Hanoi – Hochiminh city railway line Do Vang Bridge’s construction bridges safety improvement project technology of beam casted on scaffolding

CONTENTS

CHAPTER I: GENERAL

I: General description

II: Natural conditions of bridge construction area

III: Scope and applicable specification

CHAPTER II: TECHNOLOGY PROCESS

I: Construction sequences

II: Technology steps

1. Production and erection of scaffolding

2. Testing temporary pier and scaffolding

3. Install beam formwork

4. Beam bearing installation

5. Installation of reinforcement, duct and high strength cable

6. Placing concrete for beam

• Concrete mix design

• Concrete materials

• Construction plan layout

• Construction Equipment

• Arrangement manpower

• Concrete mixing

• Provide concrete

• Method for decrease concrete mix temperature

• Pour concrete

Hanoi – Hochiminh city railway line Do Vang Bridge’s construction bridges safety improvement project technology of beam casted on scaffolding

• Tamping

• Curing

• Emegency occurrences that may happen and resolving method

7. Prestressed cable tension

• Preparation work

• Stressing equipment.

• Prestressed cable tension

8. Grouting the duct

9. Moval of scaffoldings, formworks

CHAPTER III: MATERIAL REGULATIONS

I: General

II: Materials

1. Reinforcement

2. Prestressed anchor

3. Duct

4. Concrete

5. Pumped grout

CHAPTER IV: LABOUR SAFETY

I: Labour safety when frecting and removing scaffolding

II: Labour safety while casting concrete

III: Labour safety while dragging prestress

APPENDIX