Through the analysis on the cable-stayed bridge structure principle,introduced the construction technology to tall cantilever beam con-struction,solved the problems of tall cantilever beam construction erecting scaffold,provided a new construction method for tall cantilever beam operation.%通过对斜拉桥结构原理的分析，在高大悬挑梁施工上引入该施工工艺，解决了高大悬挑梁施工搭设脚手架的困难，为高大框架作业提出了一种新的施工方法。
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