【作者】 徐伟； 孙旻； 骆艳斌； 李劭晖；

【Author】 XU wei,SUN Min,LUO Yan-bin,LI Shao-hui (Structural Engineering Department,Tongji University,Shanghai 200092,China)

【机构】 同济大学建工系；

【摘要】 土中基础工程和水中承台工程是特大型桥梁建设的关键技术。针对在阳逻大桥首次采用的圆形嵌岩支护结构,利用多种监测技术对支护结构的变形和受力实现了实时控制,并结合三维有限元分析,对基坑进行了考虑施工过程的力学分析;通过数值方法,以苏通大桥为背景,对特大型钢吊箱在不同工况下的静力性能和动力特性进行了分析,获得了钢吊箱在施工全过程中的内力、变形、自振频率和振型,可供钢吊箱的设计和施工借鉴;更多还原

【Abstract】 Foundation pit and pier base are the important technologies of the construction for large bridge.It is the first time that the round rock-socketed retaining structure was used in such deep pit.During the excavation of the pit,the informational construction technology is widely used and the observation system is applied to control the deformation and the internal force of the retaining structure;Based on the construction experience of the Sutong bridge,static and dynamic behaviors of super steel suspension box under different construction cases were analyzed by numerical method,and the stresses,deformations,free vibration frequencies and modes were thus obtained.The results can be referred by design and construction of steel suspension box.更多还原