en.Wedoany.com Reported - Recently, the main bridge of the Saribas Bridge project in Malaysia, undertaken by CSCEC 8th Bureau, was successfully closed, marking a key breakthrough and accelerating the full-line completion and opening to traffic.
The Saribas Bridge in Malaysia is the first bridge project undertaken by CSCEC in the country, with a total length of 2.43 kilometers. The main bridge adopts a six-span prestressed concrete continuous rigid frame system with a maximum span of 220 meters, making it one of the longest main spans of its type in Southeast Asia.
Once completed and opened to traffic, the project will become a major transportation artery connecting urban and rural areas in Sarawak, bridging gaps in the local road network, significantly improving regional traffic efficiency, and building a more convenient and efficient modern transportation system.
Millimeter Precision Control Achieves Perfect Closure
The main bridge adopts a variable cross-section prestressed concrete continuous beam, featuring ultra-long underwater pile foundations, large pile caps, high piers, and extra-large spans. The closure segment, located at the secondary mid-span, is 2 meters long, requiring extremely high control over temperature, elevation, and alignment.
Facing extreme construction conditions such as high temperatures, frequent rainfall, and complex tidal conditions, the project team implemented precise measures and scientific breakthroughs. By using rigid skeleton locking combined with low-temperature pouring techniques, continuous temperature monitoring over five days, and precise water tank counterweight adjustments, the closure error was strictly controlled within millimeter range, achieving a robust "connection" of the main bridge.
Solid Foundation Builds Smooth Pathways
The main bridge adopts a high-pile cap foundation design, with bored cast-in-place piles reaching a maximum length of 120 meters. The bridge site is located in an estuary tidal area with a maximum water depth of 19 meters, a tidal range of up to 5 meters, and a maximum flow velocity of 2.5 m/s during the monsoon season.
To address challenges such as ultra-long pile construction and tidal flow interference, the project adopted techniques including prefabricated steel box cofferdam bottom plates, anti-floating measures with steel casings, and low-tide wet joint water sealing. This ensured that the verticality deviation of ultra-long pile holes was less than 1%, and all pile integrity test results were Class I, comprehensively guaranteeing the stability and safety of the bridge foundation structure.
Craftsmanship Empowers Hardcore Skills
Facing technical difficulties in asymmetric cantilever construction, the project used a "counterweight balance method" to control asymmetric bending moments, synchronized walking of hydraulic step-type form travelers, and high-precision formwork installation to ensure segment positioning. This was supplemented by real-time monitoring and linear rolling correction algorithms to dynamically adjust camber, effectively mitigating construction risks in complex marine conditions and ensuring balanced structural forces and smooth alignment.
During construction, the project adhered to safety bottom lines, strictly controlled engineering quality, and improved the safety and quality management system. With excellent safety and environmental management results, it won the Malaysia National Occupational Safety and Health Excellence Silver Award and the Sarawak State Health, Safety, and Environment Gold Award, enhancing the overseas safety performance reputation of Chinese construction.
Spanning the sea like a rainbow, echoing along the Silk Road, CSCEC 8th Bureau will bravely shoulder its mission, build with craftsmanship, jointly draw the blueprint for overseas development with practical responsibility, and write a new chapter of the "Belt and Road" with high-quality projects.
