8results about How to "Improve assembly construction efficiency" patented technology

The present invention relates to the technical field of bridges, and specifically to a corrugated steel plate profiled steel support system and a construction method; the support system is installed between the webs of the main beams, and the corrugated steel plates and the bridge deck concrete cast on the corrugated steel plates are supported by the support system, and the characteristics are: the support system is composed of a number of transverse square steels and longitudinal square steels installed with each other, the two ends of the transverse square steels are connected between the main beam top plate and the main beam web by connecting plates, the corrugated steel plates are placed on the main beam top plate and the longitudinal square steels, and the bridge deck concrete is cast on the corrugated steel plates. The corrugated steel plate profiled steel support system has the characteristics of simple structure, lightness, reliability, and easy installation. Without greatly increasing the amount of materials and construction measures, it provides effective support for the weaker corrugated steel plates, and ensures the structural performance of the corrugated steel plate composite bridge deck. The system can be widely used in the support structure of various types of corrugated steel plate composite panels.

The construction method comprises the following steps that a cofferdam assembling platform is erected between a temporary steel bridge and a steel pile casing, and a steel cofferdam wall body is assembled to form a bottom section cofferdam; the cofferdam assembling platform is demounted in an auxiliary mode through a hydraulic jack; and hoisting the bottom section cofferdam. The cofferdam assembling platform has the beneficial effects that the arc-shaped limiting plates are arranged on the bearing plates to conduct sectional assembling of the cofferdam wall body, after assembling is completed, the jack moves downwards to enable the supporting brackets to be changed into 180 degrees from original 90 degrees, the transverse supports rotate through the rotating shafts and move in the direction close to the steel pipe piles, dismantling of the cofferdam assembling platform is rapidly completed, and the construction efficiency is improved. The efficiency of cofferdam assembly construction is improved; the bulkhead concrete pouring devices are symmetrically arranged on the annular rail to slide and move, the residual slurry collecting tank is arranged to collect and recycle residual slurry overflowing from the pouring tank, the construction cost is saved, and the concrete pouring speed of the division cabin is increased.

The utility model provides a kind of steel structure building installation positioning device, belong to steel structure building construction technical field.The device structure is ingenious, and it is good to guide, it is convenient to clamp, can be flexibly disassembled, it is convenient for engineering construction use.The electric hoist of the device is fixedly installed on the one side board surface of fixed plate, and a plurality of fixed length's pull cable are fixedly connected on the other side board surface of fixed plate, the free end of each fixed length's pull cable is fixedly bolted screw rod, the drum of electric hoist is wound pull cable, and the free end of pull cable on electric hoist is scattered into multiple strands, and the free end end of each pull cable is fixedly bolted clamping assembly.The device clamps more stable, and the pulling capacity is stronger, and the guiding stability is high, and the alignment accuracy is high, and the assembly construction safety is improved.

This invention relates to the field of building electromechanical installation technology, and discloses a BIM-based integrated layout and modular prefabrication and installation system for electromechanical pipelines. The system includes multi-disciplinary pipelines and integrated supports installed under the exterior building roof slab. The integrated supports include columns, combined steel beams, and pipe clamps. The pipe clamps are configured as variable-angle pipe clamp assemblies, comprising a variable-angle base connected to the combined steel beam and a clamp movably connected to the variable-angle base. The clamp has an adjustable degree of freedom to rotate relative to the horizontal direction within the vertical longitudinal section, so that the clamping axis of the clamp is aligned with the inclined axis of the inclined ramp section. This invention achieves zero-collision pre-assembly before construction, eliminates potential hazards from on-site demolition and alteration, precisely ensures the physical clearance height between driveways and parking spaces, and the modular prefabricated variable-angle damping pipe clamps passively adapt to and conform to the 45-degree inclined ramp path adjusted by BIM.

The utility model relates to a longitudinal slope adjustable steel truss girder assembling support which comprises a base and an assembling jig frame, a vertical supporting rod is welded to the middle position of the upper surface of the base, first hinge plates are arranged on the front side and the rear side of the top of the vertical supporting rod, and second hinge plates are arranged on the front side and the rear side of the middle position of the lower surface of the assembling jig frame. Lower connecting lug plate sets are welded to the left side and the right side of the upper surface of the base, a lower connecting pin shaft is installed between the lower connecting lug plate sets, a lower steel wire rope is connected to the lower connecting pin shaft, upper connecting lug plate sets are correspondingly welded to the left side and the right side of the lower surface of the assembling jig frame, and an upper connecting pin shaft is installed between the upper connecting lug plate sets. Upper steel wire ropes and lower steel wire ropes are connected to the upper connecting pin shafts, and turnbuckles are arranged between the upper steel wire ropes. The beam bottom longitudinal slope adjusting device reduces beam bottom longitudinal slope adjusting difficulty in the on-site assembling construction process of the steel truss girder component, improves assembling construction efficiency of the steel truss girder, and is simple, reliable, low in manufacturing cost and capable of being repeatedly used.

The present invention relates to a quick joint for assembling initial support of corrugated steel in a tunnel, which is used to realize the quick assembly of adjacent corrugated steel plates in the longitudinal and circumferential directions in the initial support of the tunnel. The joint comprises an annular flange welded on the annular end face of the corrugated steel plate, a longitudinal flange welded on the longitudinal end face, an annular joint arranged on the annular flange, and a longitudinal joint arranged on the longitudinal flange. The annular joint is a sliding pin joint, and the longitudinal joint is an insert joint. Compared with the prior art, the annular joint and the longitudinal joint of the present invention respectively adopt the sliding pin and insert assembly methods, and do not need to use bolts, which greatly saves construction manpower and costs.

The present invention relates to the technical field of bridge engineering, and specifically to a concrete structure and construction method for assembled bridges; the technical scheme adopted is: a concrete structure for assembled bridges, including an upper structure and a lower structure, the lower end of the upper structure is provided with a connecting rod extending along the length direction of the upper structure and a plurality of first connecting bars distributed in a circular shape; the connecting rod is located in a circle surrounded by the first connecting bars, the lower end of the first connecting bar is bent toward the upper end of the connecting rod, and the lower part of the first connecting bar is connected to the connecting rod through a tie bar; the upper end of the lower structure is provided with a blind hole and an annular bar, the connecting rod is inserted in the blind hole, and the lower end of the first connecting bar is hooked on the annular bar by the relative movement of the upper structure and the connecting rod; the gap between the lower end of the upper structure and the upper end of the lower structure is filled with a grouting body. The present invention can improve the assembly efficiency of the piers of assembled bridges and ensure the structural strength of the piers, and has the characteristics of convenient assembly and high structural strength.

A construction method of an assembly type entrance and exit structure under an inner supporting system comprises the following steps that firstly, a crane installed at the top of a foundation pit is used for hoisting a bottom block of a first ring of a main body structure connecting section into the foundation pit; secondly, bottom blocks of follow-up components are hoisted in till the length of the trolley can fall down, and a walking track and a chain of the trolley are assembled; thirdly, hoisting splicing of the side wall and the top block of the first ring is conducted; fourthly, after the first ring is spliced, hoisting splicing of a side wall and a top block on a bottom plate is conducted subsequently, and splicing of a main body structure connecting section, a civil defense section, a straight section, a corner section, a straight section and an escalator foundation pit section is completed in sequence; 5, the slope lifting sections are spliced, and different slope section heights and lengths are achieved according to modulus combination; and sixthly, the U-shaped open slope lifting section and the U-shaped open section are spliced.