Anchor rod structure for heating curing soil body and using method thereof

A technology of heating, curing and bolting, which is used in infrastructure engineering, soil protection, sheet pile walls, etc., can solve the problems of limited frictional strength, reduced tensile force, and increased difficulty in drilling and bolting construction. Bearing capacity, the effect of increasing the bearing capacity of the bolt and reducing the length of the bolt

Pending Publication Date: 2019-08-02
北京爱地地质工程技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The above-mentioned existing technical solutions have the following defects: but the friction strength between the anchor rod body and the soil is limited, especially when encountering saturated viscous weak soil, the pulling force of the anchor rod will be reduced. At this time, in order to improve The tension of the anchor often needs to be set very long to meet the requirements. Extending the anchor often increases the difficulty of drilling and the construction of the anchor

Method used

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  • Anchor rod structure for heating curing soil body and using method thereof
  • Anchor rod structure for heating curing soil body and using method thereof

Examples

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Effect test

Embodiment 1

[0038] refer to figure 1 with figure 2 , is a kind of anchor structure with heating and curing soil disclosed by the present invention, which includes an anchor rod 1. According to the different forces of each part of the anchor rod 1, the anchor rod 1 includes an anchoring section 11 and a free section 12, and the anchor rod 1 is a threaded steel bar , low cost of threaded steel bars, easy to buy, easy to use. An electric heating tube 2 is arranged on the anchoring section 11. The electric heating tube 2 is a stainless steel electric heating tube. The heating temperature of the electric heating tube 2 is not lower than 300°C. Above, anchor nuts 3 are screwed on both ends of the electric heating tube 2 on the anchor rod 1 , and the two anchor nuts 3 clamp and fix the electric heating tube 2 on the anchoring section 11 . By setting the electric heating tube 2 on the anchoring section 11, inserting the anchor rod 1 into the borehole, leading the two ends of the electric heati...

Embodiment 2

[0043] The difference from Embodiment 1 is that the anchor rod is an anchor cable, and the anchor cable is covered with an anchor cable bracket, and the electric heating tube is wound on the anchor cable, and the electric heating tube is located between two adjacent anchor cable brackets. The cable bracket clamps and fixes the electric heating tube, and the wire is led out of the drill hole along the anchor cable to connect with the external power supply.

Embodiment 3

[0045] The present invention provides a heat-solidified soil anchor structure and its use method, comprising the following steps:

[0046] S1. According to the site geological survey, select the appropriate length of the electric heating tube 2, set the spiral electric heating tube 2 on the anchor section 11, then set the anchor nuts 3 from both ends of the anchor rod 1, and screw the anchor nuts 3, Two anchor nuts 3 are used to clamp and fix the electric heating tube 2 .

[0047] S2. Insert the anchor rod 1 into the drill hole, and at the same time lead the wire 4 out of the drill hole through the through slot 31 along the length direction of the anchor rod 1, and connect the wire 4 to an external 220v power supply;

[0048]S3. Grouting into the borehole to form a bolt body. After the cement of the bolt body 1 is initially set, the external power supply is connected, and the electric heating tube 2 heats the surrounding soil. The heating time is 2 hours, and the electric heat...

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Abstract

The invention relates to an anchor rod structure for heating curing soil body. The anchor rod structure comprises an anchor rod, the anchor rod comprises an anchoring section and a free section, the anchoring section is provided with an electric heating pipe, the anchor rod is inserted into a drilled hole and abuts against the inner wall of the drilled hole, and the two ends of the electric heating pipe are connected with an external power source through wires. Soil around the anchoring section in the drilled hole is heated through the heating pipe, water in the surrounding soil is gasified and transported, a soil body structure is physically and chemically changed, the bearing capacity of the soil body is increased, the surrounding soil body and the anchor rod body form an anchoring lumpwith a larger diameter, and therefore the bearing capacity effect of the anchor rod is improved; and the anchor rod structure has the advantages that the soil body strength of an anchoring section isimproved, the bearing capacity of the anchor rod is improved, and the length of the anchor rod is reduced.

Description

technical field [0001] The invention relates to the technical field of geotechnical engineering, in particular to a structure with a heat-solidified soil anchor and a method for using the same. Background technique [0002] In the construction of deep foundation pits and slopes in modern construction projects, in order to ensure the structural stability of slope protection, temporary or permanent support structures are often required. As a tensile structure, bolt support is widely used in foundation Pit and slope support fields. [0003] The existing anchor rod or prestressed anchor cable support mainly provides tension through the friction force generated between the anchor rod body and the soil formed by grouting in the borehole. [0004] The above-mentioned existing technical solutions have the following defects: but the friction strength between the anchor rod body and the soil is limited, especially when encountering saturated viscous weak soil, the pulling force of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/74E02D5/76E02D3/11
CPCE02D5/74E02D5/76E02D3/11E02D2600/30
Inventor 魏尚军
Owner 北京爱地地质工程技术有限公司
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