Multi-segment expanding thin-walled anchor pipe structure and construction method
A technology of anchor pipe and wall anchor, which is applied in the direction of foundation structure engineering, excavation, sheet pile wall, etc., can solve the problems of untimely reinforcement and insufficient grouting of anchor pipes, etc., achieve good benefits, large construction space, and save grouting material effect
Inactive Publication Date: 2016-01-20
HOHAI UNIV
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[0003] The purpose of the present invention is to propose a multi-segment enlarged thin-walled anchor pipe structure and construction method, which adopts the physical and mechanical occlusal method to anchor the anchor pipe, so as to solve the problem that the anchor pipe is not fully grouted and cannot be reinforced in time
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[0024] A multi-segment enlarged thin-walled anchor pipe, comprising: a hydraulic expansion head 1 and a metal thin-walled anchor pipe 7.
[0025] The hydraulic enlarging machine head 1 comprises a blunt conical head 2 at the front, 4 guide rail grooves, 4 hydraulic top support caps 3, an oil inlet pipeline 5, and an oil outlet pipeline 6. The front blunt conical head 2 is located at the front end of the hydraulic expansion head 1 to guide the hydraulic expansion head 1 to advance; the side of the hydraulic expansion head 1 is evenly distributed with 4 guide rail grooves, which cooperate with the guide rails inside the metal thin-walled anchor pipe 7, so that The hydraulically enlarged machine head 1 can keep a fixed posture and move forward and backward; the four hydraulic jacking caps 3 can be ejected radially through hydraulic force, and the metal thin-walled anchor pipe 7 can be ejected outward by four convex points. The surrounding soil occludes each other to apply anchori...
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The invention provides a multi-segment expanding thin-walled anchor pipe structure and construction method. The whole structure of the device is composed of a hydraulic expanding handpiece and a metal thin-walled anchor pipe. The method is different from an ordinary anchoring method, the hydraulic expanding handpiece is used for expanding the anchor pipe by segments, multiple protruding points are formed in the metal thin-walled anchor pipe in a jacking mode, connection between soil bodies is enhanced through the action of physical clamping and mortising to achieve the anchoring effect, the method can be applied to temporary or semi-permanent anchoring engineering, and the construction efficiency is improved greatly. The device is used for temporary or semi-permanent slope excavating and supporting engineering. The structure is high in automation degree, operation is easy and convenient, and the construction efficiency is high.
Description
technical field [0001] The invention relates to a multi-section enlarged thin-walled anchor pipe structure and construction method, which is cost-saving, shortened construction period, and environmentally friendly equipment for slope excavation and support projects. The utility model has high construction efficiency and belongs to related technical fields such as geotechnical engineering and environmental engineering. Background technique [0002] With the development of the city, the use of underground space is increasing. Due to the high technical requirements and high cost of non-excavation engineering, foundation pit excavation is a relatively common method for developing underground space at present. However, in many areas, especially in the coastal areas, the soil quality is poor, which brings difficulties to the construction. The slope stability of foundation pit excavation is particularly important. There are various forms of excavation and support for foundation p...
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Login to View More IPC IPC(8): E02D5/74E02D17/04E02D17/20
Inventor 周源高玉峰张飞张凌云郭枫陈欣刘成王军肖伟
Owner HOHAI UNIV