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为研究山区高速公路桥隧群路段行车系统车辆安全状态演化趋势,基于山区高速公路桥隧群行车系统的自适应行为和脆性特性,剖析系统脆性与安全熵的关系,进而分析桥隧群行车系统的崩溃过程,建立桥隧群行车系统脆性行为的适应性Agent图。依据安徽省山区高速公路桥隧群车辆追尾事故统计资料,对桥隧群行车系统脆性行为进行仿真,验证适应性Agent图在桥隧群行车安全方面应用的合理性和可行性。仿真结果表明:关键顶点的崩溃会很快导致整个系统崩溃;各顶点状态初值对整个系统的崩溃有重大影响;整个系统的崩溃有一定的延迟性。
In order to study the evolvement trend of the vehicle safety status of the traffic system of the bridge section of mountain highway, based on the adaptive behavior and brittleness characteristics of the traffic system of the bridge section in mountainous expressway, the relationship between system brittleness and safety entropy is analyzed. The collapse process, the bridge group to establish a brittle behavior of the traffic system adaptive Agent map. According to the statistical data of vehicle rear-end accident of bridge-tunnel group in mountain highway in Anhui Province, the brittleness behavior of the bridge-group group driving system is simulated to verify the rationality and feasibility of adaptive Agent map in the traffic safety of bridge-tunnel group. Simulation results show that the collapse of key vertices will lead to the collapse of the entire system quickly. The initial state of each vertex has a significant impact on the collapse of the entire system. The collapse of the entire system has some delay.