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Damage identification and estimation system for small concrete beam fatigue test

A fatigue test and damage identification technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems of high cost, long fatigue test cycle of concrete trabeculae, harsh conditions, etc., to reduce manpower and expand applications. Scope, the effect of improving execution efficiency

Inactive Publication Date: 2015-12-16
CHINA RAILWAY URBAN PLANNING & DESIGN INST
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Problems solved by technology

[0002] Indoor fatigue test research on concrete girder specimens has been widely used in engineering, but the concrete girder fatigue test has the disadvantages of long cycle, high cost and harsh conditions. In addition, it is limited by funds, test equipment and technical means. It is still unrealistic to conduct concrete fatigue tests in a wide range to study its fatigue performance

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  • Damage identification and estimation system for small concrete beam fatigue test

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Embodiment Construction

[0022] In order to deepen the understanding of the present invention, the present invention will be further described below in conjunction with the examples, which are only used to explain the present invention, and do not constitute a limitation to the protection scope of the present invention.

[0023] Including an input module, a query module and an output module, the input module includes parameter query conditions of model form, model coefficient, limit load, repeated load, initial modulus, initial stress and fracture toughness, and the query module includes Database, data matching and interpolation, and query result output, the output module includes query results, the query results are used for text output storage and fatigue life display respectively, by inputting different parameters as query conditions, and searching with the data inside the database , the retrieved data are then matched and interpolated, and finally the fatigue test results are obtained. The fatigue ...

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Abstract

The invention discloses a damage identification and estimation system for a small concrete beam fatigue test. Different concrete fatigue damage evolution equations are selected, embedded computation is realized through secondary development of software, indoor small beam fatigue test data is used to identify damage evolution equation parameters, and the identification precision is verified. The developed estimation system for the small beam fatigue numerical test consists of a condition input module, a query module and a result output module, breaks through a conventional mode for obtaining related data by a large amount of indoor tests, and greatly reduces indoor small beam fatigue test frequency. According to the damage identification and estimation system, smart query system development of a graphic user interface of small concrete beam fatigue life is realized and the consumption of manpower, material resources, financial resources, time and the like in concrete fatigue research can be remarkably reduced.

Description

technical field [0001] The invention relates to a damage identification and prediction system for a concrete beam fatigue test, which belongs to the technical field of civil and construction engineering detection. Background technique [0002] Indoor fatigue test research on concrete girder specimens has been widely used in engineering, but the concrete girder fatigue test has the disadvantages of long cycle, high cost and harsh conditions. In addition, it is limited by funds, test equipment and technical means. It is still unrealistic to conduct concrete fatigue tests in a wide range to study its fatigue performance. In view of this, the present invention is based on the theory of fracture damage, simulates the trabecular fatigue test with the help of numerical software, and determines the reliability of the method by comparing with the real test results. The numerical simulation is used to replace the real trabecular fatigue test, which greatly reduces the cycle, cost and...

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Application Information

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IPC IPC(8): G06F17/50
Inventor 刘东泽张勇李仿皇陶良庆闫化冰孙建赵康
Owner CHINA RAILWAY URBAN PLANNING & DESIGN INST
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