Bored Pile Drilling for the Phap Van – Cau Gie Project at Ring Road 3

Investment and Construction Project of the Connecting Road between Phap Van – Cau Gie Expressway and Ring Road 3: Bored Pile Construction Solution under Complex Geological Conditions

The project to construct the connecting road between the Phap Van – Cau Gie Expressway and Ring Road 3 is a key infrastructure project with a total investment exceeding VND 3,200 billion, playing a crucial role in reducing traffic congestion at the southern gateway of Hanoi.

In this article, Hanoi Vietnam provides an in-depth analysis of technical aspects, practical performance, operational costs, and comparisons with other equipment solutions, thereby assisting engineers and project owners in making informed decisions.

The connecting route between the Phap Van – Cau Gie Expressway and Ring Road 3 is not only a major transportation project but also a critical solution to relieve congestion at Hanoi’s southern gateway. With a total investment of over VND 3,200 billion, the project requires highly robust foundation construction methods to ensure quality, progress, and long-term operational performance.

Notably, this area features complex geological conditions with multiple layers of mud, clay, sand, silt, and organic materials. Therefore, selecting the appropriate bored pile construction (BPC) technology and suitable machinery is a decisive factor. The following sections provide an in-depth analysis of site geology, equipment solutions, and the rationale for choosing Kobelco and Nippon Sharyo drilling rigs during construction.

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Geological Characteristics of the Project Site

The geological conditions along the project alignment are highly stratified and complex, consisting of multiple layers of soil, clay, and sand, each with different plasticity, density, and bearing capacity. Notable characteristics include:

Pond and canal mud: thick mud layers with high water saturation, extremely low bearing capacity, and high settlement risk.
Soft plastic silts and clays (MH, ML, OH, CL, CH): ranging from flow plastic to soft plastic states, with low shear strength, requiring deep bored pile treatment.
Silty sand and poorly graded sand mixed with fines and gravel (SM, SP-SM, GM): medium-dense to very dense structure, offering better bearing capacity and typically serving as pile anchoring layers.
Gravel and fine sand layers: dense soil strata playing a key role in forming reliable pile toe support.

The interbedding of weak and dense soil layers poses significant challenges for contractors in selecting appropriate construction technologies and equipment.

Bored Pile Construction Solution Using Kobelco and Nippon Sharyo Drilling Rigs

Based on geotechnical investigations, Hanoi Vietnam Co., Ltd. selected a flexible-leader bored pile drilling solution, which is well-suited to confined working spaces and complex soil conditions.

The main equipment deployed includes:

Kobelco 7055 drilling rig – renowned for its stability, deep drilling capability, and excellent performance on weak ground.
Nippon Sharyo DH500-5 drilling rig – a durable Japanese machine specifically designed for large-diameter, deep bored pile construction.

Both rigs are equipped with R10 drilling tools, operating from natural ground level down to the full pile design depth, with an average drilling depth of approximately 50 meters. This solution ensures:

Penetration through weak soil layers (mud and flow plastic clay) to reach denser bearing strata.
Formation of bored piles with high load-bearing capacity, resisting settlement and structural deformation.
Rapid construction progress while minimizing disruption to urban traffic.

Reasons for Selecting Kobelco and Nippon Sharyo Drilling Rigs

The choice of Kobelco and Nippon Sharyo rigs is driven by their outstanding technical advantages:

Deep drilling capability: meeting requirements for bored piles exceeding 50 meters in depth across multiple weak soil layers.
Reliability and durability: proven long service life of Japanese equipment, minimizing breakdowns and maintenance costs.
Terrain adaptability: flexible-leader configuration suitable for narrow sites with dense underground utilities.
Cost optimization: although initial operating costs may be higher, the solution ensures long-term quality and durability, reducing future remedial expenses.

Compared with other drilling rigs available on the market, Kobelco and Nippon Sharyo are widely regarded as optimal solutions for transportation infrastructure projects with high demands on durability and schedule.

Significance of the Construction Solution for the Project

The bored pile construction approach using Kobelco and Nippon Sharyo equipment delivers multiple practical benefits:

Ensured structural safety: capable of carrying heavy loads from road structures and traffic.
Reduced settlement risks: effective treatment of thick weak mud layers in canal- and pond-side areas.
Extended service life of the roadway: minimizing cracking and pavement damage during long-term operation.
Shortened construction schedule: meeting the urgent timeline requirements of a national key project.

Overall, this represents a strategic choice that directly contributes to the successful implementation of the connecting road project between the Phap Van – Cau Gie Expressway and Ring Road 3.

Conclusion

The Phap Van – Cau Gie – Ring Road 3 connecting road project features complex geological conditions, requiring specialized bored pile solutions.
Kobelco 7055 and Nippon Sharyo DH500-5 drilling rigs equipped with R10 tools are optimal for penetrating weak soil layers and reaching dense bearing strata.
This solution ensures structural safety, construction quality, accelerated progress, and long-term cost efficiency.

For further information, please contact us:

🌍 Website: https://mayxaydunghanoi.com
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