Presented byPowergen Technical Services Pvt. Ltd.

Consulting Engineers, Kolkata

EXPERTISE OF POWERGEN IN DESIGN & ENGINEERING OF STEEL BRIDGES

This presentation contains criticality in design of steel bridges & our ability to overcome the challenges & produce cost effective designs

Brief Overview of Powergen

Over the years Powergen has gained considerable expertise and experience in advisory, detail engineering, and project management for establishment of power plants, bridges and large industrial structures.

Powergen Technical Services Pvt. Ltd. (PTSPL) is a multi-disciplinary engineering consultancy and services organization

The mother company started as a power plant design and engineering house way back in 2000.

We have since diversified into Steel Bridges while maintaining pole position in design and engineering of power plants. We have following areas of operations: Steel Bridges Power Water & Waste Water Engineering Analytics

Brief Strength of Steel Bridges & Structures Dept. Full spectrum design team headed by Mr. Mark Sen

Six highly qualified engineers with five detailers Conversant in using FEM analysis tools like

• STAAD. Pro• Midas Civil • ANSYS

Design using latest Limit State method to IRC & BS-EN standard Reduction in overall tonnage resulting cost effective design Aesthetic bridge Capability of designing Continuous composite flyovers reducing no. of

piers resulting in :i. Main spans upto 75 m possible with side spans of 50 m on each

side.ii. Minimum expansion joints results in better riding qualityiii.Lesser foundation costiv.Quick erectionv. Faster completionvi.Overall saving in cost

Ongoing & Completed Bridge Projects : Design of 4 nos. X 87.6m span 20m wide 45.5° skew steel ROB over

DFCC track in Agra-Lucknow Expressway (ALEP) Project. (5 lanes of Class- A Loading) Powergen’s scope : Analysis of superstructure in space frame using FEM methods

STAAD.Pro & Midas Civil for global analysis Checking local details like bearing location, splice joint launching

induced stresses in ANSYS Detail design of steel superstructure catering “S “ Curve effect due to

high skew angle Design & engineering using IRC & MORTH standards Checking of design in BS Standard where IRC codes are wanting Preparation of design drawing (Total Tonnage 1300 MT) & Checking

of fabrication drawings Periodic shop visits to check correctness of fabrication work Preparation of preliminary launching scheme in consultation with

contractor

Midas Model

ALEP Skew Truss Bridge @ CH 67+600

STAAD Model

Checking of Bottom chord

without stiffener

Checking of Bottom chord

with stiffener

Local analysis of Bottom chord at the time of launching

Construction stage After completion

Bow String Bridge across river Bhogdoi @ Jorhat

Design & engineering of 60 m span Bow String Arch bridge over river Bhogdoi in Jorhat, Assam (loading class 2-70R+1 Class A & 3 Class-A). Completed in 2014. Total steel : 390 t.(approx.)

Powergen’s scope: Detail design of steel superstructure considering arch effect Design of sub-structure (including piles, caps etc.) Preparation of design drawings Preparation of detail launching scheme Checking of fabrication drawings Monitoring of fabrication & erection work

Ongoing & Completed Bridge Projects:

Design of 4 nos. X 45m span 27m wide 48° skew steel flyover with composite deck in Agra-Lucknow Expressway (ALEP) Project

Responsibility:

Detail design of steel superstructure catering “S “ Curve effect due to high skew angle

Preparation of design drawings Preparation of preliminary launching scheme

To be continued …….

Design of 2 nos . X 40m span 27m wide 23° skew steel major bridge with composite deck in Agra-Lucknow Expressway (ALEP) Project

Responsibility: Detail design of steel superstructure catering “S “ Curve

effect due to high skew angle Preparation of design drawings Preparation of preliminary launching scheme

To be continued …….

Design of 2 nos. X 132 m span 9.3m wide steel thru’ truss bridge over river Sutlej at Himachal Pradesh on NH 24

Responsibility: Detail design of steel superstructure Preparation of design drawings Checking of fabrication drawings Preparation of detail erection scheme Preparation of preliminary launching scheme

To be continued …….

Design of 136m (28-35-35-28) span 15m wide continuous composite plate girder flyover with concrete pier & steel cross head in Dehradun, Uttrakhand

Responsibility:

Detail design of steel superstructure with clear height constraints from FRL underneath

Preparation of design drawings

To be continued …….

Proof checking of 440m span suspension bridge upstream of Tehri Dam in Uttrakhand along with IIT-KGP

Responsibility: Proof checking of steel pylon design & stiffening truss design Providing data for aero-dynamic analysis in wind tunnel Incorporation of result of aero-dynamic analysis into static

analysis & re-analysis of structure in FEM

Design of 12 nos. FOB in Bihar over railway track with maximum span of 20m

Responsibility: Detail design of steel superstructure & foundation Preparation of design drawings

Other Projects in which we are involved: 50 mtrs. span Bow String Girder Bridge over railway at 74C for

ECR in Patna 50 mtrs. Steel arch at Rajendranagar, Bihar for ECR 50 mtrs. Steel arch at 72B, Bihar for ECR Consultancy service for 5.1 km. long Digha-Patna Ganga Bridge for BSC & CC JV

Munirka to IIT Delhi gate continuous composite viaduct, 1200 m long HTS plate

girder and RC composite deck. This is the first continuous composite viaduct

made to BS 5400 in India

To be continued …….

Murika to IIT gate Delhi Continuous composite via

duct Digha – Patna Ganga Bridge

Ongoing & Completed Industrial Projects : 5 MW coal based power plant in Nepal (First coal based power

plant in Nepal) • Design of TG deck (Dynamic analysis), TG house, CHP,

45m Steel Chimney & all civil and foundation designs.

12 MW coal based & Waste heat recovery based power plant in Jhadsuguda, Odisha• Design of TG deck (Dynamic analysis), TG house, CHP,

60m RCC Chimney & all civil and foundation designs.

5 MW Waste heat recovery based power plant in Ranchi, Jharkhand• Design of TG deck (Dynamic analysis),Steel TG house,

CHP, 45m Steel Chimney & all civil and foundation designs. To be continued …….

43 MW Coal & waste heat based power plant in Jamuria, Burdwan• Design of TG deck (Dynamic analysis), Steel TG house,

CHP, 90m RCC Chimney & all civil and foundation designs 28000 TPA Steel Melting shop & CCM at Jhadsuguda, Odisha

• 28m span 30m, 12.5m bay spacing with 180m length & 300 mT EOT crane capacity SMS shed.

Reduction of total steel tonnage from 500 t to 400 t by revising design of 200m long , 48 m span Stacker-Reclaimer shed for Cement clinker plant in Nepal

Technical Collaborator : For Bridges beyond our range, we are collaborating with UK

based M/s. Cass Hayward & LLP, one of the pioneer of BS 5400 codes has been providing specialist advice regularly to the Dept. of Transport, UK and Railways. For bridges of following types we would collaborate with Cass Hayward

Suspension bridge Cable stayed bridge Roll On/Off link spans for Ro-Ro berths. Movable bridges

RAILWAY BOW STRING ARCH BRIDGE OF 48m SPAN OF MANCHESTER METRO, UK (Designed by MKS, for W.S. ATKINS, UK)

This type of railway bridges are highly fatigued critical

DOCKLANDS LIGHT RAILWAY BRIDGE @ CANARY WHARF STATION LONDON (Designed by MKS, for Howard Humphrey, UK)

BLACKBURN SOUTHERN BYPASS BRIDGE AT THE JUNCTION M5 AND M65

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