盾构管片开孔临时支护措施研究

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【摘 要】:为了优化盾构管片开孔临时支撑系统,依托以色列特拉维夫绿线项目,对新型环形钢支撑支护形式进行了数值模拟理论分析。验证了此结构样式具有良好的结构稳定性、经济性、便捷施工性,可为类似管片破除临时支护或者管片加固提供一种新的解决方案。
【关键词】:盾构;管片开孔;环形钢支撑;支护措施
Study on Temporary Support Measures for Tunnel Segment Opening
GAN Yicheng, LIN Yunjun, HE Aihua, ZHU Guangya
(China Railway Liuyuan Group Co. Ltd., Tianjin 300308,China)
【Abstract】:To optimize the temporary support system for tunnel segment openings, a new type of circular steel support was analyzed by numerical simulation based on Tel Aviv Green Line project. It is proved that this structure style has good structural stability, economy and convenient construction, and can provide a new solution for similar temporary support or segment reinforcement.
【Key words】:tunnel shield; segments opening; circular steel support; support measures
盾构区间的附属结构,例如联络通道、区间通风井、 雨水泵房等,通常采用传统暗挖法施工[1],施工前需要破除已拼装好的盾构管片,再实施洞内开挖,施工相关结构。(剩余3828字)