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（杭州中聯(lián)筑境建筑設(shè)計(jì)有限公司， 杭州 310011）

［摘要］針對(duì)魯南高鐵臨沂北站結(jié)構(gòu)所采用的帶斜撐箱形鋼管疊合柱型鋼混凝土框架節(jié)點(diǎn)，介紹了一種通過(guò)AUTOLISP編程語(yǔ)言編輯INP文件的形式，快速建立ABAQUS有限元分析初始模型；應(yīng)用ABAQUS中的塑性損傷模型，引入恰當(dāng)?shù)牟牧媳緲?gòu)及損傷因子，模擬節(jié)點(diǎn)在最不利荷載組合及其極限荷載作用下的工作狀況。通過(guò)分析得到節(jié)點(diǎn)區(qū)混凝土、鋼筋、鋼骨應(yīng)力及混凝土損傷的發(fā)展規(guī)律，根據(jù)節(jié)點(diǎn)的荷載-位移曲線得出節(jié)點(diǎn)極限承載力。結(jié)果表明：該節(jié)點(diǎn)在設(shè)計(jì)荷載作用下承載力滿足規(guī)范要求，且具有一定的安全儲(chǔ)備。

［關(guān)鍵詞］箱形鋼管疊合柱；型鋼混凝土框架節(jié)點(diǎn)；AUTOLISP編程

中圖分類(lèi)號(hào)：TU318文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：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

作者簡(jiǎn)介：金衛(wèi)明，學(xué)士，高級(jí)工程師，一級(jí)注冊(cè)結(jié)構(gòu)工程師，Email:591860831@qq.com。