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Breakthrough in engineering technology for the cross river bridge, supported by patent combinations, wins the National Science and Technology Progress Award
Case detail

A certain bridge engineering group has made significant breakthroughs in the research and development of "key technologies for wind and earthquake resistance of ultra long span cable-stayed bridges", but faces problems such as insufficient technical innovation demonstration and weak data support for achievement transformation when applying for the National Science and Technology Progress Award. This technology, through the design of new steel-concrete composite beams and the application of intelligent shock absorption systems, has increased the wind resistance level of bridges to once in a hundred years and improved seismic performance by 40%. It has been successfully applied to the construction of three cross river bridges, but the first award was not approved due to the scattered layout of core technology patents and insufficient quantification of engineering application effectiveness.

After our intervention, we first conducted a deep deconstruction of the technical system and extracted three core innovations: firstly, we developed the "Steel UHPC Composite Beam Segment Prefabrication Technology" to solve the problem of excessive self weight of traditional steel beams and improve construction efficiency by 35%; The second is to develop a "magneto rheological intelligent damping device" to achieve real-time buffering of seismic loads, with a damping effect of 55%; The third is to build a "full lifecycle health monitoring system" that achieves real-time structural status warning through more than 500 sensors. In response to these innovative points, we have assisted in organizing 32 patent evidence, of which 18 invention patents form a complete protection chain. Core patents such as "a wind stability control method for large-span cable-stayed bridge composite beams" have been identified as key evidence of technological breakthroughs.

In the construction of the evidence chain for achievement transformation, guide enterprises to collect construction data and operation monitoring reports of three major bridges, present the actual benefits of technology in reducing project costs (average savings of 8%) and shortening construction periods (average advance of 6 months) through comparative analysis, and compile 25 supporting materials such as owner evaluations and industry expert recommendations. At the same time, optimize the structure of award materials, highlight the logical loop of "theoretical innovation patent protection engineering verification", and strengthen the social value of technology in bridge safety assurance.

The optimized application materials successfully passed the review and ultimately won the second prize of National Science and Technology Progress Award. After winning the award, this technology was included in the "Design Specification for Highway Cable stayed Bridges" and promoted and applied in 10 large-scale bridge projects nationwide, with an additional contract amount of 1.5 billion yuan. The patent portfolio also helps enterprises win overseas bridge projects, achieve technological output, and become an important achievement for China's bridge engineering technology to go global.

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