6-Mechanically Stabilised Earth System

01-10-2014

APPLICATION OF GEOTECHNICAL ENGINEERINGGEOTECHNICAL ENGINEERING

CE451A Dr. Rajesh Sathiyamoorthy, IIT Kanpur

MECHANICALLY STABILISED EARTH SYSTEMS

Overview of Retaining Walls categories

Externally stabilized

Internally stabilized

In-situ walls (cut walls)

Gravity walls (fill walls)

Mechanically stabilized (fill wall)

In-situ Reinforced (cut wall)

The classification of retaining wall systems is based on the basic geotechnical mechanism used to resist lateral loads and the construction method used for the installation of the wall. The following are definitions used to classify retaining wall systems:

Externally Stabilized Structures: Externally stabilized structures rely on the integrity of wall elements (with or without braces, struts, walers and/or tiebacks or anchors) to both resist lateral loads and also prevent raveling or

tiebacks or anchors) to both resist lateral loads and also prevent raveling or erosion of the retained soil.

Internally Stabilized Structures: Internally stabilized structures rely on friction developed between closely‐spaced reinforcing elements and the backfill to resist lateral soil pressure. A separate, non‐structural element (facing, erosion control mat and/or vegetation) is attached to prevent raveling or erosion of the retained soil.

01-10-2014

Internally stabilized Externally stabilized

Soil particle at interface with back of structural facing

Based on how they are constructed◦ Cut Walls: Wall is constructed “top-down”.

Based on how they are constructed◦ Fill Walls: Wall is constructed “bottom - up”.

Classification of Retaining wall systems

01-10-2014

Cost comparison of RE walls

Classification of Reinforced Soil Retaining Walls

Face units are the structural support.

Reinforcement added to a “wall system” to increase achievable wall heights.

Reinforcement is the structural support.Face panels alone could not be a “wall system”.

Wall System Internally stabilized Wall System Internally stabilized Earth System

Components of Reinforced Soil Retaining Walls

Typical Highway supported by Reinforced soil wall

01-10-2014

Different types of wall configurations

Types of wall facing in Reinforced Soil Walls

Full height panel wall

Segmental panel wall

Modular block faced wall

Geotextile wrapped

ppretaining wall

Types of reinforcement in Reinforced Soil Walls

Geosynthetic Reinforcement• Geotextiles• Geogrids• Polymeric strips• Grids made of strips

Steel Reinforcement• Steel strips• Welded steel meshes• Steel strips with anchors• Twisted steel wire mesh

01-10-2014

Construction sequence of RE walls

01-10-2014

Different types of RE walls built in India

Failure of RE walls

01-10-2014

Failure of RE walls

Different types of RE walls built in India

01-10-2014

Failure of RE walls

01-10-2014

Failure of RE walls

01-10-2014

Failure of RE walls

6-Mechanically Stabilised Earth System

Documents

Non-Stabilised Rammed Earth Constructions

Evaluation of Mechanically Stabilized Earth Walls for

ReCon Mechanically Stabilized Earth Retaining Wall System Initial

Durability of Compressed Stabilised Earth Blocks

Updating Designs for Mechanically-Stabilized Earth Walls

MECHANICALLY STABILIZED EARTH SYSTEM · 2020-01-21 · Earth System (MSES) and Mechanically Stabilized Wall System (MSWS), as defined previously, and are constructed out of earthen

Mechanically Stabilized Earth Walls

INTRODUCTORY TRAINING PROGRAMME ON STABILIZED … · The first presentation in the series was about various earth techniques and their relevance. • stabilised earth construction

CHAPTE EARTH AND CONCRETE RETAINING WALLScnan/BOWLE/22477_12a.pdf · 1. Mechanically reinforced earth—also sometimes called a "gravity" wall 2. Gravity—either reinforced earth,

Compressed Stabilised Earth Block Manufacture in Sudan

Interlocking Stabilised Soil Blocks › sites › default › files › download...Interlocking Stabilised Soil Blocks Appropriate earth technologies in Uganda Appropriate technology

Design and Construction of Mechanically Stabilized Earth ... · highway projects involving MSE wall and reinforced soil structures. This Mechanically Stabilized Earth Walls (MSE)

MECHANICALLY STABILIZED EARTH RETAINING … · MSE Wall – Mechanically stabilized earth retaining wall, MSE Wall Vendor – Vendor supplying the chosen MSE wall system, MSE Panel

Shored Mechanically Stabilized Earth (SMSE) Wall Systems Design

Mechanically Stabilized Earth Wall for Bridge Support

Reconstruction with compressed interlocking stabilised ...reconstruction...interlocking+stabilised+earth+blocks+ GordonBrowne Good&Earth&Trust Southampton&SolentUniversity&& *+Extensive+use+of+concrete+blocks+

mechanically stabilized earth wall inspector's handbook

earthen architecture for sustainable habitat compressed stabilised earth block technology

EVALUATION OF STABILISED-EARTH (TEK) BLOCK FOR HOUSING

A Critical Analysis of Waterproofing - Good Earth Trustgoodearthtrust.or.tz/documents/JonathanChewDissertation.pdfFrom this it is evident that for a compressed (stabilised) earth block