装配式斜交空心板桥内力的一种简化计算方法  

A Simplified Calculation Method of Internal Force of Fabricated Skew Hollow Slab Bridge

作　　者：欧阳祥森[1,2] 张东波 邹洪波[1,2] 王军[1] 

机构地区：[1]湖南工程学院,湖南湘潭411104 [2]中南大学土木工程学院,湖南长沙410075 [3]广西交通规划勘察设计院,广西南宁530029

出　　处：《公路交通科技》2014年第9期76-81,共6页Journal of Highway and Transportation Research and Development

基　　金：湖南省教育厅资助项目(13C181;12C0635;13B016)

摘　　要：建立了装配式斜交空心板桥的全桥空间模型,计算了相同跨径、相同板块数正交空心板桥和相应不同斜交角度斜交空心板桥桥关键截面的内力影响面。用自编影响面加载程序求得正交空心板桥和斜交空心板桥关键截面的最不利荷载内力效应值。将斜交板桥内力效应值与正交板桥内力效应值的比值定义为斜交角内力折减系数,建立了斜交空心板桥内力简化计算折减系数表。分析了斜交角度、板块梁高对折减系数的影响,提出了一种简单实用的斜交空心板桥内力计算方法供工程设计参考。A full-bridge space model of fabricated hollow slab bridge is established to calculate the influence surfaces of internal force for critical section of orthogonal hollow slab bridge which has the same span and number plates,and skew hollow slab bridge which has different oblique angles. Then,the most unfavorable internal force effect values for key sections of orthogonal hollow slab bridge and skew hollow slab bridge are calculated by self-developed influence surface loading program. The ratio of skew hollow slab bridge＇s internal force effect value to orthogonal hollow slab bridge＇s internal force effect value is defined as the reduction factor of oblique angle internal force,and a reduction factor table for simplified calculation of internal force of skew hollow slab bridge is established. After analyzing the influences of oblique angle and beam depth on the reduction factor,a simpler and more practical calculation method of skew internal force of hollow slab bridge is presented for engineering design reference.

关 键 词：桥梁工程 装配式斜交空心板桥 有限元模型 影响面 折减系数 

分 类 号：U441.5[建筑科学—桥梁与隧道工程]