下部结构
结构工程
桥台
支撑
上部结构
参数统计
大梁
有限元法
工程类
土木工程
法律工程学
数学
撑杆
统计
作者
James M. LaFave,Gabriela Brambila,Utkarsh Kode,Gaoyu Liu,Larry A. Fahnestock
出处
期刊:Journal of Bridge Engineering
[American Society of Civil Engineers]
日期:2021-04-01
卷期号:26 (4)
被引量:12
标识
DOI:10.1061/(asce)be.1943-5592.0001677
摘要
Integral abutment bridges (IABs) have become popular with departments of transportation throughout the United States due to their lower maintenance and construction costs and longer service life. Nevertheless, IAB design and construction vary widely across the country, and not all aspects of IAB behavior are fully understood. Research has previously been conducted on IABs, but primarily with a focus on substructure behavior. However, recent studies have shown that IAB superstructures may develop significant stresses, which warrant consideration in their design. The work reported herein addresses the need to better understand not only IAB substructure behavior but also superstructure behavior, with a goal of improving design and construction provisions for IABs. Two bridges were instrumented, with primary focus on superstructure behavior and more limited instrumentation of the substructure. Corresponding finite-element models were developed based on modeling techniques and findings from prior parametric studies. It was found that the IAB decks and girders (in the superstructure) and abutments and piles (in the substructure) generally show seasonal and even daily trends with respect to changes in temperature, with the exception of bottom-flange girder stresses that have wider variability not directly related to temperature change. Prior modeling assumptions regarding the rigidity of various IAB connections were also validated through the field monitoring data.
科研通智能强力驱动
Strongly Powered by AbleSci AI