盾构隧道穿越新建海堤时的设计与沉降观测分析  

Design of a shield tunnel underground crossing newly-built sea dike and analysis of settlement observation

作　　者：吴建国[1] 童建国[1] 边学成[2] 黄建武[1] 

机构地区：[1]浙江省电力设计院,浙江杭州310012 [2]浙江大学,浙江杭州310027

出　　处：《武汉大学学报（工学版）》2009年第S1期326-330,共5页Engineering Journal of Wuhan University

摘　　要：浙江沿海电厂新建海堤一般位于滩涂软弱土层上,其工后沉降量大,电厂循环水取、排水采用盾构隧道穿越新建海堤时,一方面需考虑新建海堤的残余沉降对隧道结构安全产生的影响,另一方面需考虑盾构施工过程中对海堤土体的扰动及地表沉降等不利影响.通过对浙江沿海某电厂循环水取水采用盾构法隧道穿越新建海堤时的结构设计分析与沉降观测分析,获得一些初步成果,为类似工程设计与施工提供参考.The newly-built sea dike of coastal power plant in Zhejiang Province generally is located at the soft soil layer of tidal flat,its settlement after construction is relatively larger.The shield tunnel underground crossing the newly-built sea dike was adopted for water intake and drainage of power plant;The result was not only adverse effect of the residual settlement of the newly-built sea dike on the shield tunnel safety,but also adverse effect of the shield construction on the soil disturbance of sea dike and the ground settlement;both are considered respectively.The structural design and the settlement observation of shield tunnel underground crossing the newly-built sea dike used for water intake in a coastal power plant in Zhejiang Province,are researched.Research achievements can provide reference for the design and construction of similar projects.

关 键 词：盾构隧道 穿越 新建海堤 沉降 

分 类 号：U456.31[建筑科学—桥梁与隧道工程]