适合村镇建筑的格构木柱抗震性能数值模拟研究  

Numerical Simulation of Seismic Performance of Latticed Timber Columns Suitable for Rural Buildings

作　　者：王国政 刘永军[1] WANG Guozheng;LIU Yongjun(School of Civil Engineering,Shenyang Jianzhu University,Shenyang,Liaoning 110168,China)

机构地区：[1]沈阳建筑大学土木工程学院,辽宁沈阳110168

出　　处：《水利与建筑工程学报》2024年第3期196-203,共8页Journal of Water Resources and Architectural Engineering

基　　金：“十三五”国家重点研发计划项目(2018YFD1100403)。

摘　　要：在我国西南村镇地区的木结构中多数采用大直径木柱,但其所需要的大直径木材生长周期较长、造价较高。为了解决这一问题,提出一种将一定间距的小直径圆木采用螺钉、螺栓等不同连接件物理拼接到一起形成的格构木柱。并应用有限元分析软件ABAQUS建立模型,在数值模拟与试验结果吻合的基础上,分析圆木肢件间距、圆木肢件直径、轴压比等参数对格构木柱抗震性能的影响。分析结果表明:圆木肢件间距每增加20 mm,位移延性系数增加约4%;圆木肢件直径每增加10 mm,骨架曲线的峰值荷载增加约22%,构件初始刚度增加约27%。适当增加轴压比,能提升构件的耗能能力。该结构具有取材容易、造价低廉等优点,在村镇建筑中具有良好的应用前景。In southwest part of China,forest resources are abundant and there are a large number of timber structure village and town buildings.Large diameter timber columns are used in most of the timber structures in rural areas of southwest China,but the growth period of large diameter wood required is long and the cost is high.This paper presents a kind of lattice timber column,which is formed by using screws,bolts and other connecting parts to form a small diameter round timber with a certain distance.It has the advantages of easy materials and low cost,and has a good application prospect in village and town buildings,but its seismic performance is seldom analyzed.In this work,the finite element analysis software ABAQUS was used to establish a numerical simulation model.Based on the agreement between the numerical simulation and the test results,the effects of log limb spacing,log limb diameter and axial compression ratio on the seismic performance of lattice timber columns were analyzed.Analysis of the data shows that the displacement ductility coefficient increases about 4%when the distance between log limbs increases by 20 mm.When the diameter of log limb increases by 10 mm,the peak load of skeleton curve increases by about 22%and the initial stiffness of member increases by about 27%.An appropriate increase in axial compression ratio will increase the energy dissipation capacity of the component.The research results can provide reference for the practical application of lattice timber columns.

关 键 词：村镇建筑 木柱 格构柱 抗震性能 有限元 

分 类 号：TU366.2[建筑科学—结构工程]