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Concrete compressive strength detection method and system based on similarity judgment

A technology of compressive strength and detection method, which is applied in the direction of applying stable tension/pressure to test material strength, instruments, character and pattern recognition, etc., and can solve problems such as test block damage and large test results

Active Publication Date: 2021-07-23
张启志
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  • Claims
  • Application Information

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Problems solved by technology

[0003] In the existing pressure method detection, it is necessary to control the loading speed of the press. If the loading speed is too fast, the test result will be too large. If the loading speed is too slow, the test block will be easily damaged.

Method used

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  • Concrete compressive strength detection method and system based on similarity judgment
  • Concrete compressive strength detection method and system based on similarity judgment
  • Concrete compressive strength detection method and system based on similarity judgment

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Embodiment 1

[0037] combine figure 1 As shown, the present embodiment provides a method for detecting the compressive strength of concrete based on similarity determination, which includes the following steps:

[0038] Step S1, construct reference sample set S

[0039] In this step, S={S i |i=1, 2, 3, ..., m}, S i Indicates the i-th reference sample in the reference sample set S; S i =(P i , Q i ), P i For the reference sample S i The critical pressure value, Q i For the reference sample S i strain sequence; Q i ={(D ij , F j )|i=1, 2, 3,..., m; j=1, 2, 3,..., n}, n is the strain sequence Q i The sequence length of D ij is the strain sequence Q i The response variable corresponding to the jth point in , F j is the strain sequence Q i The pressure value corresponding to the jth point in ; for any reference sample S i , F 1 The values ​​are consistent, and any adjacent point has F j -F j-1 =C, C is the set pressure interval value;

[0040] Step S2, obtaining the real-tim...

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Abstract

The invention relates to the technical field of concrete detection, in particular to a concrete compressive strength detection method and system based on similarity judgment. The method comprises the following steps: S1, constructing a reference sample set S; S2, acquiring a real-time strain sequence of the current detected object; S3, performing similarity matching on the real-time strain sequence and the reference sample set to obtain a predicted critical pressure value; S4, calculating a loading speed V based on the predicted critical pressure value Pd and the current pressure value Pt; S5, calculating the compressive strength of the current detected object; and S6, updating the numerical value set (Px, Qx) of the detected object to the reference sample set. The system is used for implementing the method. According to the invention, the adjustment of the loading speed in the concrete compression test process can be well realized.

Description

technical field [0001] The invention relates to the technical field of concrete detection, in particular to a method and system for detecting compressive strength of concrete based on similarity judgment. Background technique [0002] As an important indicator of concrete, the compressive strength is tested by the pressure method, following the steps below: (1) making the test piece; (2) applying pressure to the test piece with the help of a press; (3) The critical pressure value at which the specimen is destroyed is recorded, and the compressive strength of the concrete can be better obtained based on the critical pressure value. [0003] In the existing pressure method detection, it is necessary to control the loading speed of the press. If the loading speed is too fast, the test result will be too large, and if the loading speed is too slow, the test block will be easily damaged. At present, the control of the loading speed is through two-stage control; the first stage i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/08G06K9/62
CPCG01N3/08G06F18/22Y02P90/30
Inventor 王小东杨爱敏朱俊红买晨雨董燕刘伟邵经芳李波张启志曹中顺
Owner 张启志
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