Padma Bridge

Bangladesh

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帕德玛大桥于2022年6月开通,是孟加拉国迄今为止最长的桥梁,跨度3英尺.82 miles (6.15公里),横跨loveBet爱博体育下载上最大的河流之一. 它通过公路和铁路极大地加强了该国西南部地区与首都达卡之间的连通性, significantly cutting travel time.

However, 设计地标性基础设施并非易事,因为它提出了相当大的挑战, 特别是该地区季风和地震活动的威胁. Dr. Robin Sham, 全球大跨度和特种桥梁总监, 我们的香港团队接受了挑战,并被任命为该项目的首席设计顾问. 

帕德玛大桥有许多工程亮点,特别是: 

  • 这是恒河上跨度和总长度最长的桥梁
  • 抗季风、抗地震、耐冲刷的桥梁设计
  • 预制492英尺跨度(150米)的钢桁架模块与预应力混凝土面板组合使用
  • 这是loveBet爱博体育下载上所有桥梁中最长最深的桩
  • 两层公路和重型(货运)铁路跨河, 由位于上层甲板的双车道和位于下层甲板的单轨货运铁路组成
  • Support of a 29.5in-diameter (750mm-diameter)气体总管和光纤通信电缆

可以抵御地震和季风

为了开发这种先进的桥梁设计. Sham和他的团队进行了广泛的工程研究和计算分析,以确定最佳的方法和材料. Tubular steel piles measuring 9.直径8英尺(3米)的桥墩以超过400英尺(122米)的角度插入河床,以抵御河水湍流对桥基周围的冲刷, especially during monsoon seasons. Meanwhile, 上部结构与桥墩顶部之间创新性地采用了摩擦摆支座进行隔震. 这有助于减轻地震的影响,因为分析表明,使用隔震支座而不是传统的罐式支座可以大大降低地震力. 

Faster and safer travel

桥梁下层的铁路连接着泛亚铁路路线,使印度和孟加拉国南海岸吉大港的集装箱港口之间的货物运输成为可能, 而该国西南部21个县与达卡之间的陆路交通也将显著改善. Previously, trips took 15 to 22 hours by ferry, 由于渡轮站排长队,有时会延长至24小时. Severe weather conditions, 大雾和极端的水流也造成了人员和货物运输的延误, resulting in rotten produce, and other economic and social setbacks. 

Improving trade

通过帕德玛大桥的直接路线有望减少这些问题,并为西南地区的农业和渔业提供通往达卡-查图格拉姆经济走廊的门户. With its completion, 这座桥预计将帮助该地区的年国内生产总值(GDP)增加2%.5%,全国GDP增长超过1%.3 percent. 

帕德玛大桥的创新设计不仅能确保它在未来许多年里经受住自然的力量, 还将加强被强大的帕德玛河隔开的地区之间的经济和社会lovesport爱博体育.