西宁地区常用基坑支护结构对比分析

黄雪峰; 杨校辉; 朱彦鹏; 张世径

西宁地区常用基坑支护结构对比分析 English Version

(1.兰州理工大学土木工程学院，甘肃兰州 730050；2. 解放军后勤工程学院军事建筑工程系，重庆 401311)

详细信息

作者简介:
黄雪峰(1960– )，男，博士，教授，硕士生导师，1982年毕业于成都理工大学工程地质专业，主要从事特殊土与非饱和土、桩基工程等方面的教学与研究工作。

中图分类号: TU47
计量
- 文章访问数: 1028
- HTML全文浏览量: 0
- PDF下载量: 525
出版历程
- 收稿日期: 2012-11-12
- 发布日期: 2012-11-12

Comparative analysis of common retaining structures in Xining area

(1. School of Civil Engineering, Lanzhou University of Technology, Lanzhou 730050, China; 2. Department of Architectural Engineering，Logistical Engineering University of PLA, Chongqing 401311, China)

摘要

摘要: 针对深基坑工程设计和施工现状，通过近年西宁地区基坑支护工程实践，对比分析了本地区常用的4种支护结构的作用机理、适用范围、设计现状及存在的不足，并为今后进一步研究指出了方向。实践证明：在西宁地区，当基坑周边环境允许放坡、深度不大于12 m、地下水位较低且经济性要求较高时，应首选土钉墙支护；当基坑周边环境允许、深度大于12 m、对位移控制要求较严、地下水位较高时，应优先选用复合土钉墙或框架预应力锚杆支护，尤其作为永久性支护结构且考虑美观、造价时，框架预应力锚杆优于复合土钉墙；当大型复杂深基坑周边环境狭小、位移要求严格、锚杆长度或桩径选择受限、地质情况复杂时，选择上部土钉下部桩锚联合支护较合理。最后，结合目前西宁地区大型复杂深基坑工程实例，对其应用情况进行了说明。
- 非饱和黄土 /
- 深基坑工程 /
- 支护结构形式 /
- 方案比选
Abstract: Based on the design and construction status of deep excavations and engineering practices of supporting and retaining structures in Xining area in recent years, the mechanism, application scope, design status and shortcomings of 4 kinds of supporting and retaining structures are compared and analyzed for the future research direction. The practices show that when the surrounding environment of excavations allows step-slope, the depth is not more than 12 m, the groundwater level is low and the economic requirements are high, soil-nailing wall should be used as the first choice. When the surrounding environment of excavations allows step-slope, the depth is more than 12 m, the requirements of displacement are strict and the groundwater level is high, composite soil-nailing wall or grillage with prestressed anchors should be used as the first choice. Considering beauty and cost, the grillage with prestressed anchors is better than the composite soil-nailing wall, especially as a permanent support. When the surrounding environment of large complex deep excavations is narrow, the requirements of displacement are strict, the anchorage length or pile diameter selection is limited and the geological conditions are complex, it is more reasonable to choose the combined support of soil-nailing wall at the upper part and anchor pile at the lower part. Finally, combined with the current large complex examples of deep excavations in Xining, the relevant applications are illustrated.
- unsaturated loess /
- deep excavation /
- retaining mode /
- scheme optimization

HTML全文

参考文献(14)

[1]	刘祖典. 黄土力学与工程[M]. 西安: 陕西科技出版社. 1996. (LIU Zu-dian. Mechanics and engineering of loess[M]. Xi'an: Shaanxi Science and Technology Press, 1996. (in Chinese))
[2]	王曙光. 基坑支护事故处理经验录[M]. 北京: 机械工业出版社, 2005. (WANG Shu-guang. Foundation pit accident treatment experience record[M]. Beijing: Mechanical Industry Press, 2005. (in Chinese))
[3]	孔令伟, 陈正汉. 特殊土与边坡研究进展综述报告[C]// 第十一届全国土力学及岩土工程学术论文摘要集. 兰州, 2011. (KONG Ling-wei, CHEN Zheng-han. General report of research progress on special soil and slop[C]// The set of academic paper of the national soil mechanics and geotechnical engineering in 11 th. Lanzhou, 2011. (in Chinese))
[4]	朱彦鹏, 王秀丽, 于劲, 等. 悬臂式支护桩内力的试验研究[J]. 岩土工程学报, 1999, 21(2): 236–239. (ZHU Yan-peng, WANG Xiu-li, YU Jin. Experimental study on internal force of cantilever retaining piles[J]. Chinese Journal of Geotechnical Engineering, 1999, 21(2): 236–239. (in Chinese))
[5]	朱彦鹏, 叶帅华, 莫庸. 西宁某基坑事故分析与处理[M]//基坑工程实例3. 北京: 中国建筑工业出版社, 2010, 263–270. (ZHU Yan-peng, YE Shuai-hua, MO Yong. A foundation pit accident analysis and processing of Xining[M]// Engineering Examples of Deep Foundation Pit (Part 3). Beijing: China Architecture & Building Press, 2010, 263–270. (in Chinese))
[6]	黄雪峰, 李佳, 崔红, 等. 非饱和原状黄土垂直高边坡潜在土压力原位测试试验研究[J]. 岩土工程学报. 2010, 32(4): 500–506. (HUANG Xue-feng, LI Jia, CUI Hong, et al. Distribution characteristics of earth pressure for unsaturated intact loess[J]. Chinese Journal of Geotechnical Engineering, 2010, 32(4): 500–506. (in Chinese))
[7]	张明聚, 郭忠贤. 土钉支护工作性能的现场测试研究[J]. 岩土工程学报. 2001, 23(3): 319–323. (ZHANG Ming-ju，GUO Zhong-xian. Research on behaviors of soil nailing by field test[J]．Chinese Journal of Geotechnical Engineering, 2001, 23(3): 319–323. (in Chinese))
[8]	刘国彬, 王卫东. 基坑工程手册[M]. 2版. 北京: 中国建筑工业出版社, 2009. (LIU Guo-bin, WANG Wei-dong. Excavation engineering manual[M]. 2nd ed. Beijing: China Architecture & Building Press, 2009. (in Chinese))
[9]	曾宪明, 林大路, 李世民, 等. 锚固类结构杆体临界锚固长度问题综合研究—国内相关研究进展[J]. 预应力技术, 2009, 1: 5–11. (ZENG Xian-ming, LIN Da-lu, LI Shi-min, et al. Comprehensive research on critical anchor length problem of anchor rod body class structure—Domestic related research progress[J]. Prestressed Technique, 2009, 1: 5–11. (in Chinese))
[10]	程良奎. 岩土锚固研究与新进展[J]. 岩石力学与工程学报, 2005, 24(21): 3803–3810. (CHENG Liang-kui. Research and new progress in ground anchorage[J]. Chinese Journal of Rock Mechanics and Engineering, 2005, 24(21): 3803–3810. (in Chinese))
[11]	周勇, 朱彦鹏. 框架预应力锚杆柔性支护结构坡面水平位移影响因素[J]. 岩土工程学报, 2011, 33(3): 470–476. (ZHOU Yong, ZHU Yan-peng. Influencing factors of horizontal displacement of wall facing of grillage flexible supporting structure with prestressed anchors[J]. Chinese Journal of Geotechnical Engineering, 2011, 33(3): 470–476. (in Chinese))
[12]	王立明, 高广运, 郭院成. 单支点桩锚支护结构的侧移计算[J]. 地下空间与工程学报, 2005, 1(4): 510–513. (WANG Li-ming, GAO Guang-yun, GUO Yuan-cheng. Lateral calculation on single pile anchor supporting structure[J]. Chinese Journal of Underground Space and Engineering, 2005, 1(4): 510–513. (in Chinese))
[13]	杨敏, 冯又全, 王瑞样. 深基坑支护结构的力学分析及与实测结果的比较[J]. 建筑结构学报, 1999, 20(2): 68–77. (YANG Min, FENG You-quan, WANG Rui-xiang. Comparison with the mechanical analysis and the test result of deep foundation pit bracing structure[J]. Chinese Journal of Building Structures, 1999, 20(2): 68–77. (in Chinese))
[14]	何建明, 白世伟. 深基坑排桩—圈梁支护结构协同作用研究[J]. 岩土力学, 1997, 18(3): 41–46. (HE Jian-ming, BAI Shi-wei. Synergy research on deep foundation pit row pile-ring beam supporting structure[J]. Rock and Soil Mechanics, 1997, 18(3): 41–46. (in Chinese))