济南黄河公路大桥改扩建工程公轨合建段区间隧道设计

Design of running tunnel combined construction of highway and railway of the reconstruction and expansion project of Jinan Yellow River highway bridge

G104京岚线黄河公路大桥改扩建工程预留轨道交通7号线土建工程,公轨合建段区间隧道采用明挖顺作法施工。对设计要点进行了研究,包括结构选型,区间结构与新建高架桥、零点立交匝道桥等特殊位置关系,基坑围护设计及环境风险及处理等。经过比选,确定了安全、合理、经济的设计方案。

Jinan rail transit line 7 crossing the Yellow River will be constructed with the reconstruction and expansion project of Jinan Yellow River highway bridge,the running tunnel combined construction of highway and railway is adopted cut and cover method.The design highlights of the running tunnel is introduced,such as selection of structural system,the special relationship between the structure of running tunnel and newly-built viaduct or ramp bridge,design of the retaining structure,and the treatment of environmental risks.According to the scheme comparison,the results show the design scheme is safe reasonable and economical.