管-土相互作用的试验研究
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摘要
根据埋地供水管道与地基土的相互关系,设计了简易的管-土动力学试验装置,测定了不同轴向震动加速度下管-土抗力和管-土相对位移值,试验结果表明:最大管土抗力、管土滑动临界位移、土弹簧系数等都与震动加速度、管道埋深和管材有关;单位接触面积管-土最大抗力,铸铁管在5～25N/cm~2,PE管在2.1～6.9N/cm~2;土体弹性极限位移很小,约在0.1～0.4mm之间;等效土弹簧系数,铸铁管:4～8N/mm/mm,PE管:0.3～1.0N/mm/mm。
According to the relationship between the water-supply buried pipeline and the foundation soil,the simple soil-pipe dynamic experimental devices were designed.The soil resistance to pipe and the soil-pipe relative displacement were determinated under the different axial vibration accelerations.The experiment results showed that the maximum soil resistance to pipe,the soil-pipe sliding critical displacement and the soil spring constant etc.depend on the vibration acceleration,depth of pipe and pipe materials.The experiments also showed that the maximum soil resistance to pipe on unit contacting area of cast-iron pipe is between 5N/cm to 25N/cm,and which of PE-pipe is between 2.1N/cm~2 to 6.9N/cm~2;the soil elastic limit displacement is very small and only about 0.1mm to 0.4mm;the equivalent soil spring constant of cast-iron pipe is between AN/mm/mm to SN/mm/mm,and which of PE-pipe is between 0.3N/mm/mm to 1.0N/mm/mm.
According to the relationship between the water-supply buried pipeline and the foundation soil,the simple soil-pipe dynamic experimental devices were designed.The soil resistance to pipe and the soil-pipe relative displacement were determinated under the different axial vibration accelerations.The experiment results showed that the maximum soil resistance to pipe,the soil-pipe sliding critical displacement and the soil spring constant etc.depend on the vibration acceleration,depth of pipe and pipe materials.The experiments also showed that the maximum soil resistance to pipe on unit contacting area of cast-iron pipe is between 5N/cm to 25N/cm,and which of PE-pipe is between 2.1N/cm~2 to 6.9N/cm~2;the soil elastic limit displacement is very small and only about 0.1mm to 0.4mm;the equivalent soil spring constant of cast-iron pipe is between AN/mm/mm to SN/mm/mm,and which of PE-pipe is between 0.3N/mm/mm to 1.0N/mm/mm.
引文
[1]侯忠良.地下管线抗震[M].北京:学术书刊出版社,1990 Hou Zhongliang.Seismic research on buried pipelines[M].Beijing: Xueshushukan Press,1990:1 - 36
[2]李杰.生命线工程抗震—基础理论与应用[M].北京:科学出版社,2005 Li Jie.Lifeline earthquake engineering[M].Beijing:Science Press, 2005:51-58
[3]吴少艳,吴德军,陈东.地震对市政管道的破坏及管道的抗震处理[J].地震工程与工程振动,2006,26(3):200-202 Wu Shaoyan,Wu Dejun,Chen Dong.Earthquake damage to municipal pipes and seismic treatment[J].Earthquake Engineering and Engineering Vibration.2006,26(3):200 - 202
[4]Rourke T.D.,Grigoriu,M.D.,Khater M,M.Seismic response of buried pipelines[M].Pressure Vessel Piping Technol,ASME,1985: 281 - 323
[5]国家标准.室外给水排水和燃气热力工程抗震设计规范GB5003-2003[S].北京:建筑工业出版社,2003 GB5003-2003,Cede for seismic design of outdoor water supply,sewerage gas and heating engineering[S].Beijing:Building industry Press,2003
[6]韩阳,孙绍平.地下管道抗震分析中的若干参数[J].特种结构,1999,16(3):14-16 Han Yang,Sun Shaoping.Number of parameters in the seismic analysis of buried pipelines[J].Special Structures.1999,16(3):14 - 16
[7]王汝樑.地下管线的震害、抗震验算、设计与措施[M].北京:地震出版社,2007:125-146 Wang Ruliang.Buried lifeline earthquake engineering and related research [M].Beiing:Seismological Press,2007:125 - 146
[8]甘文水,侯忠良.地震行波作用下埋设管线的反应计算[J].地震工程与工程振动,1988,8(2):79-86 Gan Wenshui,Hou Zhongliang.Analysis of pipeline responses to seismic wave propagation[J].Eardiquake Engineering and Engineering Vibration. 1988,8(2):79 - 86
[2]李杰.生命线工程抗震—基础理论与应用[M].北京:科学出版社,2005 Li Jie.Lifeline earthquake engineering[M].Beijing:Science Press, 2005:51-58
[3]吴少艳,吴德军,陈东.地震对市政管道的破坏及管道的抗震处理[J].地震工程与工程振动,2006,26(3):200-202 Wu Shaoyan,Wu Dejun,Chen Dong.Earthquake damage to municipal pipes and seismic treatment[J].Earthquake Engineering and Engineering Vibration.2006,26(3):200 - 202
[4]Rourke T.D.,Grigoriu,M.D.,Khater M,M.Seismic response of buried pipelines[M].Pressure Vessel Piping Technol,ASME,1985: 281 - 323
[5]国家标准.室外给水排水和燃气热力工程抗震设计规范GB5003-2003[S].北京:建筑工业出版社,2003 GB5003-2003,Cede for seismic design of outdoor water supply,sewerage gas and heating engineering[S].Beijing:Building industry Press,2003
[6]韩阳,孙绍平.地下管道抗震分析中的若干参数[J].特种结构,1999,16(3):14-16 Han Yang,Sun Shaoping.Number of parameters in the seismic analysis of buried pipelines[J].Special Structures.1999,16(3):14 - 16
[7]王汝樑.地下管线的震害、抗震验算、设计与措施[M].北京:地震出版社,2007:125-146 Wang Ruliang.Buried lifeline earthquake engineering and related research [M].Beiing:Seismological Press,2007:125 - 146
[8]甘文水,侯忠良.地震行波作用下埋设管线的反应计算[J].地震工程与工程振动,1988,8(2):79-86 Gan Wenshui,Hou Zhongliang.Analysis of pipeline responses to seismic wave propagation[J].Eardiquake Engineering and Engineering Vibration. 1988,8(2):79 - 86
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