防岩溶塌陷加筋垫层大比例模型试验及设计理论研究

doi:10.13722/j.cnki.jrme.2015.1018

Abstract
Figure/Table
References (0)
Related Citation (15)

Download: PDF (442 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract To prevent the underneath collapse induced hazard in road transportation，the multi-layer geotextile reinforcement is a cost-effective and promising technology，although its bearing mechanism and design method remain to be further studied. The embankment models of 1∶5 in scaling，with the single-layer，three-layer and four-layer geotextile reinforcements installed respectively，were designed and tested in laboratory. In order to study the load distribution and displacement characteristics，the vertical pressure on each geotextile and the relevant displacement were measured with the load cells and deformeters installed in the model. The key issues in design and the relevant calculation theory were discussed based on the measured data. The test results revealed that，in multi-layered geotextile reinforcement，the foot of soil arch might rise to around the top-layer reinforcement，and the dual-soil-arch emerged. The upper load distributed non-uniformly among the reinforcements. The surface depression could be related to the bottom deflection with a simplified method ignoring the dilation effect. The bottom-layer reinforcement is the key to control the surface depression while the top-layer is of the most importance to control the limit state. Based on the measured data and further analysis，a flow chart of design was proposed for practical engineering application.

Key words： embankment engineering multi-layered reinforcement sinkhole model test

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	HE Wei1
	2
	LI Kun1
	WANG Fanghong1

Cite this article:

HE Wei1,2,LI Kun1, et al. Large-scale experimental study of multi-layered reinforcement to prevent underneath sinkhole in karst terrain and the design method[J]. , 2016, 35(5): 980-988.

URL:

http://www.rockmech.org/EN/10.13722/j.cnki.jrme.2015.1018 OR http://www.rockmech.org/EN/Y2016/V35/I5/980

[11]	贺炜，付宏渊，殷苗苗. 岩溶区路堤下水平加筋体受力分析方法研究[J]. 水文地质工程地质，2010，(6)：33-37.(HE Wei，FU Hongyuan，YIN Miaomiao. Study on calculating method of horizontally reinforcement beneath embankment constructed in karst terrain[J]. Hydrogeology and Engineering Geology，2010，(6)：33-37.(in Chinese))
[4]	GIROUD J P，BONAPARTE R，BEECH J F，et al. Design of soil layer-geosynthetic systems overlying voids[J]. Geotextiles and Geomembranes，1990，9(1)：11-50. " target="_blank">
[15]	中华人民共和国国家标准编写组. GB 50021—2001 岩土工程勘察规范(2009年版)[S]. 北京：中国建筑工业出版社，2009.(The National Standards Compilation Group of People?s Republic of China. GB 50021—2001 Code for investigation of geotechnical engineering (edition in 2009)[S]. Beijing：China Architecture and Building Press，2009.(in Chinese)) " target="_blank">
[6]	AGAIBY S W，JONES C J F P. Design of reinforced fill systems over voids[J]. Canadian Geotechnical Journal，1995，32(6)：939-945. " target="_blank">
[5]	JONES C J F P，COOPER A H. Road construction over voids caused by active gypsum dissolution，with an example from Ripon，North Yorkshire，England[J]. Environmental Geology，2005，48(3)：384-394.
[9]	吕伟华，缪林昌，王非. 基于不完全土拱效应的土工格栅加固机制与设计方法[J]. 岩石力学与工程学报，2009，31(3)：632-639.(LU Weihua，MIAO Linchang，WANG Fei. Mechanism of geogrid reinforcement based on partially developed soil arch effect and design method[J]. Chinese Journal of Rock Mechanics and Engineering，2012，31(3)：632-639.(in Chinese))
[13]	British Standard Institution. BS 8006—1：2010 Code of practice for strengthened/ reinforced soils and other fills[S]. London，England：British Standards Institute，2010. " target="_blank">
[2]	VILLARD P，GIRAUD H，GOURC J P. A geosynthetic reinforcement solution to prevent the formation of localized sinkholes[J]. Canadian Geotechnical Journal，2000，37(5)：987-999. " target="_blank">
[12]	付宏渊，殷苗苗，贺炜. 防治公路岩溶塌陷的土工合成材料设计理论研究[J]. 岩土力学，2011，32(10)：2 983-2 988.(FU Hongyuan，YIN Miaomiao，HE Wei. Study of design theory of geosynthetics for treating road sinkhole collapse hazard in karst terrain[J]. Rock and Soil Mechanics，2011，32(10)：2 983-2 988.(in Chinese)) " target="_blank">
[3]	BONAPARTE R，BERG R R. The use of geosynthetics to support roadways over sinkhole prone areas[C]// BECK B F，WILSON W L，ed. Karst Hydrogeology：Engineering and Environmental Applications. Rotterdam：Balkema，1987：437-445. " target="_blank">
[14]	WANG M C，FENG Y X，JAO M. Stability of geosynthetic-reinforced soil above a cavity[J]. Geotextiles and Geomembranes，1996，14(2)：95-109. " target="_blank">
[16]	SCHLOSSER F，LONG N T. Recent results of French research on reinforced earth[J]. Journal of the Construction Division，1974，100(3)：223-237. " target="_blank">
[7]	VILLARD P，BRIANCON L. Design of geosynthetic reinforcements for platforms subjected to localized sinkholes[J]. Canadian Geotechnical Journal，2008，45(2)：196-209. " target="_blank">
[10]	王非，缪林昌. 落水洞上覆路基土工加筋设计新方法[J]. 东南大学学报：自然科学版，2009，39(6)：1 217-1 221.(WANG Fei，MIAO Linchang. New design method of geosynthetic reinforced embankment over sinkholes[J]. Journal of Southeast University：Natural Science，2009，39(6)：1 217-1 221.(in Chinese)) " target="_blank">
[1]	贵州省交通科学研究院. 岩溶地区公路修筑成套技术研究[R]. 贵阳：贵州省交通科学研究院，2006.(Guizhou Transport Science Research Institute Shares. Research on innovative technologies for highway engineering in karst areas[R]. Guiyang：Guizhou Transport Science Research Institute Shares，2006.(in Chinese)) " target="_blank">
[8]	朱斌，陈若曦，陈云敏，等. 抗沟渠型空洞水平加筋体的作用机制及设计方法[J]. 中国公路学报，2009，22(1)：11-16.(ZHU Bin，CHEN Ruoxi，CHEN Yunmin，et al. Action mechanism and design method of horizontal reinforcement subjected to trench void[J]. China Journal of High way and Transport，2009，22(1)：11-16.(in Chinese))