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中文摘要：
跨越既有公路的预应力连续梁拆除，存在周边环境的制约因素较大，常规的工法不能实现的困难。通过技术研究比较，采用试验与工程实例相结合的办法，研究绳锯切割结合千斤顶拖拉法拆除，使得拆除工程对环境的影响降至最小，也不影响桥下省道的交通通行，取得了预期的成效。
英文摘要：
The demolition of a prestressed continuous beam crossing existing highway can not be achieved by conventional method, and there is a big restriction factor in the surrounding environment. In this paper, through the comparison of tech- nique research, the study on the removal of the rope saw cutting combined with pulling method was carried out on the basis of combining experiment and engineering example. The impact of the demolition project on the environment was reduced to the minimum, and the highway traffic under the bridge was not affected, thus the expected results were achieved.
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