交通荷载作用下埋地承插口排水管道动力响应分析  

Dynamic response analysis of drainage pipes with gasketed bell and spigot joints subjected to traffic loads

作　　者：王复明[1,2,3] 方宏远 李斌[1,2,3] 陈灿 WANG Fu-ming3;FANG Hong-yuan;LI Bin;CHEN Can(College of Water Conservancy & Environmental Engineering, Zhengzhou University, Zhengzhou 450001, China;2 National Local Joint Engineering Laboratory of Major Infrastructure Testing and Rehabilitation Technology, Zhengzhou 450001, China;Collaborative Innovation Center of Water Conservancy and Transportation Infrastructure Safety, Zhengzhou 450001, China)

机构地区：[1]郑州大学水利与环境学院,河南郑州450001 [2]重大基础设施检测修复技术国家地方联合工程实验室,河南郑州450001 [3]水利与交通基础设施安全防护河南省协同创新中心,河南郑州450001

出　　处：《岩土工程学报》2018年第12期2274-2280,共7页Chinese Journal of Geotechnical Engineering

基　　金：国家重点研发计划(2016YFC0802400);河南省重大科技专项(171100310100);河南省高校科技创新团队支持计划资助项目(18IRTSTHN007);郑州大学优秀青年教师发展基金项目(1621323001)

摘　　要：近年来,由于市政排水管道灾变导致的道路坍塌事故频发,水泥混凝土管是目前应用最为广泛的市政排水管道,其在交通荷载作用下的力学响应特征尚不明确。基于ABAQUS有限元软件,建立了带承插口结构排水管道三维数值模型。在考虑承插口、橡胶圈和无限元吸收边界等的基础上计算分析了不同脉冲幅值、不同荷载作用位置和不同管道埋深对管道动力响应的影响。结果表明:管节处受力高度不连续,交通荷载对其作用位置两侧一节管长范围内的管道影响显著;承口和插口环向以受拉和受压为主;交通荷载作用位置对管顶、管底和管侧纵向Mises应力最大值无明显影响,但对管顶和管底纵向Mises应力分布有影响;管道纵向Mises应力及环向竖向应力与管道埋深成正比,应力增量与埋深增量成反比。计算结果为进一步研究交通荷载作用下排水管道的力学机理提供参考。In recent years, the road collapse accidents caused by the disasters of municipal drainage pipelines occurred frequently. The concrete pipe is the most widely used in municipal drainage, but its mechanical characteristics under the action of traffic loads are not clear. A three-dimensional numerical model for drainage pipe structures with gasketed bell and spigot joints is established using ABAQUS. The influences of different pulse amplitudes, load positions and pipe buried depths on the dynamic responses of drainage pipes are calculated and analyzed considering the bell, spigot, rubber and infinite element absorption boundary. The results show that the stresses on the joints are highly discontinuous, and the traffic loads have significant influences on the pipes within one pipe length at both sides of its position. The circumference of the bell and spigot is mainly subjected to tension and compression stress. The position of traffic loads has no significant effects on the maximum Mises stress in the crown, invert and springline, but has influences on the Mises stress distribution of the crown and invert. The longitudinal and circumferential stresses are proportional to the buried depth, however, the stress increment is inversely proportional to the depth one.

关 键 词：排水管道 承插口 橡胶圈 脉冲荷载 动力响应 

分 类 号：TU990.3[建筑科学—市政工程]