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149results about How to "Improve construction progress" patented technology

Prefabricated middle partition wall structure of tunnel ventilation inclined shaft

The utility model relates to a prefabricated middle partition wall structure of a tunnel ventilation inclined shaft. The prefabricated middle partition wall structure at least comprises a bottom supporting structure, a steel supporting assembly and a prefabricated modular wallboard. A positioning groove is formed in the top face of the bottom supporting structure, and the bottom of the steel supporting assembly is embedded into the positioning groove and fixed. The prefabricated modular wallboard is formed by splicing a plurality of prefabricated slabs, the adjacent prefabricated slabs are connected through tongue-and-groove structures which are matched in a concave-convex mode, and the tongue-and-groove joints are filled with sealing materials. The steel supporting assemblies are longitudinally arranged at intervals, and the tops of the steel supporting assemblies are fixed to a tunnel lining to form a steel-concrete combined structure for supporting the prefabricated modular wallboard. The steel supporting assembly and the prefabricated modular wall plate form a steel-concrete prefabricated structure, and the stability of the whole structure is enhanced. By adopting the autoclaved aerated concrete precast block material and the concave-convex groove embedded modular structure, the problems that the construction quality is difficult to control, the construction period is long, the on-way resistance of air flow is large and the like in the existing reinforced concrete mid-partition wall are solved.
Owner:ZHONG ZI HUA KE TRAFFIC CONSTR TECH CO LTD

Panel placement slipform construction method

ActiveCN117803008Bself-respecting enoughWill not affect operationControl systemArchitectural engineering
A panel pouring slip form construction method, comprising the following steps: 1) bottom mold installation; 2) concrete pouring; 3) traction motor traction slip form panel; 4) the first pouring block is vibrated and troweled; 5) traction mold advances, forming a secondary pouring area; 6) repeating steps 2) to 5), completing the secondary pouring operation; 7) repeating steps 2) to 6), completing the slope protection slip form pouring construction. The application adopts the above method, which can solve the problems of poor stability of the slip form, influence of the concrete floating force on the construction and complicated control of the traction mechanism control system in the prior art, and realizes more convenient and stable panel pouring slip form construction.
Owner:CHINA GEZHOUBA (GRP) FIRST ENG CO LTD

A height-adjustable indoor building platform

This invention relates to the field of building construction technology and provides a height-adjustable indoor construction platform, including a main board. A lifting mechanism and a construction platform are arranged above the main board. Extended platforms are hinged to both sides of the construction platform. The beneficial effects of this invention are as follows: long pipes are fixed by the limiting mechanism, which can prevent the pipes from rolling or shifting during upward transportation without the need for worker assistance. In addition, the lifting mechanism realizes automated upward transportation of pipes, thereby reducing the labor intensity of workers and speeding up the construction progress. By using the cooperation of the flipping mechanism and the limiting mechanism, while fixing the pipes, the extended platform also forms a guardrail to protect workers, thereby improving safety. Furthermore, the extended platform is not limited to carrying pipes; it can also be used to place other materials or items as an extension platform of the construction platform, increasing the workers' working space.
Owner:CHINA CONSTR SECOND ENG BUREAU LTD

Building road and bridge pouring construction technology and device

The invention discloses a building road and bridge pouring construction process and device. The building road and bridge pouring construction device comprises a plurality of road and bridge pouring formwork bodies which are transversely spliced together. Each splicing structure is arranged between every two adjacent road and bridge pouring formwork bodies and comprises a splicing block fixed to the surface of one side of the corresponding road and bridge pouring formwork body, a splicing groove formed in the surface of the other side of the corresponding road and bridge pouring formwork body and corresponding to the splicing block, and an outer side type locking structure arranged between the splicing block and the splicing groove; each sealing structure is arranged between every two adjacent road and bridge pouring template main bodies; according to the building road and bridge pouring construction technology and device, through the innovative splicing structure and sealing design, it is avoided that penetrating type screw holes are formed in the splicing positions of the formworks, the problems that concrete leaks from the screw holes and slurry leaks in the pouring process are fundamentally solved, the defects of honeycombs, pitted surfaces and the like on the surface of the concrete are effectively prevented, and the construction quality is improved. The appearance quality of the road and bridge structure is remarkably improved, the road and bridge structure is smoother and more attractive, and the sealing performance of the formwork is enhanced.
Owner:陈涛

A high-efficiency material lifting device for construction

This utility model relates to the field of building construction technology and discloses a high-efficiency material lifting device for building construction. It includes a support frame, a motor mounted at the bottom, a lifting base and a material cart in the middle, and limit plates on both sides of the top. Two sets of first and second gears, connected by rotating rods, are rotatably mounted on the bottom and back sides of the support frame, respectively. These gears mesh with a chain, and the motor drives the first gear to rotate, which in turn drives the chain to lift the base. Slide rods are mounted on both sides of the support frame. Multiple sets of pulleys are rotatably mounted on both sides of the mounting plate of the lifting base and slidably connected to the slide rods, serving as guides and limiters. The lifting base includes a mounting plate, connecting blocks, pulleys, etc. A slot seat is rotatably mounted between the mounting plates. The material cart slides into the slot seat via a slider. A locking device is located at the top of the slot seat. By moving a lever, a connecting rod is moved, causing a pin to slide within a limit sleeve, engaging with the opening of the material cart's insertion rod to fix the material cart, ensuring safe and stable material lifting.
Owner:内蒙古东恒工程有限公司

Translation adjusting device for indoor assembly line installation

The utility model belongs to the technical field of indoor installation, and particularly relates to a translation adjusting device for indoor assembly line installation, which comprises a central frame assembly and two telescopic frame assemblies symmetrically arranged in the central frame assembly. And the center frame assembly comprises a center frame, a movable net frame, a clamping sliding plate and a clamping sliding frame, the movable net frame is connected to the center frame in a clamped mode and connected to the multiple supporting plates in a lap joint mode, movable supporting legs are installed on the two sides of the middle of the bottom face of the center frame, and movable wheels are installed at the lower ends of the movable supporting legs. By adopting a cooperative matching structure of the central frame assembly and the telescopic frame assembly, synchronous telescopic movement adjustment on the two sides can be realized. According to the device, rapid switching of the moving state and the positioning state is achieved through mechanical linkage, position adjustment can be completed within three minutes, the stable state is achieved, and the construction progress and the construction safety are comprehensively improved.
Owner:HENAN HEAN INSTALLATION ENG CO LTD

Metal composite walkway plate

ActiveCN224494870UEnhance "durability"Increased durability
The utility model discloses a kind of metal composite material walkway plates, comprising: footpath cantilever support, footpath cantilever support is spacedly arranged multiple along the length direction of prefabricated beam, the fixed end of multiple footpath cantilever support is fixedly connected with prefabricated beam;Steel grating frame, steel grating frame is multiple, the length direction of each steel grating frame Two ends are respectively overlapped and fixed on adjacent two footpath cantilever supports;Continuous no-alkali glass fiber felt reinforced polyurethane rigid foam plate, polyurethane rigid foam plate is multiple, and it is flatly fixed on multiple steel grating frames;Guardrail, guardrail is fixed on the cantilever end of footpath cantilever support.The footpath step plate is combined use by steel grating frame and polyurethane rigid foam plate, can greatly improve the durability of footpath step plate, and has the advantages of light weight, high strength.
Owner:HENAN WEIBO CONSTRUCTION ENGINEERING CO LTD +1

Concrete polisher with protection function

PendingCN122077468Aachieve damageprotection from damageGrinding drivesPlane surface grinding machinesBrakeSpinning
This invention relates to the field of polishing machines, specifically disclosing a concrete polishing machine with protective functions. It includes a base with a hand handle, a mounting plate on the base, a polishing assembly on the base, a drive assembly connected to the polishing assembly on the base, a push assembly on the base, a brake assembly between the push assembly and the polishing assembly, and an inflation assembly on the mounting plate. This invention provides primary buffering, secondary buffering, braking, and support functions. When the hand is released, it effectively counteracts the polishing machine's continuous spinning and irregular movements, providing effective protection against abnormal movements from multiple angles. This ensures the polishing machine quickly stops working after an malfunction, reducing collision damage and preventing malfunctions, minimizing threats to surrounding workers, improving work efficiency, and accelerating construction progress.
Owner:BOXING COUNTY DACHENG CONCRETE CO LTD

Construction method of variable diameter drilling and reaming pile driver

This invention belongs to the field of engineering machinery technology and relates to a construction method for a variable-diameter drilling and reaming integrated pile driver. It solves the problem that existing drilling and reaming integrated pile drivers cannot change diameter. The construction method is based on a variable-diameter drilling and reaming integrated pile driver, which includes an active pipe, a driven pipe, an upper wing plate seat, a lower wing plate seat, and a reaming arm. The reaming arm is formed by connecting an upper wing plate and a lower wing plate. The upper wing plate is formed by connecting an upper wing plate and an upper wing plate link, and the lower wing plate is formed by connecting a lower wing plate and a lower wing plate link. The construction method determines the length of the reaming arm to be connected by adjusting the position of the upper wing plate seat on the gear key and the position of the lower wing plate seat on the driven pipe. Then, it adaptively adjusts the number of wing plate link connections. Through the coordinated cooperation between the components, it achieves reaming operations for different pile diameters, angles, and sizes, which is simple, convenient, and greatly improves construction efficiency.
Owner:齐迎春

Overhanging formwork and climbing frame conversion steel platform at change position of main structure of super high-rise building

The utility model belongs to the technical field of building construction, and discloses an overhanging formwork and climbing frame conversion steel platform at a change position of a main structure of a super high-rise building, which comprises an Nth floor slab and an (N-1) th floor slab, and further comprises a stress structure which is arranged between the Nth floor slab and the (N-1) th floor slab in an overhanging manner and is used for overhanging support, the anchoring structures are arranged on the Nth layer of floor and the (N-1) th layer of floor and used for pre-embedded stress and compression fixation, and the stress structure is fixed between the Nth layer of floor and the (N-1) th layer of floor through the anchoring structures; the stress structure comprises a plurality of triangular supports which are evenly distributed, and a plurality of pieces of I-shaped steel are evenly distributed among the triangular supports. According to the overhanging formwork and climbing frame conversion steel platform for the change position of the main structure of the super high-rise building, the advantages of the H-shaped steel, the inclined strut steel pipes and the I-shaped steel are organically combined, the H-shaped steel and the inclined strut steel pipes are high in combination stability and strength and have the functions of a structure overhanging formwork platform and a climbing frame conversion operation platform, and the I-shaped steel is flexible in arrangement and convenient to assemble and disassemble.
Owner:ZHEJIANG ZHONGCHENG CONSTR GRP

Pile and column integrated enclosing wall structure

The utility model discloses a pile and column integrated enclosing wall structure which comprises a plurality of high piles, the high piles are arranged at intervals in the length direction of a construction path of an enclosing wall, the lower portions of the high piles are buried in a foundation, and the upper portions of the high piles extend to the position above the ground; the short piles are buried in the foundation, the short piles are arranged in the length direction of the construction path, and at least one short pile is arranged between every two adjacent high piles; the underground coupling beams are poured on the ground, the underground coupling beams are connected between the two adjacent high piles, and the top ends of the short piles are connected to the underground coupling beams in a supporting mode; and the guardrails are mounted on the ground coupling beams and are connected between the upper parts of the two adjacent high piles. The utility model solves the problem that when the enclosing wall is adjacent to the road, the adjacent road may be occupied and even damaged by the traditional method of excavating the groove to construct the enclosing wall.
Owner:CHINA CONSTR EIGHTH ENG BUREAU TECH CONSTR CO LTD

Quick-fit hanger line fixing device and method of use thereof in the demolition of building structures

The application relates to the technical field of building construction, in particular to a quick-mounting type hanging rope fixing device and a use method thereof in building structure demolition, which comprises a hanging rope, a fixing seat, a rotating part, a moving part, an extension part and a blocking column, the lower end of the hanging rope is horizontally provided with a horizontal hole for placing the blocking column, the upper end of the fixing seat is fixedly connected with the bottom of the hanging rope, the rotating part comprises a rotating plate and a first motor, a first rotating shaft is fixedly connected with the output shaft of the first motor, the rotating plate is arranged on the fixing seat, the rotating plate is key-connected with the first rotating shaft, the moving part comprises a bottom plate and a moving plate which are horizontally arranged, the moving plate is slidingly connected with the bottom plate, a second motor for driving the moving plate to slide is fixedly connected with the bottom plate, the extension part comprises an electric telescopic rod which is vertically arranged, the upper end of the electric telescopic rod is fixedly connected with the moving plate, the lower end of the electric telescopic rod is fixedly connected with a baffle, and the blocking column is vertically arranged and connected with the baffle. The scheme can automatically and quickly fix the hanging rope with the floor, improves the demolition progress and avoids accidents.
Owner:SHANGHAI CONSTRUCTION FOURTH CONSTRUCTION GROUP CO LTD

A method for arranging the bottom grid of a main transformer oil sump

ActiveCN116049956BSimple and intuitive layoutFast and efficient typesettingGeometric CADSpecial data processing applications
This invention belongs to the technical field of design and construction of main transformer oil sump grids in power engineering. Specifically, it relates to a method for laying out the bottom layer grids of a main transformer oil sump, including the following steps: defining the characteristics of the grid support pillars, dividing the oil sump layout area, arranging key pillars, adjusting the pillars, assigning "forward and reverse" properties to the pillars, and laying out the grids according to the pillar characteristics. The layout method provided by this invention is simple and intuitive, effectively solving the problem of difficult layout of the bottom layer grids of the main transformer, and avoiding repetitive work such as on-site processing caused by improper layout of the main transformer grids.
Owner:QINGHAI ELECTRIC POWER DESIGN INST

Multifunctional cleaning scraper knife

The utility model relates to a multifunctional cleaning scraper knife which comprises a scraper knife body, the scraper knife body is provided with a front end, a rear end and a middle part, the front end is provided with at least one cutting edge, and the cutting edge is fixedly connected to the front end; an open spanner is arranged on the middle part; the handle part is provided with a handle front end and a handle rear end, and the handle front end and the rear end of the perching knife body are fixedly connected together, so that the handle part and the perching knife body are fixedly connected together; a preset number of screwdriver placement holes and a preset number of screwdriver bit placement holes are formed in the rear end of the handle, and the screwdriver placement holes and the screwdriver bit placement holes extend by a preset length from the end face of the rear end of the handle to the front end of the handle. The multifunctional cleaning scraper knife is convenient to carry, multipurpose and convenient to operate, time cost is greatly saved, and the construction progress is accelerated to a certain degree.
Owner:红蚂蚁装饰股份有限公司

An exterior wall structure and its construction method

This invention relates to the field of building construction technology, specifically to an exterior wall structure and its construction method. The exterior wall structure includes: fasteners, penetrating the lower floor slab, with at least two fasteners; a first wall section disposed between two adjacent fasteners; a ring beam, fixedly connected to one end of the fasteners away from the lower floor steel beam, and sequentially connecting multiple fasteners; and a second wall section having a wall panel section and a door / window section, with both ends of the second wall section fixedly connected to the ring beam and the upper floor steel beam, respectively, along the height direction of the exterior wall. The exterior wall structure provided by this invention, by fixing multiple fasteners to the lower floor steel beam and setting a first wall section between two adjacent fasteners to form a lower wall, and by setting a ring beam on the fasteners and fixing the wall panel section and door / window section to the upper floor steel beam through the ring beam, is suitable for forming an upper wall, thereby simplifying the connection between doors / windows and the wall and improving the overall construction speed of the exterior wall.
Owner:CHINA CONSTR SCI & IND CORP LTD

Offshore booster station sectional closure docking device and method

This invention relates to the field of marine engineering equipment technology, specifically disclosing a segmented docking device and method for an offshore booster station, comprising: an upper section and a lower section. The lower section has an adjustment mechanism at its top, which includes a vertical adjustment structure and a horizontal adjustment structure. The vertical adjustment structure includes a mounting plate, a hydraulic jack, and a feedback plate. The mounting plate is connected to the top of the lower section by positioning bolts, and the hydraulic jack is connected to the top of the mounting plate by positioning bolts. The feedback plate is located above the hydraulic jack and on one side of the upper section. The horizontal adjustment structure includes a vertical plate, a drive motor, and a second feedback plate. The vertical plate is located on top of the mounting plate, and the drive motor is located on the side of the vertical plate opposite to the hydraulic jack. This device can improve the segmented docking accuracy, accelerate the construction progress, effectively control welding deformation, and ensure construction safety.
Owner:NANTONG BLUE ISLAND OFFSHORE CO LTD +3

Automatic adjusting support for asynchronous and eccentric construction of segmental beam and using method

The invention belongs to the technical field of bridge construction equipment, and particularly provides an automatic adjusting support for asynchronous eccentric construction of a segmental girder and a using method.The TY composite pier comprises a Y-shaped cover beam and a T-shaped pier body, the Y-shaped cover beam is connected to the T-shaped pier body, and the segmental girder is installed on the left portion of the upper face of the Y-shaped cover beam; an automatic adjusting bracket is connected between the Y-shaped bent cap and the T-shaped pier body at the position of the segmental beam; the problems that in the asynchronous eccentric construction process of an existing segmental beam, a traditional support is difficult to adjust accurately to adapt to stress requirements of different segments, linear control of a pier in the construction process is difficult, deviation is prone to occurring, and the overall quality and appearance of a bridge are affected are solved. The pressure borne by the pier body of the pier is kept balanced, eccentricity is avoided, and the construction line shape and quality of the segmental beam are effectively guaranteed.
Owner:CHINA COMM SECOND PUBLIC OFFICE EAST CHINA CONSTR CO LTD +1

An assembled channel manufactured by using a decommissioned wind power blade and a manufacturing method thereof

PendingCN122504148ASolving the high-carbon emissions dilemmaRealize high-value utilization of solid wasteGeomembraneHigh density
This invention relates to the field of farmland irrigation engineering technology, and discloses a prefabricated channel made from retired wind turbine blades and its construction method. The prefabricated channel consists of a rectangular channel body composed of a base plate unit and side plate units, innovatively employing a double connection structure. A rectangular mortise at the top of the side of the base plate unit connects to a rectangular tenon at the bottom of the side plate unit via sliding assembly, forming a non-detachable connection. The base plate unit has L-shaped stepped grooves and inverted L-shaped stepped grooves at both ends, while the side plate units have square socket plugs and square socket slots at both ends, enabling the splicing of adjacent channel bodies. A high-density polyethylene geomembrane impermeable layer and an impermeable lining concrete layer are sequentially laid on the inner surface of the channel body to form a composite impermeable structure. This invention effectively solves the problem of resource utilization of solid waste from retired wind turbine blades, transforming it into a channel component with practical value. This not only reduces channel construction costs and significantly improves construction efficiency (achieving rapid assembly and eliminating the need for on-site pouring), but also ensures the integrity and stability of the channel structure, resulting in significant environmental and economic benefits.
Owner:CHANGCHUN INST OF TECH +1

Integral hoisting construction method for pre-buried anchor bolts of column equipment

ActiveCN118148378BReduce precision errorImprove positioning matchingArchitectural engineeringRebar
The application discloses a kind of tower equipment pre-buried anchor bolt integral hoisting construction methods, first, the positioning axis consistent with the axis of positioning mould is ejected along the center of equipment foundation;After installing vertical support, positioning mould is hoisted as a whole, and each anchor bolt is sequentially assembled into the mounting hole of positioning mould, so that positioning mould and anchor bolt are connected into a whole in the air;The positioning mould and anchor bolt that have been assembled are hoisted into the equipment foundation insert bar, after anchor bolt anchor plate falls below horizontal support elevation, horizontal support construction is carried out, then positioning mould and anchor bolt are dropped to positioning mould support frame, anchor bolt is calibrated and reinforced, then steel binding, formwork installation and concrete pouring are carried out, equipment foundation construction is completed, and formwork is removed and positioning mould is removed.The application adopts positioning mould and anchor bolt integral assembly in the air, reduces the precision error generated by secondary assembly on site, and improves the pre-buried anchor bolt integral hoisting efficiency.
Owner:CHINA CHEM ENG SECOND CONSTR

A soft rock tunnel grouting reinforcement design method, a reinforcement system and a construction method thereof

ActiveCN116011060Blow costSpeed up the construction periodArchitectural engineeringRock tunnel
The present application relates to the field of civil engineering, in particular to a soft rock tunnel grouting reinforcement design method, a reinforcement system and a construction method thereof, wherein the anchor rod parameters are determined by determining the anchor rod reinforcement parameters in the local deformation abnormal area, calculating the anchor rod length L, calculating the anchor rod correction length L2' based on the deformation rate, and calculating the number of long anchor rods in the deformation section, the anchor rod parameters are determined, the initial support is applied after excavation, and the grouting pipe is set, then a plurality of monitoring points are set inside the initial support, grouting is carried out at the back cavity of the initial support, and the grouting effect is checked, finally, the anchor rod reinforcement is carried out in the local deformation abnormal area of the initial support, thereby solving the problems of large workload, long time consumption, construction period and cost control in the conventional grouting reinforcement treatment of large cavities and non-dense areas in the soft rock tunnel in the fracture clamping zone, and the anchor rod reinforcement solves the problem of poor treatment effect of the existing technical scheme on the initial support deformation abnormal area.
Owner:CHINA RAILWAY 23RD BUREAU GRP NO 1 ENG

A free-supporting modular slice prefabricated utility tunnel structure

ActiveCN224412616UReduce on-site wet workReduce wet workMortise and tenonArchitectural engineering
The utility model provides a kind of exempt from formwork piece prefabricated comprehensive pipe gallery structure, including along longitudinal piece prefabricated side wall, middle wall, roof and bottom plate;The side wall top is equipped with cantilevered plate integrally formed with one, and the cantilevered plate is used to rest roof and as the template of wet connecting node;The side wall and roof, the side wall and bottom plate are connected by steel bar lap joint and post-poured concrete to form wet connecting structure;The middle wall and roof are connected by high-strength bolt to form dry connecting structure;The middle wall and bottom plate are connected by mortise and tenon structure to form dry connecting structure;The longitudinal end of the side wall, roof and bottom plate is equipped with the connecting box of built-in steel wire rope ring, and the corresponding steel wire rope ring of adjacent pipe gallery section is connected by pin shaft steel bar and forms longitudinal connecting structure by pouring concrete.The utility model has good economy, and multiple segments can also be parallel advanced during construction, and efficiency is stable.
Owner:CHINA ENERGY CONSTR PREFABRICATED CONSTR IND DEV CO LTD

Supporting and fixing device between steel structure columns

The utility model discloses a supporting and fixing device between steel structure columns, which belongs to the technical field of steel structure installation of housing construction projects and comprises a channel steel mechanism, a fixing mechanism and a fastening mechanism. The channel steel mechanism comprises an inter-column support fixing upper channel steel and an inter-column support fixing lower channel steel, the inter-column support fixing upper channel steel and the inter-column support fixing lower channel steel are connected through a fixing mechanism, and a fastening mechanism is installed in the inter-column support fixing lower channel steel in the channel steel mechanism. And through operation of the fastening mechanism, reinforcing and fixing of the inter-column supporting structure accessory are achieved.
Owner:CHINA MCC17 GRP CO LTD

Primary-secondary climbing frame

The utility model discloses a primary-secondary climbing frame, which relates to the technical field of constructional engineering, and comprises a primary climbing frame, a secondary climbing frame and a platform turning plate, the primary climbing frame is arranged on the outer contour of a building, the secondary climbing frame is arranged on the inner contour of the building, and the structures of all layers of the primary climbing frame and the secondary climbing frame are arranged in parallel and level; platform turning plates are movably connected to the walkway plates of all layers of the auxiliary climbing frame, and the other ends of the platform turning plates are in lap joint with the walkway plates of the main climbing frame. The child-mother climbing frame is divided into the mother climbing frame and the child climbing frame, the platform turning plate is installed on the child climbing frame and used for being connected with the mother climbing frame, the platform turning plate is opened during detachable connection and lifting to avoid a horizontally-arranged and overhead horizontal connecting beam, the turning plate is covered after lifting is completed, the child-mother climbing frame can adapt to obstacles of various non-standard layer components, the non-standard components are flexibly avoided, and smooth lifting is achieved; the construction progress is not influenced.
Owner:GUANGXI METALLURGICAL CONSTR +1

Weak surrounding rock shallow-buried tunnel portal section excavation method

PendingCN122707562Aavoid construction risksReduce excavation
The present application relates to the technical field of tunnel engineering, in particular to a kind of soft weak surrounding rock shallow-buried unsymmetrical pressure tunnel portal section excavation method, comprising the following steps: S10, slope excavation tunnel excavation contour line above the natural slope of arch top and support;S20, vertical steel pipe pile is built outside tunnel excavation contour line on the side of mountain;S30, set range in tunnel arch portion is built reinforced concrete arch cap;S40, the slope toe of the reinforced concrete arch cap on the side of mountain that has been excavated and supported is backfilled;S50, build tunnel outside retaining wall;S60, the upper part of the reinforced concrete arch cap is backfilled and counter-pressured;S70, tunnel subsurface excavation and support are carried out.The present application can reduce the disturbance of lower construction to slope, avoid the construction risk of dangerous deep foundation pit engineering, improve construction reliability, speed up construction progress and protect ecological environment.
Owner:CHINA HYDROELECTRIC ENGINEERING CONSULTING GROUP CHENGDU RESEARCH HYDROELECTRIC INVESTIGATION DESIGN AND INSTITUTE

A cup mouth foundation steel structure box column rapid positioning device

ActiveCN224325809UPrevent the problem of large deviations in elevation and sizeImprove construction progressFoundation engineeringArchitectural engineeringImplant
The utility model relates to steel structure installation technical field provides a cup mouth foundation steel structure box type column fast device, including cup mouth foundation and steel box type column, the steel box type column sets up at cup mouth foundation top, all fixedly connected with the positioning board around the steel box type column, the cup mouth foundation top four corners place implants eight chemical anchor bolt, the positioning board all set up positioning hole corresponding chemical anchor bolt department, and chemical anchor bolt all sets up in the positioning hole inside, the chemical anchor bolt department sets up the matched leveling nut and gasket, the lower end between both sides of steel box type column and cup mouth foundation all sets up the limiting block. The utility model discloses, device can be through leveling nut can adjust the elevation size, can prevent the problem that elevation size deviation is bigger, can effectively improve construction progress and installation quality.
Owner:HENAN D R CONSTR GRP STEEL STRUCTURE CO LTD +1

A tunnel inverted arch end filling support assembly

The utility model discloses a tunnel inverted arch end filling support subassembly, include: first baffle, first baffle bottom extension connection has with corresponding side inverted arch adaptation's first bottom plate, and the first bottom plate is passed through and is set up with a plurality of first bottom plate fixed holes, second baffle, second baffle bottom extension connection has with corresponding side inverted arch adaptation's second bottom plate, and the second bottom plate is passed through and is set up with a plurality of second bottom plate fixed holes, a plurality of adjustable support spare, a plurality of adjustable support spare are respectively rotationally connected on first baffle and second baffle, fixed part, fixed part respectively through first bottom plate fixed hole and second bottom plate fixed hole fixed on the ground, wherein, first baffle and second baffle splicing complete the plugging of tunnel inverted arch filling end. The utility model is safe and reliable, easy operation can complete the support and filling work of inverted arch end head fast, realizes the acceleration whole construction progress, saves time and cost, improves construction efficiency.
Owner:YUNNAN CONSTR INVESTMENT HLDG GRP CO LTD +1

A quick-connection structure for prefabricated buildings

This utility model discloses a quick-connect structure for prefabricated buildings. The quick-connect structure includes prefabricated wall panels and a connecting mechanism. The connecting mechanism includes an assembly frame and limiting blocks. The assembly frame has two slots, each containing two adjacent prefabricated wall panels. The limiting blocks pass through both sides of the two slots and are inserted into the two prefabricated wall panels. The limiting blocks on the same side of the two slots are connected as a whole. This utility model's quick-connect structure for prefabricated buildings simplifies the connection process for adjacent prefabricated wall panels by connecting the limiting blocks on the same side of the two slots into a whole. This allows for the insertion of all limiting blocks on the same side of the two slots with only one insertion operation, simplifying the connection steps for adjacent prefabricated wall panels, accelerating construction progress, and avoiding the cumbersome connection steps and delays caused by multiple limiting block insertion operations.
Owner:CHINA MCC 2 GRP CO LTD