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吴平川,付青青,申彦利,习旺.双向加载情况下工字形SRC柱抗震性能数值分析[J].河北工程大学自然版,2019,36(3):1-6
双向加载情况下工字形SRC柱抗震性能数值分析
Numerical Simulation Analysis of Seismic Performance of H-shaped SRC Column under Bidirectional Loading
投稿时间:2019-08-28  
DOI:10.3969/j.issn.1673-9469.2019.03.001
中文关键词:  工字形SRC柱  纤维模型  双向水平加载  数值模拟  抗震性能
英文关键词:H-shaped SRC column  fiber model  bidirectional horizontal loading  numerical simulation  seismic performance
基金项目:国家自然科学基金资助项目(51378169)
作者单位
吴平川 河北工程大学 土木工程学院, 河北 邯郸 056038
河北工程大学 河北省装配式结构工程技术研究中心, 河北 邯郸 056038 
付青青 河北工程大学 土木工程学院, 河北 邯郸 056038 
申彦利 河北工程大学 土木工程学院, 河北 邯郸 056038
河北工程大学 河北省装配式结构工程技术研究中心, 河北 邯郸 056038 
习旺 张家口公路施工管理处, 河北 张家口 075000 
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中文摘要:
      为了研究工字形SRC柱在双向水平加载下的抗震性能,采用纤维模型对已有试验进行数值模拟,验证了纤维模型的适用性。基于此模型,考察了轴压比、配钢率、型钢强度等参数对工字形SRC柱在双向水平加载下的承载力、耗能及延性的影响,并与单向水平加载下的情况进行了对比。结果表明:轴压比对工字形SRC柱的抗震性能影响显著,随着轴压比的增大,柱子承载力先增大后减小,而滞回耗能和延性则随轴压比的增大逐步降低;配钢率对工字形SRC柱的抗震性能有一定影响,随配钢率的增大,柱的承载力、耗能及延性均有明显增长;承载力、耗能及延性均随型钢强度的增加而得到一定改善,但增幅较小。此外,双向加载下SRC柱的承载力、耗能及延性均较单向水平加载的低。
英文摘要:
      In order to study the seismic performance of H-shaped SRC column under bidirectional horizontal loading,the fiber model is used to simulate the existing tests,and the simulation results applicability the correctness of the model. Based on this model,the effects of axial compression ratio,steel ratio and steel strength on the bearing capacity,energy dissipation and ductility of H-shaped SRC column under bidirectional horizontal loading are investigated,and compared with those under unidirectional horizontal loading. The results show that the axial compression ratio has a significant influence on the seismic performance of H-shaped SRC column. As the axial compression ratio increases,the bearing capacity of the column first increases and then decreases,while the energy dissipation and ductility gradually decrease with the increase of the axial compression ratio;The steel ratio has a certain influence on the seismic performance of H-shaped SRC column,and the The bearing capacity,energy dissipation and ductility of the column increase obviously with the increase of the steel ratio;The bearing capacity,energy dissipation and ductility are all improved slightly with the increase of steel strength. In addition,the bearing capacity,energy dissipation and ductility of the SRC column under bidirectional loading are lower than those under unidirectional horizontal loading.
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