工程力学 ›› 2019, Vol. 36 ›› Issue (6): 157-163,182.doi: 10.6052/j.issn.1000-4750.2018.05.0268

• 土木工程学科 • 上一篇    下一篇

高延性纤维增强水泥基复合材料(ECC)连续梁模型在地震荷载下的响应及其敏感性分析

古泉1, 张宁1, 郑越2   

  1. 1. 厦门大学土木工程系, 福建, 厦门 361005;
    2. 同济大学桥梁工程系, 上海 200092
  • 收稿日期:2018-05-24 修回日期:2018-12-03 出版日期:2019-06-25 发布日期:2019-05-31
  • 通讯作者: 郑越(1975-),男,山东人,助理教授,博士,硕导,主要从事桥梁结构的抗震与减震研究(E-mail:yzheng@tongji.edu.cn). E-mail:yzheng@tongji.edu.cn
  • 作者简介:古泉(1974-),男,新疆人,教授,博士,博导,主要从事非线性结构体系地震动力分析等(E-mail:quangu@xmu.edu.cn);张宁(1995-),男,山东人,硕士生,主要从事结构分析(E-mail:zhangningswing@outlook.com).
  • 基金资助:
    国家重点研发计划资助项目(2016YFC0701106);国家自然科学基金项目(51261120376,51578473);浦江人才计划资助项目(16PJ1409600)

RESPONSE AND SENSITIVITY ANALYSIS OF CONTINUOUS BEAM MODEL USING ENGINEERED CEMENTITIOUS COMPOSITE (ECC) UNDER SEISMIC LOADING

GU Quan1, ZHANG Ning1, ZHENG Yue2   

  1. 1. Department of Civil Engineering, Xiamen University, Xiamen, Fujian 361005, China;
    2. Department of Bridge Engineering, Tongji University, Shanghai 200092, China
  • Received:2018-05-24 Revised:2018-12-03 Online:2019-06-25 Published:2019-05-31

摘要: 综述了高延性纤维增强水泥基复合材料(engineered cementitious composite,ECC材料)在拉伸荷载下呈现高延展性等特点,常用于弥补普通混凝土抗拉性能不足的缺点。该文基于现有的ECC本构模型,利用非线性有限元平台OpenSees对已有的算法进行二次开发,利用OpenSees建立ECC连续梁模型,并将模拟结果与试验结果进行了比较分析。该文基于直接微分法(direct differentiation method,DDM),推导实现ECC材料参数的敏感性算法,并将DDM计算结果与有限差分法(finite difference method,FDM)结果进行对比,验证了DDM分析算法的优越性。该文利用连续梁算例,体现敏感性分析的重要性,并将模拟结果进行分析总结。

关键词: 有限元, 敏感性分析, ECC本构, OpenSees, 连续梁

Abstract: The ECC material exhibit high ductility under tensile load and are frequently used as substitute of concrete. After reviewing the current research on the existing ECC constitutive model, this paper utilized the nonlinear finite element platform OpenSees and conduct secondary development on the established algorithm. Using the software to simulate the behavior of the ECC continuous beam model, comparison is made between the simulation results and the experimental results. Furthermore, this paper derives the sensitivity algorithm for ECC material parameters based on the DDM. The DDM calculation results is compared with the FDM results, which further verified the superiority of DDM. This paper also present the simulation results of the continuous beam as a case study to demonstrate the importance of sensitivity analysis.

Key words: finite element analysis, sensitivity analysis, ECC constitutive model, OpenSees, continuous beam

中图分类号: 

  • U442.55
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