The Results of Carrying Capacity Analysis

Oct 13, 2025 by wbrum.org 124 views

Analysis of Carrying Capacity and Decrease in the 600 mm Diameter Bored Pile Foundation in the Medan Focal Point Project: Comparison of Empirical Methods, Static Load Tests, and Elements Up to

Introduction

The foundation is a vital structure in building construction, as it acts as a support for the burden of the building and transfers it to the ground. The ability of the foundation to carry the load is called the carrying capacity, while the decline is a vertical movement due to load. Determining the carrying capacity and decrease in foundation can be done through various methods, such as empirical methods, modeling elements to, and static load tests (loading tests). This study analyzed the carrying capacity and decrease of the 600 mm diameter bored pile foundation on the Focal Point Medan project, both for a single pole and a pole group.

Background

The Focal Point Medan project is a significant construction project that requires a reliable and safe foundation system. The bored pile foundation is a common type of foundation used in this project, and it is essential to determine its carrying capacity and decrease to ensure the stability and safety of the building. The carrying capacity of the foundation is a critical factor in determining the load that can be transferred to the ground, while the decrease is a measure of the vertical movement of the foundation due to load.

Methodology

This study analyzed the carrying capacity and decrease of the 600 mm diameter bored pile foundation using three methods: Empirical Method, All Pile Program, Plaxis Program, and SAP2000 Program. The results were then compared with the interpretation of the static load test carried out in the field. The analysis utilized data on field and laboratory investigations, as well as the Mohr Coulomb soil model to predict foundation behavior.

Results

The Results of Carrying Capacity Analysis

Analysis of Ultimate Carrying Capacity Bored Pile Foundation with an empirical method shows the results that vary depending on the method used. The Reese and Wright method with N-SPT data gives the highest value of 697.83 tons, while the Touma and Reese method gives the lowest value of 387.67 tons. For lateral ultimate carrying capacity, the value obtained is 26.60 tons, while the permissible lateral carrying capacity is 13.30 tons. The SAP2000 program produces 25.20 tons of lateral ultimate.

The results of the loading test (loading test) showed an ultimate carrying capacity of 300.00 tons. Based on these results, it can be concluded that the carrying capacity of the foundation is safe.

Declining Analysis Results

Analysis of the decline with the plaxis program gives a result of 5,462 mm, while the All Pile program produces 9.99 mm. The static load test in the field shows the biggest decline in the heaviest load is 5,443 mm. Based on ASTM D1143/81 standards, the permitted decline is 25.40 mm. Thus, the bored pile foundation can be said to be safe in construction.

Further Comparison and Analysis

The difference in results obtained from various methods shows that the importance of choosing the right and accurate method in analyzing the carrying capacity and decrease in foundation. The empirical method provides a fast initial estimate, but the results can vary depending on the method used. The All Pile and Plaxis programs provide more detailed and accurate results because they consider the condition of the soil and the foundation geometry in detail. Static load test is the most accurate method, but more expensive and requires longer time.

Conclusion

Analysis of the carrying capacity and decrease in the bored pile foundation in the Medan Focal Point project shows that the foundation is safe for construction. The results obtained from various analytical methods show that the choice of appropriate methods is very important in ensuring the reliability of the foundation. It is essential to consider factors such as soil conditions, foundation geometry, and burden to be borne by the foundation in determining the right analysis method.

Recommendation

Further analysis needs to be carried out by including other factors that can affect the carrying capacity and decrease in foundation, such as the effect of earthquakes and changes in soil conditions.
It is essential to always prioritize the static load test (loading test) as a final verification method before the foundation construction begins.
The results of this study can be used as a reference in planning and implementing the construction of the bored pile foundation in the regions with similar soil conditions.

Limitations

This study has some limitations that need to be addressed in future research. The analysis was limited to the 600 mm diameter bored pile foundation, and further research is needed to investigate the carrying capacity and decrease of other types of foundations. Additionally, the study only considered the static load test as a final verification method, and further research is needed to investigate the use of other methods, such as dynamic load tests.

Future Research Directions

Future research directions include:

Investigating the effect of earthquakes on the carrying capacity and decrease of bored pile foundations
Developing new methods for analyzing the carrying capacity and decrease of bored pile foundations
Investigating the use of other types of foundations, such as driven piles and caissons
Developing new standards and guidelines for the design and construction of bored pile foundations

Conclusion

In conclusion, this study analyzed the carrying capacity and decrease of the 600 mm diameter bored pile foundation in the Medan Focal Point project using three methods: Empirical Method, All Pile Program, Plaxis Program, and SAP2000 Program. The results were then compared with the interpretation of the static load test carried out in the field. The analysis utilized data on field and laboratory investigations, as well as the Mohr Coulomb soil model to predict foundation behavior. The results show that the foundation is safe for construction, and the choice of appropriate methods is very important in ensuring the reliability of the foundation.
Frequently Asked Questions (FAQs) about Carrying Capacity and Decrease in Bored Pile Foundations

Q: What is the carrying capacity of a bored pile foundation?

A: The carrying capacity of a bored pile foundation is the maximum load that it can withstand without failing. It is a critical factor in determining the load that can be transferred to the ground.

Q: What is the decrease in a bored pile foundation?

A: The decrease in a bored pile foundation is a measure of the vertical movement of the foundation due to load. It is an important factor in determining the stability and safety of the building.

Q: What are the common methods used to analyze the carrying capacity and decrease of bored pile foundations?

A: The common methods used to analyze the carrying capacity and decrease of bored pile foundations include empirical methods, modeling elements to, and static load tests (loading tests).

Q: What is the importance of choosing the right method in analyzing the carrying capacity and decrease of bored pile foundations?

A: The choice of method is very important in ensuring the reliability of the foundation. The empirical method provides a fast initial estimate, but the results can vary depending on the method used. The All Pile and Plaxis programs provide more detailed and accurate results because they consider the condition of the soil and the foundation geometry in detail. Static load test is the most accurate method, but more expensive and requires longer time.

Q: What are the limitations of this study?

A: This study has some limitations that need to be addressed in future research. The analysis was limited to the 600 mm diameter bored pile foundation, and further research is needed to investigate the carrying capacity and decrease of other types of foundations. Additionally, the study only considered the static load test as a final verification method, and further research is needed to investigate the use of other methods, such as dynamic load tests.

Q: What are the future research directions?

A: Future research directions include:

Investigating the effect of earthquakes on the carrying capacity and decrease of bored pile foundations
Developing new methods for analyzing the carrying capacity and decrease of bored pile foundations
Investigating the use of other types of foundations, such as driven piles and caissons
Developing new standards and guidelines for the design and construction of bored pile foundations

Q: What are the recommendations for the construction of bored pile foundations?

A: The recommendations for the construction of bored pile foundations include:

Prioritizing the static load test (loading test) as a final verification method before the foundation construction begins
Considering factors such as soil conditions, foundation geometry, and burden to be borne by the foundation in determining the right analysis method
Using accurate and reliable methods for analyzing the carrying capacity and decrease of bored pile foundations

Q: What are the implications of this study for the construction industry?

A: The implications of this study for the construction industry are significant. The study highlights the importance of choosing the right method in analyzing the carrying capacity and decrease of bored pile foundations. It also emphasizes the need for accurate and reliable methods for analyzing the carrying capacity and decrease of bored pile foundations. The study provides valuable insights for engineers and contractors involved in the construction of bored pile foundations.

Q: What are the future applications of this study?

A: The future applications of this study include:

Developing new standards and guidelines for the design and construction of bored pile foundations
Investigating the use of other types of foundations, such as driven piles and caissons
Developing new methods for analyzing the carrying capacity and decrease of bored pile foundations
Investigating the effect of earthquakes on the carrying capacity and decrease of bored pile foundations

Q: What are the potential risks associated with the construction of bored pile foundations?

A: The potential risks associated with the construction of bored pile foundations include:

Failure of the foundation due to inadequate analysis or design
Damage to the surrounding soil or structures due to settlement or collapse of the foundation
Inadequate load transfer to the ground, leading to instability or collapse of the building

Q: What are the potential benefits of this study?

A: The potential benefits of this study include:

Improved accuracy and reliability of methods for analyzing the carrying capacity and decrease of bored pile foundations
Development of new standards and guidelines for the design and construction of bored pile foundations
Improved safety and stability of buildings constructed on bored pile foundations
Reduced risk of failure or damage to the foundation or surrounding soil or structures.