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

A technology of pressure temperature and internal pressure, applied in the field of automatic alarm system, can solve the problem of high construction cost and achieve the effect of improving efficiency and saving cost

Active Publication Date: 2020-01-31
SHENYANG POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

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Experimental program
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Effect test

Embodiment Construction

[0043] The system consists of three parts, that is, the steel pipe column in the deep foundation pit support system, the alarm device and the pressure and temperature double control switch installed on the steel pipe column.

[0044] Such as image 3 Shown:

[0045] The upper end of the steel pipe column 20 provides a fulcrum for the horizontal and horizontal concrete support 19 at the top, and the lower end is embedded in the foundation 24, and is welded together with the reinforcement cage inside the concrete pile.

[0046] The upper, middle and lower sides of the steel pipe column are respectively equipped with pressure and temperature double control switches. The position of each switch should first consider the length of the steel pipe column and the location of the horizontal steel support arrangement. According to the principle of horizontal steel support arrangement and referring to engineering experience, the length of the steel pipe column See the table below for th...

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Abstract

The invention relates to an automatic alarm system for multi-point control of internal pressure and temperature to prevent steel pipe columns from bursting and cracking failures, especially when steel pipe columns are used as the main component of the supporting structure system in tunnels or deep foundation pit support systems, for low temperature steel pipes in winter in northern my country The internal pressure control and temperature control automatic alarm system of the steel pipe was developed to prevent the cracking of the soil contained inside the column due to frost heave. A group of switches that can sense the internal pressure and temperature of the steel pipe are placed along the length of the steel pipe column. When a certain limit is reached, an alarm sound will be 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. In the case of soil cracking due to frost heaving, an automatic alarm system for internal pressure and temperature multi-point control of steel pipe column expansion crack failure was developed. 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 p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D17/04E02D33/00G01K1/02
CPCG01K1/024E02D17/04E02D33/00
Inventor 金生吉何丽娟赵凌宇闫常山杨崇宪
Owner SHENYANG POLYTECHNIC UNIV
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