Sustainability

CIMS Project Management

With the development of digital construction in the global construction industry and the promotion of “Internet Plus” by the Chinese government, CSCI followed the trend to promote the application of construction site management collaboration cloud platform (“CIMS”) in the construction site by supporting the integration of the Internet and engineering construction. CIMS can assist engineers who perform engineering inspections, process management and building inspection management on the construction site to instantly record the problems identified through mobile Internet tools such as mobile phones. They can also assign rectification tasks to subcontractors online to track the overall progress.

Compared with the traditional methods of keeping record of problems and information transmission, CIMS significantly improves the communication efficiency in the management process, and facilitates the parties to understand their own responsibilities and work arrangements. The cloud platform has the function of archiving the entire process information, reducing the possibility of data loss and facilitating accountability tracing and improvement.

In addition, CIMS can survey issues such as quality, safety and process progress, and simultaneously generate various data analysis reports, so that users can more clearly understand the engineering details to carry out appropriate follow-up and control potential risks.

At present, CIMS is used in 12 sites in Hong Kong and 5 sites in Macao, recording more than 30,000 questions covering quality, safety, process and household acceptance. Through the systematic analysis report, the Group found that nailing, bar bending and concrete pouring are the processes where quality issues are most probable, so and thus strengthened training and supervision in these areas.

Bridge Maintenance Management System

The purpose of infrastructure is to enhance the quality of life of users and increase the overall competitiveness of society. CSCI’s commitment to society goes beyond construction, and is reflected in long-term maintenance of facilities. Supporting the long-term development of society with reliable and high-quality construction is one of the beliefs of the Group in contributing to society.

Connecting bridges throughout the city is the key to diverting urban traffic. The Second Nanjing Yangtze Bridge Limited Liability Company (hereafter referred to as “Nanjing Second Bridge Company”) under CSCI is responsible for the management and operation of the Second Nanjing Yangtze Bridge. Over the years, it has been continuously improving its maintenance system in accordance with the requirements of ‘Excellent engineering, first-class management’. Based on ‘Society-based maintenance, streamlined inspection, professional repair, science-based management’, the system is dedicated to improving the quality of maintenance with innovative and scientific methods, while reducing costs and achieving higher social benefits. It has become a role model for bridge project maintenance.

Nanjing Second Bridge Company adopts scientific management, and its achievement of ‘orthogonal steel bridge deck epoxy asphalt pavement maintenance technology’ and ‘steel box beam fatigue damage research and repair technology’ are among the top technologies in the country. The orthogonal steel bridges of traditional steel bridges are prone to fatigue cracking and the pavement layer is often damaged, which is a common problem worldwide. Since the completion of the bridge, Nanjing Second Bridge Company has commissioned scientific research units including Southeast University to set up special research projects to explore the maintenance methods of steel bridge decking. In response to the gradual fatigue cracking problem after ten years since commencement, Nanjing Second Bridge Company also commissioned institutions and experts to study and analyse the mechanism of disease generation and formulate scientific and reasonable solutions. Therefore, Nanjing Second Bridge Company successfully formulated the steel bridge deck pavement maintenance plan, and provided reference for the treatment of fatigue cracks in the same type of bridge orthogonal orthotropic steel bridge deck in the country. The experience of the Second Nanjing Yangtze Bridge has been successfully applied to large bridges such as Anhui Anqing Bridge and Hubei Wuhan Junshan Bridge.

To ensure the effectiveness of the maintenance management system, Nanjing Second Bridge Company has established a comprehensive inspection system, which is included in the Second Nanjing Yangtze Bridge Maintenance Manual, requiring the relevant personnel to conduct daily inspections, monthly inspections, special quarterly inspections and an annual census. This system guarantees drivers’ safety, stability of bridges and the normal operation of equipment. At the same time, the Nanjing Second Bridge Company emphasised the establishment of a sound project maintenance file management system, which complies with national and archival management requirements, and properly preserves the technical parameters accumulated in the maintenance jobs, providing a reliable basis and scientific reference for decision-making.

In addition, in view of the technical characteristics of the Nanjing Second Bridge, the Nanjing Second Bridge Company established the South Bridge structural health monitoring system in addition to routine and special inspections. The stress and strain of the cable-stayed bridge, the base sinking, change in deflection, the cable force, ridge deck pavement and collision avoidance were monitored on a 24-hour dynamic system to ensure the overall safety of the bridge, and effectively grasp the real-time status of the bridge structure and provide a scientific basis for project maintenance.