雙向勁度橡膠隔震墊與鉛心橡膠隔震墊水平勁度之實驗研究

Experiment of Shear Stiffness for Bi-directional Stiffness Laminate Rubber Bearing and Lead Rubber Bearing

林文山(Wen-Shan Lin)

《中華科技大學學報》 70期 (2017/04) Pp. 61-72

摘要

一般積層橡膠隔震墊 (RB)和鉛心積層橡膠隔震墊 (LRB)爲水平勁度均向性，即任何方向均具同值水平勁度；而雙向勁度積層橡膠隔震墊(BRB)和雙向勁度鉛心積層橡膠隔震墊(BLRB)，是由RB 與LRB 加設U 型槽組合而成，使隔震墊不同方向的有效高度改變，進而改變不同方向的水平勁度，隨著U 型槽旋轉角的變化而使有效高度不同，進而改變其水平勁度；本研究以實驗驗證作著提出BRB 和BLRB 隨著U 型槽旋轉角的變化和水平勁度的關係；且探討不同垂直載重和剪變形以及鉛心被束制程度對水平勁度的影響，以明瞭BRB 和BLRB 之實際結構行爲。

關鍵字

隔震墊 ； 雙向勁度橡膠隔震墊 ； 雙向勁度鉛心橡膠隔震墊

並列摘要

Laminate rubber bearing (RB) and lead rubber bearing (LRB) has homogenous lateral stiffness with respect to any horizontal direction. But the bi-directional laminate rubber bearing (BRB) and the bi-directional lead rubber bearing (BLRB) are furnished with a U-channel, so that it's effective height and it's to lateral stiffness in each direction are different. In this paper, a test program to observe the relation between the angle of U-channel and the lateral stiffness of BRB and BLRB was carried out. Different vertical loading and shear deformation were performed to find their influence on BRB and BLRB lateral stiffness. The degree of the constraint of lead core to the behavior of LRB is also examined.

並列關鍵字

Isolation ； Bi-directional Laminate Rubber Bearing ； Bi-directional Lead Rubber Bearing