采用高强钢棒的混凝土短肢剪力墙抗震性能

袁维光; 赵华; 马兰; 肖强; 魏丞瑾

doi:10.3969/j.issn.0258-2724.20230376

采用高强钢棒的混凝土短肢剪力墙抗震性能

doi: 10.3969/j.issn.0258-2724.20230376

袁维光^{1, 3,},
赵华^{1, 3, ,},
马兰²,
肖强²,
魏丞瑾²

1.
成都理工大学地质灾害防治与地质环境保护国家重点实验室，四川成都 610059
2.
成都理工大学环境与土木工程学院，四川成都 610059
3.
自然资源部丘陵山地质灾害防治重点实验室，福州 350002

基金项目: 西藏自治区自然资源厅项目（藏财采20200890-1）

详细信息

作者简介:
袁维光（1986—），男，讲师，博士，研究方向结构工程抗震，E-mail：906579475@qq.com

通讯作者:
赵华（1976—），女，副教授，博士，研究方向结构工程抗震，E-mail：zhaohua@cdut.edu.cn

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出版历程
- 收稿日期: 2023-08-09
- 修回日期: 2024-01-08
- 网络出版日期: 2025-07-05

Investigation on Seismic Performance of Concrete Short-Leg Shear Wall with High-Strength Steel Bars

YUAN Weiguang^{1, 3
,},
ZHAO Hua^{1, 3
, ,},
MA Lan²,
XIAO Qiang²,
WEI Chengjin²

1.
State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, China
2.
College of Environment and Civil Engineering, Chengdu University of Technology, Chengdu 610059, China
3.
Key Laboratory of Geohazard Prevention of Hilly Mountains, Ministry of Natural Resources of China, Fuzhou 350002, China

摘要

摘要:
为满足震后建筑结构快速修复的需求，提出一种以高强钢棒（HG钢棒）作为暗柱纵筋的短肢剪力墙，即采用高强钢棒的混凝土短肢剪力墙，预制3个1/3缩尺的钢筋混凝土短肢剪力墙构件，通过拟静力试验，分析暗柱纵筋类型和轴压比对试件抗震性能及自复位能力的影响. 试验结果表明，与普通混凝土短肢剪力墙相比，在大变形时，高强钢棒-混凝土短肢剪力墙构件表现出良好的位移-硬化效应和自复位性，滞回曲线整体呈S形，极限承载力提高83%；其残余变形较小，在位移角3.0%时，残余变形为0.65%；在高轴压比（限值）作用下，高强钢棒-混凝土短肢剪力墙构件的极限承载能力提高11%，在位移角3.5%时，残余变形为0.50%.
- 高强钢棒 /
- 短肢剪力墙 /
- 轴压比 /
- 抗震性能 /
- 自复位能力
Abstract:
To meet the demand for rapid repair of building structures after earthquakes, a short-leg shear wall with high-strength steel bars (HG bars) as longitudinal reinforcement of the concealed column, namely short-leg shear wall with high-strength steel bars was proposed. Three prefabricated 1/3-scale reinforced concrete short-leg shear wall components were constructed, and quasi-static tests were conducted to analyze the effects of longitudinal reinforcement types of the concealed column and axial compression ratio on the seismic performance and self-restoring capability of the components. The test results show that compared to the ordinary concrete short-leg shear walls, the short-leg shear wall components with HG steel bars demonstrate a good displacement-hardening effect and self-restoring capability under large deformations and develop an overall S-shaped hysteresis curve and an 83% increase in the ultimate bearing capacity. While the residual deformation is relatively small, a residual deformation of 0.65% occurs at a displacement angle of 3.0%. In addition, under the high axial compression ratio (limit value), the ultimate bearing capacity of short-leg shear wall components with HG steel bars increases by 11%, and the residual deformation is 0.50% at a displacement angle of 3.5%.
- high-strength steel bar /
- short-leg shear wall /
- axial compression ratio /
- seismic performance /
- self-restoring ability

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图 1 构件尺寸及配筋

Figure 1. Component dimensions and reinforcement

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图 2 测量装置布置

Figure 2. Layout of measuring device

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图 3 加载装置

Figure 3. Loading device

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图 4 加载制度

Figure 4. Loading system

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图 5 构件最终破坏形态及裂缝

Figure 5. Final failure pattern and fracture of components

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图 6 荷载-位移角滞回曲线

Figure 6. Load–displacement hysteresis curves

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图 7 骨架曲线

Figure 7. Skeleton curves

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图 8 刚度退化曲线

Figure 8. Stiffness degradation curves

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图 9 纵筋应变

Figure 9. Longitudinal reinforcement strain

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图 10 等效黏滞阻尼系数

Figure 10. Equivalent viscous damping coefficient

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图 11 残余变形

Figure 11. Residual deformation

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图 12 相对残余变形

Figure 12. Relative residual deformation

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表 1 构件基本参数

Table 1. Basic parameters of components

试件编号	宽厚比	剪跨比	轴压比	纵筋配筋率/%	暗柱纵筋配筋率/%	横筋配筋率/%
WCP10	5	2	0.10	0.65 （6@87）	2.01 （48）	1.13 （6@50/ 100）
WUP10			0.10		2.54 （4HG9）
WUP25			0.25		2.54 （4HG9）
注：4HG9表示4根直径为9的高强钢棒，48表示4根直径为8的HRB400的钢筋.

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表 2 钢材的力学性能

Table 2. Mechanical properties of steel

材料类型	屈服强度/MPa	屈服应变/%	极限强度/MPa	弹性模量/GPa
HG9	1386.00	0.87	1437.84	206
8	383.85	0.23	444.92	208

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表 3 混凝土材料性能

Table 3. Properties of concrete materials

名称	强度等级	立方体抗压强度/MPa	轴心抗压强度/MPa	弹性模量/GPa
取值	C40	44.36	35.31	3.46

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