A composite shear wall with built-in steel plate

Abstract

This utility model relates to the field of building (structure) main engineering. More specifically, this utility model relates to a composite shear wall with an embedded steel plate. To reduce the risk of cracking in the early stages of construction, this utility model features a strip-shaped hole in the center of the embedded steel plate. The concrete on both sides of the embedded steel plate is connected through this hole, allowing the embedded steel plate and concrete to form a dowel structure. This structure can replace some of the studs as shear keys to resist slippage between the embedded steel plate and the concrete surface, enabling the embedded steel plate and concrete to work together effectively and reducing the risk of early-stage cracking.

Description

Technical Field

[0001] This utility model relates to the field of building (structure) main engineering. More specifically, this utility model relates to a composite shear wall with built-in steel plate. Background Technology

[0002] Built-in steel plate concrete composite shear walls consist of built-in steel plates and reinforced concrete shear walls connected by studs. As a crucial lateral resistance component in super high-rise buildings and buildings in high-intensity seismic zones, they possess excellent seismic performance and superior deformation characteristics. They offer advantages such as high load-bearing capacity, high lateral stiffness, good ductility, small component size, and low structural space occupancy, making them widely used in super high-rise buildings and buildings in high-intensity seismic zones. Compared to ordinary concrete shear wall structures, built-in steel plate concrete composite shear walls can reduce the cross-sectional dimensions of components and the self-weight of the structure, reducing seismic forces and increasing usable space. Compared to steel structures, they offer advantages such as lower steel consumption, higher structural stiffness, better fire resistance, and better durability. Therefore, built-in steel plate concrete shear walls are increasingly used in super high-rise buildings and buildings in high-intensity seismic zones.

[0003] In reinforced concrete shear walls with embedded steel plates, the steel plate and concrete are two different materials (different material parameters such as elastic modulus, Poisson's ratio, and coefficient of linear expansion). Engineering practice shows that the difference in the coefficient of linear expansion between steel and concrete, temperature stress, and shrinkage stress are the main factors leading to early-stage cracking and reduced structural durability in reinforced concrete shear walls with embedded steel plates. Therefore, it is essential to explore methods for crack control in the early stages of construction of reinforced concrete shear walls with embedded steel plates.

[0004] Due to factors such as high concrete design strength, high hydration heat, rapid temperature rise, large shrinkage deformation (including plastic shrinkage before hardening, autogenous shrinkage during hardening, temperature drop shrinkage, drying shrinkage, and carbonation shrinkage), and difficult curing, reinforced concrete shear wall structures face a significant risk of cracking in high-rise buildings and buildings in high-intensity seismic zones. While the underlying principles of cracking in reinforced concrete shear walls are similar to, but not entirely the same as, those in reinforced concrete shear walls primarily involve the coordination of contact deformation between the steel plate and concrete components. The probability and severity of such cracking are high, seriously affecting the overall integrity, durability, stability, and load-bearing capacity of the project. Therefore, it is necessary to study the causes of cracking, find effective crack prevention measures, and jointly overcome this problem that plagues the construction industry.

[0005] Currently, to control early-stage cracking in reinforced concrete shear walls with built-in steel plates, the following measures are commonly adopted: 1) using low-heat cement; 2) installing studs at appropriate intervals; 3) configuring temperature-controlled reinforcement in the shear wall surface layer; 4) setting appropriate steel plate thickness; 5) strengthening curing and moisture retention; and 6) for thicker shear walls, strengthening internal and external temperature difference monitoring and control. However, these conventional measures cannot completely eliminate early-stage cracking in thicker shear walls. Utility Model Content

[0006] The purpose of this invention is to provide a composite shear wall with built-in steel plates and concrete, thereby reducing the risk of early cracking during construction.

[0007] To achieve these objectives and other advantages according to this utility model, a built-in steel plate concrete composite shear wall is provided, comprising a built-in steel plate, a steel frame, and a concrete wall. The steel plate is disposed within the steel frame and embedded in the concrete wall together with the steel frame. The built-in steel plate is connected to the concrete wall by studs. A vertically formed strip-shaped hole is provided on the built-in steel plate to allow communication between the concrete on both sides of the steel plate. Furthermore, in the aforementioned built-in steel plate concrete composite shear wall, the strip-shaped hole is located in the middle of the wall.

[0008] Furthermore, in the aforementioned composite shear wall with built-in steel plate and concrete, two reinforcing ribs are vertically provided on both sides of the built-in steel plate, and the two reinforcing ribs on the same side are respectively located on both sides of the strip hole.

[0009] Furthermore, in the aforementioned composite shear wall with built-in steel plate and concrete, the length of the reinforcing rib is greater than the length of the strip hole.

[0010] Furthermore, in the aforementioned composite shear wall with built-in steel plate and concrete, the upper end of the reinforcing rib extends 50mm above the upper end of the strip hole, and its lower end extends 50mm below the lower end of the strip hole.

[0011] Furthermore, in the aforementioned composite shear wall with built-in steel plate and concrete, the width of the strip hole is 50mm.

[0012] Furthermore, in the aforementioned composite shear wall with built-in steel plate and concrete, the horizontal distance between the reinforcing rib and the strip hole is 25mm.

[0013] Furthermore, in the aforementioned composite shear wall with built-in steel plate, the distance between the upper end of the strip hole and the upper end of the built-in steel plate is 500mm, and the distance between its lower end and the lower end of the built-in steel plate is 500mm.

[0014] This utility model also provides a composite shear wall with an embedded steel plate and concrete, including the aforementioned embedded steel plate, steel frame and concrete wall. The steel plate is disposed in the steel frame and is embedded in the concrete wall together with the steel frame. The embedded steel plate and the concrete wall are connected by studs.

[0015] Furthermore, in the aforementioned built-in steel plate concrete composite shear wall, the steel frame includes an upper steel beam, a lower steel beam, and two steel columns, which are welded together to form a square frame.

[0016] The beneficial effects of this utility model are:

[0017] To reduce the risk of cracking in early-stage concrete composite shear walls with built-in steel plates, this invention involves creating a strip-shaped hole in the middle of the wall. The concrete on both sides of the built-in steel plate is connected through this hole, allowing the built-in steel plate and concrete to form a pin structure. This pin structure can replace some of the studs as shear keys to resist slippage between the built-in steel plate and the concrete surface, enabling the built-in steel plate and concrete to work together effectively and reducing the risk of early-stage cracking.

[0018] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0019] Figure 1 This is a schematic diagram showing the connection between the built-in steel plate and the steel frame described in this utility model;

[0020] Figure 2 for Figure 1 View at point AA;

[0021] Figure 3 This is a structural schematic diagram of the built-in steel plate concrete composite shear wall described in this utility model.

[0022] The reference numerals in the attached figures are as follows:

[0023] 1. Built-in steel plate; 2. Strip hole; 3. Reinforcing rib; 4. Upper steel beam; 5. Lower steel beam; 6. Steel column; 7. Concrete wall; 8. Stud. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the embodiments of this application, so that those skilled in the art can implement them based on the description. Obviously, the described embodiments are some embodiments of this application, but not all embodiments.

[0025] Unless otherwise specified, the experimental methods described in the following embodiments are conventional methods, and the reagents and materials described are commercially available unless otherwise specified. In the description of this invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0026] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0027] First, a brief introduction to the design concept of the embodiments of this application will be given.

[0028] In order to reduce the risk of cracking in the early stage of construction of the reinforced concrete shear wall with built-in steel plate, this utility model provides a strip hole 2 in the middle of the built-in steel plate 1. The concrete on both sides of the built-in steel plate 1 is connected through the strip hole 2, so that the built-in steel plate 1 and the concrete together form a pin structure, which can replace some of the studs 8 as shear keys to resist the slippage between the built-in steel plate 1 and the concrete surface. This allows the built-in steel plate 1 and the concrete to work together fully and reduce the risk of cracking in the early stage of construction.

[0029] The technical solutions in the embodiments of this application will be clearly and completely described below through examples:

[0030] like Figures 1-3As shown, an embodiment of this utility model provides a composite shear wall with an internal steel plate and concrete, comprising the aforementioned internal steel plate 1, a steel frame, and a concrete wall 7. The internal steel plate 1 has a vertically formed elongated slot 2 in its center. Two reinforcing ribs 3 are vertically arranged on both sides of the internal steel plate 1, with the two reinforcing ribs 3 on the same side located on either side of the slot 2. The length of the reinforcing rib 3 is greater than the length of the slot 2. The upper end of the reinforcing rib 3 extends 50mm above the upper end of the slot 2, and its lower end extends 50mm below the lower end of the slot 2. The width of the slot 2 is 50mm. The horizontal distance between the reinforcing rib 3 and the slot 2 is 25mm. The distance between the upper end of the slot 2 and the upper end of the internal steel plate 1 is 500mm, and the distance between the lower end of the slot 2 and the lower end of the internal steel plate 1 is 500mm. The steel plate is set inside the steel frame and is embedded in the concrete wall 7 together with the steel frame. The built-in steel plate 1 is connected to the concrete wall 7 by studs 8.

[0031] In this embodiment, a strip-shaped hole 2 is formed in the middle of the built-in steel plate 1, and the concrete on both sides is opened through the strip-shaped hole 2. The built-in steel plate 1 and the concrete together form a dowel effect, which can replace part of the steel plate studs 8 as a shear key to resist slippage between the steel and concrete surfaces, so that the steel and concrete can work together fully. The upper end of the reinforcing rib 3 is 50mm higher than the upper end of the strip-shaped hole 2, and the lower end is 50mm lower than the lower end of the strip-shaped hole 2. This arrangement can better strengthen the structure around the strip-shaped hole 2, so that the stress can be transferred more evenly to the entire built-in steel plate 1. The horizontal distance between the reinforcing rib 3 and the strip-shaped hole 2 is 25mm. This distance can ensure that the reinforcing rib 3 can effectively play its reinforcing role, while avoiding being too close to the strip-shaped hole 2 and affecting the structural performance of the strip-shaped hole 2. The connection between the reinforcing rib 3 and the steel plate body is usually welded. Welding can ensure that the connection between the two is strong and reliable, so that they can jointly bear various loads in the building structure.

[0032] Compared to the existing structure, this embodiment has the following main improvements:

[0033] This technology makes the following improvements to conventional reinforcement methods:

[0034] 1. An elongated hole is made in the middle of the built-in steel plate 1, and the concrete on both sides is opened to allow the steel and concrete to work together fully.

[0035] 2. An elongated hole is made in the middle of the inner steel plate 1 to reduce the expansion effect of the steel plate during the heating process;

[0036] 3. By setting up perforated stiffening plates to replace some of the studs 8, the connection between steel and concrete is strengthened, and the stress performance of the component is better.

[0037] The embedded steel plate concrete composite shear wall structure in this embodiment is simple, allowing the steel and concrete to work together effectively, further reducing the risk of early-stage cracking. In actual engineering applications, it has shown good results in 500mm and 600mm thick embedded steel plate concrete shear walls, with no cracking observed.

[0038] Preferably, in the aforementioned built-in steel plate concrete composite shear wall, the steel frame includes an upper steel beam 4, a lower steel beam 5, and two steel columns 6, which are welded together to form a square frame.

[0039] In this embodiment,

[0040] The steel frame comprises upper steel beams 4, lower steel beams 5, and two steel columns 6, which are welded together to form a square frame. The steel beams and columns 6 are typically made of hot-rolled steel sections, such as I-beams and channel steel, which possess high strength and stiffness. The welded square frame provides a stable support structure for the internal steel plate 1, effectively transferring loads to the entire composite shear wall structure.

[0041] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and embodiments shown and described herein.

Claims

1. A composite shear wall with built-in steel plate and concrete, characterized in that, It includes an internal steel plate, a steel frame, and a concrete wall. The steel plate is set inside the steel frame and is embedded in the concrete wall together with the steel frame. The internal steel plate is connected to the concrete wall by studs. The internal steel plate has vertical slots to allow the concrete on both sides of the steel plate to be connected.

2. The composite shear wall with built-in steel plate as described in claim 1, characterized in that, The strip-shaped hole is located in the middle of the built-in steel plate.

3. A composite shear wall with built-in steel plate as described in claim 2, characterized in that, Two reinforcing ribs are vertically arranged on both sides of the built-in steel plate, with the two reinforcing ribs on the same side located on both sides of the strip hole.

4. A composite shear wall with built-in steel plate as described in claim 3, characterized in that, The length of the reinforcing rib is greater than the length of the strip hole.

5. A composite shear wall with built-in steel plate as described in claim 4, characterized in that, The upper end of the reinforcing rib extends 50mm above the upper end of the strip hole, and the lower end extends 50mm below the lower end of the strip hole.

6. A composite shear wall with built-in steel plate as described in claim 3, characterized in that, The width of the strip hole is 50mm.

7. A composite shear wall with built-in steel plate as described in claim 6, characterized in that, The horizontal distance between the reinforcing rib and the strip hole is 25mm.

8. A composite shear wall with built-in steel plate as described in claim 3, characterized in that, The distance between the upper end of the strip hole and the upper end of the inner steel plate is 500mm, and the distance between its lower end and the lower end of the inner steel plate is 500mm.

9. A composite shear wall with built-in steel plate as described in claim 8, characterized in that, The steel frame includes an upper steel beam, a lower steel beam, and two steel columns, which are welded together to form a square frame.

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