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Title:

SLOPE STABILITY EVALUATION OF RAILWAY EMBANKMENT UNDER RAINFALL FOR RAIL-TRANSPORT OPERATION CONTROL

Accession Number:

00982653

Record Type:

Component

Availability:

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Order URL: http://worldcat.org/isbn/0947644490

Abstract:

The rail-transport operation control plays an important role in enhancing the safety of train under rainfall and is generally based on statistical analysis or empirical method of the collapsed slopes by rainfall. There is a few operation control system based on the engineering approach except some case studies reported. Therefore, in this paper, it is suggested that new possibility of rail-transport operation control during rainfall could be made by clarifying the relationship between the stability of railway embankment and rainfall introducing partial saturation concept of ground. Infiltration of rainfall causes railway embankment to be unstable and may result in failure. Basic relationship between the rainfall and stability of railway embankment is defined to analyze the stability of embankment by rainfall. A pressure plate test is also performed to obtain soil-water characteristic curve of unsaturated soil. Based on this curve, the variables in the shear strength function and permeability function are also defined. These functions are used for the numerical model for evaluation of railway embankments under rainfall. As comparing the model and case studies, the variation of shear strength, the degree of saturation and pore-water pressure for railway embankment during rainfall can be predicted and the safety factor of railway embankment can be expressed as a function of rainfall amount, namely the rainfall index. Therefore, it is judged that this rainfall index can be a good tool for rail-transport operation control. For the covering abstract see ITRD E122683.

Monograph Accession #:

00982661

Language:

English

Corporate Authors:

ENGINEERING TECHNICS PRESS

46 CLUNY GARDENS
EDINBURGH EH10 6BN United Kingdom

Authors:

Kim, H K
PARK, Y K
SHIN, M H

Pagination:

11 p.

Publication Date:

2002

ISBN:

0-947644-49-0

Features:

References (12)

Subject Areas:

Data and Information Technology; Geotechnology; Planning and Forecasting; Railroads

Source Agency:

Transport Research Laboratory

Crowthorne House, Nine Mile Ride
Wokingham, Berkshire RG40 3GA United Kingdom

Source Data:

IRRD E122713

Files:

ITRD

Last Modified:

Dec 2 2004 12:00AM