土岩结合地区地铁工程施工竖井断面形式及支护参数优化研究  

Vertical Shaft Section Form and Supporting Parameters Optimization in Subway Construction in Soil-rock Combination Area

作　　者：胡志耀 HU Zhiyao(China Railway Liuyuan Group Co.,Ltd.,Tianjin 300308,China)

机构地区：[1]中铁第六勘察设计院集团有限公司,天津300308

出　　处：《水利与建筑工程学报》2019年第2期118-123,共6页Journal of Water Resources and Architectural Engineering

摘　　要：针对目前国内暗挖地铁工程施工竖井断面形式及支护参数设计多以工程类比法为主,设计安全系数偏大,没有充分利用支护与围岩自身性能的现状这一问题,以某土岩结合地区地铁工程为背景,选取多个竖井进行理论分析,通过数值方法对不同侧压荷载作用下,不同断面在不同深度位置受力情况进行分析研究。研究结果表明:竖井的断面形式及支护参数应根据其地质条件不同,结合地质条件下结构受力、使用功能进行综合比选进行确定。The design of vertical shaft section and supporting parameters of metro construction is mainly based on the engineering analogy method,and the design safety factor is relatively large.Besides,the performance of supporting and surrounding rock itself are not fully utilized.Focusing on the problem mentioned above and based on the subway project in one region geologically composed of soil and rock,in this paper multiple construction shafts are selected for theoretical analysis.Through numerical simulation,the analysis and research are mainly conducted on the stress of different sections in different depth under effects of different lateral loads.It is shown that reasonable sections and supporting parameters of the constructed shafts should be determined by the comprehensive comparison and selection of structure stress and using purpose based on the geological conditions.

关 键 词：施工竖井 理论分析 数值计算 合理断面 优化支护 

分 类 号：TU37[建筑科学—结构工程]