山地城市樞紐區域交通方式劃分仿真研究以重慶東站為例

中圖分類號：U491 文獻標志碼：A 文章編號：1003-5168(2025)11-0070-04

DOI:10.19968/j.cnki.hnkj.1003-5168.2025.11.015

Research on Traffic Mode Split Simulation in Mountainous City Station

Area

—TakingChongqing EastRailway Stationasan Example JIN Rui (Chongqing Jianzhu College， Chongqing 40o072， China)

Abstract: [Purposes] To explore the law of multi-mode travel in hub areas of mountainous cities is significant to the formulation of transportation strategies under the integrated development of station and city.[Methods] Talking Chongqing East Station as the research object，the MNL travel choice model was constructed based on the data of weekday peak hours，and the traffic operation characteristics under mountainous terrain were analyzed，and compaction by VISSIM simulation.[Findings] The study reveals the cost-sensitive characteristics of multimodal travel in mountainous city hubs，reflects the roleof dense road network structure in promoting slow travel，and verifiesthedecision-making logic of walking substitution when community buses are insufficient.[Conclusions] The \"comprehensive cost optimization\" prediction framework is proposed，and the model accuracy is improved through RP survey and dynamic OD iterations，which providesquantitative supports forcoordinating rail transit and non-motorized travel systems and optimizing thereliabilityof mountain road networks，and has practical values for the coordinated development of stations and cities.

Keywords: urban traffic; mountainous city; VISSIM; railway hub; transportation development strategy

0 引言

山地城市受地形限制，路網結構復雜，次干路及支路通行能力較弱[]。高鐵樞紐區域可提供研究城市功能、空間與多模式交通需求相互作用的場景[2]。傳統交通需求預測將車輛簡化為統一流體模型[3-4后采用四階段法5進行分析，但其存在三方面缺陷：一是忽視山地道路沖擊波效應，二是未有效關聯出行方式選擇枝，三是難以調控多模式交通供需平衡。本研究提出融合集計/非集計方法與迭代模擬的新模型，通過劃分交通模式，預測出行強度，在交通分布環節采用重力模型引入阻抗參數，在方式選擇階段細化路徑層面交通成本，并通過反饋標定整合項目規劃與地形特征。該方法突破了傳統模型對局部地形影響的忽略，實現了需求預測的系統優化。

1客流調查

從重慶市交通綜合信息平臺中重慶茶園組團工作日平均車速數據來看，山地城市交通呈現顯著潮汐特征。樞紐客流全天活躍(除凌晨），晚高峰在18：00—21:00。基于高鐵樞紐區域HBW（通勤）與HBO（中遠程出行/購物）復合出行特征，18：00—19:00疊加通勤高峰壓力最大。

2基于山地城市樞紐的交通需求模型

本研究采用4種模型解析站城多模式出行，基本流程為OD矩陣(源點-終點矩陣)生成一機動化分擔率計算一路網流量分配一仿真反饋優化，進而輸出分擔率，具體如圖1所示。

2.1生成(吸引)模型

重慶東站地塊待建，參考規劃數據(用地、容積率等)和相關部門規定的交通吸發率，基于函數法及36個國內樞紐樣本標定參數，構建初始出行發生 P_station 和吸引 A_station 模型，見式（1)。……