详情

Repairable Precast Bridge Bents for Extreme Events

项目名称：	Repairable Precast Bridge Bents for Extreme Events
摘要：	For conventional RC bridges, the columns are usually the main source of ductility during an earthquake. Minor damages can be repaired but excessive damages such as core crushing, bar buckling, and/or bar fracture are hard to repair. Even though current practice is successful in attaining the no-collapse objective, a new design paradigm is needed to minimize bridge damage incorporating low- to no-damage techniques. The benefit can be enhanced if those low-damage technologies are combined with precast techniques to accelerate bridge construction. The main goal of the proposed pilot and feasibility work is to develop new details for precast bridge columns, which significantly accelerate bent construction and minimize the post-earthquake column damage to a few hairline cracks. The only component that is allowed to damage is detachable exposed reinforcement in the column plastic hinges. The exposed bars can be quickly replaced with new ones after extreme events, if needed.
状态：	Active
资金：	134444
资助组织：	Transportation Infrastructure Durability & Life Extension<==>South Dakota State University, Brookings<==>Office of the Assistant Secretary for Research and Technology
项目负责人：	Kline, Robin
执行机构：	South Dakota State University, Brookings
开始时间：	20210522
预计完成日期：	20220522
实际结束时间：	20220522
主题领域：	Bridges and other structures；Design；Maintenance and Preservation