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Device and method for measuring lifting height of underwater concrete surface

An underwater concrete and measuring device technology, applied in buoy liquid level indicators, construction, infrastructure engineering and other directions, can solve problems such as difficulty, broken piles, broken walls, etc., to achieve the effect of ensuring the quality of the project

Inactive Publication Date: 2014-10-22
GEZHOUBA GROUP FOUND ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For ultra-deep underground diaphragm walls (cast-in-situ piles), due to the long pouring time, especially in the final pouring stage, the sediment is getting thicker and thicker. It is more and more difficult to reach the concrete level, which often leads to misjudgment, causing accidents such as "broken wall" and "broken pile", which directly affects the engineering quality of the underground diaphragm wall (cast-in-situ pile)

Method used

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  • Device and method for measuring lifting height of underwater concrete surface
  • Device and method for measuring lifting height of underwater concrete surface
  • Device and method for measuring lifting height of underwater concrete surface

Examples

Experimental program
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Embodiment 1

[0024] Such as Figure 1~2 Among them, a device for measuring the rising height of the underwater concrete surface, including a measuring rope 1, the lower end of the measuring rope 1 is connected with the counterweight 2, the bottom of the counterweight 2 is fixedly connected with the pumping tube 4, and the bottom of the pumping tube 4 is provided with an upward opening Check valve 5. Preferably, the drawer 4 is connected to the counterweight 2 through a plurality of steel bars 3 . The valve ring is welded at the lower end of the pumping tube 4, and an upwardly opened check valve 5 is installed on the valve ring, so that the sediment 6 and concrete 7 can only enter the pumping tube 4 and cannot be discharged.

[0025] Preferably, the inner diameter of the pumping cylinder 4 is 90-110 mm. The pumping cylinder 4 diameter that adopts in this example is 91mm.

Embodiment 2

[0027] A kind of method adopting measuring device described in embodiment 1 to measure the rise height of underwater concrete surface may further comprise the steps:

[0028] 1. When measuring the rising height of the concrete surface in the slot 8, put the measuring device into the slot 8;

[0029] Two, after described measuring device enters sediment 6, because the density of sediment 6 is bigger, measuring device can be hindered and stop;

[0030] 3. Repeatedly lift and lower the measuring device, the lifting and lowering height is about 0.5m, during the lifting and lowering process, the check valve 5 at the lower end of the pumping tube is continuously opened and closed;

[0031] 4. Due to the good workability and fluidity of the sediment 6 and concrete 7, when the measuring device is lowered, the sediment 6 or concrete 7 enters the pumping tube 4 through the check valve 5, and when the measuring device is lifted up, the bottom of the pumping tube 4 The check valve 5 of t...

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Abstract

The invention discloses a device for measuring the lifting height of an underwater concrete surface. The device comprises a measuring rope, wherein the lower end of the measuring rope is connected to a balance weight, the bottom of the balance weight is fixedly connected to a draw tube, and the bottom of the draw tube is provided with a check valve that opens upwards. The method for measuring the lifting height of the underwater concrete surface by using the above measuring device comprises the following steps: placing the measuring device into a groove hole; repeatedly lifting up and placing down the measuring device to allow sediment or concrete to remain in the draw tube; taking out the measuring device, judging whether the measuring device enters the concrete through observing matter in the draw tube, and then determining the lifting height of the surface of the concrete in the groove hole according to the scale of the measuring rope; thus completing measurement of the lifting height of the underwater concrete surface. The device and the method for measuring the lifting height of the underwater concrete surface can be used for accurately and inerrably determining the lifting height of the surface of the concrete in the groove hole, directing the pulling of a pouring pipe, and preventing an underground diaphragm wall (a filling pile) from breaking or having other accidents, thus ensuring project quality.

Description

technical field [0001] The invention relates to the field of measuring the underwater concrete surface in a slot hole of an underground continuous wall (cast-in-place pile), in particular to a device and a method for measuring the rising height of the underwater concrete surface. Background technique [0002] At present, when performing underwater concrete pouring in slot holes of underground diaphragm walls (cast-in-place piles), a “measuring hammer” or “measuring cake” is generally used to measure the rising height of the concrete surface in the slot holes to guide the lifting of the pouring conduit. [0003] When measuring, the operator puts the "hammer" or "cake" into the slot, lifts and lowers the "hammer" or "cake", and judges whether the "hammer" or "cake" has reached the concrete by feeling level, and then determine the rising height of the concrete surface according to the scale on the measuring rope, so as to guide the lifting of the pouring conduit. [0004] In t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F23/76G01F23/42E02D15/06
Inventor 周昌茂张玉莉石艳军何英管水波白家安李小勇
Owner GEZHOUBA GROUP FOUND ENG