Views: 224 Author: Site Editor Publish Time: 2025-06-26 Origin: Site
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1. Material genetics: the ultimate application of high-strength steel
● 2. Structural Design: The Ultimate Pursuit of Mechanical Efficiency
>> Modularity and strength synergy
● 3. Verification system: 10,000 times of refinement from the laboratory to the site
In the field of bridge engineering, strength is the cornerstone of safety and lifespan. Faced with the challenges of complex loads, extreme environments, and long-term use, traditional bridges often need to sacrifice strength for complex structures or high costs. And our steel structure movable bridge, through material innovation, structural optimization and process breakthrough, has realized the "golden balance of strength and efficiency" - without stacking redundant design, it can provide a bearing capacity guarantee that exceeds the industry standard. The following analyzes our "strength code" from three dimensions.
Using Q690 grade high-strength low alloy steel (tensile strength ≥ 690 MPa, more than 50% higher than ordinary steel), eliminate internal defects through hot rolling + controlled rolling process, ensure material uniformity.
Key nodes use self-developed gradient reinforcement steel, surface hardness increased by 30%, fatigue resistance increased by 2 times, and can withstand repeated load impact.
the report of the third-party inspection shows that the limit bearing capacity of the single-span bridge is 120 tons / m, far exceeding the requirement of 80 tons / m in the national standard GB / T 714- 2017.
The contradiction between lightness and strength is broken
By re-designing the cross-sectional shape through topology optimization algorithm, the strength can be increased by 40% under the same weight (Case: A river crossing bridge project reduces the weight by 15% compared to the traditional design, but the bearing capacity is increased by 25%).
Laser welding technology achieves 0.1 mm welding precision, eliminates the risk of stress concentration, and achieves a weld strength of 98% of the base material.
Bionic structure innovation
drawing on the hexagonal bearing principle of honeycomb, the bearing efficiency of unit area is improved by 60%, and redundant materials are reduced at the same time.
Dynamic load dispersion system: through pre-stressed tension technology, the concentrated load is transformed into uniformly distributed stress, and the local stress peak is reduced by 35%.
The standardized module interface adopts a triple locking mechanism (hydraulic clamp + bolt + dovetail), with a shear strength of 120kN, far exceeding the industry standard of 60kN.
The modules are seamlessly connected through pre-embedded strengthening ribs, forming an overall stress system to avoid the "weak link" at the traditional joint.
Lifecycle strength verification
high-frequency fatigue test: simulate 10 years of use cycle (equivalent to 500,000 cycles of load), cumulative deformation <3mm.
Extreme environment testing: -40 ℃ low temperature impact test (no brittle fracture), salt spray corrosion test (rust rate < 0.5% after 2000 hours).
The bridge deployed in the high-altitude (4500 meters) and strong sandstorm environment of the Qinghai-Tibet Plateau has maintained 100% structural integrity after three years of monitoring.
Intelligent monitoring system support
The built-in fiber Bragg grating sensor monitors stress and deformation data in real time, automatically warns of abnormal fluctuations, and ensures that strength performance is always online.
Customers can view the health status of the bridge through the mobile APP, and the accuracy of preventive maintenance has been improved by 70%.
Strength is not a cold number, but a commitment to responsibility. Our steel structure movable bridge uses scientific material selection, intelligent design, and extreme verification to build a "strength moat", so that every bridge can stand firm in the wind and rain and be at ease under heavy pressure.
