When the District of Columbia’s 29th Street Bridge needed replacing, the District Department of Transportation [Washington, DC] chose FiberSPAN™.Composite Advantage纤维增强的聚合物桥甲板产品为联邦区提供了传统材料无法获得的关键性能优势。新桥穿越了贯穿华盛顿特区乔治敦的原始C&O运河,是该地区的第一个玻璃纤维增强车辆桥甲板。
Crumbling reinforced concrete and exposed, rusting steel rebar coupled with a requirement to reduce dead load on old stone canal walls demanded a lighter weight bridge deck solution. The project also had to be completed in half the time normally reserved for bridge deck replacement work due to logistics challenges associated with utility lines that ran beneath the bridge and crossed over gas, water, PEPCO and telecommunications lines. Five lightweight, corrosion resistant FiberSPAN bridge deck panels were installed in just one day on a steel beam superstructure. It took only one more day to bolt the panels to shear studs welded to steel beams and add an fiberglass reinforced polymer (FRP) sidewalk.
“The DDOT and its consulting engineer evaluated several design options,” says Scott Reeve, president of Composite Advantage. “This configuration was chosen because bridge depth was very restricted. The bridge had to clear tour boats using the canal but match the existing street level. Using longitudinal steel beams for high bending stiffness, we designed the FiberSPAN deck within an allowable depth of five inches and tested it to demonstrate its ability to support required truck loads.”
The new FRP short span bridge, 39 feet long by 32 feet wide, has a fiberglass reinforced sidewalk panel bonded across its west side. Granite curbs are attached on the deck’s edges. The bridge deck has an asphalt wear surface while pavers added to the sidewalk match its surface to adjacent walkways. The bridge helps support the canal’s older stone walls and maintain their vertical position. The FRP sidewalk is a new feature CA made available to designers.
CA是非常大的纤维增强复合零件的领先制造商,最大52英尺,用于结构要求的应用和腐蚀性环境。复合优势将创新设计与有效的制造过程相结合,为客户提供解决技术挑战的产品。高级材料公司主要为基础设施亚博网站下载和建筑行业提供服务,制造了大型,复杂的零件,其中包含饰面和组装详细信息,客户需要降低安装成本。复合优势产品从车辆和行人桥,海滨基础设施以及火车站平台到高性能垫和垫子。