长江漫滩高承压水地基地连墙承载特性现场试验研究

doi:10.13722/j.cnki.jrme.2016.0047

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (333 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要针对长江漫滩高承压水地基，以南京青奥轴线—梅子洲过江通道基坑为依托工程，开展格栅地连墙和普通地连墙承载特性的现场试验研究，分别测试研究其墙顶水平位移、墙体深层水平位移、地表沉降、支撑轴力等随基坑开挖及时间的变化规律。主要结论如下：(1) 墙顶水平位移在支撑设置后均有回弹变形趋势，变形受支撑架设、预加轴力及拆除影响较大；(2) 2种墙体深层水平位移随深度均呈“胀肚型”变化趋势，两者最大侧移均发生在埋深中上部区域；(3) 格栅地连墙在基坑开挖初期，地表先小幅隆起，普通地连墙无隆起现象，且沉降明显偏大，两者随距墙体距离增大沉降逐步变小，且不同距离处差异沉降在基坑开挖后期均有增大趋势。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	王新泉1
	崔允亮1
	张世民1
	史庆涛2
	李兵2

关键词 ：地基基础, 格栅地连墙, 水平位移, 地表沉降, 支撑轴力

Abstract：The field test was carried out to the foundation pit at Mei-zi-zhou river-crossing tunnel on Metro Line of Nanjing Youth Olympic Games. The lattice shaped and conventional diaphragm walls were constructed in the ground with high pressure water at Yangtze River floodplain. The variations of lateral displacement at wall top，the horizontal displacement along wall depth，the surface settlement and the axial forces of supporting with the excavation of foundation pit and time were measured and studied respectively. The lateral displacement at the wall top rebounds after the setup of supporting，which is mainly influenced by the supporting installation，pre-axial force and demolition. The deep lateral displacements at the lattice shaped and conventional diaphragm walls tend to form a ‘bulging belly? shape，and the maximum deep lateral displacement on both kinds of walls can be found in the middle-upper region of the buried depth. In the early stage of pit excavation，there is a slight surface heave in the lattice shaped diaphragm walls，whereas there is no surface heave but a large settlement in the conventional diaphragm walls. However，the ground settlements are gradually decreased with the increase of the distance away from the walls. The differential settlements away from the walls tend to increase in the late stage of foundation pit excavation.

Key words： foundation lattice shaped diaphragm walls horizontal displacement surface settlements axial forces of support

引用本文:

王新泉1，崔允亮1，张世民1，史庆涛2，李兵2. 长江漫滩高承压水地基地连墙承载特性现场试验研究[J]. 岩石力学与工程学报, 2017, 36(3): 773-780.
WANG Xinquan 1，CUI Yunliang1，ZHANG Shimin1，SHI Qingtao2，LI Bing2. Field test on bearing characteristics of diaphragm walls under high water pressure at floodplain of Yangtze River. , 2017, 36(3): 773-780.

链接本文:

http://www.rockmech.org/CN/10.13722/j.cnki.jrme.2016.0047 或 http://www.rockmech.org/CN/Y2017/V36/I3/773

[1]	孙长军，张顶立，刘井学，等. 北京地铁车站地连墙支护结构受力变形特性研究[J]. 岩土工程学报，2015，37(1)：78-83.(SUN Changjun，ZHANG Dingli，LIU Jingxue，et al. Mechanical and deformation characteristics of diaphragm wall system of Beijing metro station[J]. Chinese Journal of Geotechnical Engineering，2015，37(1)：78-83.(in Chinese))
[2]	KUNG G T C，HSISO E C L，JUANG C H. Evaluation of a simplified small-strain soil model for analysis of excavation-induced movements[J]. Canadian Geotechnical Journal，2007，44(6)：726-736. " target="_blank">
[4]	LONG M. Database for retaining wall and ground movements due to deep excavations[J]. Journal of Geotechnical and Geoenvironmental Engineering，ASCE，2001，127(3)：203-224. " target="_blank">
[6]	PECK R B. Deep excavation and tunneling in soft ground[C]// Proceedings of the 7th International Conference on Soil Mechanics and Foundation Engineering. Mexico：[s. n.]，1969：201-290. " target="_blank">
[10]	廖少明，魏仕锋，谭勇，等. 苏州地区大尺度深基坑变形性状实测分析[J]. 岩土工程学报，2015，37(3)：458-469.(LIAO Shaoming，WEI Shifeng，TAN Yong，et al. Field performance of large-scale deep excavations in Suzhou[J]. Chinese Journal of Geotechnical Engineering，2015，37(3)：458-469.(in Chinese))
[20]	顾蒙娜，庄海洋，刘雪珠，等. 深厚软弱场地地铁车站基坑变形规律统计分析[J]. 地下空间与工程学报，2015，11(增1)：172-176. (GU Mengna，ZHUANG Haiyang，LIU Xuezhu，et al. Statistical analysis on the deformation laws of a foundation pit for subway station built in deep soft site[J]. Chinese Journal of Underground Space and Engineering，2015，11(Supp.1)：172-176.(in Chinese))
[7]	ANDREW J W，YOUSSEF M A. Analysis of deep excavation in boston[J]. Journal of Geotechnical Engineering，1993，119(1)：69-89. " target="_blank">
[17]	吴九江，程谦恭，文华，等. 软土地基格栅式地下连续墙与群桩桥梁基础竖向承载性状对比模型试验研究[J]. 岩土工程学报，2014，36(9)：1 733-1 744. (WU Jiujiang，CHENG Qiangong，WEN Hua，et al. Vertical bearing behaviors of lattice shaped diaphragm walls and group piles as bridge foundations in soft soils[J]. Chinese Journal of Geotechnical Engineering，2014，36(9)：1 733-1 744.(in Chinese))
[5]	CLOUGH G W，ANDO?ROURKE T D. Construction induced movements of in situ walls[C]// Proceedings of ASCE Conference on Design and Performance of Earth Retaining Structures. New York：Geotechnical Special Publication No. 25，ASCE，1990：439-470. " target="_blank">
[15]	刘勇，冯志，黄国超，等. 北京地铁工程深基坑围护结构变形研究[J]. 地下空间与工程学报，2009，5(2)：329-335.(LIU Yong，FENG Zhi，HUANG Guochao，et al. The study in predicting the deformation of supporting structure for deep foundation pit[J]. Chinese Journal of Underground Space and Engineering，2009，5(2)：329-335.(in Chinese))
[3]	SCHUSTER M，KUNG G T C，JUANG C H，et al. Simplified model for evaluating damage potential of building adjacent to a braced excavation[J]. Journal of Canadian Geotechnical and Geoenvironmental Engineering，ASCE，2009，135(12)：1 823-1 835. " target="_blank">
[13]	刘念武，龚晓南，楼春晖. 软土地基中地下连续墙用作基坑维护的变形特性分析[J]. 岩石力学与工程学报，2014，33(增1)：2 707-2 712.(LIU Nianwu，GONG Xiaonan，LOU Chunhui，et al. Deformation characteristics analysis of diaphragm wall for foundation pit support in soft soil[J]. Chinese Journal of Rock Mechanics and Engineering，2014，33(Supp.1)：2 707-2 712.(in Chinese)). " target="_blank">
[8]	WANG J H，XU Z H，WANG W D. Wall and ground movements due to deep excavations in Shanghai soft soils[J]. Journal of Geoenvironmental Engineering，2010，136(7)：985-994. " target="_blank">
[9]	TAN Y，WEI B. Observed behaviors of a long and deep excavation construction by cut-and-cover technique in Shanghai soft clay[J]. Journal of Geotechnical and Geoenvironmental Engineering，2012，138(1)：69-88.
[12]	徐中华，王建华，王卫东. 软土地区采用灌注桩围护的深基坑变形性状研究[J]. 岩土力学，2009，30(5)：1 362-1 366.(XU Zhonghua， WANG Jianhua，WANG Weidong. Deformation behavior of deep excavations retained by bored pile wall in soft soil[J]. Rock and Soil Mechanics，2009，30(5)：1 362-1 366.(in Chinese)) " target="_blank">
[14]	张顶锋. 北京东部地铁车站明挖基坑开挖变形规律分析[J]. 铁道建筑，2015，(10)：101-104.(ZHANG Dingfeng. Analysis on the deformation law of foundation pit for metro station in Beijing east area[J]. Railway Engineering，2015，(10)：101-104.(in Chinese)) " target="_blank">
[16]	胡文杰，徐洪钟. 城市隧道深基坑开挖引起的地下连续墙墙体变形特性研究[J]. 南京工业大学学报：自然科学版，2015，37(4)：97-103.(HU Wenjie，XU Hongzhong. Characteristic of diaphragm wall deflection due to deep excavation of municipal tunnel[J]. Journal of Nanjing Tech University：Natural Science，2015，37(4)：97-103.(in Chinese)) " target="_blank">
[18]	王卫东，徐中华. 预估深基坑开挖对周边建筑物影响的简化分析方法[J]. 岩土工程学报，2010，32(1)：79-83.(WANG Weidong，XU Zhonghua. Simplified analysis method for evaluating excavation induced damage of adjacent buildings[J]. Chinese Journal of Geotechnical Engineering，2010，32(1)：79-83.(in Chinese)) " target="_blank">
[19]	任建喜，张引合，张琨，等. 西安地铁车站深基坑变形规律FLAC 模拟研究[J]. 铁道工程学报，2011，(3)：90-93.(REN Jianxi，ZHANG Yinhe，ZHANG Kun，et al. Research on the deformation law of deep foundation pit of metro station in Xi?an by FLAC simulation[J]. Journal of Railway Engineering Society，2011，(3)：90-93.(in Chinese)) " target="_blank">
[11]	徐中华，王建华，王卫东. 上海地区深基坑工程中地下连续墙的变形性状[J]. 土木工程学报，2008，41(8)：81-86.(XU Zhonghua，WANG Jianhua，WANG Weidong. Deformation behavior of diaphragm walls in deep excavations in Shanghai[J]. China Civil Engineering Journal，2008，41(8)：81-86.(in Chinese)) " target="_blank">