam by 2-3m, and installing an anchorage device (10); (6) concreting the connecting place (5) of the top flange of the beam, the steering block (6) and the newly added diaphragm plates (8); and (7) installing and tensioning an anchoring external cable, thus obtaining a self-balancing external prestressing strengthening structure. An external prestressing system can be used for detecting and adjusting the stress of the cable at any time, inspecting the corrosion condition of the cable and can also be used for maintaining and replacing the cable when necessary. The self-compacting concrete solves the problems of dense reinforcement assembly, complex structure, narrow space of formworks and traditional structural members, cavities caused by the blocking of aggregates and the like, effectively ensures the dense degree of placing concrete and increases the strengthening effect. The self-balancing external prestressing strengthening method can be used for strengthening heavy railroad brides, concrete box girders and T beams.

The invention relates to a box formwork construction method for an assembly type box formwork hollow floor. The box formwork construction method comprises the following steps of: manufacturing concrete wedge-shaped cushion blocks according to the design thickness of a floor lower flange cast-in-place layer; mounting floor slab bottom ribs, then arranging the wedge-shaped cushion blocks at positions shown in a box formwork design diagram, arranging four wedge-shaped cushion blocks at the bottom of each box formwork, and keeping the small-head ends of the wedge-shaped cushion blocks downwards and the large-head ends of the wedge-shaped cushion blocks upwards; arranging the box formworks at positions of the box formwork design diagram, placing the box formworks on the wedge-shaped cushion blocks, and supporting and positioning the box formworks through the four wedge-shaped cushion blocks; after the box formworks are installed, mounting floor slab surface ribs and inter-box-formwork rib beam steel bars, arranging anti-floating steel bars on the box formworks while the floor slab surface ribs are installed, arranging the anti-floating steel bars in the middles of the upper surfaces ofthe box formworks, and fixing the anti-floating steel bars to a floor slab bottom formwork through iron wires. On the premise that the construction quality is guaranteed, the construction difficulty is reduced, the construction efficiency is improved, and position conflicts between the box formwork positioning structure and the structural stress ribs are avoided.

The invention belongs to the technical field of retaining walls, and specifically relates to a prefabricated L-shaped concrete multi-layer and multi-step retaining wall, including L-shaped stepped prefabricated concrete retaining wall panels, concrete columns, concrete beams, etc. On the soil, the connecting groove at the bottom of the L-shaped stepped precast concrete retaining wall panel fits with the tooth tenon of the bottom plate with toothed tenon; the L-shaped stepped precast concrete retaining wall panel with more than two floors is assembled from the bottom to the upper layer, and the L-shaped The stepped prefabricated concrete retaining wall panels are connected to the concrete beams, the concrete beams are connected to the concrete columns one by one, and the filling soil is filled between the L-shaped stepped prefabricated concrete retaining wall panels and the original soil. The invention can improve the anchoring performance, integrity and stability of the concrete retaining wall. The L-shaped stepped prefabricated concrete retaining wall panels, concrete columns and concrete beams form a spatially distributed retaining wall, which can improve the wall bearing capacity and safety performance. Improvement, and the cost is low, and the project quality is easy to guarantee.

The invention discloses a structure and a construction method of a steel anchor pipe reinforcing the weathered rock layer with reinforcement and balance weight type retaining wall. The steel anchor pipe of the present invention realizes the reinforcement treatment of the weathered rock layer through grouting inside and outside the pipe, and the treated rock mass foundation bears The strength is greatly improved, fully meeting the foundation bearing requirements of the upper embankment retaining structure; at the same time, the stability of the weathered rock layer after treatment is improved, and the steel anchor pipe can also be used as a slope anti-slide structure, which realizes the anti-slip and disaster reduction of the original weathered rock layer slope The effect; the reinforced earth (counterweight type) retaining wall of the present invention has realized the breakthrough of traditional retaining wall wall thickness dimension, and the laying of geogrid has greater meaning for retaining wall stability simultaneously; The present invention The construction method is mature, the process is reasonable, and it has the advantages of rapid construction and outstanding economic benefits. The invention has broad prospects for the geological application of weathered rock formations to filling road embankments and retaining structures.

A construction method for integrally hoisting a large-size multi-edge-and-corner overhanging truss is disclosed. Integral assembling of a steel pipe truss is conducted on site, and integral hoisting is conducted after assembling is completed; the truss is connected with three welding positions in a butt-joint mode and then is welded firmly; two 500 t all-terrain cranes and a 350 t all-terrain crane are adopted to hoist the whole truss simultaneously, and step-by-step hoisting is conducted from south to north; the truss is totally provided with three main stress support joints which are all fixed by adopting butt welding, a third calibration point support is located at the top of the truss, a welded ball joint at the position of the third calibration point is a support point of a steel rainshed grid frame actually, a first calibration point support and a second calibration point support are located on both the left and right sides of the bottom of the truss correspondingly, and the first calibration point support and the second calibration point support are global stress supporting points of the truss. The construction method for integrally hoisting the large-size multi-edge-and-corner overhanging truss has the characteristics that the construction safety is high, the construction period is short, the engineering quality is easy to guarantee, the ground integral assembling efficiency is high, and the construction cost is reduced greatly.

The invention provides a fabricated concrete double-shaped combination block retaining wall, and belongs to the technical field of supporting construction. In the same layer, concrete fusiform blocks and concrete I-shaped blocks are mutually alternated, fusiform block front inclined ribs and I-shaped block front inclined ribs are matched with each other, fusiform block rear inclined ribs and I-shaped block rear inclined ribs are matched with each other, groove-shaped groove-shaped ribs are arranged in second fusiform block filling holes of the concrete fusiform blocks, tie bars penetrate through first round holes and second round holes of the concrete fusiform blocks and are connected with the groove-shaped ribs, the other ends of the tie bars horizontally extend to the original soil direction, and joints of the concrete fusiform blocks and the concrete I-shaped blocks on the adjacent layers are mutually staggered. The fabricated concrete double-shaped combination block retaining wall has the beneficial effects that the anchoring performance and stability of the concrete retaining wall are remarkably improved, the anti-overturning capacity of the retaining wall is effectively improved, by adopting a series clamping and locking type design technology, the integrality is remarkably improved, the bearing capacity and safety performance of a wall body are remarkably improved, the cost is low, and the engineering quality is easy to guarantee.