A fatigue deformation evolution model of concrete based on Weibull equation

A fatigue deformation and evolution model technology, applied in CAD numerical modeling, instruments, data processing applications, etc., can solve the problems of difficulty in popularization and application, complex model forms, etc., and achieve the effect of simplifying detection equipment, reducing calculation amount, and being easy to use
CN109522571AActive Publication Date: 2019-03-26ZHEJIANG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHEJIANG UNIV
Publication Date
2019-03-26

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Abstract

The invention discloses a concrete fatigue deformation evolution model based on Weibull equation. In the developing field of modern civil engineering, the fatigue behavior of concrete has become one of the focuses of attention. How to accurately characterize the fatigue evolution of concrete and predict the fatigue life of concrete has become an important issue in the field of engineering construction. The model provided by the invention can be used for characterizing the deformation evolution law of concrete under compression, tensile and flexural fatigue loads. It has many advantages such asapplicable load forms, concise expression, easy to use and high precision. The calculation amount can be greatly reduced in use, and only two fatigue parameters, the number of fatigue load cycles n and the deformation Epsilon corresponding to a certain stress in the nth cycle, can be measured, which simplifies the testing equipment. The model can provide important technical support for the wholeprocess of engineering design, construction, testing and maintenance.
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Description

technical field

[0001] The invention belongs to the technical field of concrete fatigue deformation evolution model. Background technique

[0002] Since the advent of Portland cement in the 19th century, concrete has been widely used in transportation, construction, water conservancy, marine and other engineering fields, and is the most used material in engineering construction. At the beginning of the 20th century, with the construction and development of reinforced concrete bridges, related research on the fatigue performance of concrete materials was gradually carried out. Since the 21st century, with the construction of large-scale infrastructure such as highways, high-speed railways, super high-rise buildings, super-high dams, sea-crossing bridges, and ocean platforms, concrete structures are facing more complex and harsh conditions such as cyclic loads and alternating environments. Conditions of service. On the other hand, the further development of concrete structur...

Claims

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