596results about How to "Shorten construction time" patented technology

The invention discloses a template embedded type dam face permanent heat preservation protection module and a prefabrication and construction method. Comprising a heat preservation core layer, a facing anti-seepage protection layer is arranged on the side, close to a concrete pouring formwork, of the heat preservation core layer, an internal pressure-bearing protection layer is arranged on the side, close to dam surface layer crack limiting steel bars, of the heat preservation core layer, and a thermal broken bridge supporting keel is arranged in the heat preservation core layer; an anchoring device is arranged in the area between the internal pressure-bearing protection layer and the dam surface layer crack limiting steel bars. The modular prefabrication and construction method is adopted, the prefabrication and installation method of a single module is simple and efficient, details such as anchoring protection measures are fully considered, the engineering construction operability is high, convenience and high efficiency are achieved, and the construction time of the heat preservation layer is greatly saved.

The invention discloses a sleeve type bending limiting device convenient to disassemble, and relates to the technical field of ocean pipe cable protection equipment. The bending limiter comprises a plurality of bending limiting units and a plurality of sleeves, and the adjacent bending limiting units are connected through the sleeves; the bending limiting units are used for containing ocean pipe cables, and the ends of the bending limiting units are provided with connectors. The sleeves comprise a first sleeve and a second sleeve, one sides of the first sleeve and the second sleeve are connected through a connecting piece, and the other sides of the first sleeve and the second sleeve are connected through a bolt; and clamping grooves are formed in the first sleeve and the second sleeve. The bending limiting unit is matched with the sleeve, bending deformation of the bending limiting device is achieved through movement of the connector in the clamping groove, the bending moment of the ocean pipe cable is transferred, the stress concentration condition of the bending limiting device is remarkably optimized, the protection performance of the ocean pipe cable in the complex seabed environment is enhanced, and the service life of the ocean pipe cable is prolonged. And in addition, disassembly and replacement are convenient when faults occur in the service process, and later maintenance is facilitated.

The invention relates to the technical field of HDPE pipeline shipping, in particular to an HDPE pipeline mooring and positioning system and method.The HDPE pipeline mooring and positioning system comprises a barge, a crane ship, a tugboat, a plurality of auxiliary ships and a plurality of positioning anchors, the tugboat is used for dragging an HDPE pipeline, the barge and the crane ship are used for positioning the HDPE pipeline from the two ends of the HDPE pipeline, and the auxiliary ships are used for positioning the HDPE pipeline from the two ends of the HDPE pipeline. The positioning anchors are symmetrically arranged on the two sides of the HDPE pipeline and used for positioning the HDPE pipeline, and the auxiliary ship is used for moving the HDPE pipeline. Compared with a traditional steel pipe pile construction technology, the mooring positioning system provides stable positioning points through the positioning anchors symmetrically arranged on the two sides of the HDPE pipeline, construction steps are simplified through cooperative operation of a tugboat, a barge, a crane ship and an auxiliary ship, particularly, complex steel pipe pile mounting and dismounting do not need to be conducted, the construction time is greatly shortened, and the construction efficiency is improved. And the construction efficiency is obviously improved.

The invention provides a stud ceramic ring rapid breaking and cleaning device and a construction method. The stud ceramic ring rapid breaking and cleaning device comprises at least two breaking execution units, a hinge transmission unit, a clamping fixed part, a clamping movable part, an anti-sputtering baffle, a first operating rod, a second operating rod and a hose. The crushing execution units are arranged on the lower portion of the inner side of the movable clamping part and the lower portion of the inner side of the fixed clamping part, one end of the hinged transmission unit is connected with the lower end of the anti-sputtering baffle, the other end of the hinged transmission unit is connected with the movable clamping part and the fixed clamping part, and the upper end of the anti-sputtering baffle is connected with the end of the hose. The first operating rod is arranged on the clamping fixed part, and the second operating rod is arranged on the clamping movable part. The ceramic ring crushing device has the beneficial effects that due to the adoption of the technical scheme, through the design of the multiple crushing execution units, pressure can be applied to a ceramic ring from multiple directions at the same time, the crushing speed and efficiency are remarkably improved, and the construction time is shortened; and through the combination of the anti-sputtering baffle and the dust collector, the ceramic ring disintegrating slag is effectively prevented from splashing.

The invention provides a hydrogen energy power system suitable for a magnetic suspension railway vehicle. The hydrogen energy power system comprises a hydrogen storage system, a hydrogen fuel cell system, a heat dissipation and cooling system, an air filter, a connector and an electronic control unit (ECU). The hydrogen storage system comprises a hydrogen storage control unit (HSU), the hydrogen fuel cell system comprises a power control unit (PCU), and the ECU is used for collecting and processing state information of each system and sending out a control instruction; the ECU is connected with the PCU and the HSU, and the ECU serves as a main control unit and is responsible for receiving an instruction from a vehicle or a train operator and coordinating work of the PCU and the HSU according to the current running state of the vehicle; and the ECU sends a power demand instruction to the PCU and sends a hydrogen supply instruction to the HSU so as to ensure that the fuel cell can output corresponding power according to needs. The engineering construction cost of the track in the project is reduced, the project construction time is saved, funds are saved, and the method is environment-friendly.

The utility model discloses a stainless steel piling device for square pile construction, which relates to the technical field of piling, and comprises a mounting shell, a mounting column fixedly connected to the rear end of the outer wall of the mounting shell, a walking crane fixedly connected to the rear end of the mounting column, and a mounting mechanism, moving rods are fixedly connected to the sides, away from each other, of the two moving shells, baffles are fixedly connected to the sides, away from each other, of the two moving rods, the outer walls of the two moving rods are sleeved with springs, and the inner surfaces of the two springs make contact with the outer walls of the two moving rods; the first motor drives the positioning shell, the rolling wheels and the moving shell to conduct auxiliary limiting on the pile rod, deviation is avoided in the pile descending process, the inclination phenomenon of the pile body is reduced, the time for repositioning or correcting the pile body by workers is not needed, the construction time and cost are reduced, and meanwhile abrasion of the inner walls of the moving shell and the positioning shell to the outer wall of the pile body is reduced.

A control method for zero-allowance construction of a main beam of a large gantry crane comprises the steps that the two ends of the main beam and sub-beams are divided to form two end beams and two sub-beams, then the two sub-beams are sequentially divided to form a plurality of segmented beams of any length, the distance between the edge of each segmented beam and an adjacent large partition plate needs to be 300 mm, welding compensation is added to an upper panel, a lower panel and a web of each segmented beam, and then the main beam and the sub-beams are welded. The method comprises the following steps: splicing a plurality of segmented beams to form sub-beams, splicing the sub-beams to form a main beam, carrying out a load test on the main beam, after the final load test is passed, keeping the crane no-load, and at the moment, measuring and recording a camber value and a profile of the main beam. And the turnover and construction time is shortened. The number of the segments is reduced, the construction continuity is improved, and the redundant procedures of manual cutting of the grinding amount and on-site beveling in the assembling stage of the small segments are abandoned.

A high-efficiency tunneling method for straight-line slotting of empty holes in large-section tunnels comprises the following steps: firstly determining the surrounding rock grade and blasting excavation footage, and determining the blasting cycle footage according to the surrounding rock grade and referring to the design specification; calculating various blasting parameters, and calculating various blasting parameters according to the types of blasting equipment, explosive parameters, rock parameters, tunnel excavation cross-sectional area, and cycle footage; preparing blasting design, and making good blasting technical and safety disclosures; completing drilling of different types of blastholes at various locations; organizing personnel to clean and inspect different types of blastholes at various locations; charging and filling, and detonating, completing charging and filling of different types of blastholes at various locations, laying out in-hole detonating caps and outside-hole connecting detonators according to the blasting parameter table, and detonating according to the blasting process; ventilating and discharging, and then measuring the tunnel blasting cycle footage and over-excavation and under-excavation, and adjusting the next cycle blasting plan according to the current blasting effect and surrounding rock conditions.

The movable concrete 3D printing equipment comprises a driving main machine, a mechanical arm and a printing assembly installed at the movable end of the mechanical arm, and the printing assembly comprises two sets of extrusion heads and a distance adjusting component used for adjusting the distance between the two sets of extrusion heads; the printing assembly further comprises a reinforcement assembly arranged on the opposite side of the distance adjusting part, and the reinforcement assembly comprises a material storing and conveying part which is used for stacking and storing the reinforcing rib pieces and conveying the reinforcing rib pieces to the grabbing position of the material grabbing and discharging part in a grouping mode. The grabbing and placing part is used for grabbing the reinforcing rib sheet on the outermost side from the grabbing position and placing the reinforcing rib sheet on the position, needing to be reinforced, of the printed object; through the design of simultaneous pouring of double heads, synchronous printing of multiple layers of walls can be achieved, and printing of the next layer does not need to be conducted after the previous layer is completed. Especially when a structure with an inner layer and an outer layer is printed, the two sets of extrusion heads finish the outer layer printing task and the inner layer printing task respectively, the construction time and period are effectively shortened, and the printing efficiency is greatly improved.

The invention discloses a fabricated shear wall component positioning and mounting system and method. The system comprises a steel bar frame arranged at the top of a lower-layer shear wall component and triangular frames arranged on the side face of a to-be-mounted layer shear wall component in parallel at intervals. A connecting handrail is arranged on the tripod; the positions of electrical wiring preformed holes and embedded bolts are positioned by arranging a steel bar frame at the positions of hanging nails on a lower-layer shear wall component, so that the accuracy of embedding of wire pipes and bolts is ensured; the in-place installation track of the to-be-installed layer shear wall component is controlled through the positioning grooves in the triangular frames, so that connection between the to-be-installed layer shear wall component and top joint bars of the lower layer shear wall component is accurate; the connecting handrails are used for assisting in in-place mounting of the to-be-mounted layer shear wall component and the lower layer shear wall component, shaking in the connecting and positioning process of the shear wall and the joint bars of the base is avoided, and the assembling efficiency of the shear wall is improved.

The invention provides an embankment anti-seepage treatment method based on water conservancy construction, and relates to the field of water conservancy projects, and the method comprises the following steps: A, excavating at an embankment position needing to be implemented according to a construction drawing to form an embankment foundation, constructing on the embankment foundation to form anti-seepage geotechnical cloth, and compacting the anti-seepage geotechnical cloth; b, an anti-seepage panel is constructed on the anti-seepage geotechnical cloth, and the anti-seepage panel is compacted; c, paving a cushion layer and a transition layer on the anti-seepage panel according to construction requirements; d, burying different intelligent sensors at different parts of the constructed dike, and constructing a real-time monitoring network; and E, transmitting the data acquired by the sensor to a remote monitoring platform through the Internet of Things technology, and analyzing and processing the data. A traditional water conservancy construction dike anti-seepage method is improved, a physical anti-seepage structure and an intelligent monitoring technology are combined, leakage problem early warning can be timely and accurately carried out, effective repairing measures are rapidly taken after early warning, and the dike anti-seepage treatment performance is greatly improved.

The invention relates to the technical field of bridge construction, in particular to a matching beam automatic adjusting bottom die system which comprises a bottom die trolley and an electric control case, fixing plates are arranged on the bottom die trolley, fixing rods are symmetrically fixed between the fixing plates, the two ends of the fixing plates are further connected with mounting plates respectively, positioning frames are arranged on the mounting plates, and the positioning frames are connected with the electric control case. A positioning frame is arranged on the base, a mounting frame is movably clamped in the positioning frame, a limiting plate is further movably clamped in the mounting frame, a Y-direction jack and an X-direction jack are installed on the outer side of the positioning frame and the outer side of the mounting frame respectively, a Z-direction jack is installed at the upper end of the limiting plate, and a connecting piece is connected to the movable end of the Y-direction jack and the outer side of the mounting frame. According to the bottom die system capable of automatically adjusting the matching beam, on the basis of an intelligent measuring system, the bottom die trolley is improved, automatic adjustment control over the bottom die is achieved, high-precision adjustment processing of the bottom die is conveniently and rapidly achieved, and the construction time is effectively shortened.

The invention discloses a production method for automatically prefabricating a T-shaped beam, which is characterized by comprising the following steps of: (1) prefabricating a T-shaped beam; the method comprises the following steps: positioning a movable pedestal, manufacturing and mounting a web steel bar, integrally hoisting the web steel bar into a mold, closing a hydraulic template, manufacturing and mounting a top plate steel bar, integrally hoisting the top plate steel bar into the mold, mixing and transporting T-beam concrete, pouring the T-beam concrete, demolding the T-beam and moving the T-beam to an intelligent steam-curing chamber, generating steam by a combustion boiler, intelligently steam-curing the T-beam, moving the T-beam to an intelligent tensioning area, and tensioning the T-beam. And anchor sealing and grouting are conducted. An automatic T-beam prefabricating system comprises a reinforcing steel bar machining and mounting center, a concrete pouring center, a T-beam curing center, a T-beam tensioning and grouting center and a beam yard intelligent monitoring center, and is characterized in that the reinforcing steel bar machining and mounting center, the concrete pouring center, the T-beam curing center and the T-beam tensioning and grouting center are connected with the beam yard intelligent monitoring center. The production period is short, the speed is high, and the maintained T-beam is uniform in color and luster and good in quality.

The invention discloses a high-performance organosilicon waterproofing agent and a preparation method thereof, and belongs to the technical field of organosilicon waterproofing agents. The high-performance organosilicon waterproofing agent is prepared from the following raw materials in parts by weight: 100 parts of alkyl alkoxy silane, 40 to 60 parts of absolute ethyl alcohol, 20 to 40 parts of deionized water, 0.1 to 0.5 part of glacial acetic acid, 0 to 5 parts of silane coupling agent, 0 to 10 parts of epoxy silicone oil, 0 to 5 parts of epoxy resin and 0.1 to 0.5 part of curing agent, wherein the mass sum of the silane coupling agent, the epoxy silicone oil, the epoxy resin and the curing agent is greater than 0. The preparation method comprises the following steps: dropwise adding a deionized water and acetic acid mixed solution into alkyl alkoxy silane, reacting, neutralizing and filtering to obtain a silicon resin prepolymer, adding the silane coupling agent, the epoxy silicone oil, the epoxy resin and the curing agent, and reacting for a period of time to obtain the high-performance organosilicon waterproofing agent. The preparation method of the high-performance organosilicon waterproofing agent provided by the invention is simple, and the prepared material has good waterproofness and can be used in the field of highway waterproofing.

The invention provides a pumped storage power station underground powerhouse exploration method. The method comprises the steps that a preset arrangement space of an underground powerhouse is obtained; a tunnel boring machine is adopted to excavate a first exploration hole from the lower reservoir of the pumped storage power station to the direction of the preset arrangement space; adopting the tunnel boring machine to excavate a horizontal second exploration hole from the tail end of the first exploration hole in the length direction of the preset arrangement space; a horizontal exploration branch hole is excavated in the middle of the second exploration hole through a drilling and blasting method, geological exploration test is conducted through the exploration branch hole, and the final arrangement space of the underground powerhouse is determined; a third exploration hole is spirally and downwards excavated from the tail end of the second exploration hole through the tunnel boring machine; a horizontal fourth exploration hole is excavated from the tail end of the third exploration hole in the length direction of the final arrangement space through the tunnel boring machine; and the tunnel boring machine is adopted to excavate a fifth exploration hole from the tail end of the fourth exploration hole to the lower reservoir. The exploration method for the underground powerhouse of the pumped storage power station is simple, convenient, high in construction efficiency and high in resource utilization rate.

The utility model provides an underground structure top plate hole temporary plugging structure which comprises a retaining wall arranged above a top plate and surrounding the outside of a hole, and the top of the retaining wall is provided with a tongue-and-groove; the cover plate group comprises a plurality of cover plates which are transversely arranged one by one, and the cover plate group is arranged in the tongue-and-groove to seal the top opening of the retaining wall; the waterproof layer is laid on the cover plate group; and the pavement layer is paved on the waterproof layer. According to the utility model, construction and dismantling are effectively facilitated, the construction cost can be effectively reduced, the construction time is shortened, and a good leakproof effect is achieved.

The equipment for construction of the reinforcement core wall of the earth and rockfill dam comprises a track conveying mechanism and a detection mechanism, the rail conveying mechanism comprises a guide pipe, an electric winch, a pulley, a box body, a supporting ejector rod, an electric fixing branch mechanism and a fixing shell which are installed together. And the electric detection mechanism is mounted in the fixed shell. The reinforcement core wall construction method comprises seven steps. A large amount of earth and rocks do not need to be excavated and transferred on the earth and rockfill dam in advance, the reinforcement cage processing station, the concrete raw material storage yard, the mixing station and the like are arranged on the downstream of the earth and rockfill dam body, and related materials which are processed on the downstream of the dam body in advance are conveyed to an operation area on the dam body through the rail conveying mechanism. And before safety accidents such as sinking and backward toppling occur to the track conveying mechanism, workers can be prompted to refix the track conveying mechanism through the detection mechanism in time, and accidents such as safety accidents occurring when the track conveying mechanism conveys materials are prevented. The construction cost is saved, and the construction time is shortened.

The invention relates to the technical field of highway engineering, and discloses a middle-guide-free multi-arch tunnel preceding hole counter-force pre-applying design method which is based on a radial reinforcing anchor rod and comprises the steps that a middle-guide-free multi-arch tunnel preceding hole counter-force pre-applying design method is adopted, and the middle-guide-free multi-arch tunnel preceding hole counter-force pre-applying design method is adopted; radial reinforcing anchor rods are arranged at the position, close to the arch shoulder of the rear hole side, of the front hole in a driving mode, unstable surrounding rock of the triangular area is reinforced through the radial reinforcing anchor rods, and radial pre-applied counter force is provided so that the arch shoulder structure of the front hole can be effectively restrained. After the preceding hole is excavated, the counter-force pre-applying design method for the preceding hole of the middle-guiding-free multi-arch tunnel can guide the arch shoulder radial reinforcing anchor rod to be driven at the most economical and effective position, angle and length through calculation, unstable surrounding rock in a triangular area is pre-reinforced before the following hole is excavated, and tension is provided to restrain the deformation of the arch shoulder structure; therefore, possible cracking and even damage of the first hole structure are prevented, the local stability of the hidden middle wall side of the first hole is improved, and tunnel structure safety and construction safety are guaranteed.

The invention provides an auxiliary device for constructing a guide wall of an underground diaphragm wall and a construction method of the auxiliary device, the auxiliary device comprises a plurality of auxiliary units which are spliced and connected, and each auxiliary unit comprises an adjustable supporting frame unit and wall guide plate units which are symmetrically arranged on the two sides of the supporting frame unit; during guide wall construction, under the supporting effect of the adjustable supporting frame unit, one part of the guide wall plate unit is connected with an original guide wall steel bar structure to form one part of the guide wall steel bar structure, and the other part of the guide wall plate unit serves as a guide wall pouring formwork. When the auxiliary device is used for constructing the underground diaphragm wall guide wall, due to the fact that the auxiliary device is provided with the structure of the supporting frame and the structure of the guide wall pouring formwork, the procedures of formwork installation, formwork supporting frame welding and the like do not need to be conducted independently, the traditional guide wall construction mode is greatly simplified, the construction time is shortened, stability and universality are high, and the construction cost is reduced.

The invention discloses an assembly type ecological building protection structure suitable for a high groundwater level canal section, the assembly type ecological building protection structure comprises a foundation and a protection slope which are symmetrically arranged on the two sides of a canal, the foundation comprises a prefabricated slope toe and a slope toe cushion layer arranged on the lower portion of the prefabricated slope toe, and the protection slope comprises a lock catch brick layer, a first abutment cap, a first honeycomb geocell and other structures. A self-adaptive frost heaving deformation fabricated structure is adopted as a whole, frost heaving force is released, the construction speed is high, meanwhile, synchronous construction can be achieved through the provided construction method, construction is not affected by construction time, construction can be conducted in any season, the construction efficiency is improved, the construction cost is reduced, and synchronous water supply can be achieved in the construction period. The invention further discloses a dynamic safety evaluation system for the channel slope, the system fuses field multi-source monitoring data, realizes automatic monitoring and constructs a comprehensive supervision system in combination with survey data and data, so that problems are found in time, hidden dangers are processed in time, comprehensive management of the channel is realized, and the maintenance cost is reduced.

The invention discloses a high-temperature-resistant, low-smoke, halogen-free, flame-retardant and fire-resistant polyolefin cable, relates to the technical field of cables, and aims to solve the problems that a cable core twisting or welding mode is often adopted for connection of a traditional polyolefin cable in the prior art, operation is troublesome, time and labor are consumed, cable core connection of the cable cannot be conveniently carried out, and practicability is poor. The cable body comprises a cable core and a functional sleeve, the cable core comprises a wire core and an inner sheath, the wire core comprises a conductor, an inner shielding layer, an inner insulating layer and a wire core protection sleeve, one side of the cable body is provided with a connecting piece, the connecting piece is composed of a connecting column and a winding layer, the two sides of the connecting column are symmetrically provided with jacks respectively, and the winding layer is arranged in the cable body. A plurality of connecting holes are formed in the connecting column, the two ends of each connecting hole are communicated with the two inserting holes respectively, a lower conductive plate is fixedly installed on the lower portion of the interior of the connecting hole of the connecting column, a conductive block is fixedly installed in the middle of the upper portion of the lower conductive plate, and an upper conductive plate is arranged above the conductive block.

The invention relates to the technical field of cable trench soil construction equipment, in particular to tamping equipment for cable trench backfill, which comprises a machine body and telescopic drivers symmetrically arranged on two sides of the machine body, the other ends of the telescopic drivers are fixedly connected with a soil shoveling assembly, and the machine body is sequentially provided with a crushing assembly, a leveling assembly and a soil ramming assembly from front to back. One end of the telescopic transmission machine is movably connected with the machine body; the soil shoveling assembly comprises a rotatably arranged soil feeding mechanism, and the telescopic driver adjusts the distance between the soil shoveling assembly and the machine body through the action of a lead screw nut mechanism; the crushing assembly comprises two groups of parallel soil crushing pieces, the two groups of soil crushing pieces synchronously rotate in opposite directions, the soil ramming assembly comprises a rotating piece and four soil ramming units arranged in the circumferential direction of the rotating piece at intervals, and the four soil ramming units are matched with the rotating piece to sequentially reciprocate; according to the invention, backfilling and tamping can be synchronously carried out, the cable trench backfilling construction efficiency is improved, the backfilling is compact, and the labor intensity of workers is reduced.

The utility model belongs to the technical field of building construction, and particularly relates to a portable movable pitched roof construction finalization edge protection device, the periphery of a pitched roof is provided with a gutter, and the device comprises a plurality of finalization edge protection fences, a clamping assembly and a fixing assembly; the clamping assemblies and the shaped edge protective fences are alternately installed in the length direction of the gutter according to construction requirements. Any two adjacent shaped edge-adjacent protective fences are detachably connected and supported through a group of clamping assemblies, the lower parts of the clamping assemblies are clamped on a convex outer wall body on the outer side of a gutter, and one side, close to a pitched roof, of each clamping assembly is fixedly connected with a fixing assembly; the fixing assembly forms a transverse support on the inner side of the gutter in the width direction and plays a role in fixing the clamping assembly. According to the utility model, the assembly is convenient, the construction time is shortened, the waterproof structure of the roof cannot be damaged, and meanwhile, the vertical rods and the shaped edge protective fences can be recycled, so that the construction cost is reduced.

A broaching blade is rotationally arranged in a containing groove, the back and the cutting edge of the broaching blade are both arranged in the containing groove, when the tool rotates forwards, the diameter of the maximum contour formed by rotation of a drill bit is larger than that of the maximum contour formed by rotation of a tool apron, and the tool rotates backwards so that the broaching blade can be centrifugally thrown out; and the contour diameter formed by rotation of the cutting edges of the thrown-out reaming blades is larger than the maximum contour diameter formed by rotation of the drill bit. One-time forming drilling and reaming can be achieved, the drill rod and the drill bit do not need to be taken back to reinstall the reaming drill bit after drilling is finished, and the workload and the construction time are effectively reduced; according to the invention, reaming at different drilling depths can be realized, the effect of multi-section reaming can also be realized, and high adaptability to different reaming positions is realized; compared with common anchoring, the chambering anchoring can effectively improve the anti-drawing capacity of anchoring of the anchor rod and the anchor cable, and the supporting effect of an anchoring system can be effectively improved under the condition of the same anchoring number.

The invention relates to the technical field of bridge demolition construction, in particular to a pier column demolition device which comprises a first fixing assembly, a first positioning assembly, a second fixing assembly, a second positioning assembly, a connecting piece and a fretsaw, the first fixing assembly comprises a first cohesion side, the first positioning assembly is connected with the first fixing assembly, and the second positioning assembly is connected with the second fixing assembly. The first fixing assembly comprises a first cohesion side to adjust the posture of the first cohesion side, the second fixing assembly comprises a second cohesion side, and the second positioning assembly is connected with the second fixing assembly to adjust the posture of the second cohesion side. According to the dismounting device for the pier column, due to the fact that the design of the first fixing assembly and the second fixing assembly is adopted, and the posture of the cohesion side is adjusted through the positioning assembly, rapid and accurate fixing and positioning can be achieved outside the pier column, and the problems that in the prior art, fixing equipment is complex in structure and tedious to mount and dismount are effectively solved; and therefore, the technical effects of quickly positioning and reducing the construction time are achieved.

The utility model relates to the technical field of box girder pouring forming, in particular to a box girder pouring forming device which comprises a base, a sliding groove is formed in the base, an outer mold is arranged in the base, a box girder body is arranged in the outer mold, an inner mold is arranged in the box girder body, and a lifting mechanism is arranged in the inner mold. A top die is arranged at the top of the outer die, a vibrating mechanism is arranged at the top of the top die, a feeding port is formed in one side of the vibrating mechanism, and a baffle is arranged on one side of the outer die. According to the box girder pouring forming device, the vibrating mechanism is arranged, bubbles generated in the concrete pouring process can be eliminated through the vibrating mechanism, the sliding groove is formed, the box girder pouring time can be shortened through the sliding groove, the lifting mechanism is arranged, the inner mold can be more convenient to mount and dismount through the lifting mechanism, and then the construction time is shortened; and the working efficiency is improved.

The invention belongs to the technical field of bridge rotation weighing construction, and discloses a bridge horizontal rotation construction weighing auxiliary structure, which comprises at least 2n groups of weighing brackets symmetrically arranged on an upper bearing platform, n is a natural number of 2-6, and each group of weighing bracket comprises a weighing tripod, an upper anchoring assembly and a weighing jack, the weighing tripod is detachably installed on the upper bearing platform through an upper anchoring assembly, a weighing jack is arranged between the weighing tripod and the lower bearing platform, the weighing tripod is composed of a cross arm, an inclined strut and a stand column, and the upper anchoring assembly is composed of an anchoring connecting rod, a nut and a base plate. According to the weighing auxiliary structure, the problem that the height difference between the upper bearing platform and the lower bearing platform is large during weighing can be solved, the weighing jack is arranged on the outer side of the upper bearing platform, and the convenience, safety and reliability of construction can be improved. The invention further provides a weighing adjustment method for bridge horizontal rotation construction, the weighing operation construction process can be simplified, the construction efficiency is improved, the construction risk is reduced, and smooth proceeding of engineering is ensured.

The invention discloses a bridge section steel expansion joint maintenance construction method based on a novel formwork system, and particularly relates to the technical field of bridge section steel expansion joint maintenance construction, and the method comprises the following steps: S1, preparation before construction, S2, on-site construction, and S3, construction summarization. When a traditional profile steel expansion joint is maintained and constructed, (1) flexible materials such as foam plates and cloth which are low in strength and not easy to fix are adopted to fill the joint and support concrete, the concrete in the expansion joint is easy to expand, leak slurry, block and pollute a lower bridge structure, and the working performance of free expansion of the structure is influenced; and (2) the gaps and the retaining concrete are filled with battens or square timbers, so that the installation difficulty is high, the formwork is easy to deviate, and the difficulty of taking out the gap filling material in the later period is high. According to the method, the maintenance construction method that a traditional joint filling material is replaced with the rail inner supporting type aluminum formwork system is adopted, operation is easy, the construction speed is high, precision is high, the side face structure size of the post-cast strip joint can be accurately controlled, and the phenomena of concrete formwork expansion and slurry leakage are eliminated; by changing the specifications of the self-sealing turn buckles, the formwork system can be suitable for construction of various types of profile steel expansion joint structures; meanwhile, in the construction process, through combination of the formwork and the horizontal laser instrument, a traditional rough construction method for controlling the profile steel and concrete surface elevation and flatness is changed, and the overall maintenance construction quality of the profile steel expansion joint structure is improved.