多梁式斜梁桥荷载横向分布计算的方法  

A Calculation Method for Transverse Load Distribution of Skew Bridge with Parallel Beams

作　　者：房振叶[1] 季日臣[1] 毛松鹤[1] 

机构地区：[1]兰州交通大学土木工程学院,甘肃兰州730070

出　　处：《兰州交通大学学报》2006年第6期90-92,96,共4页Journal of Lanzhou Jiaotong University

基　　金：兰州交通大学"青蓝"人才工程基金资助项目(QL-05-13A)

摘　　要：根据多梁式斜梁桥结构及其横向受力特点,提出了“弹性支承刚性横梁法”进行跨中荷载横向分布的计算.计算时,刚性横梁弹性支承在各纵梁上,在单位移动荷载作用下,可求得横梁的弹性支承反力,其值即为纵梁的荷载横向分布影响线坐标值.通过最不利横向布载可求出斜梁桥跨中荷载横向分布系数,从而进行纵梁的受力计算,此法简单合理,为斜梁桥的设计提供了一种方便的途径.The elasticity support rigidity crossbeam method is brought forward according to orientation structure endure force character of skew bridge with multi-longitudinal beams. The rigidity crossbeam structure is supported elastically by every longitudinal beam in orientation calculation, and the elasticity supporting force is obtained with the unit move function of load. It is the transverse load distribution influence line coordinate value. Moreover, the transverse load distribution factor of the skew bridge midspan can be obtained through the most disadvantageous loading, and then the endure force of the longitudinal beams can be calculated. The method is very simple and reasonable. It provides one convenient approach for the skew bridge design.

关 键 词：斜梁桥 弹性支承刚性横梁法 荷载横向分布 

分 类 号：TU313.1[建筑科学—结构工程]