noh3 launching girder assembly and erection vsl
TRANSCRIPT
NOH3–LAUNCHING GANTRY PRESENTATION RAMP BRIDGES
NOH3 – 3D model Junction 7 NOH3 – Launching Gantry Assembly – 23rd January 2016
24th January 2016 NOH3 – RAMP BRIDGES – LAUNCHING GANTRY 2
TABLE OF CONTENT
INTRODUCTION
1. 1. WHAT IS A LAUNCHING GANTRY MADE OF ?
1.1 COMPOSITION 1.2 FUNCTIONS 2. LAUNCHING GANTRY’S STORY 2.1 BRIEF & DESIGN 2.2 REVIEWS/INTERFACE 2.3 FABRICATION 2.4 ASSEMBLY & ERECTION 2.5 MEOP & COMMISSIONING
INTRODUCTION
24th January 2016 NOH3 – RAMP BRIDGES – LAUNCHING GANTRY PRESENTATION 3
A Launching Gantry is: • Mechanized steel structure • Designed for the erection of precast concrete bridge
Reference photo – Launching Gantry – Ernest F. Lyons Bridge - USA
I. WHAT IS A LAUNCHING GANTRY MADE OF ?
24th January 2016 NOH3 – RAMP BRIDGES – LAUNCHING GANTRY PRESENTATION 4
1.1 COMPOSITION
The Launching Gantry is composed of 4 main elements: - Main Trusses (MT) (2 nos.) - Universal Lower Roller Support (ULRS) (4 nos.) - Lower Cross Beam (LCB) (2 nos.) - Propping system (Prop’s & Base Frame) (2 nos.)
MT
ULRS
LCB
General Arrangement of Launching Girder
Propping system
I. WHAT IS A LAUNCHING GANTRY MADE OF ?
24th January 2016 NOH3 – RAMP BRIDGES – LAUNCHING GANTRY PRESENTATION 5
1.2 FUNCTIONS - MT: Structural element that supports the
segments
- ULRS: Main support of the MT. It adjusts
the position of the MT
- LCB: Transfers the load from the ULRS to
the propping system
- Propping system: Transfers the load from
the LCB to the pier foundation
MT
ULRS
LCB
Propping System
2. LAUNCHING GANTRY’S STORY
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2.1 Brief & Design
2.2 Design & Interface
Review
2.3 Fabrication
2.4 Assembly & Erection
2.5 MEOP &
Commissioning (Major Equipment Operation Permit)
2. LAUNCHING GANTRY’S STORY
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2.1 BRIEF & DESIGN
Brief • Max. span weight = 900 Tons • Lmax = 46.32m • 6% cross-fall & 6% gradient • Perform Self Launching
Design • Main Truss (MT) • Universal Lower Roller Support (ULRS) • Lower Cross Beam (LCB) • Propping system
Construction Sequence – Mott MacDonald
INTERFACE REVIEW
2. LAUNCHING GANTRY’S STORY
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2.2 DESIGN & INTERFACE REVIEWS
Peer Review 3rd Party Check Interface
Yves Gauthier
EMCH Berger
Mott Macdonald VSL Middle East
Produced Document: Peer Report Review
Produced Document: ICE
Produced Documents: Technical Queries
DESIGN REVIEWS
2. LAUNCHING GANTRY’S STORY
24th January 2016 NOH3 – RAMP BRIDGES – LAUNCHING GANTRY PRESENTATION 9
2.4 FABRICATION
Steel Structures
Indiana Grating
Produced Documents: Mills Test certificates
Welding Tests Inspection reports
Equipments
Micco
Produced Documents: Mills Test certificates
Welding Tests Inspection reports
Welding Test – Indiana Grating
Local VSL supervision
Trial Assembly– Indiana Grating
Noses fabrication– Indiana Grating
2. LAUNCHING GANTRY’S STORY
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2.5 ASSEMBLY & ERECTION
What are the steps ?
1) Assembly of Propping Systems around the piers
2) Assembly of LCB & ULRS on top of the Propping Systems
3) Assembly of MT on the Ground
NOH3 - Propping System Assembly
Monitoring of the Assembly
• Checklists
• Stressing Reports
• Daily Visual Inspections
NOH3 – Stressing Report NOH3 – Splice connection
2. LAUNCHING GANTRY’S STORY
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2.5 ASSEMBLY & ERECTION
What are the steps ?
1) Tandem Lift: Erection of 1st Main Truss
2) Tandem Lift: Erection of 2nd Main Truss
3) Single Lift: Erection of Noses
KVMRT – Lifting of Launching Gantry - Malaysia
Monitoring of the Erection
• Erection Checklist
• Close Supervision
NOH3 – Erection checklist
2. LAUNCHING GANTRY’S STORY
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2.6 MEOP & COMMISSIONING
MEOP (Major Equipment Operation Permit): Internal Quality Procedure
It ensures: • The correct set-up of equipment and operating systems • The competence of management and operators • Implementation of best practices
What are the steps ?
1) Review of Personnel (CVs)
2) Review of Equipment
3) Review of MS & ITP
4) Review of Trainings
Conducted by ?
VSL Senior personnel from the operations, technical and quality/safety/environment teams
2. LAUNCHING GANTRY’S STORY
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2.6 MEOP & COMMISSIONING
Structure Testing: What are the steps ?
1) Loading of the LG
2) Measurement of the deflection
3) Close control/inspection of the whole structure
NOH3 – Load Test
Equipment Testing: What are the steps ?
1) Testing of all electrical items
2) Testing of all hydraulic items