本文關(guān)鍵詞：道路網(wǎng)單向交通優(yōu)化設(shè)計模型，由筆耕文化傳播整理發(fā)布。

道路網(wǎng)單向交通優(yōu)化設(shè)計模型

Optimization design model of one-way traffic for road network

[1] [2] [3] [4]

YANG Zhong-zhen , WU Shan-hua , LUO Hong-hong , JIAO Xin-long （1. School of Transportation Management, Dalian Maritime University, Dalian 116026, I.iaoning, China; 2. Insti

[1]大連海事大學(xué)交通運輸管理學(xué)院,遼寧大連116026; [2]中國科學(xué)技術(shù)信息研究所,北京100038; [3]寧波工程學(xué)院交通與物流學(xué)院,浙江寧波315211

文章摘要：為了提高道路網(wǎng)的通行能力和服務(wù)水平，提出了單向交通組織的雙層規(guī)劃模型。上層模型的目標(biāo)函數(shù)為最小總走行時間、最短繞行距離和最少交叉口沖突點數(shù)量，用于求解單向交通的優(yōu)化方案；下層模型為用戶均衡交通量分配模型，用于計算上層模型給出的道路網(wǎng)中的路段交通流特征。提出路段組合、可行解判斷等方法減少決策變量和解空間，設(shè)計多目標(biāo)遺傳算法進(jìn)行求解，并以威海市數(shù)據(jù)進(jìn)行實例分析。分析結(jié)果表明：在實施單向交通組織后，機(jī)動車流量與道路容量的平均比值由o．516l下降至o．4871，平均值的方差從o．4189下降至o．3791，機(jī)動車的平均出行時間由27．1rain下降至25．4min，單行引起的平均繞行時間僅有0．61min�？梢姡�，提出的模型可應(yīng)用于中等城市道路網(wǎng)的單向交通方案設(shè)計。

Abstr：In order to improve the capacity and service level of road network, a bi-level programming model for one-way traffic was put out. The objective functions of upper-level model were the minimum total trip time, the shortest bypassing distance and the least conflict point number, and the upper-level model was used to solve the optimized scheme of one-way traffic. The lower-level model was user equilibrium traffic assignment model, and was used to calculate the traffic flow characteristic of section in road network from the upper-le,）el model. The methods such as road section combination and feasible solution judgment were put out to decrease the decision variables and the solution space, the multi-objective genetic algorithm was designed to find the solutions, and example analysis was carried out by the data in Weihai City. Analysis result indicates that after the implementation of one-way traffic, the average ratio of vehicle flow to road capacity decreases from 0. 516 1 to 0. 487 1, and the variance of average ratio reduces from 0. 418 9 to 0. 379 1. The average trip time of vehicle decreases from 27.1 min to 25.4 min, while the average circumambulated time caused by one way traffic is only 0.61 min. It is clear that the proposed model can be used in the scheme design of one-way traffic in a medium-sized city. 10 figs, 17 refs.

文章關(guān)鍵詞：

Keyword：:traffic planning one-way traffic bi-level programming model user equilibriumassignment multi-objective genetic algorithm road section combination feasible solution

課題項目：國家自然科學(xué)基金項目（51078049）;寧波市自然科學(xué)基金項目（2012A610153）

作者信息：會員可見

  本文關(guān)鍵詞：道路網(wǎng)單向交通優(yōu)化設(shè)計模型，由筆耕文化傳播整理發(fā)布。