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A method for monitoring deep foundation subsidence

A technology of settlement monitoring and foundation, applied in the direction of hydrostatic pressure, etc., can solve the problems of deformation and damage of buried pipes, easy damage of settlement monitoring pipes, and inability to measure, so as to achieve the effect of improving construction efficiency

Active Publication Date: 2011-12-21
上海同禾工程科技股份有限公司
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Problems solved by technology

The previous foundation settlement testing methods can be roughly divided into two categories. One is the vertical borehole pre-buried tube measurement, which has the advantages of simple structure and low cost, but its accuracy is low, and the settlement monitoring tube is easily damaged during the construction process. not measurable
The other type is the cross-section buried pipe method, which measures the inclination angle indirectly, which has the advantage of high precision, but it is also easy to deform and damage the buried pipe during the construction process, resulting in inability to measure

Method used

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  • A method for monitoring deep foundation subsidence
  • A method for monitoring deep foundation subsidence
  • A method for monitoring deep foundation subsidence

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Embodiment approach

[0032] The present invention adopts liquid level static pressure monitoring method implementation scheme as follows:

[0033] On the datum plane 3 which is not affected by the construction settlement, a datum container 5 is placed, and its installation height is higher than that of any embedded settlement instrument. Before the construction of the foundation 14, the container 5 is interconnected with all the settlement monitors 9 with the liquid pipeline 6, and the measurement and control system 8 is connected with all the settlement monitors 9 with the serial bus. After that, the subsidence monitor 9 is shallowly buried on the foundation, and liquid 4 (which can be water, antifreeze, etc.) is injected into the container 5 through the water inlet 11 until the valve 10 overflows, thereby squeezing out all the gas in the pipeline 6 . At this point, close the valve and continue to inject liquid until it exceeds 50% to 80% of the capacity of the reference container 5 .

[0034]Be...

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Abstract

The invention relates to a method for monitoring the deep settlement of a foundation, which is characterized in that: a liquid level static pressure monitoring method is adopted; in the liquid level static pressure monitoring method, a container provided with a pressure sensor and a secondary instrument is adopted, taken as a pressure measuring reference container and fixed on the ground which isnot influenced by the foundation settlement; the height of a pressure sensing surface of the pressure sensor is greater than that of any one embedded settlement instrument; the embedded settlement instrument consists of a shell, a three-way joint, a pressure sensor, a secondary instrument circuit and a serial bus circuit and is electrically connected with other embedded settlement instruments anda ground measurement and control system through an electric serial bus; and the measurement and control system records a pressure value of each detection point, converts the pressure value into a foundation settlement value, and performs curve fitting to obtain a foundation section settlement outline.

Description

technical field [0001] The invention relates to a monitoring method for foundation settlement, in particular discloses a method for monitoring deep foundation settlement, which belongs to the field of civil engineering. Background technique [0002] Construction on the ground, such as buildings, highways, dams, etc., will cause foundation settlement. The previous foundation settlement testing methods can be roughly divided into two categories. One is the vertical borehole pre-buried tube measurement, which has the advantages of simple structure and low cost, but its accuracy is low, and the settlement monitoring tube is easily damaged during the construction process. not measurable. The other type is the cross-section buried pipe type. The method of indirect measurement of the inclination angle has the advantage of high precision, but it is also easy to deform and damage the buried pipe during the construction process, resulting in failure to measure. Contents of the inve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C5/04
Inventor 姚鸿梁钟小滨方红发宋爽
Owner 上海同禾工程科技股份有限公司
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