详情

Assessment of Micropile-Supported Integral Abutment Bridges

项目名称：	Assessment of Micropile-Supported Integral Abutment Bridges
摘要：	Integral abutment bridges (IABs) are the preferred method of construction by Maine Department of Transportation (DOT) and other transportation agencies throughout the United States due to their durability and reduced upfront and life-cycle costs. Shallow bedrock, commonplace at bridge sites throughout the state of Maine, has precluded the use of conventional driven pile foundations and IABs in some instances. Micropiles are an attractive foundation alternative at shallow bedrock sites where conventional foundation systems (e.g. driven piles) cannot develop sufficient length to achieve fixity and/or adequate geotechnical resistance. These foundation elements can be installed through challenging glacial geology, including boulder material and bedrock. Currently, there is no guidance on the design of micropile-supported IABs, or long-term instrumentation data capturing their performance. The objective of this study is to develop a design methodology and engineering recommendations for the structural and geotechnical design of micropiles for IABs, and to demonstrate that micropiles satisfy strength and stability requirements for IAB applications when shallow bedrock is present.
状态：	Active
资金：	186480
资助组织：	Maine Department of Transportation<==>Transportation Infrastructure Durability Center<==>Office of the Assistant Secretary for Research and Technology<==>ADSC-IAFD
执行机构：	University of Maine, Orono<==>Transportation Infrastructure Durability Center<==>Maine Department of Transportation
开始时间：	20190901
预计完成日期：	20230630
主题领域：	Bridges and other structures；Design；Geotechnology；Highways