Prefabricated shear wall connected through horizontal joints

Abstract

The utility model provides a horizontal joint connection prefabricated shear wall which comprises a prefabricated wall body, a plurality of shear grooves penetrating through the prefabricated wall body are formed in the prefabricated wall body, and steel plates are fixed to the lower groove bottoms of the shear grooves. And when the prefabricated wall bodies arranged up and down are connected, the connecting steel bars of the lower prefabricated wall body pass through the through mounting holes of the upper prefabricated wall body and the connecting mounting holes of the steel plates and then are locked and fixed with the upper prefabricated wall body through nuts and gaskets. The connecting structure is simple and reasonable in structural design, the upper shear wall and the lower shear wall are connected through the connecting steel bars matched with the nut gaskets, the steel plates are further designed at the bolt and nut locking positions for positioning, tension and compression stress can be effectively transmitted through the steel plates, insertion space is provided for bolt connection, and the stress performance of the connecting structure of the shear walls is effectively balanced and stabilized; damage to the wall caused by stress is avoided, and endurance and stability of the joint are improved.

Description

Technical Field

[0001] This utility model relates to the field of architectural design, particularly the field of precast wall technology, and more particularly to a precast shear wall with horizontal joint connection. Background Technology

[0002] Shear walls are an indispensable structural component in high-rise buildings and buildings in earthquake zones. They are walls used to withstand horizontal and vertical loads caused by wind loads or earthquakes, preventing structural damage under shear forces and ensuring the stability and safety of buildings.

[0003] In existing reinforced concrete shear walls, grouting sleeve connections are commonly used for vertical member connections. Grouting sleeve connections require sophisticated construction techniques and are extremely difficult to inspect for quality. They necessitate precise control over the positioning of the reinforcing bars and the injection volume of grout, making the operation challenging. Improper operation can lead to problems such as incomplete grouting and insufficient connection strength. The implementation of grouting sleeve connection technology relies on specialized equipment and skilled personnel. Without adequate technical support and training, it is difficult to guarantee construction quality. During construction, issues such as cumbersome positioning during connection, difficulty in quality inspection, relatively high costs, and difficulty in effectively transferring tensile stress between the upper and lower reinforcing bars also exist.

[0004] While conventional precast walls allow for the prefabrication of shear wall components, such as concrete wall panels and steel plates, in a factory before construction, followed by on-site assembly and installation, this method offers greater assurance of component quality stability and reduces on-site quality control difficulties and safety risks compared to on-site grouting and sleeve construction. However, existing precast walls still have shortcomings in the vertical component connections of corresponding shear walls. They cannot meet the requirements of vertical loads. Furthermore, when using ordinary nuts and reinforcing bars for connection, existing precast walls can experience excessive localized stress at the connection points, potentially leading to poor joint stability and durability.

[0005] Therefore, it is necessary to design a new type of precast shear wall to address the problems existing in the preparation of reinforced concrete shear walls and precast walls using existing grouting sleeves. Utility Model Content

[0006] The technical problem to be solved by this utility model is: in order to overcome the shortcomings of the existing technology, this utility model provides a prefabricated shear wall with horizontal joint connection. Based on the design of the shear wall, the vertical connection between the upper and lower shear walls is made by horizontal joint connection through steel plates and bolts, which can simplify the construction process, reduce costs, and realize mass production.

[0007] The technical solution adopted by this utility model to solve its technical problem is as follows: a precast shear wall with horizontal joint connection, including a precast wall body, wherein a plurality of shear grooves penetrating the precast wall body are spaced apart at the same height along the horizontal direction, and a steel plate is fixed on the bottom of the lower groove of the shear groove; for each shear groove on the precast wall body, a vertical fixing installation hole is opened at the top of the upper groove along the height direction, and a vertical connection installation hole is opened at the bottom of the lower groove; a vertical fixing steel bar extending downward from the top of the upper groove is pre-embedded in the vertical fixing installation hole, and the vertical fixing... The protruding end of the reinforcing bar abuts against and is fixed to the steel plate; the steel plate is provided with connection and installation holes; the bottom of the shear groove is provided with a through-hole corresponding to the connection and installation hole, extending from the bottom of the groove to the lower end face of the precast wall body; the upper end face of the precast wall body is provided with a connecting reinforcing bar for each shear groove; the connecting reinforcing bar extends out of the upper end face of the precast wall body; when the upper and lower precast wall bodies are connected, the connecting reinforcing bar of the lower precast wall body is locked and fixed to the upper precast wall body by nuts and washers after passing through the through-hole of the upper precast wall body and the connection and installation hole of the steel plate.

[0008] In the above scheme, shear grooves are separately opened in the precast wall. Vertical fixing bars are used to position and fix the steel plate to the shear groove, and connecting bars, nuts, and washers are used to connect and fix the upper and lower precast wall bodies. The steel plate efficiently transfers tensile stress, requiring only bolt connections and cement mortar filling during construction, eliminating the need for other complex operations, effectively simplifying the construction process and reducing costs. At the same time, the steel plate connection further improves the wall's endurance and stability at stress-bearing nodes.

[0009] Furthermore, the shear grooves on the precast wall body are evenly distributed in the horizontal direction. The evenly spaced shear grooves can further and more effectively transfer tensile stress in the horizontal direction.

[0010] Furthermore, the steel plates on adjacent shear grooves of the same precast wall body are staggered on the horizontal plane. This staggered distribution of the steel plates on adjacent shear grooves of the same precast wall body can further balance the forces within the precast wall body and improve the stability of the wall.

[0011] Furthermore, the steel plates of two adjacent shear grooves on the same precast wall body are symmetrically arranged with the centerline of the shear groove thickness as the symmetry line.

[0012] Furthermore, to enhance the strength of the precast wall body, non-connecting reinforcing bars are pre-embedded on the sides of the steel plates corresponding to each shear groove in the precast wall body. The use of these non-connecting reinforcing bars further optimizes the transmission and dispersion of forces within the precast wall body, thereby improving its strength and load-bearing capacity.

[0013] The beneficial effects of this utility model are that the precast shear wall with horizontal joint connection provided by this utility model has a simple and reasonable structural design. The upper and lower shear walls are connected by connecting steel bars and nuts and washers. A steel plate is designed for positioning at the bolt and nut locking position. The steel plate can effectively transfer tensile and compressive stress, not only providing insertion space for bolt connection, but also effectively balancing and stabilizing the stress performance of the shear wall connection structure, avoiding stress damage to the wall, and improving the endurance and stability of the joint. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] Figure 1 This is a perspective view of the connection between the upper and lower shear walls in this utility model.

[0016] Figure 2 This is the front view of the connection between the upper and lower shear walls in this utility model.

[0017] Figure 3 This is a partial view of the shear wall in this utility model when it is used as the upper shear wall.

[0018] Figure 4 This is a partial view of the shear wall in this utility model when it is used as the lower shear wall.

[0019] In the diagram: 1. Precast wall body; 2. Shear groove; 3. Steel plate; 4. Vertical fixed reinforcement; 5. Non-connecting reinforcement; 6. Connecting reinforcement; 7. Nut; 8. Washer; 9. Upper shear wall; 10. Lower shear wall. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention. Therefore, they only show the components relevant to the present invention. Orientations and references (e.g., up, down, left, right, etc.) are only used to aid in the description of the features in the drawings. Therefore, the following specific embodiments are not intended to be restrictive, and the scope of the claimed subject matter is defined solely by the appended claims and their equivalents.

[0021] Example 1:

[0022] like Figures 1 to 4 The precast shear wall with horizontal joint connection shown is an embodiment of this utility model. The precast shear wall includes a precast wall body 1. Five shear grooves 2 are equally spaced horizontally at the same height on the precast wall body 1, penetrating the precast wall body 1.

[0023] Along the height direction of the precast wall body 1, i.e., the vertical direction in the attached diagram, a vertical fixing installation hole is provided at the top of the upper groove of the shear groove 2, and a vertical connection installation hole is provided at the bottom of the lower groove of the shear groove 2. A vertical fixing steel bar 4 extending downward from the top of the upper groove is pre-embedded in the vertical fixing installation hole. The protruding end of the vertical fixing steel bar 4 abuts against and is welded to the steel plate 3, thereby fixing the steel plate 3 downward to the bottom of the lower groove of the shear groove 2 through the vertical fixing steel bar 4.

[0024] Each steel plate 3 has a connection mounting hole. Corresponding to the connection mounting hole, the bottom of the shear groove 2 has a through mounting hole extending from the bottom of the groove to the lower end face of the precast wall body 1. A connecting reinforcing bar 6 is pre-embedded on the upper end face of the precast wall body 1 for each shear groove 2, extending beyond the upper end face of the precast wall body 1. The outer surface of the connecting reinforcing bar 6 has external threads, forming a bolt structure compatible with the nut 7. When connecting the upper and lower precast wall bodies 1, the connecting reinforcing bar 6 of the lower precast wall body 1 is locked and fixed to the upper precast wall body 1 through the through mounting hole of the upper precast wall body 1 and the connection mounting hole of the steel plate 3, using the nut 7 and washer 8.

[0025] During installation, the connecting steel bar 6 located in the lower shear wall is aligned with the through-hole in the upper shear wall. After passing through the through-hole and the connecting hole in the steel plate 3, the connecting steel bar 6 extends out from the shear groove 2 in the upper shear wall. A rubber gasket 8 is placed in the corresponding hole of the connecting hole in the steel plate 3, and then the connecting steel bar 6 is fixed with bolts. Finally, cement mortar is filled into the shear groove 2. After the cement mortar solidifies, the horizontal joint connection process of the shear wall in the upper and lower connection process is completed. In this connection process, the steel plate 3 is firmly attached to the vertical fixing steel bar 4 through welding. It is carefully pre-embedded in the shear groove 2 of the upper shear wall in the early stage of construction. The accuracy of its position is directly related to the stress performance of the entire connection structure. The steel plate 3 is specially reserved with through-holes. The size and position of these holes are designed according to the connecting steel bar 6 of the lower shear wall. The purpose is to provide a just right insertion space for the connecting steel bar 6, so as to realize the initial connection of the upper and lower shear wall steel bars.

[0026] After the connecting steel bars 6 of the upper and lower shear walls are initially connected through the holes in the steel plate 3, washers 8 and nuts 7 are used to secure them. The function of washers 8 is to increase the contact area between nuts 7 and connecting steel bars 6 and steel plates 3, and to distribute the pressure generated when nuts 7 are tightened, thereby preventing damage to the surface of the steel bars due to excessive local stress and ensuring the tightness and durability of the connection joint. Nuts 7, through the rotation of the threads, tightly fix the connecting steel bars 6 of the upper and lower shear walls and the intermediate steel plate 3 together, forming a stable connection that can withstand various loads generated by the building structure during use.

[0027] In actual selection and design, steel plate 3 can be designed into different shapes and sizes according to actual engineering needs. Its main function is to enhance the rigidity and strength of the steel bar connection node, effectively prevent the steel bar from loosening or slipping during the stress process, and further improve the reliability of the vertical connection of the shear wall.

[0028] After completing all the above connection steps, the connection area is finally filled with cement mortar. Cement mortar filling not only fills the gaps in the connection area, making it a whole, but also protects the internal steel bars and steel plates 3 from external environmental factors such as moisture and oxygen, thereby extending the service life of the entire connection structure and ensuring the safety and stability of the building structure during long-term use.

[0029] Example 2:

[0030] like Figures 1 to 4 The precast shear wall with horizontal joint connection shown is a second embodiment of this utility model.

[0031] Example 2, based on Example 1, further designs the position of the steel plate 3 on the shear groove 2 of the same precast wall body 1.

[0032] Specifically, the steel plates 3 of two adjacent shear grooves 2 on the same precast wall body 1 are symmetrically arranged with the centerline of the thickness of the shear groove 2 as the line of symmetry, that is, staggered along the front-back direction of the precast wall body 1 in the figure. Correspondingly, the positions of the vertical fixing holes and through holes of the steel plate 3 of each shear groove 2 are also adjusted accordingly, forming a staggered distribution of the main connection nodes, namely steel plates 3, connecting steel bars 6, and vertical fixing steel bars 4, within the left and right adjacent shear grooves 2. This further adjusts and distributes the force balance at the connection node positions, further improving the stability of the precast wall when connected vertically.

[0033] Example 3:

[0034] like Figures 1 to 4 The precast shear wall with horizontal joint connection shown is Embodiment 3 of this utility model.

[0035] In Example 3, based on Example 2, non-connecting steel bars 5 are pre-embedded in the precast wall body 1 to further improve the strength and load-bearing capacity of the precast wall body 1.

[0036] Specifically, non-connecting reinforcing bars 5 are pre-embedded on the side of the steel plate 3 corresponding to each shear groove 2 of the precast wall body 1. The setting of non-connecting reinforcing bars 5 further facilitates the rational transmission and dispersion of the force inside the precast wall body 1, which is conducive to improving the strength and load-bearing capacity of the precast wall body 1.

[0037] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A horizontally jointed connected precast shear wall, characterized by: The prefabricated wall body is provided with a plurality of shear slots penetrating the prefabricated wall body and arranged at the same height and spaced apart in the horizontal direction. The prefabricated wall body is provided with a vertical fixed mounting hole at the top of each shear slot and a vertical connecting mounting hole at the bottom of each shear slot. The steel plate is provided with a connecting mounting hole. The bottom of each shear slot is provided with a through mounting hole penetrating the bottom to the upper end surface of the prefabricated wall body.

2. A horizontally jointed connected precast shear wall according to claim 1, wherein: The upper end surface of the prefabricated wall body is provided with a connecting steel bar corresponding to each shear slot.

3. A horizontally jointed connected precast shear wall according to claim 2, wherein: The connecting steel bar of the lower prefabricated wall body is locked and fixed to the upper prefabricated wall body through the through mounting hole of the upper prefabricated wall body, the connecting mounting hole of the steel plate and the nut and gasket.

4. A horizontally jointed connected precast shear wall according to claim 3, wherein: The shear slots are filled with cement mortar.

5. A horizontally-seamed connected precast shear wall as defined in claim 3, wherein: The shear slots are equally spaced in the horizontal direction. The steel plates of the adjacent two shear slots on the same prefabricated wall body are staggered in the horizontal plane. The steel plates of the adjacent two shear slots on the same prefabricated wall body are symmetrically arranged with the midline of the shear slot thickness as the symmetry line. The prefabricated wall body is provided with a non-connecting steel bar corresponding to the side of the steel plate of each shear slot.

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