摘要
针对某跨海大桥空心板板底出现有规律的纵向裂缝,运用薄壁结构理论对薄壁空心板进行畸变分析,结合能量法和有限条法计算活载作用下薄壁空心板的畸变应力,并对现行空心板标准图的畸变进行了验算,同时进行了现场荷载试验,理论分析结果和试验结果证明薄壁结构的畸变效应是导致空心板板底出现纵向裂缝的主要原因。
The thin-walled structural theory is employed to investigate the regular longitudinal cracks of the thin-walled hollow slab of a sea-crossing bridge. The energy method and finite strip method are conducted to calculate the distortion stress of the hollow slab under live load, and the distortion analysis of the current standard hollow slab is also presented. The theoretical analysis and the field load tests verify that the distortion effect is the dominant reason causing the longitudinal cracks of the hollow slab bottom.
出处
《公路》
北大核心
2007年第3期59-64,共6页
Highway
关键词
薄壁空心板
畸变
能量法
弹性地基梁
有限条法
thin-walled hollow slab
distortion
energy method
beam on elastic foundation
finite strip method
