CN2284265Y

CN2284265Y - Non-sticking prestressing anchor tendon

Info

Publication number: CN2284265Y
Application number: CN 97200795
Authority: CN
Inventors: 林远征; 袁祖智; 李国立; 周正; 宋慧杰
Original assignee: BEIJING RESEARCH INST OF BUILDING ENGINEERING
Current assignee: BEIJING RESEARCH INST OF BUILDING ENGINEERING
Priority date: 1997-01-23
Filing date: 1997-01-23
Publication date: 1998-06-17
Anticipated expiration: 2007-01-23

Abstract

The utility model relates to a non-sticking prestressed anchor bundle, comprising non-sticking anchoring cables, a corrugated pipe, cement grout materials, a concrete pier head, and an anchoring device. An inner isolation supporter used for isolating among the anchoring cables, the middle of the inner isolation supporter is provided with a hole which is used for passing through concrete liquid, the outside of the anchoring cables is provided with the corrugated pipe, and an outer aligning supporter used for isolating is arranged between the corrugated pipe and a drilling hole. One end of the corrugated pipe is provided with a guide cap which is used for passing through a grout pipe, the periphery of the other end of the corrugated pipe is provided with a steel sleeve pipe which is connected with a steel tie plate, the anchoring device is connected to a steel tie plate, and the non-striking anchoring cables are anchored through clipping sheets. The utility model has the advantages of nonperishable breaking, strong antisepsis ability, long lasting, adjustable anchoring force, once grouting, and convenient construction.

Description

Novel prestressing without bondn anchor bundle

The utility model relates to a kind of novel prestressing without bondn anchor bundle.

In slope support engineering, adopted a large amount of rock anchor reinforcement measures, because rock anchor engineering is a concealed work, have once use and damage after the characteristics that can not repair, be subjected to people's attention its application life further, therefore, be necessary to provide a kind of and have permanent anticorrosion, can be used for slope reinforcement to the adaptable pre-stressed anchor rods that anchored force can adjust with the rock mass displacement.

The purpose of this utility model provides a kind of novel prestressing without bondn anchor bundle, and this anchor bundle antiseptic power is strong, easy fracture not, and excellent in durability can be adjusted anchored force.

For achieving the above object, the utility model is taked following design scheme: novel prestressing without bondn anchor bundle comprises: non-bonded anchorage cable, bellows, cement grouting material, the concrete pier nose, ground tackle, described non-bonded anchorage cable is a non-bending steel cable, isolate with interior isolation mount between each anchor cable, have the hole in the middle of the interior isolation mount, being used for cement grout passes through, anchor cable is outward a bellows, beyond between bellows and boring medium-height trestle is isolated, bellows one end is established the guiding cap that passes through for grout pipe, the outer steel sleeve that is with of the bellows other end, it and billet join, billet is imbedded in the concrete pier nose, connects ground tackle on the billet, and non-bonded anchorage cable is by the intermediate plate anchoring.

Below in conjunction with accompanying drawing embodiment of the present utility model is described in detail.

Fig. 1: the utility model structural representation

Fig. 2: outer anchor head, protective cap structural representation

As Fig. 1, shown in Figure 2,1 is non-bending steel cable, 3 is construction site drilling, 10 is interior isolation mount, purpose be make between the steel strand at regular intervals, isolation mount can adopt various ways, for example: a plurality of anchor holes can be evenly arranged in the outer ring, have hole in the middle of it, this hole can be used for cement grout by and settle Grouting Pipe, be plastic film capicitor 2 in the periphery of steel strand, centering isolation mount 9 outside between bellows and boring, being placed with, purpose is to make anchor bundle body centering behind the anchor bundle hand-hole, straight, promptly play centering, help the effect of wearing, this support can adopt two halfround bar slices, the back of sheet has protruding peak to be used for anchor bundle centering location, isolation mount play in being to prevent, can be in interior isolation mount both sides in addition colligation 9, for example with the colligation of no zinc galvanized wire.

In order to make anchor bundle once grouting; be provided with for the guiding cap 6 of adorning grout pipe at bellows one end; wherein; 5,7 be respectively first grout pipe, second grout pipe; in boring, be marked with cement slurry 4; the other end at bellows has a steel sleeve 11; steel sleeve and concrete pier nose 12 are affixed, and the steel sleeve end connects billet 13, connect anchor ring 14 on the billet; steel strand are clamped by intermediate plate; 16 is the temporary protection cap, when needs are adjusted the stress of stress anchor bundle, and desirable adjustment down; 15 is elastic tape, seals.Between billet and anchor ring, be added with dynamometer 17, a protection box 18 arranged outside dynamometer, anchor ring, in be added with antirust grease 19, same, be added with antirust grease 19 in the temporary protection cap.In addition, also can be in dynamometer, anchor ring and steel strand end all with the concrete sealing.

The utility model advantage: because non-bonded anchorage cable is non-bending steel cable, when rock deformation, freedom Section can be adjusted strain along total length, thereby can avoid distortion to concentrate on the local section and cause the fracture of anchor bundle, and is pre-The size of stress is also with the rock deformation Self-adjustment, when using the temporary protection cap, and can showing according to dynamometer Value is adjusted the anchor bundle on demand. This anchor bundle is easy fracture not only, and owing to adopts plastic film capicitor to have Strong antiseptic power has improved the durability of anchoring, and the Korrosionsmediums such as anti-sealing enter the anchor bundle, in addition, This anchor bundle once grouting, easy and simple to handle.

Claims

1, a kind of novel prestressing without bondn anchor bundle, it is characterized in that it comprises: non-bonded anchorage cable, bellows, cement grouting material, the concrete pier nose, ground tackle, described non-bonded anchorage cable is a non-bending steel cable, isolate with interior isolation mount between each anchor cable, have the hole in the middle of the interior isolation mount, being used for cement grout passes through, anchor cable is outward a bellows, beyond between bellows and boring medium-height trestle is isolated, bellows one end is established the guiding cap that passes through for grout pipe, the outer steel sleeve that is with of the bellows other end, it and billet join, billet is imbedded in the concrete pier nose, connects ground tackle on the billet, and non-bonded anchorage cable is by the intermediate plate anchoring.

2, novel prestressing without bondn anchor bundle according to claim 1 is characterized in that: isolation mount is middle perforate in described, and there is anchor hole outer ring evenly row.

3, novel prestressing without bondn anchor bundle according to claim 1 is characterized in that: described is two halfround bar slices to medium-height trestle outward, and there is protruding peak at the back of sheet, and protruding peak is used to restraint the centering location.

4, novel prestressing without bondn anchor bundle according to claim 1 is characterized in that: the anchor ring periphery of the described ground tackle temporary protection cap that is spirally connected.

5, novel prestressing without bondn anchor bundle according to claim 1 is characterized in that: the isolation mount both sides are banded with the colligation of anti-interior isolation mount play in described.