The Development of Laminated Rubber Bearings Applicable to the Base Isolation of Light Weight Wooden Houses

适用于轻型木结构房屋基础隔震的层压橡胶支座的研制

基本信息

批准号：
14550583
负责人：
NISHIMURA Isao
金额：
$ 1.98万
依托单位：
Musashi Institute of Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2002
资助国家：
日本
起止时间：
2002 至 2004
项目状态：
已结题

项目摘要

The goal of this research project was to improve the stability of laminated rubber bearings to the extent that they could support such lightweight structures as wooden houses that are base isolated from the ground motion in case of a large earthquake.In the early phase of this research project, emphasis was placed on the analytical study to clarify the shear, bending, and axial stiffness associated with hollow circular rubber bearings that were used for this purpose. The aim of the experimental studies was to validate the analytical prediction and evaluate the precision of the obtained formulas.The coherence between the analytical and experimental studies for the hollow circular rubber bearings was the basis on which the buckling tests in the next phase were conducted and their post-analytical studies were also carried out. As a result of those sequential tests and analyses, the author successfully constituted a geometrically nonlinear model that could well describe the post buckling behavior of test specimens.The author proved that the deferential equation of the buckling model was identical to the nonlinear vibration model for a pendulum with large amplitude. Therefore, the solution for the model is expressed in terms of Jacobi's elliptic integrals.This model revealed that there is a required condition that certifies the post-buckling stability of the shear-bending columns in general. This theoretical finding leads to the invention that has a superb post-buckling stability that will satisfy the goal of this research project.

该研究项目的目的是提高层压橡胶轴承的稳定性，以至于它们可以支持在大型地震时与地面运动隔离的木制房屋这样的轻巧结构。在该研究项目的早期阶段，重点是在分析研究上以澄清剪切，弯曲，弯曲，弯曲，弯曲，轴向粘合轴承的轴向研究。实验研究的目的是验证分析预测并评估所获得公式的精度。空心圆形橡胶轴承的分析和实验研究之间的相干性是进行下一阶段的屈曲测试并进行后分析研究的基础。由于这些顺序测试和分析，作者成功构成了一个几何非线性模型，可以很好地描述测试样品的后屈曲后行为。因此，该模型的解决方案是根据雅各比的椭圆积分来表示的。该模型表明，有一个必需的条件可以证明通常，剪切弯曲柱的后扎后稳定性。这一理论发现导致发明具有出色的弯曲后稳定性，可以满足该研究项目的目标。