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PSC SlabsRESEARCH, DESIGN & DEVELOPMENTnHeavy Axle Load Operation

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STANDARD DESIGNS OF STEEL BRIDGES PSC Girders

Plate Girder for 25t Loading

RCC Box Culverts

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Plate Girder for DFC Loading (32.5t Axle Load)

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Open Web Girder for DFC Loading (32.5t Axle nLoad)

STANDARD DESIGN OF COMPOSITE BRIDGES

Composite Girder for 25t Loading

STANDARD DESIGNS OF CONCRETE BRIDGES:

RCC Slabs

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STANDARD DESIGN OF COMPOSITE GIRDERS FOR ROBS

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Design & drawing of 3.05m, 3.66m, 4.57m, 6.1m and 9.15m pre-tensioned PSC slab for Guidelines issued to zonal railways for “25t loading – 2008”. instrumentation and associated with Zonal Railways Design & drawing of 9.15 m and 12.2 m post-for Instrumentation of Bridges to assess the actual tensioned PSC slab for “25t loading – 2008”. loadings on the bridges and to access the capacity of

bridges to carry Heavy Axle Loading. In this Design & drawing of 3.05m, 3.66m, 4.57m, connection, three consolidated reports for 6.1m and 9.15m pre-tensioned PSC slab for instrumentation were issued. “DFC loading (32.5t axle load)”.

Design & drawing of 18.3m Post-tensioned, 2-I PSC girder suitable upto seismic zone V for 25t Drawings of 12.2m, 18.3m & 24.4m steel plate laoding-2008.girder welded type for 10 million cycles issued.

Design and drawing of RCC double box culvert for various span height combinations and earthfill heights upto 10m for DFC loading (32.5t axle load) (189 combinations).

Design and drawing of RCC single box culvert for various span height and earthfill heights upto 10m for 25t loading-2008 for double track

0curved upto 4 (324 combinations).

Design and Drawing of segmental RCC single box culvert for limited height subway for 0, 0.5, 1.0m fill height for DFC loading (18 combinations).

Design of RCC single box culvert for segmental construction of 11 nos. of bridges which are not covered in the standard provisional drawings issued by RDSO for 25t loading-2008, as per

Drawings of 12.2m, 18.3m & 24.4m steel plate specific requirement of Western Railway.girder welded type for 10 million cycles issued.

Design of RCC box culvert for specific case 6mx3.6m with fill height 1.4m (including 350mm

Drawings of welded type open web girder for cushion) for double line track having center to 30.5m, 45.7m, 61.0m & 76.2m for 10 million cycles center distance 5.05m as requested by NC issued. Railway.

For 25t loading-2008 covering 324 combination of span/weight & earth fills.

Drawings of welded type open web girder for 30.5m, 45.7m , 61.0m & 76.2m for 10 million cycles for DFC loading issued.

Drawings of composite plate girder for 12.2m, 18.3m, 24.4m and 30.5m spans for 10 million cycles issued.

Design of modified concrete apron for specific requirement at Railway Sidings with ballastless Design and drawings of composite plate girder track. for 12.2m, 18.3m, 24.4m and 30.5m spans as per Design of 30.5m span composite girder deck NEW fatigue criteria issued (except for slab).slab for track upto 4° curve conforming to 25t loading 2008.

Design of 24.4m span composite girder deck Drawings of 18m, 24m, 30m & 36m span slab for track upto 4° curve conforming to 25t composite girders for ROBs have been issued loading 2008. including for skew spans upto 20°. The drawings are

for 6 different road width configurations.

BRIDGES & STRUCTURES

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Launching of Plate Girder 18.3 m

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Bridges & StructuresBridges & Structures

OTHER DESIGNS Updation of Codes, Manual & Specifications As Per Current Development/NeedsFoot Over Bridge DesignsBridge Rules (2008 incorporating correction slip nupto 39)

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Temporary Arrangement

Concrete Bridge Code (1999 Incorporating Correction Slip Upto 7)

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Washing Pit Linen

HEAVY AXLE LOAD OPERATION

Consultancy and Proof Checking Work Bridge Substructure and Foundation Code (1985 n Incorporating Correction Slip Upto 5)

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Manual on the Design and Construction of Well n and Pile Foundations (1985)

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Steel Bridge Code (1977 Incorporating Correction Slip Upto 10)

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nScrutiny of Design Basis Reports (DBR) of Viaducts of Metros

Indian Railway Bridge Manual (1998):

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Design Basis Reports Under examination Consultancy / Proof Checking Works

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Design and drawings of 3m & 6m wide FOB for 3 track spacing

A&C Slip No. 42 regarding determining the Design and drawings of 6m wide FOB for 4 track seismic forces has been issued 17-08-2009.spacingA&C Slip No. 43: Review of clause no. 2.8.4 Design and drawings of 6m wide FOB for 2 track regarding multiplication for factor for spacinglongitudinal force has been issued on 15-5-2013.

Restricted headway girders 14.4 m, 20.4m and 26.8m length, temporary CC crib piers for various heights and temporary abutment drawings have been

A&C Slip No. 12 has been issued on issued which are suitable for 25t loading and for higher 02.06.2009 based on recommendations of speeds.BTDG and Extra-ordinary BSC.

A&C Slip No. 13 revising load factors and Revision of structural design of washing pit line specifying coefficient of friction in calculation of based on CAMTECH required was taken up and pre stressing loss due to friction has been issued for use of zonal railways.i s s u e d o n 2 5 . 11 . 2 0 1 0 b a s e d o n

threcommendations of BTDG and 79 BSC.

Checking of Design Document of Sone Bridge no. 531 of E.C. Railway for MBG loading from A&C Slip No. 28 has been issued on procedural point of view as per revised 26.11.2008 regarding surcharge load for 25t parameters decided by TAG. loading-2008 and DFC loading. Scrutiny of Design Basis Report of Jaipur Metro A&C Slip No. 29 regarding modification of Rail Corporation. formulae for total horizontal force has been Scrutiny of Design Basis Report of Bangalore issued on 28.07.2009. Metro Rail Corporation.

Scrutiny of Design Basis Report of Chennai Metro Rail Corporation. A&C Slip No. 2 regarding allowable bearing Scrutiny of Design Basis Report of Mumbai pressure for well foundation has been issued on Metro Rail Corporation. 09.03.2010.

A&C Slip No. 3 regarding provision of minimum Guidelines issued to zonal railways for reinforcement in plain cement concrete well

instrumentation and associated with Zonal Railways foundation has been issued on 11-04-2013.for Instrumentation of Bridges to assess the actual loadings on the bridges and to access the capacity of bridges to carry Heavy Axle Loading. In this A & C Slip No 17: Regarding seismic zone map connection, three consolidated reports for of India, issued on 15.01.2003.instrumentation were issued.

A&C Slip No. 18: Regarding Revision of fatigue provisions has been issued on 14-05-2013.

Design Basis Reports Scrutinized and sent to A&C Slip No. 24 regarding scrutiny of bridge Railway Board in 2013-14register after abolition of THOD system has

Chennai Metro been issued on 14.09.11.Bangalore Metro A&C Slip No. 25: added new sub para 3 to Mumbai Metro One existing para 311 regarding span has been Jaipur Metro issued on 17-12-2012.

Kochi Metro B&S Dte is actively associated in providing consultancy to PSUs/Private rolling stock Ahmedabad Metromanufacturers/Zonal Railways (for speed certification of their new rolling stocks).

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Inspection and Testing

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Testing in Field Done Recently

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Review of design basis note of Cauvery Bridge on South Western Railway.

Fatigue life estimation of steel girder of Bridge No. 586 on East Coast Railway was done and a residual fatigue life of 74 years was estimated based on results of instrumentation. Thus, the steel girders of this bridge can be retained for. Report BS 107 was issued in this regard.

Proof checking of underslung open web girder design of 30.5m span 25t loading for N.W. Railway.

Consultancy was provided for new Bridge No. 152 on Jaipur Bandikui Section for removal of speed restriction of 30 kmph imposed by CRS.

Consultancy was also rendered to Northern Railway for long life painting system on Chenab Bridge in Udhampur Srinagar Project.

B&S Directorate is having a well furnished laboratory with following facilities.

Impact load and static load testing facility for full scale newly developed FRP/Composite sleeper are being done as required by nodal Directorate.

In recent past following testing and inspection works were carried out.

NDT testing of Road Over Bridge (ROB), Ring Road near Manak Nagar Railway Station and cube testing in B&S/Lab Lucknow.

Before Falling of Wheel

After Falling of Wheel

Arrangement for Static Load Test

Rebound Hammer in Use

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Condition Assessment of Bridges Using Vibration Signature Analysis

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Development of Guidelines for Seismic Design of Railway Bridges

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RESEARCH PROJECTS COMPLETED RECENTLY

Revision of Fatigue Design Provisions

RESEARCH PROJECTS IN PROGRESS

Continuous Scour Monitoring of Bridge Pier/ Abutment Foundation Using Time Domain Reflectometry etc.

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NDT testing of Bridge No.116 on Chambal river, codes. This work has been completed and the thJhansi Division, North Central Railway. outcome discussed in the 78 BSC. The implications

of the provisions have been worked out and the results were discussed in CBEs Seminar held in November,

th09. The item was again discussed in 79 BSC in March, 10 and approved finally. Correction Slip No. 18 has been incorporated in IRS Bridge Code after approval from Railway Board.

Mathematical models of two bridges have been created by which static analysis can be performed for self weight, dead loads, pre-stressing forces and live loads. The module can be used to compute natural frequencies and mode-shapes. Field measurements indicated that:

Displacement of bridge at a location cannot be obtained reliably by numerical integration of acceleration measured.

Measured frequencies cannot be used for updating model reliably due to large spatial variation and uncertainties in material properties.

Thus it has been concluded that the traditional vibration measurements and signature analysis techniques may result in significant errors when applied for condition assessment. The experimental work and analysis of field observations has led to the conclusion that it is not feasible to deploy this technology for condition monitoring of concrete bridges at present. Railway Board has approved closure of the project.

The provision of seismic design are very old and after the major earthquake of Bhuj, need was felt for re-looking the existing provisions of seismic design NDT testing of concrete sleeper supplied by for the design of new bridges considering the Director, QA/Civil by extracting cores.developments in BIS and other international B&S Directorate has vetted 146 speed standards. certificate and 15 different trail of various types

A project was taken up with IIT/Kanpur. The of rolling stock sent by nodal Directorate of project started in 2007-08 and followed up regularly. RDSO and a consultancy charge of ` 67.46 The final guidelines have been developed and have lakhs were earned for vetting speed certificates been circulated to all zonal railways. A training of firms other than zonal railways. programme for the field engineers was organized in May 2011 at IIT/Kanpur. The project has been completed. The Correction Slips to IRS Bridge Rule,

This project was taken up with IIT/Roorkee for IRS Concrete Code and IRBM are under approval.development of provisions to match the latest research in the field of assessment of fatigue life in advanced countries. The project was started in the 2003-04 and completed in 2007-08. The fatigue provisions of countries such as British Standards,

This project has been taken up with following European Standards American and Australian objectives:Standards were studied. It was found appropriate to

follow the procedure and approach as given in Euro Formulae for estimation of scour depth at

General View of Pier No. P-6 Bridge No. 116

Profometer in Use

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Bridge Pier for alluvial, sand, gravel and layered deliberation with PI. TDC: August, 2014beds.

Identification of suitable instruments for measurement of scour depth and monitoring real time scour in different bed conditions.

Effective and economical protective measures Presently there are no provisions for design of for scour at piers for different bed conditions. steel concrete composite Railway Bridges. Therefore

a project has been taken up to develop these Laboratory experiments were conducted and a provisions for normal speed and special provision for final Report on design formulae for scour around high speed passenger traffic. bridge piers based on lab and field observations has

been submitted by IIT/KGP in July’2013 which covers The MOU has been signed in March 2012 and 1 objective no 1. research assistant has been recruited.

In regard to field equipment, for measurement Literature survey has been completed and draft and monitoring of scour depth, PI advised that design basis report has been submitted by CRR which international experience suggests that some of the is under examination at RDSO. TDC: March 2015equipments like TDR, Magnetic sliding collar etc. have not performed well. Further advancement has also taken place in technology in the intervening period. Presently the instrumentation is being done with Identification of field equipments is still in process. PI wired sensors which is very cumbersome. The project advised that the name of some field equipments along has been taken up to developed wireless sensor with budgetary quotation will be given to the RDSO by network and also to identify critical parameters September 2013. This will cover objective no 2. required to be instrumented.

Technical report for identification of three The MOU has been signed in March 2012 and 2 protective measures to control the scour and carryout research personnel have been recruited by IIT/KGP. further lab experiments for validation has been

Literature survey has been completed. TDC: March submitted by IIT/KGP in July 2013. The field validation 2015of protective works can be carried out in the next

monsoon season only. TDC: November, 2014

Presently IRS Codes have provision for dynamic effect upto 160 kmph speed. Through this Presently there are no provisions for project criteria will be developed to assess dynamic determination of thermal stresses in concrete girders effect beyond 160 kmph. Payment of 24.48 lakhs is in IRS Codes. Therefore this project has been taken up made to IIT/Roorkee. Project is in progress. TDC : with Osmania University to develop temperature July 2014gradient across depth concrete box girders.

Equipments such as K type thermocouples (150 nos.), Data Logging System, Computer procured. Literature Survey Report submitted by the PI. Main objectives of the projects are:

The casting of three RCC Box girder specimens Modeling and instrumentation for (5m long) completed & Thermocouples installed. Data evaluation of longitudinal forcecollection by temperature measurements on the box Review of techniques such as STU etc. girder specimens has been done. for mitigation of longitudinal loads.

ANSYS software and anemometers has been Development of guidelines for design procured. FEM Model has been developed on ANSYS. provisions for estimation of longitudinal

Temperature measurements on unventilated loads on bridges. girders with ballast cushion depth of 300 mm and 400 Detailed proposal received from SERC Chennai mm are in progress. is under examination.

Survey of Bridges to select the Bridge for field TDC : 3 years after signing of MoU. validation was done in June 2011 jointly by officials of RDSO and representative of Principal Investigator of Project.

Main objectives of project are:An interim report regarding validation of ANSYS

Formulation of guidelines for assessment model has been submitted by the PI in Jun’13 along of load carrying capacity and retrofitting with the Meteorological data of ambient temperature of of masonry arch bridges.four places. The interim report is under active Evaluation of improvement in load

Project on development of provision for design of n steel concrete composite Railway Bridge for

normal speed and special provision for high speed passenger traffic

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Development of Railway Bridge Health Monitoring System with Wireless Sensor Network

Criteria for the Dynamic Analysis of Steel Railway BridgesStudy of Temperature Gradient in Concrete Box

Girder Bridges

Evaluation and Management of Longitudinal Force on Substructure of Railway Bridges.

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Assessment of Efficacy of Retro Fitment of Arch Bridges.

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carrying capacity of arch bridges using Composite girder of ROB 36 m span.various retrofitment techniques and Design of 9.15m PSC Slab (Post-tensioned) for validation thereof. 25t loading.

Detailed proposal received from SERC Chennai Design of Ballast retainers for severe is under examination. TDC: 4 years after signing of environment in PSC slabs of spans 3.05m, MoU. 3.66m, 4.57m & 9.15m for 25t loading.

RDSO has done inspection of 24051 MT of Design of welded type open web girder 61.0m Fabrication works of Steel Girders of different Zonal span for “DFC loading (32.5t axle load)”. Railways from April 2012 to March, 2013 and has

already exceeded the annual target of 18000 MT.Composite girder of ROB 30 m span.

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WORKS IN PROGRESS Inspection of Fabrication of Steel GirdersDesign and Drawing

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Documents