粘钢加固地下室抗冲击动力分析

Three-dimensional Analysis of Basement Strengthened by Bonded Steel Plate under Dynamic Load of Nuclear Blast

首次提出将粘钢加固技术用于平战功能转换的构思,并以上海某商场地下室为例,将直接积分的三维有限元法用于地下室的动力响应分析,对现有结构和转换方案分别进行了动力分析;讨论了单元类型、网格密度、时间步长等对计算结果的影响,对主体结构提出了采用粘钢技术进行加固的方案,并与其它加固方案比较,由此论证了这类技术用于平战功能转换的可能性和优越性.

In this paper,a new idea is first put forward that the technology of strengthening by bonded steel plate is applied to functional transformation from peacetime to wartime. After discussing the influence of element type, mesh density and time step on the precision and stability of the calculation, a calculation model of the sample basement is constructed to check the strength before and after consolidation . By means of the result of numeral analysis, the method of strengthening by bonded steel plate is compared with that by beam used to consolidate the main body. The former method proves to be of possibility and optimization used for functional transformation from peacetime to wartime.