Rail Infrastructure Resilience Starts with A Geogrid-Stabilized Track

by Mitesh Singhal Singhal Industries Private Limited

Geosynthetics are widely known and utilized by the Railways for different applications, like Ground Improvements, Base stabilization for high barriers over soft soil, track bed stabilization, track drainage, vertical slope stabilization, deterioration control, etc.

The usage of geosynthetics results in considerable savings and improved performance on both short-term and long-term basis.

Design Engineer

Speed corridors are also being planned which will entail hefty axle cargoes and will mandate railway tracks with durable tracks which increases the need for new technology which supports to give the best quality railway tracks with optimized layout and improve the speed of construction, and the usage of good quality geosynthetic materials for the construction of new tracks.

Here in this article, we will concentrate on Track bed stabilization utilizing PP Biaxial Geogrid

Difficulties confronted during Railway Track Construction

In Railways, the Train wheel freight is constantly in the same position, and each train when departing yields fast rotations of loading and unloading (i.e. Pressure and De-pressure), which results in fast degradation of the railway layout due to deformations.

Site Condition – After visiting the site, it was observed that the Track bed was in a distressed situation, there was water leakage in some areas on the track bed resulting in a moist situation. Track bed settlement was also commemorated at numerous locations.

Solution – After a detailed evaluation of the project requirements and site requirements, the given solution is that the existing ballast should be extracted and redone using PP Biaxial Geogrid and

Nonwoven Geotextile. The indulged division is as follows.

Placing a geotextile on the interface of the sub-ballast and the sub-base.

The geotextile provides a tensioned member consequence and will perform as a divider to detach the mixing of the considerable base particles with the sub-base. This will also give adequate load allocation. The pumping of damage from subgrade to sub-base

is lessened.

Positioning a layer of Geogrid PP within the sub-ballast above the geotextile.

The ballast coating for instance is subjected to recounted dynamic and cyclic loadings, as well as eloquent temperature.

Geogrid PP acts as a working platform underlying vulnerable soil by subsidizing a load of structure equipment, staving off excessive deformation of subgrade, and facilitating proper squeezing of granular coating /sub-ballast.

Geogrid PP enhances the execution of ballast and for up-ballast/blanket coatings of the railway track bed. The loading-unloading cycle yields a pump-up of the fines from the subgrade into the ballast, which quickly loses its frictional properties:

lateral and longitudinal deformations of the tracks then happen and the average speed of all the railway lines gets decreased. Since mining has got prohibited in a no. of parts of the nation due to environmental problems, it became very tough to

mandate aggregates & sand both in terms of size and quantity for ub-base construction.

Also due to increased need and less supply, the prices of these materials are quite increased, giving a major effect on the total cost of the project.

The comparative movement of ballast particles under-speed velocity axle loading is the main motive for ballast degradation.

Therefore, Track supervision is very crucial for

the functionality and protection of track and railway functions. To decrease ballast degradation and avoid track bed settlement, it is a must to strengthen the required Layer thickness and sideways movement must be deprived.

Solution

To decrease ballast degradation and avoid track bed

the settlement, Polypropylene Biaxial Geogrid (Geogrid PP) is an excellent solution. The inclusion of PP Biaxial geogrid within a coating of granular material affects the strong interchange, primarily through the interlocking of particles within the PP biaxial geogrid notches, which finally leads to an immensely enhanced structural capacity, Geogrid PP function as a divider and preserves the designated consistency and integrity of granular coatings placed over weak soil. Geogrid PP act as a working platform underlying soft soil by backing a load of construction equipment, preventing excessive deformation of subgrade, and stimulating reasonable compacting of granular layer /sub-ballast.

Geogrid PP enhances the enactment of ballast and sub-ballast /blanket layers of railway track beds. Geogrid PP allows faster structure, improves performance, and provides long service life resulting in conserving immediate and life cycle costs as well as boosting sustainability.

About Singhal Industries

Singhal Industries Ltd was founded in 1987 to provide world-class geosynthetic products and services to serve the needs of infrastructure development in India. From a modest beginning with the setting up of a manufacturing facility for woven geotextiles in Gujarat, we have rapidly grown to become the largest manufacturer of geosynthetics in India.

Today we manufacture a broad range of products. Strict supervision of raw materials and manufacturing procedures provide a high-quality product with compatible geometry, integral intersections, Superior mechanical properties, and outstanding durability as per the needs of the Standards.