竖向荷载作用下框支密肋壁板结构墙梁内力计算分析
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摘要
通过对不同比例模型框支密肋壁板结构墙梁在单调竖向荷载作用下的试验,对墙梁在竖向荷载作用下的受力特点给予探讨;结合有限元分析,对影响墙梁内力分布的主要因素进行研究;以弹性地基梁理论为基础,采用三角级数解析,给出框支密肋壁板结构墙梁内力计算公式,并回归出内力修正系数。理论分析和试验结果表明,托梁与密肋复合墙体具有相当强的组合作用;采用本文提出的内力计算公式进行计算更接近试验结果。
Based on the experimental study on different scaled models of the frame-supported multi-ribbed slab wall beam under monotonously vertical load,it is discussed the mechanical behavior of the wall beam under vertical load.Moreover,the main factors affecting the internal force distribution are studied by means of finite element analysis.According to the theory of elastic foundation beam and quoting the trigonometric series analysis,the internal force calculation formula of the frame-supported multi-ribbed wall beam is put forward,and the internal force correction coefficient in the formula is obtained by regression analysis at the same time.Theoretical analysis and experimental results show that there has strong combination action between the trimmer beam and multi-ribbed composite wall,and the results calculated by the practical internal force calculation formula can be closer to the experimental values.
Based on the experimental study on different scaled models of the frame-supported multi-ribbed slab wall beam under monotonously vertical load,it is discussed the mechanical behavior of the wall beam under vertical load.Moreover,the main factors affecting the internal force distribution are studied by means of finite element analysis.According to the theory of elastic foundation beam and quoting the trigonometric series analysis,the internal force calculation formula of the frame-supported multi-ribbed wall beam is put forward,and the internal force correction coefficient in the formula is obtained by regression analysis at the same time.Theoretical analysis and experimental results show that there has strong combination action between the trimmer beam and multi-ribbed composite wall,and the results calculated by the practical internal force calculation formula can be closer to the experimental values.
引文
1姚谦峰,马静,黄炜.密肋复合墙体双参数地震损伤模型研究.西安交通大学学报(自然科学版),2007,41(7):832-836
2马静,黄炜,姚谦峰.密肋壁板结构中复合墙体的竖向承载力及稳定性研究.西安建筑科技大学学报(自然科学版),2007,39(2):187-192
3姚谦峰,陈平,张荫,等.密肋壁板轻框结构节能住宅体系研究.工业建筑,2003,33(1):1-5
4吕西林,金国芳,吴晓涵.钢筋混凝土结构非线性有限元理论与应用.上海:同济大学出版社,1997
5 Al-Mahaidi R S H.Nonlinear Finite Element Analysis of ReinforcedConcrete Subjected to Shear Loading.Heron,1981,26(1)
6黄炜,姚谦峰,张旭峰,等.新型复合墙体弹性抗侧刚度计算分析.工程抗震与加固改造,2005(2):1-7
7 GB 50003-2002砌体结构设计规范
8周继凯,杜钦庆.考虑水平力作用的改进型文克勒地基模型.河海大学学报,2004,32(6):669-673
9贾英杰.中高层密肋壁板结构计算理论及设计方法研究:[博士学位论文].西安:西安建筑科技大学,2004
2马静,黄炜,姚谦峰.密肋壁板结构中复合墙体的竖向承载力及稳定性研究.西安建筑科技大学学报(自然科学版),2007,39(2):187-192
3姚谦峰,陈平,张荫,等.密肋壁板轻框结构节能住宅体系研究.工业建筑,2003,33(1):1-5
4吕西林,金国芳,吴晓涵.钢筋混凝土结构非线性有限元理论与应用.上海:同济大学出版社,1997
5 Al-Mahaidi R S H.Nonlinear Finite Element Analysis of ReinforcedConcrete Subjected to Shear Loading.Heron,1981,26(1)
6黄炜,姚谦峰,张旭峰,等.新型复合墙体弹性抗侧刚度计算分析.工程抗震与加固改造,2005(2):1-7
7 GB 50003-2002砌体结构设计规范
8周继凯,杜钦庆.考虑水平力作用的改进型文克勒地基模型.河海大学学报,2004,32(6):669-673
9贾英杰.中高层密肋壁板结构计算理论及设计方法研究:[博士学位论文].西安:西安建筑科技大学,2004
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