大直径旋挖钢管混凝土桩滑坡应急抢险与工后变形监测
|
摘要
2011年8月23日,成(都)—雅(安)高速公路K1920+416处发生大型滑坡灾害,导致成雅高速公路断道约15天,该滑坡为"软弱基座式"压致拉裂型滑坡。为加快抢险施工进度,在国内首次采用大直径旋挖钢管混凝土桩进行滑坡应急处治。通过三维有限元数值模拟优化钢管混凝土桩滑坡加固处治方案,并结合工后滑坡地表位移监测,验证了滑坡应急处治工程的有效性,为滑坡应急整治提供一种高效工程治理措施。
On August 23,2011,a large-scale landslide attacked the Section K1920 + 416 of Chengdu—Ya'an Highway,and the Highway was blocked for about 15 days by this"soft base type"compression-rupture landslide.In order to speed up the construction progress of emergency rescue,the large-diameter rotary-drilled concrete-filled steel pipe piles were adopted for the first time to deal with the landslide in China.This landslide reinforcement scheme of concrete-filled steel pipe pile was optimized by 3 D finite element numerical simulation and,with the validity of this treatment for rescue verified by the ground displacement monitoring after the construction,it provided an effective engineering control measure for landslide emergency treatment.
On August 23,2011,a large-scale landslide attacked the Section K1920 + 416 of Chengdu—Ya'an Highway,and the Highway was blocked for about 15 days by this"soft base type"compression-rupture landslide.In order to speed up the construction progress of emergency rescue,the large-diameter rotary-drilled concrete-filled steel pipe piles were adopted for the first time to deal with the landslide in China.This landslide reinforcement scheme of concrete-filled steel pipe pile was optimized by 3 D finite element numerical simulation and,with the validity of this treatment for rescue verified by the ground displacement monitoring after the construction,it provided an effective engineering control measure for landslide emergency treatment.
引文
[1]张倬元,王士天,王兰生,等.工程地质分析原理[M].2版.北京:地质出版社,1994.ZHANG Z Y,WANG S T,WANG L S,et al.Principle of Engineering Geological Analysis[M].2nd ed.Beijing:Geological Publishing House,1994.
[2]冯文凯,石豫川,柴贺军,等.缓倾角层状高边坡变形破坏机制物理模拟研究[J].中国公路学报,2004,17(2):32-36.FENG W K,SHI Y C,CHAI H J,et al.Study of mechanism of deformation failure of a low-angle bedded high slope with physical simulation method[J].China Journal of Highway and Transport,2004,17(2):32-36.
[3]赵建昌,李永和,吉随旺.缓倾角红层路堑高边坡应力状态与防护研究[J].岩石力学与工程学报,2005,24(增刊2):5751-5755.ZHAO J C,LI Y H,JI S W.Study on stress state and protection of excavated cutting of high slope in gently inclined red beds[J].Chinese Journal of Rock Mechanics and Engineering,2005,24(S2):5751-5755.
[4]孙毅,向波,杨小松.小直径钢管排桩支挡结构抗滑机理及工程应用[J].路基工程,2012(3):57-60.SUN Y,XIANG B,YANG X S.Anti-slide mechanism and engineering application of small diameter steel tubular row piles as supporting structure[J].Subgrade Engineering,2012(3):57-60.
[5]李宁,许建聪.基于ABAQUS的三维边坡降雨入渗模块的开发及其应用[J].岩土工程学报,2015,37(4):667-674.LI N,XU J C.Development and application of three-dimensional rainfall infiltration module based on ABAQUS[J].Chinese Journal of Geotechnical Engineering,2015,37(4):667-674.
[6]邬凯,杨雪莲,周永江.触发式位移计在山区公路边坡远程实时监测中的应用[J].路基工程,2016(4):181-185.WU K,YANG X L,ZHOU Y J.Application of trigger displacement meter in remote real-time monitoring along mountain highway slope[J].Subgrade Engineering,2016(4):181-185.
[7]邬凯,盛谦,张勇慧,等.山区公路路基边坡地质灾害远程监测预报系统开发及应用[J].岩土力学,2010,31(11):3683-3687.WU K,SHENG Q,ZHANG Y H,et al.Development of real-time remote monitoring and forecasting system for geological disasters at subgrade slopes of mountainous highways and its application[J].Rock and Soil Mechanics,2010,31(11):3683-3687.
[8]张勇慧,李红旭,盛谦,等.基于表面位移的公路滑坡监测预警研究[J].岩土力学,2010,31(11):3671-3677.ZHANG Y H,LI H X,SHENG Q,et al.Study of highway landslide monitoring and early warning based on surface displacements[J].Rock and Soil Mechanics,2010,31(11):3671-3677.
[2]冯文凯,石豫川,柴贺军,等.缓倾角层状高边坡变形破坏机制物理模拟研究[J].中国公路学报,2004,17(2):32-36.FENG W K,SHI Y C,CHAI H J,et al.Study of mechanism of deformation failure of a low-angle bedded high slope with physical simulation method[J].China Journal of Highway and Transport,2004,17(2):32-36.
[3]赵建昌,李永和,吉随旺.缓倾角红层路堑高边坡应力状态与防护研究[J].岩石力学与工程学报,2005,24(增刊2):5751-5755.ZHAO J C,LI Y H,JI S W.Study on stress state and protection of excavated cutting of high slope in gently inclined red beds[J].Chinese Journal of Rock Mechanics and Engineering,2005,24(S2):5751-5755.
[4]孙毅,向波,杨小松.小直径钢管排桩支挡结构抗滑机理及工程应用[J].路基工程,2012(3):57-60.SUN Y,XIANG B,YANG X S.Anti-slide mechanism and engineering application of small diameter steel tubular row piles as supporting structure[J].Subgrade Engineering,2012(3):57-60.
[5]李宁,许建聪.基于ABAQUS的三维边坡降雨入渗模块的开发及其应用[J].岩土工程学报,2015,37(4):667-674.LI N,XU J C.Development and application of three-dimensional rainfall infiltration module based on ABAQUS[J].Chinese Journal of Geotechnical Engineering,2015,37(4):667-674.
[6]邬凯,杨雪莲,周永江.触发式位移计在山区公路边坡远程实时监测中的应用[J].路基工程,2016(4):181-185.WU K,YANG X L,ZHOU Y J.Application of trigger displacement meter in remote real-time monitoring along mountain highway slope[J].Subgrade Engineering,2016(4):181-185.
[7]邬凯,盛谦,张勇慧,等.山区公路路基边坡地质灾害远程监测预报系统开发及应用[J].岩土力学,2010,31(11):3683-3687.WU K,SHENG Q,ZHANG Y H,et al.Development of real-time remote monitoring and forecasting system for geological disasters at subgrade slopes of mountainous highways and its application[J].Rock and Soil Mechanics,2010,31(11):3683-3687.
[8]张勇慧,李红旭,盛谦,等.基于表面位移的公路滑坡监测预警研究[J].岩土力学,2010,31(11):3671-3677.ZHANG Y H,LI H X,SHENG Q,et al.Study of highway landslide monitoring and early warning based on surface displacements[J].Rock and Soil Mechanics,2010,31(11):3671-3677.