（杭州中联筑境建筑设计有限公司， 杭州 310011）

［摘要］针对鲁南高铁临沂北站结构所采用的带斜撑箱形钢管叠合柱型钢混凝土框架节点，介绍了一种通过AUTOLISP编程语言编辑INP文件的形式，快速建立ABAQUS有限元分析初始模型；应用ABAQUS中的塑性损伤模型，引入恰当的材料本构及损伤因子，模拟节点在最不利荷载组合及其极限荷载作用下的工作状况。通过分析得到节点区混凝土、钢筋、钢骨应力及混凝土损伤的发展规律，根据节点的荷载-位移曲线得出节点极限承载力。结果表明：该节点在设计荷载作用下承载力满足规范要求，且具有一定的安全储备。

［关键词］箱形钢管叠合柱；型钢混凝土框架节点；AUTOLISP编程

中图分类号：TU318文献标识码：A文章编号：1002-848X(2021)06-0013-06

Finite element analysis of steel reinforced concrete frame joints with inclined braced box-type steel tube composite columns

JIN Weiming, SUN Huilang, WU Jianle, LU Jun, ZHOU Yiman

(CCTN Architectural Design Co., Ltd., Hangzhou 310011, China)

Abstract:Aiming at the steel reinforced concrete frame joints with inclined braced box-type steel tube composite columns used in the structure of Linyi North Station of Lunan High-speed Railway, a form of editing INP file by AUTOLISP programming language to quickly establishing the initial finite element analysis model of ABAQUS was introduced. Applying the plastic damage model of ABAQUS, introducing the appropriate material constitution and damage factor, the working condition of joints under the most unfavorable load combinations and their ultimate loads were simulated. Through the analysis, the development law of concrete, steel bar, steel bone stress and concrete damage was obtained. According to the load displacement curve of the joint, the ultimate bearing capacity of the joint was obtained. The results show that the bearing capacity of the joint under the design load meets the requirements of the code, and has certain safety reserves.

Keywords:box-type steel tube composite column;steel reinforced concrete frame joint; AUTOLISP programming

作者简介：金卫明，学士，高级工程师，一级注册结构工程师，Email:591860831@qq.com。