Successful Installation of HSBRIDGE 300t Bridge Launching Gantry in Indonesia

Recently, HSBRIDGE’s self-developed bridge construction equipment showed excellent practical capabilities again. It supported major infrastructure projects in Southeast Asia. At a cross-sea highway site in Java, Indonesia, a new custom 300t bridge launching gantry underwent strict assembly and testing. In mid-month, it successfully completed the precise erection of the first precast concrete box girder. This successful operation marks the comprehensive start of large-scale high-altitude upper structure assembly. It also proves the excellent adaptability of this heavy equipment in complex transnational terrains and extreme climates.

Construction Background and Project Challenges

Indonesia has a tropical monsoon climate. The project site experiences frequent severe convective rainfall. The bridge sections cross deep valleys, rapid rivers, and existing traffic lines. Traditional cast-in-place methods are expensive and time-consuming. They also cause massive damage to the local ecological landscape. After multiple early feasibility studies, the main contractor made a final choice. They combined precast segmental assembly with overall lifting methods. This high-standard and high-risk task required special solutions. The HSBRIDGE technical team conducted months of field surveys and data simulations. They custom-built this 300t bridge launching gantry for the project.

300t Bridge Launching Gantry Core Parameters and Configurations

To meet large-span and high-drop lifting needs, this 300t bridge launching gantry was deeply optimized. Improvements covered the main mechanical beam and electrical automation control. This ensures extreme stability even under harsh working conditions. Below are the core technical parameters and specifications of the delivered equipment:

300t Bridge Launching Gantry On-site Installation and System Commissioning

Facing high communication costs and scarce local resources, the HSCRANE team followed standard manuals and advanced implementation efficiently:

• High-Altitude Segmented Main Beam Assembly: Due to road load limits, modular main beam segments were delivered to the bridge deck. Two crawler cranes completed precise docking on temporary supports using high-strength bolts. Strict pre-camber and lateral bending controls ensured maximum structural rigidity.
• Hydraulic Leg and Traveling Calibration: Technicians pressure-tested cylinder strokes across all legs. They dynamically monitored guide beam deflection during simulated continuous cantilever crossings. Micrometer-level track flatness retests guaranteed center-of-gravity stability during feeding and dropping.
• Core Electrical Control Joint Debugging: The system adopted bus-type VFD speed regulation instead of rough relays. Experts verified 100+ sensor signals, including weight limiters and anti-skew devices. They collected braking data under no-load, static, and 110% overload conditions.
• Load Testing and First Beam Erection: The gantry successfully erected a 280-ton box girder through synchronized lifting, moving, and precise placement. Dynamic leg forces remained within safe limits. Final placement error stayed strictly under 5 millimeters.

Project Summary and Delivery Significance

The successful deployment of lifting equipment in Indonesia is a major project victory. It also perfectly aligns domestic heavy equipment standards with strict overseas construction rules. The transnational delivery of this 300t bridge launching gantry tests more than factory hardware metrics. It also challenges full-lifecycle overseas on-site service and technical support capabilities. In the future, our manufacturing base will keep exploring heavy bridge lifting equipment R&D. We will use strict process standards and efficient technical support. This will safeguard more large-scale global transportation hub projects.

Anni Zhang

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