|Table of Contents|

Study on settlement and deformation characteristics and stability of subgrade on loose deposit caused by earthquake collapse(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2025年03期
Page:
196-208
Research Field:
岩土工程
Publishing date:

Info

Title:
Study on settlement and deformation characteristics and stability of subgrade on loose deposit caused by earthquake collapse
Author(s):
LIU Jing1;  LI Lin2
(1. China Highway Engineering Consulting Corporation, Beijing 100195, China; 2. School of Highway, Chang'an University, Xi'an 710064, Shaanxi, China)
Keywords:
subgrade stability;  centrifuge model test;  deposit;  numerical analysis
PACS:
U416.1
DOI:
10.19815/j.jace.2025.03054
Abstract:
In order to further evaluate the potential application of seismic deposits in post disaster reconstruction, typical deposits at Nanhua tunnel and Panlongshan tunnel after the Wenchuan earthquake were used as a basis to obtain key physical and mechanical parameters such as cohesion, internal friction angle, optimal moisture content, and maximum dry density through indoor experiments. On the basis, five sets of geotechnical centrifuge model tests were designed and carried out under different working conditions, focusing on exploring the influence mechanism of moisture content changes and particle size distribution characteristics on the stability and deformation behavior of the subgrade. At the same time, numerical simulation methods were used to analyze the settlement and stability of subgrade. The results show that the two deposits have the characteristics of high coarse particle content, large pores but good grading. The CBR test results show that the deposits have good bearing performance and high road capacity after compaction. During the filling process, there is horizontal displacement on the lower slope surface, and the settlement decreases significantly with the increase of compaction degree. Under the action of earthquake loads, the middle and lower slopes are prone to collapse and damage, with a low safety factor, and the effective support and protective measures are urgently needed. The research results can provide theoretical basis and practical guidance for road reconstruction projects in post disaster accumulation areas.

References:

[1] 崔 鹏,韦方强,何思明,等.5·12汶川地震诱发的山地灾害及减灾措施[J].山地学报,2008,26(3):280-282.
CUI Peng, WEI Fangqiang, HE Siming, et al. Mountain disasters induced by the earthquake of May 12 in Wenchuan and the disasters mitigation[J]. Journal of Mountain Science, 2008, 26(3): 280-282.
[2]许 冲,戴福初,姚 鑫,等.基于GIS的汶川地震滑坡灾害影响因子确定性系数分析[J].岩石力学与工程学报,2010,29(增1):2972-2981.
XU Chong, DAI Fuchu, YAO Xin, et al. GIS based certainty factor analysis of landslide triggering factors in Wenchuan earthquake[J]. Chinese Journal of Rock Mechanics and Engineering, 2010, 29(S1): 2972-2981.
[3]毛雪松,王 楠,高胜雨,等.川藏公路南线(西藏境)松散堆积体类型[J].长安大学学报(自然科学版),2014,34(5):8-14.
MAO Xuesong, WANG Nan, GAO Shengyu, et al. Loose deposits types along the south line of Sichuan-Tibet(in Tibet)highway[J]. Journal of Chang'an University(Natural Science Edition), 2014, 34(5): 8-14.
[4]吴 永,何思明,裴向军,等.震后沟道泥石流启动条件:松散堆积体雨中失稳的水力学机制分析[J].岩土力学,2012,33(10):3043-3050.
WU Yong, HE Siming, PEI Xiangjun, et al. Analysis of condition of startup of gully debris flow after earthquake: the hydraulic mechanism of instability of loose deposits in rainfall[J]. Rock and Soil Mechanics, 2012, 33(10): 3043-3050.
[5]李家春,黄丽珍,田伟平,等.公路自然灾害类型划分[J].长安大学学报(自然科学版),2011,31(2):33-37.
LI Jiachun, HUANG Lizhen, TIAN Weiping, et al. Type classification on natural disasters of highway[J]. Journal of Chang'an University(Natural Science Edition), 2011, 31(2): 33-37.
[6]张丽娟.松散堆积体沿河路基稳定性研究[D].重庆:重庆交通大学,2008.
ZHANG Lijuan. Study on stability for soil riverside roadbed[D]. Chongqing: Chongqing Jiaotong University, 2008.
[7]刘 静.堆积体路基稳定性模型试验与数值分析[D].西安:长安大学,2011.
LIU Jing. Model test and numerical analysis of subgrade on deposit[D]. Xi'an: Chang'an University, 2011.
[8]ZHANG L, JIANG X, SUN R, et al. Stability analysis of unsaturated soil slopes with cracks under rainfall infiltration conditions[J]. Computers and Geotechnics, 2024, 165: 105907.
[9]贾文斌.松散堆积体填料边坡稳定性分析[J].工程技术研究,2024,9(2):13-15.
JIA Wenbin. Stability analysis of loose accumulation filling slope[J]. Engineering and Technological Research, 2024, 9(2): 13-15.
[10]仝霄金,唐建政,付艳青,等.双向地震作用下崩塌堆积体边坡动力模糊可靠性分析[J].地震工程学报,2024,46(2):343-348.
TONG Xiaojin, TANG Jianzheng, FU Yanqing, et al. Dynamic fuzzy reliability analysis of collapse accumulation slopes under bidirectional earthquakes[J]. China Earthquake Engineering Journal, 2024, 46(2): 343-348.
[11]张吉庆.石忠高速公路松散堆积体路堑边坡稳定性分析及处治技术研究[D].重庆:重庆交通大学,2009.
ZHANG Jiqing. Research on stability analysis and treatment technology of the impact deposit soil cutting slope of Shizhong highway[D]. Chongqing: Chongqing Jiaotong University, 2009.
[12]田 海,孔令伟,李 波.降雨条件下松散堆积体边坡稳定性离心模型试验研究[J].岩土力学,2015,36(11):3180-3186.
TIAN Hai, KONG Lingwei, LI Bo. Centrifugal modeling tests on stability of deposits slope under rainfall[J]. Rock and Soil Mechanics, 2015, 36(11): 3180-3186.
[13]SUN Q Z, ZHAO L H, QIN Y G, et al. Experimental study on the failure of loose accumulation landslides under rainfall conditions[J]. Frontiers in Earth Science, 2023, 11: 1291592.
[14]武 明.土石混合非均质填料力学特性试验研究[J].公路,1997,42(1):40-42,49.
WU Ming. Experimental study on mechanical properties of soil-rock mixed heterogeneous filler[J]. Highway, 1997, 42(1): 40-42, 49.
[15]孙文君,宋 杨,路 维,等.黄土-碎石混合体的力学性质试验研究[J].公路,2016,61(5):178-181.
SUN Wenjun, SONG Yang, LU Wei, et al. Experimental study on mechanical properties of loess-macadam mixture[J]. Highway, 2016, 61(5): 178-181.
[16]毛雪松,肖亚军,王铁权,等.坡体外形对松散堆积体路基上边坡稳定性影响分析[J].公路,2017,62(11):36-41.
MAO Xuesong, XIAO Yajun, WANG Tiequan, et al. Impact of slope shape on slope stability with loose deposits subgrade[J]. Highway, 2017, 62(11): 36-41.
[17]ZHANG S, ZHANG L M, PENG M, et al. Assessment of risks of loose landslide deposits formed by the 2008 Wenchuan earthquake[J]. Natural Hazards and Earth System Sciences, 2012, 12(5): 1381-1392.
[18]成 浩,韩培锋,苏有文.基于离散元方法的松散体滑动堆积特性及影响因素分析[J].物理学报,2020,69(16):165-180.
CHENG Hao, HAN Peifeng, SU Youwen. Sliding and accumulation characteristics of loose materials and its influencing factors based on discrete element method[J]. Acta Physica Sinica, 2020, 69(16): 165-180.
[19]边宏光,王 顺,李典庆,等.碎石含量对填方路堤边坡稳定性影响分析[J/OL].工程力学,2024:1-11[2025-05-20].http://kns.cnki.net/kcms/detail/11.2595.o3.20240221.1905.020.html.
BIAN Hongguang, WANG Shun, LI Dianqing, et al. Influence of gravel content on the stability of filling embankment slope[J/OL]. Engineering Mechanics, 2024: 1-11[2025-05-20]. http://kns.cnki.net/kcms/detail/11.2595.o3.20240221.1905.020.html.
[20]尹小涛,王水林,马双科,等.强度变化对崩坡积体堆积机制及稳定性影响研究[J].岩土力学,2010,31(2):620-626.
YIN Xiaotao, WANG Shuilin, MA Shuangke, et al. Study of stability and accumulation mechanism of colluvium affected by change of strength property[J]. Rock and Soil Mechanics, 2010, 31(2): 620-626.
[21]CARRIERE A, GAUTHIER V, DESJARDINS R, et al. Evaluation of loose deposits in distribution systems through:unidirectional flushing[J]. Journal AWWA, 2005, 97(9): 82-92.
[22]孙志亮,孔令伟,郭爱国,等.应力比与含水状态对松散堆积体动力参数及地表反应谱的影响[J].岩土力学,2015,36(10):2765-2772.
SUN Zhiliang, KONG Lingwei, GUO Aiguo, et al. Effects of stress ratio and moisture condition of loose deposits on their dynamic parameters and ground response spectrum[J]. Rock and Soil Mechanics, 2015, 36(10): 2765-2772.
[23]WANG X, SU Q, ZHANG Z Y, et al. Stability analysis of loose accumulation slopes under rainfall: case study of a high-speed railway in Southwest China[J]. Railway Engineering Science, 2024, 32(1): 95-106.
[24]赵建军,巨能攀,涂国祥.松散堆积体工程边坡变形机理分析及支护对策研究[J].工程地质学报,2008,16(5):611-615.
ZHAO Jianjun, JU Nengpan,TU Guoxiang. Deformation mechanism and supporting measures of man-made slopes in loose deposits[J]. Journal of Engineering Geology, 2008, 16(5): 611-615.
[25]杨连祥,翁效林,胡继波,等.强降雨条件下高陡填方雪道路基稳定性分析[J].建筑科学与工程学报,2023,40(3):170-179.
YANG Lianxiang, WENG Xiaolin, HU Jibo, et al. Stability analysis of high and steep fill snow way roadbed under heavy rainfall condition[J]. Journal of Architecture and Civil Engineering, 2023, 40(3): 170-179.
[26]公路土工试验规程:JTG 3430—2020[S].北京:人民交通出版社,2020.
Test methods of soils for highway engineering: JTG 3430—2020[S]. Beijing: China Communications Press, 2020.
[27]胡晋川.基于突变理论的黄土边坡稳定性分析方法研究[D].西安:长安大学,2012.
HU Jinchuan. Based on the catastrophe theory study on stability analysis method of cut slope in loess[D]. Xi'an: Chang'an University, 2012.
[28]包承纲,饶锡保.土工离心模型的试验原理[J].长江科学院院报,1998,15(2):1-3,7.
BAO Chenggang, RAO Xibao. Principle of the geotechnical centrifuge model test[J]. Journal of Changjiang River Scientific Research Institute, 1998, 15(2): 1-3,7.
[29]郭献章,杨治华,李凤柱,等.含软弱夹层顺层岩质边坡锚固优化分析[J].金属矿山,2022(11):186-192.
GUO Xianzhang, YANG Zhihua, LI Fengzhu, et al. Optimization and analysis of the consequent rock slope anchorage engineering with weak interlayer[J]. Metal Mine, 2022(11): 186-192.
[30]吴礼军,徐文彬.邻近高陡边坡采矿爆破振动规律及边坡稳定性分析[J].工程爆破,2022,28(4):113-119.
WU Lijun, XU Wenbin. Analysis of blasting vibration law and slope stability in mining near high and steep slope[J]. Engineering Blasting, 2022, 28(4): 113-119.
[31]冯忠居,李 德,江 冠,等.基于可靠度理论的高边坡二次开挖稳定性分析[J].中国安全生产科学技术,2023,19(8):130-136.
FENG Zhongju, LI De, JIANG Guan, et al. Stability analysis on of secondary excavation of high slope based on reliability theory[J]. Journal of Safety Science and Technology, 2023, 19(8): 130-136.
[32]米 琼,戴世金,张瑞娜,等.干污泥高维填埋的堆体边坡稳定性模拟与分析[J].中国环境科学,2018,38(4):1397-1402.
MI Qiong, DAI Shijin, ZHANG Ruina, et al. Slope stability simulation of dry sludge pile in high-dimensional landfill operation[J]. China Environmental Science, 2018, 38(4): 1397-1402.
[33]TAO Y F, XUE Y G, LI S C, et al. Parameter susceptibility analysis of the Shimen landslide(Liaoning province, China)[J]. Soil Mechanics and Foundation Engineering, 2019, 56(1): 7-11.
[34]公路路基设计规范:JTG D30—2015[S].北京:人民交通出版社,2015.
Specifications for design of highway subgrades: JTG D30—2015[S]. Beijing: China Communications Press, 2015.

Memo

Memo:
-
Last Update: 2025-06-01