GOALI/RUI: Development of Innovative New Highway Bridge System

GOALI/RUI：创新型新型公路桥梁系统的开发

• 批准号: 0969676
• 负责人: Nabil Grace
• 金额: $ 25.5万
• 依托单位: Lawrence Technological University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-07-15 至 2015-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0969676&HistoricalAwards=false
• 关键词: GOALI; RUI; Development; Innovative; New

In this investigation, an innovative and corrosion free decked bulb-T beam bridge system will be studied. The new side-by-side decked bulb-T beam bridge system consists of (a) decked bulb-T beams prestressed and reinforced with non-corrosive strands (carbon fiber reinforced polymer, CFRP), (b) integral transverse diaphragms post-tensioned with unbonded CFRP, and (c) an integral wearing surface. This investigation consists of a number of phases that will be carried out on four full-scale decked bulb-T beams and on one bridge model. Service load, cracking load and ultimate load carrying capacity of the new beams will be determined. Finally, the developed decked bulb-T beam bridge system will be tested and evaluated. A comprehensive finite element analysis will be conducted.The combination of newly developed CFRP with high strength concrete in the decked bulb-T beam bridge system will enhance its capacity, durability, and life-span as well as reduce the cost of maintenance. Introduction of this innovative bridge system will deliver a cost-effective infrastructure system to meet America?s present and future needs. Interaction with composite and construction industries as well as with state engineers and concrete precasters will be a significant benefit to the highway bridge industry and to LTU students. This project requires multidisciplinary research, in new materials, structural engineering, instrumentation, load analysis, computer simulation and construction and bridge economics.

在本次调查中，将研究一种创新且无腐蚀的球头 T 梁桥系统。新型并排球头 T 梁桥系统由 (a) 预应力并用耐腐蚀钢丝（碳纤维增强聚合物，CFRP）加固的球头 T 梁桥系统组成，(b) 后张整体横向隔板具有未粘合的 CFRP，以及 (c) 整体磨损表面。这项研究由多个阶段组成，将在四个全尺寸甲板球 T 形梁和一个桥梁模型上进行。新梁的使用荷载、开裂荷载和极限承载能力将被确定。最后，将对开发的球头T梁桥系统进行测试和评估。将进行全面的有限元分析。新开发的CFRP与高强度混凝土在盖式球头T梁桥系统中的结合将提高其承载能力、耐久性和寿命，并降低维护成本。这种创新桥梁系统的引入将提供一个具有成本效益的基础设施系统，以满足美国当前和未来的需求。与复合材料和建筑行业以及国家工程师和混凝土预制件的互动将为公路桥梁行业和 LTU 学生带来重大好处。该项目需要新材料、结构工程、仪器仪表、载荷分析、计算机模拟以及建筑和桥梁经济学等多学科研究。