计算机工程与应用
計算機工程與應用
계산궤공정여응용
COMPUTER ENGINEERING AND APPLICATIONS
2014年
18期
1-7
,共7页
交通流量%仿真%起点-终点(O-D)估计%路段阻抗%路网模型
交通流量%倣真%起點-終點(O-D)估計%路段阻抗%路網模型
교통류량%방진%기점-종점(O-D)고계%로단조항%로망모형
traffic flow%simulation%Origin-Destination(O-D)estimation%link resistance%road network
为了将交通出行需求对路网交通流量的影响进行动态的量化分析,提出了一个基于O-D矩阵估计的路网交通流量仿真模型。利用O-D矩阵估计的重力模型计算方法、复杂网络理论和路段阻抗模型,构建了路网模型;在人们出行总是选择路段阻抗最小路径的假定下,设计了出行需求的路网流量映射算法;基于离散事件仿真,在PC系统上实现了路网流量仿真系统。仿真结果表明:该仿真系统可以根据各交通子区域出行需求的变化,精确模拟路网流量和交通状态的动态演进。
為瞭將交通齣行需求對路網交通流量的影響進行動態的量化分析,提齣瞭一箇基于O-D矩陣估計的路網交通流量倣真模型。利用O-D矩陣估計的重力模型計算方法、複雜網絡理論和路段阻抗模型,構建瞭路網模型;在人們齣行總是選擇路段阻抗最小路徑的假定下,設計瞭齣行需求的路網流量映射算法;基于離散事件倣真,在PC繫統上實現瞭路網流量倣真繫統。倣真結果錶明:該倣真繫統可以根據各交通子區域齣行需求的變化,精確模擬路網流量和交通狀態的動態縯進。
위료장교통출행수구대로망교통류량적영향진행동태적양화분석,제출료일개기우O-D구진고계적로망교통류량방진모형。이용O-D구진고계적중력모형계산방법、복잡망락이론화로단조항모형,구건료로망모형;재인문출행총시선택로단조항최소로경적가정하,설계료출행수구적로망류량영사산법;기우리산사건방진,재PC계통상실현료로망류량방진계통。방진결과표명:해방진계통가이근거각교통자구역출행수구적변화,정학모의로망류량화교통상태적동태연진。
Obtaining the dynamic information of urban traffic evaluation according to travel demand is very necessary for transportation governing. This paper presents a novel road network traffic flow simulation model. Based on gravity method of O-D(Origin-Destination)estimation, complex network theory and link resistance model, a road network model is con-structed. In addition, on the assumption that reasonable people often select a path with minimum link resistance as their travel path, a mapping algorithm is presented to map travel demand to traffic flow on road network. Taking advantage of discrete event simulation method, a simulation prototype system on PC is implemented. Experimental results indicate that this simulation system can simulate the dynamic evolution of traffic flow and the state of road network in real time way based on travel demand changes, and then the effectiveness of the model is validated.