Novel inner pressure limit test device and method for concrete hemispherical shell

Abstract

The invention discloses a novel inner pressure limit test device for a concrete hemispherical shell. The novel inner pressure limit test device comprises a capsule, a blocking device, a pressurizing device, a deformation detection device and a data collecting and processing device. According to the novel inner pressure limit test device, the pressurizing device is utilized for pressurizing the capsule until the capsule is destroyed and transmitting a pressure signal to the data colleting and processing device, the capsule is used for uniformly applying an expansion pressure to the inner surface of the concrete hemispherical shell, the deformation detection device is used for detecting the deformation of the concrete hemispherical shell and transmitting a deformation signal to the data collecting and processing device, and the data collecting and processing device is used for analyzing the signals to obtain an inner pressure limit of the concrete hemispherical shell and a relation between an inner pressure and a destruction form; compared with the prior art, the novel inner pressure limit test device is utilized for repeatedly detecting steel reinforced concrete hemispherical shells with different thicknesses and radiuses and can be used for predicting the possible destruction form of the concrete hemispherical shell. The invention further discloses a test method based on the test device.

Description

technical field [0001] The invention relates to the technical field of testing shell structures in buildings or structures, in particular to a concrete that can test the internal pressure that a reinforced concrete hemispherical shell can withstand, the relationship between the internal pressure and the failure form, and the influencing factors of the limit internal pressure A new limit internal pressure testing device and testing method for hemispherical shells. Background technique [0002] The containment of nuclear power plants, offshore platforms, large silos and liquid storage tanks are industrial fields that have developed rapidly in recent years and have broad prospects. Most of them are large-scale key projects in the country. Pay attention to. [0003] Concrete hemispherical shells in actual buildings or structures often have accidents such as concrete hemispherical shells rupture due to excessive internal pressure and insufficient strength. However, due to factor...

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Problems solved by technology

[0003] Concrete hemispherical shells in actual buildings or structures often have accidents such as concrete hemispherical shells rupture due to excessive internal pressure and insufficient strength. However, due to factors such as large volumes and complex structural forms of these buildings or structures, engineering It is difficult for technicians to carry out scientific experimental research on accurate prototype structures, and it is inconvenient to test the internal pressure that reinforced concrete hemispherical shells can withstand, the relationship between internal pressure and failure forms, and the influencing factors of ultimate internal pressure, so it is impossible to predict the concrete hemispherical shell. The possible failure forms and the influencing factors of the ultimate internal pressure when subjected to the corresponding internal pressure are used to give the suggested value of the thickness limit of the concrete hemispherical shell, and to guide the engineering design of this type of structure, so as to improve the ability of this type of structure to resist accidents

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