Pekerjaan PDA Tes Pada Borepile by IRWANSYAH

Summary

This video provides a detailed overview of the Pile Driving Analyzer (PDA) test, a method used to assess the capacity and integrity of deep foundation piles. It explains the testing process, including the use of sensors and drop hammers to measure the pile’s response to impact. The data collected is analyzed using specialized software to estimate soil resistance and pile performance. The video also covers pile integrity classification, helping to determine if a pile is structurally sound or needs replacement. It’s an essential process for ensuring the safety and reliability of foundation systems in construction projects.

Takeaways

• 😀 PDA (Pile Driving Analyzer) is a digital method used to evaluate the integrity and bearing capacity of foundation piles through impact testing without damaging the piles.
• 😀 PDA testing uses sensors, including strain transducers and accelerometers, to measure the impact force and acceleration during pile testing.
• 😀 The impact test is conducted by raising a hammer (weighing between 15 to 20 tons) to a height of 1.5 to 2.5 meters and dropping it onto the pile.
• 😀 The sensors capture the data from the impact, which is then logged in real-time on a PDA or tablet connected to the system.
• 😀 The primary goal of PDA testing is to determine the pile's bearing capacity, integrity, and any potential settlement issues.
• 😀 Important parameters measured during testing include maximum force (FMX), maximum settlement (DMX), permanent settlement (DFN), and maximum energy transferred (MX).
• 😀 The test results are analyzed using software to estimate the distribution of resistance along the pile, dividing the forces into dynamic and static components.
• 😀 Based on the analysis, the pile's integrity is classified into four categories: Class 1 (no damage), Class 2 (minor damage), Class 3 (significant damage), and Class 4 (severe damage).
• 😀 The analysis provides essential data on pile bearing capacity (RMX) and ultimate resistance (RSU), which are used to assess if the pile meets the required specifications.
• 😀 The PDA test is conducted after the concrete reaches 28 days of curing, ensuring the pile has reached the required strength for testing.
• 😀 Proper alignment of the hammer and casing during the test is essential to prevent any damage to the pile, and the impact should not exceed 1-2% of the pile's ultimate capacity.

Q & A

What does PDA stand for in the context of foundation testing?

PDA stands for Pile Driving Analyzer, which is a method for testing the integrity and bearing capacity of foundation piles using digital data and impact testing.

What is the primary purpose of using a PDA in pile testing?

The primary purpose of using a PDA is to assess the pile's load-bearing capacity, evaluate its integrity, and determine any settlement or displacement of the pile during testing.

What are the key components involved in the PDA testing process?

The key components involved in PDA testing include a hammer (or drop hammer), sensors (transducers and accelerometers), a pile foundation, and a monitoring system to collect and analyze data.

How does the PDA testing process work?

The process involves placing sensors on the pile, lifting a hammer to a certain height, and then dropping it onto the pile. The sensors measure the force and velocity of the impact, and the data is recorded and analyzed to evaluate the pile's performance.

What is the significance of the sensor placement during the PDA test?

Sensor placement is crucial to accurately capture the impact data. The transducers and accelerometers are placed at specific distances from the pile head to ensure that the measurements are precise and the impact force is properly recorded.

What does the term 'ultimate capacity' refer to in the context of PDA testing?

The 'ultimate capacity' refers to the maximum load or force that a pile can safely withstand before failure. It is a key parameter determined during the PDA testing process.

What are the two methods used in PDA data analysis?

The two methods used in PDA data analysis are the Case method and the Web method. The Case method involves calculating the total resistance from both static and dynamic components, while the Web method separates the dynamic and static resistance.

How is the integrity of the pile evaluated during PDA testing?

The integrity of the pile is evaluated by examining the PDA data for any signs of damage or weakness, such as sudden drops in force or velocity that could indicate structural issues within the pile.

What does the classification of pile damage (BTA) mean in PDA testing?

The classification of pile damage (BTA) in PDA testing categorizes the pile's condition. Class 1 indicates no damage, Class 2 indicates minor damage, Class 3 signifies significant damage, and Class 4 means the pile must be replaced due to severe damage.

What is the significance of the RSU and RMS values in PDA testing results?

RSU (ultimate resistance) and RMS (bearing capacity) are key indicators of a pile's performance. RSU represents the ultimate load-bearing capacity, while RMS indicates the static bearing capacity. Both values help to determine the pile's overall strength and suitability for its intended use.