电梯井道与既有建筑弱连接节点受力性能分析  

Analysis of Mechanical Performance of Weak Connecting Node between the Elevator Shaft and Existing Building

作　　者：张宪江[1] 李超 谢恩普 ZHANG Xianjiang;LI Chao;XIE Enpu(School of Civil Engineering,Huzhou Vocational and Technical College,Huzhou 313000,China)

机构地区：[1]湖州职业技术学院建筑工程学院,湖州313000

出　　处：《结构工程师》2022年第3期40-46,共7页Structural Engineers

基　　金：浙江省教育厅科研项目资助(Y202045069);湖州市自然科学基金项目(2019YZ08)。

摘　　要：针对增设电梯技术上比较复杂、难以处理的井道与既有建筑之间的连接问题,基于典型的“弱连接”节点,对其受力性能进行了理论分析和ANSYS有限元仿真分析。分析结果显示,“弱连接”对既有建筑的影响较小,但连梁长度对“弱连接”节点内力的影响较大。当连梁长度很小时,Z向目标位移对节点内力的影响不容忽视;特别地,Y向目标位移作用下节点中的应力可能超过钢材的设计强度,应当引起足够重视。建议采用“弱连接”构造时取适宜的连梁长度,且在整体分析的基础上对连接节点合理设计,以确保节点安全有效。Aiming at the connection problem between elevator shaft and existing building,which is complex and difficult to deal with,based on the typical“weakly connection”structure,its mechanical performance is carried out by theoretical and ANSYS simulation analysis.Analysis results shown that the influence of“weakly connection”on existing building is small,but the influence of the coupling beam’s length on the internal force of“weakly connection”joints is large.When the coupling beam’s length is very small,the influence of Zdirection target displacement on the internal force of the joint cannot be ignored;In particular,stress in the joint under Y-direction target displacement may exceed the design strength.It is suggested that appropriate coupling beam’s length should be taken when using“weakly connection”structure,and should be reasonably designed which is based on the overall analysis to ensure safety of the connection joints.

关 键 词：钢结构井道 弱连接 弹塑性分析 有限元 ANSYS 

分 类 号：TU857[建筑科学]