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(1 南京航空航天大學(xué)土木工程系  210016;2 東南大學(xué)土木工程學(xué)院  南京 210096)
【提要】  板柱結(jié)構(gòu)的周邊布置邊梁可以提高結(jié)構(gòu)的抗震性能。采用等代框架法分析帶邊梁的板柱結(jié)構(gòu)發(fā)現(xiàn)，邊梁的抗扭剛度對內(nèi)框架的側(cè)向剛度影響較小。在邊框架中，等代梁的抗彎剛度比邊梁的抗彎剛度大，影響因素有板與邊梁的抗彎剛度比、受扭構(gòu)件與板抗彎剛度的比等，給出了邊梁抗彎剛度增大系數(shù)的計(jì)算方法。
【關(guān)鍵詞】  板柱結(jié)構(gòu)  邊梁  抗彎剛度  側(cè)向剛度
Study on Influence of Spandrel Beam on Lateral Stiffness of Flat Plate Structures/Wu Qiang1,Cheng Wenrang2(1 Department of Civil Engineering,Nanjing University of Aeronautics & Astronautics,Nanjing 210016,China;2 College of Civil Engineering,Southeast University,Nanjing 210096，China)
Abstract:The seismic performance of flat plate structure can be improved by the spandrel beam.The equivalent frame method is used to analyze the flat plate structure with spandrel beam.The results show that the lateral stiffness of the inner frame is affected little by the torsional stiffness of the spandrel beam.For the side frame,the flexural stiffness of equivalent beam is larger than that of the spandrel beam,and the affected factors are the ratio of the flexural stiffness   of the plate  to that of the spandrel beam and  the  torsional members to that of the plate.The  calculation method of amplification coefficient is given.
Keywords:flat plate structure；spandrel beam;flexural stiffness;lateral stiffness