中文摘要：

针对连续钢桁梁悬拼施工中的风荷载效应问题,以某下承式连续钢桁梁柔性拱桥悬拼施工为工程背景,建立三维有限元模型,分析了在不同风速时程作用下的动力响应对施工人员的影响。结果表明,横向风荷载是引起结构横桥向水平支反力的主要因素,而结构在三至六级风荷载作用下引起的横向振动不会对人体造成明显不适。

英文摘要：

Aimed at the wind load effect problem during the cantilever assembling construction of continuous steel truss girder, an under--supported continuous steel truss girder bridge with flexible arch was taken to build a 3D finite element model and analyze how the dynamic response under different wind speeds affects the construction workers. The results show that the horizontal wind load is the key factor that causes structure horizontal reaction force, while the transverse vibration caused by the wind load under level 3 to 6 won＇t discomfort workers noticeably.