Impact of 2008 Hurricane Ike on Bridge Infrastructure in the Houston/Galveston Region
Impact of 2008 Hurricane Ike on Bridge Infrastructure in the Houston/Galveston Region
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DOI：
10.1061/(asce)cf.1943-5509.0000213
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发表时间：
2012-08
影响因子：
2.5
通讯作者：
M. Stearns;J. Padgett
中科院分区：
文献类型：
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作者：
M. Stearns;J. Padgett
2008年飓风艾克产生的风暴潮、狂风和海浪对德克萨斯州休斯顿/加尔维斯顿地区的交通基础设施造成了严重破坏。本文介绍了飓风艾克袭击后休斯顿/加尔维斯顿地区桥梁基础设施受损的经验教训，并与过去飓风事件中影响飓风荷载下桥梁性能的常见失效模式和设计细节的经验证据进行了比较。开发了一套丰富的损坏数据，利用事后检查和勘测数据，为53座受损桥梁提供桥梁类型、故障模式和浪涌高程等详细信息。该地区许多受损的建筑物不是木材建造的，就是低净空的跨水桥梁，这些桥梁往往被风暴潮和波浪荷载完全摧毁。冲刷和碎片也阻碍了主要结构和农村桥梁的性能。从这些结构的性能的证据突出了需要新的设计替代品或改造，如使用剪切键和限制器电缆，格栅甲板，或更换木桥箱涵结构，以及其他解决方案。
The storm surge, wind, and waves produced by Hurricane Ike in 2008 caused notable damage to the transportation infrastructure in the Houston/Galveston region of Texas. This paper presents the lessons learned from damage to bridge infrastructure in the Houston/Galveston region observed after Hurricane Ike, with comparisons to empirical evidence from past hurricane events on common failure modes and design details affecting bridge performance under hurricane-induced loads. A rich set of damage data is developed, drawing upon postevent inspections and reconnaissance data to present details such as bridge type, failure mode, and surge elevation for the 53 damaged bridges. Many of the damaged structures in the region were either constructed of timber or were low-clearance water-crossing bridges, and these bridges were often completely destroyed by the storm surge and wave loading. Scour and debris also hampered the performance of both major structures and rural bridges. The evidence from the performance of these structures highlights the need for new design alternatives or retrofits such as the use of shear keys and restrainer cables, grated decks, or replacement of timber bridges with box-culvert structures, among other solutions.