摘要
为了准确了解生米大桥施工门式膺架在施工中的抗风性能,长安大学风洞实验室对其进行风洞试验。对风洞试验得到的门式膺架的位移响应结果进行详细分析,得出该门式膺架在施工中不会出现动力不稳定和负载(门式膺架下吊上拱肋)时的位移比空载时大等结论,为类似工程问题提供参考。
To have an exact understanding of the wind-resistant performance of giant gantry used in course of construction of the Shengmi Bridge, the Wind Tunnel Laboratory, Chang＇an University was required to complete investigation of the performance of the gantry by wind tunnel tests. In this paper, the results of displacement response of the gantry obtained from the tests are analyzed in details, and conclusions are generalized that the dynamic instability of the gantry will not occur in the construction, and the displacement is greater when the gantry is loaded （arch is hoisted by the gantry） than that when the gantry is unloaded. The investigation and analysis herewith provide reference for resolving engineering problems of similar kinds.
出处
《世界桥梁》
北大核心
2005年第3期64-67,共4页
World Bridges
关键词
拱桥
门式膺架
动力特性
位移响应
风洞试验
试验分析
arch bridge
gantry
dynamic performance
displacement response
wind tunnel test
test and analysis
