摘要
以苏州市阳澄西湖第三通道主线双向六车道明挖隧道为依托,在相同条件下分别进行标准矩形结构与折板拱结构受力分析,以主体结构混凝土数量与钢筋数量为基本量,考虑两种结构的施工难度,引入施工难度系数λ,综合确定断面经济指标M,以研究标准矩形结构与折板拱结构的受力特点与经济性。最终确定该工程主线隧道4.5m以下推荐采用标准矩形结构,4.5m以上推荐采用折板拱结构。
Based on the two-way six-lane tunnel with open cut method on the main line of the third passage of Yangchengxi Lake in Suzhou,the stress analysis of standard rectangular structure and folded plate arch structure is carried out respectively under the same conditions.Taking the number of concrete and steel bars in the main structure as the basic quantity,considering the construction difficulty of the two structures,the construction difficulty coefficientλis introduced,and the section economic index M is determined comprehensively to study the stress characteristics and economy of the standard rectangular structure and folded plate arch structure.Finally,the standard rectangular structure is recommended below 4.5m of the tunnel of the main lineof the project and the folded plate arch structure is recommended above 4.5m.
作者
杨旭
Yang Xu(China Railway Fifth Survey and Design Instirute Group Co.,Ltd.,Beijing 102600,China)
出处
《北方交通》
2021年第3期78-82,共5页
Northern Communications
基金
中铁第五勘察设计院集团有限公司课题(T5Y2019-C04)
关键词
明挖法隧道
矩形结构
折板拱结构
经济性
Tunnel with open cut method
Rectangular structure
Folded plate arch structure
Economy
