基于子结构法的土-地下空间结构体系地震反应高效计算系统研究

为研发适用于土-地下空间结构相互作用体系地震反应分析的高效计算系统，本文基于子结构方法，综合利用ABAQUS软件和SASSI 2010的各自优势，通过二次开发，构建了一个适于土-地下空间结构动力相互作用分析的高效计算系统(ABAQUS-SASSI 2010 Combined System，简称ASCS)．该计算系统实现了ABAQUS软件和SASSI 2010的无缝连接，用户可以按照ABAQUS软件的可视化前处理功能，方便地建立包括土-地下空间结构相互作用体系在内的各种有限元模型，并调用和执行SASSI 2010程序的不同模块，按子结构方法对整个体系实施高效计算．为验证ASCS计算系统的有效性，文中首先采用ASCS计算系统对日本阪神地震中大开地铁车站的震害进行了模拟；然后，采用ABAQUS软件建立土-大开地铁车站结构相互作用体系的整体有限元分析模型，通过对比分析ASCS计算系统的子结构法结果和ABAQUS软件的整体有限元法结果，进一步验证了ASCS计算系统的计算精度和效率．结果表明：基于本文ASCS计算系统的数值模拟结果与阪神地震中大开地铁车站的震害结果一致；ASCS计算系统的子结构法结果与整体有限元法结果基本吻合，但前者的CPU时间是后者的1/21，明显提高了计算效率．

Study on High Efficient Calculation System for Seismic Response of Soil-Underground Space Structural System Based on Substructure Method

In order to develop a high efficient calculation system for seismic response analysis of soil-underground space structure interaction system, this paper comprehensively used the respective advantages of ABAQUS software and SASSI 2010 program to develop an efficient calculation system (ABAQUS-SASSI 2010 Combined System, abbreviated ASCS) based on the substructure method that is suitable for dynamic interaction analysis of soil-underground space structure through secondary development. The calculation system realized the seamless connection between ABAQUS software and SASSI 2010 program. Users could easily build various finite element models, including soil-underground space structure interaction systems, through the powerful visual pre-processing function of ABAQUS software. Then, the different modules of SASSI 2010 program were invoked and executed, and the entire system was efficiently calculated based on the substructure method. To verify the effectiveness of the ASCS calculation system, firstly, the seismic damage of Daikai station was simulated. Then, the overall finite element model of soil-Daikai station interaction system was established using the ABAQUS software. Through the comparison between the results of the ASCS calculation system using the substructure method and the results of ABAQUS software using the complete finite element method, the accuracy and efficiency of the ASCS calculation system was further verified. The results showed that the numerical simulation results based on the ASCS calculation system are consistent with the seismic damage investigation of the Daikai subway station. The substructure method results of the ASCS calculation system are generally consistent with the complete finite element method results, but the CPU time of the former is 1/21 of the latter, indicating significant improvement of the calculation efficiency.