Predicting the Bounds of Vehicle-Induced Bridge Responses Using the Interval Analysis Method
Predicting the Bounds of Vehicle-Induced Bridge Responses Using the Interval Analysis Method
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DOI：
10.1061/(asce)be.1943-5592.0000911
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发表时间：
2016-02
影响因子：
3.6
通讯作者：
Qiling Zou;L. Deng;Chao Jiang
中科院分区：
文献类型：
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作者：
Qiling Zou;L. Deng;Chao Jiang
摘要提出了在桥梁和车辆参数不确定的情况下，预测桥梁车辆反应界限的方法。桥梁和车辆参数的不确定性用区间变量来表示，而不是用概率分布已知的常规随机变量来表示。首先，建立了三维车桥相互作用系统，该系统没有闭合形式的解，可以考虑路面不平度。然后，通过引入基于一阶泰勒级数展开的区间分析方法，将桥梁响应(包括跨中位移和弯矩)的表达式显式地表示为区间参数的函数，并利用粒子群算法而不是直接区间算法来确定桥梁响应的上下界，以避免对响应的过度高估。还可以采用子区间技术来提高IAM的精度。一个不..。
AbstractA method for predicting the bounds of vehicle-induced bridge responses with uncertain bridge and vehicle parameters is presented. The uncertainties in the parameters of the bridge and vehicle are represented with interval variables instead of conventional random variables with known probability distributions. First, a three-dimensional vehicle–bridge interaction (VBI) system, which has no closed-form solution and can account for road roughness, is established. Then, by introducing the interval analysis method (IAM) based on the first-order Taylor series expansion, the expressions of the bridge responses, including displacement and bending moment at the midspan, can be explicitly given as functions of the interval parameters, and the lower and upper bounds of the bridge responses are determined by the particle swarm algorithm instead of direct interval arithmetic to avoid excessive overestimation of the responses. The subinterval technique can also be adopted to improve the accuracy of the IAM. A n...