摘要
根据恒载条件下横桥向双支座反力相等原则,对曲线梁桥设计中常见但尚无定论的支座偏心问题提出了2种计算方法,即最小偏心法和一致偏心法。本文阐述了2种方法的计算原理,推导了圆曲线下相应计算公式,并结合实际工程给出了实用计算表格,比较了2种方法的优缺点,探讨了通常偏心值随曲线半径R、跨数及集中分布荷载比GP/Gq的增大而减小的规律。
Two methods about how to calculate the bearing off-center of curved beam bridge are presented,which is common but no conclusion now. The two methods are minimum off-center method and coincidence off-center method. The principles of the two methods are explained, the formulas and calculation tables with practical engineering are given, and the two methods compared. Last ,it is indicated that the off-center values decrease commonly with the increase of curve radius R,number of span and the value GP/Gq.
出处
《公路》
北大核心
2006年第8期113-116,共4页
Highway
关键词
曲线梁桥
支座
偏心
计算方法
curved beam bridge
bearing
off-center
calculation method
