摘要
通过对杭州市城市道路检查井及周边路面破坏情况进行调查,对沉陷量、破坏范围等进行测量,采用有限元分析在交通荷载作用下检查井应力变化规律。结果表明,在交通荷载作用过程中,在井盖砼垫层边缘会出现较大的拉应力,同时在井座砼垫层和砌体外边缘处路面面层内会出现反复剪切应力。循环交通荷载、垫层拉应力以及反复剪切应力是导致垫层破碎和路面开裂的主要原因。
Through investigating the damages of manholes and asphalt concrete pavement nearby in Hangzhou City,measuring the subsidence and damage range,it analyzed the stresses of manholes under traffic loads using finite element method.The result indicated that there appeared greater tensile stress and repeated shear stresses in concrete cushions of manhole covers and asphalt concrete connecting to brick masonry′s outer edge undergone.Repeated traffic loads,tensile stresses and repeated shear stresses were the main factors causing the damages of concrete cushions and cracking of asphalt concrete.
出处
《交通标准化》
2011年第19期134-138,共5页
Communications Standardization
关键词
检查井
交通荷载
现场调查
有限元法
manhole
traffic loads
in-site investigation
finite element method
