基于积水高度的下凹桥区交通信号实时控制仿真模拟OA北大核心CSTPCD

At present,there is no linkage between the ponding mode and traffic control of bridge concave ar-ea in major cities,and the traffic safety and emergency treatment are missing when bridge concave area is ponding.This paper systematically analyzed the specific forms of waterlogging level perception,safety warning signs and traffic signal control of bridge concave area in rainfall.Meanwhile,the control mode of the phase signal timing of the traffic intersection around the bridge concave area was determined,so as to establish the real-time traffic control system of the bridge concave area based on water height.In the paper,the traffic simulation test environment was adopted to simulate and evaluate the adaptability and improve-ment effect of the phase signal timing optimization scheme at the intersection around the bridge concave ar-ea under different waterlogging heights.The results show that the rain increases the overall concave sur-rounding the bridge intersection delays and queue length,and phase signal timing optimization can effec-tively improve the concave around bridge intersection traffic capacity and the whole service level crossings,and reduce negative influence of intersection traffic rainfall weather,but can't change the intersection delay and queue length growth trend.