【摘要】 为了评估因桥梁颤振带来的经济风险,提出了一种全新的桥梁颤振风险评估方法。该方法基于一种已有的4变量桥梁颤振可靠度模型,先采用Monte Carlo方法计算桥梁颤振的失效概率,然后用货币的形式定量地刻画桥梁颤振的风险,并引入效用理论进行风险决策。最后,运用该方法对上海颗珠山斜拉桥进行了颤振风险分析。结果表明:该方法简单实用,所得的结果可以作为桥梁投资和保险定价的依据。更多还原

【Abstract】 In order to assess the economic risk of bridge flutter,authors presented a new method of risk assessment analysis of bridge flutter.Firstly,based on an existed bridge flutter reliability model of four variables,bridge failure probability under flutter was calculated by Monte Carlo method.Then, the flutter risk was quantificationally described by means of money,and the utility theory was introduced into risk decision.Finally,this method was applied to the flutter risk assessment of Shanghai Kezhushan Cable-stayed Bridge,whose results could be used for decision making of bridge investment and insurance pricing.更多还原