地下室侧壁及底板在不同边界条件下的实际受力状况分析及设计  

Analysis and Design of Actual Stress State of Basement Side Wall and Floor under Different Boundary Conditions

作　　者：郑硕锋 ZHENG Shuofeng(China Construction Eighth Engineering Division Corp.Ltd.Guangzhou 510663,China)

机构地区：[1]中建八局华南公司设计研究院,广州510663

出　　处：《广东土木与建筑》2022年第8期37-41,46,共6页Guangdong Architecture Civil Engineering

摘　　要：传统的地下室侧壁计算方法,采用多跨单向板模型进行计算,忽略构件和支座的刚度和变形的影响,这与实际的受力状况存在较大差异。采用Midas软件对按常规尺度布置的地下室的侧壁和底板的受力状态进行有限元分析,与多跨单向板模型计算结果进行比对。结果显示:各层楼板和梁、柱等构件的刚度,对侧壁弯矩的分布存在很大的影响,且出现应力集中现象;侧壁在顶板处的弯矩有所增大,中间楼层处的弯矩减小非常明显,而底板处的弯矩则有所减小;靠近侧壁的底板,承担侧壁传递过来的内力、弯矩增幅非常明显。根据这些分析结果,对地下室侧壁和底板的设计提出一些措施和建议。The traditional calculation method of basement sidewall adopts multi span one-way slab model,ignoring the influence of stiffness and deformation of components and supports,which is quite different from the actual stress state.Using Midas software,the stress state of the side wall and bottom plate of the basement arranged according to the conventional scale is analyzed by finite element method,and compared with the calculation results of the multi span one-way slab model.The results show that the stiffness of each floor,beam,column and other members has a great influence on the distribution of side wall bending moment,and there is a phenomenon of stress concentration.The bending moment of the side wall at the top plate increases,the bending moment at the middle floor decreases obviously,and the bending moment at the bottom plate decreases.The bottom plate near the side wall bears the internal force transmitted from the side wall,and the increase of bending moment is very obvious.According to these analysis results,some measures and suggestions for the design of basement side wall and bottom plate are put forward for reference.

关 键 词：地下室侧壁 地下室底板 支座刚度 有限元分析 

分 类 号：TU28[建筑科学—建筑设计及理论]