CN1040838A - Antifatigue steel standed wire grouped anchor - Google Patents
Antifatigue steel standed wire grouped anchor Download PDFInfo
- Publication number
- CN1040838A CN1040838A CN 89106943 CN89106943A CN1040838A CN 1040838 A CN1040838 A CN 1040838A CN 89106943 CN89106943 CN 89106943 CN 89106943 A CN89106943 A CN 89106943A CN 1040838 A CN1040838 A CN 1040838A
- Authority
- CN
- China
- Prior art keywords
- anchor
- steel
- cable
- cup
- group
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Landscapes
- Bridges Or Land Bridges (AREA)
- Piles And Underground Anchors (AREA)
Abstract
A kind of antifatigue steel standed wire grouped anchor is used for the anchoring system of cable stayed bridge cable, is that cold cast upset head anchor technology and group anchor technology are combined, performance strong point separately.Feature is to increase the controlled packing ring of a distortion between anchor slab and anchor cup, has static load ability height by this ground tackle cable of making of constructing, and anti-fatigue performance is strong; Because the little weakening to the beam tower section in cable cross section is little, construction costs is reduced, and easy construction.
Description
The invention belongs to the bridge anchoring engineering, be specially adapted to the cable anchoring engineering of cable stayed bridge.
Cable stayed bridge is made up of beam, tower and cable, and cable plays connection and clamped beam, tower.Bridge in use, tiltedly cable can bear the very big fatigue stress of amplitude of variation, fatigue fracture easily takes place, so the cable anchoring is related to the problem that can bridge normally be runed in the anchorage zone.After 1984, the cable stayed bridge of China's construction has adopted " antifatigue steel wire cold cast upset head anchor " (it is Hou Yincheng that development first is finished the people).This ground tackle, be steel wire to be passed the inside be reverse taper, the cylindrical cylindrical shell in outside, the steel wire heading is anchored on the anchor plate of body end surface, in cylindrical shell, cast steel ball, epoxy resin and rock dust mixture, this a part of pouring material can bond steel tendon securely, forms a cooperative cone.This ground tackle has very high static load anchoring coefficient and good anti-fatigue performance; But it is accurate especially in the construction to the wire blanking length requirement.Because reserving hole is big on the tower, and is very big to the weakening of tower section; Cable is very long very heavy, makes the transporting and hoisting effort of taking a lot of work, and this cable obviously reduces the very big cable stayed bridge applicability of span.(it is Pei that development first is finished the people to " the QM steel strand group anchor " that worked out in 1987
) be that steel wire bundle is anchored on group anchor anchor slab, it is more convenient to construct, less demanding to the steel strand cutting length, and its static load ability is also very strong.But because of ground tackle bites to steel strand, so anti-fatigue performance is not as the chill casting ground tackle.
The objective of the invention is two kinds of anchorinies are combined, performance strong point is separately made antifatigue steel standed wire grouped anchor, makes it have higher static load ability and fatigue resistance, and easy construction; The reserving hole of tower is reduced, and it is few that its cross section is weakened, thereby reduce construction costs.
Antifatigue steel standed wire grouped anchor ground tackle of the present invention is made up of anchor cup, group's anchor anchor slab, steel wire bundle, and the anchor cup is a steel cylinder, and external surface is thread-shaped, light circle or channel shaped, and there is a back taper cavity the inside; Group's anchor anchor slab is the steel plectane; The steel strand arrangement mode is circle, hexagon or polygon; Be characterised in that between anchor cup and group's anchor anchor slab and establish the controlled packing ring of a distortion that be out of shape controlled packing ring and be annular, material is engineering plastics; In the anchor cup, be filled with the chill casting material.
Job practices is: at first steel wire bundle 4 is passed anchor cup 1, the controlled packing ring 2 of distortion, group's anchor anchor slab 3, with group's anchor tension technology stretch-draw steel strand (being called wire drawing), steel wire bundle is anchored on group anchor anchor slab 3; Be out of shape controlled packing ring 2 and be arranged with the support hoop outside, three received strength only produces minor variations; To insert in the anchor cup 1 by stuffing hole 7 at the scene by the chill casting material 5 that steel ball, epoxy resin, rock dust are formed then; By bottoming hole 9 heating, make the chill casting material cured with heating element; After reaching design strength, remove the support hoop of the controlled packing ring of supporting deformation, make it under the effect of axial stress, produce big distortion.Like this, it mainly is group anchor anchor slab → chill casting material that the transfer route that is added to the power on group anchor anchor slab by steel strand is changed into by group's anchor anchor slab → packing ring → anchor cup, so anchored end is stressed reduces, and the effect of chill casting material is given full play to.
As need cable is carried out the stress adjustment, can be with the direct stretch-draw anchor of jack cup (be called and draw anchor), fastening nut 6 then, make cable by the builder's tonnage anchoring.
Wherein the anchor cup is the steel cylindrical part, and external surface can be thread-shaped, light circle or channel shaped as required, and there is a back taper cavity the inside; Group's anchor anchor slab is the steel plectane; Be out of shape controlled packing ring and be annular, material is engineering plastics; The chill casting material is an epoxy iron sand filler; The arrangement mode of steel wire bundle can be circle, hexagon or polygon.
Antifatigue steel standed wire grouped anchor method of the present invention and ground tackle, be to change not only the form that cold cast upset head anchor can only " draw anchor " into can " wire drawing " but also can " draw anchor " form, thereby bring weight reduction, be convenient to transport, simplify the advantage of installation for the design of cable, construction.And the cutting length of steel strand requires to loosen greatly, and the protection form of cable can adopt several different methods such as sleeving plastic pipe or coating steel pipe.Owing to beam, tower section are weakened few, thereby dead load can significantly alleviate, thereby construction costs is reduced; The anchorage style of cable on tower can be more, and be more concentrated, and the anti-fatigue performance of ground tackle can reach the level of cold cast upset head anchor.
The present invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is an antifatigue steel standed wire grouped anchor structure chart of the present invention
Fig. 2 is the A-A sectional drawing of Fig. 1
The long 725mm of anchor cup, diameter 400mm, material are selected ordinary steel for use as seen from Figure 1, be shaped as external screw thread, in be the cylinder of back taper body, cap nut; 60 steel strand pass the anchor cup, the controlled packing ring of distortion is anchored at diameter 400mm, on group's anchor anchor slab of thick 160mm; The controlled packing ring of distortion between anchor cup and group's anchor anchor slab is a nylon ring, and steel strand adopt the hexagon anchorage style, and the disrumpent feelings tonnage of ground tackle reaches 1560 tons.
Claims (3)
1, a kind of antifatigue steel standed wire grouped anchor is made up of anchor cup, group's anchor anchor slab, steel wire bundle, it is characterized in that: establish the controlled packing ring of a distortion between anchor cup and group's anchor anchor slab; The anchor cup is a steel cylinder, and external surface is a thread-shaped, and there is a back taper cavity the inside; Group's anchor anchor slab is the steel plectane; Be out of shape controlled packing ring and be annular, material is engineering plastics, and the chill casting material of filling in the anchor cup is an epoxy iron sand filler; The steel strand arrangement mode is circular.
2, antifatigue steel standed wire grouped anchor as claimed in claim 1 is characterized in that: anchor cup external surface can be light circle or channel shaped.
3, antifatigue steel standed wire grouped anchor as claimed in claim 1 is characterized in that: the arrangement mode of steel strand can be hexagon or polygon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89106943 CN1013600B (en) | 1989-09-09 | 1989-09-09 | Antifatigue steel standed wire grouped anchor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89106943 CN1013600B (en) | 1989-09-09 | 1989-09-09 | Antifatigue steel standed wire grouped anchor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1040838A true CN1040838A (en) | 1990-03-28 |
| CN1013600B CN1013600B (en) | 1991-08-21 |
Family
ID=4856989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89106943 Expired CN1013600B (en) | 1989-09-09 | 1989-09-09 | Antifatigue steel standed wire grouped anchor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1013600B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102587278A (en) * | 2012-03-09 | 2012-07-18 | 柳州豪姆机械有限公司 | Chill-cast steel-stranded anchor cable |
| CN111289134A (en) * | 2020-02-24 | 2020-06-16 | 淄博益源工程技术有限公司 | Multipoint flexible thermocouple/resistor with conical sealing cavity |
-
1989
- 1989-09-09 CN CN 89106943 patent/CN1013600B/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102587278A (en) * | 2012-03-09 | 2012-07-18 | 柳州豪姆机械有限公司 | Chill-cast steel-stranded anchor cable |
| CN111289134A (en) * | 2020-02-24 | 2020-06-16 | 淄博益源工程技术有限公司 | Multipoint flexible thermocouple/resistor with conical sealing cavity |
| CN111289134B (en) * | 2020-02-24 | 2020-09-29 | 淄博益源工程技术有限公司 | Multipoint flexible thermocouple/resistor with conical sealing cavity |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1013600B (en) | 1991-08-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201326524Y (en) | Composite tower cylinder of wind turbine | |
| CN101544020B (en) | Preparation method for prestressed high-strength concrete pile | |
| US20120048429A1 (en) | Centrifugally cast pole and method | |
| CN103866761A (en) | Mechanical connection pile head using repetitively used precast concrete pile as end plate and manufacturing method of mechanical connection pile head | |
| CN201241479Y (en) | Stretching device of prestress FRP rib anchorage | |
| CN113585631A (en) | Continuous curved conical composite anchor device and method for multi-beam carbon fiber parallel inhaul cable | |
| CN104746429A (en) | Pull rope for landscape bridge and manufacturing method of pull rope | |
| US5784851A (en) | Centrifugally cast pole and method | |
| CN1040838A (en) | Antifatigue steel standed wire grouped anchor | |
| CN111350269A (en) | Prefabricated part, prefabricated part and bearing platform connecting structure and prefabricated part machining method | |
| CN215519505U (en) | Continuous curved conical composite anchor for multi-beam carbon fiber parallel inhaul cable | |
| CN206071086U (en) | The system of prestress rope integrative consolidation slab column | |
| CN215214293U (en) | Stud combined structure | |
| AU731917B2 (en) | Turnbuckle and method of making a turnbuckle | |
| CN2068523U (en) | Durable steel hinged wire cooling casting group anchor | |
| CN2469291Y (en) | Large diameter prestress concrete water pipe | |
| CN112012195B (en) | Construction method of precast pile anticorrosion hoisting structure | |
| CN209798807U (en) | Railway bridge tubular pile and bearing platform connecting structure and railway bridge foundation structure | |
| CN2249772Y (en) | Steel wire bounder | |
| CN102943586B (en) | Prestressed cement pole comprising embedded prestressed tension ring | |
| CN110468830B (en) | Quick anchor pile and construction method | |
| CN220685788U (en) | Composite anchoring steel strand inhaul cable | |
| CN205618307U (en) | Connection structure between a concrete tower section of thick bamboo and head tower section of thick bamboo | |
| CN220619791U (en) | Novel cold-cast reinforced whole-bundle extrusion steel strand inhaul cable | |
| CN211036968U (en) | Quick anchor stake |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |