[1]邓博团,申超凡,郑谢缙,等.黄土地基不均匀沉降对现浇管廊影响的试验研究[J].西安建筑科技大学学报(自然科学版),2024,56(02):212-219.[doi:10.15986/j.1006-7930.2024.02.007]
　DENG Botuan,SHEN Chaofan,ZHENG Xiejin,et al.Experimental study on the influence of uneven settlement of loess foundation on cast-in-place pipe gallery[J].J. Xi’an Univ. of Arch. & Tech.(Natural Science Edition),2024,56(02):212-219.[doi:10.15986/j.1006-7930.2024.02.007]
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黄土地基不均匀沉降对现浇管廊影响的试验研究()
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西安建筑科技大学学报（自然科学版）[ISSN:1006-7930/CN:61-1295/TU]

卷:
56
期数:
2024年02期
页码:
212-219
栏目:
出版日期:
2024-04-28

文章信息/Info

Title:
Experimental study on the influence of uneven settlement of loess foundation on cast-in-place pipe gallery
文章编号:
1006-7930(2024)02-0212-08
作者:
邓博团; 申超凡; 郑谢缙; 付一帆
（西安科技大学 建筑与土木工程学院，陕西 西安 710054）
Author(s):
DENG Botuan;  SHEN Chaofan;  ZHENG Xiejin;  FU Yifan
（School of Architecture and Civil Engineering, Xi′an University of Science and Technology, Xi′an 710054, China）
关键词:
现浇管廊; 湿陷性黄土; 浸水湿陷; 地基沉降; 变形规律
Keywords:
cast-in-place pipe gallery;  collapsible loess;  water immersion collapsibility;  foundation settlement;  law of deformation
分类号:
TU431
DOI:
10.15986/j.1006-7930.2024.02.007
文献标志码:
A
摘要:
湿陷性黄土地基浸水后的不均匀沉降会使现浇管廊结构产生附加内力，造成管廊结构开裂甚至破坏，严重威胁其运营安全.为深入研究黄土地层湿陷变形对现浇管廊的影响，开展了黄土地层局部浸水湿陷的模型试验.在试验中，设定局部浸水范围，以地基浸水深度为变量，对管廊结构底部位移、土体接触压力、表面应变和地表沉降进行了监测，并分析了其发展趋势.试验结果表明:当局部基底浸水深度达到20 cm，管廊结构在浸水区出现明显的弯曲变形，结构在湿陷区内的最大下沉达到0.57 mm；结构与土体接触压力变化较大区域为湿陷区边缘的管廊底板处；在管廊底部局部浸水发生不均匀沉降时，结构受力形式表现为底板受拉，顶板受压，且越远离管廊中部，所产生的应变越小，拉压应变在湿陷区边缘发生转变；地表也会发生沉降现象，最大沉降值为2.24 mm.试验结果可为湿陷黄土地区现浇管廊的设计和相关病害的防治提供参考.
Abstract:
The uneven settlement of collapsible loess foundation after immersion will cause additional internal forces to the cast-in-place pipe gallery structure, resulting in cracking or even destruction of the pipe gallery structure, which seriously threatens its operation safety. In order to further study the influence of collapsible deformation of loess stratum on cast-in-place pipe gallery, a model test of local immersion collapsible loess stratum was carried out. In the test, the local immersion range was set, and the depth of foundation immersion was used as a variable to monitor the bottom displacement, soil contact pressure, surface strain and surface settlement of the pipe gallery structure, and its development trend was analyzed. The test results show that when the immersion depth of the local basement reaches 20 cm, the tunnel structure has obvious bending deformation in the immersion area, and the maximum subsidence of the structure in the collapsible area reaches 0.57 mm. The area where the contact pressure between the structure and the soil changes greatly is the bottom plate of the pipe gallery at the edge of the collapsible area. When uneven settlement occurs in the local immersion at the bottom of the pipe gallery, the stress form of the structure is that the floor is pulled and the roof is pressed, and the farther away from the middle of the pipe gallery, the smaller the strain is, and the tensile and compressive strain changes at the edge of the collapsible zone. The surface subsidence phenomenon also occurs, and the maximum settlement value is 2.24 mm. The test results of this paper can provide reference for the design of castinplace pipe gallery in collapsible loess area and the prevention and control of related disasters.

参考文献/References:

［1］郑建国,邓国华,刘争宏,等.黄土湿陷性分布不连续对湿陷变形的影响研究［J］.岩土工程学报,2015,37(1):165-170.

ZHENG Jianguo, DENG Guohua, LIU Zhenghong, et al. Study on the effect of discontinuous distribution of collapsible loess on collapsible deformation ［J］. Geotechnical Engineering, 2015,37(1): 165-170.
［2］姚志华,黄雪峰,陈正汉,等.关于黄土湿陷性评价和剩余湿陷量的新认识［J］.岩土力学,2014,35(4):998-1006.
YAO Zhihua, HUANG Xuefeng, CHEN Zhenghan, et al. A new understanding of loess collapsibility evaluation and residual collapsibility ［J］. Geomechanics, 2014,35(4): 998-1006.
［3］AMIR A G, MOHSEN S H, ALI K, et al. Hydro-mechanical behavior of undisturbed collapsible loessial soils under different stress state conditions ［J］. Engineering Geology, 2015,195: 28-41.
［4］JULIAN C P, JORGE C E, VICENTE C. Criticality and threat analysis on utility tunnels for planning security policies of utilities in urban underground space［J］. Expert Systems with Applications, 2013,40:4707-4714.
［5］JULIAN C P, JORGE C E, VICENTE C. Strategic decision support system for utility tunnel′s planning applying A′WOT method ［J］. Tunnelling and Underground Space Technology, 2016,55:146-152.
［6］VALDENEBRO J V, GIMENA F N. Urban utility tunnels as a long-term solution for the sustainable revitalization of historic centres: The case study of Pamplona-Spain［J］. Tunnelling and Underground Space Technology, 2018,81:228-236.
［7］崔国静,周庆国,宋战平.城市地下综合管廊建设与发展探析［J］.西安建筑科技大学学报(自然科学版),2020,52(5):660-666.
CUI Guojing, ZHOU Qingguo, SONG Zhanping. Analysis on the construction and development of urban underground comprehensive pipe gallery ［J］.J. of Xi′an Univ. of Arch. & Tech. (Natural Science Edition), 2020,52(5):660-666.
［8］范文,邵生俊,杨春鸣,等.黄土隧道地基湿陷压缩应力的计算方法［J］.岩土工程学报,2015,(S2):80-85.
FAN Wen, SHAO Shengjun, YANG Chunming, et al. Calculation method of collapsible compressive stress of loess tunnel foundation［J］. Journal of Geotechnical Engineering, 2015, (S2):80-85.
［9］翁效林,王俊,王立新,等.黄土地层浸水湿陷对地铁隧道影响试验研究［J］.岩土工程学报,2016(8):1374-1380.
WENG Xiaolin, WANG Jun, WANG Lixin, et al. Experimental study on the influence of soaking collapse of loess stratum on subway tunnel ［J］. Chinese Journal of Geotechnical Engineering, 2016(8):1374-1380.
［10］WENG Xiaolin, SUN Yufeng, ZHANG Yuwei, et al. Physical modeling of wetting-induced collapse of shield tunneling in loess strata［J］. Tunnelling and Underground Space Technology, 2019,90:208-219.
［11］WENG X, ZHOU R, RAO W， et al. Research on subway shield tunnel induced by local water immersion of collapsible loess ［J］. Nat Hazards, 2021,108:1197-1219.
［12］王树明,梁庆国,王二磊.黄土地区地铁隧道不同湿陷变形方式模型试验系统的研制及应用研究［J］.现代隧道技术,2020,57(2):157-162.
WANG Shuming, LIANG Qingguo, WANG Erlei. Development and application of model test system for different collapsible deformation modes of subway tunnels in loess area ［J］. Modern Tunnel Technology, 2020,57 (2):157-162.
［13］XIAO Qinghua, LEI Shengxiang, CUI Kai, et al, Effect of the longitudinal local wetting-induced collapse on tunnel structure in loess strata ［J］. Tunnelling and Underground Space Technology, 2022,122: 104361
［14］张玉伟,宋战平,翁效林,等.大厚度黄土地层浸水湿陷对地铁隧道影响的模型试验研究［J］.岩石力学与工程学报, 2019,38(5):1030-1040.
ZHANG Yuwei, SONG Zhanping, WENG XiaoLin, et al. Model test study on the influence of soaking collapse in thick loess stratum on subway tunnel ［J］. Journal of Rock Mechanics and Engineering, 2019,38(5):1030-1040.
［15］邵生俊,李骏,李国良,等.大厚度湿陷性黄土隧道现场浸水试验研究［J］.岩土工程学报,2018,40(8):1395-1404.
SHAO Shengjun, LI Jun, LI Guoliang, et al. Field immersion test of collapsible loess tunnel with large thickness ［J］. Geotechnical Engineering, 2018,40(8):1395-1404.
［16］LI Jun, SHAO Shengjun, SHAO Shuai. Collapsible characteristics of loess tunnel site and their effects on tunnel structure ［J］. Tunnelling and Underground Space Technology, 2019,83: 509-519.
［17］王立新,刘保健,白阳阳.湿陷性黄土与地铁地下结构相互作用机理研究［J］.现代隧道技术, 2019,56(1):72-78,86.
WANG Lixin, LIU Jianwei, BAI Yangyang. Study on interaction mechanism between collapsible loess and underground structure of subway ［J］. Modern Tunneling Technology, 2019, 56 (1):72-78,86.
［18］李骏.黄土隧道围岩湿陷与衬砌结构相互作用机制及其评价方法研究［D］. 西安: 西安理工大学,2019.
LI Jun. Study on the interaction mechanism and evaluation method of loess tunnel surrounding rock collapse and lining structure ［D］. Xi′an: Xi′an University of Technology, 2019.
［19］穆晓虎.黄土地层浸水湿陷对综合管廊结构受力变形的影响研究［D］. 西安:长安大学,2018.
MU Xiaohu. Study on the influence of water immersion and collapsibility of loess strata on the stress and deformation of utility tunnel structure ［D］. Xi′an: Chang′an University, 2018.
［20］徐强,陈浩然,李良成,等.黄土地层湿陷对整体管廊破坏作用研究［J］.灾害学:2022，37（4）：23-29.
XU Qiang, CHEN Haoran, LI Liangcheng, et al. Study on the destructive effect of collapsible loess stratum on the whole pipe gallery ［J］.Hazards :2022，37（4）：23-29.
［21］张玉伟.黄土地层浸水对地铁隧道结构受力性状的影响研究［D］.西安：长安大学,2017.
ZHANG Yuwei. Study on the influence of loess stratum immersion on the mechanical properties of subway tunnel structure ［D］. Xi′an: Chang′an University, 2017.
［22］张延杰,王旭,梁庆国,等.人工制备强湿陷性黄土物理力学性质试验研究［J］.兰州交通大学学报,2015,34(6):27-31.
ZHANG Yanjie, WANG Xu, LIANG Qingguo, et al. Experimental study on physical and mechanical properties of artificially prepared strong collapsible loess ［J］. Journal of Lanzhou Jiaotong University, 2015,34 (6):27-31.

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备注/Memo

备注/Memo:
收稿日期:2022-11-22 修回日期:2024-03-25
基金项目:国家自然科学基金（42177155）；西部绿色建筑国家重点实验室开放基金（LSKF202323）
第一作者:邓博团(1981—)，男，博士，高级工程师.主要从事土木工程防灾减灾工程与技术、岩土力学与工程应用方面的研究．E-mail：deng13720412121@139.com
通信作者:申超凡(1998—)，男，硕士生，主要从事岩土工程方面的研究．E-mail：1534483993@qq.com
更新日期/Last Update: 2024-06-24