大跨度PC连续刚构桥底板束配置长度的探究  

RESEARCH ON THE CONFIGURATION LENGTH OF LONG SPAN PC CONTINUOUS RIGID FRAME BRIDGE

作　　者：耿蒙蒙 李新平[1] 赵小龙 林明畅 GENG Mengmeng;LI Xinping;ZHAO Xiaolong;LIN Mingchang(School of Civil Engi. and Transportation, South China Univ. Of Technology, Guangzhou 510640, China)

机构地区：[1]华南理工大学土木与交通学院,广州510640

出　　处：《低温建筑技术》2018年第3期88-91,共4页Low Temperature Architecture Technology

摘　　要：利用结构力学力法的知识和弯曲应变能等效原则,推导出楔形杆为代表的变截面梁的弯矩表达式,得到PC连续刚构桥梁底板束的配置长度和底板束引起的跨中弯矩和跨中挠度的关系。对于设计人员配置预应力底板束具有一定的参考价值。Based on the knowledge of structural mechanics and the equivalent principle of bending strain energy, the bending moment formula of variable cross-section beam was deduced, such as wedge-shaped bar. The configuration length of the bottom beam of PC rigid frame bridge and the span- relationship between moment and mid span deflection. The research results can provide the bridge design with valuable reference.

关 键 词：弯曲应变能 底板束 跨中弯矩 跨中挠度 

分 类 号：TU323.3[建筑科学—结构工程]