CN-117536216-B - Steel flower pipe type anti-floating anchor rod assembly

CN117536216BCN 117536216 BCN117536216 BCN 117536216BCN-117536216-B

Abstract

The invention discloses a steel flower pipe type anti-floating anchor rod assembly which comprises an anchor rod body, a grouting gun and a hole sealing air bag column, wherein a plurality of groups of grouting hole groups are uniformly arranged on the outer ring surface of the anchor rod body along the circumferential direction, a plurality of positioning rods are arranged on the top of the anchor rod body along the circumferential direction, the hole sealing air bag column comprises a shell which can be inserted into the anchor rod body, a socket matched with an inserting rod is arranged at the top end of the shell, an air pressure driving assembly is arranged in the shell in a matched manner, and shaft holes communicated with the inner space of the shell are arranged on the outer side wall around the shell.

Inventors

ZHANG JIANQIANG
LI MAN
ZHANG KE
ZHANG YU
WANG JUNQING
FENG YUNFEI
ZHANG JIANCHENG
YUAN TIANJIN
WANG YINGCHENG

Assignees

中核勘察设计研究有限公司

Dates

Publication Date: 20260512
Application Date: 20231124

Claims (6)

1. The steel flower pipe type anti-floating anchor rod assembly is characterized by comprising an anchor rod body, a grouting gun and a hole sealing air bag column, wherein a plurality of groups of grouting hole groups are uniformly arranged on the outer ring surface of the anchor rod body along the circumferential direction, a plurality of positioning rods are arranged on the top of the anchor rod body along the circumference, the hole sealing air bag column comprises a shell which can be inserted into the anchor rod body, a socket matched with the inserted rod is arranged at the top end of the shell, an air pressure driving assembly is arranged in the shell in a matched manner, shaft holes communicated with the inner space of the shell are arranged on the outer side wall around the shell, the positions and the number of the shaft holes are respectively corresponding to the positions and the number of grouting holes on the anchor rod body, plugging shaft heads are axially and slidably arranged in the shaft holes, the root parts of the plugging shaft heads inwards extend into the shell and are connected with the air pressure driving assembly, and all the plugging shaft heads can be synchronously controlled to outwards slide and extend out of the shell to be inserted into the corresponding grouting holes on the anchor rod body through the air pressure driving assembly to plug the grouting holes; the grouting gun comprises a hollow grouting rod, a grouting pipe is arranged in the hollow grouting rod, the grouting pipe is connected with a grouting machine, two grouting air bag plugs are arranged at the bottom end of the hollow grouting rod along the axial interval, the two grouting air bag plugs are arranged in opposite directions, a grouting hole communicated with a grouting hole of the grouting pipe is arranged on the hollow grouting rod between the two grouting air bag plugs, when the grouting pressure between the two grouting air bag plugs is increased, the grouting air bag plugs can be pushed to generate radial expansion, the pneumatic driving assembly comprises a support column vertically arranged in the middle of the shell, a cylindrical annular air bag is sleeved on the support column in a matched mode, the plugging shaft head comprises a shaft head shell with an open tail end, a cylindrical air bag, a sleeve rod and an elastic piece, the shaft head shell is slidably arranged in the axial hole, the tail end of the shaft head shell extends inwards into the shell, the sleeve rod is arranged in the shaft head shell in a sliding mode, the tail end of the sleeve rod extends out of the shaft head shell backwards and is connected with the cylindrical annular air bag, the cylindrical air bag is arranged in the shaft head shell at the front side of the sleeve rod in a coaxial mode, a plurality of air bag openings are uniformly formed in the shaft head shell at the outer side of the front end of the cylindrical air bag along the circumference, the elastic piece is matched and sleeved on the sleeve rod at the rear side of the shaft head shell, and the sleeve rod is supported to keep not to extrude the cylindrical air bag in a natural state.
2. The steel-flower-tube-type anti-floating anchor rod assembly according to claim 1, wherein the grouting stopping air bag plug comprises an annular base and an annular plugging plate which are axially arranged on the hollow grouting at intervals, the plugging plate can axially slide along the hollow grouting rod, the hollow grouting rod between the base and the annular plugging plate is sleeved with the annular plugging air bag in a matched mode, the plugging air bag is connected with the adjacent base and the plugging plate, the base and the plugging plate are mutually far away due to air expansion in the plugging air bag, and the plugging plates of the two grouting stopping plugs are arranged in opposite directions.
3. The steel-flower-tube-type anti-floating anchor assembly according to claim 2, wherein the outer ring diameter sizes of the base, the plugging plate and the annular plugging air bag in a natural state are matched with the inner ring diameter size of the anchor rod body.
4. The steel-flower-tube anti-floating anchor assembly according to claim 1, wherein the socket comprises a socket body fixedly mounted on the top of the housing, the socket body extends out of the housing and is vertically provided with a jack matched with the positioning rod.
5. The steel-flower-tube type anti-floating anchor assembly according to claim 1, wherein the root of the plugging shaft head is connected with the outer annular surface of the cylindrical annular air bag, the air hole of the cylindrical annular air bag is connected with an air pipe, and the air pipe extends upwards to extend out of the outer shell to be connected with an air source for controlling the expansion and contraction of the cylindrical air bag.
6. The steel-flower-tube anti-floating anchor assembly of claim 1, wherein the spring support force is greater than the resistance of the axle head shell to sliding outward along the axle bore and into the grouting bore.

Description

Steel flower pipe type anti-floating anchor rod assembly Technical Field The invention belongs to the technical field of anti-floating anchors, and particularly relates to a steel flower pipe type anti-floating anchor assembly. Background The anchor rod with holes for anti-floating steel flower pipe is used in geological geotechnical engineering and is especially suitable for fast foundation pit support, emergency engineering and advanced support. The anti-floating steel flowtube anchor rod with holes is characterized in that holes with a certain number and a certain distance are formed in the outer side surface of the anti-floating steel flowtube anchor rod with holes compared with a common steel flowtube anchor rod, the anti-floating steel flowtube anchor rod with holes is used for concreting and supporting surrounding soil, a pre-prepared shell material is poured into a gap between a drill hole and an anchor rod body in the installation process, the shell material can protect the anchor rod body from being corroded by the external environment, the service life of the anchor rod body is prolonged, the adhesive force between the anchor rod body and the drill hole can be enhanced, when the segmented annular grouting is carried out from bottom to top, slurry can penetrate through holes in the anchor rod body to the surrounding soil layer to form adhesion with the soil body, the friction force and the tensile strength of the anchor rod body and the soil body are increased, but when the existing anti-floating steel flowtube anchor rod is used for pouring the slurry into the gap between the drill hole and the anchor rod body through the holes of the anchor rod body, the movement of a grouting gun head can be hindered, the grouting gun head can be prevented from being disturbed by the sealing of a grouting plug, and the grouting gun head is affected, and the grouting quality of the segmented annular grouting mass is lowered. Disclosure of Invention Aiming at the defects and problems of the existing steel floral tube anchor rod with Kong Kangfu, the invention provides a steel floral tube type anti-floating anchor rod assembly, which has a unique structure and ingenious design, and can effectively solve the problems that the shell material can enter the anchor rod body when the shell material is poured into the existing perforated anti-floating steel floral tube anchor rod, the grouting quality of sectional annular grouting is affected and the installation strength of the anchor rod is reduced. The invention solves the technical problems by adopting a scheme that the steel-flower-tube type anti-floating anchor rod assembly comprises an anchor rod body, grouting guns and hole sealing air sac columns, wherein a plurality of groups of grouting hole groups are uniformly arranged on the outer ring surface of the anchor rod body along the circumferential direction, a plurality of positioning rods are arranged on the top of the anchor rod body along the circumference, each hole sealing air sac column comprises a shell which can be inserted into the anchor rod body, a socket matched with the inserted rod is arranged at the top end of the shell, an air pressure driving assembly is arranged in the shell in a matched manner, shaft holes communicated with the inner space of the shell are arranged on the outer side wall around the shell, the positions and the number of the shaft holes respectively correspond to the positions and the number of grouting holes on the anchor rod body, plugging shaft heads are axially and slidably arranged in the shaft holes, the root parts of the plugging shaft heads extend into the shell inwards and are connected with the air pressure driving assembly, all the plugging shaft heads can be synchronously controlled to extend out of the corresponding grouting holes on the anchor rod body in a sliding manner through the air pressure driving assembly, the grouting guns comprise hollow grouting rods, a grouting pipe is arranged at the top end of the hollow grouting rod, a grouting pipe is connected with a grouting supply pipe, grouting plug is arranged in the hollow grouting machine, when grouting pipe is connected with two grouting air bags, grouting plugs are radially arranged between two grouting air bags, and two grouting air bags are radially arranged between two grouting plugs, and each grouting air bags are connected with two grouting air bags, and each grouting air sealing plug is provided with a grouting stop plug. The grouting stopper comprises an annular base and an annular plugging plate which are arranged on the hollow grouting along the axial direction at intervals, the plugging plate can slide along the axial direction of the hollow grouting rod, an annular plugging air bag is sleeved on the hollow grouting rod between the base and the annular plugging plate in a matched mode, the plugging air bag is connected with the adjacent base and the plugging plate, the air expansion is injected in