A crack control optimization method for improving the creep performance of ultra-high performance concrete (UHPC) in a hybrid structure

CN122245546APending Publication Date: 2026-06-19EAST CHINA JIAOTONG UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
EAST CHINA JIAOTONG UNIVERSITY
Filing Date
2026-03-11
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

Existing technologies are difficult to adapt to the complex and ever-changing service environment in actual engineering of ultra-large span hybrid structures, resulting in a significant deviation between the actual creep performance of UHPC and the design expectations. There is a lack of coordinated control throughout the entire life cycle, and the performance of repair materials is mismatched with that of the matrix UHPC, making it difficult to achieve precise control of creep and cracks.

Method used

By collecting environmental data and performing cluster analysis, the optimal UHPC scheme is generated. The mix ratio is optimized in combination with on-site performance parameters. The UHPC service process is monitored in real time to generate suitable optimized mix ratio parameters. Based on crack data and environmental adaptation data, repair parameters are generated to establish a collaborative optimization mechanism for creep performance and crack control.

Benefits of technology

It improves the creep resistance of UHPC, inhibits crack initiation and propagation, ensures the long-term service safety and durability of ultra-large span hybrid structures, reduces operation and maintenance costs, and improves repair effect and material compatibility.

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Abstract

This invention discloses a crack control optimization method for improving the creep performance of ultra-large span hybrid structures (UHPCs), belonging to the field of crack control technology. The invention includes production control optimization, crack control optimization, and repair control optimization. First, through production control optimization, based on environmental clustering analysis and multi-index weighted evaluation, the optimal UHPC scheme is matched to the current service environment to prepare a basic UHPC. Second, through crack control optimization, based on the anomaly identification of on-site UHPC environmental performance parameters, combined with correlation analysis and multi-objective optimization, suitable optimized ratio parameters are generated to prepare an optimized UHPC. Finally, through repair control optimization, based on the collaborative analysis of hybrid structure crack data and environmental adaptation data, UHPC repair parameters are generated to complete precise crack repair. This invention effectively improves the creep resistance of UHPCs, inhibits crack initiation and propagation, and significantly ensures the long-term service safety and durability of ultra-large span hybrid structures.
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