Increasing Blast-Resistance of Cable-Stayed and Suspension Bridges

提高斜拉桥和悬索桥的抗爆能力

• 批准号: 0628815
• 负责人: Abolhassan Astaneh-Asl
• 金额: --
• 依托单位: University of California-Berkeley
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-07-01 至 2007-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0628815&HistoricalAwards=false
• 关键词: Increasing; Blast; Resistance; Cable; Stayed

Abstract: CMS-0628815The main goals of the proposed Small Grant Exploratory Research are: (a) to study performance of long span bridges subjected to blasts occurring on the deck and; (b) to develop technologies that can be used to harden these bridges economically to prevent their progressive collapse. The types of long span bridges included in the proposed study are suspension bridges (both anchored to the ground and self-anchored) and cable-stayed bridges. The deck systems to be considered in the study are the steel orthotropic and composite plate girders. The parameters varied in the study are material properties, type of deck, axial force in the deck and the size of explosive device. The expected results will be in the form of technologies that can be used to limit the damage to a small area of the roadway and to prevent global or partial collapse of the bridge span. Special care will be taken to ensure that no information on vulnerabilities of these bridges is released to the public. Instead, the public information will provide the bridge engineering community with the concepts and technologies that can only be used in a positive way to minimize the damage to these bridges and to prevent their catastrophic collapse.

摘要：CMS-0628815拟议的小额赠款探索性研究的主要目标是：（a）研究承受桥面爆炸的大跨度桥梁的性能;（B）开发可用于经济地硬化这些桥梁以防止其连续倒塌的技术。 拟议研究中包括的大跨度桥梁类型是悬索桥（既有锚定在地面上的，也有自锚式的）和斜拉桥。 研究中考虑的桥面系为正交异性钢组合板梁。在研究中改变的参数是材料特性、甲板类型、甲板中的轴向力和爆炸装置的尺寸。 预期的结果将以技术的形式出现，这些技术可用于将损坏限制在小范围的道路上，并防止桥梁跨度的整体或部分坍塌。 将特别注意确保不向公众发布有关这些桥梁脆弱性的信息。 相反，公共信息将为桥梁工程界提供只能以积极的方式使用的概念和技术，以尽量减少对这些桥梁的损害，并防止其灾难性倒塌。