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Suspended measuring method of stake inner displacement and the device

A technology of displacement and measurement, applied in the direction of measuring devices, instruments, etc., can solve the problems of complex process, large error transmission of multi-stage superposition, less use, etc., and achieve the effect of reducing cost and high measurement accuracy

Inactive Publication Date: 2008-12-17
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Obviously, due to the inherent characteristics of the method, the displacement of each section needs to be included in the influence of the sensor measurement error, and the error transmission of multi-section superposition is larger; in addition, the process is relatively complicated and the cost of materials is high. The measurement has been improved, but it is rarely used in China, and the traditional one-section rigid rod test method is still used

Method used

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  • Suspended measuring method of stake inner displacement and the device
  • Suspended measuring method of stake inner displacement and the device
  • Suspended measuring method of stake inner displacement and the device

Examples

Experimental program
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Effect test

Embodiment 1

[0022] A suspension measurement method for internal displacement of a pile, the method comprising the following steps:

[0023] 1. A joint device 4 is set in the protective pipe 2,

[0024] ②Pre-embed the protective pipe 2 in the pile 1,

[0025] ③A fixing device 3 is set at one end of the flexible line 5, and the fixing device 3 is put into the protective tube 2, so that the fixing device 3 is fixed on the joint device 4,

[0026] ④Walk the other end of the flexible line 5 around the fixed pulley 6, and set a weight 7 at this end,

[0027] ⑤ Apply force to pile 1,

[0028] ⑥ Measure the displacement of the flexible wire 5 .

Embodiment 2

[0030] A suspension measuring device for internal displacement of a pile body, comprising a protective tube 2, a joint device 4 is arranged in the protective tube 2, the measuring device includes a fixed pulley 6 and a flexible line 5, and one end of the flexible line 5 is provided with The other end of the fixture 3 is provided with a weight 7, and the flexible wire 5 is wound on the fixed pulley 6. In this embodiment, the flexible wire 5 is a steel wire, the joint device 4 is a rectangular slot, and the fixture 3 includes a columnar The base body 31 and the support rod 9 spliced ​​on the columnar base body 31 are provided with lead wires on the support rod 9, and the support rod 9 is in a folded state when it is put into the protective tube. When drawing in the slot, the lead wire is pulled, and now the support rod 9 is opened, and can be fixed on joint devices 4 such as the rectangular drawing in slot.

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Abstract

The invention discloses a suspension measuring method for the internal displacement of post and a relative device, comprising a protective tube (2) in which a connector (4) is arranged, wherein the measuring device comprises a fixed block (6) and a flexible line (5), while one end of the flexible line (5) is arranged with a fixing device (3) in the connector (4), and another end is arranged with a weight (7), the flexible line (5) is coiled on the fixed block (6). The invention arranges the connector in the protective tube, uses the flexible line to slowly arrange the fixing device at the end of the flexible line into the protective tube, and fixes the fixing device on the connector, with the advantages in the internal displacement measurement of post longer than 50m.

Description

technical field [0001] The invention relates to a method for measuring the internal displacement of a pile body and a device thereof, in particular to a method for measuring the internal displacement of a pile body by suspension and a device thereof. Background technique [0002] At present, the internal displacement measurement of the pile body at home and abroad is to place a rigid rod at the measured displacement, extend the rigid rod to the ground, and arrange a displacement sensor on the top of the rod to measure the displacement. This method has been widely used since its use. However, as the bored piles become longer and longer, sometimes even exceeding 100m, the pile method begins to show its defects. The rigid rods are bent due to various reasons, resulting in obvious distortion in the displacement transmission process. At present, the improvement method in foreign countries is to adopt the rigid rod relay transmission method. It is believed that the length of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B21/02
Inventor 龚维明戴国亮
Owner SOUTHEAST UNIV