复合式中墙连拱隧道衬砌结构计算方法探讨
摘要:由于连拱隧道荷载计算理论不成熟,现有结构计算模型很难准确模拟复合式中墙连拱隧道的受力机理,所以目前没有针对复合式中墙连拱隧道统一的结构计算方法。基于双塌落拱的假定确定连拱隧道荷载计算方法,使用有限元计算软件,用仅受压弹簧模拟中墙和二次衬砌之间的作用,基于荷载结构法合理建立复合式中墙连拱隧道衬砌结构计算模型。结合苏州凤凰山连拱隧道的设计,使用该模型计算隧道衬砌的受力,并进行配筋和强度安全系数计算,为复合式中墙连拱隧道设计计算提供有益的探讨。
Abstract:As the theory of calculation method of designing load is immature, and the existing calculation model could not calculate the lining structure of multi-arch tunnel exactly, so there is not a united method to calculate the lining structure. Based on the two slumping arches assumption, a load defining method of multi-arch tunnel is put forward. The interaction between mid-board and lining structure is simulated by pressure springs, and the lining structure calculation model of multi-arch tunnel with compound mid-board is established based on load-structure method. Combing the design and calculation of Fenghuang tunnel in Suzhou, the lining structure is calculated by the model, and the reinforcement ration and stress safety factor are calculated, and this could provide useful discussion on the design and calculation of multi-arch tunnel with compound mid-board.
中文标题：
复合式中墙连拱隧道衬砌结构计算方法探讨
Discussion on Lining Structure Calculation Method of Multi-arch Tunnel With Compound Mid-board
作者：
王涛,方忠强,李浩
Wang Tao,Fang Zhongqiang,Li Hao
作者简介:王涛,1982年生,男,汉族,山东人,硕士,助理工程师,主要从事隧道工程的设计和研究工作。E-mail:wangthp@163.com
通讯地址：
江苏省交通规划设计院有限公司, 江苏南京 210005
JiangsuProvincialCommunicationPlanningandDesigningInstituteCo.,LTD,Nanjing210005,Jiangsu,China
中图分类号:U459.2
出版物：岩土工程技术
收稿日期:2008-11-25
关键词:连拱隧道,复合式中墙,结构计算,荷载结构法
Key words:multi-arch tunnel,compound mid-board,structure calculation,load-structure method
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