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

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 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 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.