[1]李辉,杜莎芳,李恒,等.奔龙坪偏压连拱隧道施工方案比选及监测分析[J].西安建筑科技大学学报(自然科学版),2017,(04):485-491.[doi:10.15986/j.1006-7930.2017.04.004]
 LI HuiDU ShafangLI HengSONG ZhanpingSHI Botai.Construction sequence comparison and numerical analysis of Benlongping shallow and unsymmetrical pressure multi arch tunnel[J].J. Xi’an Univ. of Arch. & Tech.(Natural Science Edition),2017,(04):485-491.[doi:10.15986/j.1006-7930.2017.04.004]
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奔龙坪偏压连拱隧道施工方案比选及监测分析()
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西安建筑科技大学学报(自然科学版)[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2017年04期
页码:
485-491
栏目:
出版日期:
2017-09-10

文章信息/Info

Title:
Construction sequence comparison and numerical analysis of Benlongping shallow and unsymmetrical pressure multi arch tunnel
文章编号:
1006-7930(2017)04-0485-07
作者:
李辉1杜莎芳1李恒1宋战平1师伯泰2
(1. 西安建筑科技大学 土木工程学院,陕西 西安 710055 ;2. 中铁九局集团有限公司,辽宁 沈阳 110013)
Author(s):
LI Hui1DU Shafang1LI Heng1SONG Zhanping1SHI Botai2
(1. School of Civil Engineering, Xian Univ . of arch . & Tech ., Xian 710055, China; 2. China Railway No .9 Group Co, Ltd, Shenyang 110013, China)
关键词:
双连拱隧道浅埋偏压数值试验施工方案现场监测
Keywords:
double-arch tunnel shallow and unsymmetrical pressure numerical simulation construction sequence monitoring data
分类号:
U452
DOI:
10.15986/j.1006-7930.2017.04.004
文献标志码:
A
摘要:
针对在建龙瑞高速公路奔龙坪浅埋傍山大断面双连拱隧道施工稳定性问题,基于数值仿真模拟试验,分析了大断面双连拱隧道不同施工方案引起的隧道-支护结构位移及应力的变化,研究了不同施工步序参数条件下的隧道拱顶沉降、净空收敛位移及连拱隧道中隔墙水平位移的变化特性;分析了不同施工步序参数条件下的隧道支护结构应力状况的变化.基于隧道-支护结构位移及应力的变化特点,推荐了隧道最优的施工方案及施工步序参数.跟踪隧道施工进行的现场监测表明:奔龙坪隧道采用“先浅埋侧而后深埋侧隧道,先、后行隧道开挖距离相差2倍隧道跨度”的施工方案合理、可行,保证了隧道的施工的安全
Abstract:
In the tunnel and underground engineering construction, different construction sequence will cause a huge difference in the tunnel distortion and stress characteristics . For the construction stability problems of Long Rui Highway under construction, Benlongping shallow hillside large cross section double arch tunnel, based on numerical simulation testing, the changes of the support structure displacement and stress of the large span of double -arch tunnel in different construction program are analyzed,the crown settlement, convergence clearance displacement and changing characteristics of the level of the middle partition wall with construction step sequence under different conditions of construction step sequence parameters are analyzed. The variation of tunnel support structure under different conditions of construction step sequence parameters is studied . Based on the variation characteristics of the displacement and stress of the tunnel support structure, the optimal construction scheme of the Ben Long Ping shallow double -arch tunnels under unsymmetrical pressure is recommended, and the construction step sequence parameters are determined. The monitoring of the displacement and stress of the track tunnel construction show that the construction scheme of the shallow double -arch tunnels under unsymmetrical pressure with “first shallow buried tunnel side after the deep side of the tunnel, the excavation distance of the former tunnel and later tunnel difference of 2 times the span of the tunnel ” is reasonable and feasible, so the safety of the construction of shallow buried and unsymmetrical large section arch tunnel is guaranteed

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备注/Memo

备注/Memo:
收稿日期:2016-08-06修改稿日期:2017-07-15
基金项目:国家自然科学基金(51578447)
第一作者:李辉(1963-),女,学士,副教授,主要从事岩土工程领域的教学与科研工作. E -mail:lihyt@xauat.edu.cn
通讯作者:宋战平(1974-),男,博士,教授,主要从事岩土工程领域的教学和科研工作.E-mail:songzhpyt@xauat.edu.cn
更新日期/Last Update: 2017-09-11