高架桥下路面不均匀沉降机理及车辆荷载影响研究  

Research on Uneven Settlement Mechanism and Vehicle Load Influence of Pavement under Viaduct

作　　者：肖昊 叶长宏[2] 宋文超 李小青[1] XIAO Hao;YE Changhong;SONG Wenchao;LI Xiaoqing(School of Civil Engineering and Mechanics HUST,Wuhan 430074,China;Construction Engineering Design Review Office of Wuhan,Wuhan 430000,China)

机构地区：[1]华中科技大学土木工程与力学学院,武汉430074 [2]武汉市建设工程设计审查办公室,武汉430000

出　　处：《交通科技》2018年第2期8-11,共4页Transportation Science & Technology

摘　　要：软土地基道路的不均匀沉降是影响正常使用的主要因素。为了研究高架桥下路面不均匀沉降的机理和车辆荷载对高架桥下桥墩间路面不均匀沉降的影响,运用midas GTS NX软件对高架桥下路面的不均匀沉降及车辆荷载以后的效果进行模拟分析。分析表明,在软土地基上,高架桥墩的存在会导致路基的不均匀沉降;车辆动载会加剧路基的不均匀沉降。因而提出在软土路基段采取限制大车靠桥墩处行驶及限制车速这2个措施,可改善靠近桥墩处道路的不均匀沉降。In the construction of roads on soft soil foundation,the uneven settlement of roads is the main factor affecting the normal use of roads.In order to study the mechanism of uneven settlement of pavement under viaduct and the influence of vehicle load on the uneven settlement of pavement,the midas GTS NX software is used to simulate the uneven settlement of under-viaduct and the effect after vehicle load.The actual situation shows that the existence of viaduct piers can lead to uneven subgrade settlement on soft ground.The oretical studies show that the dynamic load of vehicles will aggravate the uneven subsidence of roadbed.According to the results of the analysis,two measures are proposed to limit the roadway near the piers by limiting the driving of large carts at the piers and limiting the speed of vehicles in the soft soil subgrade sections.

关 键 词：高架桥 软土 路面不均匀沉降 车辆荷载 

分 类 号：U416[交通运输工程—道路与铁道工程]