摘要
利用大型移动式足尺加速加载设备MLS66,通过现场百万次加载的全程监控和动态分析,从湿度状态、模量衰减、塑性变形累积等方面,揭示了自然环境和反复荷载耦合作用下公路结构的工作状态和工程响应特征,全面论证了利用长江口细砂填筑高等级公路低填路基的可行性,为公路长期性能保障措施的设计与实施奠定了科学的基础,并且根据长江口细砂的工程特性实现了公路建设的资源节约化。
Movable full-size APT instrument MLS66 was adopted to systematically monitor the Yangtze Estuary's Fine Sand subgrade responses under million times loading tests in site.The working condition and response characteristics with the coupling action of natural environment and repeated loads were presented from the aspects of humidity condition,modulus decay and plastic deformation accumulation etc.It demonstrated the feasibility of the Yangtze Estuary's fine sand filling low embankment of expressway.It would be fundamental theory for the expressway subgrade design and sustaining long term performance.,which can realized the resource saving of expressway construction
出处
《上海公路》
2012年第2期93-95,102,共4页
Shanghai Highways
基金
上海市科委项目(08201202400)
关键词
长江口细砂
崇启通道
应用
Yangtze Estuary's Fine sand
Chongming-Qidong Link
Application
