谈多断面城市隧道明挖基坑中支护形式应用

Application of support form in open pit excavation of multi section urban tunnel

结合株洲市铁东路核心段新建工程的地质条件和周边环境情况,提出了钻孔桩+对撑支护、桩锚支护、土钉墙支护三种多断面支护方案,并对三者进行了对比分析,以选择出既经济合理,又安全可靠的支护形式。

Combining with geological conditions and surrounding environment conditions of new-built engineering of core section of east Tiedong road in Zhuzhou city, the paper puts forward three kinds of multi-section supporting scheme including bored pile ＋ symmetrical support, pile an-chor support and soil nailing wall support, and makes a comparative analysis, with a view to select economic, rational and safe and reliable sup-port form.