A Study on Integrated Construction of Luzhou Comprehensive Transportation Hub

The target of integrated construction of comprehensive transportation hub is to integrate the traffic resources,achieve butt joint of pan-regional transportation mode,and finally realize the"seamless connection"of the goods and"zero transfer"of the passenger traffic.Relying on the particularity of the geographical location and the convenience of the Yangtze River channel,Luzhou puts forth effort to build a comprehensive transport hub in Southern Sichuan and has made great efforts in traffic infrastructure construction.However,there are still some problems.Combining practice of Luzhou,using the advanced experience of foreign and domestic cities for reference,the paper pointed out that for the sake of constructing a comprehensive transportation hub,we need to build the traffic integration on the basis of the efficiency.Besides,the paper proposed the strategies for construction.

A Study on Integrated Construction of Luzhou Comprehensive Transportation Hub

The target of integrated construction of comprehensive transportation hub is to integrate the traffi c resources, achieve butt jointof pan-regional transportation mode, and fi nally realize the “seamless connection”of the goods and “zero transfer” of the passenger traffi c.Relying on the particularity of the geographical location and the convenience of the Yangtze River channel, Luzhou puts forth effort to build acomprehensive transport hub in Southern Sichuan and has made great efforts in traffi c infrastructure construction. However, there are still someproblems. Combining practice of Luzhou, using the advanced experience of foreign and domestic cities for reference, the paper pointed out thatfor the sake of constructing a comprehensive transportation hub, we need to build the traffi c integration on the basis of the effi ciency. Besides, thepaper proposed the strategies for construction.

Deformation characteristics and instability mechanism of transportation hub under downward traversal conditions of the double-track super-large diameter shield tunnel

To investigate the deformation characteristics and instability mechanism of the transportation hub underdownward traversal conditions of the double-track super-large diameter shield tunnel, take the example of BeijingEast Sixth Ring Road into the ground reconstruction project. Using the field experimental monitoring method andnumerical simulation method, after verifying the accuracy of the model, this manuscript begins to unfold theanalysis. The results show that, without any deformation prevention and control measures, The basement raft ofthe underground structure of the transportation hub will produce a deformation difference of 18 mm, and thetensile stress is more than 1.43 MPa, the inhomogeneous deformation and structural cracking will lead tostructural instability and groundwater surges, which seriously affects the safe operation of the transportation hubstation. When control measures are taken, the deformation and stress of the base raft slab of the undergroundstructure of the transportation hub are within the prescribed limits, which can ensure the safe operation of thestation. The displacement of the base slab of the underground structure in the horizontal direction of the crosssection is all pointing to the east, and the overall trend is to shift from the first tunnel to the backward tunnel. Thehorizontal displacement of the base slab in the direction of the tunnel axis all points to the beginning of thecrossing, and the displacement of the slab in the vertical direction is distributed as "rising in the middle andsinking in the surroundings". For a two-lane super-large diameter shield tunnel penetrating an undergroundstructure, there are two mechanical effects: unloading rebound and perimeter rock pressure. The above deformation characteristics are the superposition effect produced by the two, and this fine assessment of the deformation of the raft foundation provides a scientific basis for formulating the deformation control countermeasuresof the crossing project. At the same time, it makes up for the blank of the double-track super-large diameter shieldtunnel down through the transportation hub project.

A review on passenger emergency evacuation from multimodal transportation hubs

Multimodal transportation hubs serve as transfer points with the function of collecting,transferring,and distributing passengers and play a significant role in the entire multimodal transportation network.In an emergency,the development of an effective and efficient emergency evacuation strategy to evacuate passengers from multimodal transportation hubs is very important.This paper aims to conduct a comprehensive review on passenger emergency evacuations from multimodal transportation hubs,summarize the achievements,identify gaps in existing literature,thus to lay a solid foundation for future studies.This paper first reviewed studies on evacuee behavior characteristics in emergency evacuations,including pedestrian characteristics,pedestrian behavior characteristics,and pedestrian flow characteristics.Then evacuation models,including pedestrian evacuation models and multimodal transportation evacuation models,were investigated.In addition,a retrospective analysis was carried out for evacuation simulation.It is found that while many studies have been conducted on passenger emergency evacuations from multimodal transportation hubs,most of them focus more on evacuating pedestrians from inside to outside of hub buildings;the studies on evacuation at multimodal transfer points are limited.It is also found that most existing studies tried to establish a general model to handle all types of emergency evacuations;in fact,a model would be more efficient if it is just established for a specific emergency and for a specific type of hubs.Also,existing data collection methods may collect biased data;new data collection methods need to be explored to increase the accuracy of data collection.Future study directions include the evacuation at multimodal transfer points,interactive effects between individual pedestrian behavior and pedestrian group behavior,more specific types of emergency evacuations,more accurate data collection methods,and tradeoffs between cost and benefit in emergency evacuations.

Constructing Hongqiao Hub and Serving Regional Economy:Planning and Operation of Hongqiao Comprehensive Transportation Hub

Taking Hongqiao Integrated Transportation Hub Project as a case, this paper introduces its origin, orientation, development programming, planning and design, road planning, information system planning, air-rail integrated transportation planning, disaster prevention planning, and so on.

Effects of Comprehensive High-speed Transportation Hubs on Spatial Structure of Urban Development:A Case Study on Changsha-Zhuzhou-Xiangtan Area

This paper, by studying the mechanism of the spatial restructuring of urban development and the effects of comprehensive high-speed transportation hubs on it, analyzes the development trends of comprehensive high-speed transportation in Changsha-Zhuzhou-Xiangtan Area and the impacts of the growing urban area centered on comprehensive high-speed transportation hubs, like airport and high-speed railway station, on the urban development of this area. It also proposes some strategies for the spatial restructuring of Changsha-Zhuzhou-Xiangtan Area in view of the development of the comprehensive high-speed transportation hubs, like Huanghua Airport and Wuhan-Guangzhou High-speed Railway Station.

The Hub Status and Transportation Network of Kribi Port

In this paper, a study on four African ports was taken out that all have the ca-pability to become a hub port that can serve the central African region. The paper sort to determine which port was most suitable and port indexing was the method that was used to evaluate these ports. The ports evaluated were the port of Kribi, the port of Bata, the port of Libreville and the port of Pointe-Noire. There were other models that were also used which included linear regression and linear programming which all contributed to providing the final results of the port with the most suitable potential to serve as a hub port and meaningful results were obtained. The final results showed that the port of Pointe-Noire was the most suitable port to serve the central African region as a hub port.

西安市幸福路跨陇海铁路总体方案研究

随着城市发展以及对中心区域的提质优化,那些在中心城区中存在的特别难以优化提升且制约因素较多的断头路,近些年来越来越引起相关职能部门及领导的重视。本文通过对交通瓶颈区域的建设空间进行调查,分析总结了通道限制因素,以提高区域交通效率、均衡路网流量、增强交通服务功能等为目标,通过系统性地对交通状况进行分析,优化立交节点方案,强化通道的可实施性,以期为今后类似通道项目设计提供技术参考。

低碳驱动下粮食转运枢纽选址及路径优化研究

为降低粮食运输的碳排放量,提高粮食运输效率,保障粮食运输安全,从定量分析的角度,构建低碳驱动下粮食转运枢纽选址-路径优化模型,并设计改进遗传算法对该模型求解,对中国现有粮食运输网络布局进行改进和优化,并选取粮食物流重点线路上的部分省会城市进行分析验证。结果表明:研究构建的轴辐式多式联运网络枢纽节点选址-路径优化模型及算法,可使粮食运输总成本降低13.87%,碳排放量降低11.70%,枢纽的平均转运饱和度提升9.66%。该方法适用于实际粮食运输过程,可实现粮食低碳高效运输,为低碳驱动下中国粮食转运枢纽选址及路径规划提供参考。

“一带一路”视角下甘肃交通枢纽的发展思路和策略

从全球贸易新格局和国内国际双循环角度分析“一带一路”给甘肃带来新要求的基础上,剖析甘肃交通枢纽发展的基础条件,明确甘肃枢纽定位,提出强化枢纽聚能、发挥枢纽辐射带动效应,构筑对外通道、实现对外快速通达,提升对外运输服务水平、打造对外开放平台,拓展枢纽服务功能、打造枢纽经济的甘肃交通枢纽发展策略,助力甘肃打造“一带一路”枢纽高地。

基于网络点评的铁路综合交通枢纽服务评价研究

为探讨铁路综合交通枢纽使用现状,提出以网络点评作为数据来源,并基于乘客满意度展开其服务评价研究。将北京西站作为研究对象,对其网络点评数据进行编码处理和语义分析,从3方面剖析北京西站使用现状:①乘客对北京西站的关注度与满意度;②乘客行为与各个空间的关联度程度;③接驳交通、功能空间、商业、设施方面存在的问题。结果表明:北京西站整体乘车体验较好,但存在商业类型单一、慢行系统建设不充分、城市功能较弱等问题。研究展示了利用网络点评数据进行铁路综合交通枢纽使用评价研究的优势,从而为枢纽的建设或更新提供实证基础以及研究思路。

中部地区综合交通枢纽建设成效及高质量发展对策研究

促进中部地区崛起提出20年来,中部地区综合交通枢纽建设取得重要成就,综合交通枢纽战略定位持续巩固,交通基础设施绿色化、智能化水平不断提升,交通基础设施综合效益不断释放。与此同时,中部地区综合交通枢纽发展的区域不平衡性、枢纽能级辐射力弱、枢纽经济发展滞后等问题愈发凸显。在更高起点上扎实推进中部地区崛起需要持续完善“三基地一枢纽”功能定位,积极构建中部地区大通道格局,打造全国枢纽经济发展先行区,提升内陆口岸开放能级,以交通运输新质生产力支撑中部地区综合交通枢纽高质量发展。

高铁枢纽与城市轨道交通换乘流线仿真与优化

针对高铁枢纽与城市轨道交通换乘流线优化问题,以南京南站作为研究对象,建立全过程仿真模型,识别换乘瓶颈,采用梯度提升决策树法(Gradient Boosting Decision Tree,GBDT)确定参数重要度,提出改善方案.首先,分解换乘过程的行人与设施流线,分析高速铁路到达客流与城市轨道交通客流的分布特征.其次,使用AnyLogic软件建立高铁枢纽换乘城市轨道交通的全过程仿真模型,分析现状仿真结果,识别空间瓶颈.然后,设计不同优化类型下的措施参数及调整范围,形成不同参数组合方案.采取梯度提升决策树算法,识别不同措施参数的相对重要度,并据此确定改善措施的优先级.最后,依据措施的优先级,确定不同类型下的优化组合方案,选择机器学习全局可解释性方法对其进行优化效果分析,为不同场景下的服务改善提出建议.研究结果表明:换乘瓶颈主要集中于楼/扶梯通道设施以及闸机、售检票机等服务设施处;乘客换乘城轨的购票比例对平均换乘时间和单位时间最大换乘人数均起到重要影响,对于平均换乘时间,城轨自动售票机数量、购票时间、城轨进站服务时间、城轨进站闸机数量的影响相对较大,对于单位时间最大换乘人数,购票时间与城轨进站闸机服务时间的影响相对较大.为提高高铁枢纽换乘效率,建议推广电子客票和多种支付方式,优化购票及检票设施.

基于不同动力集装箱船的支线运输综合调度优化

在“双碳减排”战略和绿色航运背景下,为了对使用不同动力集装箱船的支线运输进行调度优化,以LNG动力船和燃油动力船为例,引入模糊时间窗刻画货主满意度,同时考虑支线船舶运输容量、港口限制时间等实际约束条件,综合考虑运输成本、货主满意度和碳排放量,构建了一种基于不同动力船型的混合整数规划模型。结合问题特征设计混合遗传算法进行求解,通过引入局部搜索策略提高求解质量,测试算例表明设计的混合遗传算法与最优解的平均误差为1.4%,案例计算结果表明:与遗传算法相比,混合遗传算法的收敛速度和寻优能力更强,可降低运输成本29 520元,减少碳排放38.474 t。可见,基于局部搜索的混合遗传算法的求解精度明显优于传统遗传算法,说明在实际应用中该方法可以实现船舶调度优化;同时与燃油动力船相比,使用LNG动力船可以实现降低运输成本和减少碳排放的目标。

关于打通铁路网运输能力堵点对策探究

国铁企业落实党中央部署要求并加快推进铁路货运市场化改革,采取有效措施尽快打通铁路网运输能力堵点,有效降低物流成本。通过分析路网总体规模、旅客运输供给能力、货物运输保障能力等铁路网运输能力现状,剖析铁路网运输能力堵点及成因。在此基础上,提出加强铁路网运输能力经验借鉴,探析打通铁路网运输能力堵点对策,即:畅通普速干线通道,加强煤运通道能力保障,强化中欧班列通道能力,完善港口铁路通过能力,增强西部陆海新通道线路能力,完善枢纽点线配套能力,强化铁路货运设施设备卸车能力等方面,在助力降低全社会物流成本中发挥“火车头”的重要作用。

基于最小熵值的地下交通枢纽数字化设计方法

为科学实现城市中心节点交通功能最优化、资源利用集约化、施工安全便利化的方案设计,结合光谷综合体地下交通枢纽工程实践,提出基于最小熵值的地下交通枢纽数字化设计方法。首先,结合BIM及有限元仿真交互的数字化方法,对建造方案进行仿真模拟、可视化推演、迭代优化;其次,基于各专业主要设计要求对提出的关键控制指标、特征指标等评价参数进行层次分析、归一化取值,建立熵值计算量化分析体系;最后,通过数字化方法进行交通枢纽建造方案迭代优化,基于最小熵值原则,获得交通枢纽最优建造方案。基于最小熵值的地下交通枢纽数字化设计方法,实现了交通枢纽建造方案在多专业不同影响因素中优化的量化平衡,获得可量化考察的最优方案。

考虑心理偏好的枢纽抵站旅客接续出行方式选择模型

为掌握枢纽抵站旅客的出行方式选择特征,解决接续运输运力配置协同优化与效率提升问题,基于高铁枢纽接续出行问卷调查数据,引入上次接续属性、接续方式主观重要度、枢纽服务满意度、接续出行选择倾向特征等潜在变量因素,构建考虑心理倾向的结构方程模型(Structural Equation Model,SEM)和抵站旅客接续出行方式选择多项Logit(Multinomial Logit,MNL)模型相融合的SEM-MNL模型,定量计算枢纽抵站旅客接续出行分方式选择效用函数,预测不同时段旅客接续出行方式选择概率,并对比分析SEM-MNL模型与MNL模型命中率.研究结果表明:引入心理倾向潜在变量后,模型的整体命中率提升了4.6%;对枢纽环境服务满意度越高、接续方式服务重视程度越高、上次出行的时间和距离更短且使用公共交通的出行者,更倾向于选择公共交通方式.通过方式选择模型预测分方式的接续出行需求,开展对外客运枢纽接续运输保障和多模式运力的协调调度,对于实现枢纽接续客流与运力资源的供需平衡,继而提升接续服务质量具有重要意义.

铁路站房及站场空间一体化规划探索

西安东站位居白鹿塬西麓,处于西安市高铁东城核心位置,定位将其打造成为区域性的综合交通枢纽。项目贯彻新时代发展理念,以满足人民高品质、多层次的出行需求为根本目的。基于自然地形及规划发展要求,同时结合科学合理的规模测算,提出3种不同强度站台下架空车场布置方案。通过对场地内部建设条件及人流、车流组织进行分析,最终采用1—13站台双层架空站台方案的布局模式,紧凑布设各类接驳交通功能区及旅客换乘空间。充分利用站场架空空间建构一体化综合客运枢纽,实现接驳交通设施贴临建设、换乘功能空间直接连通,提高客流组织的便捷性、有序性和高效性。

大型枢纽车站铁路信号系统增改工程设计与施工

新建广州白云火车站是未来广州市的重要交通枢纽,其规模庞大,情况复杂。该文结合现场施工实际状况,以广州白云火车站改造为例,详细描述白云火车站在新建和改建过程中,信号系统具体设计思路和施工总体技术方案,针对施工可能出现的问题,制定相应措施,确保改造工程顺利进行,为今后轨道交通枢纽信号系统施工积累经验。

城市更新背景下交通枢纽周边环境整治提升研究——以北京市东直门交通枢纽周边一体化改造为例

城市交通枢纽是城市更新的重要区域,影响周边地区的规划与土地开发,对区域和城市经济发展具有促进作用。以北京市东直门交通枢纽为例,提出周边环境整治提升策略,并创新性地提出枢纽周边环境提升“5D发展理念”,以期多维度、全方位促进区域环境综合优化。在此基础上,遵循统筹规划与分步实施的原则,精心构建道路交通、景观环境、建筑风貌、第五立面四大界面融合的整治提升框架,并细分为若干系统和关键要素,旨在通过系统性的规划与实施,实现枢纽周边环境的根本性改善与品质提升。