The results showed that (1) the ultimate shear deformation of the rubber bearings with two fixed end plates reached 300% to 400% of the rubber layer thickness. The damage was mainly focused on the rubber layer fracture. The energy dissipation capacity of the bearings was weak, and the hysteresis curve presented a narrow zonal shape. (2) The rubber bearings with unilateral friction sliding had a...

Lead-rubber seismic isolation bearings (LRB) have been installed in a number of essential and critical structures, like hospitals, universities bridges, located earthquake-prone areas. The purpose using LRB is providing the structure with period lengthening capacity dissipating considerable amount earthquake energy to mitigate effects strong ground motions. Therefore, studying damage mechanics ...

Recent earthquakes have enforced the engineering community to design seismically more efficient buildings through energy dissipation systems. For this purpose, paper investigates seismic behavior of a high-rise building with series base isolation Firstly, 20-storey steel frame is selected as fixed-base building, and then equipped lead rubber bearings (LRBs). In modelling LRB, period alternative...

In view of the weak isolation and shock absorption effect ordinary bearings at present, a new track damping negative-stiffness device was designed based on principle negative stiffness. The stiffness applied to base isolation, system proposed in which track-type NSD common layer were connected parallel. had characteristics clear force transmission, simple structure, self-resetting ability. theo...

We have investigated whether living muscle and nonmuscle cells can discriminate between microinjected muscle and nonmuscle actins. Muscle actin purified from rabbit back and leg muscles and labeled with fluorescein isothiocyanate, and nonmuscle actin purified from lamb brain and labeled with lissamine rhodamine B sulfonyl chloride, were co-injected into chick embryonic cardiac myocytes and fibr...