详情

Composite Tub Girder Live Load Testing and Shear Force Distribution

项目名称：	Composite Tub Girder Live Load Testing and Shear Force Distribution
摘要：	The newly developed composite tub (CT) girder has been deployed on US Rt. 1A in Hampden, Maine, and a second CT girder bridge is scheduled for completion on Rt. 69 in Hampden. While laboratory testing has proven the strength and stiffness of these composite girders, field testing is important to assess in-service response. Further, current design methods are relatively complex because of the lack of AASHTO code provisions for this type of girder. Both of these issues can limit the acceptance and use of the CT girder system. With support of the MaineDOT (traffic control, UBIT), UMaine will instrument and live load test both CT girder bridges in Hampden, Maine. In addition to flexural strains, we will measure web shear strains in all girders at one support to determine the distribution of live load shears between girders. In addition to giving a complete picture of in-service girder response, the data gathered from these tests will provide a complete picture of in-service girder response. The proposed testing is critical to leveraging a larger, separately funded TIDC project focused on the development of design guidelines for live load distribution in CT girder bridges
状态：	Programmed
资金：	45000
资助组织：	Maine Department of Transportation
执行机构：	Transportation Infrastructure Durability Center
主要研究人员：	Davids, Bill
开始时间：	20220228
预计完成日期：	20230501
主题领域：	Bridges and other structures