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（1 金陵科技學(xué)院建筑工程學(xué)院, 南京 211169; 2 河海大學(xué)土木與交通學(xué)院, 南京 210098）
［摘要］目前通用有限元軟件所采用的開裂迭代策略往往無法精確、高效模擬混凝土結(jié)構(gòu)開裂過程。在分析研究現(xiàn)有混凝土開裂準(zhǔn)則、裂縫模型以及開裂迭代策略的基礎(chǔ)上，提出基于“優(yōu)先開裂”準(zhǔn)則的混凝土結(jié)構(gòu)開裂迭代策略，并將其用于混凝土簡支梁開裂仿真分析。分析結(jié)果表明：該開裂迭代策略無需重新劃分網(wǎng)格、可連續(xù)自動(dòng)根據(jù)開裂積分點(diǎn)順序精確模擬裂縫產(chǎn)生、擴(kuò)展全過程，其計(jì)算結(jié)果與混凝土結(jié)構(gòu)實(shí)際開裂情況較為吻合。
［關(guān)鍵詞］混凝土; 開裂迭代策略; “優(yōu)先開裂”準(zhǔn)則
中圖分類號：TU375文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2016)15-0085-06
Whole process analysis of cracking development of three-dimensional concrete structure based on principle of “preferential cracking”
Wang Panxiu1,2， Zhao Haitao2， Xuan Weihong1， Chen Yuzhi1
(1 Architectural Engineering Institute, Jinling Institute of Technology, Nanjing 211169, China;2 College of Civil and Transportant Engineering, Hohai University, Nanjing 210098, China)
Abstract:At present, the cracking iterative strategy adopted by general finite element software is often unable to accurately and efficiently simulate the cracking process of concrete structures. Based on the analyses of the existing concrete cracking criterion, crack model and cracking iterative strategy, cracking iteration strategy of concrete structure based on “preferential cracking” criteria was proposed and was used for the simulation analysis of simply supported concrete beam cracking. Analysis results show that the cracking iteration strategy does not need remeshing and can accurately simulate cracking generation and expansion process according to the cracking points order continuously and automatically. The calculated results are consistent with the actual cracking condition of the concrete structure.
Keywords:concrete; cracking iteration strategy; principle of “preferential cracking”
*江蘇省住房和城鄉(xiāng)建設(shè)廳基金(K42011361),金陵科技學(xué)院科研基金(2014-jit-n-04)。
作者簡介：王潘繡，博士，講師，Email:Wangpanxiu@jit.edu.cn。
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