78 results about "Shear reinforcement" patented technology

A light-frame shear wall for resisting lateral forces includes a frame wall, shear reinforcement structure, and sheathing. The frame wall includes a top plate, a sill, a first stud interconnecting the top plate and the sill and a second stud interconnecting the top plate and the sill. The frame wall has a cavity bounded by the top plate, the sill, the first stud, and the second stud. The shear reinforcement structure resists lateral forces experienced by the frame wall. The shear reinforcement structure is disposed in the cavity of the frame wall. The shear reinforcement structure is attached to the first stud and the second stud. The shear reinforcement structure includes a shear member arranged to resist the lateral forces experienced by the frame wall. Sheathing is connected to the frame wall and the shear reinforcement member for supporting the shear wall against shear loads.

The invention provides a device and a construction method for self-prestress shear-resistant reinforcement of a concrete beam based on Fe-SMA battens. The method comprises the following steps: S1, determining the type of the concrete beam; s2, a to-be-reinforced area is pretreated; s3, reinforcing parts are installed; s4, the Fe-SMA batten is excited for the first time; and S5, carrying out secondary excitation on the Fe-SMA batten. The reinforcing device and the construction mode can be suitable for different types of concrete beams, the device is convenient to install, prestress application is convenient and efficient, rapid active prestress reinforcing is achieved by optimizing the temperature rising means of energization excitation, the tedious tensioning process is omitted, and the temperature rising time and the excitation temperature are optimized to achieve controllable damage of the adhesive layer. The invention provides a complete set of method for secondary excitation of the Fe-SMA batten, so that the service life of the reinforced concrete beam is further prolonged; reinforcing members do not need to be replaced, and maintenance cost is reduced; and the method is suitable for long-term service performance recovery and improvement of engineering structures.

The utility model discloses an intra-cavity concrete cleaning device for shear-resistant reinforcement of hollow slab girders, which relates to the technical field of bridge reinforcement and comprises support cloth and two parallel support arms, the two support arms are respectively arranged on two sides of the support cloth, and two ends of the two support arms are connected with folding arms through 90-degree positioning hinges; the folding arms are in a two-section type, the middle of each folding arm is connected through a 180-degree hinge, the folding arms and the support arms are further connected through fixing springs, transverse rigid connection of the support arms after the support arms are unfolded in a cavity is achieved, and supporting positioning blocks are installed on the support arms and used for guaranteeing that the folding arms on the two sides can be unfolded at the same time, and the phenomenon that the folding arms deflect is avoided. The device is convenient to disassemble and assemble, high in flexibility and low in cost, meanwhile, the labor intensity of workers and the overall time cost of a project are reduced, the working efficiency of cleaning concrete in a cavity is improved, and the construction period is shortened.

An assembly tool type truss composite plate and a construction method thereof, comprising an assembly tool type truss, wherein the assembly tool type truss also comprises a shear steel bar bracket and a truss support beam; wherein the shear steel bar bracket is in the shape of a pyramid. The truss support beam in the assembly tool type truss is a tool type assembly structure, wherein a circular hole is provided at the connection position between the truss support beam and the shear steel bar bracket; the truss support beam is arranged in sections, and the truss support beams are connected by a socket method. The construction method thereof comprises sequentially manufacturing a shear steel bar bracket, a T-shaped connection part, a truss support beam, and a bottom plate; connecting a steel bar shear steel bar bracket and a truss support beam; laying a shear steel bar bracket and a truss support beam assembly on the longitudinal and transverse steel bars; pouring concrete of the prestressed composite plate; installing the prestressed composite plate; pouring the second layer of composite concrete; and disassembling the truss support beam.

The invention discloses a welding device with an automatic positioning function for fixing shear bars, and relates to the technical field of welding devices for fixing shear bars. Comprising a bottom frame, an electric sliding frame, an electric rotating disc, a fixing frame, an adjusting base, a high-precision welding assembly, a driven rotating disc, a rotating support and a rotating cylinder. The force transmission spring transmits the pressure to the piezoelectric body through the base plate, so that the piezoelectric body is pressed to generate an electric signal; the control system analyzes the welding slag amount according to the electric signal curve, then the welding temperature of the electric welding device is judged, when the welding temperature of the electric welding device is high, the control system adjusts the welding temperature, metal is prevented from being excessively molten and splashed, and the situation that the follow-up welding quality is affected by the excessively-high temperature is avoided.

The utility model belongs to the field of bridge structures, and relates to a bridge deck pavement for improving the vertical natural vibration frequency of a pedestrian overpass, which comprises shear reinforcements arranged on a bridge deck top plate, the shear reinforcements are connected with a steel box girder top plate through welding, a layer of reinforcement mesh is arranged on the top surface of a rigid pavement, and the thickness of a reinforcement mesh protective layer is 3cm. And the reinforcing mesh is connected with the shear reinforcing steel bars through welding. After the shear steel bars and the steel bar meshes are laid, a C40 shrinkage-compensating fine stone concrete rigid pavement layer with the thickness of 8-10 cm is poured to replace an original mortar layer with the thickness of 5-6 cm, so that the main beam structure forms a similar steel-concrete superposed beam structure, the inertia moment of the cross section of the main beam is effectively increased (the bending-resistant inertia moment of the cross section is 1.3 times larger than that of the rigid pavement layer), and the vertical natural vibration frequency of the structure is improved.

The utility model relates to the technical field of building steel structure transformation, and discloses an elastic column base joint based on a steel structure exposed column base. The elastic column base joint comprises a steel column, anchor bolts, a disc spring set, a disc spring lower square base plate, a disc spring upper square base plate, double nuts, a concrete foundation, an embedded steel plate and shear-resistant steel bars. One end of the anchor bolt penetrates through the bottom plate to be connected with the concrete foundation, the other end of the anchor bolt sequentially penetrates through the steel column, the disc spring lower square base plate, the disc spring set and the disc spring upper square base plate to be connected with the double nuts, the two ends of the disc spring set abut against the disc spring lower square base plate and the disc spring upper square base plate respectively, and the bottom of the embedded steel plate is connected with the concrete foundation. The shear reinforcements are welded to the tops of the embedded steel plates, and the steel columns are limited to the shear reinforcements. The utility model can solve the problems of overlarge internal force, difficulty in transformation and repair, complicated construction and high potential safety hazard possibility of a large number of light steel structure building column foot parts, and has the advantages of reasonable mechanical property and convenience in installation.

To install an economical and rational joint structure between adjacent precast concrete members.SOLUTION: In a joint structure for precast concrete members, a convex side end face provided on one precast concrete member and a concave side end face provided on the other precast concrete member face each other and are joined. A shear reinforcement member is provided protruding near the center of the convex side end face, and a storage space that can store the shear reinforcement member is provided on the concave side end face. A protruding part of the shear reinforcement member protruding from the convex side end face is inserted into the storage space in a state of being isolated in the storage space.SELECTED DRAWING: Figure 1

The utility model discloses a hollow beam plate shear-resistant reinforcing structure which comprises a plurality of hollow beam plates arranged side by side, cavities are formed in the hollow beam plates, a filling cavity is formed between every two adjacent hollow beam plates, a grouting hole is formed in the joint of every two hollow beam plates, and the filling cavities are filled with concrete. An upper connecting plate and a lower connecting plate are arranged on the upper end face and the lower end face of the joint of every two adjacent hollow beam plates respectively, the upper connecting plates and the lower connecting plates are connected through at least two pull rod pieces, the pull rod pieces penetrate through holes of the hollow beam plates, and every two adjacent hollow beam plates are each connected with at least one pull rod piece. The transverse linkage of the hollow beam plate is improved, the hollow beam plate is prevented from independently resisting shear force, the shear resistance of the bridge beam plate is improved, the pull rod piece penetrates through the cavity of the hollow beam plate to be matched with the upper connecting plate and the lower connecting plate, the shear strength of the hollow beam plate can be further enhanced, and the shear bearing capacity of a bridge is actively improved by adopting a reinforcing structure; and the method is suitable for reinforcing the hollow structure of the bridge.

To further reduce a construction traffic regulation time to be accompanied in floor slab renewal construction by detaching an existing floor slab and a main girder while opening traffic.SOLUTION: A cutting method of a floor slab for cutting and detaching a concrete floor slab and a main girder of a bridge at their junction comprises: a reinforcement step of providing a shear reinforcement structure adjacent to a cutting section located at the junction in a bridge axial direction; and a cutting surface formation step of forming a cutting surface approximately parallel to the main girder at the cutting section.SELECTED DRAWING: Figure 2

The invention discloses a concave honeycomb plane truss structure, which is integrally in a concave fish-bellied truss form, and is characterized by comprising a truss upper chord and a truss lower chord which are correspondingly arranged up and down, an X-shaped web member system and an end shear-resistant reinforcing area, the truss upper chord member and the truss lower chord member are connected through an X-shaped web member system, and the two ends of the truss upper chord member and the two ends of the truss lower chord member intersect at the end shear-resistant reinforcing areas. The X-shaped web member system is composed of a plurality of finished integrated crossed diagonal web members. The concave type large-span roof structure system is innovated, a honeycomb-shaped grid formed by the X-shaped web members and the fish-bellied chord members has unique rhythm, is novel in shape, easy to construct and efficient in stress, is a building expression of'following force flow 'in a form' in the digital era, and provides a new choice for the design of a concave type roof building structure.

The purpose is to suppress cracks that occur in reinforced concrete joints where reinforced concrete beams are joined and the main reinforcement bars of the beams are embedded, during an earthquake. [Solution] The beam joint structure comprises a reinforced concrete beam 10 having upper beam main reinforcement 12U and lower beam main reinforcement 12L, a joint portion 20J to which the reinforced concrete beam 10 is joined and to which upper end anchoring reinforcement 32U and lower end anchoring reinforcement 32L that constitute the ends of the upper end beam main reinforcement 12U or lower end beam main reinforcement 12L are embedded, and a non-frame-shaped U-shaped shear reinforcement 40 embedded in the joint portion 20J and positioned so as not to overlap with the upper end beam main reinforcement 12U and lower end beam main reinforcement 12L in a plan view.

The utility model relates to the technical field of existing building reconstruction and extension, especially relates to a beam column connecting structure for new built interlayer in existing building, which comprises a plurality of shear reinforcement implanted outside the original structure column, a reinforcing sleeve arranged around the original structure column and the shear reinforcement, and a filling layer filled between the original structure column and the reinforcing sleeve, wherein the shear reinforcement is implanted at the position of the interlayer beam, the position is surrounded and welded by a steel plate with bolt nails, the gap between the steel plate and the original structure column is filled after the position is adjusted, and high-strength grouting material is used, two groups of T-shaped plates are welded on the side where the interlayer beam is rooted, and the T-shaped plates are connected by steel reinforcement welding, the overhanging length of the T-shaped plate is generally not less than the width of the interlayer beam orthogonal to it. A prefabricated hole is opened at the lower end of the T-shaped plate, so that the interlayer beam reinforcement can pass through and the damage to the original structure is reduced, the structure after completion is more solid and durable, and the utility model can be installed conveniently and has low cost.

The application discloses a welding device with automatic positioning function for fixing shear reinforcement and relates to the technical field of welding devices for fixing shear reinforcement. The welding device comprises a base frame, an electric sliding frame, an electric turntable, a fixing frame, an adjusting base, a high-precision welding assembly, a driven turntable, a rotating support and a rotating cylinder. Different extrusion forces of different particle sizes of welding slag on the scraper plate during scraping are converted into the displacement of the detection rod. The detection rod extrudes the hydraulic oil in the sliding cavity into the extrusion cavity, so that the piston is pressed to slide and extrude the force transmission spring. The force transmission spring transmits the pressure to the piezoelectric body through the backing plate, so that the piezoelectric body generates an electric signal under pressure. The control system analyzes the amount of welding slag according to the electric signal curve, and then judges the welding temperature of the electric welding device. When the welding temperature of the electric welding device is relatively high, the control system adjusts the welding temperature, prevents the metal from being excessively melted and splashed, and avoids the influence of the excessively high temperature on the subsequent welding quality.

The invention relates to a large-section hollow slab beam end shear-resistant reinforcing method and structure, the structure comprises a hollow slab beam, the hollow slab beam comprises a hollow slab top surface and a hollow slab bottom surface which are vertically arranged at an interval, and hollow slab side surfaces located between the front and rear sides and between the left and right sides of the hollow slab top surface and the hollow slab bottom surface; a cavity is defined by the hollow slab top face, the hollow slab bottom face and the hollow slab side faces, brick walls are built at the two ends of a reinforcing area in the cavity, and the reinforcing area is blocked through the brick walls at the two ends and the hollow slab beam side walls. A supporting steel bar set is fixedly arranged in the reinforcing area, a groove is formed in the inner space of the supporting steel bar set, a grouting hole is formed in the top face of the hollow slab, an air bag is placed in the groove, the air bag is placed in the groove through the grouting hole, and a first pouring layer, a second pouring layer and a third pouring layer are sequentially poured in the reinforcing area from bottom to top. Under the condition that the appearance of a bridge is not changed and traffic is not influenced, the shear bearing capacity of the hollow slab is obviously enhanced.

This invention relates to the field of shear capacity testing for hinge joints in hollow concrete slab bridges. It provides a method for testing the contribution of hinge joints to shear capacity in hollow concrete slab bridges, addressing the prominent issue of hinge joint defects during operation, such as cracking, damage, and water seepage, which in extreme cases can lead to "single-slab stress" in the hollow slab. The unbonded hinge joint specimen proposed in this invention eliminates the bonding force at the hinge joint interface by placing a thin film thereon. In this case, the shear capacity of the unbonded hinge joint specimen is borne by the shear reinforcement. This allows for the measurement of strain distribution along the entire length of the shear reinforcement, effectively preventing interference from closely distributed strain gauges on the bond between the shear reinforcement and concrete, and obtaining strain data of the shear reinforcement throughout the loading process. Based on the principle of superposition of components, a formula for calculating the shear capacity of the hinge joint is derived, quantifying the contributions of concrete and shear reinforcement to the shear capacity of the hinge joint.

The utility model relates to the technical field of assembly type building structures, and discloses an integrated assembly type precast beam which comprises a precast beam body, a plurality of rows of longitudinal steel bars are arranged in the precast beam body in the height direction of the precast beam body, and the longitudinal steel bars comprise first longitudinal bars located at the upper end and the lower end of the precast beam body. The two ends of the first longitudinal bars penetrate out of the precast beam body and are horizontally bent in the thickness direction of the precast beam body, and the ends, penetrating out of the precast beam body, of the first longitudinal bars are parallel to one another. The upper surface of the precast beam body is provided with shear reinforcements. In practical application, the problems that the precast beam is difficult to install and poor in forming quality in the assembling process are solved.

The application provides a continuous fiber / hollow microsphere thermoplastic sandwich panel and a preparation method thereof, and belongs to the technical field of composite material forming, and aims to solve the lightweight and shear reinforcement technical problems of resin fiber composite materials. The continuous fiber / hollow microsphere sandwich panel comprises upper and lower fiber fabric layers and a hollow microsphere layer in the middle, and is filled with a resin bonding phase between and inside the layers. The preparation method comprises the following steps: sequentially laying fiber I, hollow microspheres and fiber II on a mold; sealing the mold; guiding a resin solution to the mold through a high-pressure or vacuum pouring process and solidifying; and taking out the mold to obtain the continuous fiber / hollow microsphere sandwich panel. The resin solution comprises PMMA, MMA and an initiator. The forming process of the application is simple, the cost is low, and the hollow microspheres can be uniformly distributed in the sandwich panel layer. The sandwich panel has excellent mechanical properties and good heat preservation effect.

The utility model relates to a shear reinforcement cradle positioning device for prefabricated slab beams, which belongs to the technical field of shear reinforcement installation, and comprises: a cradle positioning trolley body, a top plate steel bar binding cradle and a track, wherein the top plate steel bar binding cradle has a storage platform, and a plurality of positioning ribs are installed on the storage platform, and the shear reinforcement is placed on the positioning ribs, and the positioning ribs are installed on the storage platform at a height that matches the shear reinforcement, so that the welding position of the shear reinforcement is appropriate, and the cradle positioning trolley body moves along the track; the top plate steel bar binding cradle is provided with a comb plate; when the shear reinforcement is positioned and welded, the shear reinforcement is placed on the positioning ribs on the storage platform, and the positioning ribs are used to position the shear reinforcement, and when one group of shear reinforcement is welded, the top plate steel bar binding cradle moves along the track and welds the next group of shear reinforcement, and the shear reinforcement installation operation of the prefabricated slab beam is efficient, the positioning is accurate, the line is smooth, and the height is uniform, which effectively guarantees the subsequent construction quality.

To process high-strength shear reinforcement bars at low cost. SOLUTION: The product, which has a yield strength of 685 MPa or more, is mainly manufactured by two methods. One is to bend it into a loop shape and then close it by welding. The other is to wrap both ends of the loop around the main reinforcement and essentially close it. In the present invention, both ends of the loop are processed into U-shaped hooks at the center of the sides, interlinked, and closed. Because of its high strength, there is no problem with reduced strength and ductility due to welding. Because the U-shape is bent 180 degrees or more, it will not open even if the stress of the yield strength acts on it. Since it is only a bending process, it is advantageous in terms of efficiency and processing costs. The increase in material is kept to a minimum.

The invention provides a stiffened integrated plate, a stiffened integrated laminated plate, a stiffened integrated laminated beam-slab structure and a construction method thereof, and belongs to the field of fabricated buildings, the stiffened integrated plate comprises a hollow plate body and a plate rib connecting piece, a prestressed steel strand is tensioned in the hollow plate body, a plurality of holes are formed in the hollow plate body at intervals in the plate width direction, and plate ribs are formed on the side portions of the holes; the plate rib connecting pieces are at least embedded and installed in the plate rib direction of the hollow plate body, at least one plate rib connecting piece is located at the end of the hollow plate body, a post-pouring cavity capable of being poured firmly is formed in each plate rib connecting piece, post-pouring structural ribs are arranged in the post-pouring cavities, and the plate rib connecting pieces penetrate through additional shear-resistant ribs at the plate thickness center line position to form a post-pouring structure. The pre-stressed steel strand penetrates through the constraint inverted arch, the plate rib connecting piece is matched with the plate rib through the cavity after solid pouring to form a stiffening hidden beam, and the pre-stressed steel strand and the additional anti-shearing rib are connected into a whole, so that the structural safety and the anti-shearing performance are greatly improved.

The utility model discloses a kind of connecting joint of new concrete frame beam and existing concrete frame column, including the shear recess that is chiseled in the outside of existing frame column along circumference, pouring ring beam setting outside shear recess, ring beam is respectively anchored and connected with existing frame column, frame beam by shear reinforcement, form connecting joint main structure at ring beam, ensure the continuous transmission of internal force by ring beam, shear reinforcement includes U-shaped reinforcement, beam longitudinal reinforcement, beam angle bar, different anchoring connection forms are constituted between frame beam, ring beam, existing frame column, jointly as shear reinforcement, can guarantee the shear safety of connecting joint, simultaneously, the main force steel of frame beam does not need to be all implanted existing frame column, optimize the position of the anchoring of traditional connection mode, facilitate construction.

The utility model belongs to the field of shear resistance enhancement of concrete frame nodes, particularly relates to a detachable shear resistance enhancement structure for concrete frame nodes, and aims to solve the problems that the stability and durability of an existing concrete frame are poor when the existing concrete frame is subjected to shear load, the safety and reliability of the whole frame structure cannot be ensured, and the construction cost is low in the using process. In order to solve the problem that potential safety hazards are likely to occur in the prior art, the following scheme is provided: the structure comprises two groups of first angle steel for reinforcing the four corners of the concrete frame, each group of first angle steel comprises two pieces of first angle steel, the same frame main body is arranged among the four pieces of first angle steel, and the four pieces of first angle steel are fixed on the frame main body through first bolts; the first reinforcing mechanisms are arranged on the two sets of first angle steel and used for reinforcing the two sides of the frame body, the four sides of the frame body are reinforced through the first reinforcing mechanisms and the second reinforcing mechanisms, the shearing resistance of the whole joint of the frame body can be effectively improved, and the overall safety and reliability are improved.

The invention discloses an annular foundation reinforcement design method and system for shell unit internal force calculation, and belongs to the technical field of computer aided design, and the method comprises the following steps: S1, obtaining annular foundation size information, load information and project general setting information, and converting the three kinds of information into a structure information file, a load information file and a project general information file in a json format; s2, an annular foundation model is established according to the structure information, loads are arranged according to the load information, SAP2000 software is used for carrying out shell unit segmentation on the annular foundation model, and internal force calculation is carried out; s3, converting an internal force calculation result into a json format, and calculating reinforcement areas of anti-bending reinforcements and anti-shearing reinforcements of the annular foundation according to related design specifications to obtain a minimum reinforcement area; and S4, according to the minimum reinforcement area and the optimal diameter spacing rule in the project general information file, the configuration information of the steel bars of each part of the annular foundation is calculated.

A light-frame shear wall for resisting lateral forces includes a frame wall, shear reinforcement structure, and sheathing. The frame wall includes a top plate, a sill, a first stud interconnecting the top plate and the sill and a second stud interconnecting the top plate and the sill. The frame wall has a cavity bounded by the top plate, the sill, the first stud, and the second stud. The shear reinforcement structure resists lateral forces experienced by the frame wall. The shear reinforcement structure is disposed in the cavity of the frame wall. The shear reinforcement structure is attached to the first stud and the second stud. The shear reinforcement structure includes a shear member arranged to resist the lateral forces experienced by the frame wall. Sheathing is connected to the frame wall and the shear reinforcement member for supporting the shear wall against shear loads.

The present invention relates to an assembled shear-resistant reinforcement device for a small concrete box girder based on a UHPC prefabricated board and a reinforcement method thereof, comprising a UHPC prefabricated board assembled on the outer surface of the small box girder; a plurality of anchor bolt reserved holes are reserved on the outer surface of the UHPC prefabricated board, and correspondingly, anchor bolts corresponding to the anchor bolt reserved holes are pre-buried in the small box girder, the anchor bolts are inserted into the anchor bolt reserved holes, and are fastened by bolts to fit the UHPC prefabricated board to the outer surface of the small box girder; the advantages of the present invention are that a shear-resistant reinforcement method for a small box girder by enlarging the cross section method and the excellent performance of UHPC materials are combined, and from the perspective of assembly, the newly thickened UHPC prefabricated board is prefabricated in a factory and steam-cured at high temperature, which avoids on-site pouring and curing of concrete, and can fully guarantee the performance of the UHPC material; and there is no problem of later durability after reinforcement, and maintenance-free after reinforcement can be achieved.

A construction method for an assembly tool type truss composite plate includes sequentially manufacturing a shear steel support bracket, a support pole, a truss support beam, and a bottom plate; connecting and assembling the shear steel support bracket, the support pole, and the truss support beam; laying the truss support beam assembly on the longitudinal and transverse steel bars; pouring the prestressed composite plate concrete; installing the prestressed composite plate; pouring the second layer of composite concrete; and disassembling the truss support beam. The assembly tool type truss composite plate also includes a shear steel support bracket, a support pole, a truss support beam, and a bottom plate; the bottom of the shear steel support bracket of the assembly tool type truss composite plate has a bottom plate, and longitudinal and transverse bottom bars are arranged on the bottom plate. The bottom bars in the long side direction are prestressed bars, and the short side direction is non-prestressed bars. The shear steel support bracket is connected to the longitudinal and transverse bottom bars by binding.

The invention belongs to the technical field of wind power generation foundations, and provides a load-increasing and capacity-expanding foundation reinforcing method for a prestressed fan and a foundation structure. Pre-stressed anchor cables are arranged on the outer ring of the existing foundation, and U-shaped shear reinforcements are arranged on the existing foundation and connected with pre-stressed steel strands; a channel steel coupling beam is arranged on the newly-poured concrete reinforcing layer; the pre-stressed anchor cables and the pre-stressed steel strands penetrate through the concrete reinforcing layer and then are fixed to the channel steel coupling beams. An L-shaped bracket is arranged at the flange position of the channel steel coupling beam, and when prestress is applied, a jack is placed below the L-shaped bracket for jacking, so that prestress is applied to the prestress anchor cable and the prestress steel strand at the same time; the pre-stressed anchor cables and the pre-stressed steel strands only need to be lengthened, then the channel steel coupling beam is jacked to a proper position, and then a concrete reinforcing layer is newly poured, so that reinforcing transformation can be completed. Extra measures are not needed, construction is simple, and the reinforcing effect is not reduced.

The application discloses a kind of box girder tension steel plate-UHPC shear reinforcement structure and construction and design method, belong to bridge engineering reinforcing technical field.The application is aimed at the problem that existing concrete box girder is easy to debond and age after steel bonding reinforcement, actively reinforcing and secondary reinforcing are carried out in combination with prestressed tension steel plate and UHPC.The structure includes concrete box girder web, oblique steel plate, L-shaped steel pressing strip, connecting plate, tension anchoring plate, tensioning piece, structural adhesive and UHPC layer.The construction method expands the steel plate after anchoring by heating, prestress is applied by shrinkage during cooling, and then structural adhesive is poured and UHPC layer is poured.The design method provides calculation formula of tension control stress, effective prestress and shear bearing capacity.The application realizes active prestressing of steel plate, overcomes the aging defect of steel bonding adhesive, improves the durability and crack resistance of the structure, and reduces the life cycle cost.

The utility model discloses a node of a prefabricated superposed beam end shear reinforcement, which relates to the technical field of constructional engineering, and comprises a superposed beam main body, two L-shaped first reinforcing ribs which are arranged upwards are arranged at the left end and the right end of the superposed beam main body, and two L-shaped fourth reinforcing ribs which are arranged upwards are arranged above the first reinforcing ribs. A plurality of L-shaped second reinforcing ribs arranged downwards are arranged below the first reinforcing ribs, a plurality of L-shaped third reinforcing ribs arranged downwards are arranged below the second reinforcing ribs, and a plurality of steel rings are welded to the surfaces of the first reinforcing ribs and the surfaces of the second reinforcing ribs. A plurality of stirrups which are arranged at equal intervals are jointly mounted outside the first reinforcing ribs and the second reinforcing ribs, and the stirrups are located between the two steel rings. By arranging a series of structures, the requirement for experience during stirrup welding is reduced, the stirrups can be welded in the joint more uniformly, and the shearing strength in the joint is distributed more uniformly.