An instrument and method for testing the concrete compressive strength of electric poles in service
A technology for compressive strength and concrete, applied in the direction of applying stable tension/pressure to test the strength of materials, etc., can solve the problems affecting the estimation results of concrete strength and the influence of test results, achieve great application and promotion value, and save manpower and time , the effect of high measurement accuracy
Active Publication Date: 2015-11-18
STATE GRID CORP OF CHINA +1
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Problems solved by technology
Since concrete is a mixed material, factors such as raw materials, mix ratio, and density have an impact on the test results. In addition, in actual testing, the corrosion of steel bars and the dense distribution of steel bars may also have a certain impact on the results of ultrasonic propagation velocity measurement, thus affecting concrete. Presumption of Strength
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[0039] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0040] Such as figure 1 As shown, an instrument for detecting the concrete compressive strength of electric poles in service includes a fixing device, a control device and a force applying device. The fixing device includes a screw, a rod head 3, a nut and a fixing table; the control device includes a displacement sensor 7, Pressure sensor 6, operating panel 8, force applying device includes hydraulic cylinder 9 and ball pressure head 10, wherein, there are two fixed tables, relatively placed on both sides of the electric pole, two screw rods, and the top fixed rod head 3, two The root screw runs through both sides of the two fixed platforms respectively, and is fixed on the fixed platform through nuts. The hydraulic cylinder 9 runs through the center line of the fixed platform I4. The displacement sensor 7 and the pressure sensor 6 are fixed between t...
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Abstract
The invention discloses a device and a method for detecting concrete compressive strength of an in-service electric pole. The device comprises a fixing device, a control device and a force application device. The fixing device comprises two screws, two screw heads, nuts and two fixing benches. The control device comprises a displacement sensor, a pressure sensor and an operation panel. The force application device comprises a hydraulic cylinder and a spherical pressure head. The two fixing benches are arranged respectively at two sides of an electric pole. The screw heads are fixed to top ends of the two screws. The two screws respectively go through two sides of the two fixing benches and are fixed to the two fixing benches by the nuts. A hydraulic cylinder goes through one of the fixing benches along the fixing bench center line. The spherical pressure head is connected to the inner side of the hydraulic cylinder and contacts with the electric pole. The displacement sensor and the pressure sensor are fixed between the hydraulic cylinder and the spherical pressure head. The operation panel is connected to the output terminal of the hydraulic cylinder. The device and method have high measurement precision and small errors, save labor and time and improve work efficiency.
Description
technical field [0001] The invention relates to the technical field of damage assessment and repair technology research on reinforced concrete poles of in-service transmission lines, in particular to an instrument and method for detecting the concrete compressive strength of in-service poles. Background technique [0002] During service, the reinforced concrete pole is subjected to various physical and chemical effects, which reduces the safety and durability of the pole. If it is not repaired in time, the service life of the pole will be shortened, and even the pole will be broken, which will affect the service life of the pole. Power operation endangers people's lives and property safety. Therefore, a timely safety and durability assessment of in-service reinforced concrete poles can provide an important basis for making decisions about pole repair, reinforcement, or replacement. [0003] Reinforced concrete poles are mainly composed of steel bars and concrete. The streng...
Claims
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IPC IPC(8): G01N3/12
Inventor 邓化凌严黔李正立赵然杭任春凤王兴菊徐月华魏泽彪官庆朔赵睿薛霞申睿
Owner STATE GRID CORP OF CHINA