详情

SEISMIC: Effect of Vertical Ground Motion on Column Shear Capacity

项目名称：	SEISMIC: Effect of Vertical Ground Motion on Column Shear Capacity
摘要：	There has been a great deal of research during the last few years on vertical ground motion and its impact on bridges. Most of this research suggests that vertical ground motion during earthquakes is not a life-safety issue for most bridges. However, one area where results have caused concern is in the shear capacity of bridge columns. Near a fault, vertical ground motion can put a column into tension for short time durations, reducing the column's shear capacity to just the shear strength of the transverse reinforcement. One question is whether columns designed to resist shear using the combined shear strength of the concrete and the transverse reinforcement may be vulnerable during high vertical ground motion. This is a complex issue since strong vertical motion occurs near the beginning of the earthquake record and at high frequency. How this couples with the longer period lateral ground motion to cause column shear damage needs to be investigated. Because columns should never fail in shear, further research is required to determine whether vertical ground motion increases the probability of a shear failure.
状态：	Active
资金：	369009.00
资助组织：	California Department of Transportation
项目负责人：	Sheng, Li-Hong
执行机构：	Regents of the University of California, Davis
开始时间：	20081201
实际结束时间：	20120131
主题领域：	Bridges and other structures；Geotechnology；Highways