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Plane point stress state detector and detection method

A technology of stress state and detector, applied in the direction of force/torque/work measuring instrument, instrument, measuring device, etc., can solve the problem that the shear stress cannot be measured, and achieve the effect of simple structure, high accuracy and easy installation

Inactive Publication Date: 2018-11-13
CHINA ELECTRIC POWER RES INST +2
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Problems solved by technology

The current conventional stress testing methods in the geotechnical field include pressure sensors, steel bar gauges, and strain gauges. Conventional pressure sensors can only measure the normal normal stress of the pressure bearing surface, but cannot measure shear stress; the steel bar gauge is only suitable for measuring the axis of steel bars. force; and special-shaped strain gauges (strain rosettes) can measure the stress state of a point on the plane, but only on the surface of the material

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  • Plane point stress state detector and detection method
  • Plane point stress state detector and detection method
  • Plane point stress state detector and detection method

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Embodiment Construction

[0023] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0024] A plane point stress state detector, the detector includes a base, 3 pressure sensors and cables corresponding to the pressure sensors, such as figure 1 The base shown is a triangular prism, and the first side, the second side and the third side of the triangular prism are all provided with inserting grooves on which the pressure sensors are placed, and the center of the inserting grooves is provided with an inward extension. the cable through hole;

[0025] The center of the triangular prism is provided with an axial cable through hole, and the axial cable through hole communicates with the cable through hole.

[0026] Specifically, the embedding grooves of the first side, the second side and the third side of the triangular prism are located at the same horizontal position of the triangular prism, and the sensing surface of the pre...

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Abstract

The invention provides a plane point stress state detector and a detection method. The detector comprises a pedestal, a pressure sensor and a cable corresponding to the pressure sensor, wherein the pedestal is a triangular prism; the first side surface, the second side surface and the third side surface are respectively provided with an embedding groove for containing the pressure sensor, and a cable through hole extending inwards is formed in the center of each embedding groove; and an axial cable through hole is formed in the center of the triangular prism. The plane point stress state detector is simple in structure and easy to install, and the pedestal is of a triangular prism shape, so that the deflection angle is conveniently determined. Indirect measurement of the stress state of apoint on the inner plane of a material is achieved.

Description

technical field [0001] The invention relates to a foundation stress measuring instrument, in particular to a plane point stress state detector and a detection method. Background technique [0002] With the development of science and technology and the improvement of people's living standards, higher and higher standards have been put forward for the design and construction of foundation treatment. Settlement, compressive strength and other indicators have made requirements. [0003] Stress testing is an important means to understand the internal and interface bearing characteristics and failure modes of materials, such as the pressure problems of retaining walls and the stress problems of bearing foundations. The force-bearing object in the actual environment is generally a three-dimensional object, while the analysis object is often simplified into a two-dimensional problem in engineering applications. Typical examples include simplifying the thin plate into a plane stress...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L5/00
CPCG01L5/0047
Inventor 鲁先龙杨文智崔强张金龙
Owner CHINA ELECTRIC POWER RES INST
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