Numerical Simulation of Response of SRC Columns Subjected to Blast Loading

作     者：SUN Jianyun LI Guoqiang LU Yong 

作者机构：College of Civil Engineering Tongji University Shhnghai 200092China School of Civil and Environmental Engineering Nanyang Technological University Nanyang Avenue Singapore 639798 Singapore 

出 版 物：《Transactions of Tianjin University》 (天津大学学报（英文版）)

年 卷 期：2006年第12卷第B09期

页      面：126-131页

核心收录：

学科分类：081401[工学-岩土工程] 08[工学] 081402[工学-结构工程] 081304[工学-建筑技术科学] 0813[工学-建筑学] 0814[工学-土木工程] 

主　　题：blast steel reinforced concrete column failure mode concrete damage model 

摘      要：The dynamic characteristics and failure modes of steel reinforced concrete (SRC) columns subjected to blast loading are complicated because of the transient stress wave in the SRC columns and the interaction between steel and concrete. This paper presents a numerical simulation of the response of SRC columns subjected to blast loading using hydrocode LS-DYNA. In the numerical model, a sophisticate concrete material model (the Concrete Damage Model) is employed with consideration of the strain rate effect and the damage accumulation. An erosion technique is adopted to model the spalling process of concrete. The possible failure modes of SRC columns are evaluated. It is observed that the failure of SRC columns subjected to blast load can generally be classified into three modes, namely, a direct failure in concrete body due to the stress wave, a transverse shear failure near the support sections due to the high shear force, and a flexural failure pertaining to large local and global deformation of the reinforcing steel.