CN-224228113-U - Cross anchoring piece for thin-wall structure

CN224228113UCN 224228113 UCN224228113 UCN 224228113UCN-224228113-U

Abstract

The utility model discloses a cross-type anchoring piece for a thin-wall structure, which comprises an anchoring plate, a plurality of wedge-shaped clamping blocks and a bearing body, wherein the anchoring plate is provided with a plurality of groups of anchoring holes which are arranged in a crossing manner, the wedge-shaped clamping blocks are respectively arranged in the plurality of groups of anchoring holes, the bearing body is in contact with one end face of the anchoring plate, the bearing body is provided with a cavity for one ends of a plurality of prestressing tendons to pass through, the other ends of the prestressing tendons respectively pass through the plurality of wedge-shaped clamping blocks, and in the tensioning process, the anchoring holes are matched with the wedge-shaped clamping blocks, and radial extrusion force is applied to the wedge-shaped clamping blocks through the hole wall. The utility model has simple structure, the plurality of anchor holes on the anchor plate are arranged in a cross arrangement mode, compared with the traditional in-line arrangement, the cross arrangement obviously shortens the distribution range of the horn holes along the length direction, improves the convenience of installation and construction, in addition, the cross type anchor holes are arranged, reduces the angle of the prestress rib, reduces the stress loss and potential safety hazard, and is more suitable for the construction requirement of a prestress anchor system in a concrete thin-wall structure.

Inventors

ZHOU LIANG
ZHONG ZHIQIANG
XU HAO
ZHU XUPING
KONG WEIPENG
JIANG SHOUHUI
Bao Zitong

Assignees

安徽金星预应力工程技术有限公司

Dates

Publication Date: 20260512
Application Date: 20250521

Claims (8)

1. A cross-type anchor for a thin-walled structure, comprising: The anchoring plate is provided with a plurality of groups of anchoring holes which are distributed in a crossing way; a plurality of wedge-shaped clamping blocks respectively arranged in the plurality of groups of anchoring holes and The bearing body is in contact with one end face of the anchoring plate, a cavity for one ends of the prestress ribs to penetrate is formed in the bearing body, the other ends of the prestress ribs penetrate through the wedge-shaped clamping blocks respectively, in the tensioning process, the anchoring holes are matched with the wedge-shaped clamping blocks, and radial extrusion force is applied to the wedge-shaped clamping blocks through the hole wall, so that the wedge-shaped clamping blocks are meshed and anchor the prestress ribs.
2. The cross-type anchor for thin-walled structures according to claim 1 wherein the end face of the pressure body remote from the anchor plate is provided with an embedded pipe.
3. The cross-type anchoring element for thin-wall structures according to claim 2, wherein the pressure-bearing body comprises a pressure-bearing platform and a flat hollow pipeline, the pressure-bearing platform is connected with the anchoring plate, and the flat hollow pipeline is connected with the embedded pipe.
4. A cross-type anchoring member for thin-wall structures according to claim 3, wherein said pressure-bearing platform is provided with two diagonally symmetrical screw holes at diagonally opposite positions and is provided with a threaded through hole at a center position thereof near one side short side.
5. The cross-type anchoring element for thin-wall structures according to claim 4, wherein the flat hollow pipeline comprises an upper half pipeline and a lower half pipeline which are integrally formed, and a broken line hole is formed in the position, close to the threaded through hole, of the upper half pipeline, and the broken line hole is communicated with the threaded through hole through a pipeline.
6. The cross-type anchoring member for thin-walled structures according to claim 1, wherein the anchoring hole is composed of a large horn-shaped hole and a small horn-shaped hole, wherein the large horn-shaped hole and the small horn-shaped hole are communicated with each other at an end with a smaller opening diameter, and the large horn-shaped hole and the small horn-shaped hole are concentrically arranged.
7. The cross-type anchoring piece for a thin-wall structure according to claim 1, wherein the wedge-shaped clamping blocks comprise symmetrically arranged conical sheets, strip-shaped grooves are formed in outer arc surfaces of the two conical sheets, oblique thread teeth are formed in inner arc side walls of the two conical sheets, and flared ends of the inner arc side walls of the two conical sheets are respectively arranged.
8. The cross-type anchor for thin-walled structures of claim 7 wherein coils are disposed in the slots to secure the two blades together.

Description

Cross anchoring piece for thin-wall structure Technical Field The utility model relates to the technical field of anchors, in particular to a cross-type anchor for a thin-wall structure. Background In a prestressed concrete structure, in order to realize the establishment of an anchoring system, a prestressed anchor is generally used for anchoring a prestressed tendon. The wedge-shaped clamping block type anchoring piece is the most widely applied one due to the unique design of the wedge-shaped clamping block with the trapezoid structure and the anchoring plate with the trumpet-shaped hole. However, in the context of thin-walled concrete construction applications, such conventional anchors face a number of challenges. The thin-wall structure refers to a structure type with a thinner concrete layer, and is commonly used in occasions such as edge parts of two sides of a simply supported beam, large-span buildings and the like. Along with the development of the bridge and the building structure towards the light weight and the high strength, the application range of the thin-wall structure is expanding continuously. However, the thin-walled construction presents special requirements for the prestressed anchorage system in that smaller-sized anchors are required to avoid taking up excessive cross-sectional dimensions, thereby ensuring that the strength of the edge concrete is not affected. In particular, the prior art faces the following problems: The traditional wedge-shaped clamp block type anchoring piece with the circular structure is not suitable for the installation requirement of a thin-wall structure due to the fact that the cross section size of the traditional wedge-shaped clamp block type anchoring piece is large, the diameter of an embedded pipe corresponding to the anchoring piece is also large, the vertical size of the anchoring piece in the thin-wall structure is too large, the residual thickness on the upper side and the lower side of an anchoring system is reduced, the structural strength is further affected, and the horn-shaped holes, the wedge-shaped clamp blocks and prestress bundles in the holes are arranged in a straight-line arrangement mode, so that larger friction loss is caused. Particularly in a thin-wall structure, as the arrangement width of the prestressed tendons is limited, larger bending angles are easily generated at the starting points of the embedded pipes, the friction loss risk is increased, and even the prestressed tendons are possibly broken, the existing anchoring piece tends to adopt a smaller hole number to adapt to the thickness requirement of the thin-wall structure, the anchoring strength is directly reduced, and the requirement of high-strength design cannot be met. Disclosure of utility model The present utility model is directed to a cross-type anchor for thin-wall structures, which solves the problems set forth in the background art. In order to achieve the above purpose, the utility model provides a cross-type anchoring piece for a thin-wall structure, comprising: The anchoring plate is provided with a plurality of groups of anchoring holes which are distributed in a crossing way; a plurality of wedge-shaped clamping blocks respectively arranged in the plurality of groups of anchoring holes and The bearing body is in contact with one end face of the anchoring plate, a cavity for one ends of the prestress ribs to penetrate is formed in the bearing body, the other ends of the prestress ribs penetrate through the wedge-shaped clamping blocks respectively, in the tensioning process, the anchoring holes are matched with the wedge-shaped clamping blocks, and radial extrusion force is applied to the wedge-shaped clamping blocks through the hole wall, so that the wedge-shaped clamping blocks are meshed and anchor the prestress ribs. As a further scheme of the utility model, the end face of the pressure-bearing body far away from the anchoring plate is provided with an embedded pipe. As a further scheme of the utility model, the pressure-bearing body comprises a pressure-bearing platform and a flat hollow pipeline, wherein the pressure-bearing platform is connected with the anchoring plate, and the flat hollow pipeline is connected with the embedded pipe. As a further scheme of the utility model, the pressure-bearing platform is provided with two diagonally symmetrical screw holes at diagonally opposite positions and provided with a threaded through hole at the center position of the pressure-bearing platform, which is close to the short side of one side. As a further scheme of the utility model, the flat hollow pipeline comprises an upper half pipeline and a lower half pipeline which are integrally formed, wherein a broken line hole is formed in the position, close to the threaded through hole, of the upper half pipeline, and the broken line hole is communicated with the threaded through hole through a pipeline. As a further scheme of the utility model, the anchoring