Industry Qualification
The company's main bridge safety equipment products include bridge bearings, bridge seismic isolation devices, bridge expansion joints, and spherical hinges.
Spherical bearings, located between the bridge beam and piers, bear and reliably transfer the load from the superstructure to the substructure. They also accommodate deformations (displacement and rotation) caused by temperature changes, load effects, and concrete shrinkage and creep, making them a crucial component ensuring bridge structural safety and playing a core "joint" role in ensuring bridge operation. They are mainly used in national railways, regional rail transit, regional expressways, and cross-river and cross-sea bridges, solving the problems of rapid response and durable use under dynamic loads in high-speed railway bridges. They have overcome the design bottlenecks of large-tonnage spherical bearings for high-speed railway bridges, and their corrosion-resistant spherical bearings have solved the problems of durability and long-term safe use of bearings in cross-river and cross-sea bridges.
Spherical seismic isolation bearings are located between buildings and connecting corridors or the bottom seismic isolation layer. They reduce deformation under seismic loads. Types include hyperboloid and corrosion-resistant seismic isolation bearings, as well as dampers. When a bridge encounters an earthquake, they isolate the peak seismic load, reduce seismic energy, and decrease the seismic forces on the bridge structure, protecting its safety. They are mainly used in national railways and cross-river and cross-sea bridges, solving the compatibility challenges of integrating multiple functions such as beam elevation, seismic safety in high-seismic zones, durability, wind and earthquake resistance, precise switching from normal to seismic isolation mode, seismic isolation during earthquakes, earthquake-resistant beam collapse prevention, and post-earthquake self-resetting.
Special bearings include wind-resistant bearings, tension-compression bearings, and general-purpose force-measuring bearings, meeting the special load-bearing or functional requirements of bridges. Primarily used in cross-river and cross-sea bridges, the general-purpose force-measuring bearing solves the problems of accurate force measurement for large-tonnage bearings and insufficient installation space for force-measuring structures. It enables full life-cycle safety monitoring of bridge bearings, with intelligent monitoring accuracy reaching up to 3% F.S. The wind-resistant and compression-resistant bearings address technical challenges in cable-stayed and suspension bridges, such as uniform force transmission, rotation angle, and displacement release.
The spherical hinge is a core component in bridge rotation construction. Located between the pier and the bridge foundation, it is crucial for ensuring the safety and accuracy of the rotation. It transfers the weight of the bridge superstructure and uses its own horizontal rotation to achieve displacement of the superstructure, thereby reducing the impact on the crossing line, mitigating adverse environmental effects, facilitating construction, and shortening the construction period. The limitations and manufacturing challenges of heavy-duty swivel joints have been overcome, achieving high load-bearing capacity, high stability, and low-friction rotation. The intelligent swivel joint further enables intelligent and visual control of bridge rotation, reducing on-site manual labor intensity, minimizing human interference, and improving bridge rotation safety. The asymmetric swivel joint solves the problems of unbalanced bridge rotation technology, bridge self-locking at any position, and over-rotation control.
The expansion joint, located between adjacent beams, compensates for beam deformation and provides waterproofing at the beam ends. It allows for free expansion and contraction along the bridge axis and relative deformation in the lateral, longitudinal, and vertical directions, ensuring smooth vehicle passage without sudden jumps or noise. It also provides waterproofing and protection against debris seepage. Primarily used in national railways and cross-river/sea bridges, it solves the problems of low-modulus two-component polyurethane formulations for railway bridges and their environmental applicability under various working conditions, clarifies the impact of high-speed railway vibration on interface stress, and solves the problem of displacement balance control in cross-river/sea bridges.
Main products
Case Presentation
Lingdingyang Bridge of Shenzhen-Zhongshan Channel
Harbin-Qiqihar High-Speed Railway Songhua River Bridge
Suzhou-Nantong Yangtze River Bridge
Manufacturing capability
Contact Us
Comprehensive Management: 0086 -0379-67256901
Address: No. 88 Binhe North Road, High tech Industrial Development Zone, Luoyang City, Henan Province
Postal Code: 471000
Email: srtz@tzsunrui.com
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