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Seismic Strengthening Method for Wooden Houses by Connecting System Composed of Metal Connector and adhesive

金属连接件和粘合剂组成的连接系统的木结构房屋抗震加固方法

基本信息

批准号：
08650676
负责人：
INOUE Masafumi
金额：
$ 1.41万
依托单位：
Oita University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1996
资助国家：
日本
起止时间：
1996 至 1997
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08650676/
关键词：
Conventional Construction System Seismic Strengthening Connection New Connecting System Adhesive Metal Connector Z-mark Connector Wood Panel ほぞ接合

项目摘要

The horizontal loading tests were carried out to research the effect of the various kind of connecting systems on the structural behavior of wooden houses for earthquake.From test results, we reached the following conclusions.The seismic performance such as ultimate strength, rigidity and wall strength factor for wooden frames connected by the new type connecting system composed of metal connector and adhesive is better than that of the conventional connecting system composed of Z-mark metal connectors.The brace can carry high tension force using new connecting system mentioned above. This tension capacity is more than the compressive capacity of brace using new type connecting system. This means that wall strength factor for wooden frame with brace can not determined by only sectional dimension of brace.The kind of connecting system should be considered when the wall strength factor for wooden frame with brace are determined.The new connecting system is effective for the column-sill or column-beam connection in the existing wooden houses, because this connecting system prevents the column pulling out of beam or sill under earthquake loading.In this project, wooden frames with one brace and wooden frames with two braces ware tested. From this test result, the strength sum of two frames with one brace is not the strength of frame with two braces. This fact means that the arrangement method should be considered in determination process of wall strength factor of wooden frame with brace.In this project, the seismic performance of wooden frame with SUGI, which is Japanese cedar, panel is reseached too, In this case, test parameters are the wood fiber direction, nail distance and connecting system of wooden frame.The test results indicate the usage of preferable connecting system at column-sill and column-beam connections and the reasonable nail distance in attaching of wooden panel to frame.

通过水平加载试验，研究了不同连接体系对木结构房屋抗震性能的影响，得出了木结构房屋的抗震性能，如极限承载力，由金属连接件和胶粘剂组成的新型连接体系连接的木框架的刚度和墙体强度系数均优于传统连接体系由Z标记金属连接器组成的连接系统。使用上述新型连接系统，支撑可以承受高张力。采用新型连接体系的支撑，其抗拉承载力大于抗压承载力。这说明，木框架带支撑的墙体强度系数不能仅由支撑的截面尺寸确定，在确定木框架带支撑的墙体强度系数时，应考虑连接体系的类型，新的连接体系对既有木结构房屋中的柱-梁或柱-梁连接是有效的，由于这种连接体系可以防止柱在地震荷载作用下从梁或槛中脱出，因此本文对单支撑木框架和双支撑木框架进行了试验研究。从试验结果来看，两个框架加一个支撑的强度之和并不是两个支撑框架的强度。本文还对带支撑木框架的抗震性能进行了研究，试验参数为木纤维方向、木试验结果表明，采用较好的柱-梁、柱-梁连接体系，梁的连接方式以及木板与框架连接时合理的钉距。