Prof. Chengji Liang Profile

Prof. Chengji Liang

SPIE Involvement:

Author

Publications (2)

This will count as one of your downloads.

You will have access to both the presentation and article (if available).

DOWNLOAD NOW

This content is available for download via your institution's subscription. To access this item, please sign in to your personal account.

Email or Username Forgot your username?

Password Forgot your password?

Show

Keep me signed in

No SPIE account? Create an account

Proceedings Article | 7 September 2023 Paper

Flexible hybrid scheduling optimization study of railroad container hubs under sea-rail intermodal transport

Zhenyao Zhang, Chengji Liang, Yu Wang

Proceedings Volume 12790, 127905Y (2023) https://doi.org/10.1117/12.2689533

KEYWORDS: Safety, Education and training, Genetic algorithms, Transportation, Mathematical optimization, Lithium, Bridges, Roads, MATLAB, Design and modelling

Read Abstract +

In the container sea-rail intermodal transport port, the railroad container center station is an important connection point between railroad transport and waterway transport, and its operation efficiency will affect the transport quality, the comprehensive efficiency and service level of railroad container transport network and multimodal transport system. In view of the current problems of unbalanced operation resource scheduling and slow container transfer speed in the sea-rail intermodal transportation, the flexible mixed loading and unloading mode of "rail crane - container truck" and "rail crane - yard" is proposed. Considering the constraints such as the interference between rail crane and container truck operation and the safety distance between different rail cranes, the flexible hybrid loading and unloading model of multiple rail cranes is established with the objective of minimizing the maximum completion time of rail cranes, and a forbidden search algorithm is designed to solve the problem according to its characteristics. In order to verify the effectiveness of the algorithm and the proposed flexible hybrid loading and unloading model, experiments are conducted using the taboo search algorithm and the traditional genetic algorithm at different scales of arithmetic cases, and comparative analysis is performed with the traditional loading and unloading model. The results show that the taboo search algorithm outperforms the genetic algorithm in terms of calculation results and calculation time, while the flexible hybrid scheduling mode outperforms the traditional fixed loading and unloading mode in terms of shortening the unloading operation time and equalizing the workload between multiple rail cranes. This hybrid loading mode and algorithm can provide an efficient and intelligent solution for railroad container transfer stations and similar transfer centers.

Proceedings Article | 23 November 2022 Paper

Research on the opening plan of railway container express trains based on passenger transport mode

Mengyu Tang, Chengji Liang, Chuanzhong Yin

Proceedings Volume 12302, 123025P (2022) https://doi.org/10.1117/12.2645496

KEYWORDS: Genetic algorithms, Roads, Optimization (mathematics), Computer programming, Mathematical modeling, Detection and tracking algorithms, Analytical research

Read Abstract +

In order to meet the market demand for large-scale express transportation and develop railway express. This paper draws on the traditional railway passenger travel mode, and studies the passenger-oriented railway container express train travel mode considering the stopover. First, according to the predicted flow of express boxes between major cities, a container transportation network diagram is constructed. Then, considering the two decision-making problems of the train stop plan and the flow plan of the trains carried at each station, the road a mixed-integer programming model with minimum cage hour consumption as the goal, and a two-layer genetic algorithm is designed to solve the problem. Finally, taking Shanghai Station-Chengdu Station as an example, a direct express container train from Shanghai to Chengdu and a passenger railway container express train with a stopover are compiled, and the algorithms are compared. The results show that the opening of railway container express trains that consider stopovers can reduce the transit time of express goods while meeting the express transportation needs of Shanghai-Chengdu stations. The solution obtained by the double-layer genetic algorithm is better than the single-layer genetic algorithm, and the gap between the approximate solution obtained by the two-layer genetic algorithm and the optimal solution obtained directly by GAMS is 1.25%.

My Library

You currently do not have any folders to save your paper to! Create a new folder below.

Folder Name

Folder Description

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks. You are receiving this notice because your organization may not have SPIE eBooks access.*

*Shibboleth/Open Athens users─please sign in to access your institution's subscriptions.

To obtain this item, you may purchase the complete book in print or electronic format on SPIE.org.

ORGANIZATIONAL
Sign in with credentials provided by your organization.

Organizational Username

Organizational Password

Show/Hide Password

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members:

Non-members: ADD TO CART

Keywords/Phrases

Search In:

Publication Years