[1]夏曾银,郑 刚,邓 旭,等.天津某半逆作法基坑结构柱隆起变形实测分析[J].西安建筑科技大学学报(自然科学版),2022,54(05):657-664790.[doi:10.15986/j.1006-7930.2022.05.003 ]
　XIA Zengyin,ZHENG Gang,DENG Xu,et al.Analysis on heave deformation of columns for excavation with semi top-down method in Tianjin[J].J. Xi'an Univ. of Arch. & Tech.(Natural Science Edition),2022,54(05):657-664790.[doi:10.15986/j.1006-7930.2022.05.003 ]
点击复制

天津某半逆作法基坑结构柱隆起变形实测分析()
分享到：

西安建筑科技大学学报（自然科学版）[ISSN:1006-7930/CN:61-1295/TU]

卷:
54
期数:
2022年05期
页码:
657-664790
栏目:
出版日期:
2022-10-28

文章信息/Info

Title:
Analysis on heave deformation of columns for excavation with semi top-down method in Tianjin
文章编号:
1006-7930(2022)05-0657-08
作者:
夏曾银1; 郑 刚2; 邓 旭3; 冀叶涛1; 程雪松2; 孟灵波1
(1.中铁隧道局集团路桥工程有限公司，天津 300308; 2.天津大学 建筑工程学院，天津 300350; 3.天津城建大学 建筑设计研究院有限公司，天津 300192)
Author(s):
XIA Zengyin1;  ZHENG Gang2;  DENG Xu3;  JI Yetao1;  CHENG Xuesong2;  MENG Lingbo1
(1.China Railway Tunnel Group Road & Bridge Engineering Co., Ltd., Tianjin 300308, China; 2.School of Civil Engineering, Tianjin University, Tianjin 300350, China; 3.Tianjin Chengjian University Institute of Architectural Design Co,. Ltd, Tianjin, 300192)
关键词:
基坑;  半逆作法;  结构柱;  隆起变形;  监测
Keywords:
excavation;  semi top-down method;  columns;  heave;  monitoring data
分类号:
TU43
DOI:
10.15986/j.1006-7930.2022.05.003
文献标志码:
A
摘要:
半逆作法基坑施工可以综合明挖顺作法与盖挖逆作法的各自优势，节约造价且便于施工.天津某交通枢纽广场基坑采用环形盖挖逆作、中心明挖顺作的半逆作法施工，通过对结构柱隆沉变化实测数据进行分析研究表明，结构柱的竖向变形基本表现为开挖阶段隆起现象显著，层板施工阶段隆起稳定甚至发生轻微沉降.当基坑开挖深度较浅时，结构柱的隆起变形量相对较小，随着开挖深度增加隆起量急剧增大.半逆作法基坑的结构柱的最终隆起量为(0.19%～0.35%)D(D为基坑开挖深度)，数值更接近于顺作法基坑，明显大于盖挖逆作法施工的基坑，这对地下结构安全性的影响也更加严重.在此基础上提出设计施工中的一些注意事项，为今后类似工程的建设提供参考.
Abstract:
The construction of excavation with semi top-down method can integrate the respective advantages of bottom-up method and top-down method, save the cost and facilitate the construction. The excavation of one transport hub square in Tianjin is constructed by the semi top-down method with the top-down method in the periphery and the bottom-up method in the central part. Through the analysis of the monitoring data of columns heave and settlement, the vertical deformation of columns shows that the heave phenomenon is significant in the excavation stage, and stable or even slight settlement in the laminate construction stage. When the depth of the excavation is shallow, the heave of the column is relatively small, and the heave increases sharply with the increase of the excavation depth. The final heave of the columns of the excavation with the semi top-down method is(.19%～0.35%)D(D is the depth of excavation), which is closer to the bottom-up method excavation and significantly greater than the top-down method excavation. And the heave of the columns has a more serious impact on the safety of the underground structure. On this basis, some precautions in design and construction are put forward, which can provide reference for the construction of similar projects in the future.

参考文献/References:

[1]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 Guobin, WANG Weidong. Excavation engineering manual[M]. 2nd ed. Beijing: China Architecture and Building Press, 2009.
[2]丁勇春. 软土地区深基坑施工引起的变形及控制研究[D]. 上海: 上海交通大学, 2009.
DING Yongchun. Excavation-induced deformation and control in soft deposits[D]. Shanghai: Shanghai Jiao Tong University, 2009.
[3]HSIEH P G, OU C Y. Shape of ground surface settlement profiles caused by excavation[J]. Canadian Geotechnical Journal, 1998, 35:1004-1017.
[4]HU Z F,YUE Z Q,ZHOU J. Design and construction of a deep excavation in soft soils adjacent to the Shanghai Metro tunnels[J]. Canadian Geotechnical Journal, 2003, 40(5):933-948.
[5]梅源, 袁一力, 胡长明, 等. 西安地铁深基坑变形模式统计规律分析[J]. 西安建筑科技大学学报(自然科学版), 2016, 48(3):371-375.
MEI Yuan, YUAN Yili, HU Changming, et al. Statistical analysis of the construction deformation model of the deep foundation pit in Xi'an Metro Station[J]. J. Xi'an Univ. of Arch. & Tech.(Natural Science Edition), 2016, 48(3):371-375.
[6]王卫东, 徐中华, 王建华. 上海地区深基坑周边地表变形性状实测统计分析[J]. 岩土工程学报, 2011, 33(11):1659-1666.
WANG Weidong, XU Zhonghua, WANG Jianhua. Statistical analysis of characteristics of ground surface settlement caused by deep excavations in Shanghai soft soils[J]. Chinese Journal of Geotechnical Engineering, 2011, 33(11):1659-1666.
[7]LIU J, CAO H H, JIANG X F. Deformation monitoring and numerical analysis at the top of slope of a foundation pit[J]. Applied Mechanics & Materials, 2013(353/356):640-643.
[8]LIU G B, NG C W W, WANG Z W. Observed performance of a deep multistrutted excavation in Shanghai soft clays[J]. Journal of Geotechnical & Geoenvironmental Engineering, 2005, 131(8):1004-1013.
[9]朱兴云, 缪广吉, 周宏伟, 等. 软黏土中坑中坑式内支撑基坑抗隆起稳定性分析[J]. 西安建筑科技大学学报(自然科学版), 2020, 52(4):505-513.
ZHU Xingyun, MIAO Guangji, ZHOU Hongwei, et al. Basal heave stability analysis of pit-in-pit braced excavations in clay[J]. J. Xi'an Univ. of Arch. & Tech.(Natural Science Edition), 2020, 52(4):505-513.
[10]OU C Y, HSIEH P G, CHIOU D C. Characteristics of ground surface settlement during excavation[J]. Canadian Geotechnical Journal, 1993, 30(5):758-767.
[11]LIN M J. Discussions on foundation pit construction scheme of large building in mountain area[J]. Applied Mechanics and Materials. 2014, 580:2289-2293.
[12]周均立. 临近供能管沟的超大深基坑支护设计与施工实践[J]. 西安建筑科技大学学报(自然科学版), 2017, 49(3):401-407, 415.
ZHOU Junli. Design and construction practice of super-large deep foundation pit adjacent to energy supply pipeline[J]. J. Xi'an Univ. of Arch. & Tech.(Natural Science Edition), 2017, 49(3):401-407, 415.
[13]MOORMANN C. Analysis of wall and ground movements due to deep excavations in soft soil based on a new worldwide database[J]. Soils and Foundations, 2004,44(1):87-98.
[14]刘国彬, 黄院雄, 侯学渊. 基坑回弹的实用计算法[J]. 土木工程学报, 2000, 33(4):61-67.
LIU Guobin, HUANG Yuanxiong, HOU Xueyuan. A Practical method for calculating a heave of excavated foundation[J]. China Civil Engineering Journal, 2000, 33(4):61-67.
[15]徐彪, 刘佳. 对深基坑坑底隆起问题的探讨[J]. 广西工学院学报, 2004, 15(1):66-68.
XU Biao, LIU Jia. An inquiry into the problem of upheaval in the bottom of the deep foundation pit[J]. Journal of Guangxi University of Science and Technology, 2004, 15(1):66-68.
[16]陆培毅, 余建星, 肖健. 深基坑回弹的空间性状研究[J].天津大学学报, 2006, 39(3):301-305.
LU Peiyi, YU Jianxing, XIAO Jian. Three-Dimensional Properties of Foundation Pit Resilience Under Unloading[J]. Journal of Tianjin University, 2006, 39(3):301-305.
[17]宰金珉. 开挖回弹预测的简化方法[J]. 南京建筑工程学院学报, 1997(2):23-27.
ZAI Jinmin. The Simplified method of prediction for the foundation ditches rebound of excavation[J]. Journal of Nanjing Architectural and Civil Engineering Institute, 1997(2):23-27.
[18]刘毅, 张勇, 袁青, 等. 邻近边坡地铁车站基坑顺逆结合施工稳定性分析[J]. 西安建筑科技大学学报(自然科学版), 2019, 51(6):873-881.
LIU Yi, ZHANG Yong, YUAN Qing, et al. Analysis on the stability of bias metro station pit excavated through the combination method of bottom-up and top-down technology[J]. J. Xi'an Univ. of Arch. & Tech.(Natural Science Edition), 2019, 51(6):873-881.
[19]郑刚, 张立明, 王琦, 等. 基坑开挖对坑内工程桩影响的实测及有限元分析[J]. 天津大学学报, 2012, 45(12):1062-1070.
ZHENG Gang, ZHANG Liming, WANG Qi, et al. Field observation and finite element analysis of effect of overlying excavation on piles[J]. Journal of Tianjin University, 2012, 45(12):1062-1070.
[20]郑刚, 刘庆晨, 邓旭, 等. 天津站地下换乘中心基坑工程2标段盖挖逆作法的实测分析[J]. 天津大学学报, 2012(10):930-937.
ZHENG Gang, LIU Qingchen, DENG Xu, et al. Analysis on monitoring of top-down method of section 2 of tianjin railway station underground transfer centre[J]. Journal of Tianjin University, 2012(10):930-937.
[21]郑刚, 张涛, 程雪松,等. 天津地铁车站基坑立柱回弹的实测统计分析[J]. 岩土力学, 2017(S1):387-394.
ZHENG Gang, ZHANG Tao, CHENG Xuesong, et al. Statistical analysis of measured data of center post upheaval in metro station excavations in Tianjin[J]. Rock and Soil Mechanics, 2017(S1):387-394.

备注/Memo

备注/Memo:
收稿日期:2021-11-06修改稿日期:2022-10-08
基金项目:国家自然科学基金(52178343)
第一作者:夏曾银(1979—),男,高级工程师,主要从事城市轨道交通、市政工程的管理与科研工作,E-mail:xcy79@163.com
通信作者:邓 旭(1985—),男,博士,高级工程师,主要从事基坑支护等岩土工程设计及科研工作.E-mail:389510511@qq.com
更新日期/Last Update: 2022-10-28