混凝土板柱结构地下车库设计方法的若干讨论  

Critical Thinking on Design Methods for Reinforced Concrete Plate-Column Structures Used in Underground Garages

作　　者：杜旭 DU Xu(Shanghai Tongjian-Qianghua Architecture Design,Ltd.,Shanghai 200072,China)

机构地区：[1]上海同建强华建筑设计有限公司,上海200072

出　　处：《结构工程师》2024年第2期211-217,共7页Structural Engineers

基　　金：住房和城乡建设部课题(2020-K-132)。

摘　　要：针对混凝土板柱结构地下车库的若干设计方法展开讨论,目的是澄清规范释义、消除认识歧义和完善规范内容。讨论包括三方面:①建议在规范中增加直剪设计内容;②梳理了增强抗冲切承载力的四种措施,介绍了其特点和涉及的规范内容,初步分析了它们设计表达式的安全裕度系数;③澄清地下室顶板作为上部结构嵌固部位的条件,以算例说明相关范围最小取地上结构投影范围是合理可行的。研究工作对在地下车库中科学合理地推广板柱结构具有积极作用。The purpose of this study is to interpret the code provisions,resolve differences,and integrate the code content when using reinforced concrete plate-column structures in underground garages.The critical thinking includes three aspects.First,the possibility of overloads is higher during the construction of underground garage compared to that of the superstructure.Therefore,the design procedure related to direct shear is recommended to include in the design method in the revised codes.Furthermore,four measurements were introduced to improve the punching resistance with respect to their characteristics and involved codes.Safety margin factors were also calculated when using the design expressions of punching.Finally,the conditions were expounded when using the top slabs of a basement as the embedded end for the superstructure.A typical case study was performed to demonstrate the rationality of the minimum“relevant range”.In general,the critical thinking presented in this study is helpful for popularizing the use of reinforced concrete plate-column structures in underground garages.

关 键 词：地下车库 板柱结构 相关范围 直剪 冲切 

分 类 号：TU398.1[建筑科学—结构工程] TU93