1838results about "Forming/stuttering elements" patented technology

The invention provides a fair-faced concrete forming quality control method, belongs to the technical field of fair-faced concrete, and realizes real-time monitoring of a template deformation state by establishing a component geometric dimension reference coordinate system and a template deformation monitoring network. A deep learning model based on a ResNet residual network architecture is adopted to predict dynamic lateral pressure distribution in a concrete pouring process, a deformation compensation algorithm is utilized to accurately calculate a deviation value between an actual size and a design size of a component, a concrete surface quality evaluation system is established to identify surface defects, and a defect distribution matrix is established; and a quality control feedback adjustment mechanism is executed to dynamically optimize and adjust process parameters of subsequent pouring operation, and the technical problem that the geometric dimension precision of a component is difficult to control due to the fact that the formwork deforms under the lateral pressure effect of concrete is solved.

The utility model relates to a turnover internal corner construction formwork which comprises an angle adjusting rod, rotary connecting plates and steel formworks, the length of the angle adjusting rod can be adjusted, the two ends of the angle adjusting rod are connected with the rotary connecting plates respectively, one side of each rotary connecting plate is provided with a set of steel formworks, and the rotary connecting plates are fixedly connected with the steel formworks. Each steel formwork comprises an L-shaped steel plate, a supporting plate and a fixing plate, the edge of one flange of each L-shaped steel plate in the two sets of steel formworks is hinged through a rotating shaft, the opening ends of the L-shaped steel plates of the two sets of steel formworks face the same side, and the supporting plates and the fixing plates are arranged on the edges of the two flanges of each L-shaped steel plate of each set of steel formworks; the supporting plate and the fixing plate are clamped on the two sides of a flange of the L-shaped steel plate respectively and exceed the edge of the flange of the L-shaped steel plate, and the supporting plate, the L-shaped steel plate and the fixing plate are fixedly connected to form a slot. The internal corner construction quality and the construction progress can be improved, and the internal corner can be repeatedly used.

The utility model discloses a template embedded type dam face permanent heat preservation protection module. 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 concrete cantilever structure pull-up formwork construction method which is characterized by comprising the following steps: load calculation and component model selection; pre-burying the U-shaped bolts; pre-burying the upper-section pull rod; i-shaped steel end connecting plates are welded, and double-layer angle steel connecting plates are welded to the cantilever ends of the I-shaped steel; i-shaped steel cantilever girders are installed; assembling a pull rod system; the pull rods are fastened and leveled with a system, the two pull rods are synchronously fastened, the double rods are ensured to simultaneously advance and retreat during adjustment of an adjusting device, and a level gauge is used for observation and leveling after initial adjustment; the formwork frame and the safety enclosure are installed; pull rod pre-tensioning and deflection monitoring are carried out, pre-tension force is applied through an adjusting device, the deflection of the cantilever end is detected, monitoring points are arranged, and a deformation early warning mechanism is established; regulating and controlling concrete pouring; and removing the mold and recycling. The overhanging structure is high in anti-overturning capacity and suitable for large-span and special-shaped overhanging structures, and the safety is remarkably improved.

The invention discloses a steel bar positioning device for an aluminum alloy formwork full cast-in-place outer wall, and relates to the technical field of steel bar positioning, the steel bar positioning device comprises a mounting mechanism, the mounting mechanism comprises a first mounting plate, one side of the first mounting plate is fixedly connected with a fixing plate, and the interior of the fixing plate is in threaded connection with a first screw rod; the lower end of the first screw rod is rotationally connected with a pressing block; and the stretching mechanism comprises a worm gear, one side of the worm gear is connected with a first bevel gear through a rotating shaft, and the surface of the first bevel gear is meshed with a second bevel gear. A unit type positioning mode is adopted, a front-back position adjusting mechanism is arranged in each unit positioning module, the mechanisms are matched with left-right position adjustment of the units, positioning angle multidimension and left-right front-back four-direction positioning are achieved, and compared with manual positioning, positioning is more accurate; different clamps can be replaced according to steel bars of different models, and adaptability is higher.

The invention relates to the technical field of aluminum formwork construction, aims to solve the problems that in traditional aluminum formwork construction, grout leaks at formwork abutted seams, bubbles are formed on the surface of concrete, and the concrete forming quality is influenced, and provides a construction method for improving the aluminum formwork concrete forming quality, and the construction method comprises the following steps that S1, an aluminum formwork is deeply designed; s2, factory prefabrication; S3, on-site assembly; S4, concrete pouring; S5, aluminum mold dismantling; the aluminum formwork is optimally designed, the exhaust holes are formed in the formwork, the waterproof breathable film is installed, water vapor on the surface of concrete can be effectively removed, bubbles are prevented from being formed on the surface of the concrete, and the forming quality of the surface of the concrete is improved; the structure of the aluminum mold joint is optimized, a positioning groove is designed at the splicing part of the template, and an elastic sealing embedded strip is designed in the positioning groove, so that the problem of slurry leakage of the aluminum mold joint is effectively avoided; and the attached vibrator is combined with a water-vapor separation structure, so that the overall vibrating effect of concrete in the aluminum mold is improved, and the concrete forming quality is improved.

The invention discloses a prefabricated conical shell steel supporting structure capable of being hoisted for squat silo construction. The prefabricated conical shell steel supporting structure comprises a conical shell wall plate assembly, a ring beam assembly, a radial beam, a lifting lug assembly, an adjustable supporting assembly, an anti-swing assembly, a connecting assembly, an auxiliary positioning assembly and a sling connecting assembly. Core components such as the conical shell wall plate and the supporting framework are all prefabricated in a factory, the quality is controllable, splicing and hoisting are only needed on site, high-altitude erecting operation is greatly reduced, the high formwork erecting risk and the hidden danger of falling objects from high altitudes are reduced, hoisting stability is high, safety is improved, hoisting stress is dispersed through the lifting lug stiffening plates, and the hoisting efficiency is improved. The anti-swing assembly and the cable wind rope cooperatively control swing, it is ensured that the overall hoisting process is stable, structural collision and stress overload are avoided, the splicing precision is high, the adaptability is high, adjustability during installation is achieved through the adjustable supporting assembly arranged on the squat silo top, and it is ensured that the hoisted steel supporting structure can accurately fall on the preset position of the squat silo top.

The invention discloses an adjustable back arris arc formwork structure which comprises a formwork assembly and a hoisting mechanism, the hoisting mechanism is connected with a winch on an operation beam of a tower building machine, the formwork assembly comprises a plurality of flexible plates and a plurality of supporting plates, positioning plates are fixed to the two ends of each supporting plate, and splicing assemblies are arranged on the positioning plates; a flexible plate is connected between every two adjacent supporting plates through an assembling assembly, the flexible plates are elastic, and the front end faces of the flexible plates and the front end faces of the supporting plates jointly form a continuous smooth working face. The rear end face of the supporting plate is connected with a reinforcing back ridge, the middle of the rear end face of the flexible plate is provided with a plurality of connecting blocks, and the reinforcing back ridge is provided with a plurality of adjustable back ridge assemblies. The curvature of the arc formwork can be accurately controlled in the construction process of the tower building machine, and a high-reliability solution is provided for curved surface concrete pouring.

The invention discloses a temperature-resistant, flame-retardant and anti-corrosion composite material for a building as well as a preparation method and application of the composite material, and belongs to the technical field of polycarbonate building materials. The composite material is prepared from the following components in parts by weight: 60 to 80 parts of polycarbonate, 8 to 10 parts of a dispersing agent, 10 to 20 parts of epoxidized silicone rubber, 1 to 5 parts of benzotriazole, 1 to 5 parts of a flame retardant, 3 to 5 parts of a compatible aid, 0.3 to 0.5 part of an antioxidant, 0.2 to 0.5 part of a light stabilizer, 0.15 to 0.3 part of an anti-dripping agent and 0.2 to 0.4 part of a catalyst. According to the composite material, polycarbonate is used as a base material, the flame retardance and the corrosion resistance of the composite material can be remarkably improved by adding the epoxidized silicone rubber and the benzotriazole, the temperature resistance of the material is not obviously reduced, and the service life of the material is prolonged.

The invention discloses an outer containment dome steel mold hoisting structure and method, and belongs to the technical field of civil construction. The hoisting structure comprises a plurality of lifting lugs, a lifting hook, a plurality of steel wire ropes, a plurality of guide assemblies, a plurality of annular limiting assemblies and a plurality of radial limiting parts; the plurality of lifting lugs are fixed on the outer side of the dome steel mould of the outer containment; the lifting hook is connected with the plurality of lifting lugs through a plurality of steel wire ropes to lift the dome steel mould of the outer containment; the guide assembly comprises a guide column and a plurality of pairs of guide limiting pieces; the guide column is vertically fixed at the top of the outer containment; the guide limiting pieces are fixed to the outer side of the outer containment dome steel mold, the multiple pairs of guide limiting pieces are vertically distributed, and each pair of guide limiting pieces is arranged on the two sides of the corresponding position of the guide column; the annular limiting assembly comprises a shell annular limiting piece and a steel mold annular limiting piece. The radial limiting piece is fixed to the top of the outer containment and located on the outer side of the in-place position of the dome steel mold of the outer containment. The method has the advantages of high efficiency, project progress optimization, stable and reliable working quality and the like.

The utility model relates to a subway station cast-in-place concrete side wall large steel formwork supporting system which comprises a bottom plate and a large steel formwork, the bottom plate is provided with a side wall base corresponding to the bottom of a side wall, and a side wall reinforcement cage is bound on the side wall base; the large steel die is arranged on the bearing beam and comprises a large steel die panel, a large steel die support and a cantilever operation platform, the large steel die panel abuts against the side face of the side wall base, the large steel die support is fixed to the back face of the large steel die panel, and the cantilever operation platform is arranged at the top of the large steel die support. The utility model has the beneficial effects that by arranging the bearing beam and the sliding beam structure, the high-precision adjustment of the large steel mould is realized by utilizing the longitudinal jack and the transverse jack, and the sliding resistance can be effectively reduced by fully paving the stainless steel composite plates on the top surface of the bearing beam; three hydraulic rod mounting structures are provided and can be used for solving the problems that a foundation pit inner support exists on a large steel mold, a reverse top plate exists on the large steel mold, and neither the foundation pit inner support nor the reverse top plate exists on the large steel mold.

The utility model relates to a silo conical shell reinforced concrete construction supporting structure which comprises a silo wall and a silo tip conical shell, a plurality of vertical supports are evenly distributed on the inner wall of an upper hole of the silo tip conical shell, a plurality of stand columns are evenly distributed at the upper end of the silo wall, the vertical supports and the stand columns are connected in a one-to-one correspondence mode through pull rods, and a plurality of main supports are evenly distributed on the bottom face of the silo tip conical shell. The main supports are connected with the vertical supports, the main supports are connected with embedded parts in the silo wall, steel formworks are connected between the main supports on the circumference, and longitude secondary supports and latitude secondary supports are further arranged below the steel formworks. The supporting structure is simple in construction, supporting components of a full framing formwork system and a steel truss supporting system from the silo bottom to the silo top are not arranged, steel pipe stand columns in the middle of an umbrella-shaped structure and a plurality of horizontal supports arranged at intervals in the height direction are not arranged, and a large number of turnover materials can be saved.

A concrete building formwork for civil engineering comprises a bottom base plate, a combined rectangular frame plate, pressure applying cover plate assemblies and a material pushing assembly and is characterized in that the detachable combined rectangular frame plate is installed on the upper side of the bottom base plate in a clamped mode, and the pressure applying cover plate assemblies are installed on the upper side of the bottom base plate side by side; the combined rectangular frame plate comprises two groove-shaped plates arranged on the periphery and a plurality of clamping straight plates arranged in the middle, the pressing cover plate assembly comprises a groove-shaped portal frame, a pressing push rod, a centralizer and a cover plate, and the material pushing assembly comprises a beam plate, a sliding rail, a sliding block and a groove-shaped material pushing plate. The two beam plates are fixed to the lower sides of webs of the groove-shaped portal frames side by side. The concrete building template for the civil engineering and the using method thereof have the advantages that pressure and temperature parameters can be monitored in a partitioned mode, the pressure and the temperature can be regulated and controlled in real time according to the characteristics of the concrete solidification process, and rapid demolding can be achieved after a concrete floor slab is formed.

The invention discloses a heat preservation plate and steel frame combined type outer wall formwork, and relates to the technical field of building formworks, the outer wall formwork is composed of a steel frame and a heat preservation plate, a longitudinal connecting assembly is installed on the steel frame, a transverse anti-instability unit is arranged in the longitudinal connecting assembly, and the heat preservation plate is matched and fixed with the longitudinal connecting assembly through a positioning connecting rod. Under the action of self weight, the insulation board can be automatically locked and effectively connected with a wall body. The longitudinal connecting assembly is provided with a through hole, the diameter of the through hole is larger than that of the positioning connecting rod, and therefore automatic positioning and fixing of the insulation board are achieved. The design of an anti-instability unit, a guide sliding groove, a spring assembly and the like ensures that the insulation board is stable and does not fall off. The protection shell is matched with the connecting support, so that the heat preservation plate is safer in the installation process, automatic separation is achieved after concrete pouring, and the disassembly process is simplified. The device has the advantages of being simple in structure, convenient to install, stable and reliable, the construction efficiency can be remarkably improved, and manual operation is reduced.

The utility model belongs to the technical field of building construction molds, and discloses a shaping mold convenient for construction of an arc-shaped roof structure, accurate splicing of arc-shaped template units can be realized through a connection mode of splicing convex blocks, splicing grooves and bolts, the construction accuracy of an arc-shaped roof is ensured, the forming quality of the roof is improved, and the construction efficiency is improved. By arranging the reinforcing assembly, the strength and the stability of the mold are enhanced, the mold is effectively prevented from deforming in the construction process, smooth proceeding of the construction process is ensured, and meanwhile the service life of the mold is prolonged; the arc-shaped template units are made of light materials, so that the overall weight of the mold is reduced, the mold is more convenient and rapid to mount and dismount, and the manpower and time cost in the construction process is reduced; due to the arrangement of the agent layer, the formwork is convenient to disassemble, adhesion between the formwork and concrete is reduced, the repeated utilization rate of the formwork is increased, and the construction cost is reduced.

The invention provides an underwater temporary concrete cofferdam formwork rapid manufacturing, mounting and pouring method which comprises the following steps that bin division is conducted in the length direction of an underwater concrete cofferdam, independent pier bin positions and permeable formwork bin positions which are sequentially and alternately distributed are included, and the adjacent independent pier bin positions and permeable formwork bin positions are connected together; firstly, independent pier bin positions are constructed, and a plurality of independent piers arranged at intervals are formed; then, after the two adjacent independent pier bin positions are connected together through the water-permeable formwork bin positions, concrete is poured into the water-permeable formwork bin positions; and concrete in the areas of the independent piers and the permeable formworks is cured, after curing is conducted to a set degree, the bin position formworks of the independent piers are dismantled, and concrete cofferdam construction is completed. According to the method, the construction efficiency is greatly improved, the construction safety and stability are guaranteed, and the construction period is effectively shortened.

The invention discloses a non-dismantling formwork, a production process thereof and a construction method of the non-dismantling formwork in a building wall, and relates to the technical field of wall buildings, and the non-dismantling formwork is mainly composed of a hydrophobic autoclaved aerated concrete plate, adhesive glue, a heat preservation core material and an anchoring part. After being subjected to composite processing in a factory, the formwork is transported to a construction site and is used as an outer formwork in the concrete pouring process. Due to the fact that the non-dismantling formwork and the cast-in-place concrete can be integrally formed, the process is simpler and more convenient compared with external thermal insulation of an outer wall. In addition, the non-dismantling formwork forms a cavity-free composite heat preservation structure, the product shows excellent fireproof, waterproof and anti-falling performance, due to the fact that a water repellent is used in the production process, the risk that the adhesive loses efficacy due to water seepage of the non-dismantling formwork is effectively avoided, the non-dismantling formwork has excellent hydrophobic performance, water erosion is effectively resisted, and the service life of the non-dismantling formwork is prolonged. The internal thermal insulation layer is protected from being damaged, and the problem of cracking or falling caused by environmental change is avoided.

The invention relates to the technical field of constructional engineering, in particular to a building formwork which comprises formwork single plates and connecting pieces, every two adjacent formwork single plates are spliced and connected through the corresponding connecting piece, round clamping bases are arranged on the two sides of each connecting piece, clamping holes allowing the round clamping bases to be inserted in a matched mode are formed in the four sides of each formwork single plate, and locking mechanisms are arranged on the end faces of the round clamping bases. A pushing mechanism is arranged on the face, not making contact with concrete, of the single formwork plate, the locking mechanism comprises traction arms and clamping arms, a guide rod is fixed to the end face of the circular clamping base, the guide rod is sleeved with a ring sleeve in a sliding mode, the multiple traction arms are hinged to the ring sleeve, the multiple clamping arms are hinged to the circular clamping base, and the traction arms are hinged to the clamping arms in a one-to-one correspondence mode. When the ring sleeve is pushed to move through the pushing mechanism, the joint of the traction arm and the clamping arm protrudes towards the periphery in an expanding mode and abuts against and is matched with the port of the clamping hole to form mechanical locking, and when the pushing mechanism is operated, a special tool does not need to be used, and a traditional wedge-shaped clamping piece is replaced for locking.

The invention provides a concrete pouring formwork intelligent temperature control system and a regulation and control method thereof.The concrete pouring formwork intelligent temperature control system comprises a formwork assembly, a temperature monitoring module, a heating module and an intelligent temperature control module, the formwork assembly is composed of a panel, channel steel, an aluminum beam and an opposite-pull screw and used for forming a concrete pouring outline, and the temperature monitoring module is arranged on the inner side of the panel and used for monitoring the temperature of the panel; the concrete is solidified in the concrete after being poured, the temperature monitoring module is electrically connected with the intelligent temperature control module and used for collecting temperature information, and the heating module is arranged on the surface of the outer side of the panel, electrically connected with the intelligent temperature control module and used for receiving a temperature adjusting signal; the regulation and control method comprises the steps of pre-assembling the formwork assembly, installing the heating module, hoisting and fixing, installing the temperature monitoring module and monitoring pouring construction in real time. The problems that the turnover efficiency of scattered supporting and dismounting formworks is low, the concrete pouring temperature monitoring accuracy is low, and the temperature difference is difficult to control are solved.

The invention relates to the technical field of building construction, aims to solve the problems that in the prior art, when an embedded sleeve is installed in a civil air defense door frame wall, positioning is difficult, and the installation precision is low, and provides a construction method for fixing the embedded sleeve of the civil air defense door frame wall. S2, surveying and setting out; s3, the end die and the bottom die are installed; s4, rechecking is carried out; s5, reinforcing steel bars are bound, and pre-embedded sleeves are installed; s6, side formworks and connecting angle aluminum are installed; s7, wood formworks are installed; by arranging the positioning base plate, the embedded sleeve can be synchronously placed when reinforcing steel bars are bound, the installation accuracy of the embedded sleeve is guaranteed, and the installation accuracy and the forming quality of the embedded sleeve can be guaranteed by positioning the sleeve. The method is rapid in construction, stable in quality and high in one-time construction qualification rate, and the construction accuracy of the civil air defense door frame wall embedded sleeve can be really ensured.

The utility model discloses a constructional engineering cost preliminary budget combination template, relates to the technical field of constructional engineering, and aims to solve the technical problem that the current constructional engineering cost preliminary budget combination template is inconvenient to quickly replace, the constructional engineering cost preliminary budget combination template comprises a fixed bracket, and a mounting plate is arranged on the fixed bracket. According to the utility model, the four groups of templates are arranged in the mounting plate, the four groups of templates are respectively the basic data entry area, the cost calculation area, the result display area and the related information supplement area, and then the quick fixing structures corresponding to the mounting rods on the templates are arranged on the back surface of the mounting plate, so that when the templates are mounted, the inserting rods of the quick fixing structures are pulled, and the templates can be quickly fixed. And at the moment, the spring is in a compressed state, then the template is placed in the placement groove of the mounting plate, the mounting rod of the template penetrates through the first through hole, and then the insertion rod is pushed to be quickly reset and inserted into the second through hole of the mounting rod under the action of the spring, so that quick mounting of the template can be realized.

The present invention relates to the technical field of building formwork, and provides a modular housing building formwork system, which includes a formwork component and a fixing component, and further includes a formwork removal structure for removing the formwork component. The formwork removal structure includes a wedge-shaped strip rib, and the inclined angle structure of the wedge-shaped strip rib is used to jack up the formwork component, so that it gradually moves away from the concrete wall, so as to realize the stable and controllable process of removing the formwork component. When removing the formwork of the present invention, no auxiliary tools such as a formwork removal hammer and a formwork removal rod are required, the formwork component will not be damaged, the operation is convenient and fast, the labor intensity of construction workers is reduced, and the operation efficiency is improved; high-strength alloy is adopted to enhance the durability and stability of the building formwork system; by rotating the vertical screw rod to drive the wedge-shaped strip rib to jack up the vertical plate to make the formwork component, the problems that the formwork falls randomly easily and damages the concrete wall and the formwork in the traditional formwork removal operation are overcome, the recycling utilization rate of the formwork component is improved, and the recycling cost is reduced.

The invention provides a steel-aluminum-wood combined construction method for a variable-cross-section multi-layer high-cylinder structure, and belongs to the technical field of building construction.The method comprises the steps that a lowest joint combination scheme is determined by establishing a multi-material integration template library and adopting a game optimization algorithm; an adjustable steel frame supporting system is built to adapt to different section changes; prefabricating a high-precision modular aluminum template unit; a three-dimensional multidirectional support system based on minimum spanning tree optimization is installed to ensure uniform stress; steel-aluminum-wood layered mold matching is carried out to ensure accurate forming of the variable cross section; an annular bracket special structure construction process is executed; performing multi-point monitoring and dynamic adjustment on the template system to control the deformation to be within 2mm; the butterfly clamp is used for accurately fixing to prevent slurry leakage and slab staggering; and the optimal pre-tightening force is calculated in real time by applying a multi-parameter support system optimization function, so that the technical problem that the construction precision of a variable-cross-section multi-layer high-cylinder structure is difficult to guarantee in the prior art is solved.

The utility model discloses a Larsen steel sheet pile permanent enclosure structure system which comprises reinforcing steel bars which are vertically welded on concave surfaces of the inner surface of a Larsen steel sheet pile at intervals; the battens are vertically arranged on the inner sides of the steel bars in the concave surfaces of the inner surface of the Larsen steel sheet pile, and the battens are connected with the steel bars; the wood formworks are laid on the outer sides of the steel bars in the concave surfaces of the inner surface of the Larsen steel sheet pile, the wood formworks are fixedly arranged on the battens through nails, the wood formworks block the concave surfaces to form hollow cavities, the outer surfaces of the wood formworks and the convex surfaces of the inner surface of the Larsen steel sheet pile are located on the same plane, and the outer surfaces of the wood formworks and the convex surfaces of the inner surface of the Larsen steel sheet pile are located on the same plane. A plane structure is formed on the inner surface of the Larsen steel sheet pile; the waterproof coiled material is laid on the inner surface of the Larsen steel sheet pile; and the drift sand is densely filled in the cavities of the concave surfaces of the inner surface of the Larsen steel sheet pile. The utility model has the advantages of high structural strength, good bearing capacity, good non-deformability, good waterproof performance, short construction period and low cost.

The invention relates to a construction method based on a heavy cover plate building machine, which specifically comprises the following steps: S1, mounting the building machine, mounting a structural column pre-embedded bracket along a poured structural column, and mounting a latticed column at an interval of the structural column; s2, loading and unloading blocks are mounted on the structural column pre-embedded brackets and the latticed columns; s3, parallel rails are laid on the unloading blocks; s4, a plurality of corresponding guide wheel moving assemblies are arranged on the track at intervals; s5, a truss girder is installed on the guide wheel moving assembly; s6, a U-shaped frame is installed between the truss beams; s7, a hydraulic jack and a slidable door type supporting frame are installed on the U-shaped frame; s8, a detachable formwork assembly is installed; and S9, beam slab concrete is poured. The construction efficiency of the concrete floor cover plate can be improved, and during slip form construction, the formworks are stacked in the empty space after being disassembled and can move to the next construction section in the direction perpendicular to the concrete beam.

The invention discloses a cold joint control method for pouring concrete with different strength grades and a temperature control box for a pump pipe. The method comprises a concrete preparation process, a concrete pouring process and a maintenance monitoring process. By utilizing the characteristic that the concrete is easy to heat and difficult to cool, the temperature of the concrete is reduced at the beginning of pouring different kinds of concrete, and then the temperature of the to-be-poured concrete is adjusted to be 1-3 DEG C higher than that of the poured concrete according to the temperature of the poured concrete, so that the solidification speed of the poured concrete is smaller than that of the to-be-poured concrete; the purpose of simultaneous solidification is achieved, the problem that cold joints are generated due to different solidification time is solved, and the method is suitable for pouring concrete of different strength grades. Besides, by means of the arrangement of the metal formworks and the semiconductor chilling plates, continuous low-temperature output is carried out during pouring and concrete solidification, the solidification time is uniform, meanwhile, the complexity of pipeline arrangement is lowered, occupied space in concrete is reduced, and construction convenience and construction efficiency are improved.

The invention discloses a cast-in-place prefabricated building formwork suitable for columns or beams, which comprises a cylindrical formwork shell and stirrups fixed on the formwork shell, and the upper end and the lower end of the formwork shell are provided with connection matching parts matched with the adjacent formwork shell; the formwork shell is defined by steel plates, and the stirrups are jointly composed of the steel plates and rod-shaped pieces fixedly connected to the inner side faces of the steel plates. A stress test result proves that a column and beam component formed by the cast-in-place prefabricated formwork can better form a restraining effect on cast-in-place concrete, especially increase a restraining area, so that the overall shearing resistance and the bearing capacity of a building are improved, and the cast-in-place prefabricated formwork has important significance on earthquake resistance of the building under the earthquake condition.

The invention discloses a modular dual-channel column head quality repairing method and system. The method comprises the steps that three-dimensional scanning is conducted on a column head area, a digital model of a defect part is generated, and defect causes are analyzed in combination with the model; according to the obtained data and in combination with the structural characteristics of the column head, design calculation of the top-back frame is conducted, frame body use parameters are determined, and the top-back frame is erected; loose concrete around the column top defect part is chiseled away, laitance and dust are removed, a flat chiseling face is formed, and constructional column steel bars are exposed; the exposed reinforcing steel bars are derusted and coated with an anti-rust coating; installing a template at the defect part; a first grouting pipe and a second grouting pipe are arranged on one side of the formwork, and a grouting process observation opening and a grouting completion observation opening are formed in the other side of the formwork; grouting materials are poured in the first grouting pipe and the second grouting pipe in a staged mode, and when grout evenly flows out of an observation opening to block the grouting pipes and the observation opening, repairing operation is completed; local repairing of the column head is achieved, the filling efficiency and quality are improved, and the engineering cost is reduced.

The invention relates to the technical field of concrete pouring template reinforcement, and discloses a concrete pouring template reinforcement device for a sewage treatment inclined tube sedimentation tank, which comprises a pouring template, a soft rubber gasket and a sliding block are tightly attached to the inner surface of the pouring template, and cement at a mounting hole can be prevented from being squeezed and seeping out during pouring, so that the concrete pouring template reinforcement device is convenient to use. The circulating threaded rod can rotate along with rotation of the fixing screw when the fixing screw is installed, the circulating threaded rod rotates on the inner wall of the limiting groove to extrude the inner wall of the fixing screw, the circulating threaded rod only rotates and does not extrude the inner wall of the fixing screw when rotating by a certain angle in the reverse direction, and the conical end of the circulating threaded rod is wrapped with soft rubber. The binding force with concrete is weak, the circulating threaded rod is easy to detach, and the left recess is filled with a waterproof material in a mixed manner, so that the wall surface is prevented from being damaged by knocking the wall surface, vibration is generated, a gap between the fixing screw and the concrete is enlarged, the seepage-proofing time is shortened, and the concrete is prevented from being extruded to permeate from a mounting hole.

The invention discloses a sandwich composite building template and a preparation method thereof, and belongs to the technical field of composite building template materials.A surface layer of the sandwich composite building template is prepared from glass fibers recycled from blades of a wind driven generator, high-density polyethylene, a compatilizer, a first lubricant and a first nucleating agent as raw materials; preparing a surface layer of the sandwich composite building template by using the crushed particles of the blades of the wind driven generator, polypropylene, a toughening agent, a second lubricant, a flame retardant, an antioxidant, an ultraviolet absorbent and a second nucleating agent as raw materials; the method comprises the following steps: mixing recycled wind driven generator blade broken particles with polypropylene to obtain a core layer, filling polyethylene with glass fibers recycled from wind driven generator blades to obtain a surface layer, carrying out hot pressing for composite molding, and controlling the thickness to obtain the sandwich composite building template of the wind driven generator blade recycled material. The sandwich composite building template has the advantages of light weight, high deformation resistance, high strength, high modulus and low preparation cost.