Internal force measuring sensor

Abstract

The invention discloses an internal force measuring sensor. X, y and z axes are set by taking the center of a mounting bedplate as an original point, the internal force measuring sensor comprises a substrate, the mounting bedplate, two groups of plane dynamometry structures, vertical dynamometry structures of at least four vertical dynamometry links, and a plurality of connecting pieces, wherein the mounting bedplate is arranged above the substrate, one group of plane dynamometry structures are positioned at any one of two sides where the substrate is perpendicular to the xoz plane, the other group of plane dynamometry structures are positioned at any one of two sides where the substrate is perpendicular to the yoz plane, one ends of the two groups of plane dynamometry structures are fixedly arranged on the substrate, the other ends of the two groups of plane dynamometry structures are connected with the mounting bedplate by the connecting pieces positioned on the side wall of the mounting bedplate, the vertical dynamometry links are provided with a plurality of strain sheets, and two ends of the strain sheets are connected with the substrate and the mounting bedplate by the connecting pieces. The substrate of the internal force measuring sensor is connected with a foundation, the mounting bedplate and an upper structure are connected, the internal force from the section of a cylinder bottom is transmitted to the sensor through the mounting bedplate, the force transmission path is clear, thus providing a basis for the comparison of nonlinear analysis of the structure on the internal force level.

Description

technical field [0001] The invention belongs to the field of civil engineering, is applied to various structural tests such as frame structures and frame-shear walls, and relates to an internal force measurement sensor capable of measuring the axial force, bending moment and shear force of a column bottom section. Background technique [0002] Traditional concrete structure tests are generally limited to the observation of physical quantities such as strain, displacement (including linear displacement and angular displacement), velocity and acceleration. Taking the monotonic static pushover test of a reinforced concrete frame structure as an example, the main test results are the load-displacement curve (P-Δ curve) of the structure and the strain and rotation angle measurement results on the key sections, and because the strain measurement results are often limited to In the linear elastic stress stage of the material, therefore, the verification of the correctness of the no...

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Problems solved by technology

In fact, a simple analysis shows that this kind of verification at the macro level cannot guarantee the consistency between the theoretical analysis and the test obje

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