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全尺寸木结构的实验方法和理论分析来阐明木结构的结构力学。(1)木结构抗震性能评价为了评价木质建筑的抗震性能，进行了安装不同承重构件的木质单元火焰的振动台试验和静载试验。研究了复合材料的动力特性和恢复力特性。根据这些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，并对不确定结构体系进行了结构分析和地震反应分析。(2)传统木结构结构机理的阐明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以及柱摇引起的更多特性。为了阐明这些机理，采用结构单元和传统木框架全尺寸模型进行了振动台试验和静载荷试验。研究了柱、梁尺寸对恢复力的影响。这些结果可用于传统木结构建筑的抗震设计和改造方法。(3)木结构建筑抗震和增强设计方法的发展。通过振动台试验和安装各种承重构件的单元框架静载试验，研究了木质火焰的动、静抗震性能评价方法。这些试验数据，如承载-变形关系等，为抗震设计提供了依据。提出了一种简单的评价木框架抗震性能的“响应-极限能力分析”方法，该方法可以在较宽的变形范围内跟踪木火焰的承载能力-变形关系，并易于利用地震反应谱估计最大位移响应。该方法易于应用于旧木结构房屋的减振加固设计和新房屋的抗震设计。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