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（北京市建筑設(shè)計(jì)研究院有限公司， 北京 100045）
［摘要］《高層建筑混凝土結(jié)構(gòu)技術(shù)規(guī)程》（JGJ 3—2010）第3-11-4條第2款規(guī)定：彈塑性分析時(shí)，復(fù)雜結(jié)構(gòu)應(yīng)進(jìn)行施工模擬分析，并以施工全過程完成后的內(nèi)力作為初始狀態(tài)。根據(jù)該條規(guī)定，多數(shù)情況下施工模擬成為結(jié)構(gòu)大震彈塑性分析的必要準(zhǔn)備工作。為實(shí)現(xiàn)施工模擬后的內(nèi)力與后續(xù)地震波作用下的彈塑性內(nèi)力無縫對接，防止出現(xiàn)地震波作用初期出現(xiàn)結(jié)構(gòu)不平衡所產(chǎn)生的不穩(wěn)定現(xiàn)象，保證彈塑性分析最終結(jié)果的可靠性，提出了一種專用的非線性施工模擬算法，該算法直接采用非線性單元以及材料彈塑性本構(gòu)關(guān)系進(jìn)行計(jì)算，解決了傳統(tǒng)線性施工模擬算法存在的問題，并進(jìn)行了加速處理。
［關(guān)鍵詞］非線性； 施工模擬； 彈塑性分析； 有限單元法
中圖分類號：TU375文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2019)18-0126-05
A new nonlinear construction simulation algorithm for elastoplastic analysis
Wu Yunpeng, Han Bo, Guo Feng, Miao Qisong
（Beijing Institute of Architectural Design, Beijing 100045, China）
Abstract:Clause 3-11-4, Section 2 of Technical specification for concrete structures of tall building (JGJ 3—2010) stipulates that construction simulation analysis should be used for complex structures in the elastoplastic analysis, and the final internal force of construction simulation should be taken as the initial state of the elastoplastic analysis. Therefore, construction simulation is a necessary preparation for elastoplastic analysis of structures under rare earthquakes. In order to realize the seamless connection between the internal force after construction simulation and the elastoplastic internal force under the action of subsequent seismic waves, to prevent the instability caused by structural imbalance in the initial stage of seismic wave action and to ensure the reliability of the final result of elastoplastic analysis, a special nonlinear construction simulation algorithm was proposed, which directly uses nonlinear elements and material elastoplastic constitutive relations to do calculation, solves the problems existing in the traditional linear construction simulation algorithm, and accelerates the processing.
Keywords:nonlinear analysis; construction simulation; elastoplastic analysis; finite element method
作者簡介：武云鵬，博士，正高級工程師，Email：wuyunpeng@biad.com.cn。
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