Quantitative Evaluation of Deterioration on Capacity and Ductility of RC Structural Members under Plastic Region Using Three-Dimensional FEM Analysis

考虑循环加载历史和加载速率对三维钢筋混凝土构件力学性能的影响，编制了循环大变形钢筋混凝土结构构件的高精度有限元分析程序。通过对分析结果的深入研究，了解了钢筋混凝土结构构件承载力和延性劣化的机理和定量评价方法。本研究取得了以下研究成果：1）研究了钢筋混凝土结构构件承载力劣化的机理; 2）分析了承载力劣化对钢筋混凝土构件结构性能的影响。为了合理地评价钢筋混凝土构件的结构性能，有必要定量地了解钢筋混凝土构件在未来地震反复荷载作用下的结构性能退化情况。3）结构构件承载力退化对钢筋混凝土构件抗震性能的影响 关于我们 建筑物进行了研究。因此，有必要对钢筋混凝土结构进行地震反应分析，以定量地考虑构件性能退化对结构性能的影响。在此基础上，本文还进行了以下几个方面的研究：1）影响钢筋混凝土结构构件在塑性区内承受多向荷载作用下承载力过度退化的主要因素的参数分析，2）对地震时三向荷载作用下钢筋混凝土构件的渐进破坏过程的认识地震时反复荷载作用下钢筋混凝土结构构件性能劣化的定量评价概要4）利用报告和互联网上的万维网，发表关于钢筋混凝土结构构件变形性能的实验和分析定量评价的研究成果。少

Considering the influence of cyclic loading histories and loading rates on mechanical properties of three-dimensional RC elements, the high-precision FEM analytical program for RC structural members subjected to cyclic large deformation was developed. From detailed investigations of analytical results, mechanisms and quantitative evaluation of deterioration on capacity and ductility of RC structural members were understood The following research results may be obtained in this study :1)Mechanisms of deterioration on capacity of RC structural members were investigated.2)Influences of capacity deterioration on structural performance of RC members analytically were discussed. In order to rationally evaluate structural performance of RC members, it is necessary to quantitatively understand deterioration of structural performance of RC members subjected to cyclic loadings at an earthquake in the future.3)Influences of capacity deterioration of structural members on seismic performance of RC … More buildings were studied. It is necessary to carry out seismic response analysis of RC buildings considering quantitative effects of capacity deterioration on structural performance of RC members. In that case, it was possible and tried to solve some RC buildings with micro FEM analysis using cooperation of PC and super computer.Furthermore, the results of following items were arranged.1)Parametric analysis of main factors on excessive capacity deterioration of RC structural members subjected to multi-directional loadings under plastic region, and discussion of that preventing techniques.2)Understanding of progressive deterioration process of RC members subjected to simultaneous three-directional loading including cyclic arc motions at an earthquake.3)Summary of quantitative evaluation on performance deterioration of RC structural members subjected to reversed cyclic loadings at an earthquake.4)Publication of research results regarding to experimental and analytical quantitative evaluation of deformation performance of RC structural members using a report and WWW on Internet. Less