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ResearchontheEarlyPerformanceEvolutionMechanismofUndergroundEngineeringConcreteStructuresandItsEngineeringApplication

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Registration number:G20250714

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Key words: early experimental system early performance design method Early deformation theory

Green classification:

Publisher:管理人员

Release time:2025-08-09 08:58:41.0

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Name of achievement: ResearchontheEarlyPerformanceEvolutionMechanismofUndergroundEngineeringConcreteStructuresandItsEngineeringApplication
Result registration number: G20250714 Subject classification:
Green classification: Item keywords: early experimental system   early performance design method  Early deformation theory    
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Tongji University

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Countries/regions: China Intellectual property rights:
Introduction: Click to view
Over the past decade, large underground engineering projects have scaled up to hundreds of meters in size and volumes exceeding ten thousand square meters; the uniqueness of construction conditions and usage environments has posed significant challenges to the implementation of such underground works. In response to the characteristics of cast-in-place concrete construction for underground engineering structures, the project research has focused on early performance testing of concrete materials and components, early performance design methods for underground concrete structures, as well as construction control technologies. The content of the project research encompasses technical difficulties in areas such as concrete material science and technology, structural design methods, construction techniques, and organization. The theoretical aspect studied the physical and chemical changes in the microstructure formation of concrete materials and their complex interaction with internal temperature and humidity fields, taking into account the stress field generated by macroscopic level loads on the structure, and established a model for the evolution mechanism of early physical and mechanical properties under multi-field coupling effects. In the study of early performance test technologies, The first establishment of a concrete active constraint early deformation performance test method and operation procedure, self-developed experimental devices and automatic testing instruments; integrated the early deformation and crack resistance capabilities of underground engineering concrete structures to propose an early performance design method for underground structures, breaking through the concept of load capacity ultimate state design; guided engineering practice through simulation analysis, combined with on-site remote monitoring technology, implemented technical measures such as concrete modification, component crack resistance design, and curing techniques to control the evolution of early performance. The research results have been successfully applied in dozens of major projects such as super high-rise buildings, underground complexes, and tunnels, and have been adopted for the early deformation performance analysis of the concrete in the 13th Line of Tokyo Metro and the early deformation control of underground engineering by Golden Gate Company in Hong Kong, achieving good results. The application of research results can not only improve the quality of underground engineering but also ensure its expected service performance; It can also promote the application of information technology in the traditional civil industry; at the same time, the idea of early performance design method for concrete structures can be applied to other structural engineering, which is of great significance for ensuring the sustainable development of infrastructure.
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