地下道路结构配筋设计探讨  

Discussion on Reinforcement Design of Underground Road Structure

作　　者：顾志超 GU Zhichao

机构地区：[1]上海市政交通设计研究院有限公司,上海市200030

出　　处：《城市道桥与防洪》2021年第12期203-205,214,M0019,共5页Urban Roads Bridges & Flood Control

摘　　要：在已有研究的基础上,针对明挖地下道路结构,从刚域、削峰、腋角、轴力、结构空腔等方面进行结构配筋设计探讨,建立多个模型对比分析。结果表明,地下道路结构设计时,宜考虑腋角对结构内力及配筋的有利作用,大幅减小钢筋用量及造价。当地道覆土较厚时,应对结构周边市政基础设施增设结构空腔,节约地下空间资源,大幅减小工程造价。On the basis of the existing research,for the structure of open-cut underground roads,the structural reinforcement design is discussed from the aspects of rigid zone,peak clipping,haunch,axial force,structural cavity,etc.,and the multiple models are established for comparative analysis.The results show that in the design of the underground road structure,the beneficial effect of the haunch on the internal force and reinforcement of the structure should be considered so as to greatly reduce the amount of steel bars and the cost.When the subway earthing is thick,the structural cavities should be added to the municipal infrastructure around the structure to save the underground space resources and greatly reduce the engineering cost.

关 键 词：地下道路结构 刚域 削峰 腋角 轴力 结构空腔 

分 类 号：U452.2[建筑科学—桥梁与隧道工程]