CN105569368A - Annular steel plate strengthening device for reinforced concrete column with circular cross section - Google Patents
Annular steel plate strengthening device for reinforced concrete column with circular cross section Download PDFInfo
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- CN105569368A CN105569368A CN201510942948.3A CN201510942948A CN105569368A CN 105569368 A CN105569368 A CN 105569368A CN 201510942948 A CN201510942948 A CN 201510942948A CN 105569368 A CN105569368 A CN 105569368A
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- reinforced concrete
- steel plate
- concrete column
- circular
- annular steel
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
- E04G23/0225—Increasing or restoring the load-bearing capacity of building construction elements of circular building elements, e.g. by circular bracing
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- Architecture (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
The invention discloses an annular steel plate strengthening device for a reinforced concrete column with a circular cross section. The annular steel plate strengthening device comprises two semicircular steel plates, wherein connecting components are welded to the outer sides of the two side edges of the semicircular steel plates; each connecting component is a steel cuboid member, bolt holes are formed in the connecting components, the two semicircular steel plates are symmetrically buckled to the outer side of a reinforced concrete column to be strengthened, and bolts are used for penetrating through the bolt holes, so that the connecting components of the two semicircular steel plates are connected; the bolts are fastened through nuts, so that the annular steel plate strengthening device for the reinforced concrete column with the circular cross section is formed. According to the annular steel plate strengthening device disclosed by the invention, hooped pulling stress is exerted to the annular steel plates through fastening anchor bolts, so that the annular steel plates exert radial compressive stress on the circular reinforced concrete column, concrete is in a state of being stressed in three directions, and the ultimate compressive strength of the concrete and the compressive carrying capacity of the strengthened members can be effectively improved. The members of the annular steel plate strengthening device disclosed by the invention are machined in a plant, the workload of the construction site is small, and the construction is convenient.
Description
Technical field
The invention belongs to Structural Engineering reinforcing technique field, particularly a kind of doughnut-shaped steel plate bracing means for Reinforced Concrete Column with Circular Section, this doughnut-shaped steel plate bracing means is particularly useful for the reinforcing of reinforced concrete circular pier stud in bridge engineering.
Background technology
The reinforcement means of reinforced concrete circular post conventional in engineering has Enlargement of Section, affixing carbon fabric method and external debts model method.Wherein, Enlargement of Section, effectively can improve the supporting capacity of component, but must carry out concretely building, vibrating and maintenance work in scene, and construction is inconvenient, increases the size of steel concrete, reduces discharge area under effective usable floor area or bridge; Affixing carbon fabric method, can improve the supporting capacity of steel concrete, but increase rate is less, maximum about 10%, and durability is not enough, after the filametntary glue of bonded carbon is aging, carbon cloth easily broken, come off; Reinforced with external steel encased, needs to be in the milk at the scene or viscose glue water, complicated construction technique.In construction work and bridge engineering, the proportion that component dead weight accounts for design load is general all more than 60%, even reach more than 90% individually, the material that the reinforcement means such as Enlargement of Section, affixing carbon fabric method and external debts model method apply only works to mobile load, geological process etc. that structure after reinforcing is born, and to be applied on component, account for the highest deadweight of design load proportion and inoperative.
Present invention is directed at this, a kind of doughnut-shaped steel plate bracing means for Reinforced Concrete Column with Circular Section is proposed, in work progress, a radial compressive stress is applied to circular reinforced concrete post, to form entirety jointly stressed with being reinforced component to guarantee bracing means, the concrete being reinforced component can be made to be in three dimension stress state, effectively improving the supporting capacity being reinforced component while, effectively can improve and be reinforced the compressive strength of concrete members and the supporting capacity of component, bracing means not only works under follow-up load action, the deadweight of component having been born to structure is also worked, simple structure, easy construction.
Chinese invention patent publication number is " Reinforced Concrete Circular Cylinder bracing means and the reinforcement means " of CN104060848A, disclosed method is provided with first paragraph encased steel plate from top to bottom outside Reinforced Concrete Circular Cylinder, second segment encased steel plate and the 3rd section of encased steel plate, described first paragraph encased steel plate two ends are provided with four grout holes, described second segment encased steel plate upper end is provided with two grout holes, described first paragraph encased steel plate, second segment encased steel plate and the steel pipe of a 3rd section of encased steel plate welding formation cuff outside Reinforced Concrete Circular Cylinder, grouting material is provided with between described steel pipe and Reinforced Concrete Circular Cylinder.Bracing means disclosed in the method only works under follow-up load action, and the deadweight of component having been born to structure is inoperative, and on-the-spot needs welds and grouting, complex process.
Chinese invention patent publication number
for" the prestressing force gusset bracing means " of CN103669635A, disclosed device is a kind of prestressing force gusset bracing means, belongs to building structure aseismatic field of reinforcement.It mainly comprises four pieces of gussets, connector and high-strength prestressed bolt, the two ends of every block gusset are fixed wtih connector, and adjacent two pieces of gussets to be joined together to form a closed loop bracing means suitable with being reinforced member section by connector by high-strength prestressed bolt.This device is suitable for using rectangular section column.
Summary of the invention
The object of the invention is, for existing Reinforced Concrete Reinforcement method Problems existing, to provide a kind of doughnut-shaped steel plate bracing means for Reinforced Concrete Column with Circular Section.
Technical scheme of the present invention:
A kind of doughnut-shaped steel plate bracing means for Reinforced Concrete Column with Circular Section, comprise two semi-circular sheet steel, welded connections outside two sides of semi-circular sheet steel, connector is a steel cuboid component, connector has bolt hole, two semi-circular sheet steel symmetries are buckled in and wait to reinforce outside reinforced concrete post, by bolt passing through bolt hole, the connector of two semi-circular sheet steel is connected, by nut fastening bolt, form the doughnut-shaped steel plate bracing means being used for Reinforced Concrete Column with Circular Section.
Described semi-circular sheet steel inner radius equals the radius waiting to reinforce reinforced concrete post, and the arc chord angle of each semi-circular sheet steel adopts 178 ~ 179 °.
Quantity >=2 of the described bolt that described connector is corresponding.
Advantage of the present invention:
(1) apparatus of the present invention apply a hoop tensile stress by crab-bolt is fastening to doughnut-shaped steel plate, hoop steel plate is made to apply a radial compressive stress to circular reinforced concrete post thus, make concrete be in triaxial stress state, effectively can improve concrete ultimate compressive strength and the resistance to compression supporting capacity being reinforced component.
(2) component of apparatus of the present invention is all in factory process, the few and easy construction of job site workload.
Accompanying drawing explanation
Fig. 1 is the plan view of the doughnut-shaped steel plate bracing means for Reinforced Concrete Column with Circular Section of the present invention.
Fig. 2 is the elevation of the doughnut-shaped steel plate bracing means for Reinforced Concrete Column with Circular Section of the present invention.
Fig. 3 is the axonometric drawing of the connector of the doughnut-shaped steel plate bracing means for Reinforced Concrete Column with Circular Section of the present invention.
Fig. 4 is the plan view for wherein one piece of semi-circular sheet steel of the doughnut-shaped steel plate bracing means of Reinforced Concrete Column with Circular Section in the embodiment of the present invention.
Mark in figure: 1-semi-circular sheet steel; 2-connector; 3-bolt; 4-nut; 5-waits to reinforce reinforced concrete post; 6-bolt hole.
Detailed description of the invention
embodiment:
The present embodiment with radius be 0.6m wait reinforce reinforced concrete post for reinforce object, be described in further detail below in conjunction with accompanying drawing:
As Figure 1-4, a kind of doughnut-shaped steel plate bracing means for Reinforced Concrete Column with Circular Section, comprise: two semi-circular sheet steel 1, welded connections 2 outside two sides of semi-circular sheet steel 1, connector 2 is steel cuboid components, connector 2 has bolt hole 6, two semi-circular sheet steel 1 symmetries are buckled in and wait to reinforce outside reinforced concrete post 5, with bolt 3 through bolt hole 6, the connector 2 of two semi-circular sheet steel 1 is connected, by nut 4 fastening bolt 3, form a kind of doughnut-shaped steel plate bracing means for Reinforced Concrete Column with Circular Section.
Described semi-circular sheet steel 1 inner radius equals the radius waiting to reinforce reinforced concrete post 5, and be 0.6m, the height of semi-circular sheet steel 1 gets 0.3m, and the arc chord angle of each semi-circular sheet steel 1 adopts 178 °.
The quantity of the described bolt 3 of described connector 2 correspondence is 2.
What utilize above-mentioned doughnut-shaped steel plate bracing means pair radius to be 0.6m waits that reinforcing reinforced concrete post 5 reinforces, and concrete steps are:
(1) at factory process semi-circular sheet steel 1 and connector 2, semi-circular sheet steel 1 and connector 2 are welded into entirety, the position auger shell keyhole 6 of erection bolt 3 on connector 2.
(2) at building-site, the foreign material reinforcing reinforced concrete post 5 surface are waited with grinder buffing, and blow off with compressed air and wait to reinforce reinforced concrete post 5 surperficial floating dust, with cement mortar repair wait to reinforce reinforced concrete post 5 surface honeycomb, cavity and defect.
(3), certainly waiting to reinforce the bottom of reinforced concrete post 5, two pieces of semi-circular sheet steel 1 are buckled in the outside waiting to reinforce reinforced concrete post 5, after in place, plug bolt 3, screw on nut 4, preliminary fastening bolt 3, is fixed on doughnut-shaped steel plate bracing means and waits to reinforce on reinforced concrete post 5.
(4) determine that the clear distance of adjacent two doughnut-shaped steel plate bracing means gets 0.2cm, successively other doughnut-shaped steel plate bracing means are upwards installed again, connector 2, bolt 3 in the vertical direction of neighbouring doughnut-shaped steel plate bracing means can not be in same straight line, stagger 90 °.
(5) when after reinforcing the whole doughnut-shaped steel plate bracing means on reinforced concrete post 5 and be in position, the bolt 3 of fastening annular steel plate reinforcement device is to design pulling force successively from top to bottom, and semi-circular sheet steel 1 is treated reinforced steel concrete post 5 simultaneously and applied radial compressive stress.
(6) doughnut-shaped steel plate bracing means all fastening after, carry out the preservative treatment of apparatus surface, namely complete strengthening construction.
Specific embodiment described in the application is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Claims (3)
1. the doughnut-shaped steel plate bracing means for Reinforced Concrete Column with Circular Section, it is characterized in that this device comprises two semi-circular sheet steel (1), welded connections (2) outside two sides of each described semi-circular sheet steel (1), described connector (2) is a steel cuboid component, described connector (2) has bolt hole (6), two described semi-circular sheet steel (1) symmetries are buckled in and wait to reinforce reinforced concrete post (5) outside, with bolt (3) through described bolt hole (6), the connector (2) of two described semi-circular sheet steel (1) is connected, by the fastening described bolt (3) of nut (4), namely the described doughnut-shaped steel plate bracing means for Reinforced Concrete Column with Circular Section is obtained.
2. a kind of doughnut-shaped steel plate bracing means for Reinforced Concrete Column with Circular Section according to claim 1, it is characterized in that described semi-circular sheet steel (1) inner radius equals the radius waiting to reinforce reinforced concrete post (5), the arc chord angle of each described semi-circular sheet steel (1) adopts 178 ~ 179 °.
3. a kind of doughnut-shaped steel plate bracing means for Reinforced Concrete Column with Circular Section according to claim 1, is characterized in that quantity >=2 of the corresponding described bolt (3) of each described connector (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510942948.3A CN105569368A (en) | 2015-12-16 | 2015-12-16 | Annular steel plate strengthening device for reinforced concrete column with circular cross section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510942948.3A CN105569368A (en) | 2015-12-16 | 2015-12-16 | Annular steel plate strengthening device for reinforced concrete column with circular cross section |
Publications (1)
| Publication Number | Publication Date |
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| CN105569368A true CN105569368A (en) | 2016-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510942948.3A Pending CN105569368A (en) | 2015-12-16 | 2015-12-16 | Annular steel plate strengthening device for reinforced concrete column with circular cross section |
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| CN (1) | CN105569368A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108360837A (en) * | 2018-03-14 | 2018-08-03 | 成都理工大学 | A kind of bracing means, concrete strengthening structure and confined concrete reinforcement means |
| CN112983044A (en) * | 2021-04-22 | 2021-06-18 | 江西汉唐特种工程技术有限公司 | Rectangular concrete member outsourcing shaped steel is consolidated and is used fastener |
| US20220178158A1 (en) * | 2020-12-07 | 2022-06-09 | Fuzhou University | Device and method for reinforcing round section wood beam by combination of prestressed frp sheet and high strength steel wire rope |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10292640A (en) * | 1997-04-15 | 1998-11-04 | Shimizu Corp | Column-beam joint part reinforcing method |
| JP2001329700A (en) * | 2000-05-23 | 2001-11-30 | Dai Nippon Construction | Temporary jointing method for column during building demolition in jack system |
| CN202672766U (en) * | 2012-05-18 | 2013-01-16 | 河南省电力公司郑州供电公司 | Concrete pole repair strengthening hoop |
| CN103669635A (en) * | 2013-12-24 | 2014-03-26 | 海南大学 | Pre-stress angle steel plate reinforcing device |
| CN104389438A (en) * | 2014-12-10 | 2015-03-04 | 华北水利水电大学 | Aseismic strengthening structure and method for concrete column |
| CN204663119U (en) * | 2015-05-14 | 2015-09-23 | 国家电网公司 | Concrete pole reinforcing device |
-
2015
- 2015-12-16 CN CN201510942948.3A patent/CN105569368A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10292640A (en) * | 1997-04-15 | 1998-11-04 | Shimizu Corp | Column-beam joint part reinforcing method |
| JP2001329700A (en) * | 2000-05-23 | 2001-11-30 | Dai Nippon Construction | Temporary jointing method for column during building demolition in jack system |
| CN202672766U (en) * | 2012-05-18 | 2013-01-16 | 河南省电力公司郑州供电公司 | Concrete pole repair strengthening hoop |
| CN103669635A (en) * | 2013-12-24 | 2014-03-26 | 海南大学 | Pre-stress angle steel plate reinforcing device |
| CN104389438A (en) * | 2014-12-10 | 2015-03-04 | 华北水利水电大学 | Aseismic strengthening structure and method for concrete column |
| CN204663119U (en) * | 2015-05-14 | 2015-09-23 | 国家电网公司 | Concrete pole reinforcing device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108360837A (en) * | 2018-03-14 | 2018-08-03 | 成都理工大学 | A kind of bracing means, concrete strengthening structure and confined concrete reinforcement means |
| US20220178158A1 (en) * | 2020-12-07 | 2022-06-09 | Fuzhou University | Device and method for reinforcing round section wood beam by combination of prestressed frp sheet and high strength steel wire rope |
| US11674323B2 (en) * | 2020-12-07 | 2023-06-13 | Fuzhou University | Device and method for reinforcing round section wood beam by combination of prestressed FRP sheet and high strength steel wire rope |
| CN112983044A (en) * | 2021-04-22 | 2021-06-18 | 江西汉唐特种工程技术有限公司 | Rectangular concrete member outsourcing shaped steel is consolidated and is used fastener |
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Application publication date: 20160511 |