高阻尼橡膠支座力學(xué)性能及其隔震效果分析研究.pdf

1、華中科技大學(xué)碩士學(xué)位論文高阻尼橡膠支座力學(xué)性能及其隔震效果分析研究姓名：朱昆申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：結(jié)構(gòu)工程指導(dǎo)教師：熊世樹(shù)20090527IIAbstract At present, lead rubber bearings is widely used in the isolation design of constructions and bridges. But it will bring great damage to the

2、 environment because of the gradual aging and cracking of rubber, leakage of lead, while the mechanical properties of lead rubber bearings will be reduced. Therefore, it has a very important social and economic value to

3、develop the high damping rubbe bearings whose mechanical and damping properties is stable. The mechanical properties of high damping rubber bearings is related to a number of factors, such as strain amplitude, the vertic

4、al compressive stress, loading frequency, loading sequence and the shear modulus of high damping rubber which are researched in this paper. And then, the regression formula about equivalent shear stiffness and equivalent

5、 damping ratio changing with the strain amplitude is established. At last, bilinear model which is made by the hysteresis curve of high damping rubber bearings is also contained in this paper. This paper is based on prac

6、tical engineering. In order to know how the high damping rubber bearing works in the bridges, time-history analysis of isolation which is provided by the finite element analysis software ANSYS is used. In the analysis, t

7、he mechanical properties of high damping rubber bearings is gained by doing experiment. Then, another time-history analysis of isolation in which lead rubber bearings with the same size of high damping rubber bearings is

8、 used is held. Compared to the lead rubber bearings, the use of high damping rubber bearings achives better results. Keywords: isolation high damping rubber bearings mechanical properties equivalent viscous model