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modelling using midas (metro structures)
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midas Civil Applications for Metro Projects METRO DESIGN & PRACTICE
1
Bridging Your Innovations to Realities
2
Metro Webinar Series Contents
Introduction to MIDAS
Mass Transportation Systems
Metro Transportation Systems
Balanced Cantilever Method
Integral Bridge
Rail Structure Interaction
Tunneling
Project Applications
Upcoming Webinars
Summary
Bridging Your Innovations to Realities
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Engineering
Consultancy
Bridge & Civil Structures
Building/Plants Structures
Geotechnical Analysis
Mechanical Analysis
Bridges
Buildings
Geotechnical
Mechanical
Software
Development
MIDAS About MIDAS IT
Bridging Your Innovations to Realities
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MIDAS Introduction Total Engineering Solutions
Integrated Design System
for Building and General Structures
midas Gen
midas Design+
Building Eng.
2D / 3D Geotechnical and Tunnel analysis System midas GTS NX
Soil Works
Geotechnical Eng.
midas Civil
midas FEA
Bridge Eng.
Integrated Solution System
for Bridge and Civil Structures
Advanced Nonlinear and Detail Analysis System
MIDAS Information Technology Co., Ltd. 6
Integrated Solution System for Bridge and Civil Engineering midas Civil
6
A Companies MIDAS Provides the best solutions in
Structural, Geotechnical, and Mechanical Engineering
ACKG Halcrow MWH Global
AECOM HDR Nikken Sekkei Group
ARCADIS HNTB Pacific Consultants
ARUP Hyder Parsons
Atkins Hyundai Engineering Parsons Brinckerhoff
Beca Group INGEROP PBS&J
Bechtel Italferr SpA Ramboll Gruppen
Black & Veatch Jacobs RMJM
CH2M HILL JGC Corp. Royal Haskoning
China Railway Construction
Corp. Kajima Corp. Scott Wilson
COWI Korea Power Engineering Shanghai Xian Dai
Design
CTCI Corp. Langan Sinopec Engineering
CTI Engineering Louis Berger Group SMEC
Dar Al-Handasah Consultants Michael Baker Corp. SNC-Lavalin International
DHV Group MMM Group URS
GHD Mott MacDonald WSP Group
Golder Associates Mouchel Yachiyo Engineering
Key Clients of MIDAS Software Solutions MIDAS Provides the best solutions in Structural, Geotechnical, and Mechanical Engineering
AECOM
AFCONS
Jacobs-CES
COWI
CH2M HILL
FEEDBACK VENTURE
Gammon
L&T LTD
L&T ECC
L&T Rambol
Louis Berger
Mott Mac
RITES
RDSO
SN Bhohe
STUP
Tandon Consultants
Distributed India Leaders A partial list of International Users
Bridging Your Innovations to Realities
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Mass Transportation System Why do we need Mass Transportation System?
Why Mass Transport Systems?
1. Growth of population Increased Traffic
2. Inadequate Public Transport Poor traffic Management and inadequate Public Transport
3. Increasing Personalized Transport
Basic Inability of Public Transport to meet needs
Increasing Incomes, vehicle ownership
4. Effects Reduced Access, Congestion, Pollution
Bridging Your Innovations to Realities
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Solutions
1. Metros
2. Monorail
3. Tram
4. Bus Rapid Transit System (BRTS)
5. Local Railway Transportation (LRTS)
Mass Transportation System Types of Mass Transportation Systems
Bridging Your Innovations to Realities
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Metro Why do we need Metros ?
1. Fuel Economy Requires 1/5th energy per passenger per km compared to road-based system.
2. Reduced Road Stress Lesser Road Traffic and Lesser Accidents
No road space, if underground and only about 2 meters width of the road, if elevated
capacity system.
3. Pollution Free Zero Emission
4. Increased Mobility Easy and better accessibility to facilities in the influence and remote areas
Increased opportunities in the economic and business sectors
Metro Advantages
Bridging Your Innovations to Realities
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Metro Difficulties faced in Metro Construction
1. Difficult to construct Bridges or Tunnels in locations with dense population.
2. Noise and duration of construction may stall the traffic more during the period of construction.
3. Metros/ Monorails use Continuous Welded Rails, which have their own advantages and disadvantages
Challenges for Metro Rail Design Engineers
Bridging Your Innovations to Realities
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Metro Construction Solutions
1. Segmental Bridge Construction (midas Civil) Balanced Cantilever Method of Construction
Cast-in-Situ Segments
Precast Segments
Integral Bridge Method of Construction (monorail)
2. Rail Structure Interaction (midas Civil) Continuous Welded Rails
3. Tunneling (midas GTS) Tunnel Boring Machine used to excavate tunnels with a circular cross section through a variety of soil and rock strata.
They can bore through anything from hard rock to sand.
Solutions Construction Procedures
Bridging Your Innovations to Realities
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Metro Balanced Cantilever Method
Balanced Cantilever Method
1. Balanced cantilever construction implies construction of cantilever segments from a pier in a balanced fashion on each side until the mid span is reached and a closure known as stitch segment is made with other half span cantilever constructed from the preceding pier.
2. The procedure is as follows:
The form work is suspended from the end of the last segment.
The new segment is cast and once the concrete has developed a predetermined strength, the section is post tensioned to the rest of the bridge.
The same erection process is repeated till the structure is completed.
Bridging Your Innovations to Realities
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Metro Balanced Cantilever Method
Balanced Cantilever Method
Stitch Segment
End Span PSC Segments
Bridging Your Innovations to Realities
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Metro Balanced Cantilever Method
Advantages
1. Less Space Required
Construction in urban area where temporary shoring would disrupt traffic services below.
2. Less Formwork Required
3. Larger Spans
Useful where span length is more but launching of girder is not possible.
4. More efficient, safe and economical
Easy adoptability to curvature and super elevation.
Useful for odd sizes, single span etc.
Bridging Your Innovations to Realities
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Metro Balanced Cantilever Method
Construction over a working flyover
Bridging Your Innovations to Realities
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Metro Balanced Cantilever Method
Construction over Railway lines
Bridging Your Innovations to Realities
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Metro Balanced Cantilever Method
Suitable for Longer Spans
Bridging Your Innovations to Realities
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Metro Balanced Cantilever Method
Considerations for a Bridge Engineer
1. Camber Due to cantilever action there will be some deformations, due to which, some construction defects may arise, specially when installing the stitch segment
2. Prestress Losses
3. Creep and Shrinkage Effect
4. Proper Construction Sequences
Bridging Your Innovations to Realities
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Metro Balanced Cantilever Method in midas Civil
Bridge Wizard
Bridge Layout
Section Definition
Tendon Arrangement
Automatic generation
of Construction Stages
Prestress Losses
Camber Calculations
Bridge Layout Tapered Sections Tendons
Specialization
Bridging Your Innovations to Realities
One Stop Solution for
Segmental Bridge
Tendon Prestess Loss
FCM Camber
Specialization
Construction
Stage Analysis
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Metro Construction Stage Analysis
Bridging Your Innovations to Realities
One Stop Solution for
Segmental Bridge
Tendon Prestess Loss
FCM Camber
Specialization
Construction
Stage Analysis
24
Metro Construction Stage Analysis
FCM Camber
Bridging Your Innovations to Realities
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Metro Rail Structure Interaction
Definition of Continuous Welded Rail (CWR) Rails are continuously welded and thus, the length of one rail is longer than 200m. ex > standard length rail (L=25m), longer rail (L=25~200m)
Necessity of Continuous Welded Rail
1. Reduced Impact Force in the rails increases the life span of the rails and improves the ride quality.
2. Decreasing noise and vibration by the reduced impact force is less impeding the ambient environment.
Continuous Welded Rails - Advantages