单层轻钢厂房刚架梁和节点域的加固设计与分析  

Reinforcing design and analysis on beam and panel zone of monolayer light-weight gabled frame

作　　者：张涛[1] 王元清[1] 石永久[1] 杨文[1] 麻建锁[2] 

机构地区：[1]清华大学土木工程系清华大学结构工程与振动教育部重点实验室,北京100084 [2]河北建筑工程学院,河北张家口075000

出　　处：《四川建筑科学研究》2006年第3期49-52,共4页Sichuan Building Science

基　　金：河北省自然科学基金资助项目(E2006000653)

摘　　要：单层门式刚架轻钢厂房因使用功能改变,会出现构件的强度、刚度或节点承载性能不满足设计要求,需要对其进行加固。本文结合对某制药厂房的加固,采用有限元软件ANSYS对刚架梁和节点域加固方法进行分析计算。分析表明,采用加大原结构构件截面,设置斜向的加劲肋及加腋加固节点域可有效降低构件应力。由于加固前后的节点的受力状态有所不同,故在补强节点域和刚架梁的同时应验算刚架柱的强度。The shift of functions of monolayer light-gnuge steel frames may bring some potential risks that the stiffness and capacity of structural component is not sufficient, or the loading capacity of connections can not satisfy the requirement of design any more. Therefore, the reinforcement is applied to ensure the safety of the future use. A practical example and its reinforcement scheme are presented in this paper. The beams and columns of the frames are reinforcement by means of amplify their section areas; a single stiffer is used across the panel zone of the connection and a haunch is placed to support between beams and columns. The results of finite element analysis carded out by the software ANSYS verify the feasibility of the reinforcing scheme. However, it should be noticed that the employment of haunch slightly changes the mechanics in the vicinity of the connections, and sometime the checking for the loading capacity of columns is required.

关 键 词：门式刚架 加固设计 刚架节点 

分 类 号：TU312[建筑科学—结构工程]