悬索无应力索长精确解  

Exact Solution of the Unstressed Cable Length for Suspension Cable

作　　者：张志国[1] 张晓民[2] 邹振祝[1] 

机构地区：[1]哈尔滨工业大学,哈尔滨150001 [2]石家庄铁道学院,石家庄050043

出　　处：《东北公路》2003年第4期86-87,共2页Northeastern Highway

摘　　要：以不等高支点悬索为计算模型 ,推导了抛物线和悬链线悬索无应力索长精确解 ,通过分析说明目前主要采用一阶近似来计算无应力索长。算例表明这些计算公式正确无误 ,可以用于工程计算。Using the suspension cable with the unequal height supports as calculation model,the exact solutions of the unstressed calble length for parabola and catenary curve are derived.At the same time it is explained that at the present the fist-order approximate solutions are applied usually to calculate the unstressed cable length.The results show that the formulas are correct and can be used in the actual engineering.=

关 键 词：桥梁工程 悬索 无应力索长 抛物线值 悬链线值 弹性模量 水平张力 

分 类 号：U442.3[建筑科学—桥梁与隧道工程]