摘要
针对天兴洲大桥2号墩浮运围堰施工冲刷,采用现行规范中的桥渡冲刷计算原理进行计算分析,初步认识冲刷计算式的结构特性;进行局部冲刷水槽试验,进一步深入研究分析行近水深、行近流速以及围堰入水深度对浮运围堰冲刷的影响;利用冲刷计算与试验结果,为2号墩浮运围堰施工期安排提供有力依据。
In the light of the local scouring that will be caused by floating construction of the cofferdam for Pier No. 2 of Tianxingzhou Bridge, the calculation principles of bridge crossing scouring in the current specifications are used to calculate and analyze the scouring of the floating construction of the cofferdam and preliminary understandings of the bridge structure based on the calculation in the specifications are obtained. The river channel tests for the local scouring are then made to further study and analyze the influences of water depth, water current of the ap- proaching cofferdam and depth of the cofferdam in the river on the scouring due to the floating construction. With the results of the calculation and tests for the scouring, the convincing bases of time arrangement for the floating construction are provided.
出处
《桥梁建设》
EI
CSCD
北大核心
2006年第A02期72-74,79,共4页
Bridge Construction
关键词
桥墩
围堰
局部冲刷
水槽试验
pier
cofferdam
local scouring
channel test
