某大跨混凝土连续梁桥拆除技术  

The Demolition Technology of a Concrete Continuous Beam Bridge

作　　者：王健伟[1] 陈斌[1,2] 

机构地区：[1]杭州市市政设施监管中心,浙江杭州310003 [2]浙江大学建筑工程学院,浙江杭州310058

出　　处：《施工技术》2012年第S1期217-221,共5页Construction Technology

摘　　要：针对某一市区跨越航道的桥梁拆除工程,根据现场实际,制定了采用混凝土切割,龙门架吊装、船舶拖运等方法,以及逆于建造施工顺序的梁体对称分块切割的拆除方案。通过有限元建模等计算,验证了方案的可行性,确保了拆除施工过程的安全。桥梁整个拆除过程,对环境影响较小,达到了预期目标。The authors present a demolition scheme for an old urban bridge across the Beijing-Hangzhou Grand Canal.According to the actual environment,the project adopts the concrete cutting,gantry hoisting,ship hauling and other methods,and reverses the construction sequence to symmetrically removal the beam concrete blocks.The finite element simulation is used to verify the feasibility and the safety of the dismantling process.The entire process has less impact on the environment and meets the requirements of traffic and the environment.

关 键 词：桥梁 拆除 切割法 吊装 

分 类 号：U445.6[建筑科学—桥梁与隧道工程]