Pall型摩擦阻尼器的试验研究与数值分析  

Experimental research and numerical analysis of Pall typed frictional dampers

作　　者：吴斌[1] 张纪刚[1] 欧进萍[1] 

机构地区：[1]哈尔滨工业大学土木工程学院,黑龙江哈尔滨150090

出　　处：《建筑结构学报》2003年第2期7-13,共7页Journal of Building Structures

基　　金：国家自然科学基金资助项目(59908002);哈尔滨工业大学科学研究基金资助项目(HIT200080)。

摘　　要：本文对一种改进的Pall摩擦阻尼器———T形芯板摩擦阻尼器的性能进行了试验研究和数值分析。试验内容包括摩擦片摩擦系数试验、阻尼器滞回性能试验。试验结果表明阻尼器的起滑摩擦力可由简单的摩擦片试验结果推算得到。通过滞回性能试验我们还发现,阻尼器起滑后恢复力基本保持不变,但是支撑拉力却呈显著增加趋势。考虑几何非线性的数值分析结果与滞回性能试验结果基本相符,这就意味着按传统简化计算方法设计的Pall型阻尼结构可能存在较大安全隐患。The behavior of an improved Pall typed frictional damper(PFD), the T shaped core plate frictional damper (TFD), is studied through tests and numerical analysis. The whole tests include frictional pad coefficient test and the damper hysteretic test. Test results show that the slip force of TFDs can be computed based on the test results of frictional pads. It is found from hysteretic test that the slip force of TFDs keeps stable, but the tension force of the brace increases remarkably after the slipping of TFDs. The results of numerical calculation considering geometry nolinearity agree with the test results. The results herein indicate that the simplified method without considering geometry nonlinearity of Pall damper may lead to unsafe structural design.

关 键 词：PALL型摩擦阻尼器 试验 数值分析 几何非线性 

分 类 号：TU317[建筑科学—结构工程]