双向加载的钢筋混凝土柱在扭转或轴压作用下的实验研究

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英文篇名：Experimental Tests on Reinforced Concrete Columns Subjected to Horizontal Loading under Axial Force or Torsion 中文刊名：结构工程师 英文刊名：Structural Engineers 作者：孙宪春 ; 邱法维 ; 万力 英文作者：SUN Xianchun1 QIU Fawei2 WAN Li1(1.School of Water Resource and Environment ; China University of Geoscience ; Beijing 100083 ; China ; 2.Department of Civil Engineering ; Tsinghua University ; Beijing 100084 ; China) 中文关键词：多维地震 ; 加载模式 ; 拟静力实验 ; 滞回耗能 ; 损伤指标 英文关键词：multidimensional earthquake ; loading mode ; quasi-static test ; accumulative hysteresis dissipation energy ; damage index 出版日期：2008-12-28 机构：中国地质大学水环学院;清华大学土木工程系; 年：2008 期：06 出版单位：结构工程师

摘要

多维地震对结构构件的破坏作用很大,由于目前还没有很好地建立起恢复力模型并进行非线性动力分析,所以实验作为最直接的手段显得尤为重要。介绍的实验将6根钢筋混凝土柱分成两组,每组3根,在双水平方向施加低周反复荷载,一组施加轴力,另一组施加扭矩,采用了矩形、菱形及椭圆形的位移加载模式。实验结果表明,在施加轴压的情况下,试件滞回耗能强,延性特性明显;而在施加扭转的情况下,试件的滞回耗能差,表现出脆性的破坏特征。在相同的加载模式下,扭转产生的损伤比轴压产生的大。
The mechanism of the multi-dimension earthquake affecting buildings is complicated,therefore,experimental tests become important means to solve the problem.Six specimens of reinforced concrete column divided into two groups were investigated in this paper.one group subjected to axial loading and the other to torsional loading,at the same time they were both under low-cycle loading.Three types of loading modes were analyzed,and the accumulative hysteresis dissipation energy and damage indexes were calculated on the basis of test results.They demonstrate the ductility of the reinforced concrete columns is dominant under axial force,while the brittleness is in evidence under torsional loading.

引文

[1]中国建筑科学研究院.JGJ 101—96建筑抗震实验方法规程[S].北京:中国建筑工业出版社,1997.
    [2]朱伯龙.我国钢筋混凝土恢复力特性的研究[C].唐山地震十周年中国抗震防灾论文集,1987.
    [3]雷托,钱江,刘成清.混凝土损伤塑性模型应用研究[J].结构工程师,2008,24(2):22-27.
    [4]Powell G H,Allahabadi R.Seismic damage predictionby deterministic methods:concept and procedures[J].Earthquake Engineering&Structural Dynamics,1988;16:719-734.
    [5]Park Y J,Ang A H S.Mechanistic seismic damagemodel for reinforced concrete[J].StructureEngineering,ASCE,1985,111(4):722-739.
    [6]Park Y J,Ang A H S,Wen Y K.Seismic damageanalysis of reinforced concrete buildings[J].StructureEngineering,ASCE,1985,111(4):740-757.
    [7]Qiu Fawei,Li Wenfeng,Pan Peng,et al.Experimentaltests on reinforced concrete columns under biaxialquasi-static loading[J].Engineering Structures,2002,24:419-428.