【作者】 刘闯； 张龙； 周婷；

【Author】 LIU Chuang;ZHANG Long;ZHOU Ting;School of Tianjin International Engineering Institute,Tianjin University;School of Architecture,Tianjin University;

【机构】 天津大学国际工程师学院； 天津大学建筑学院；

【摘要】 古建筑木结构柱础属于我国古建筑的典型构造特征,柱础的连接形式、柱架的生起和侧脚等特殊的营造技术,以及在水平地震作用下古建筑木构架良好的自复位性能等影响着古建筑的结构安全。在梳理柱础营造特点的基础上,研究了国内外的理论分析、模型试验及数值模拟等方面的柱础力学性能,柱础连接的受力机理,水平地震作用下的抗震性能以及数值模拟等方面的现状研究。结果表明:通过不同简化方法,建立自由度不同的柱础受力简化模型;充分开展对柱础的力学性能研究,对柱础在静动力作用下的力-变形特征、破坏形式及地震作用下的抗震耗能机理进行了较为深入探讨;在对柱础的数值模拟方面,对边界和摩擦接触条件的设置也逐渐由最开始简单的铰接转化成精细化面面接触的建模。但现有研究也存在研究对象具有局限性,未能够进行套顶榫与管脚榫柱础的深入研究。在对柱础的摩擦接触的模拟也未能考虑由静摩擦变为动摩擦的变化。对古建筑整体研究时,很少考虑侧脚和生起对结构的影响。更多还原

【Abstract】 The wooden column foot of ancient buildings belongs to the typical structural features of ancient buildings in China.The special construction technology such as the connection form of column foot,the rise of column frame and side foot,and the good self reset performance of ancient building wooden frame under the action of horizontal earthquake affect the structural safety of ancient buildings.On the basis of sorting out the characteristics of column foot construction,this paper studies the mechanical properties of column foot in theoretical analysis,model test and numerical simulation at home and abroad,the stress mechanism of column foot connection,seismic performance under horizontal earthquake and numerical simulation.The results showed that:through different simplified methods,the simplified model of column foot with different degrees of freedom is established;the mechanical properties of the column foot are fully studied;the force deformation characteristics,failure forms and seismic energy dissipation mechanism of the column foot under static and dynamic action are deeply discussed;in the numerical simulation of the column foot,the boundary and friction contact conditions are set It is gradually transformed from simple articulation to refined surface contact modeling.However,the existing research also has limitations in the research object,and it has not been able to conduct in-depth research on the top tenon and pin tenon column foot.The simulation of the frictional contact of the column foot also failed to consider the change from static friction to dynamic friction.In the overall study of ancient buildings,little consideration is given to the influence of side feet and rise on the structure.更多还原