| 剪力墙的等效周期和等效阻尼比研究 |
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| 引用本文： | 熊二刚,徐涵,张倩,梁兴文.剪力墙的等效周期和等效阻尼比研究[J].世界地震工程,2020,0(4):071-81. |
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| 作者姓名： | 熊二刚 徐涵 张倩 梁兴文 |
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| 作者单位： | 长安大学 建筑工程学院,陕西 西安 710061;西安欧亚学院 建筑工程学院,陕西 西安 710065;西安建筑科技大学 土木工程学院,陕西 西安 710055 |
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| 基金项目： | 国家自然科学基金;国家自然科学基金;国家自然科学基金;陕西省自然科学基金;陕西省自然科学基金;教育厅科学研究项目;西安欧亚学院科研项目 |
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| 摘 要： | 结构弹塑性反应可用等效线性化方法中的等效刚度和等效阻尼比进行计算。为研究钢筋混凝土剪力墙的等效刚度和等效阻尼比，通过分析剪力墙的力-位移简化四折线滞回模型，推导了其屈服点和峰值点的等效刚度、等效周期和等效阻尼比的计算公式。为验证其准确性和适用性，采用提出的峰值点等效刚度、等效阻尼比公式和FEMA 440建议的公式，分别计算了42片钢筋混凝土剪力墙试件的等效刚度和等效阻尼比，并进行了对比分析。结果表明:提出的计算公式和FEMA 440建议的公式所得到的等效周期和等效阻尼比值与试验值比较吻合，因此，所提出的计算剪力墙的等效周期和等效阻尼比的公式较为合理。
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| 关 键 词： | 剪力墙 等效线性化 等效周期 等效阻尼比 四折线滞回模型 |
Research on equivalent period and equivalent damping ratio of shear walls |
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| XIONG Ergang,XU Han,ZHANG Qian,LIANG Xingwen.Research on equivalent period and equivalent damping ratio of shear walls[J].World Information On Earthquake Engineering,2020,0(4):071-81. |
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| Authors: | XIONG Ergang XU Han ZHANG Qian LIANG Xingwen |
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| Affiliation: | 1. School of Civil Engineering, Chang’an University, Xi’an 710061, China;2. College of Civil Engineering, Xi’an Euraisa University, Xi’an 710065, China;3. School of Civil Engineering, Xi’an University of Architecture & Technology, Xi’an 710055, China |
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| Abstract: | The elastoplastic response of the structure can be calculated by the equivalent stiffness and equivalent damping ratio in the equivalent linearization method. In order to study the equivalent stiffness and damping ratio of reinforced concrete shear walls, the simplified four-fold line force-displacement hysteretic model of shear walls is analyzed, and the formulas for calculating the equivalent stiffness, equivalent period and equivalent damping ratio are derived at the yield points and peak points. To verify the accuracy and applicability of the above proposed formulas, the equivalent stiffness and equivalent damping ratio of 42 reinforced concrete shear wall specimens are calculated and compared by the formulas herein and the formulas in FEMA 440. The results show that the equivalent period and equivalent damping ratio obtained by the calculation formula developed in this paper and the formula proposed by FEMA 440 are in good agreement with the experimental values. Therefore, the proposed formula is more reasonable in calculating the equivalent period and equivalent damping ratio of shear walls. |
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| Keywords: | shear walls equivalent linearization equivalent period equivalent damping ratio four-fold line hysteresis model |
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