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Multi-layer spiral blade self-drilling-type soil anchor rod and constructing method thereof

A helical blade, self-drilling technology, applied in the direction of foundation structure engineering, sheet pile walls, protective devices, etc., can solve the problems of small anchorage contact area, difficulty in drilling into the soil layer, insufficient pull-out resistance, etc., to improve construction quality, The effect of reducing the difficulty of drilling and shortening the construction period

Active Publication Date: 2014-11-12
WUDA JUCHENG STRUCTURE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the device is single, it is difficult to drill into the soil layer, and the anchoring contact area is small, and the pullout resistance is insufficient

Method used

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  • Multi-layer spiral blade self-drilling-type soil anchor rod and constructing method thereof
  • Multi-layer spiral blade self-drilling-type soil anchor rod and constructing method thereof

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Embodiment Construction

[0024] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0025] see figure 1 , figure 2 , a multi-layer spiral blade self-drilling soil bolt of the present invention, comprising a front end bolt body 1, the front end of the front end bolt body 1 is a closed conical shape, and the outer portion of the front end bolt body 1 near the drill tip A front-end helical blade 4-1 is arranged on the surface, and a slurry outlet 5 is provided on the side wall of the front-end anchor rod body 1 near the front-end helical blade 4-1, and the other end of the front-end anchor rod body 1 is connected to the One end of the middle anchor rod body 2 is connected, the other end of the middle anchor rod body 2 is connected with one end of the lengthened anchor rod 8 through the connecting sleeve 7, the middle anchor rod body 2 is two or more, and the middle anchor rod body 2 A helical blade 4-2 is arranged on...

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Abstract

The invention provides a multi-layer spiral blade self-drilling-type soil anchor rod and a constructing method of the anchor rod. The anchor rod comprises a front end anchor rod body (1), the outer surface of the end, close to the drill point, of the front end anchor rod body (1) is provided with front end spiral blades (4-1), grouting holes (5) are formed in the portion, near the front end spiral blades (4-1), of the side wall of the front end anchor rod body (1), the other end of the front end anchor rod body (1) is connected with one end of a middle-segment anchor rod body (2) through a thread connecting portion (6), the other end of the middle-segment anchor rod body (2) is connected with one end of a lengthened anchor rod (8) through a connecting sleeve (7), and spiral blades (4-2) are arranged on the outer surface of the middle-segment anchor rod body (2). The anchor rod is reasonable in structure, the blades have strong penetrating power in soft soil areas, the constructing technology is safe and reliable, the contact area is increased, the anchoring force is enhanced, the constructing efficiency and the constructing quality are improved, and it is guaranteed that the pulling resistance of the anchor rod in different soil layers can be improved more effectively.

Description

technical field [0001] The invention relates to an anchor rod and a construction method thereof, in particular to a multi-layer spiral blade self-drilling soil anchor rod and a construction method thereof, belonging to the technical field of drilling and anchoring. Background technique [0002] For buildings or structures buried in the basements of buildings with high groundwater levels, such as subways, underground shopping malls, civil air defense fortifications, large pools, and wave-dispelling pools at the bottom of dams, they must not only bear the weight of the structure, but also bear the impact caused by the high groundwater level. buoyancy on the bottom of the pit. When the buoyancy force is large enough to overcome the weight of the structure, floating, tilting or damage will occur, so the harmful vertical displacement caused by buoyancy must be effectively controlled in the structural design. [0003] At present, the anti-floating design is widely used in enginee...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/80E02D31/12
Inventor 高作平周剑波张畅高杰
Owner WUDA JUCHENG STRUCTURE CO LTD
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