摘要
钢管混凝土拱桥桥型美观、技术相对成熟,然而该类桥梁构件种类较多,施工复杂。为加快施工进度,增加快件的起吊重量不失为有效方法,但大块件吊装会带来稳定、塔架的安全等问题,其中塔架的抗风安全尤为重要。以南昌生米大桥主拱吊装为背景,研究了塔架及裸拱施工期间的抗风安全,并进行了风洞试验,得出了相关结论。
The steel pipe concrete arched bridge is gradually popular in China because of its type and mature technique. However, there are many categories of structural members in this bridge and construction is complex, so increasing the lift weight of the members to accelerate the construction progress is an effective method. But slinging the big members will bring about many problems such as stability, safety of pylon, especially the wind resisting safety. Regarding slinging of the main arch of Manchang Shengmi Bridge as the background, this paper discusses the wind resisting safety in construction period of pylon and barering, and does the wind tunnel tests.
出处
《筑路机械与施工机械化》
北大核心
2006年第3期41-43,共3页
Road Machinery & Construction Mechanization
关键词
钢管混凝土
龙门架
动力特性
风洞试验
涡激共振
steel pipe concrete
giant gantries
dynamic model
wind tunnel test
vortex inspiriting vibration
