Study on structural mechanism and static and dynamic performance of wooden structures

本研究的目的是通过对木结构单元框架和足尺木结构的实验研究和理论分析，阐明木结构的结构力学。（1）木结构抗震性能评价为评价木结构建筑的抗震性能，对安装不同承重构件的木结构单元框架进行了振动台试验和静载试验。研究了其动力特性和恢复力特性。根据恢复力特性的试验结果，提出了确定滞回特性分析模型的非线性识别方法，并进行了不确定性结构体系的结构分析和地震反应分析。（2）阐明了传统木结构的结构机理传统木结构的结构机理主要表现为柱-系梁节点的弯矩和恢复力特性，而柱-系梁节点的弯矩和恢复力特性主要表现为柱-系梁节点的弯矩和恢复力特性。 ...更多信息 由于柱摇摆而产生的震动。为了阐明这些机制，振动台试验和静力加载试验，使用结构元件和足尺模型的传统木框架进行。研究了柱和梁的尺寸效应对恢复力的影响。这些结果可用于传统木结构建筑的抗震设计和加固方法。（3）木结构建筑抗震加固设计方法的发展通过对设置不同承重构件的单元框架的振动台试验和静载试验，建立了木结构框架的动静态抗震性能评价方法。这些试验数据，如承载力-变形关系，准备作为抗震设计的数据。本文提出了一种评价木框架抗震性能的简单方法-反应-极限承载力分析法。该方法可在较宽的变形范围内跟踪木框架的承载力-变形关系，并可方便地利用地震反应谱估算木框架的最大位移反应。该方法可方便地应用于旧木结构房屋的减震加固设计和新木结构房屋的抗震设计。少

The objective of this study is to clarify structural mechanics of wooden structures by experimental approaches and theoretical analyses of wooden unit frames and full-scale wooden structures.(1)Evaluation of seismic performance of wooden framesTo evaluate the seismic performance of wooden buildings, shaking table tests and static loading testes of wooden unit flames installing various bearing elements were carried out. The dynamic properties and restoring force characteristics are investigated. From these experimental results of restoring force characteristics, nonlinear identification methods to determine the analytical models of hysteretic characteristics are developed The structural analysis and seismic response analysis of uncertain structural systems are developed.(2)Clarification of structural mechanism of traditional wooden structuresThe structural mechanisms of traditional wooden frame are characterized by bending moments of column-tie beam joints and restoring force characteri … More stics due to column rocking. To clarify these mechanisms, the shaking table tests and static loading tests using structural elements and full-scale models of traditional wooden frames were carried out. The size effects of column and beam on the restoring force are investigated. These results are applied to the seismic design and retrofit methods for traditional wooden buildings.(3)Development of seismic and enhancement design methods for wooden buildingsThe evaluation methods of dynamic and static seismic performance for wooden flames through the shaking table tests and static loading tests of unit frames installed various bearing elements are developed. These experimental data such as bearing capacity-deformation relationships are prepared as data for seismic design. A simple method "response-limit capacity analysis" to evaluate the seismic performance of wooden frames is proposed The proposed method enables us to trace the bearing rapacity-deformation relationships of wooden flame in wide range of deformation and easily to estimate the maximum displacement response by using seismic response spectra. The proposed method is applied easily to the enhancement design of old wooden houses by vibration control devices as well as the seismic design of new houses. Less