DV3+HED+: a DCNN-based framework to monitor temporary works and ESAs in railway construction project using VHR satellite images

2020 ◽  
Vol 14 (01) ◽  
pp. 1 ◽  
Author(s):  
Rui Guo ◽  
Ronghua Liu ◽  
Na Li ◽  
Wei Liu
Keyword(s):  
Satellite Images ◽  
Construction Project ◽  
Railway Construction ◽  
Railway Construction Project

Research on Schedule Planning Management of Railway Construction Project Based on CAS

2011 ◽  
Vol 403-408 ◽  
pp. 2560-2563
Author(s):  
Xiang Dong Zhao ◽  
Hao Lian ◽  
Dong Sheng Zhang
Keyword(s):  
Project Management ◽  
Conceptual Model ◽  
Construction Projects ◽  
Construction Project ◽  
Project Manager ◽  
Operational Planning ◽  
Allocation Of Resources ◽  
Master Schedule ◽  
Railway Construction ◽  
Railway Construction Project

The CPM and PERT are the most popularly used underlying method of schedule planning of construction project, Problematically, CPM and PERT depend on the experiences of project manager, which is not true in railway construction project. A huge deviation occurs between the actual progress and planned schedule. This leads to unreasonable allocation of resources and cost increment. Referring to the characteristics of schedule planning of railway construction projects, we proposed schedule planning conceptual model of railway construction project based on CAS. The model consists of three parts. They are master schedule, forecasting planning and operational planning. Forecasting planning is produced by master schedule and adjusted by operational planning dynamically. In addition, RBF neutral network is employed to improve the accuracy of master schedule. The paper provides novel viewpoint and idea for project management of railway construction.

The Research on Railway Construction Project Materials Supplier Selection Model

2014 ◽  
Vol 919-921 ◽  
pp. 1503-1508
Author(s):  
Ai Min Li ◽  
Guo Qing Wang ◽  
Jing Jing Zhang
Keyword(s):  
Supplier Selection ◽  
Construction Projects ◽  
Cost Control ◽  
Construction Project ◽  
Indicator System ◽  
General Construction ◽  
Main Concern ◽  
Selection Methods ◽  
Railway Construction ◽  
Railway Construction Project

In recent years railway constructions are attracted many large investments, and generally 60-70% percentage of project budget are cost in the materials supplies, which are the main concern of the railway construction projects cost control. In this paper, we do some researches on suppliers choice to investigate the logic of railway construction projects supplies cost control. The structure is firstly to build the indicators of general construction project materials supplier selection, then to find criterion of general construction project materials supplier selection, and thirdly considering the projects distinctiveness to select the line with the actual situation of railway projects suppliers indicators. At last combined all the results of front researches to construct an indicator system for railway construction project materials supplier selection, and further study the supplier selection methods which are based on the indicator system and verified by an example.

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