无结构底板挡墙承台梁计算分析与工程设计  

Calculation analysis and engineering design of pile capping beam bearing retaining wall without structural base slab

作　　者：刘德彬 LIU Debin(CMCU Engineering Co.,Ltd.,Chongqing 400039,China)

机构地区：[1]中机中联工程有限公司,重庆400039

出　　处：《建筑结构》2023年第10期140-143,112,共5页Building Structure

摘　　要：重庆及周边区域的民用建筑结构设计过程中,支承于桩基承台梁上的地下室结构挡墙形式较为普遍,而对于此类挡墙结构形式的挡墙根部计算约束的假定,不少结构工程师有着不同的见解。为进一步探索此类挡墙结构的实际受力情况,采用YJK软件中的实体单元有限元法进行分析,并借鉴《给水排水工程结构规范》(GBJ 69—1984),通过分析承台梁与挡墙截面刚度关系来明确挡墙根部约束类型,给出承台梁内侧增设一定宽度和厚度的结构底板或人字形地梁以满足其可视作不动铰支座的设计建议和配筋设计要点。In the process of structural design of civil buildings in Chongqing and surrounding areas,the form of basement structural retaining wall supported on pile foundation capping beam is common.Many structural engineers have different viewpoints on the assumption of calculation constraints at the retaining wall root of this kind of retaining wall structure.In order to further explore the actual stress condition of the retaining wall of this kind of structure,the solid element finite element method in YJK building structure design software was used for analysis,and with reference to the Code for Water Supply and Drainage Engineering Structures(GBJ 69—1984),the type of root restraint of the retaining wall was clarified by analyzing the relationship between the pile capping beams and the section stiffness of the retaining wall,and the design suggestions and reinforcement design points were given to add a certain width and thickness of structural base plate or herringbone ground beam on the inner side of the pile capping beam to meet the design of what can be regarded as immovable hinge support.

关 键 词：承台梁 挡墙 支座约束 实体单元 

分 类 号：TU375[建筑科学—结构工程]