纤维增强混凝土剪力墙双参数地震损伤模型研究*
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（1 西安理工大学土木建筑工程学院，西安 710048; 2 西安建筑科技大学土木工程学院， 西安 710055；3 中科院建筑设计研究院有限公司，西安 710065）［摘要］以4个纤维增强混凝土剪力墙试件在低固往复荷载作用下的抗震性能试验为基础，充分考虑纤维增强混凝土良好的延性和抗剪性能以及水平荷载对试件累积损伤的影响，提出了纤维增强混凝土剪力墙双参数地震损伤模型。通过与试验结果对比，发现该模型能较好地反映纤维增强混凝土剪力墙的受力机理和破坏模式。在此基础上，采用试验过程和损伤指数相结合的方法，研究了影响纤维增强混凝土剪力墙损伤性能的主要因素，包括轴压比、箍筋体积配箍率和纤维增强混凝土区高度，并给出其损伤过程各个阶段损伤指数所对应的试验现象，为从宏观试验现象得出结构损伤程度提供了便利条件。［关键词］纤维增强混凝土剪力墙; 双参数地震损伤模型; 损伤指数; 损伤演化分析; 参数分析中图分类号：TU377.9+4,TU311.4 文献标识码：A 文章编号：1002-848X(2014)19-0087-05Study on dual parameter seismic damage model of fiber reinforced concrete shearwallsKou Jialiang1, Liang Xingwen2, Deng Mingke2, Gu Xiaorui3(1 School of Civil Engineering and Architecture, Xi′an University of Technology, Xi′an 710048, China; 2 School of Civil Engineering, Xi′an University of Architecture and Technology, Xi′an 710055, China; 3 Institute of Architecture Design and Research, Chinese Academy of Sciences, Xi′an 710065, China)Abstract:Based on the seismic performance experiments on four fiber reinforced concrete(FRC) shearwall specimens under low cyclic loading, the dual parameter seismic damage model was proposed considering the well ductility and shear performance of FRC and the effects of horizontal loading on cumulative damage of the specimen. The comparison of the calculated and the experimental results reveal that the dual parameter seismic damage model can well reflect the stress mechanism and failure mode of FRC shearwalls. The method combining the test process and damage index was adopted, and main factors that influenced damage performance of FRC shearwalls were studied, including axial compression ratio, stirrup volumn ratio and height of FRC. Meanwhile, the corresponding experimental phenomena of damage indexs at the different stages during the entire loading process were derived, providing convenient conditions for getting structure damage degree from macroscopic phenomena.Keywords: fiber reinforced concrete shearwall; dual parameter seismic damage model; damage index; damage evolution analysis; parameter analysis*国家自然科学基金项目(51408487，51278402，51078305，50908187)，陕西省自然科学基金项目(2014JQ7292)，西安理工大基础研究基金(118-211206,118-211403)，中国博士后第56批面上基金资助项目，陕西省教育厅专项科学研究计划项目（14JK1516）。作者简介：寇佳亮，博士，讲师，Email:jialiangkou0918@163.com。参考文献［1］GB 50011—2010 建筑抗震设计规范［S］.北京: 中国建筑工业出版社，2010.［2］邓明科，寇佳亮，梁兴文,等. 延性纤维混凝土剪力墙抗震性能试验研究［J］. 工程力学, 2014, 31(7): 170-177.［3］Applied Technology Council. Database damage evaluation data for California［R］. Redwood City: Applied Technology Council, 1985：1-3.［4］Applied Technology Council. Earthquake damage evaluation data for California［R］. Redwood City: Applied Technology Council, 1985：5-8.［5］STEPHEN A MAHIN, VITEMLO V. Bertero. An evaluation of inelastic scismic design spectra ［J］. Journal of Structural Engineering, ASCE, 1981, 107(9): 1777-1795.［6］DAVID DARWIN, CHARLES K NMAI. Energy dissipation in RC beams under cyclic load ［J］. Journal of Structural Engineering, ASCE, 1986, 112(8): 1829-1846.［7］YOUNG-JI PARK, ALFREDO H S ANG, YI KWEN WEN. Seismic damage analysis of reinforced concrete buildings［J］.Journal of Structural Engineering, ASCE,1985, 111(4): 740-757.［8］何利,叶献国. Kratzig及Park-Ang损伤指数模型比较研究［J］.土木工程学报, 2010, 43(12):1-6.［9］梁兴文，邓明科，张兴虎，等. 高性能混凝土剪力墙性能设计理论的试验研究［J］. 建筑结构学报，2007，28(5)：80-87.［10］梁兴文，辛力，邓明科，等. 高强混凝土剪力墙抗震性能及其性能指标试验研究［J］. 土木工程学报，2010，43(11)：37-45.［11］梁兴文,杨鹏辉,崔晓玲,等. 带端柱高强混凝土剪力墙抗震性能试验研究［J］.建筑结构学报, 2010, 31(1):23-32.［12］梁兴文,白亮,杨红楼,等. 型钢高性能混凝土剪力墙抗震性能试验研究［J］.工程力学,2010, 27(10):131-138.［13］梁兴文,马恺泽,李菲菲,等. 型钢高强混凝土剪力墙抗震性能试验研究［J］. 建筑结构学报, 2011, 32(6)：68-75.
