Research On The Reconstruction Of People-vehicle Collision Accident And Its Error Analysis Based On PC-Crash

At present, the conditions of traffic in China, are facing with the unprecedented challenges:our country has almost2.5%of the world’s car which makes our country becomes accident black country, caused15%of the world’s traffic accident. The huge data of traffic accident brings a high workload to the department of accident treatment, and the necessary premise to deal with traffic accident right and high-efficiency is how well the traffic accident identification did, and the effective measures of the traffic accident is an effective accident reconstruction.In our country, the people-vehicle collision is the main types of road traffic accidents, and as the people-vehicle mixed traffic for the main traffic to transportation means, caused by high casualty rate, so how to make the protection of pedestrian is the very serious social problem. What can be reconstructed the part of people-vehicle collision and explicit the part of people injured is the people-vehicle collision reconstruction which provides effective basis to protect the passerby. Therefore, the people-vehicle collision reconstruction has important social value and significance.In order to present the typical problems and its answers, through collection and analysis the traffic accident data, study the collision form and position of the accident and the characteristics of the pilot, vehicles, people in the people-vehicle collision and the injury mechanism and evaluation index of the passerby, analysis the principles of mechanics in the people-vehicle collision reconstruction and the collision theory in the PC-Crash software. Using PC-Crash software, establish of vehicles and pedestrians model, to reappearance the actual people-vehicle collision cases and analysis the errors of the results of the reappearance:First, using experience analysis to delete those parameters that won’t be obvious produce larger error to the accident in normal times; and then selection different sizes of value to the rest of the parameters with control variable method, watch the influence of the parameters on the results of the simulation,from the indexes of the displacement of vehicle and passerby and the injury severity of people, and screen to the parameters of the little impact to the simulation results; finally as the total displacement of the vehicles and pedestrians for index design orthogonal test, judge the significant influence of the parameters on the simulation results, and arrange the parameters according to the size and weight. It can provide a basis of adjustment parameters for people-vehicle collision reconstruction.With a typical case of people-vehicle collision, using PC-Crash software to conduct the model of the accident in the two people-vehicle collision accident which have the certain representation, making the conclusion and verification in the process.