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Martin Marietta复合材料公司的组合式Dura Span面板体系最近安装在美国俄勒冈州Astoria的Lewis & Clark吊桥上。此获专利的E-玻纤/聚酯梯形管拉挤面板产品是俄勒冈交通局为有77年历史的桥升级需4.9百万美元更新项目的一部分。木桥面板中水分的变化引起桥的开合跨平衡装置的养护问题,并且木桥面板通常约每20年要更换。此新型复合材料桥面板期
Martin Marietta Composites’ modular Dura Span panel system was recently installed on the Lewis & Clark drawbridge in Astoria, Oregon. This patented E-glass / polyester trapezoidal tube pultruded panel product is part of the $ 4.9 million update required by the Oregon Department of Transportation for a 77-year-old bridge upgrade. Changes in the moisture content of the bridge deck cause problems with the maintenance of the bridge opening and closing transversally balanced device, and the bridge deck panels are usually replaced every about 20 years. This new composite bridge deck period