34results about How to "Easy construction control" patented technology

The present invention discloses a small-bore long distance curved pipe jacking method, belonging to the technical field of architectural construction, and comprising the following steps: constructing a working well; mounting construction equipment; leading in a measuring axis and a benchmark; taking the jacking tubes in position; jacking; grouting; constructing pipelines in the working well; and finishing the cleaning; the construction equipment comprises a development machine, a curved guide machine with an automatic measurement system, a jack and a pump cylinder, wherein the curved guide machine is connected to a back end of the development machine; the jack is mounted in the working well; the pump cylinder is mounted in a duct of the curved guide machine; the pump cylinder is used for conveying thixotropic mud to between an outer wall of the jacking tube and a soil body via a slip casting tube; during the jacking procedure, the adjacent jacking tubes are connected by a pipe joint sleeve. The method of the present invention enables the prior impossible small-bore long distance quick turn construction to be possible; the economic benefit is good, and construction precision is high; the environment problems like traffic obstruction and the like are solved successfully.

The invention relates to the technical field of concrete admixtures and in particular relates to an unsaturated polyether monomer, a preparation method and application of the unsaturated polyether monomer, and a polymer prepared thereby. According to the structural design of introducing glycidyl ether into hydrophobic blocks, a certain amount of hydrophobic units and hydrophobic groups are introduced and controlled in a carboxylic copolymer molecular structure, so that the viscidity of a cement-based material is reduced under the action of a water reducing agent, and the dispersion property of the water reducing agent and slump retaining performance are improved. The unsaturated polyether monomer disclosed by the invention comprises multiple polymerization units, and has high double bond retention rate and excellent polymerization activity; by controlling the reaction conditions, the main chain and side chains of the product can be subjected to accurate design at different positions and lengths, so that the prepared water reducing agent is rich in product structure and is slightly influenced by factors such as high-temperature environment change, material quality fluctuation and the like, the concrete workability and high slump retaining performance are maintained, and convenience is brought to production and transportation and construction control.

The invention relates to a method for constructing a novel mini-pile, which comprises the following steps: step one, using a drilling machine to form drill holes of which the diameter is between 0.25 and 0.4 meter on a groundwork; step two, pouring clear water in the drill holes through a hollow drill pipe of the drilling machine to perform a primary hole cleaning; step three, lifting out the drill pipe and putting reinforcing cages and pouring guide tubes into the drill holes; step four, pouring clear water into the drill holes through the pouring guide tubes to perform a secondary hole cleaning; and step five, pouring prepared fine gravel concrete into the drill holes through the pouring guide tubes until the fine gravel concrete pours out of the drilling holes so as to form the mini-pile of which the diameter is between 0.25 and 0.4 meter. The method adopts a mode of directly pouring the fine gravel concrete to form the mini-pile, thereby saving pile-making materials, facilitating engineering budget and final account and benefiting the popularization and the application of the mini-pile; besides, the method is convenient to control the pile body strength of the mini-pile so as to be advantageous for improving the pile body strength and the bearing capacity of the mini-pile.

The invention discloses a construction method of an upper structure of a steel-concrete overlapping beam. The method includes the following steps of erection of flexible temporary buttresses, mounting of supporting seats, mounting of pre-embedded parts, hoisting of steel beams, fine adjustment of the beams, beam section welding, first-time removing of supports, pouring of bridge deck slab sections, prestress tension, second-time beam lowering and removing of the flexible temporary buttresses. According to the construction method of the upper structure of the steel-concrete overlapping beam, the construction process of erection of the steel beams and a large-tonnage steel beam fine adjustment device by means of a flexible buttress method has the advantages of convenient operation, fast construction and the like, devices that are used in the construction method are common devices that are made of common materials and can be applied to common bridge construction sites, costs are low, and the application range is wide.

The invention discloses a flocculating agent for cement high pressure jet grouting and preparation method and application thereof. The flocculating agent is composed of konjac glucomannan, carbonate, rheological agent, dispersing agent, early strength agent and water by uniform stirring, distillation and smashing, and the weight ratio of the konjac glucomannan, carbonate, rheological agent, dispersing agent and early strength agent is 35-45: 22-28: 8-12: 13-17: 8-12; the preparation thereof includes the steps: raw material weighing and fully dissolution, mixed slurry confecting and distillation, spray drying, smashing and sieving; and the application thereof includes the steps: admixture determination, flocculating agent cement slurry confecting and slurry grouting completing by utilizing high pressure jet grouting process. The invention has simple preparation step, low cost and simple and convenient use and has no harm on human body, application in high pressure jet grouting construction is simple and convenient and processing effect is good, and the problems that pure cement slurry has poor adhesion, high cement slurry drain, high construction cost and influence on construction progress existed in high pressure jet impermeable grouting can be solved.

The invention discloses a method for preparing baking-free ecological bricks from chemical and residual sludge as well as a prepared product. Residual sludge incineration ash and metakaolin are mixed according to a certain proportion with uniformly stirring, a mixture is obtained, sodium hydroxide, sodium silicate and water are added, a mixer is used for stirring and fully mixing, and slurry is obtained; the mixed slurry is extruded and injected into a cuboid test piece of a certain specification, and the test piece is sent to a drying oven for maintenance; the test piece is taken out for demoulding, maintenance is continuously carried out for 7 days at 20-80 DEG C, and residual sludge based baking-free ecological bricks are prepared. The ecological bricks are light and porous with large strength, and construction control is convenient. The bricks are hopeful to be used for river channels in chemical industry park, ecologic slope protection of landscape rivers and ecological paving bricks in park, and the like.

The invention relates to an automatic spraying pipeline system, which can reduce the installation difficulty of the pipeline and independently carry out construction with an easy control over the construction, thus guaranteeing the construction period of the system and the installation quality of the pipeline system. The invention also provides an installation method of the automatic spraying pipeline system. The automatic spraying pipeline system comprises a main pipeline, a stem pipeline, a fire-fighting hose, fittings fixed on a keel and a shower nozzle, and is characterized in that: the main pipeline and the stem pipeline are arranged inside a roof truss layer above a static pressure box; one end of the fire-fighting hose is connected with the stem pipeline and the other end is communicated with a branch pipeline through bends and short tubes; the short tubes pass through the roof of the static pressure box; the other end of the branch pipeline is connected and communicated with the shower nozzle fixed on the keel. When in installation, the main pipeline and the stem pipeline inside the roof truss layer above the static pressure box are installed at a certain place; the fire-fighting hose is installed with one end being connected with the stem pipeline; the stem pipeline is installed at the place and is communicated with the other end of the fire-fighting hose through the short tubes and the bends; connectors fixed on the keel are installed and a FFU keel is connected with the branch pipeline through the connectors of the keel; the air pressure and the water pressure of regional pipelines are tested; the shower nozzle is installed.

The invention discloses a karst water guiding device and method. The karst water guiding device comprises a water collection mechanism, a water guiding mechanism and a water drainage mechanism. The water collection mechanism is arranged on one side of an underground building. One end of the water guiding mechanism is communicated with the water collection mechanism, and the other end of water guiding mechanism is communicated with the water drainage mechanism. The water guiding mechanism is arranged underneath the underground building. The water drainage mechanism is arranged at the downstream of a karst water channel. The karst water guiding device and method have the advantages that the karst water guiding device is simple in design, convenient to construct and control, capable of taking full advantage of terrain and karst water natural channels and easy to apply and popularize within a large area; the karst water guiding device and method can effectively solve the karst geology problem of the underground building during excavation and lower the impact and corrosion effects on the side walls of the underground building by karst water during operation; besides, connection between the upstream and the downstream of the karst water is guaranteed, and economic benefits and social benefits are obvious.

The invention discloses a method for installing a steel box arch rib buckle by the hanging method. The method is characterized in that: the construction method is divided into three stages, namely a lifting stage, a positioning stage, a buckle conversion stage and a secondary stretching stage; the steel box arch rib buckle mounting method comprises the following steps: The method has clear division of each stage, clear stress of each stage of the buckling and hanging system structure, and convenient construction control of various operations, which lays a foundation for ensuring the ideal goalof the bridge state. At the same time, the quick locking device used in the construction method can be used for temporary consolidation, the operation is simple and convenient, the connection is fast, the connection strength is guaranteed, the connection can be recycled after simple treatment, and has certain installation deviation adaptability. Therefore, it can be said that the construction method designed by the invention has a relatively prominent embodiment in technology, quality, safety and economy, and is particularly suitable for popularizing and applying in the field, and has a verybroad market prospect.

The invention relates to a stamping device civil engineering installation level control device and belongs to the technical field of machine tool equipment. The stamping device civil engineering installation level control device comprises a support embedded plate provided with a grouting hole and a plug welding hole, a leveling anchor bar and a fixing anchor bar, wherein the leveling anchor bar and the fixing anchor bar are welded in the plug welding hole. The invention further discloses an installing method. The installing method comprises the steps of pre-embedding the leveling anchor bar and the fixing anchor bar in concrete and adjusting the leveling anchor bar to be horizontal; aligning the plug welding hole in the support embedded plate to the leveling anchor bar and the fixing anchor bar, placing the support embedded plate, reserving a concrete to-be-cast space under the support embedded plate and adjusting the leveling anchor bar to be horizontal with the support embedded plate; performing plug welding to the support embedded plate, the leveling anchor bar and the fixing anchor bar and cutting off and grinding the portions of the upper end faces of the leveling anchor bar and the fixing anchor bar exposing out of the support embedded plate to be smooth; pouring concrete into the grouting hole in the support embedded plate and filling up the concrete to-be-cast space reserved under the support embedded plate. The design method is clear and definite, the construction control is simple and convenient, and construction faults can be effectively reduced.

The invention provides a slope hydraulic self-propelled concealed-rail drag mold, which comprises travel beams, a balance beam, a template system, a working platform, a hydraulic system and the like, wherein each travel beam consists of a crossbeam, a front sliding seat, a back sliding seat, adjusting screws and a cylinder block; the front sliding seat is in rigid connection with the crossbeam, and the back sliding seat is hinged with the crossbeam; the template system consists of a template, a bearing beam and a template system support frame; the bearing beam is parallel to the balance beam; two ends below the bearing beam and the balance beam are respectively provided with a travel beam in the vertical direction; the rear end of the template is provided with the template system support frame; the working platform is parallel to a rail, and is obliquely tensioned on the template system support frame through a spiral lock button; the hydraulic system mainly comprises a hydraulic pump station, advancing cylinders, a hydraulic pipeline and the like; the hydraulic pump station is arranged in the middle of the bearing beam; and an advancing cylinder is arranged below each of two travel beams. The drag mold is not limited to the slope gradient, can ensure that concrete can be continuously poured in large cube amount and large area, and ensures high pouring speed and good quality.

A self-propelled mobile formwork for the construction of a double rectangular water conservancy aqueduct, including an outer beam system (1), an outer formwork system (2), an inner beam system (3), an outer formwork system (4), and an electric control system (5 ) and the hydraulic system (6); the outer beam system (1) is the main bearing system of this equipment, mainly composed of the outer beam (1a), the No. 1 leg of the outer beam (1b), and the No. 2 leg of the outer beam (1c), outer girder No. 3 leg (1d), outer girder No. 4 leg (1e), and outer girder rear travel (1f); the outer girder (1a) is in the form of a box-shaped composite girder, which is in the form of double girders. The beam center distance is 9.5 meters, and the two beams are formed as a whole by two sets of end connecting beams, 8 sets of intermediate connecting beams, and 16 sets of left and right symmetrical cantilever beams; the outer main beam is the main load-bearing structure of the slot machine, and the pouring state is passed The No. 3 and No. 4 outriggers transmit the load to the top of the pier before and after the pouring span respectively.

The invention relates to the field of concrete defect treatment of hydraulic structures, in particular to a transverse crack treatment method for a roller compacted concrete dam. The method comprisesthe following steps of crack surface blocking, crack grouting and drilling, crack grouting and the like. A crack is blocked by using a grouting material to prevent a condition that leakage of a dam body exceeds a design standard as a result of dam leakage as stored water in a reservoir enters a roller compacted concrete crack under the action of a water head in front of the dam after the dam stores water and to prevent probability of displacement of the dam body as water leakage of the interlayer crack reduces the interlayer friction resistance of the roller compacted concrete. According to ajoint grouting system remedy principle, a slurry diffusing area is controlled by arranging a slurry outlet box for calculation so as to arrange a grouting system, grouting loops are arranged from bottom to top, slurry is fed in the lower grouting loop, the upper grouting loop is used to return slurry and exhaust, and the joint grouting system between two grouting loops is formed successively tilla crack area is integrally poured from bottom to top, so that it is ensured that the slurry is diffused uniformly when pouring the crack surface and it is beneficial to exhaust.

The invention discloses a cable force calculation method and calculation device for an inhaul cable, and the method comprises the steps: collecting the time domain data of a target inhaul cable according to a preset time interval, and converting the time domain data into frequency domain data through employing a fast Fourier transform method, so as to construct a spectrogram; identifying all wavecrest data in the spectrogram by using a second derivative method; screening out first wave crest data exceeding a preset wave crest threshold value from all the wave crest data; determining second wave crest data in the first wave crest data according to a preset frequency interval; and calculating the cable force of the target inhaul cable based on the second wave crest data. According to the method, interference data can be automatically filtered from frequency domain data, the wave crest of the inhaul cable is recognized, the tension of the inhaul cable is accurately calculated, and then construction control and health monitoring of an inhaul cable structure are facilitated.

The invention relates to the technical field of building materials, in particular to self-compacting concrete prepared from modified ceramic polishing powder and a preparation method of the self-compacting concrete. The self-compacting concrete is prepared from the following raw materials: cement, modified ceramic polishing powder, fly ash, coarse aggregate, artificial sand, water and a polycarboxylic acid high-performance water reducing agent, the modified ceramic polishing powder is obtained by sequentially carrying out soaking treatment on ceramic polishing fine powder through a coupling agent solution and soaking treatment through a coupling agent solution added with cellulose ether and an organic silicon defoaming agent. The specific surface area of the ceramic polishing fine powder is 800-830 m < 2 > / kg. The self-compacting concrete is doped with the modified ceramic polishing powder, so that the compactness of the concrete can be effectively improved, the flowability and the water-retaining property of the self-compacting concrete can also be improved, more obviously, the later strength of the concrete is better improved, and the problem of shortage of mineral admixture resources can be effectively solved.

The invention relates to a jack symmetric precompaction construction method for hanging basket girders for bridge hanging basket suspension casting construction. The method comprises the following ten steps: 1, selecting a precompaction field; 2, assembling the hanging basket girders; 3, symmetrically putting the two hanging basket girders on four wood pads; 4, prefixing rear anchor points; 5, assembling a middle fulcrum point block; 6, mounting a hanging basket loading system; 7, measuring the relative position size of the two hanging basket girders before loading; 8, loading and measuring the relative position size of the two hanging basket girders; 9, unloading and measuring the relative position size of the two hanging basket girders; and 10, calculating and analyzing according to measurement data. The method has the advantages that the precompaction on bridge can be substituted, thus heavy workload for suspending sandbags can be avoided; the precompaction work efficiency is effectively quickened so as to save massive precompaction construction time; load can be applied by the jack, and precompaction data can be accurately controlled; and the precompaction process and observation process of the hanging basket are performed in the field with high safety and strong controllability.

The invention discloses a construction method for a high-rise housing novel building system under the general-control construction period. The construction method comprises the following steps that foundation construction is conducted; a foundation under layer is constructed till the foundation under layer reaches the plus-or-minus-zero height; an N-layer major structural layer is constructed;an (N-1)-layer template-dismounting layer is constructed; an (N-2)-layer roof-propping water-stopping layer is constructed; an (N-3)-layer inner wallboard mounting layer is constructed; an (N-4)-layer ceiling putty layer is constructed; an (N-5)-layer ceiling suspending layer is constructed; an (N-6)-layer kitchen and bath brick laying layer is constructed; an (N-7)-layer hall and room brick laying layer is constructed; an (N-8)-layer windowsill mounting layer is constructed; an (N-9)-layer wall surface putty layer layer is constructed; an (N-10)-layerindoor door mounting layer is constructed; an (N-11)-layer component mounting layer is constructed; an (N-12)-layer wood floor laying layer is constructed; and an (N-13)-layer clean-keeping land-clearing layer is constructed. According to the construction method for the high-rise housing novel building system under the general-control construction period, compared with a traditional construction method, the construction period can be shortened while the construction quality is guaranteed, the construction method is more suitable for the building construction practice under a current novel building system, all-stage working periods in the whole building process of a high-rise housing are reflected in time, and the construction method has perspectiveness within the industry and is high in practicability.

The invention discloses a method for installing a steel box arch rib buckle by the hanging method. The method is characterized in that: the construction method is divided into three stages, namely a lifting stage, a positioning stage, a buckle conversion stage and a secondary stretching stage; the steel box arch rib buckle mounting method comprises the following steps: The method has clear division of each stage, clear stress of each stage of the buckling and hanging system structure, and convenient construction control of various operations, which lays a foundation for ensuring the ideal goalof the bridge state. At the same time, the quick locking device used in the construction method can be used for temporary consolidation, the operation is simple and convenient, the connection is fast, the connection strength is guaranteed, the connection can be recycled after simple treatment, and has certain installation deviation adaptability. Therefore, it can be said that the construction method designed by the invention has a relatively prominent embodiment in technology, quality, safety and economy, and is particularly suitable for popularizing and applying in the field, and has a verybroad market prospect.

The invention discloses a flocculating agent for cement high pressure jet grouting and preparation method and application thereof. The flocculating agent is composed of konjac glucomannan, carbonate, rheological agent, dispersing agent, early strength agent and water by uniform stirring, distillation and smashing, and the weight ratio of the konjac glucomannan, carbonate, rheological agent, dispersing agent and early strength agent is 35-45: 22-28: 8-12: 13-17: 8-12; the preparation thereof includes the steps: raw material weighing and fully dissolution, mixed slurry confecting and distillation, spray drying, smashing and sieving; and the application thereof includes the steps: admixture determination, flocculating agent cement slurry confecting and slurry grouting completing by utilizinghigh pressure jet grouting process. The invention has simple preparation step, low cost and simple and convenient use and has no harm on human body, application in high pressure jet grouting construction is simple and convenient and processing effect is good, and the problems that pure cement slurry has poor adhesion, high cement slurry drain, high construction cost and influence on construction progress existed in high pressure jet impermeable grouting can be solved.

The invention relates to the technical field of asphalt modifiers, and discloses an asphalt-modified CMAR composite modifier which is prepared from 40-70 parts of waste rubber powder, 10-40 parts of chlorinated polyethylene, 2-12 parts of nano carbon black and 8-20 parts of polyolefin wax. The invention also provides a preparation method of the asphalt modified CMAR composite modifier, which comprises the following steps: S1, grinding the raw materials: grinding the waste rubber powder again, and filtering after grinding; s2, mixing the raw materials: putting the raw materials into an internal mixer for open milling; and S3, extruding and granulating. According to the present invention, the compatibility is reasonable, the ingredients are common raw materials, the cost is low, the main component of the composite modifier is the waste tire rubber powder, the modified asphalt prepared by using the composite modifier has the same environmental protection economy as the rubber modified asphalt, the compatibility in the asphalt system is improved, and the blending temperature is reduced.

The invention relates to an automatic spraying pipeline system, which can reduce the installation difficulty of the pipeline and independently carry out construction with an easy control over the construction, thus guaranteeing the construction period of the system and the installation quality of the pipeline system. The invention also provides an installation method of the automatic spraying pipeline system. The automatic spraying pipeline system comprises a main pipeline, a stem pipeline, a fire-fighting hose, fittings fixed on a keel and a shower nozzle, and is characterized in that: the main pipeline and the stem pipeline are arranged inside a roof truss layer above a static pressure box; one end of the fire-fighting hose is connected with the stem pipeline and the other end is communicated with a branch pipeline through bends and short tubes; the short tubes pass through the roof of the static pressure box; the other end of the branch pipeline is connected and communicated with the shower nozzle fixed on the keel. When in installation, the main pipeline and the stem pipeline inside the roof truss layer above the static pressure box are installed at a certain place; the fire-fighting hose is installed with one end being connected with the stem pipeline; the stem pipeline is installed at the place and is communicated with the other end of the fire-fighting hose through the short tubes and the bends; connectors fixed on the keel are installed and a FFU keel is connected with the branch pipeline through the connectors of the keel; the air pressure and the water pressure of regional pipelines are tested; the shower nozzle is installed.

The invention relates to the technical field of concrete admixtures and in particular relates to an unsaturated polyether monomer, a preparation method and application of the unsaturated polyether monomer, and a polymer prepared thereby. According to the structural design of introducing glycidyl ether into hydrophobic blocks, a certain amount of hydrophobic units and hydrophobic groups are introduced and controlled in a carboxylic copolymer molecular structure, so that the viscidity of a cement-based material is reduced under the action of a water reducing agent, and the dispersion property of the water reducing agent and slump retaining performance are improved. The unsaturated polyether monomer disclosed by the invention comprises multiple polymerization units, and has high double bond retention rate and excellent polymerization activity; by controlling the reaction conditions, the main chain and side chains of the product can be subjected to accurate design at different positions and lengths, so that the prepared water reducing agent is rich in product structure and is slightly influenced by factors such as high-temperature environment change, material quality fluctuation and the like, the concrete workability and high slump retaining performance are maintained, and convenience is brought to production and transportation and construction control.

The invention discloses a step-shaped concrete casting mold assembly and a cast-in-situ construction method, comprising: cleaning the base surface → supporting the side form → pouring the concrete at the lower part of the step → laying a movable die and clamping → pouring the upper part of the step Concrete→Remove the movable die→Tighten the surface of the lower part of the steps→Tighten the surface of the upper part→Conservation→Remove the side formwork and continue the maintenance. Since the present invention adopts the dynamic operation process of "installation later and removal first" of the movable die and the form support method that the 45° contact surface between the movable die and the upper inner mold can be combined and separated, the inner side of the cast-in-place concrete step is completely solved. There is a problem with stencil imprints on the surface. The overall structure of the steps casted by the present invention is complete, without cold joints, and the internal quality meets the design standards; the surface has no template marks, no cracks, no bubbles or spots, pockmarks, etc., and the appearance quality meets the requirements of the specifications, and can be applied to various The cast-in-place stepped concrete project has significant practical significance and good social benefits.

The invention relates to the technical field of building materials, in particular to a self-compacting concrete prepared by using modified ceramic polishing powder and a preparation method thereof. The self-compacting concrete includes the following raw materials: cement, modified ceramic polishing powder, fly ash, coarse aggregate, artificial sand, water and polycarboxylate superplasticizer; the modified ceramic polishing powder is made of ceramic polishing powder The powder is obtained by soaking treatment in coupling agent solution and soaking treatment in coupling agent solution added with cellulose ether and organosilicon antifoaming agent in turn; the specific surface area of ​​the ceramic polishing fine powder is 800-830 m 2 / kg. The self-compacting concrete mixed with modified ceramic polishing powder can effectively improve the compactness of the concrete, and can also improve the fluidity and water retention of the self-compacting concrete. It can effectively solve the problem of shortage of mineral admixture resources.

The invention discloses a steel casting capable of forming a full cast steel structure, which comprises a joint core area part, a vertical component, and a horizontal curve component which are all fixedly and integrally connected. Through the adoption of the steel casting, some structural steel constructions with complex modeling form a structure through the connection between steel castings, so as to be able to lower the construction difficulty and construction cost, improve the load-bearing capacity of the structure, shorten the mounting period of the structure, and be able to perfectly realize functions and effects of the constructions.

The invention provides an intelligent control system and method of a movable work shed, and belongs to the technical field of integrated control. The intelligent control system comprises the work shedand a controller, wherein the work shed can move along a preset track through walking wheels at the bottom, each walking wheel is driven by an independent motor, and each motor drives the corresponding walking wheel to move according to an instruction of the controller; load detection sensors are arranged on the motors, when the motor load is smaller than a preset value, parts of walking wheels are taken as drive wheels, and when the motor load is larger than or equal to the preset value, all the walking wheels are taken as the drive wheels. According to the intelligent control system and method of the movable work shed, automatic movement, automatic deviation correction, automatic obstacle recognition and automatic risk alarming of the work shed along the preset track are realized, decentralized control systems of the work shed are integrated, construction control of operators is convenient, a control response effect of each system is improved, and series of risk accidents caused byoperational errors are avoided.

A double-wall steel hanging box cofferdam provided with rapid mounting and dismounting double lock catch devices is characterized in that a first C-shaped pipe and a second C-shaped pipe are welded toa second box wall board of a first steel hanging box, and a third C-shaped pipe and a fourth C-shaped pipe are welded to the box wall of a second steel hanging box; triangular stiffening plates the same in structure are welded to the first C-shaped pipe, the second C-shaped pipe, the third C-shaped pipe and the fourth C-shaped pipe correspondingly; two end wing plates of first joist steel and second joist steel are arranged in the first C-shaped pipe, the second C-shaped pipe, the third C-shaped pipe and the fourth C-shaped pipe correspondingly; first long-strip-shaped stiffening plates are welded to the first C-shaped pipe and the third C-shaped pipe, and second long-strip-shaped stiffening plates are welded to the second C-shaped pipe and the fourth C-shaped pipe; the first lock catch device and the second lock catch device are arranged on the front-back outer walls of the first steel hanging box and the second steel hanging box correspondingly, the first steel hanging box and the second steel hanging box are installed and fastened together, and the double-wall steel hanging box cofferdam provided with the rapid mounting and dismounting double lock catch devices is formed.

The invention provides a slope hydraulic self-propelled concealed-rail drag mold, which comprises travel beams, a balance beam, a template system, a working platform, a hydraulic system and the like, wherein each travel beam consists of a crossbeam, a front sliding seat, a back sliding seat, adjusting screws and a cylinder block; the front sliding seat is in rigid connection with the crossbeam, and the back sliding seat is hinged with the crossbeam; the template system consists of a template, a bearing beam and a template system support frame; the bearing beam is parallel to the balance beam; two ends below the bearing beam and the balance beam are respectively provided with a travel beam in the vertical direction; the rear end of the template is provided with the template system support frame; the working platform is parallel to a rail, and is obliquely tensioned on the template system support frame through a spiral lock button; the hydraulic system mainly comprises a hydraulic pump station, advancing cylinders, a hydraulic pipeline and the like; the hydraulic pump station is arranged in the middle of the bearing beam; and an advancing cylinder is arranged below each of two travel beams. The drag mold is not limited to the slope gradient, can ensure that concrete can be continuously poured in large cube amount and large area, and ensures high pouring speed and good quality.

The invention discloses a construction method of an upper structure of a steel-concrete overlapping beam. The method includes the following steps of erection of flexible temporary buttresses, mounting of supporting seats, mounting of pre-embedded parts, hoisting of steel beams, fine adjustment of the beams, beam section welding, first-time removing of supports, pouring of bridge deck slab sections, prestress tension, second-time beam lowering and removing of the flexible temporary buttresses. According to the construction method of the upper structure of the steel-concrete overlapping beam, the construction process of erection of the steel beams and a large-tonnage steel beam fine adjustment device by means of a flexible buttress method has the advantages of convenient operation, fast construction and the like, devices that are used in the construction method are common devices that are made of common materials and can be applied to common bridge construction sites, costs are low, and the application range is wide.