左右线分叉式隧道设计探讨

The Study on the Design of Double-line Bifurcation Type Tunnel

受周边既有建筑物的限制,有些隧道无法设计成常规形式,可以左右线分幅设置。本文对左右线分叉式隧道从总体设计、围护结构设计、主体结构设计三个方面进行分析,提出分叉式隧道进行围护结构设计时,需根据基坑深度及左右线高差确定围护结构形式,进行主体结构设计时,需分别根据左线和右线的外部条件确定侧墙高度、主体结构的尺寸、配筋等,以期为日后的类似工程提供参考。

Limited by adjacent structures effectively,the left and right line of the tunnel who can’t be designed in the usual way may be staggered.Three aspects of the double-line bifurcation type tunnel are analyzed concerning the overall design、the building envelope design and the main structure design in this article.It is proposed that the building envelope of the bifurcation type tunnel should be designed according to the depth of foundation pit and the the height difference of left and right line.The main structure of the bifurcation type tunnel should be designed according to the respective external conditions of left and right line in order to get the height of sidewall,the structure sizes and the the reinforcement.This can be the reference to similar projects in the future.