Metode Kerja Erection Girder Jembatan Prategang (Prestressed Girder) Bendungan Temef Nindya Karya

Summary

This video highlights the construction of the largest dam in Eastern Nusa Tenggara, Indonesia, which will serve a vast irrigation area. The dam's project involves complex tasks like the construction of a 35-meter-long pre-stressed concrete bridge using advanced ground shoring methods. The process includes various stages: preparation, assembly, erection, and finishing, ensuring safety and quality at each step. The project emphasizes safety protocols, precise planning, and effective use of equipment like cranes and scaffolding, ensuring smooth execution and high standards of work throughout the dam and bridge construction process.

Takeaways

• 😀 The Timor Tengah Selatan Dam is a national strategic project located in the South Central Timor district of East Nusa Tenggara, Indonesia.
• 😀 This dam is the largest in East Nusa Tenggara, with a storage capacity of 45 million cubic meters, providing irrigation to 4,500 hectares of land.
• 😀 A key component of the project is the prestressed concrete bridge, which spans 35 meters with a height of 23 meters from floor to abutment.
• 😀 The bridge construction involves the use of ground shoring as a support media for the erection process using a crane for lifting.
• 😀 Ground shoring ensures safe lifting by providing a sliding form that spans between abutments, aiding in the assembly of segmental box girders.
• 😀 The erection process of the girders follows a structured sequence: preparation, assembly, erection, and finishing.
• 😀 Preparation involves obtaining work permits, technical discussions, and safety assessments, including load capacity calculations and crane lifting tests.
• 😀 The ground shoring and scaffolding system ensures structural stability during the girder assembly and lifting processes.
• 😀 The assembly involves segmental box girder installation, with careful attention to alignment, securing girders with steel slings, and minimizing friction during lifting.
• 😀 Safety measures include using personal protective equipment (PPE), restricting access to the work area, and halting work in certain situations to prevent accidents during the erection process.
• 😀 The project is closely monitored by safety teams, the owner, and supervising consultants to ensure adherence to specifications and safe execution.

Q & A

What is the location of the TMF dam project?

The TMF dam project is located in the South Central Timor Regency, East Nusa Tenggara Province, Indonesia.

What is the capacity of the TMF dam?

The TMF dam has a storage capacity of 45 million cubic meters.

How much land will be irrigated by the TMF dam?

The TMF dam will irrigate 4,500 hectares of land.

What type of bridge is being constructed as part of the project?

A pre-stressed concrete bridge is being constructed as part of the project.

What is the span and height of the pre-stressed bridge?

The bridge has a span of 35 meters and a height of 23 meters from the floor to the abutment.

What is the method used for the erection of the bridge girder?

The erection of the bridge girder will use a ground shoring method, where a crane assists in lifting the girder, supported by a ground shoring system.

What is the purpose of the sliding form used in the project?

The sliding form acts as a sliding surface and a support during the process of connecting the segmental box girder.

What are the key stages of the girder erection process?

The key stages of the girder erection process include preparation, assembly, erection, and finishing.

What precautions are taken during the girder lifting and installation?

Precautions include ensuring no workers are near the lifting area, checking the stability of the crane, and using appropriate safety measures such as bracing and inspecting the strength of the lifting equipment.

How is the safety of the workers ensured during the erection process?

The safety of workers is ensured through the use of personal protective equipment (PPE), safety supervision by the owner and consultant, and proper planning for the work zone (Ring of Fire). The work is halted if any safety concerns arise.