OUT-OF-PLANE DYNAMIC RESPONSE OF UNREINFORCEDMASONRY BEARING WALLS ATTACHED TO FLEXIBLEDIAPHRAGMS

摘要

The paper summarizes research on the out-of-plane behavior of unreinforced masonry bearing walls inbuildings subjected to earthquake motions. Results from a set of shake table tests revealed that, in general,the walls performed very well despite the intensity of the base motion and the slenderness of the wall.Experimental results are compared with those simulated using SDOF and MDOF computational models.The validated models are useful for establishing that permissible limits on wall slenderness as prescribedby current seismic guidelines (FEMA356) can be increased. A two-degree-of-freedom model is introducedas a simple tool for dynamic stability analysis of unreinforced masonry walls.