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Internal pressure multi-point control automatic alarm system for steel pipe column expansion crack failure

A pressure control and multi-point control technology, applied in the direction of measuring fluid pressure, force/torque/power measuring instruments, instruments, etc., can solve the problem of high construction cost, and achieve the effect of improving efficiency and saving cost

Active Publication Date: 2020-03-03
SHENYANG POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The construction cost increased by just taking this measure is as high as more than 10 million yuan

Method used

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  • Internal pressure multi-point control automatic alarm system for steel pipe column expansion crack failure
  • Internal pressure multi-point control automatic alarm system for steel pipe column expansion crack failure
  • Internal pressure multi-point control automatic alarm system for steel pipe column expansion crack failure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0040] The system consists of three parts, namely the steel pipe column in the deep foundation pit support system, the alarm device and the pressure switch installed on the steel pipe column.

[0041] like image 3 Shown:

[0042] The upper end of the steel pipe column 20 provides a fulcrum for the horizontal and horizontal concrete support 19 on the top, and the lower end is embedded in the foundation 24, and is welded together with the reinforcement cage inside the concrete pile.

[0043] Pressure control switches are installed on the top, middle and bottom of the steel pipe column. The position of each switch should first consider the length of the steel pipe column and the position of the horizontal steel support arrangement. Refer to the table below for the installation position:

[0044] Table 1 The installation position of the pressure switch of this alarm system

[0045]

[0046] The above-mentioned pressure control switch is connected with the alarm, and the str...

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Abstract

The invention relates to an automatic alarm system developed to prevent steel pipe columns from swelling and cracking and losing their bearing capacity, especially when steel pipe columns are used as the main component of the supporting structure system in tunnels or deep foundation pit support systems. The internal pressure control automatic alarm system of the steel pipe developed for the cracking of soil containing soil due to frost heave. A group of steel pipe columns is placed along its length to sense the internal pressure of the steel pipe. When the pressure reaches a certain limit, an alarm sound is automatically issued immediately, and an alarm system equipped with colored light display realizes the automatic instant alarm function. Therefore, corresponding pre-plan measures are taken to avoid engineering accidents caused by freezing and cracking of steel pipe columns caused by sudden changes in internal pressure.

Description

technical field [0001] The invention relates to an automatic alarm system developed to prevent steel pipe columns from swelling and cracking and losing their bearing capacity, especially when steel pipe columns are used as the main component of the supporting structure system in tunnels or deep foundation pit support systems. The internal pressure control automatic alarm system of the steel pipe developed for the cracking of soil containing soil due to frost heave. Background technique [0002] Steel pipe columns are an important part of a common support structure system for urban open-cut or half-cover construction tunnels and large bridge piers or deep foundation pits of high-rise buildings. The composition of this support structure system usually includes: enclosure row piles poured by drilling before excavation of the foundation pit, steel pipe columns (or lattice columns) providing vertical support, horizontal steel pipe horizontal supports, and the enclosure The top o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08B5/38G01L19/12G01L5/00E02D17/04
CPCE02D17/04G01L5/00G01L19/12
Inventor 金生吉陈华杨崇宪闫常山赵凌宇
Owner SHENYANG POLYTECHNIC UNIV
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