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Development of Wooden High Quality Frame Structures Easy to Built-Up, Re-Structure and Re-Use

开发易于建造、重组和重复使用的高质量木质框架结构

基本信息

批准号：
13556025
负责人：
KOMATSU Kohei
金额：
$ 7.68万
依托单位：
KYOTO UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2001
资助国家：
日本
起止时间：
2001 至 2002
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-13556025/
关键词：
Lag screrw Bolt Wedge Traditional Timber Structure Mad Shear Wall Nuki (Narrow Beam)Post & Beam Structures スギ製材葉枯ら真壁仕様半剛節袖壁小壁腰壁

项目摘要

In this research project, we intended to propose new types of timber post & beam structure that can control its stiffness, strength and ductility by making use of characteristics involved in Japanese traditional timber structures. This policy does not mean to avoid any modern timber jointing methods but inversely we intend positively to use lag screwed joints or/and bolted joints which have advantages of easy to fasten and easy to taken off. A series of experiments was performed on lag screwed timber-to-timber joints. Strength reduction factor for multiple lag screwed joints and permissible design load of timber-to-timber lag screwed joints were proposed. Timber-to-timber bolted joints were also taken as its design method for stiffness and strength were not established clearly yet. We proposed a new design method for estimating stiffness and strength of bolted timber-to-timber joints using the theory of beam on elastic foundation. Also, design equations for timber-to-timber moment resi … More sting joints are being proposed at present. Further, we extended our research into investigation on the role of hard wood wedges for fixation of Nuki (Narrow-beam) joints. Through a series of experimental works, our proposal for optimized wedge penetration depth was verified to be reasonable and further basic load transferring mechanism of the simplest Nuki-joint was simulated using newly developed mechanical model. Finally, we developed a new type of timber post & beam structures by utilizing bolts and hard wood timber wedges. In the first stage, only frame structures were evaluated as the semi-rigid portal frame. In the next stage, small pre-fabricated mad shear walls were added for making actual timber structure and the lateral performance of shear walls was evaluated by full-scale lateral loading tests. In consequently, we could establish in some extent a few basic forms of timber post & beam structures by making use of ideas involved in our traditional timber structures without loosing convenience in modem structural forms. Less

在本研究计画中，我们打算利用日本传统木结构所具有的特性，提出一种能控制其刚度、强度及延性的新型木梁柱结构。这一政策并不意味着要避免任何现代木材连接方法，但相反，我们打算积极使用方头螺纹接头或/和螺栓接头，这些接头具有易于紧固和易于拆卸的优点。对木-木方头螺栓连接节点进行了一系列试验研究。提出了螺栓连接的强度折减系数和木材-木材螺栓连接的许用设计荷载。木-木螺栓连接也是由于其刚度和强度的设计方法尚未明确而采用的。提出了一种基于弹性地基梁理论的螺栓连接节点刚度和强度设计方法。此外，木-木弯矩的设计方程， ...更多信息目前正在提出支管接头。此外，我们扩大了我们的研究调查的作用，硬木楔固定的Nuki（窄梁）关节。通过一系列的试验工作，验证了我们提出的楔块最佳贯入深度的合理性，并进一步利用新开发的力学模型模拟了最简单的Nuki节点的基本荷载传递机理。最后，利用螺栓和硬木木楔构造了一种新型的木柱梁结构。在第一阶段，只有框架结构被评估为半刚性门式刚架。在此基础上，增加小型预制木剪力墙，制作实际木结构，并通过足尺水平加载试验对剪力墙的抗侧性能进行评估。因此，在不失去现代结构形式便利性的前提下，可以利用我国传统木结构的思想，在一定程度上建立木梁柱结构的几种基本形式。少