CN105715069A - Method for rapidly reinforcing reinforced concrete eccentric loading column - Google Patents
Method for rapidly reinforcing reinforced concrete eccentric loading column Download PDFInfo
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- CN105715069A CN105715069A CN201610163694.XA CN201610163694A CN105715069A CN 105715069 A CN105715069 A CN 105715069A CN 201610163694 A CN201610163694 A CN 201610163694A CN 105715069 A CN105715069 A CN 105715069A
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- columns
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- section steel
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- reinforced concrete
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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
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- Engineering & Computer Science (AREA)
- 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)
- Rod-Shaped Construction Members (AREA)
Abstract
The invention discloses a method for rapidly reinforcing a reinforced concrete eccentric loading column. The method comprises the following steps: manufacturing a steel channel which is matched with sectional size of the eccentric loading column and used for reinforcing; reserving bolt holes in flanges on two sides of the steel channel; forming bond anchorage regions in surfaces of concrete on two opposite sides in the cross section height direction of the eccentric loading column, and polishing, clearing and flatting the bond anchorage regions; installing the steel channel to a designed position, drilling bolt holes in the surfaces of the bond anchorage regions of the eccentric loading column according to the positions of the bolt holes reserved in the flanges on two sides of the steel channel, and clearing and broaching the holes; smearing an building structure adhesive in the bond anchorage regions, and sleeving the steel channel; injecting the adhesive into the bolt holes in the bond anchorage regions of the eccentric loading column, and inserting paired pull bolts; screwing down nuts at two ends of the paired pull bolts, and well fixing the steel channel and the eccentric loading column. The method is less in adopted reinforcement component, simple in construction steps and short in construction period and can be put into use rapidly, and is capable of greatly improving the bearing capacity, lateral stiffness and seismic ductility of the column, and the column is good in overall performance and high in reliability.
Description
Technical field
The present invention relates to a kind of reinforcement means, a kind of method particularly relating to rapid reinforcement Reinforced Concrete Columns.
Background technology
The reinforced column of a large amount of industry and civil buildings is due to factors such as aging, the damage in design, the defect constructed or life-time service process and disasters, cause the impact safety such as substantial portion of columns bearing capacity is not enough and use the problem of function, in the urgent need to reinforcing.Due to building structure storey-adding reconstruction in such as civil buildings, the machine in industrial premises is set up and overloading in bridge structure so that the Lack of support of original structure, and the bearing capacity of reinforced column is greatly improved in the urgent need to the method by reinforcing.
At present in the actual reinforcing to Reinforced Concrete Columns, widely used is the reinforcement means such as increasing section, subcontracting process, stickup fibre reinforced composites and external prestressing, although this several method all can improve the bearing capacity of Reinforced Concrete Columns, but its shortcoming is also comparatively obvious:
Increasing section is reinforced and is increased generally large to original structure cross section, dead load impact is bigger, and scene needs formwork, wet trade workload is big, curing period, is long, take space more, simultaneously to also having large effect with the use environment of structure, utilize this traditional method to lose more than gain when being reinforced with.Subcontracting process can significantly improve the bearing capacity of component, and concrete is also had certain constraint by angle steel skeleton, but needs welding batten plate lacing when making angle steel skeleton, construction complexity, and assembly is relatively many and improves limited to the ductility of concrete column.Though and paste Building Strengthened by FRP Sheets and can significantly improve the ductility of concrete column, but due to fibre reinforced composites itself, after the stickup number of plies reaches certain quantity, the bearing power increase of coupled columns is limited.External prestressing strengthening method needs tensioning equipment and ground tackle when strengthening construction, and construction technical requirement height and anchoring process certain difficulty.
Summary of the invention
The purpose of the present invention is aiming at the defect that existing reinforcement means exists, a kind of method for rapidly reinforcing that can significantly improve and reinforce Columns bearing capacity and ductility is provided, solve the increasing section existing for prior art and reinforce the increase of original structure cross section generally large, dead load impact is relatively big and scene needs formwork, curing cycle long, it is impossible to the problem come into operation rapidly；The ductility also solving angle steel outer packed strengthening coupled columns improves limited, the problem that construction assembly is more；Solve the problem that bearing power increase after outer viscous Building Strengthened by FRP Sheets is limited simultaneously；And avoid that external prestressing strengthening construction technique requirement is high and anchoring processes the problem acquired a certain degree of difficulty.
In order to solve above-mentioned technical problem, the technical solution used in the present invention is:
A kind of method of rapid reinforcement Reinforced Concrete Columns, it is characterised in that comprise the following steps:
Step one, make with Columns sectional dimension match reinforce channel-section steel, and on the edge of a wing of channel-section steel both sides prepared screw-bolt hole；
Step 2, the two opposite side concrete surfaces in described Columns cross-sectional height direction are bond-anchorage district, and the bond-anchorage district polishing cleaning of Columns is smooth；
Step 3, is mounted to described channel-section steel design attitude, and according to bolt hole position reserved on the edge of a wing of channel-section steel both sides, spuds on the surface, bond-anchorage district of described Columns bolt hole, and hole and reaming clearly；
Step 4, smears construction structure glue in the bond-anchorage district of described Columns, and puts channel-section steel；
Step 5, injecting glue in the bolt hole in the bond-anchorage district of described Columns, and implant wearing bolt；
Step 6, tightens the nut wearing bolt two, is fixed by channel-section steel together with Columns.
As improvement, in described step one, described channel-section steel adopts the method for clod wash or welding to make, and edge of a wing flakiness ratio and the web ratio of height to thickness of channel-section steel both sides are satisfied byRequirement, wherein fyFor channel-section steel yield strength,
And meet:
With b+2mm≤hw-2tf≤b+4mm
Wherein b is Columns cross-sectional width, and h is Columns cross-sectional height, bfAnd tfThe respectively width on the edge of a wing and thickness, hwAnd twThe respectively height of web and thickness.
As improvement, in described step 2, the bond-anchorage district of Columns is two opposite side concrete surfaces of the short transverse along Columns cross section.
As improvement, in described step 3, the hole depth of the bolt hole of Columns is the width of Columns cross section, bolt hole distribution spacing in Columns concrete and diameter and identical on channel-section steel.
As improvement, in described step 4, leaving certain distance between the web do not holed and the concrete surface of unprocessed Columns is box, and the height h of box1It is not more than
As improvement, in described step 5, the screw rod wearing bolt is all threaded.
The medicine have the advantages that the present invention adopts overcoat channel-section steel box concrete structure expansion section reinforcement Columns, without casting concrete, wet trade is decreased while increasing substantially Columns bearing capacity, reduction of erection time, can be used for quickly processing burst fire-disaster and Columns damages and need to be greatly improved in a short time the Columns reinforcing of bearing capacity；Channel-section steel is with the former concrete surface of Columns except brushing construction structure glue is connected simultaneously, anchors also by implanting through bolt, adds the unfailing performance of the overall performance between channel-section steel and the former concrete of Columns and bonding after considerably increasing；Again due to headspace increase Columns depth of section between channel-section steel web and Columns, by restricting after add channel-section steel edge of a wing flakiness ratio and web ratio of height to thickness to meet the requirement of Columns cross section local stability, while Columns bearing capacity is greatly improved, add anti-side rigidity；Frame column simultaneously for Aseismic Design, adopt the effect on channel-section steel edge of a wing during overcoat channel-section steel box concrete structure expansion section reinforcement, except improving ripping circular saw, also correspond to add the stirrup ratio of reinforcement of Columns, the concrete of former Columns is retrained enhancing, now the Compressive Bearing Capacity of reinforced column and shear-carrying capacity are all improved, and energy dissipation capacity and anti-earthquake ductility are consequently increased simultaneously.Visible this method, while increasing substantially the bearing capacity of Columns, anti-side rigidity and anti-earthquake ductility, can guarantee that reinforcing Columns overall performance is good, and unfailing performance is high, and simple to operate, easy construction, engineering cost is relatively low, has a extensive future.
Reinforcement assembly of the present invention is few, and construction procedure is simple, and short construction period can come into operation rapidly；Increase substantially the bearing capacity of post, anti-side rigidity and anti-earthquake ductility；Post overall performance is good, and unfailing performance is high.
Accompanying drawing explanation
Fig. 1 is that Columns of the present invention reinforces floor map；
Fig. 2 is elevation after Columns of the present invention is reinforced.
In figure, 1-Columns, 2-channel-section steel, 3-to wearing bolt, 4-nut, 11-bond-anchorage district, the 21-edge of a wing, 22-web.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is further described.As depicted in figs. 1 and 2, a kind of method of rapid reinforcement Reinforced Concrete Columns, in figure, 1 is the Columns of raw steel reinforced concrete, 11 is the bond-anchorage district of Columns, and 2 is channel-section steel, and 21 is the edge of a wing of channel-section steel, 22 is the web of channel-section steel, and 3 for wearing bolt, and 4 is to the nut wearing bolt.
Embodiment:
A kind of method of rapid reinforcement Reinforced Concrete Columns, comprises the following steps:
Step one, make with Columns 1 sectional dimension match reinforce channel-section steel 2, and on the edge of a wing 21 of channel-section steel 2 both sides prepared screw-bolt hole；
Step 2, the two opposite side concrete surfaces in described Columns 1 cross-sectional height direction are bond-anchorage district 11, and the bond-anchorage district 11 polishing cleaning of Columns 1 is smooth；
Step 3, is mounted to described channel-section steel 2 design attitude, and according to bolt hole position reserved on the edge of a wing 21 of channel-section steel 2 both sides, spuds on the surface, bond-anchorage district 11 of described Columns 1 bolt hole, and hole and reaming clearly；
Step 4, smears construction structure glue in the bond-anchorage district 11 of described Columns 1, and puts channel-section steel 2；
Step 5, injecting glue in the bolt hole in the bond-anchorage district 11 of described Columns 1, and implant wearing bolt 3；
Step 6, tightens the nut 4 wearing bolt 3 two, is fixed by channel-section steel 2 together with Columns 1.
Described channel-section steel 2 adopts the method for clod wash or welding to make, and the edge of a wing 21 flakiness ratio and web 22 ratio of height to thickness of channel-section steel 2 both sides are satisfied byRequirement, wherein fyFor channel-section steel yield strength,
And meet:
With b+2mm≤hw-2tf≤b+4mm
Wherein b is Columns 1 cross-sectional width, and h is Columns 1 cross-sectional height, bfAnd tfThe respectively width on the edge of a wing 21 and thickness, hwAnd twThe respectively height of web 22 and thickness.
The bond-anchorage district 11 of Columns 1 is two opposite side concrete surfaces of the short transverse along Columns 1 cross section.
The hole depth of the bolt hole of Columns 1 is the width of Columns 1 cross section, bolt hole distribution spacing in Columns 1 concrete and diameter and identical on channel-section steel 2.The screw rod wearing bolt 3 is all threaded.
Leaving certain distance between the web 22 do not holed and the concrete surface of unprocessed Columns 1 is box, and the height h of box1It is not more than
Claims (6)
1. the method for a rapid reinforcement Reinforced Concrete Columns, it is characterised in that comprise the following steps:
Step one, makes and matches the channel-section steel (2) reinforced with Columns (1) sectional dimension, and at the upper prepared screw-bolt hole in the edge of a wing (21) of channel-section steel (2) both sides；
Step 2, the two opposite side concrete surfaces in described Columns (1) cross-sectional height direction are bond-anchorage district (11), and bond-anchorage district (11) the polishing cleaning of Columns (1) is smooth；
Step 3, described channel-section steel (2) is mounted to design attitude, and the upper reserved bolt hole position, the edge of a wing (21) according to channel-section steel (2) both sides, spud in bolt hole on bond-anchorage district (11) surface of described Columns (1), and hole and reaming clearly；
Step 4, smears construction structure glue in the bond-anchorage district (11) of described Columns (1), and puts channel-section steel (2)；
Step 5, injecting glue in the bolt hole in the bond-anchorage district (11) of described Columns (1), and implant wearing bolt (3)；
Step 6, tightens the nut (4) wearing bolt (3) two, channel-section steel (2) and Columns (1) is fixed together.
2. the method for a kind of rapid reinforcement Reinforced Concrete Columns as claimed in claim 1, it is characterized in that: in described step one, described channel-section steel (2) adopts the method for clod wash or welding to make, and the edge of a wing (21) flakiness ratio and web (22) ratio of height to thickness of channel-section steel (2) both sides are satisfied byRequirement, wherein fyFor channel-section steel yield strength,
And meet:
With b+2mm≤hw-2tf≤b+4mm
Wherein b is Columns (1) cross-sectional width, and h is Columns (1) cross-sectional height, bfAnd tfThe respectively width of the edge of a wing (21) and thickness, hwAnd twThe respectively height of web (22) and thickness.
3. the method for a kind of rapid reinforcement Reinforced Concrete Columns as claimed in claim 1, it is characterized in that: in described step 2, the bond-anchorage district (11) of Columns (1) is two opposite side concrete surfaces of the short transverse along Columns (1) cross section.
4. the method for a kind of rapid reinforcement Reinforced Concrete Columns as claimed in claim 1, it is characterized in that: in described step 3, the hole depth of the bolt hole of Columns (1) is the width of Columns (1) cross section, and bolt hole distribution spacing in Columns (1) concrete and diameter and channel-section steel (2) are upper identical.
5. the method for a kind of rapid reinforcement Reinforced Concrete Columns as claimed in claim 1, it is characterized in that: in described step 4, leaving certain distance between the web (22) do not holed and the concrete surface of unprocessed Columns (1) is box, and the height h of box1It is not more than
6. the method for a kind of rapid reinforcement Reinforced Concrete Columns as claimed in claim 1, it is characterised in that: in described step 5, the screw rod wearing bolt (3) is all threaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610163694.XA CN105715069B (en) | 2016-03-22 | 2016-03-22 | A kind of method of rapid reinforcement Reinforced Concrete Columns |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610163694.XA CN105715069B (en) | 2016-03-22 | 2016-03-22 | A kind of method of rapid reinforcement Reinforced Concrete Columns |
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| CN105715069A true CN105715069A (en) | 2016-06-29 |
| CN105715069B CN105715069B (en) | 2017-09-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112709220A (en) * | 2020-12-24 | 2021-04-27 | 上海建工四建集团有限公司 | Deviation rectifying method for steel pipe column deviation by reverse construction method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030163960A1 (en) * | 2002-03-04 | 2003-09-04 | Douglas Hadden | Utility standard repair devices and methods |
| KR20140011045A (en) * | 2012-07-17 | 2014-01-28 | 주식회사 라지 | Structure for strengthening of bridge column structures |
| US20150345171A1 (en) * | 2013-02-12 | 2015-12-03 | Composite Structural Systems, LLC | Piling extender |
| CN105239787A (en) * | 2015-08-28 | 2016-01-13 | 河海大学 | Full-assembled concrete frame reinforcing apparatus and construction method thereof |
-
2016
- 2016-03-22 CN CN201610163694.XA patent/CN105715069B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030163960A1 (en) * | 2002-03-04 | 2003-09-04 | Douglas Hadden | Utility standard repair devices and methods |
| KR20140011045A (en) * | 2012-07-17 | 2014-01-28 | 주식회사 라지 | Structure for strengthening of bridge column structures |
| US20150345171A1 (en) * | 2013-02-12 | 2015-12-03 | Composite Structural Systems, LLC | Piling extender |
| CN105239787A (en) * | 2015-08-28 | 2016-01-13 | 河海大学 | Full-assembled concrete frame reinforcing apparatus and construction method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112709220A (en) * | 2020-12-24 | 2021-04-27 | 上海建工四建集团有限公司 | Deviation rectifying method for steel pipe column deviation by reverse construction method |
| CN112709220B (en) * | 2020-12-24 | 2023-02-14 | 上海建工四建集团有限公司 | Deviation rectifying method for steel pipe column deviation by reverse construction method |
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| CN105715069B (en) | 2017-09-29 |
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