【作者】 孙秀成；

【导师】 姚谦峰； 黄炜；

【作者基本信息】 西安建筑科技大学 ， 结构工程， 2009， 硕士

【摘要】 密肋复合墙—剪力墙结构是一种自重轻、抗震性能好、节能效果佳、经济实用的新型混合结构体系,具有竖向荷载分担明确、抗侧刚度分布合理、具有多道设防等力学特点。然而,作为一种新型混合结构体系还有许多问题需要作进一步的研究。通过理论分析和有限元数值模拟两种方法,对密肋复合墙-剪力墙混合结构在水平荷载作用下的变形性能和受力性能两方面进行了较为深入的研究。本文的主要研究内容:(1)基于课题组前期提出的密肋复合材料弹性板理论,将密肋复合墙肢等效为匀质墙,从连续连杆法的思路出发将连梁连续化,形成了混合结构的解析模型。以能量原理为基础建立了混合结构在水平荷载作用下的势能方程,其中单独考虑了两个墙肢的弯曲应变能和剪切应变能,利用连梁自身的剪力平衡建立了系统的约束方程。通过变分原理建立系统的平衡微分方程组,求解得到结构在水平荷载作用下的侧移计算公式和转角计算公式,其中包括考虑和不考虑剪切变形两组表达式。(2)利用有限元软件ANSYS建立结构数值模型,基于密肋复合材料弹性板理论将密肋复合墙肢等效为匀质墙,模型中混凝土墙肢和密肋墙肢统一采用壳单元模拟。计算在水平荷载作用下结构的侧移和转角,验证解析法计算结构侧移方程的正确性。(3)基于已验证的结构数值模型,以连梁高度和混凝土墙肢的宽度作为变量,分析密肋复合墙—墙剪力墙结构在水平荷载作用下结构的侧移、两个墙肢各自分配到的局部弯矩和墙肢剪力,定性给出密肋复合墙—剪力墙结构中密肋复合墙体和剪力墙的弯矩和剪力分配关系。更多还原

【Abstract】 Multi-ribbed composite wall -shear wall structure (MRCWSWS) is a new composite structure system. There are many advantage in this system ,such as light dead weight、good performance in seismic resistance、short construction periodic time、good energy-saving effect、economy and practicality. So it will have a good prospect in the building market. But as a new structure system, some research should be made in the further.Through the analytical and numerical methods, this paper discussed the deformation performance and the bearing performance under the lateral load. The main research contents are shown as followed:(1)Based on the multi-ribbed composite elastic plate theory proposed by Pro.Huang, multi-ribbed composite wall is equivalent to homogeneous wall, then the link beams are serialized according to the continuous link method. After the two stage above, the analytical model was established. On the basis of energy principle, the energy equation is established, in which the bending strain energy and the shear strain energy were considered respectively. Considering the equilibrium conditions of the shearing forces in the link-beam, the constraint equations were formed. By the variational principle, the equilibrium differential equations were established. We can obtain two sets of the calculation formula for the lateral displacement and the rotation by solving the equations. One takes the shearing deformation into account, the other don’t.(2) Using the finite software ANSYS, the displacement and the rotation of the model under the lateral loads are calculated. Compared with the results using the analytical method, the accuracy of the displacement equation and the rotation equation are proved.(3)By analyzing the displacement under the lateral loads, the local moment and shearing force of the wall panel based on the numerical model, in which the height of the beam and the width of the wall panel are served as variable, the distribution relation of the moment and the shearing force between the multi-ribbed composite wall and the shearing wall is presented qualitatively.更多还原