摘要
为了研究框支密肋复合墙梁的受力性能,应用弹性地基梁理论,将上部密肋复合墙体简化为考虑剪切作用影响的Pasternak双参数弹性地基,托梁视为倒置于弹性地基上的有限长梁,借鉴Vlasov模型推导了考虑材料性能差异的等效地基参数,进而建立了托梁的挠曲变形控制微分方程;采用传递矩阵法求解了墙梁界面的竖向应力分布及托梁内力,并与有限元分析结果进行了对比,二者吻合较好.结果表明,基于双参数弹性地基上的梁模型能够较好地反映框支密肋复合墙梁的受力性能.
In order to study the mechanical performances of frame-supporting multi-ribbed composite wall beam, the elastic foundation beam theory was applied to simplify the upside multi-ribbed composite wall into Pasternak two-parameter elastic foundation with considering the shear effect. The supporting beam was considered as the finite long beam inverted on the elastic foundation. With the Vlasov model, the equivalent foundation parameters with considering the differences in material property were derived, and then the differential equation for the flexural deformation control of supporting beam was established. The distribution of vertical stress and the internal force of supporting beam for the interface of wall beam we.re solved with the transfer matrix method. Moreover, the attained results were compared with the finite element analysis results. The results show that the beam model based on two-parameter elastic foundation can better reflect the mechanical performances of frame-supporting multi-ribbed composite wall beam.
出处
《沈阳工业大学学报》
EI
CAS
北大核心
2013年第4期475-480,共6页
Journal of Shenyang University of Technology
基金
国家自然科学基金资助项目(51078028
50878021)
中央高校基本科研业务费专项基金资助项目(2009JBM071)
北京交通大学基本科研业务费资助项目(2011JBM082)
