Date: October 2025

By: Ougan Technology Co., Ltd.

Project Background

Ougan Technology successfully completed a high-precision pile foundation load test for a cross-sea port construction project in Papua New Guinea, utilizing its independently developed Bi-Directional Static Load Test technology. The project involved testing 22,000 kN high-capacity pile foundations, ensuring the structural safety and quality of the port infrastructure. This achievement demonstrates the strong technical capabilities of Chinese construction technology under complex overseas conditions.

Core Testing Parameters

The pile foundation test focused on the critical load-bearing structures of the project. Key parameters included a pile diameter of 1100 mm and a load capacity of 22,000 kN. The testing process achieved high precision in data accuracy to provide reliable information for subsequent construction and quality control. These parameters provide an essential basis for engineering construction and quality management, ensuring that subsequent superstructure work can be carried out safely and efficiently.

Technical Challenges

The Papua New Guinea project presented multiple technical challenges. 

1. The first challenge was high seismic design requirements. Located in the South Pacific seismic belt, the project required pile foundations to meet extreme seismic resistance standards equivalent to a seismic intensity of 9 in China.

2. The second challenge was the difficulty of large-capacity pile testing. Testing large-diameter, high-capacity piles required precise load synchronization to avoid uneven stress and inaccurate readings. Managing pile bottom sediment was also crucial to prevent data distortion.

3. The third challenge was the complex site environment. The tropical high temperature and high humidity demanded robust equipment performance. Moreover, overseas project coordination, including supply chain management and construction workflow, required full-scenario adaptability from the technical team.

Innovative Technical Solutions

Ougan Technology deployed three core innovations to ensure accurate and safe pile testing.

Ring-Belt Hydraulic Jacks for Load Test

The first innovation was the Ring-Belt Hydraulic Jacks for Load Test, featuring an optimized ring-steel structure with customized top and bottom connection plates. This design ensures full concrete filling during pouring, avoiding structural weak zones, and significantly improving testing accuracy, equipment safety, and service life.

Flow Guide Structure

The second innovation was the Flow Guide Structure, which uses a conical guide device to direct pile bottom sediment away during underwater concrete pouring. This prevents “false displacement” and ensures a true reflection of pile settlement and deformation.

Medium-Low Pressure Loading Technology

The third innovation was the Medium-Low Pressure Loading Technology, which achieves a 22,000 kN load with an oil pressure of no more than 25 MPa, compared to 40–65 MPa in traditional load boxes. This reduces equipment wear and operational risks, greatly improving testing safety and reliability.

Professional Assurance

Comprehensive Support System

Ougan Technology provided a comprehensive support system covering technical, risk, and post-testing services. Full-process on-site technical support was implemented, including equipment calibration, installation, load testing, and data analysis, all in full compliance with international pile testing standards.

PICC product liability insurance

In addition, third-party risk coverage through PICC product liability insurance ensured equipment quality and protected client interests. 

Grouting Reinforcement of Pile Foundation

Following the test, high-pressure grouting reinforcement was carried out to restore pile integrity. As a result, side friction resistance increased by 40%–80%, significantly enhancing the overall pile bearing capacity.