悬臂桩的间距布置对基坑支护性能的影响
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摘要
文章研究不同悬臂桩支护的间距布置对悬臂桩支护性能的影响.通过在实验室条件下的数据采集仪与位移计等设备将实验所采集到的悬臂桩支护模型下基坑的实时位移变形数据输入到计算机,并利用自行研发的基坑工程可视化监测系统3DVMS(3D Visualized Monitoring System),对基坑全模型进行了实时监测,实现了实时预警功能.实验与数值分析结果表明,在实验范围内,悬臂桩对基坑的支护性能随间距的减小而增强,在间距为40 mm时支护效果最佳.
In this paper,it is studied how the spacing layout of the pile bracing affects the retaining performance. Collected from the displacement gauge and other equipment in the laboratory,the real-time data of the displacement and deformation of the foundation pit based on pile bracing system are input into computer,and all models of the foundation pit are monitored in real time by using a 3DVMS( 3D Visualized Monitoring System). Experiment and numerical analysis results show that: in the experimental range specified in this paper,the supporting pile's performance strengthens with the decrease of the spacing,and reaches its best effect when the spacing is about 40 mm.
In this paper,it is studied how the spacing layout of the pile bracing affects the retaining performance. Collected from the displacement gauge and other equipment in the laboratory,the real-time data of the displacement and deformation of the foundation pit based on pile bracing system are input into computer,and all models of the foundation pit are monitored in real time by using a 3DVMS( 3D Visualized Monitoring System). Experiment and numerical analysis results show that: in the experimental range specified in this paper,the supporting pile's performance strengthens with the decrease of the spacing,and reaches its best effect when the spacing is about 40 mm.
引文
[1]闫富有,刘忠玉,祝彦知,等.基础工程[M].北京:中国电力出版社,2009:289-290.YAN F Y,LIU Z Y,ZHU Y Z,et al.Foundation engineering[M].Beijing:China Electric Power Press,2009:289-290.
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[4]李雪.排桩支护基坑位移反分析方法研究[D].成都:西南交通大学,2012:7-47.LI X.Research on back analysis methods for piles in row in deep foundation pit[D].Chengdu:Southwest Jiaotong University,2012:7-47.
[5]赖冠宙,房营光,史宏彦.深基坑排桩支护结构空间共同变形分析[J].岩土力学,2007,28(8):1750-1752.LAI G Z,FANG Y G,SHI H Y.Spatial mutual deformation analysis method for row of piles of deep excavation[J].Rock Soil Mech,2007,28(8):1750-1752.
[6]严薇,王维说.基坑排桩支护结构选型的技术经济分析[J].重庆大学学报,2008,31(2):225-227.YAN W,WANG W S.Technical economy analysis on selection of structure about soldier pile[J].J Chongqing Univ,2008,31(2):225-227.
[7]李慧娜.深基坑排桩内支撑支护体系优化设计方法及对周围环境影响研究[D].青岛:青岛理工大学,2009:14-86.LI H N.Numerical study on the optimization design of row piles-braced retaining system deep foundation excavation and the environment influence[D].Qingdao:Qingdao Technological University,2009:14-86.
[8]王维说.深基坑排桩式支护结构选型研究[D].重庆:重庆大学,2007:9-80.WANG W S.Study on selection of soldier pile structure on deep foundation pit[D].Chongqing:Chongqing University,2007:9-80.
[9]蓝日彦.深基坑排桩支护土压力及变形的试验研究[D].南宁:广西大学,2002:7-71.LAN R Y.Test research on earth pressure and displacement of row pile retaining and protecting in deep foundation pit engineering[D].Nanning:Guangxi University,2002:7-71.
[10]ABDOUN T,DOBRY R.Evaluation of pile foundation response to lateral spreading[J].Soil Dyn Earthq Eng,2002,22:1051-1058.
[11]LEE C J.Numerical analysis of pile response to open face tunneling in stiff clay[J].Comput Geotech,2013,51:116-127.
[12]HONG S H,LEE F H,YONG K Y.Three-dimensional pile-soil interaction in soldier-piled excavations[J].Comput Geotech,2003,30:81-107.
[13]夏雄.一种深基坑支护桩间距的确定方法[J].铁道建筑,2005(7):71-73.XIA X.A determination of spacing between retaining piles for deep foundation pit[J].Railway Eng,2005(7):71-73.
[14]王琼.边坡防治工程中抗滑桩合理桩间距的探讨[J].国外建材科技,2006,27(2):51-60.WANG Q.A study of rational space between anti-slide piles in slope projects[J].Sci Technol Overseas Build Mater,2006,27(2):51-60.
[2]周景星,李广信,虞石民,等.基础工程[M].北京:清华大学出版社,2007:268-269.ZHOU J X,LI G X,YU S M,et al.Foundation engineering[M].Beijing:Tsinghua University Press,2007:268-269.
[3]刘伟.基坑排桩支护数值计算研究[D].济南:山东大学,2008:3-78.LI X.Research on numerical calculation of foundation pit support by row of piles[D].Jinan:Shandong University,2008:3-78.
[4]李雪.排桩支护基坑位移反分析方法研究[D].成都:西南交通大学,2012:7-47.LI X.Research on back analysis methods for piles in row in deep foundation pit[D].Chengdu:Southwest Jiaotong University,2012:7-47.
[5]赖冠宙,房营光,史宏彦.深基坑排桩支护结构空间共同变形分析[J].岩土力学,2007,28(8):1750-1752.LAI G Z,FANG Y G,SHI H Y.Spatial mutual deformation analysis method for row of piles of deep excavation[J].Rock Soil Mech,2007,28(8):1750-1752.
[6]严薇,王维说.基坑排桩支护结构选型的技术经济分析[J].重庆大学学报,2008,31(2):225-227.YAN W,WANG W S.Technical economy analysis on selection of structure about soldier pile[J].J Chongqing Univ,2008,31(2):225-227.
[7]李慧娜.深基坑排桩内支撑支护体系优化设计方法及对周围环境影响研究[D].青岛:青岛理工大学,2009:14-86.LI H N.Numerical study on the optimization design of row piles-braced retaining system deep foundation excavation and the environment influence[D].Qingdao:Qingdao Technological University,2009:14-86.
[8]王维说.深基坑排桩式支护结构选型研究[D].重庆:重庆大学,2007:9-80.WANG W S.Study on selection of soldier pile structure on deep foundation pit[D].Chongqing:Chongqing University,2007:9-80.
[9]蓝日彦.深基坑排桩支护土压力及变形的试验研究[D].南宁:广西大学,2002:7-71.LAN R Y.Test research on earth pressure and displacement of row pile retaining and protecting in deep foundation pit engineering[D].Nanning:Guangxi University,2002:7-71.
[10]ABDOUN T,DOBRY R.Evaluation of pile foundation response to lateral spreading[J].Soil Dyn Earthq Eng,2002,22:1051-1058.
[11]LEE C J.Numerical analysis of pile response to open face tunneling in stiff clay[J].Comput Geotech,2013,51:116-127.
[12]HONG S H,LEE F H,YONG K Y.Three-dimensional pile-soil interaction in soldier-piled excavations[J].Comput Geotech,2003,30:81-107.
[13]夏雄.一种深基坑支护桩间距的确定方法[J].铁道建筑,2005(7):71-73.XIA X.A determination of spacing between retaining piles for deep foundation pit[J].Railway Eng,2005(7):71-73.
[14]王琼.边坡防治工程中抗滑桩合理桩间距的探讨[J].国外建材科技,2006,27(2):51-60.WANG Q.A study of rational space between anti-slide piles in slope projects[J].Sci Technol Overseas Build Mater,2006,27(2):51-60.