摘要
对于新型GFRP组合桥梁,通过考虑GFRP桥面板与工字型钢纵梁组合共同受力,分析了跨长、纵梁间距、主梁尺寸及横撑刚度等各参数对桥梁横向荷载分布系数的影响。通过不同工况有限元数值分析,可知纵梁间距、跨长、纵梁位置及纵梁尺寸对荷载横向分布系数有重要的影响,横撑的刚度对跨度小于20m桥梁的横向分布系数有一定的影响。此结论对新型GFRP组合梁桥横向荷载分布系数确定有重要参考价值,并为桥梁设计提供了有效依据。
Based on an analysis of the mutual action of GFRP deck and I-shaped longitudinal steel beam, different parameters of the influence on transversal live-load distribution factor are analyzed. By analyzing structural deflection and stress under different operating mode, it is known that the space between longitudinal beam, the span length, the location of longitudinal beam and the size of main beam have important influence on the transversal live-load distribution factor, and the stiffness of cross stay has influence on the transversal live-load distribution factor when the span length is less than 20 m. The presented conclusion can be referenced for computing the transversal live-load distribution factor of GFRP composite beam bridge.
出处
《石家庄铁道学院学报》
2007年第1期98-103,共6页
Journal of Shijiazhuang Railway Institute
关键词
GFRP组合梁桥
横向荷载分布系数
有限元计算
参数分析
GFRP composite beam bridge
transversal live-load distribution factor
finite element calculation
parametric analysis
