某大型混凝土屋架现有承载力的一种判定方法  

A judgmental method for existing bearing capacity of a long span concrete roof truss

作　　者：刘礼华[1] 杨斌[1,2] 陈尚建[1] 邓礼[1] 魏晓斌[1] 

机构地区：[1]武汉大学土木建筑工程学院,武汉430072 [2]湖北水利水电职业技术学院,武汉430070

出　　处：《建筑结构》2012年第12期105-107,共3页Building Structure

摘　　要：以某中央生活区会所屋架结构为工程背景,以屋架结构刚度方程及其所确定的位移、内力、荷载和刚度之间的对应增量关系为依据,在现场试验的基础上结合有限元计算分析,介绍了对大型混凝土屋架现有承载力进行判定的方法。并根据计算分析和静载试验的结果进行了屋架的结构安全性评价。从结构使用的角度,提出了屋架结构安全性评价意见。所采用的判定方法简便科学,对在役屋架的检测评价具有较好的实用推广价值。Based on the concrete roof truss of a club,according to the stiffness equation of the roof truss and the corresponding increment relations between displacement,internal force,load and stiffness determined by the stiffness equation,through field test combining with finite element analysis,a judgmental method for existing bearing capacity of the long span concrete roof truss structure was introduced.And based on the results of computational analysis and static test,the safety evaluation of roof truss was given.Some suggestions of safety evaluation were given.This method is convenient and scientific,and is valuable to spread.

关 键 词：刚度方程 静载试验 屋架 现有承载力 

分 类 号：TU311.1[建筑科学—结构工程] TU791