GEO-TECHNICAL ENGINEERINGrdso.indianrailways.gov.in/works/uploads/File/Geo... Annual Report...
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www.rdso.indianrailways.gov.in www.rdso.indianrailways.gov.in Annual Report 2011-2012 GEO-TECHNICAL ENGINEERING RESEARCH, DESIGN & DEVELOPMENT Draft Guidelines on Various Aspects of Tunneling Projects Report on Reinforced Earth Wall with its Design Procedure and Cost Comparison for Road Over Bridge with Conventional Slopes/ Retaining Walls and Road Over Bridge with Reinforced Earth Walls n n n Study report to assess the availability of n sub-grade soil on various parts of India and its cost implication as per specifications Trial of Small Width Vibratory Roller for enumerated in "Guidelines and Compaction of Earthwork in Gauge Specifications for Design of Formation for Conversion Works Heavy Axle Load (No. RDSO/2007/GE: 0014)" n n Geotechnical Engineering Laboratory after trial have been collected and brought to GE Lab/RDSO for testing. ED/GE and other GE Directorate officials were present during the trial. Tunneling projects have always remained a challenge for engineers owing to the unpredictable behavior of the ground strata safety requiring detailed planning for design, construction, maintenance & safety. Keeping this in view following two draft guidelines were prepared & circulated to Zonal Railways for comments. A Study report titled as "Reinforced Earth Wall with its Design Procedure and Cost Comparison between Road over Bridge with Conventional Slopes/ Retaining Walls and Road Over Bridge with Reinforced Earth Walls" is published by G.E.Directorate. The report covers the concept of RE Wall Design with solved examples for different heights of ROBs. A detailed comparison of cost with actual field data has also been done. From cost comparison, it is concluded that : ROB with RE wall is always economical than ROB with Conventional retaining wall. Construction of ROB with RE wall is economical with respect to conventional (slope) ROB if the Guidelines for safety during tunnel construction land's cost is more than ` 2000/- per sq m. (December 2011) Guidelines for Design & Construction of Tunnels (March 2012) A field trial of Small Width Vibratory Roller developed by M/s Shiv Shakti Road Equipment Pvt Ltd, New Delhi The "Guidelines and Specifications for Design of was conducted from 22.03.12 to 30.03.12 between Formation for Heavy Axle Load (No. RDSO/2007/GE: Bareilly & Ram Nagar stations on Bareilly-Kasganj 0014)" was approved by Railway Board and circulated Section Gauge conversion project on Izzat nagar to Zonal Railways. On the basis of guidelines doubts Division of N.E.Railway. Small Width Vibratory Roller is were raised from the field units regarding availability of useful for compacting widened portion of embankments soil as per new specifications and its economic viability. in gauge conversion projects. Soil samples before & Therefore, a study was undertaken by GE Directorate based on above report. In this study, 88 soil samples from 22 projects were examined and it has been concluded that: Sub-grade soil is mostly available as per new guideline. In almost all the projects, it is cost effective than old guidelines since it reduces the thickness of blanket material. The Directorate is equipped with highly sophisticated laboratory capable of testing various soil parameters required for various works. View of Costruction of Tunnel Small Width Vibratory Roller 39
Transcript of GEO-TECHNICAL ENGINEERINGrdso.indianrailways.gov.in/works/uploads/File/Geo... Annual Report...
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Annual Report 2011-2012
GEO-TECHNICAL ENGINEERING
RESEARCH, DESIGN & DEVELOPMENT
Draft Guidelines on Various Aspects of Tunneling Projects
Report on Reinforced Earth Wall with its Design Procedure and Cost Comparison for Road Over Bridge with Conventional Slopes/ Retaining Walls and Road Over Bridge with Reinforced Earth Walls
n
n
n
Study report to assess the availability of n sub-grade soil on various parts of India and
its cost implication as per specifications Trial of Small Width Vibratory Roller for e n u m e r a t e d i n " G u i d e l i n e s a n d Compaction of Earthwork in Gauge Specifications for Design of Formation for Conversion Works Heavy Axle Load (No. RDSO/2007/GE:
0014)"
n
n
Geotechnical Engineering Laboratory
after trial have been collected and brought to GE Lab/RDSO for testing. ED/GE and other GE Directorate officials were present during the trial.
Tunneling projects have always remained a challenge for engineers owing to the unpredictable behavior of the ground strata safety requiring detailed planning for design, construction, maintenance & safety.
Keeping this in view following two draft guidelines were prepared & circulated to Zonal Railways for comments. A Study report titled as "Reinforced Earth Wall with its
Design Procedure and Cost Comparison between Road over Bridge with Conventional Slopes/ Retaining Walls and Road Over Bridge with Reinforced Earth Walls" is published by G.E.Directorate.
The report covers the concept of RE Wall Design with solved examples for different heights of ROBs. A detailed comparison of cost with actual field data has also been done.
From cost comparison, it is concluded that :
ROB with RE wall is always economical than ROB with Conventional retaining wall.
Construction of ROB with RE wall is economical with respect to conventional (slope) ROB if the
Guidelines for safety during tunnel construction land's cost is more than ̀ 2000/- per sq m. (December 2011)
Guidelines for Design & Construction of Tunnels (March 2012)
A field trial of Small Width Vibratory Roller developed by M/s Shiv Shakti Road Equipment Pvt Ltd, New Delhi
The "Guidelines and Specifications for Design of was conducted from 22.03.12 to 30.03.12 between Formation for Heavy Axle Load (No. RDSO/2007/GE: Bareilly & Ram Nagar stations on Bareilly-Kasganj 0014)" was approved by Railway Board and circulated Section Gauge conversion project on Izzat nagar to Zonal Railways. On the basis of guidelines doubts Division of N.E.Railway. Small Width Vibratory Roller is were raised from the field units regarding availability of useful for compacting widened portion of embankments soil as per new specifications and its economic viability. in gauge conversion projects. Soil samples before & Therefore, a study was undertaken by GE Directorate based on above report. In this study, 88 soil samples from 22 projects were examined and it has been concluded that:
Sub-grade soil is mostly available as per new guideline.
In almost all the projects, it is cost effective than old guidelines since it reduces the thickness of blanket material.
The Directorate is equipped with highly sophisticated laboratory capable of testing various soil parameters required for various works.
View of Costruction of Tunnel
Small Width Vibratory Roller
39
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Annual Report 2011-2012 GEO-TECHNICAL ENGINEERING
Modernization of GE laboratory has been done costing development in blanket design", "Stabilization of about ` 73 lakhs. Following state of art modern cutting slopes including case studies" & "Railway
alignment through poor sub soil including case equipment have been procured & commissioned studies" & "Development in Formation recently in addition to existing equipment:rehabilitation including case studies" in the Cyclic triaxial test apparatus.session No.12406, held at IRICEN, Pune from CBR apparatus11.4.12 to 12.04.2012 for Special Course on
Automatic compactor " R a i l w a y f o r m a t i o n & G e o t e c h n i c a l Direct shear computerised apparatus investigations" for officers of Zonal Railways.Electronic Static computerised triaxial apparatus.
pH meter apparatus
Hydraulic Sample ExtractorTotal of 19 courses have been conducted De- aired water apparatus for field technical officers and supervisors of Zonal Railways on “Formation Rehabilitation
Eleven consultancies were rendered to different Zonal & Quality Control” during 2011-12. Details
Railways suggesting the best possible remedial of trainees attended are given below. The measures for rehabilitation of weak formation during no. of FRQC courses conducted & trainees 2011-12. The list of consultancies has been given in participated has been highest during the Appendix-I.year.
FRQC Courses trained trained (Nos.)
Presentations were made by RDSO officials on (Nos.) (Nos.) (Nos.)
"Design of formation including bank profile slope 19 72 201 273stability analysis and provision of berms and
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n nTraining Of Officers and supervisors of Construction & Open-line organization At nRDSOn
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CONSULTANCY
MANPOWER TRAINING nDeliberation of Lectures At IRICEN, Pune Officers Supervisors Total
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