A design method of corrugated steel plate shear wall and corrugated steel plate shear wall
By systematically designing the parameter combination of corrugated steel plate shear walls, including a 45-degree corrugation angle and a specific height-to-width ratio, the problem of large steel consumption in electronics factories was solved, achieving high-efficiency load-bearing capacity and improved construction quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA ELECTRONICS SYST ENG NO 2 CONSTR
- Filing Date
- 2023-08-18
- Publication Date
- 2026-07-28
AI Technical Summary
In existing technologies, the structural strength requirements of corrugated steel plate shear walls in electronic factories are high, but the existing parameter designs have not been systematically studied, resulting in increased steel consumption and affecting construction efficiency and quality.
A design method for corrugated steel plate shear walls is adopted. By calculating parameters such as the width of the corrugated steel plate shear wall, concrete strength, width of the square steel tube, and corrugation height, an optimal combination is formed, including a 45-degree corrugation angle and a specific height-to-width ratio. Combined with tie bolt connections and concrete pouring, a corrugated steel plate shear wall skeleton is formed.
It improves the load-bearing capacity of corrugated steel plate shear walls, reduces steel consumption, improves construction efficiency and quality, achieves the best concrete restraint effect, and significantly enhances load-bearing capacity.
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Figure CN117332471B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of building wall technology, specifically to a design method for corrugated steel plate shear walls and a corrugated steel plate shear wall. Background Technology
[0002] Shear walls, also known as wind-resistant walls, earthquake-resistant walls, or structural walls, are walls in buildings or structures that primarily bear horizontal and vertical loads caused by wind or earthquakes. Current steel plate shear walls mainly consist of concrete wall panels and flat steel plates embedded within the concrete wall panels. Compared to concrete shear walls, using flat steel plates helps to improve the vertical bearing capacity of steel plate shear walls.
[0003] However, in electronics factories, due to the higher floor height, the structural strength requirements for shear walls are higher. Steel plate shear walls require more steel to achieve the same vertical bearing capacity and lateral resistance as corrugated steel plate shear walls.
[0004] Corrugated steel plate shear walls generally consist of steel pipes on both sides and a corrugated plate in the middle. The corrugated plate has high lateral stiffness, and the multi-cavity structure formed by welding it with the square steel pipes can provide more effective restraint on the concrete, preventing premature buckling and fully utilizing the material properties. It can also serve as formwork during construction, reducing the construction period and effectively improving construction efficiency and quality. However, currently, the various parameters of corrugated steel plate shear walls are determined only based on experience or corresponding equipment models. The influence of many parameters on the bearing capacity of corrugated steel plate shear walls has not been systematically studied, and no optimal combination has been proposed. Summary of the Invention
[0005] To address the problem of how to provide a high-performance corrugated steel plate shear wall, this invention provides a design method for corrugated steel plate shear walls. By adopting this method, the load-bearing performance of the corrugated steel plate shear wall can be optimized. Furthermore, this invention provides a corrugated steel plate shear wall designed using this method.
[0006] The technical solution is as follows: a design method for a corrugated steel plate shear wall, comprising square steel tubes on both sides, with two corrugated steel plates connected between the square steel tubes, the corrugated steel plates being connected by tie bolts, and concrete being poured between the square steel tubes and the corrugated steel plates. The method is characterized by: first obtaining the width B of the corrugated steel plate shear wall (in mm) and the standard value f of the concrete cube compressive strength. cu,k Unit: MPa
[0007] The height H of the corrugated steel plate shear wall is calculated using the formula H=4B, in mm.
[0008] According to the formula The width b1 of the square steel tube is calculated, in mm.
[0009] According to the formula The height h of the corrugated steel plate was calculated. r The unit is mm;
[0010] The corrugation angle θ of the corrugated steel plate r It is 45 degrees.
[0011] Its further features are:
[0012] The calculated width b1 of the square steel tube is rounded to the nearest integer.
[0013] The calculated height h of the corrugated steel plate r Rounding is performed using the rounding method;
[0014] The width B of the corrugated steel plate shear wall is 820-1640mm;
[0015] The standard value of the compressive strength f of the concrete cube cu,k It is 30-60 MPa.
[0016] A corrugated steel plate shear wall, characterized in that: it is designed and constructed using the aforementioned design method for corrugated steel plate shear walls; the width B of the corrugated steel plate shear wall obtained during the design process is 1230mm; and the standard value f of the concrete cube compressive strength is obtained. cu,k The strength is 40 MPa; the height H of the corrugated steel plate shear wall after construction is 4920 mm, the width b1 of the square steel tube is 75 mm, and the height h of the corrugation of the corrugated steel plate is... r 20mm, corrugated steel plate with a corrugation angle θ r It is 45 degrees.
[0017] Beneficial effects: 1. When the corrugated steel plate is 45° wavy, the corrugated steel plate has the best restraining effect on the concrete, which improves the load-bearing capacity and makes it less likely to detach.
[0018] 2. When the height-to-width ratio of the corrugated steel plate shear wall is H=4B, the concrete is best constrained by the corrugated steel plate.
[0019] III. When the ratio of the width of the square steel pipe to the width of the shear wall in a corrugated steel plate shear wall is... When the concrete is subjected to the best restraint effect by the corrugated steel plate, the concrete is most effectively restrained.
[0020] IV. When the corrugation height of the corrugated steel plate, the width of the square steel pipe, and the concrete strength grade are in harmony... When the relationship is such that the concrete is best constrained by the corrugated steel plate, the concrete will be most effectively restrained.
[0021] 5. When the width B of the corrugated steel plate shear wall is 1230mm, the standard value of the concrete cube compressive strength f is obtained.cu,k When the pressure is 40MPa, the corrugated steel plate shear wall obtained using the above parameters achieves the peak restraint effect. Attached Figure Description
[0022] Figure 1 A partial top view of a corrugated steel plate shear wall;
[0023] Figure 2 This is a schematic diagram of the front view of a corrugated steel plate shear wall.
[0024] Figure 3 This is a schematic diagram of a three-dimensional corrugated steel plate shear wall structure. Detailed Implementation
[0025] A design method for corrugated steel plate shear walls, combined with Figures 1-3 As shown, the corrugated steel plate shear wall includes square steel pipes 2 on both sides. Two corrugated steel plates 1 are connected to the square steel pipes 2 by welded connecting plates 3. The corrugated steel plates 1 are connected by tie bolts 4. Concrete 5 is poured between the square steel pipes 2 and the corrugated steel plates 1. When designing the corrugated steel plate shear wall, the width B (820-1640mm) of the corrugated steel plate shear wall is first obtained (unit: mm), and the standard value of the concrete cube compressive strength f is also obtained. cu,k (30-60MPa), unit MPa,
[0026] The height H of the corrugated steel plate shear wall is calculated using the formula H=4B, in mm.
[0027] According to the formula The width b1 of the square steel tube is calculated, in mm.
[0028] According to the formula The height h of the corrugated steel plate was calculated. r The unit is mm;
[0029] The corrugation angle θ of the corrugated steel plate r It is 45 degrees.
[0030] The above calculation results can be rounded to the nearest integer.
[0031] When constructing the corrugated steel plate shear wall designed above, the specific steps can be as follows: (1) Roll the steel plate into corrugated steel plate 1 and drill the connection holes; (2) Roll the steel plate into shape, weld it and form a square steel pipe 2; (3) Weld the connecting plate 3 onto the square steel pipe 2; (4) Connect the corrugated steel plate 1 to the connecting plate 3 through the connection holes, and connect the two corrugated steel plates with tie bolts 4 through the connection holes to form a square steel pipe-corrugated steel plate shear wall skeleton; (5) Pour concrete 5 into the square steel pipe-corrugated steel plate shear wall skeleton to form a corrugated steel plate shear wall.
[0032] The corrugated steel plate shear wall designed above can be quickly assessed using the following formula to determine the restraining effect of the corrugated steel plate on the concrete:
[0033]
[0034] The coefficient α1 for improving the bearing capacity of concrete within the corrugated steel plate cavity can be calculated. A higher value indicates a better restraining effect of the corrugated steel plate on the concrete, and consequently, better bearing capacity of the corrugated steel plate shear wall.
[0035] N uc The bearing capacity of the concrete inside the cavity enclosed by the corrugated steel plate and square steel tube can be simulated using Abaqus software after obtaining the parameters of the corrugated steel plate shear wall, and the unit is kN.
[0036] W c The area of the concrete inside the cavity enclosed by the corrugated steel plate and square steel pipe is expressed in mm. 2 The calculation formula is as follows:
[0037] ;
[0038] The int function is the integer function.
[0039] The constraint effect of this solution is demonstrated below with reference to specific examples:
[0040] Example 1: Taking Q235 steel as the corrugated steel plate and square steel pipe as an example, the steel pipe wall thickness is 3mm, the concrete in the corrugated steel plate shear wall is C40 concrete, the width of the square steel pipe is 75mm, the corrugation angle of the corrugated steel plate is 45°, and the corrugation height is 20mm.
[0041] In this embodiment, when the corrugated steel plate shear wall reaches its ultimate bearing capacity, the bearing capacity N of the concrete inside the cavity enclosed by the corrugated steel plate and the square steel tube is... uc The bearing capacity is 1679 kN, and the coefficient of improvement α1 for the concrete bearing capacity inside the corrugated steel plate cavity is 1.072.
[0042] Example 2-25:
[0043] Examples 2-25 only changed the corrugation angle of the corrugated steel plate, which ranged from 5° to 85°; all other data were the same as in Example 1. Specific results for Examples 1-25 are shown in Table 1 below.
[0044] Table 1
[0045]
[0046] As shown in the table above, the coefficient α1 for improving the bearing capacity of concrete in the corrugated steel plate cavity increases with the increase of the corrugation angle, and reaches its maximum value when the corrugation angle is equal to 45 degrees, and then decreases. This proves that when the corrugated steel plate is corrugated at 45 degrees, the corrugated steel plate has the best restraining effect on the concrete and reaches its peak value. Combined with the following examples 56 (Table 4) and 111-120 (Table 8), it is proved that when the obtained parameters are changed, 45 degrees is still the peak value.
[0047] Examples 26-40:
[0048] Examples 26-40 only changed the corrugation height of the corrugated steel sheet, which was 15-30 mm; all other data were the same as in Example 1. Specific results are shown in Table 2 below.
[0049] Table 2
[0050]
[0051] As shown in the table above, when the width B of the corrugated steel plate shear wall is 1230mm, the standard value of the concrete cube compressive strength f is obtained. cu,k At a pressure of 40 MPa, the height h of the corrugated steel plate r When the corrugated steel plate is 20mm thick, the confinement effect of the corrugated steel plate on the concrete is optimal, and α1 also reaches its peak value, which meets the above-mentioned optimal corrugated steel plate corrugation height h. r The calculation formula, combined with the following examples 51-98 (Tables 4 and 5), proves that the formula is applicable to other obtained parameters.
[0052] Examples 41-50:
[0053] Examples 41-50 only changed the width of the square steel tube, which was 50-100mm, while the other data were the same as in Example 1. The specific results are shown in Table 3 below.
[0054] Table 3
[0055]
[0056] As shown in the table above, the coefficient α1 for increasing the bearing capacity of the concrete inside the corrugated steel plate cavity increases with the increase of the width b1 of the square steel tube. It reaches its maximum value when the width b1 of the square steel tube is equal to 75 mm, that is, when the ratio of the width b1 of the square steel tube to the width B of the corrugated steel plate shear wall is 5:82, and then decreases. Combined with Examples 127-136 (Table 10) and Example 56 using other parameters, it is proved that when the ratio of the width b1 of the square steel tube to the width B of the corrugated steel plate shear wall is 5:82, the constraint effect of the corrugated steel plate on the concrete is the best and reaches its peak value.
[0057] Examples 51-98:
[0058] Examples 51-98 changed the concrete strength grade inside the corrugated steel plate and the wave height of the corrugated steel plate. The concrete strength grade was C30-C60, and the wave height was 15-30mm. The other data were the same as in Example 1. The specific results are shown in Tables 4 and 5 below.
[0059] Table 4
[0060]
[0061] Table 5
[0062]
[0063] Examples 51-98 demonstrate that when the acquired parameters change, the height h of the corrugated steel plate corrugation increases. r The optimal calculation formula can still calculate the optimal corrugated steel plate height; for example, when the concrete strength grade is C30, the calculated corrugated steel plate height h is... r Rounded down, the value is 17mm, meaning α1 obtained in Example 53 has the maximum value; when the concrete strength grade is C50, the calculated corrugation height h of the corrugated steel plate is... r Rounded down, the value is 22mm, meaning α1 obtained in Example 74 has the maximum value; when the concrete strength grade is C60, the calculated corrugation height h of the corrugated steel plate is... r The result after rounding is 24mm, which means that α1 obtained in Example 92 has the maximum value.
[0064] Examples 99-104:
[0065] In Examples 99-104, only the height of the shear wall was changed, with a height-to-width ratio of 3-6; the remaining data were the same as in Example 1. Specific results are shown in Table 6 below.
[0066] Table 6
[0067]
[0068] Examples 105-110:
[0069] In Examples 105-110, only the width of the shear wall was changed, and the height-to-width ratio was 3-6; the remaining data were the same as in Example 1. The specific results are shown in Table 7 below.
[0070] Table 7
[0071]
[0072] As can be seen from Examples 99-110 and Example 1 above, the coefficient α1 for increasing the bearing capacity of the concrete inside the corrugated steel plate cavity gradually increases with the increase of the height-to-width ratio, reaches its maximum value when the ratio is 4, and then gradually decreases. At the same time, combined with Examples 121-126 and Example 56 in Table 9, it can be proved that when the height-to-width ratio of the corrugated steel plate shear wall is H=4B, the concrete is best constrained by the corrugated steel plate and reaches its peak value.
[0073] Examples 111-120:
[0074] Examples 111-120 changed the concrete strength grade inside the corrugated steel plate to C30 and the corrugation angle (40°-50°), and the specific results are shown in Table 8 below.
[0075] Table 8
[0076]
[0077] As can be seen from Examples 111-120 and Example 56 above, the concrete is best constrained by the corrugated steel plate and reaches its peak when the corrugation angle is 45° in this data set.
[0078] Examples 121-126:
[0079] Examples 121-126 show that the concrete strength grade inside the corrugated steel plate was changed to C30 and the width of the shear wall was changed to a height-to-width ratio of 3-6. The specific results are shown in Table 9 below.
[0080] Table 9
[0081]
[0082] As can be seen from Examples 121-126 and Example 56 above, when the aspect ratio is 4, the concrete is best constrained by the corrugated steel plate and reaches its peak value.
[0083] Examples 127-136:
[0084] Examples 127-136 changed the concrete strength grade inside the corrugated steel plate to C30 and the width of the square steel tube to 50-100mm. The specific results are shown in Table 10 below.
[0085] Table 10
[0086]
[0087] As can be seen from Examples 127-136 and Example 56 above, when the ratio of the width b1 of the square steel tube to the width B of the corrugated steel plate shear wall is 5:82, the concrete is best constrained by the corrugated steel plate and reaches its peak value.
[0088] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.
Claims
1. A design method for a corrugated steel plate shear wall, the corrugated steel plate shear wall comprising square steel tubes located on both sides, two corrugated steel plates arranged opposite each other connecting the square steel tubes, the corrugated steel plates being connected by tie bolts, and concrete being poured between the square steel tubes and the corrugated steel plates, characterized in that: When designing a corrugated steel plate shear wall, first obtain the width B of the corrugated steel plate shear wall (in mm) and the standard value of the concrete cube compressive strength f. cu,k Unit: MPa The height H of the corrugated steel plate shear wall is calculated using the formula H=4B, in mm. According to the formula The width b1 of the square steel tube is calculated, in mm. According to the formula The height h of the corrugated steel plate was calculated. r The unit is mm; The corrugation angle θ of the corrugated steel plate r It is 45 degrees.
2. The design method for a corrugated steel plate shear wall according to claim 1, characterized in that: The calculated width b1 of the square steel tube is rounded to the nearest integer.
3. The design method for a corrugated steel plate shear wall according to claim 2, characterized in that: The calculated height h of the corrugated steel plate r Rounding is performed using the rounding method.
4. The design method for a corrugated steel plate shear wall according to claim 1, characterized in that: The width B of the corrugated steel plate shear wall is 820-1640mm.
5. A design method for a corrugated steel plate shear wall according to claim 1 or 4, characterized in that: The standard value of the compressive strength f of the concrete cube cu,k It is 30-60 MPa.
6. A corrugated steel plate shear wall, characterized in that: It was designed and constructed using the design method for corrugated steel plate shear walls as described in claim 1. During the design process, the width B of the corrugated steel plate shear wall was determined to be 1230 mm, and the standard value f of the concrete cube compressive strength was obtained. cu,k The strength is 40 MPa; the height H of the corrugated steel plate shear wall is 4920 mm, the width b1 of the square steel tube is 75 mm, and the height h of the corrugation of the corrugated steel plate is... r 20mm, corrugated steel plate with a corrugation angle θ r It is 45 degrees.