503 results about "Shear wall" patented technology

The invention discloses an interface enhanced composite shear wall based on a high-ductility cement-based material. The high-ductility cement-based composite materials are formed in edge constraint areas on the two sides of the shear wall, and the common concrete is formed in a core area in the middle of the shear wall. The interface separation net is a high-strength ribbed non-dismantling formwork net and is vertically arranged at the junction of the edge constraint area and the core area, the section of the interface separation net is in a periodic concave-convex wave shape or a stepped shape, and a macroscopic mechanical meshing interface is formed. The interface seaming ribs are U-shaped ribs and are horizontally arranged at the positions of the inter-rib slurry penetrating nets of the interface separation net in a penetrating mode, one ends of the interface seaming ribs are anchored to the edge constraint area common steel bars, and the other ends of the interface seaming ribs extend into the core area and are connected with longitudinal and transverse rib cross joints of the composite material grid ribs in a hooked mode; the problems of rigidity mutation and slippage of the heterogeneous material interface are solved by utilizing the geometric occlusion effect of the interface separation net and the anchoring effect of the deep bolt pins and joints of the interface sewing ribs, cooperative work of a high-ductility material and common concrete is achieved, and good anti-seismic performance is achieved.

The invention relates to the technical field of constructional engineering, in particular to a temperature control anti-cracking process for mass concrete shear wall structural engineering. Comprising the following steps that raw materials of concrete are optimized, and the mix proportion of the concrete is determined; a layered and segmented pouring and alternate warehouse method is adopted for construction; the intelligent temperature control system is buried, and the temperature of the concrete is monitored in real time; after concrete pouring is completed, a dynamic heat preservation and maintenance process is carried out; dynamic stress release is carried out, stress monitoring and kerf release are carried out, and an early warning system is established; post-cast strip sealing and micro-expansion compensation are conducted; through the mode, the concrete temperature is accurately monitored in real time, the temperature change conditions inside and on the surface of the concrete are mastered in time, temperature control measures are dynamically adjusted according to actual temperature data, the temperature difference inside and outside the concrete is effectively controlled, and the crack problem caused by temperature stress can be effectively prevented.

The invention provides a reinforcing steel bar positioning and stabilizing frame for reinforced concrete pouring, and relates to the technical field of building components, the reinforcing steel bar positioning and stabilizing frame comprises a stabilizing assembly, the stabilizing assembly is composed of a supporting rod and a positioning mechanism, and the stabilizing assembly can be constructed along with the binding procedure of a reinforcing steel bar mesh, so that the reinforcing steel bar mesh does not need to be specially supported and elevated subsequently; the operation process is simplified, the construction efficiency is greatly improved, meanwhile, reinforcement meshes at the deep positions in the formwork of the shear wall and other components can be heightened and supported, the quality defects of reinforcement exposure, insufficient thickness of a protection layer and the like after pouring are avoided, and the problem that in existing reinforced concrete construction, the construction cost is low is solved. The arrangement of cushion blocks or supporting frames usually lags behind the procedures of steel bar binding and formwork erecting and cannot be completed along with synchronous binding of steel bars, so that the cushion blocks are difficult to go deep into the inner sides of formworks of shear walls and other components to accurately block up the steel bars, and the problems that the steel bars are exposed and the thickness of a protective layer is insufficient after the parts are poured are easily caused.

The utility model provides a special-shaped steel pipe column and support combined shear wall, and relates to the technical field of assembly type buildings, the special-shaped steel pipe column and support combined shear wall comprises special-shaped steel pipe columns and framework girders, the framework girders are arranged between two adjacent special-shaped steel pipe columns, the upper ends and the lower ends of the special-shaped steel pipe columns are used for supporting floors, the special-shaped steel pipe columns comprise square columns and a plurality of U-shaped columns, webs used for positioning and abutting against the two ends of the U-shaped column are arranged on the side portions of the square column. According to the special-shaped steel pipe column and support combined shear wall, the square column serves as the central section, the U-shaped columns are welded in the direction perpendicular to the four webs of the square column to form the special-shaped steel pipe concrete columns and the beam columns, space arrangement is flexible, the component finished product is high, the beam columns effectively improve the structural rigidity, and the use area rate of a building is high.

The utility model relates to basement outer wall water stop steel plate place exempts from cutting exempts from reinforcing's assembly type stirrup, including upper ellipse hoop, lower ellipse hoop, stand hoop, sleeve, telescopic adjusting lever, round cake shape steel clamp plate, single limb mountain type muscle, water stop steel plate, be provided with many stand hoops between upper ellipse hoop and lower ellipse hoop, the outside of stand hoop is provided with the sleeve, and single limb mountain type muscle is connected with stand hoop through the sleeve, the inside of every stand hoop is provided with telescopic adjusting lever, and the end of telescopic adjusting lever is fixed round cake shape steel clamp plate, water stop steel plate inserts the cavity that upper ellipse hoop, lower ellipse hoop, stand hoop enclose, and round cake shape steel clamp plate is located at both sides of water stop steel plate, and the round cake shape steel clamp plate of water stop steel plate both sides is close to water stop steel plate. The utility model basement outer wall water stop steel plate place stirrup adopts assembly type stirrup structure, can effectively avoid the collision problem of the steel bar of basement outer wall and shear wall edge component or frame column intersection, guarantees water stop effect.

The invention discloses a construction structure and a construction method of a secondary structure assembly type wall pier, the construction structure comprises an assembly type wall pier, a shear wall, a top plate, a bottom plate, a screw rod component and a clamping piece, the side edge of the assembly type wall pier is connected with the shear wall through the screw rod component, and the upper part of the assembly type wall pier is connected with the top plate through the clamping piece; and a triangular wooden wedge is arranged between the lower part of the fabricated wall pier and the bottom plate. The prefabricated wall pier has the beneficial effects that the prefabricated wall pier is adopted and prefabricated in advance, the reinforcing nut is pre-embedded in the main body structure in advance, the PVC sleeve is pre-embedded in the prefabricated wall pier, and during secondary structure construction, the PVC sleeve of the prefabricated wall pier is aligned with the pre-embedded nut of the main body structure and is connected with the pre-embedded nut of the main body structure through the harness cord screw; a gasket and a fastening nut are screwed and reinforced in a horn mouth on the outer side of the assembly type wall pier, a bedding mode is adopted for fixing a floor, and a U-shaped clamp and a shoot nail are adopted for reinforcing the bottom of a beam plate; the problems that the formwork is difficult to reinforce, time-consuming and labor-consuming during construction of the small door buttress are solved; site construction is convenient, and the construction period is shortened.

The application provides a circular shear wall-spiral anchor composite structure foundation and a construction method, and belongs to the technical field of electric power engineering.The upper reinforced concrete slab and the lower reinforced concrete slab are respectively located at the upper part and the lower part of the circular shear wall foundation, the prestressed longitudinal tendon is located in the circular shear wall foundation and is connected with the flange plate of the steel pipe pole through the foundation bolt after penetrating through the upper reinforced concrete slab; the anchor rod of the spiral anchor is connected with the spiral anchor joint after penetrating through the lower reinforced concrete slab, the bottom of the prestressed longitudinal tendon is connected with the spiral anchor joint, and the spiral anchor joint is connected with the spiral anchor joint reinforcing bar embedded in the circular shear wall foundation; the application can effectively reduce the foundation burying depth, thereby reducing the amount of reinforced concrete, reducing the excavation depth, and reducing the construction cost, the labor cost and the transportation cost.

The application provides an assembled shear wall structure and a construction method thereof, and relates to the technical field of buildings. After the installation and fixation of a lower prefabricated wall are completed, a prefabricated beam is hoisted, a beam end connecting assembly at the end of the prefabricated beam is connected with a lower wall top connecting assembly arranged at the top of the lower prefabricated wall, after the connection is completed, the prefabricated floor is hoisted, the prefabricated floor is placed on the prefabricated beam or the top of the lower prefabricated wall, then an upper prefabricated wall is hoisted, an upper wall bottom connecting assembly on the upper prefabricated wall is connected with the lower wall top connecting assembly, thereby the connection of the prefabricated beam, the upper prefabricated wall and the lower prefabricated wall is completed, the installation process does not need to set a temporary support and wait for the strength formed by post-poured concrete, the continuous and rapid assembly construction can be realized, the construction period is effectively shortened, and the technical problem that the connection between the prefabricated concrete floor and the shear wall, the beam and the shear wall in the prior art needs to use a grouting sleeve connection construction period which is long and needs to use an additional temporary support structure is solved.

The application discloses a method for extracting internal points of shear walls for judging the position relationship of shear walls, comprising the following steps: obtaining the graphic elements of shear walls, and extracting the maximum closed curves of the shear walls; obtaining the bounding box according to the maximum closed curves, and obtaining the center point of the bounding box; judging the position relationship between the center point of the bounding box and the corresponding maximum closed curve, and obtaining the internal points of the shear walls; if the center point is inside the maximum closed curve, the center point of the bounding box is the internal point; if the center point is on one side of the maximum closed curve or outside the maximum closed curve, the center point is adjusted to the inside of the maximum closed curve, and the internal points of the shear walls are obtained. The application also discloses a method for judging the position relationship of shear walls, which judges the position relationship of two shear walls according to the position relationship between the internal points of the two shear walls and the maximum closed curve of another shear wall. The method solves the problem that the method for judging the position relationship of two shear walls through the center point of the bounding box is not accurate.

The application discloses a type steel beam shear wall system which is easy to process, assemble, decorate and bear stress, and relates to the technical field of building engineering, and comprises the following steps: hollow type steel beam framework, which comprises at least three type steel columns arranged at intervals along the same horizontal direction and a plurality of inter-column plates arranged at intervals along the radial direction of the type steel columns; and plain concrete, which covers the hollow type steel beam framework, wherein the thickness of the plain concrete on the outer side of the framework is 20-50 mm; and the two ends of the type steel column respectively extend out of the outer part of the plain concrete to form anchoring sections. The application solves the problems of the existing building engineering, such as poor stress system, non-dense sleeve grouting at the connecting part, insufficient node stress and seismic performance, the need of fireproof paint in the steel-concrete composite structure system, long construction period, high cost and difficulty in decoration.

The application relates to the technical field of building information model construction, in particular to a parameterized modeling method of a fabricated shear wall BIM structure. The method obtains actual spatial positions, actual stresses, bottom areas, reference spatial positions and reference stresses of the fabricated shear wall; according to the included angle between each fabricated shear wall and its adjacent fabricated shear wall in each construction layer, the difference between the actual stresses and the reference stresses of the adjacent fabricated shear wall, the difference between the actual spatial positions and the reference spatial positions of the adjacent fabricated shear wall and the bottom area of the fabricated shear wall, the layer internal error degree of the construction layer is obtained; according to the layer internal error degree of each construction layer and the difference between the layer internal error degree of the lower construction layer and the layer internal error degree of the lowest construction layer, the comprehensive error degree of the construction layer is obtained to mark the high-risk construction layer. The application accurately marks the high-risk construction layer, realizes accurate identification and visualization of construction errors, and is beneficial to timely management and control of the construction errors.

A prefabricated shear wall multifunctional steel bar limiting device comprises a customized mold table, multiple sets of fixed pedestals are symmetrically arranged on the front, back, left and right sides of the edge of the customized mold table in the radial direction, a height adjusting rod is fixed to each fixed pedestal, and a movable pedestal is in sliding fit with the height adjusting rods and is locked through a locking assembly. According to the multifunctional reinforcing steel bar limiting device for the prefabricated shear wall, the horizontal distance between reinforcing steel bars on the same layer can be accurately positioned, the vertical distance between the reinforcing steel bars on the upper layer and the lower layer can be effectively adjusted, and the reinforcing steel bar binding quality and efficiency are improved; in the concrete vibrating process, displacement deformation of the reinforcing steel bars can be effectively limited, the production quality of the pre-supporting shear wall is guaranteed, and multiple purposes, repeated utilization and combined use are achieved.

The invention discloses a modular assembly type aluminum alloy-concrete composite shear wall structure and a bending bearing capacity calculation method thereof, and belongs to the technical field of building structures. In order to solve the problems that an existing double-steel-plate-concrete composite shear wall has many welding defects, steel plates are prone to rusting, the operation and maintenance cost is high, and the construction efficiency is low, an aluminum alloy material is adopted for replacing steel, an integrally-formed aluminum alloy wall plate and a modular opposite-pull connecting system are designed, and the solid-phase friction stir welding technology with low heat input is combined; the combined shear wall with the characteristics of light weight, high strength, corrosion resistance and convenience in construction is formed, and an accurate bending bearing capacity calculation method is provided. The structure can improve the construction efficiency and reduce the operation and maintenance cost, is suitable for super high-rise buildings, special environment buildings and structures and other scenes, and has remarkable engineering application value.

The invention discloses an engineering bamboo composite shear wall which comprises an engineering bamboo shear wall body, steel connecting pieces corresponding to the joints of all floors are arranged at the two ends of the engineering bamboo shear wall body, the steel connecting pieces are provided with anchoring parts, and prestress tensioning pieces are arranged on the outer side of the engineering bamboo shear wall body. The pre-stress tensioning part is connected with the anchoring part in a matched mode, a pre-stress adjusting part is arranged on the pre-stress tensioning part, and the pre-stress tensioning part applies vertical pre-compression to the engineering bamboo shear wall body through adjustment of the pre-stress adjusting part, so that pre-compression of the engineering bamboo shear wall body is completed. The anchoring component is integrated on the floor steel connecting piece, and is matched with the outer side prestress tensioning piece and the adjusting component to apply vertical pre-compression to the shear wall body to realize pre-compression, so that the vertical rigidity, the compression bearing capacity and the deformation resistance of the engineering bamboo shear wall can be remarkably improved.

The invention discloses an assembly type shear wall bolt connection box with a stress gradient transition function, and belongs to the technical field of assembly type reinforced concrete structure connection. The connecting box comprises a steel box body, an anchoring back plate arranged on the back face of the box body and array type anchoring ribs arranged on the anchoring back plate. The metal outer wall of the connecting box is coated with a buffer layer formed by a high-strength rubber elastomer or epoxy resin mortar, and the thickness of the buffer layer is gradually reduced in the anchoring direction, so that rigidity gradient transition from the steel box to the concrete is achieved. The structure can effectively weaken stress concentration near the end of the anchor bar, delays cracking and crushing of concrete on the edge of the connecting box, remarkably improves ductility and crack resistance of the vertical abutted seam joint of the fabricated shear wall, and better achieves the design goals of strong connection and weak components.

The utility model relates to the technical field of assembly type building construction, in particular to an assembly type shear wall vertical connecting structure which comprises an upper shear wall and a lower shear wall, H-shaped steel is vertically arranged on the horizontal edge of the upper shear wall and the horizontal edge of the lower shear wall, and a steel plate is fixedly arranged on the top of the lower shear wall. A profile steel connecting piece is transversely arranged between the upper shear wall and the lower shear wall, the lower end of the H-shaped steel is fixedly connected with the upper portion of the profile steel connecting piece, and the steel plate is fixedly connected with the lower portion of the profile steel connecting piece. The lower end of the H-shaped steel is fixedly connected with the upper portion of the profile steel connecting piece, and the steel plate is fixedly connected with the lower portion of the profile steel connecting piece, so that shear resistance and energy dissipation capacity of the shear wall are effectively improved, the structure is simple, positioning is convenient, and mounting difficulty of the vertical connecting structure of the shear wall is lowered. And the construction efficiency and safety of vertical connection of the fabricated shear wall structure can be effectively improved.

This utility model belongs to the technical field of reinforced concrete composite shear wall building structures in civil engineering, specifically relating to a bidirectional hollow slab composite shear wall with opening-narrowing stirrups. By setting opening-narrowing stirrups corresponding to the horizontal holes of the bidirectional hollow slab at the edge members at both ends of the shear wall, and by setting longitudinal reinforcement distributed within the wall and longitudinal reinforcement of the edge members at the corresponding positions of the vertical holes of the bidirectional hollow slab and the opening-narrowing stirrups, the structure not only meets design requirements and facilitates construction, but also, due to the special structure of the opening-narrowing stirrups, the constraint area of ​​the opening-narrowing stirrups on the core concrete can be adjusted by the angle formed by the longitudinal and horizontal sections. This allows the constraint effect of the opening-narrowing stirrups on the core concrete to gradually decrease towards the opening end, forming a vertical energy dissipation zone under large horizontal lateral displacement. This effectively controls the structural failure mode and energy dissipation method, achieving a unity of constructability, good economy, and seismic performance in the new composite shear wall structure.

The invention provides a subway construction underground passage anti-seepage structure and a construction method, and belongs to the technical field of subway construction underground passages, the subway construction underground passage anti-seepage structure structurally comprises a base station group, a plurality of corner stand column pieces are vertically arranged at the corners of the top face of the side, away from a shield passage, of the base station group, and a middle stand column piece is vertically arranged in the middle of the base station group beside each corner stand column piece; a shear wall set is poured on the side, close to the shield channel, of the base table set, anti-seepage combination wall sets are arranged between the corner stand column pieces and the middle stand column pieces and between the middle stand column pieces and the shear wall set in a sealed and sleeved mode, and the other three walls are combined into detachable walls through the corner stand column pieces, the middle stand column pieces and the anti-seepage combination wall sets. In addition, after the corner stand column pieces, the middle stand column pieces and the anti-seepage combined wall set are used, the corner stand column pieces, the middle stand column pieces and the anti-seepage combined wall set can be directly dismantled, recycled and reused when a station / entrance is expanded, time and labor are saved, construction waste cannot be generated, and the construction cost is effectively reduced.

The utility model relates to shear wall connecting technical field, concretely to a kind of anti shear formula shear wall upper and lower layer inner wallboard tooth slot type connecting structure, including lower wallboard and upper wallboard, the top of lower wallboard is fixed with multiple uniform distribution teeth, the bottom of upper wallboard is opened with the tooth slot of adaptation in correspondence tooth, the side wall downside of upper wallboard is opened with through-hole in correspondence tooth, and through-hole and tooth slot are communicated, the outer wall of tooth is opened with screw hole, and through-hole and screw hole are corresponded.The utility model is inserted by tooth and tooth slot, so multiple limit connection can be realized, so as to be favorable to the stability after connection is promoted;When bolt is engaged by bolt penetration upper wallboard side wall and the screw hole on tooth, bolt can be abutted to movable rod tail end, so that abutting plate moves upward, and then abutting plate can be abutted to tooth slot inner cavity top, so that reverse abutting is realized, bolt is limited, so as to be favorable to the stability after connection is further promoted.

The utility model provides a be used for shear wall surface inside reinforcing bar's anchoring structure relates to reinforced concrete structure technical field, including wall body and insert wall body in reinforcing bar main part still includes anchoring subassembly, the both sides of wall body are established with mounting hole and assembly hole respectively. In the utility model, the one end of reinforcing bar main part passes through with anchoring plate welding, through setting up a plurality of anchoring rib in reinforcing bar main part other end, a plurality of anchoring rib are inserted in a plurality of recesses respectively, then a plurality of anchoring rib are welded on anchoring pipe, can further strengthen the anchoring effect between anchoring pipe and reinforcing bar main part, and the pull -out protruding can effectively increase the friction between reinforcing bar main body and concrete, improve the pull -out capacity of reinforcing bar main body, and simultaneously even setting up a plurality of steel truss between the inside of reinforcing steel framework and reinforcing bar main body, under the dynamic load effect, a plurality of pull -out protruding and steel truss can effectively prevent reinforcing bar main body to pull out, improved the reliability of anchoring structure.

The utility model discloses a wall masonry system for constructional engineering, which is characterized in that a ground rail assembly (1) provides high-precision guidance, a sliding module (2) drives a masonry manipulator (3) and a grouting assembly (4) to move synchronously, and a brick carrying trolley (5) supplies bricks automatically, so that the automation of the whole process of masonry-grouting is realized. The construction efficiency of the system is improved by 2.5 times compared with that of manual work, the positioning precision reaches + / -0.5 mm, and the system is suitable for prefabricated building and high-rise shear wall construction.

The invention belongs to the technical field of modular buildings, and particularly relates to a concrete module and a production and assembly method. A first shear wall and a second shear wall in the module are wall bodies in the concrete module; the first shear wall and the second shear wall form a first joint through concrete pouring; the first top plate is connected with the first shear wall and the second shear wall through a first formwork arranged on the first shear wall and a second formwork arranged on the second shear wall correspondingly, and the first top plate is connected with the first formwork and the second formwork in a composite mode to form a second joint. And the first bottom pocket and the first shear wall are compositely connected to form a third joint. According to the method, all prefabricated parts are prefabricated and produced independently, then are assembled according to the assembling sequence of the first bottom pocket, the first shear wall, the second shear wall and the first top plate, and are assembled into the concrete module in a connecting mode of concrete pouring or welding or welding and slurry sealing, so that the cost is saved, the production efficiency is improved, and the quality of the module is improved.

The application discloses a cross-rail tunnel arch support shear wall system, which comprises a wall support structure, an arch-shaped conversion structure and a damping structure. The wall support structure comprises frame support conversion columns and an upper shear wall. The two frame support conversion columns are oppositely arranged, and the upper shear wall is connected to the top ends of the two frame support conversion columns. The arch-shaped conversion structure comprises an arch-shaped support beam and an intermediate floor beam. The arch-shaped support beam is erected between the two frame support conversion columns, and the two ends of the arch-shaped support beam are connected to the two frame support conversion columns, respectively. The middle part of the arch-shaped support beam is arched upward to support the bottom of the upper shear wall. The intermediate floor beam is connected to the two ends of the arch-shaped support beam. The damping structure is arranged between the intermediate floor beam and the arch-shaped support beam to reduce vibration. According to the force characteristics of the arch-shaped support beam, the frame support conversion column, the damping member and the intermediate floor beam and other structures are combined to form a cooperative force system, the load capacity is high, and the reserved space of the lower structure is large.

The utility model discloses a combined type wall-attached fixing frame switching device of a construction elevator. The combined type wall-attached fixing frame switching device comprises an attached shear wall, a wall-attached frame, a wall-attached base and a switching assembly. One end of the attachment frame is detachably installed on the elevator, the switching assemblies are installed at the other end of the attachment frame, the number of the switching assemblies is two, and the switching assemblies are installed on the attachment shear wall. The switching device has the advantages that the switching device can adapt to various different types of building structures including concrete structures, steel structures, special-shaped structures and the like, and the problem that in the prior art, adaptability is poor is solved; particularly, the installation process is relatively simple in building of a construction elevator in a short-leg shear wall area, special skill personnel such as professional welders are not needed, the idea of clamping and fixing is innovatively adopted, safety and practicability are guaranteed, and the utilization rate is increased. And when the construction elevator is disassembled, the structure can be disassembled, is applied to the next construction project, and has the characteristics of being reusable and green and environment-friendly.

The utility model is applicable to the technical field of constructional engineering, and provides a fabricated building shear wall which comprises a shear wall body, the shear wall body comprises wallboards and reinforcing steel bars, and the reinforcing steel bars are provided with connecting holes; the connecting assembly comprises an inserting rod, a sliding plate, a connecting rod and a fixing piece, the inserting rod is inserted into the connecting hole, the connecting rod is rotationally connected with the sliding plate, the sliding plate is arranged on the inserting rod, the inserting rod is provided with a containing groove, and the connecting rod is arranged in the containing groove; in the utility model, one group of reinforcing steel bars is inserted into the other group of reinforcing steel bars, so that the connecting holes are mutually aligned; then, inserting connection rods are inserted into the connection holes, and it is ensured that a pair of sliding plates connected to the inserting connection rods in a sliding mode are arranged between a pair of connection holes; a worker slides a pair of sliding plates so that the sliding plates can abut against the steel bars; the two groups of reinforcing steel bars are mutually fixed through the fixing pieces; the device is simple to operate, suitable for all steel bar materials, free of professional personnel and equipment and wide in application range.

The application discloses a T-shaped section combined shear wall with damage directional control and post-earthquake recoverability, which comprises a wall limb constraint end edge constraint H-shaped steel and a flange wall limb flat steel plate, the flange wall limb flat steel plate is connected with a flange wall limb free end edge constraint H-shaped steel, a web wall limb steel plate is connected with the wall limb constraint end edge constraint H-shaped steel, and the web wall limb steel plate is connected with a web wall limb free end edge constraint H-shaped steel; the web wall limb steel plate comprises a web wall limb upper flat steel plate, a web wall limb lower flat steel plate and a corrugated steel plate; the web wall limb free end edge constraint H-shaped steel comprises a web wall limb free end upper edge constraint H-shaped steel and a web wall limb free end lower edge constraint H-shaped steel; and the application is connected through energy dissipation steel plates; the corrugated steel plate and the energy dissipation steel plate are adopted as core components for improving the recoverability of the seismic performance of the shear wall, and the seismic energy of the embedded flat steel plate and the constraint edge component is effectively dissipated.

This utility model discloses a safety belt fixing device for shear walls, belonging to the field of building construction technology. The safety belt fixing device for shear walls in this utility model includes a main screw and a fixing pin. One end of the main screw is hinged to the middle of the fixing pin, and the other end of the main screw is threaded to a lifting eye nut. A locking nut is also threaded onto the main screw. One end of the fixing pin is connected to a retractable steel wire rope. This utility model has a simple structure, is easy to operate, lightweight and portable, and has high safety. It solves the problem of the firmness of the safety belt hook anchor point and allows for quick installation and disassembly from the inside of the wall, greatly reducing the safety risks to operators.

The application discloses a self-resetting assembled concrete shear wall device, which comprises an assembled concrete shear wall I, an assembled concrete shear wall II, a shearing type energy dissipation section and a self-resetting connection; the assembled concrete shear wall I comprises end longitudinal reinforcement I, sleeve longitudinal reinforcement I, middle longitudinal reinforcement I, a grouting sleeve and a pre-buried component; and the assembled concrete shear wall II comprises end longitudinal reinforcement II, sleeve longitudinal reinforcement II, middle longitudinal reinforcement II and a pre-buried component. The self-resetting connection at the left and right sides of the bottom provides energy dissipation capacity and self-resetting capacity, and prevents the concrete at the left and right sides of the bottom from being damaged under the action of tension. Meanwhile, the shearing type energy dissipation section at the middle bottom can provide sufficient shearing bearing capacity for the assembled concrete beam force wall, so that the shear wall body at the left and right sides of the bottom will not be sheared and damaged after being weakened, and the device has the characteristics of reasonable force bearing, simple structure, good seismic performance, strong self-resetting capacity, small damage after earthquake and the like.

The support-free shear wall comprises a wall body, connecting steel bars are arranged in the vertical direction of the wall body, the upper ends of the connecting steel bars penetrate out of the upper end of the wall body, connecting holes in the vertical direction are formed in the lower end of the wall body, the lower ends of the connecting steel bars are located in the connecting holes, and grouting holes are further formed in the main wall face of the wall body; the grouting holes are communicated with the connecting holes; the U-shaped units are arranged on the side wall surface at intervals in the vertical direction, each U-shaped unit comprises one or more U-shaped steel bars, and the free ends of the U-shaped steel bars are embedded in the wall body; the screw joint unit is arranged on the side wall surface, the screw joint unit comprises a screw tube, and the screw tube is arranged between any two adjacent U-shaped units; the side plates are arranged on the side wall surfaces, the height of each side plate is the same as that of each U-shaped unit, the side plates are located on one side of any main wall surface, only the first connecting piece or the second connecting piece is needed for connection during assembly, and other extra supports are not needed.

The invention belongs to the technical field of civil engineering construction, and particularly relates to a wall formwork construction method which comprises the steps that after shear wall structural steel bars are bound, anchor flukes are welded to the shear wall structural steel bars; a filling mold layer is installed on the anchor fluke side of the shear wall, the thickness of the filling mold layer is equal to the length of the exposed section of the anchor fluke, and therefore the anchor fluke is hidden in the filling mold layer; an outer side wood formwork is installed with the outer surface of the filling formwork layer as the datum plane, an inner side wood formwork is installed on the inner side of the shear wall, and then the wood formworks on the two sides are tied and fixed through split bolts; after the whole formwork of the shear wall is fixed, concrete pouring is conducted; and after the concrete is solidified, the inner side wood formwork, the outer side wood formwork and the filling formwork layer are removed. According to the method, anchor fluke through holes are prevented from being additionally formed in the wood formwork, the operation of anchor fluke hole alignment in the wood formwork installation process is omitted, the construction speed is effectively increased, the labor cost is saved, wood formwork loss is avoided, the formwork turnover frequency is increased, grout overflow and grout leakage can be avoided through the filling formwork layer, and therefore the construction quality is further improved.