High strain detection device

Abstract

The invention discloses a high strain detection device which comprises a detection hammer and a to-be-detected pile; the top of the detection hammer is fixedly connected with a horizontal hanging plate; the hanging plate is hung on a hanging mechanism; the hanging mechanism comprises two sliding plates capable of moving in opposite directions; the lower ends of the two sliding plates are providedwith horizontal supporting parts; the upper ends of the two sliding plates are slidably connected with a steel beam; the hanging plate is located between the horizontal supporting part and the steel beam; a hanging rope is connected with the top of the steel beam; a jack is arranged between the two sliding plates; each sliding plate is connected with an infrared receiving switch through a first telescopic mechanism; the two sides of the to-be-detected pile are respectively connected with an infrared emitter through a second telescoping mechanism; and the infrared emitters are corresponding tothe infrared receiving switches. High strain detection is realized, the centering of the detection hammer and the to-be-detected pile can be greatly guaranteed, the eccentricity of the to-be-detectedpile is prevented from being damaged, and the accuracy of detection data is improved.

Description

technical field [0001] The invention relates to the technical field of strain detection devices, in particular to a high strain detection device. Background technique [0002] The foundation is the main component of a construction project. The quality of the foundation directly affects the safety of the entire building, and the pile foundation is one of the main foundation forms. With the popularization of high-rise buildings, buildings with different structures and layers and underground The development and utilization of space is becoming more and more extensive. Pile foundations are the first choice or necessary foundation form for many high-rise buildings, and the test of the single pile bearing capacity of pile foundations is one of the important guarantees to ensure the concealed engineering of pile foundations. High strain testing combined with low The functions of strain detection and static load test can not only detect the integrity of the pile foundation, but also...

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Problems solved by technology

[0003] However, there are still great shortcomings in the actual engineering application of high-strain detection at present. In the actual detection, the center position of the detection hammer and the position of the pile center are mostly only relying on human observation, and it is impossible to ensure that the detection hammer falls on the pile center position, resulting in The eccentric force on the pile will damage the quality of the pile body or make the pile tilt, and the eccentric detection hammer will easily fall from the pile head and hit other things and people nearby, causing other problems; although some places also use guide frames for deflection correction, the guide The following problems still exist in the frame: 1. Due to the limitation of the site terrain, some places cannot use the guide frame; 2. When setting up the guide frame, a crane needs to be used to move and adjust the position, and the actual operation is time-consuming and expensive; 3. The accuracy of the guide frame Not enough, there are errors; 4. The production and transportation costs of the guide frame are relatively high

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