详情

Strength, Durability, and Application of Grouted Couplers for Integral Abutments in ABC Projects

项目名称：	Strength, Durability, and Application of Grouted Couplers for Integral Abutments in ABC Projects
摘要：	Accelerated bridge construction (ABC) projects are becoming more commonplace and often critical to bridge designers and contractors meeting the needs and demands of the traveling public. Through the development of various ABC designs and techniques, several technologies have been important for accelerating the process or to provide for greater bridge sustainability. At the same time, significant steps have been made in improving bridge durability by moving towards bridges with integral abutments. However, to date, the two have not been paired together for ABC and, in general, integral abutments have seen limited (if any) use in ABC despite widespread use in typical bridge construction for decades. Development of an integral abutment design utilizing grouted couplers has the potential to make bridges constructed using ABC techniques more efficient, economical, and increase service life by eliminating expansion joints. Furthermore, these designs will allow all the benefits conventional bridges with integral abutments have realized to be transferred and applied to ABC projects. In addition to the integral abutment design using grouted couplers, there is a need for more information regarding the strength and durability of the grouted rebar coupler in these specific applications. Testing and validating these characteristics, in a capacity directly related to ABC projects and integral abutments, would ensure ABC bridges constructed using these technologies meet or exceed the strength and serviceability requirements of their cast-in-place counterparts. The focus of this project is to expand on work currently ongoing to further understand the strength and durability characteristics of grouted couplers for use in ABC projects, specifically, integral abutments for ABC projects. In addition, to investigate other means for developing an integral abutment connection suitable for ABC projects. To accomplish this, developed details for integral abutments utilizing grouted couplers and other connection details will be constructed and evaluated through laboratory testing.
状态：	Completed
资助组织：	Accelerated Bridge Construction University Transportation Center (ABC-UTC)<==>Office of the Assistant Secretary for Research and Technology
执行机构：	Iowa State University
开始时间：	20140501
实际结束时间：	20161001
主题领域：	Bridges and other structures；Construction；Design；Highways