CN103243863A - Tension anchoring system of pre-stressed wire reinforcing column and construction method - Google Patents
Tension anchoring system of pre-stressed wire reinforcing column and construction method Download PDFInfo
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- CN103243863A CN103243863A CN2013101915376A CN201310191537A CN103243863A CN 103243863 A CN103243863 A CN 103243863A CN 2013101915376 A CN2013101915376 A CN 2013101915376A CN 201310191537 A CN201310191537 A CN 201310191537A CN 103243863 A CN103243863 A CN 103243863A
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Abstract
The invention discloses a tension anchoring system of a pre-stressed wire reinforcing column and a construction method. The tension anchoring system comprises a tension wire, an anchoring device and a tension device, wherein the anchoring device comprises an anchoring steel plate, a fixing end extrusion anchor, a tension end part extrusion anchor and a tension end force applying extrusion anchor; the tension device comprises a fixing end clamp, a tension end clamp and a jack; the tension wire surrounds a column to be reinforced for one circle; the fixing end of the tension wire is fixed on one side of the anchoring steel plate through the fixing end extrusion anchor; the fixing end clamp is fixed on the tension wire on the other side of the anchoring steel plate in a clamping manner; the fixing end clamp props against the anchoring steel plate; the tension end is fixed on the other side of the anchoring steel plate through the tension end part extrusion anchor; the tension end force applying extrusion anchor and the tension end clamp are sequentially arranged from the end part to the interior at the tension end on the tension wire; and the tension end clamp is connected with the fixing end clamp through the jack. Circular pressure is exerted to the column in a lossless mode, so that the properties of the column are improved.
Description
Technical field
The present invention relates to a kind of cylinder bracing means and job practices thereof, particularly a kind of bracing means and job practices thereof that adopts prestressed wire material that cylinder is reinforced.
Background technology
Building, bridge etc. are bad because of various disasters, design error, construction quality, the improper design of use and management, adverse circumstances are corroded, structure durability is degenerated, function of use changes, surpass design reference period also will continue use etc. and need transform reinforcing, great amount of manpower, financial resources and material resources be will save by rational reinforcing, huge social and economic benefit produced.
Structural column is as one of most important load-carrying member in the structure, untimely it taked reinforcement measure in case the crack of bearing capacity or normal use occurs influence, and its consequence is hardly imaginable.
At present, the method that structural column is reinforced has a variety of, usually with member in the effect of bearing three-dimensional same sex power, the mechanics principle that its bearing capacity has a raising is the main flow that present structural column is reinforced for the reinforcement means on basis.Utilize this principle, cylinder is applied circumferential pressure, realize alms giver's moving constraint reinforcing in fact, making cylinder be in three dimension stress stress state lateral expansion in advance suffers restraints, can suppress the appearance in new crack and carry out, closed primary fracture significantly improves bearing capacity and the deformability of concrete column.At present problem demanding prompt solution is, how under limited construction space and execution conditions, coupled columns body construction hoop is stressed, thereby realizing that the coupled columns height is imitated easily reinforces.
Summary of the invention
The purpose of this invention is to provide a kind of prestressed wire material and reinforce tensioned anchorage system and the job practices of cylinder, solve by simple and practical technological means, thereby existing cylinder is reinforced the bearing capacity that improves cylinder, the technical problem that prolongs its application life.
For achieving the above object, the present invention adopts following technical scheme:
A kind of prestressed wire material is reinforced the tensioned anchorage system of cylinder, comprise the stretch-draw wire rod, anchor device and tensioning equipment, described anchor device is by anchor plate, the fixed end Extrusion anchor ground tackle, stretch-draw end end Extrusion anchor ground tackle and stretch-draw end application of force Extrusion anchor ground tackle are formed, described tensioning equipment is by the fixed end anchor clamps, stretch-draw end anchor clamps and jack are formed, described stretch-draw metal loop is around intending reinforcing one week of cylinder, its fixed end is fixed on anchor plate one side by the fixed end Extrusion anchor ground tackle, stretch-draw wire rod at the anchor plate opposite side fixes the fixed end anchor clamps and makes the fixed end anchor clamps and anchor plate one side, stretch-draw wire rod at the anchor plate opposite side fixes the fixed end anchor clamps, described fixed end anchor clamps and anchor plate hold out against, the stretch-draw end of described stretch-draw wire rod is fixed on the anchor plate opposite side by stretch-draw end end Extrusion anchor ground tackle, and on the stretch-draw wire rod of stretch-draw end, inwardly be disposed with stretch-draw end application of force Extrusion anchor ground tackle and stretch-draw end anchor clamps from the end, described stretch-draw end anchor clamps block stretch-draw end application of force Extrusion anchor ground tackle, and described stretch-draw end anchor clamps are connected by jack with the fixed end anchor clamps.
Be provided with the bearing pin of prevention stretch-draw off-centre between described fixed end anchor clamps and the stretch-draw end anchor clamps.
Described fixed end anchor clamps are the steel plate that some isometric support arms are stretched out in a side, and the plate body between support arm has jagged through wires hole.
Described stretch-draw end anchor clamps are the steel plate that has jagged Wire channel in building on the side, and the position of described Wire channel in building is corresponding one by one with through wires hole.
Described anchor plate is the steel plate that a side has the zigzag draw-in groove, being evenly distributed of described zigzag draw-in groove, and its position is corresponding one by one with through wires hole.
The width of described zigzag draw-in groove, Wire channel in building and through wires hole is that the diameter of stretch-draw wire rod adds 1mm.
Described stretch-draw wire rod is steel strand, wire rope or steel wire.
The tensioned anchorage system that described prestressed wire material is reinforced cylinder carries out the method that the concrete column cylinder is reinforced, and it is characterized in that:
Step 3, anchor plate is placed plan reinforced column external surface along intending the reinforced column axon to direction, with hand steered good, the fixed end of stretch-draw wire rod is snapped in the zigzag draw-in groove of anchor plate, and fixed end Extrusion anchor ground tackle and anchor plate are held out against, the other end blocks stretch-draw end application of force Extrusion anchor ground tackle around intending reinforcing cylinder after one week with stretch-draw end anchor clamps, simultaneously, the fixed end anchor clamps are stuck on the fixed end of stretch-draw wire rod and the support arm of fixed end anchor clamps and anchor plate are held out against;
Step 4 is installed jack;
Step 5, the operation jack makes its simultaneous tension end anchor clamps and fixed end anchor clamps, reduces distance between the two, thereby the stretch-draw wire rod is applied prestressing force;
Step 7 when monitored data reaches designing requirement, is fixed on the end of stretch-draw wire rod on the anchor plate.
Compared with prior art the present invention has following characteristics and beneficial effect:
1) anchor system of the present invention in applying prestressed process to former cylinder without any damage, but can apply circumferential pressure to cylinder by prestress wire, thereby increase substantially bearing capacity, the rigidity of reinforced concrete column, improve its deformation performance, improve its anti-seismic performance.
2) this anchor system can be given full play to the high characteristic of steel strand tensile strength, improves bearing capacity, rigidity, deformability and the anti-seismic performance of reinforcing the back concrete column.
3) adopt this anchor system that steel strand are applied prestressing force, prestressing force level more than 75% of tensile strength that can reach capacity; Can give full play to the high characteristic of steel strand tensile strength.
4) prestressed construction equipment of the present invention only need arrange an anchor plate, and is simple in structure, easy to implement, but many steel strand of single tension, and quick construction, with low cost is convenient to site operation.
5) applicability of the present invention is stronger, reinforces applicable to the cylinder of various constructional materialss and the cylinder of various common section forms.
The present invention can be widely used in the reinforcing to the existing structure cylinder.
Description of drawings
The present invention will be further described in detail below in conjunction with accompanying drawing.
Fig. 1 is that the anchoring tensioning system uses state diagram.
Fig. 2 is anchoring tensioning system structural representation.
Fig. 3 is fixed end anchor clamps detail drawings.
Fig. 4 is stretch-draw end anchor clamps detail drawings.
Fig. 5 is the anchor plate detail drawing.
Reference numeral: 1-stretch-draw wire rod, 2-anchor plate, 2.1-zigzag draw-in groove, 3-fixed end Extrusion anchor ground tackle, 4-stretch-draw end end Extrusion anchor ground tackle, 5-stretch-draw end application of force Extrusion anchor ground tackle, 6-stretch-draw end anchor clamps, 6.1-Wire channel in building, 7-fixed end anchor clamps, 7.1-support arm, 7.2-through wires hole, 8-intend reinforcing cylinder, 9-protection mortar, 10-jack, 11-bearing pin.
The specific embodiment
Embodiment is extremely shown in Figure 5 referring to Fig. 1, a kind of prestressed wire material is reinforced the tensioned anchorage system of cylinder, comprise stretch-draw wire rod 1, anchor device and tensioning equipment, described anchor device is by anchor plate 2, fixed end Extrusion anchor ground tackle 3, stretch-draw end end Extrusion anchor ground tackle 4 and stretch-draw end application of force Extrusion anchor ground tackle 5 are formed, described tensioning equipment is by fixed end anchor clamps 7, stretch-draw end anchor clamps 6 and jack are formed, described stretch-draw wire rod 1 is reinforced 8 one weeks of cylinder around intending, its fixed end is fixed on anchor plate 2 one sides by fixed end Extrusion anchor ground tackle 3, stretch-draw wire rod 1 at anchor plate 2 opposite sides fixes fixed end anchor clamps 7 and makes fixed end anchor clamps 7 and anchor plate 2 one sides, stretch-draw wire rod 1 at anchor plate 2 opposite sides fixes fixed end anchor clamps 7, described fixed end anchor clamps 7 hold out against with anchor plate 2, the stretch-draw end of described stretch-draw wire rod 1 is fixed on anchor plate 2 opposite sides by stretch-draw end end Extrusion anchor ground tackle 4, and on the stretch-draw wire rod 1 of stretch-draw end, inwardly be disposed with stretch-draw end application of force Extrusion anchor ground tackle 5 and stretch-draw end anchor clamps 6 from the end, described stretch-draw end anchor clamps 6 block stretch-draw end application of force Extrusion anchor ground tackle 5, and described stretch-draw end anchor clamps 6 are connected by jack 10 with fixed end anchor clamps 7.
Be provided with the bearing pin 11 of prevention stretch-draw off-centre between described fixed end anchor clamps 7 and the stretch-draw end anchor clamps 6.
Described fixed end anchor clamps 7 are the steel plate that some isometric support arms 7.1 are stretched out in a side, and the plate body between support arm 7.1 has jagged through wires hole 7.2, referring to Fig. 3.
Described stretch-draw end anchor clamps 6 are the steel plate that has jagged Wire channel in building 6.1 on the side, and the position of described Wire channel in building 6.1 is corresponding one by one with through wires hole 7.2, referring to Fig. 4.
Described anchor plate 2 is the steel plate that a side has zigzag draw-in groove 2.1, being evenly distributed of described zigzag draw-in groove 2.1, and its position is corresponding one by one with through wires hole 7.2, referring to Fig. 5.
The width of described zigzag draw-in groove 2.1, Wire channel in building 6.1 and through wires hole 7.2 is that the diameter of stretch-draw wire rod 1 adds 1mm.
Described stretch-draw wire rod is steel strand, wire rope or steel wire.
The stretch-draw wire rod of selecting for use in the present embodiment is steel strand, its diameter is 4.5mm, 4 steel strand have been selected in the present embodiment for use, each bar steel strand is equidistantly arranged, and equal in length, it is identical to make fixed end arrive the distance of stretch-draw end like this, guarantees that all steel strand are beginning stressed stretch-draw with a starting point.
The length of anchor plate can be determined flexibly according to constructure scheme, general length 30～400mm, steel plate anchoring piece width determines that by calculating generally get 20～60mm, its thickness is determined according to the diameter of steel strand, the size that applies prestressed size, steel strand end anchorage and construction process requirement.
The groove of the anchor plate in the present embodiment is evenly arranged along the length direction of steel plate, spacing 2Omm, and the diameter that the width of groove is got steel strand adds 1mm.Anchor plate 2 is a steel plate, and its thickness is 20mm, and width is 30mm, and length is 220mm.Press the globality of smearing or spraying the thick protection mortar 9 reinforcement prestress wires of 20mm～30mm and concrete column at cylinder after stretch-draw is finished, and can protect prestress wire.
The cross section that described plan is reinforced cylinder is circle, ellipse, polygon or any one common column section type.
The tensioned anchorage system that described prestressed wire material is reinforced cylinder carries out the method that the concrete column cylinder is reinforced, and it is characterized in that:
Step 3, place plan to reinforce cylinder 8 external surfaces along intending reinforcing cylinder 8 axial directions anchor plate 2, with hand steered good, the fixed end of stretch-draw wire rod is snapped in the zigzag draw-in groove 2.1 of anchor plate 2, and fixed end Extrusion anchor ground tackle 3 and anchor plate 2 are held out against, the other end blocks stretch-draw end application of force Extrusion anchor ground tackle 5 around intending reinforcing cylinder after 8 one weeks with stretch-draw end anchor clamps 6, simultaneously, fixed end anchor clamps 7 are stuck on the fixed end of stretch-draw wire rod and the support arm of fixed end anchor clamps 7 and anchor plate 2 are held out against;
Step 4 is installed jack 10;
Step 5, operation jack 10 makes its simultaneous tension end anchor clamps 6 and fixed end anchor clamps 7, reduces distance between the two, thereby the stretch-draw wire rod is applied prestressing force;
Step 7 when monitored data reaches designing requirement, is fixed on the end of stretch-draw wire rod on the anchor plate.
Claims (8)
1. a prestressed wire material is reinforced the tensioned anchorage system of cylinder, comprise stretch-draw wire rod (1), anchor device and tensioning equipment, it is characterized in that: described anchor device is by anchor plate (2), fixed end Extrusion anchor ground tackle (3), stretch-draw end end Extrusion anchor ground tackle (4) and stretch-draw end application of force Extrusion anchor ground tackle (5) are formed, described tensioning equipment is by fixed end anchor clamps (7), stretch-draw end anchor clamps (6) and jack are formed, described stretch-draw wire rod (1) is reinforced (8) one weeks of cylinder around intending, its fixed end is fixed on anchor plate (2) one sides by fixed end Extrusion anchor ground tackle (3), stretch-draw wire rod (1) at anchor plate (2) opposite side fixes fixed end anchor clamps (7) and makes fixed end anchor clamps (7) and anchor plate (2) one sides, stretch-draw wire rod (1) at anchor plate (2) opposite side fixes fixed end anchor clamps (7), described fixed end anchor clamps (7) hold out against with anchor plate (2), the stretch-draw end of described stretch-draw wire rod (1) is fixed on anchor plate (2) opposite side by stretch-draw end end Extrusion anchor ground tackle (4), and at last stretch-draw end application of force Extrusion anchor ground tackle (5) and the stretch-draw end anchor clamps (6) of inwardly being disposed with from the end of the stretch-draw wire rod (1) of stretch-draw end, described stretch-draw end anchor clamps (6) block stretch-draw end application of force Extrusion anchor ground tackle (5), and described stretch-draw end anchor clamps (6) are connected by jack (10) with fixed end anchor clamps (7).
2. prestressed wire material according to claim 1 is reinforced the tensioned anchorage system of cylinder, it is characterized in that: the bearing pin (11) that is provided with prevention stretch-draw off-centre between described fixed end anchor clamps (7) and the stretch-draw end anchor clamps (6).
3. prestressed wire material according to claim 1 is reinforced the tensioned anchorage system of cylinder, it is characterized in that: described fixed end anchor clamps (7) are the steel plate that some isometric support arms (7.1) are stretched out in a side, and the plate body between support arm (7.1) has jagged through wires hole (7.2).
4. reinforce the tensioned anchorage system of cylinders according to claim 1 or 3 described prestressed wire materials, it is characterized in that: described stretch-draw end anchor clamps (6) are the steel plate that has jagged Wire channel in building (6.1) on the side, and the position of described Wire channel in building (6.1) is corresponding one by one with through wires hole (7.2).
5. prestressed wire material according to claim 4 is reinforced the tensioned anchorage system of cylinder, it is characterized in that: described anchor plate (2) is the steel plate that a side has zigzag draw-in groove (2.1), being evenly distributed of described zigzag draw-in groove (2.1), its position is corresponding one by one with through wires hole (7.2).
6. prestressed wire material according to claim 5 is reinforced the tensioned anchorage system of cylinder, and it is characterized in that: the width of described zigzag draw-in groove (2.1), Wire channel in building (6.1) and through wires hole (7.2) is that the diameter of stretch-draw wire rod (1) adds 1mm.
7. prestressed wire material according to claim 5 is reinforced the tensioned anchorage system of cylinder, and it is characterized in that: described stretch-draw wire rod is steel strand, wire rope or steel wire.
8. a tensioned anchorage system that adopts any described prestressed wire material of claim 1 to 7 to reinforce cylinder carries out the method that the concrete column cylinder is reinforced, and it is characterized in that: step is as follows:
Step 1 according to designing requirement and field condition, is determined the construction cutting length of stretch-draw wire rod;
Step 2, install and fix end Extrusion anchor ground tackle (3), stretch-draw end end Extrusion anchor ground tackle (4) and stretch-draw end application of force Extrusion anchor ground tackle (5) respectively at the both ends of stretch-draw wire rod, the position of described stretch-draw end application of force Extrusion anchor ground tackle (5) need be determined by width and the construction operation space of anchor plate (2);
Step 3, place plan to reinforce cylinder (8) external surface along intending reinforcing cylinder (8) axial direction anchor plate (2), with hand steered good, the fixed end of stretch-draw wire rod is snapped in the zigzag draw-in groove (2.1) of anchor plate (2), and fixed end Extrusion anchor ground tackle (3) and anchor plate (2) are held out against, the other end is around intending reinforcing cylinder after (8) one weeks, block stretch-draw end application of force Extrusion anchor ground tackle (5) with stretch-draw end anchor clamps (6), simultaneously, fixed end anchor clamps (7) are stuck on the fixed end of stretch-draw wire rod and the support arm of fixed end anchor clamps (7) and anchor plate (2) are held out against;
Step 4 is installed jack (10);
Step 5, operation jack (10) makes its simultaneous tension end anchor clamps (6) and fixed end anchor clamps (7), reduces distance between the two, thereby the stretch-draw wire rod is applied prestressing force;
Step 6, the prestressing force size of monitoring stretch-draw wire rod, and adjust at any time according to designing requirement;
Step 7 when monitored data reaches designing requirement, is fixed on the end of stretch-draw wire rod on the anchor plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310191537.6A CN103243863B (en) | 2013-05-22 | 2013-05-22 | Tension anchoring system of pre-stressed wire reinforcing column and construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310191537.6A CN103243863B (en) | 2013-05-22 | 2013-05-22 | Tension anchoring system of pre-stressed wire reinforcing column and construction method |
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| CN103243863A true CN103243863A (en) | 2013-08-14 |
| CN103243863B CN103243863B (en) | 2015-05-13 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314175A (en) * | 2014-10-17 | 2015-01-28 | 南京建工集团有限公司 | Pre-stress tension monitoring-based large-span steel truss arc structure unloading control technology |
| CN105804326A (en) * | 2016-04-07 | 2016-07-27 | 柳州欧维姆结构检测技术有限公司 | Back-and-forth winding type prestressed steel wire rope anchoring system and construction method thereof |
| CN107100091A (en) * | 2017-05-09 | 2017-08-29 | 浙江大学宁波理工学院 | The method of prestress steel twist gauze polymer mortar reinforced steel concrete ribbed arch bridge |
| CN108593453A (en) * | 2018-06-12 | 2018-09-28 | 西南交通大学 | The Combined hydraulic loading device of shield tunnel prototype segment structural test |
| CN109093823A (en) * | 2018-10-19 | 2018-12-28 | 浙江大学宁波理工学院 | The manufacturing method in the penetration type crack of large-size concrete block |
| CN111472282A (en) * | 2020-04-23 | 2020-07-31 | 乔磊 | Prestressed anchorage utensil is used in road bridge construction |
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| WO1999049155A1 (en) * | 1998-03-24 | 1999-09-30 | University Of Ottawa | Retrofitting existing concrete columns by external prestressing |
| CN2493696Y (en) * | 2001-07-31 | 2002-05-29 | 柳州市建筑机械总厂 | Circular anchorage device |
| CN101812924A (en) * | 2010-04-16 | 2010-08-25 | 北京工业大学 | Tensioned anchorage system for prestress steel strand reinforced concrete pillar |
| CN102251684A (en) * | 2011-05-30 | 2011-11-23 | 北京交通大学 | Construction method for circumferential pretensioning steel strand reinforcement circular structure or construction member |
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2013
- 2013-05-22 CN CN201310191537.6A patent/CN103243863B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO1999049155A1 (en) * | 1998-03-24 | 1999-09-30 | University Of Ottawa | Retrofitting existing concrete columns by external prestressing |
| CN2493696Y (en) * | 2001-07-31 | 2002-05-29 | 柳州市建筑机械总厂 | Circular anchorage device |
| CN101812924A (en) * | 2010-04-16 | 2010-08-25 | 北京工业大学 | Tensioned anchorage system for prestress steel strand reinforced concrete pillar |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314175A (en) * | 2014-10-17 | 2015-01-28 | 南京建工集团有限公司 | Pre-stress tension monitoring-based large-span steel truss arc structure unloading control technology |
| CN104314175B (en) * | 2014-10-17 | 2018-05-25 | 南京建工集团有限公司 | Big across steel truss arch structure Unloading Control technology based on prestressed stretch-draw monitoring |
| CN105804326A (en) * | 2016-04-07 | 2016-07-27 | 柳州欧维姆结构检测技术有限公司 | Back-and-forth winding type prestressed steel wire rope anchoring system and construction method thereof |
| CN107100091A (en) * | 2017-05-09 | 2017-08-29 | 浙江大学宁波理工学院 | The method of prestress steel twist gauze polymer mortar reinforced steel concrete ribbed arch bridge |
| CN108593453A (en) * | 2018-06-12 | 2018-09-28 | 西南交通大学 | The Combined hydraulic loading device of shield tunnel prototype segment structural test |
| CN109093823A (en) * | 2018-10-19 | 2018-12-28 | 浙江大学宁波理工学院 | The manufacturing method in the penetration type crack of large-size concrete block |
| CN111472282A (en) * | 2020-04-23 | 2020-07-31 | 乔磊 | Prestressed anchorage utensil is used in road bridge construction |
| CN111472282B (en) * | 2020-04-23 | 2021-03-19 | 乔磊 | Prestressed anchorage utensil is used in road bridge construction |
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