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A suction anchor device

A rod device, suction anchor technology, applied in construction, excavation, infrastructure engineering and other directions, can solve the problems of increased safety risk, small total resistance, high water content, improve stability and safety, increase anchor rod Side friction resistance, the effect of improving the side friction resistance of the bolt

Active Publication Date: 2022-07-22
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the geological conditions are poor, such as saturated soft clay, its water content is high, its strength is low, and its friction coefficient is small, so the total resistance provided is often small, while the traditional way to increase the total anchor bolt by increasing the end area Resistance measures have the disadvantages of low efficiency and high cost
Especially in the case of emergency engineering, it often cannot meet the requirements of fast and efficient, increasing safety risks
At the same time, the traditional method of increasing the contact area at the end to increase the bearing capacity of the anchor makes the structure of the anchor more complicated and brings great inconvenience to the construction.

Method used

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Embodiment Construction

[0019] Referring to the drawings, a suction anchor rod device includes a hollow cylindrical anchor rod 4, the bottom port of the anchor rod 4 is sealed, and the top port of the anchor rod 4 is equipped with a sealing cover plate 1, and the sealing cover plate 1 and the The anchor rod 4 is detachably connected; a section of the anchor rod 4 close to the bottom port is defined as the bottom section, the end close to the top port is the top section, and a number of sieve holes 8 are distributed on the side wall of the bottom section of the anchor rod 4, The sieve hole 8 is communicated with the inner cavity of the anchor rod 4; the anchor rod 4 is provided with a lifting plate 9, and the lifting plate 9 can be moved up and down along the axial direction of the anchor rod 4 through the lifting device and is arranged on the anchor rod 4. and the lifting plate 9 divides the inner cavity of the anchor rod 4 into an upper cavity a and a lower cavity b, and it is defined that the upper ...

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Abstract

A suction anchor rod device comprises a hollow cylindrical anchor rod, the bottom port of the anchor rod is sealed, the top port of the anchor rod is provided with a sealing cover plate, and the sealing cover plate and the anchor rod are detachably connected; One section is the bottom section, and the end near the top port is the top section. There are several sieve holes distributed on the side wall of the bottom section of the anchor rod, and the screen holes are communicated with the inner cavity of the anchor rod; The lifting device can move up and down along the axial direction of the anchor rod and is arranged in the anchor rod, and the lifting plate divides the inner cavity of the anchor rod into an upper cavity and a lower cavity, and it is defined that the upper cavity includes the top opening, and the bottom opening is the upper cavity. The lower chamber; also includes a pressure measuring device for detecting the air pressure in the lower chamber and a pressure regulating device for adjusting the air pressure in the lower chamber. The invention utilizes the principle of effective stress, and under the condition of a certain total stress, the effective stress is increased by reducing the excess pore pressure, thereby increasing the side friction resistance of the anchor rod, so as to improve the overall stability and safety.

Description

technical field [0001] The invention relates to a suction anchor rod device. Background technique [0002] Anchor rods are widely used in projects such as slopes, foundation pit support, foundation pit anti-uplift or building anti-floating projects. , so that the whole remains safe and stable. Therefore, bolts are usually embedded in soil layers with better geological conditions. However, when the geological conditions are poor, such as saturated soft clay, the water content is high, the strength is low, and the friction coefficient is small, and the total resistance provided is often small. The measures of resistance have the defects of low efficiency and high cost. Especially in the case of engineering emergency, it is often unable to meet the requirements of fast and efficient, increasing the safety risk. At the same time, the traditional method of increasing the contact area of ​​the end to improve the bearing capacity of the anchor rod makes the structure of the anc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D5/74E02D17/20
CPCE02D5/74E02D17/20
Inventor 胡敏云陈小雨张勇肖斌周培娇潘丽东
Owner ZHEJIANG UNIV OF TECH
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