兰州市某深基坑支护设计及监测研究分析

任永忠; 朱彦鹏; 周勇

兰州市某深基坑支护设计及监测研究分析 English Version

任永忠^1,2,
朱彦鹏^1,2,
周勇^1,2

(1.兰州理工大学甘肃省土木工程防灾减灾重点实验室，甘肃兰州 730050；2. 兰州理工大学西部土木工程防灾减灾教育部工程研究中心，甘肃兰州 730050)

详细信息

作者简介:
任永忠(1986– )，男，甘肃平凉人，博士研究生，主要从事黄土地区柔性支挡结构及滑坡泥石流的分析与研究。

中图分类号: TU476
计量
- 文章访问数: 1234
- HTML全文浏览量: 1
- PDF下载量: 632
出版历程
- 收稿日期: 2012-11-12
- 发布日期: 2012-11-12

Design and monitoring of bracings for a deep foundation pit in Lanzhou

(1. Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province, Lanzhou University of Technology, Lanzhou 730050, China; 2. Western Engineering Research Center of Disaster Mitigation in Civil Engineering of Ministry of Education, Lanzhou University of Technology, Lanzhou, 730050, China)

摘要

摘要: 以兰州市庙滩子某一深基坑工程为背景，论述了排桩预应力锚杆在深基坑工程中的设计要点，同时对施工过程中桩顶及桩身位移进行了实时监测，并且利用有限元软件PLAXIS，采用HSS土体本构模型对此工程进行了数值验证。监测及数值模拟分析表明：采用排桩预应力锚杆支护，深基坑的开挖对邻近建筑物影响很小，此支护形式能够有效的限制基坑的侧向位移，同时数值模拟结果与监测数据基本吻合，表明HSS土体本构模型较适合含有卵石、泥岩地质条件下的数值分析。
- 深基坑 /
- 支护设计 /
- 排桩预应力锚杆 /
- 监测分析 /
- 数值模拟
Abstract: Taking a deep foundation pit in Miaotanzi, Lanzhou as are example, the design highlights of pile-prestressed anchor in deep excavations are discussed, and real-time monitoring of pile displacements of top and piles during the process of construction is carried out. By using the finite element software PLAXIS, HSS soil constitutive model is adopted for numerical verification. The monitoring and numerical simulation analysis show that supported by the pile-prestressed anchor, excavation of deep foundation pit has little effect on the adjacent buildings. This kind of bracing can effectively limit the lateral displacement of deep foundation pit. The numerical results agree with the monitoring data. The HSS soil constitutive model is more suitable for numerical analysis of foundations containing pebbles and mudstone geological conditions.
- deep foundation pit /
- bracing design /
- pile-prestressed anchor /
- monitoring analysis /
- numerical simulation

HTML全文

参考文献(11)

[1]	吴文, 徐松林, 周劲松, 等. 深基坑桩锚支护结构受力和变形特性研究[J]. 岩石力学与工程学报, 2001, 20(3): 399–402. (WU Wen, XU Song-lin, ZHOU Jin-song, et a1. Studies of force and deformation properties considering pile-anchor-soil interaction in deep pits[J]. Chinese Journal of Rock Mechanics and Engineering, 2001, 20(3): 399–402. (in Chinese))
[2]	马平, 秦四清, 张勇, 等. 深基坑桩锚支护体系主动区土压力试验研究[J]. 工程地质学报, 2006, 14(2): 245–248. (MA Ping, QIN Si-qing, ZHANG Yong, et al. In-situ test on active earth pressure zone in piles and anchors supporting system for deep foundation pit[J]. Journal of Engineering Geology, 2006, 14(02): 245–248. (in Chinese))
[3]	时伟, 刘继明, 章伟. 深基坑桩锚支护体系水平位移试验研究[J]. 岩石力学与工程学报, 2003, 22(增刊1): 2355–2358. (SHI Wei, LIU Ji-ming, ZHANG Wei. Testing study on horizontal displacement of anchor-pile bracing structure for deep foundation pit[J]. Chinese Journal of Rock Mechanics and Engineering, 2003, 22(S1): 2355–2358. (in Chinese))
[4]	JGJ 120—99 建筑基坑支护技术规程[S]. 北京: 中国建筑工业出版社, 1999. (JGJ 120—99 Technical specification for retaining and protection of building foundation excavation[S]. Beijing: China Architecture and Building Press, 1999. (in Chinese))
[5]	JGJ 167—2009湿陷性黄土地区建筑基坑工程安全技术规程[S]. 北京: 中国建筑工业出版社, 2009. JGJ 167—2009 Technical specifications for safe retaining and protection of building foundation excavation engineering in collapsible loess regions[S]. Beijing: China Architecture and Building Press, 2009. (in Chinese))
[6]	陈肇元, 崔京浩. 土钉支护在基坑工程中的应用[M]. 2版. 北京: 中国建筑工业出版社, 2000. (CHEN Zhao-yuan, CUI Jing-hao. Application of soil nailing in excavation engineering[M]. 2nd ed. Beijing: China Architecture and Building Press, 2000. (in Chinese)).
[7]	朱彦鹏, 王秀丽, 周勇. 支挡结构设计计算手册[M]. 北京: 中国建筑工业出版社, 2008. (ZHU Yan-peng, WANG Xiu-li, ZHOU Yong. Retaining structure design and calculating instructions[M]. Beijing: China Architecture and Building Press, 2008. (in Chinese))
[8]	GB 50010—2010 混凝土结构设计规范[S]. 北京: 中国建筑工业出版社, 2010. (GB 50010—2010 Code for design of concrete structures[S]. Beijing: China Architecture and Building Press, 2010. (in Chinese)))
[9]	ZHU Yan-peng, WANG Xiu-li. Analysis and design of pile-prestressed anchor supporting structure[J]. Progress in Mechanics of Structure and Materials, 2006: 541–547.
[10]	GB 50330—2002建筑边坡工程技术规范[S]. 北京: 中国建筑工业出版社, 2002. (GB 50330—2002 Technical code for building slope engineering[S]. Beijing: China Architecture and Building Press, 2002. (in Chinese))
[11]	北京金土木软件技术有限公司, PLAXIS 岩土工程软件使用指南[M]. 北京: 人民交通出版社, 2010. (Civil King Software Technology Co, Ltd. PLAXIS geotechnical engineering software guide[M]. Beijing: China Communication Press, 2010. (in Chinese))

施引文献

资源附件(0)

计量

文章访问数: 1234
HTML全文浏览量: 1
PDF下载量: 632
被引次数: 0

兰州市某深基坑支护设计及监测研究分析 English Version

作者简介: 任永忠(1986– )，男，甘肃平凉人，博士研究生，主要从事黄土地区柔性支挡结构及滑坡泥石流的分析与研究。

计量

出版历程

Design and monitoring of bracings for a deep foundation pit in Lanzhou

计量

出版历程

目录

作者简介:
任永忠(1986– )，男，甘肃平凉人，博士研究生，主要从事黄土地区柔性支挡结构及滑坡泥石流的分析与研究。