[1]卫守峰.黄土地区地铁竖井转横通暗挖施工稳定性分析[J].西安建筑科技大学学报(自然科学版),2020,52(03):366-375.[doi:10.15986/j.1006-7930.2020.03.009]
　WEI Shoufeng.Optimization analysis of tunnel construction methods through cross aisle from subway shaft based on numerical test analysis in loess stratum[J].J. Xi’an Univ. of Arch. & Tech.(Natural Science Edition),2020,52(03):366-375.[doi:10.15986/j.1006-7930.2020.03.009]
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黄土地区地铁竖井转横通暗挖施工稳定性分析()
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西安建筑科技大学学报（自然科学版）[ISSN:1006-7930/CN:61-1295/TU]

卷:
52
期数:
2020年03期
页码:
366-375
栏目:
出版日期:
2020-06-30

文章信息/Info

Title:
Optimization analysis of tunnel construction methods through cross aisle from subway shaft based on numerical test analysis in loess stratum
文章编号:
1006-7930(2020)03-0366-10
作者:
卫守峰1; 2
(1.中国铁建大桥工程局集团有限公司,天津 300300; 2.西安建筑科技大学 陕西省岩土与地下空间工程重点实验室,陕西 西安 710055)
Author(s):
WEI Shoufeng1; 2
(1.Chinese Railway Bridge Engineering Bureau Group Co.Ltd., Tianjin 300300, China; 2.Key Laboratory of Geotechnical and Underground Space Engineering of Shaanxi Province, Xi’an Univ. of Arch. & Tech., Xi’an 710055, China )
关键词:
地铁工程;  竖井转横通道;  施工方法;  黄土地层;  数值模拟
Keywords:
subway engineering;  cross aisle from subway shaft;  construction method;  loess strata;  numerical simulation
分类号:
TU 443
DOI:
10.15986/j.1006-7930.2020.03.009
文献标志码:
A
摘要:
针对地铁暗挖采用的竖井转横通道施工中采用的先竖井封底,再通过井内临时搭设的施工平台进行竖井转横通道施工的“先竖井后横通”施工方案存在的施工周期长、安全隐患大的问题,依托在建的西安地铁五号线区间黄土隧道工程的施工,进行了竖井转横通道施工方案的数值试验研究,分析了黄土地层中“先竖井后横通”施工和竖井施工到横通道高程后先转入横通道施工,在横通道具备作业空间后进行竖井下部开挖的“竖井-横通并行”施工时竖井-横通道结构及地层的变形、受力特点,对比研究两种施工方案引起的地表沉降及围岩塑性区的变化.数值分析表明,“竖井-横通并行”施工时,马头门横向收敛位移和竖井靠近马头门一侧井壁的支护结构应力较“先竖井后横通”施工方案小约14%以上,因此对稳定性较好的黄土地层,建议采用“竖井-横通并行”施工方案.
Abstract:
The safety control of excavation through cross aisle from subway shaft is the key technology in building urban metro.The old method applied is to excavate the shaft to design elevation position and then to excavate the cross aisle.Owing to the long excavating time and too much space taken,the paper takes finite element analysis software to analyze a new method,i.e. to excavate the shaft to the temporary inverted arch elevation position in superior step of the cross aisle and then to excavate the shaft based on successfully using the last method in the construction through cross aisle from subway shaft of Xian rail traffic line 5 in the first phase.The paper analyzes the consolidation safety in two different ways by large finite element analysis Software.Results show that the surface and construction about the cross aisle show the same results after the whole excavation in loess stratum.And the new way can get a better result,about 30%, at controlling the crosswise strain of the horsehead and the mechanical conditions of sidewall, so that the tunnels were more stable.Comparative analysis of field monitoring results prove economic, security and feasibility of “cross-channel parallel shaft construction” program.

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备注/Memo

备注/Memo:
收稿日期:2019-10-23 修改稿日期:2020-05-11
基金项目:国家自然科学基金资助项目(51578447); 陕西省建设厅科技发展计划项目(2019-k39)
第一作者:卫守峰(1976-),男,硕士,高级工程师,主要从事隧道与地下工程施工管理方面的工作.E-mail:214452111@qq.com
更新日期/Last Update: 2020-07-30