基于经济安全系数比的隧道穿越超浅埋大偏压段方案优化研究

钟祖良; 刘新荣; 方金炳; 李小勇; 廖静薇

doi:10.13204/j.gyjz201302016

基于经济安全系数比的隧道穿越超浅埋大偏压段方案优化研究

doi: 10.13204/j.gyjz201302016

1.
1. 重庆大学土木工程学院,重庆400045;
2.
2. 山地城镇建设与新技术教育部重点实验室重庆大学,重庆400045

基金项目:

国家自然科学基金项目(51108485);高等学校博士学科点专项科研基金项目(20110191120033);重庆市科委自然科学基金计划资助项目(CSTC,2009BB6350)

详细信息

作者简介:
钟祖良,男,1980年出生,博士,副教授. 电子信箱:haiou983@126.com

中图分类号: U455.4
计量
- 文章访问数: 102
- HTML全文浏览量: 18
- PDF下载量: 63
- 被引次数: 11
出版历程
- 收稿日期: 2012-05-28
- 刊出日期: 2013-02-20

OPTIMIZATION RESEARCH ON TUNNEL CROSSING SCHEME THROUGH ULTRA-SHALLOW AND LARGE-BIAS SECTIONS BASED ON ECONOMIC SAFETY COEFFICIENT RATIO

1.
1. Civil Engineering College of Chongqing University,Chongqing 400045,China;
2.
2. Key Laboratory of New Technology for Construction of Cities in Mountain Area(Chongqing University),Ministry of Education,Chongqing 400045,China

摘要

摘要: 在黄土高原地区,由于沟壑众多,在隧道选线过程中出现了一种最不利的地形条件,即隧道需穿越超浅埋大偏压地段。为了研究其经济、安全、可靠的穿越方案,提出经济安全系数比的概念及计算原理。对隧道穿越超浅埋大偏压段的方案先进行设计,然后采用有限元强度折减法和相关定额计算出各方案的经济安全系数比,并结合数值模拟方法对3种典型穿越方案下的隧道围岩应力、洞室变形和初期支护应力等进行计算分析。经过综合对比,得出按反压法设计的穿越方案最优。该方案既有利于超浅埋大偏压隧道的整体稳定,又有利于减少工程造价。
- 隧道 /
- 超浅埋大偏压段 /
- 穿越方案 /
- 经济安全系数比
Abstract: There are many gullies in the loess plateau region.A most unfavorable topographic condition occured when tunnels passed through the gully region.It meaned that tunnels needed to pass through the ultra-shallow and large-bias sections.In order to obtain the economic and safe crossing scheme,the conception of economic safety coefficient ratio and its calculation principle was brought forward.Firstly,the tunnel crossing schemes through ultra-shallow and large-bias sections were designed.The economic safety coefficient ratio of each tunnel crossing scheme was calculated by the methods of strength reduction method and related quotas.Besides,the tunnel's rock stress,deformations and the primary support's stress were simulated and compared among the three tunnel crossing schemes.Finally,the counterweight fill method was considered to be the best crossing scheme,with which the ultra-shallow and large-bias tunnel was in the steady state during the construction period.Good results were achieved so as to offer reference for the future similar projects.
- tunnel /
- ultra-shallow and large-bias section /
- crossing scheme /
- economic safety coefficient ratio

HTML全文

参考文献(10)

[2] 肖涛,李春峰.偏压隧道冒顶现场监控量测研究[J].公路交通科技,2011(6):195-199.

许建武,文熠,黄赞华.基于有限差分法软弱围岩偏压隧道动态开挖数值分析[J].公路交通科技,2011(4):196-201.

[3] 钟祖良,刘新荣,吴强.流固耦合作用下马垭口隧道塌方机理及其灾害治理研究[J].工程勘察,2011,(7):18-22.

[4] 沈春儒,蒋斌松.桦木沟隧道围岩偏压稳定性研究[J].公路交通科技,2011(9):164-166.

[5] 钟祖良,刘新荣,王道良,等.桃树垭隧道底鼓发生机理与防治技术研究[J].岩土工程学报,2012,34(3):471-476.

[6] 钟祖良,刘新荣,刘元雪,等.黄土连拱隧道动态施工围岩损伤局部化研究[J].岩土力学,2012,33(2):611-616.

[7] 李树忱,李术才,徐帮树.隧道围岩稳定分析的最小安全系数法[J].岩土力学,2007,28(3):549-554.

[8] 郑颖人,邱陈瑜,宋雅坤,等.土质隧洞围岩稳定性分析与设计计算方法探讨[J].后勤工程学院学报,2009,285(3):1-9.

[9] 山西省交通规划勘察设计院.山西省临县至离石高速公路两阶段施工图设计[R].太原:山西省交通规划勘察设计院,2009.

[10] JTG D702004公路隧道设计规范[S].

施引文献

期刊类型引用(5)

1.	李志强，李堰江，孙玉洁，张宏家，祝帆. 粘贴钢板加固偏压H型钢长柱承载力试验研究. 建筑结构. 2024(10): 59-64 . 百度学术
2.	吴晨煊，幸坤涛，李胜林，冯绍攀. 带缺陷H型钢栓焊拼接节点承载力评估及受限作用下加固技术研究. 工业建筑. 2022(10): 176-181+194 . 本站查看
3.	王元清，蒋立，戴国欣，张天申，石永久. 负载下焊接加固钢结构压弯构件的设计方法建议. 工业建筑. 2017(02): 13-17 . 本站查看
4.	李尚飞，周建男，刘启超. 某多层钢结构商住楼功能改造加固设计研究. 华北地震科学. 2017(S1): 26-29 . 百度学术
5.	蒋立，王元清，戴国欣，张天申，石永久. 焊接加固热作用对工形截面压弯钢构件承载性能的影响. 土木建筑与环境工程. 2016(04): 96-107 . 百度学术