Device for monitoring multi-dimensional stress and strain in reinforced concrete member and installation method
A technology for reinforced concrete and reinforced concrete beams, which is applied in the field of devices for monitoring multidimensional stress and strain inside reinforced concrete members, which can solve the problems that the device cannot meet the actual needs of reinforced concrete projects, and cannot monitor the multidimensional stress and strain of reinforced concrete members in real time. The fixing method is simple and feasible, the cost is low, and the effect of wide measurement range
Active Publication Date: 2021-05-14
BEIJING UNIV OF TECH
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Problems solved by technology
[0008] In order to solve the problem that existing devices cannot meet the actual needs of reinforced concrete projects, the present invention proposes a device and installation method for monitoring multidimensional stress and strain inside reinforced concrete members
The invention has the advantages of simple installation, accurate measurement, and does not affect the material performance of reinforced concrete internal components, and provides a new solution for solving the problem that existing devices cannot monitor multi-dimensional stress and strain inside reinforced concrete components in real time
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[0043] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the implementation of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.
[0044] This device needs to be fixed when binding steel bars, and the operation is simple; the rod flower (11) and the high-strength pressure box (3) are the working systems of the device. The rod flower (11) is composed of a plurality of vertical flexible attachment rods (2) arranged in a plane; the high-strength pressure box (3) is fixed above the flexible attachment rods (2). The size of the strain gauge (4) is smaller than the surface size of the flexible attachment rod (2); the surface of the flexible attachment rod (5) is roughened, so that the flexible attachment rod (5) is closely bonded to the concrete. The strain gage (4) is pasted on the flexible attachme...
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The invention discloses a device for monitoring multi-dimensional stress strain and strain in a reinforced concrete member and an installation method. The device comprises high-strength pressure box sensing lines, flexible attachment rods, a high-strength pressure box, strain gauges, sensitive grids, strain gauge sensing lines, pressure box positioning clamps, hydrolysis supports, connecting steel bar protrusions, a hydrolysis box, strain rosettes, shear wall longitudinal bars, shear wall horizontal bars, reinforced concrete column stirrups, reinforced concrete column longitudinal bars, reinforced concrete beam longitudinal bars, reinforced concrete beam waist bars and reinforced concrete beam stirrups. And the steel bars are fixed during binding, and the operation is simple. The high-strength pressure box is fixed above the flexible attachment rods, and the high-strength pressure box and the strain rosette form the device for monitoring the multi-dimensional stress strain in the reinforced concrete. The high-strength pressure box and strain gauge sensing line leading-out part are coated with organic silicon adhesive glue for water prevention and heat insulation, so that the sensing lines are prevented from being damaged by heat release in the concrete hydration process. The high-strength pressure box sensing lines and the strain gauge sensing lines should be ensured to be long enough.
Description
technical field [0001] The invention belongs to the field of mechanical performance monitoring of reinforced concrete components, and in particular relates to a device and an installation method for monitoring multidimensional stress and strain inside reinforced concrete components. Background technique [0002] Reinforced concrete component monitoring is a technology to obtain structural response and environmental parameters in real time. Through structural analysis and actual monitoring data comparison, the rapid detection, identification and evaluation of reinforced concrete component damage can be realized. The damage of reinforced concrete components is caused by environmental effects, such as strong winds, earthquakes and uneven foundation settlement, artificial damage or long-term accumulation of fatigue. Therefore, it is particularly important to monitor the internal stress and strain of reinforced concrete members in real time and evaluate the reinforced concrete me...
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IPC IPC(8): G01D21/02
CPCG01D21/02
Inventor 王峥何浩祥陈旺高翔
Owner BEIJING UNIV OF TECH