混凝土曲梁预应力次扭矩简化计算方法  

Simplifying Calculation Method of Concrete Curved Beam Pre-stressing Secondary Torque

作　　者：袁建兵[1] 

机构地区：[1]上海市政工程设计研究总院,上海200092

出　　处：《城市道桥与防洪》2010年第2期34-36,40,共4页Urban Roads Bridges & Flood Control

摘　　要：该文首先针对两跨对称连续曲梁,推导了预应力次内力计算的理论公式,并进一步分析了弯扭耦合效应对次扭矩的影响,提出了预应力次扭矩的简化计算方法,并通过实例验证其可靠性。将该简化计算方法进一步推广,提出了多跨预应力连续曲梁次扭矩的简化计算方法,并用实例验证了其实用性,最后提出了简化计算方法的适用范围。The article deduces the theoretical formula to calculate the pre-stressing secondary inner force aiming at the symmetry continuous curved beam of two spans,and further analyzes the influence of crankle coupling effect on the secondary torque,puts forward the simplifying calculation method of pre-stressed secondary torque,and validates its reliability by the cases.This method is further spread and is put forward for the secondary torque of multi-span pre-stressed continuous curved beam,and its practicability is validated by the cases.The article finally puts forward the applicable range of this method.

关 键 词：连续曲梁 预应力效应 次扭矩 简化方法 

分 类 号：U442.5[建筑科学—桥梁与隧道工程]