Experimental Evaluation of Factors Affecting Tensile Capacity of Connection between Lead Damper and Concrete Foundation
It has been strongly requested in highly seismic areas to consider not only structural performances but also maintenances of aseismic members in design procedure. Base-isolated structures have both functions to be applied to important buildings. However, brittle fractures at the connections between lead dampers and concrete foundations were observed in 2005 Fukuoka Earthquake. Seismic resistance of damper is transmitted to concrete foundations through the anchor bolts. Therefore, these connections require sufficient stiffness and strength to prevent their deformation and fracture even if dampers are damaged by seismic load. Tensile tests on anchor bolts were conducted to evaluate some factors affecting tensile capacity and failure modes. The main parameters were types of anchor bolts commonly used in anchorage of the lead dampers and layout of reinforcement around the anchor bolt. Based on results of tensile tests, Factors affecting tensile behavior of anchor bolt were discussed.
Base isolated structure Connection Lead damper Anchor bolt Tensile capacity Concrete Cone failure
H. Asada S. Kishiki A. Wada
Graduate Student, Tokyo Institute of Technology, Yokohama, Japan Assistant Professor, Tokyo Institute of Technology, Yokohama, Japan Professor, Tokyo Institute of Technology, Yokohama, Japan
国际会议
14th World Conference on Earthquake Engineering(第十四届国际地震工程会议)
北京
英文
2008-10-12（万方平台首次上网日期，不代表论文的发表时间）