详情

Non-contact Splices at Drilled Shaft to Bridge Column Interface

项目名称：	Non-contact Splices at Drilled Shaft to Bridge Column Interface
摘要：	Use of the contact lap splices of the reinforcement is common for the construction of reinforced concrete structures. It is now often required to provide a reinforcing steel splicing arrangement with non-contact lap splices for the connection of non-circular bridge columns interfacing directly with circular drilled shafts. The general requirement of a splice is to transfer the forces from one rebar to another without spalling of surrounding concrete and large cracks. Accordingly, there is concern about whether the non-contact splices at drilled shaft to bridge column connections are safe and cost effective because the guidance in current American Association of State Highway and Transportation Officials (AASHTO) code and research for this type of connection is limited. This research project shall conduct the experimental and analytical investigation on the behavior of non-contact splices at geometrically dissimilar bridge column and drilled shaft interfaces with regards to the following parameters: (a) splice length, (b) splice spacing, (c) amount of confining reinforcement, (d) reinforcing steel ratio, and (e) strength of reinforcing bars. Design provisions of existing regulations, especially AASHTO Load and Resistance Factor Design (LRFD) code, shall be reevaluated through the experimental approach. Finally, a rational design method and appropriate construction practices shall be established for safe and serviceable non-contact splices at bridge column and drilled shaft connections.
状态：	Completed
资金：	616,995
资助组织：	Texas Department of Transportation
项目负责人：	Steele PMP, CTCM, Joanne
执行机构：	University of Houston, Texas
主要研究人员：	Mo, Yi-Lung
开始时间：	20160126
预计完成日期：	20190228
实际结束时间：	0