KONSTRUKSI BASEMENT DENGAN SISTEM DINDING PENAHAN TANAH SECANT PILE - BACKPILE - STRUTTING BAJA

Summary

This video provides an in-depth overview of a construction project involving basement excavation, focusing on soil retention systems like second-file retaining walls. The process includes site clearing, foundation work, and installation of bor piles and bentonite piles. Special attention is given to structural reinforcements such as tiebacks and beams, as well as monitoring lateral deflections during excavation. The video highlights the importance of controlling deflections and ensuring the stability of the retaining walls throughout the excavation phases. It emphasizes the use of software analysis and monitoring tools to maintain structural integrity and safety.

Takeaways

• 😀 The script discusses a construction project involving basement excavation and the use of a second pile retaining wall system.
• 😀 The project uses bored piles (borpile) and bentonite piles as part of the retaining wall system for soil stabilization.
• 😀 Prior to excavation, land clearing, measurement, and foundation work are essential steps for the construction process.
• 😀 The second pile retaining wall system utilizes bored piles with a diameter of 1 meter and bentonite piles with a diameter of 60 cm.
• 😀 The retaining wall structure is reinforced with tie beams (taubeck) connecting the piles to the back structure.
• 😀 The script explains the process of preparing and cleaning the pile heads before construction progresses, ensuring they are in good condition.
• 😀 The installation of tie beams and their role in connecting the retaining wall to other structural elements is shown in the visual aids.
• 😀 Concrete pouring for the tie beams forms a cohesive part of the second pile and backup system.
• 😀 After the tie beams cure, excavation for the basement can begin in stages, with the retaining wall structure supporting the excavation process.
• 😀 The use of lateral support (strut beams) is highlighted for maintaining the structural integrity of the retaining wall as excavation continues.
• 😀 Monitoring systems are in place to track lateral deflections during excavation, ensuring the retaining wall does not experience dangerous stress.

Q & A

What is the main construction technique discussed in the video?

The video primarily discusses the use of secant pile walls and soil retention methods for basement excavation in construction projects.

What is the purpose of the secant pile wall in this construction method?

The secant pile wall serves as a soil retaining barrier, preventing soil movement and supporting the basement excavation, especially in challenging soil conditions.

What is the role of bentonite in the construction process?

Bentonite is used as a slurry material to support the drilling of secant piles, providing stability and preventing soil collapse during the installation of the piles.

How is the system of second pile and backup pile connected?

The second pile (DPT) and backup piles are connected by a beam structure called 'taubeck,' which helps in transferring loads and maintaining the stability of the retaining wall system.

What is the function of the taubeck beam in the construction process?

The taubeck beam connects the retaining wall (second pile) to the other structural elements behind it, ensuring lateral stability and load transfer.

What is the significance of the 'backup pile' or 'B pile' in the construction of the retaining wall?

The backup pile (B pile) strengthens the secant pile wall system by providing additional support and preventing lateral movement of the retaining wall during the excavation.

Why is the head of the secant piles leveled and treated during construction?

The head of the secant piles is leveled and treated to ensure uniformity and stability before installing the connecting beams and proceeding with further structural work.

How does the excavation process progress in stages?

The excavation progresses in stages, with careful monitoring of the lateral deflection of the retaining wall. Each stage is analyzed for its impact on the stability of the system and adjusted accordingly.

What role does the monitoring system play in the construction process?

The monitoring system tracks the lateral deflection of the retaining wall at each stage of excavation, helping to ensure that the deflection remains within safe limits and does not compromise the wall's integrity.

How is the deflection of the retaining wall controlled during the excavation process?

The deflection of the retaining wall is controlled by using monitoring instruments that track the movement during excavation. If the deflection exceeds safety limits, corrective actions are taken to prevent damage to the wall.