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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］建筑結(jié)構(gòu)中的剪力墻與框架梁的平面內(nèi)連接是一個(gè)較難解決的問題，原因主要是由于框架梁是一維單元，僅由單一結(jié)點(diǎn)與剪力墻相連，若不加處理，即使剪力墻單元在平面內(nèi)含有旋轉(zhuǎn)自由度，墻與梁的連接剛度依然會過低（接近于鉸接），不能正確傳遞位移和內(nèi)力，從而導(dǎo)致計(jì)算結(jié)果失真。為改善這一問題，提出了三種剪力墻與框架梁的連接過渡處理方法：罰單元法、直接消去法以及過渡單元法。數(shù)值試驗(yàn)表明，罰單元法、直接消去法以及過渡單元法具有廣泛的適應(yīng)能力，可對連接部位自動處理并給出合理的計(jì)算結(jié)果。目前上述算法已在北京市建筑設(shè)計(jì)研究院有限公司自主研發(fā)的設(shè)計(jì)軟件Paco中完整實(shí)現(xiàn)，并取得了良好的應(yīng)用效果。
［關(guān)鍵詞］有限元； 剪力墻； 框架梁； 罰單元
中圖分類號：TU375文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2016)17-0063-05
Research on connection transition algorithm of shear wall and frame beam
Wu Yunpeng
（Beijing Institute of Architectural Design, Beijing 100045, China）
Abstract:In-plane connection between shear wall and frame beam in building structure is a difficult issue. It is because that the frame beam is one-dimensional element connected with the shear wall by only one node. The connection stiffness between shear wall and frame beam could be too weak (similar to hinge) even though the shear wall element contains in-plane rotation freedom. Therefore, displacements and internal forces can not be transferred correctly, leading to distortion of the results. To solve this problem, three approaches of connection transition treatment between shear wall and frame beam were proposed: penalty element method, direct elimination method and transition element method. Numerical experiments show that the proposed methods have wide adaptability, can handle the connection part automatically and give reasonable calculation results. At present, the proposed algorithms have been implemented completely in structural design software Paco which is developed independently by Beijing Institute of Architectural Design, and satisfactory results have been achieved.
Keywords:finite element; shear wall; frame beam; penalty element
作者簡介：武云鵬，博士，高級工程師，Email：wuyunpeng@tsinghua.org.cn。
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