| 基于组件法的穿心螺栓连接CFST柱节点初始刚度计算 |
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| 引用本文： | 高山,张影,赵国豪,徐嫚,王社良.基于组件法的穿心螺栓连接CFST柱节点初始刚度计算[J].上海力学,2020,41(2):363-369. |
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| 作者姓名： | 高山 张影 赵国豪 徐嫚 王社良 |
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| 作者单位： | 西京学院陕西省混凝土结构安全与耐久性重点实验室,陕西西安710123;重庆大学土木工程博士后流动站,重庆400030;西安建筑科技大学土木工程学院,陕西西安710055;东北林业大学土木工程学院,黑龙江哈尔滨150090 |
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| 基金项目： | 国家自然科学基金;国家自然科学基金;陕西省自然科学基础研究计划;西京学院高层次人才基金项目 |
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| 摘 要： | 本文基于EC3中的组件法，分析并建立了不同类型穿心螺栓连接CFST柱节点的力学模型，提出了EC3中未涉及的加强角钢的组件模型以及穿心螺栓连接刚度系数计算公式，推导了不同节点的初始刚度计算公式，试验结果和公式结果的对比表明，采用EC3给出的受拉螺栓刚度系数将大大低估穿心螺栓连接CFST柱节点的初始转动刚度，而采用本文所提出的考虑穿心螺栓预紧力的受拉螺栓刚度系数计算公式则与试验结果吻合较好．
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| 关 键 词： | 组件法 钢管混凝土 初始刚度 穿心螺栓 连续倒塌 |
Initial Stiffness Calculation of CFST Joint Using Long Bolts Based on Component Method |
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| GAO Shan,ZHANG Ying,ZHAO Guohao,XU Man,WANG Sheliang.Initial Stiffness Calculation of CFST Joint Using Long Bolts Based on Component Method[J].Chinese Quarterly Mechanics,2020,41(2):363-369. |
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| Authors: | GAO Shan ZHANG Ying ZHAO Guohao XU Man WANG Sheliang |
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| Abstract: | Based on the component method in EC3, the mechanical models for various types of CFST column joints using long bolts are developed in this paper. Component model for stiffened angle and calculation formula for stiffness coefficient of long bolt, which are not covered in EC3, are proposed. The calculation formulas for the initial stiffness of various joints are derived. The comparison between the test results and the calculated results shows that the calculated results using the formula for stiffness coefficient of bolt in tension in EC3 would greatly underestimate the initial stiffness of CFST column joints using long bolts. The calculated results by using the proposed formula match well with the test results. |
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| Keywords: | component method CFST initial stiffness long bolts progressive collapse |
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