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Title:

Toward Development of Best Practices for Closure Joints in ABC Projects

Accession Number:

01657436

Record Type:

Component

Abstract:

Accelerated Bridge Construction (ABC) is paradigm change in delivering bridges. ABC, minimizes significantly the onsite construction, enhances the safety of public and workers by reducing onsite construction activities and results in longer lasting bridges. The most common form of Accelerated Bridge Construction (ABC) is the use of pre-fabricated modular bridge systems. These systems require joints between elements. From the structural standpoint owners are concerned about the durability and service life of cast-in-place closure joints (longitudinal and/or transverse) in ABC projects. To address these concerns, an investigation is in progress at Florida International University’s ABC University Transportation Center, to develop a guide specification for closure joints in ABC projects. As part of this initiative, a new detail to join the adjacent prefabricated modular elements using closure joints is proposed. To develop design criteria for the suggested new detail, an experimental program was carried out, which is the subject of this paper. The proposed new detail is not proprietary and uses normal strength concrete and is economical.The new detail consists of hooking the transverse reinforcement in the closure joint area. One of the advantages of new detail over the 180° hook is that top and bottom transverse reinforcement could be different sizes.Test results have shown that the longitudinal connection detailed with hooked bars can be a viable alternative for design and construction of closure joints. This paper provides summary of experimental tests on new closure joint detail and provides tentative design recommendations.

Supplemental Notes:

This paper was sponsored by TRB committee AFF00 Section - Structures.

Report/Paper Numbers:

18-05330

Language:

English

Authors:

Jahromi, Azadeh Jaberi
Valikhani, Alireza
Azizinamini, Atorod

Pagination:

12p

Publication Date:

2018

Conference:

Transportation Research Board 97th Annual Meeting

Location: Washington DC, United States
Date: 2018-1-7 to 2018-1-11
Sponsors: Transportation Research Board

Media Type:

Digital/other

Features:

Figures; Photos; References; Tables

Subject Areas:

Bridges and other structures; Construction; Highways

Source Data:

Transportation Research Board Annual Meeting 2018 Paper #18-05330

Files:

TRIS, TRB, ATRI

Created Date:

Jan 8 2018 11:20AM