交通荷载作用下地下排水管道动力反应分析  

Dynamic Response Analysis of Underground Drainage Pipeline under Traffic Load

作　　者：徐伟[1] 李世坤 王壬 徐建国[1] XU Wei;LI Shikun;WANG Ren;XU Jianguo(School of Water Conservancy and Environment,Zhengzhou University,Zhengzhou,China,450001;The Amy Infantry Academy of PLA,Shijiazhuang,China,050200)

机构地区：[1]郑州大学水利科学与工程学院,河南郑州450001 [2]中国人民解放军陆军步兵学院石家庄校区,河北石家庄050200

出　　处：《沈阳建筑大学学报（自然科学版）》2021年第2期314-323,共10页Journal of Shenyang Jianzhu University：Natural Science

基　　金：国家自然科学基金面上项目(52079128);河南省科技攻关项目(182102210013,212102310289)。

摘　　要：目的研究车辆多轮动载对地下排水管道的动力反应,验证高聚物注浆对管道力学性能修复效果。方法利用ABAQUS软件建立带有承插结构的排水管道三维数值模型,并通过编写Dload子程序实现对前后轴4个不同轮载的施加。计算分析了管道在正常埋置、底部脱空和高聚物注浆修复3种工况下的动力反应,并对比了不同管道埋深、不同车辆荷载和不同车速对管道的动力反应的影响。结果数值分析结果与试验值较为接近,数值模型具有正确性和可靠性;随着管道埋深的增加,土压力呈线性增加;交通荷载越大对管道越不利;交通荷载对管道产生的应变和位移随移动车速的增加呈减小趋势。结论高聚物注浆可以有效地修复底部脱离的管道。Dynamic response of vehicle′s multi-wheel dynamic load to the underground drainage pipeline is studied in order to verified repair effect of pipeline by polymer grouting.The 3D numerical model of the drainage pipeline with socket structure is established by ABAQUS finite element software.And four wheel loads on the front and rear axle are implemented by Dload subroutine written.The dynamic response of the pipeline under three working conditions of normal burial,bottom evacuation and polymer grouting repair was calculated and analyzed,and the effects of different pipeline burial depths,different vehicle loads and different vehicle speeds on the dynamic response of pipeline were compared.The results show that polymer grouting can effectively repair pipe that has detached from the bottom.And the numerical analysis results are close to the experimental values,which indicates the accuracy and reliability of numerical model.The numerical analysis results show that with the increase of the pipeline depth,the earth pressure increases linearly.The larger the vehicle load is,the more unfavorable the pipeline.The strain and displacement of the vehicle load on the pipeline decrease with the increase of moving speed.

关 键 词：交通荷载 埋地管道 高聚物注浆修复 数值模拟 

分 类 号：TU992[建筑科学—市政工程]