CN105735666A - Method for reinforcing concrete column rapidly - Google Patents

Method for reinforcing concrete column rapidly Download PDF

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Publication number
CN105735666A
CN105735666A CN201610163639.0A CN201610163639A CN105735666A CN 105735666 A CN105735666 A CN 105735666A CN 201610163639 A CN201610163639 A CN 201610163639A CN 105735666 A CN105735666 A CN 105735666A
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China
Prior art keywords
concrete column
channel
steel
big
channel bar
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CN201610163639.0A
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CN105735666B (en
Inventor
卢亦焱
胡玲
李杉
沈炫
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Wuhan University WHU
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Wuhan University WHU
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00Working measures on existing buildings
    • E04G23/02Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
    • E04G23/0218Increasing or restoring the load-bearing capacity of building construction elements

Abstract

The invention discloses a method for reinforcing a concrete column rapidly. The method for reinforcing the concrete column rapidly comprises the steps that small channel steel and big channel steel which are matched with the concrete column in sectional dimension and used for reinforcement are manufactured, and bolt holes are reserved in flanges of the small channel steel and the big channel steel correspondingly; a bonding and anchoring area of the concrete column is polished and cleaned to be flat; the small channel steel is installed in the design position, corresponding through bolt holes are drilled in the surface of the bonding and anchoring area of the concrete column, and the through bolt holes are cleaned; the bonding and anchoring area is sleeved with the small channel steel after a building structural adhesive is smeared on the bonding and anchoring area, and the flange of the small channel steel is tightly attached to the bonding and anchoring area; the building structural adhesive is smeared on a second bonding and anchoring area of the small channel steel, the second bonding and anchoring area is sleeved with the big channel steel open in the opposite direction, and the flange of the big channel steel is tightly attached to the second bonding and anchoring area; the adhesive is injected into the through bolt holes, and opposite through bolts are embedded in the through bolt holes; and nuts of the opposite through bolts are screwed, so that the small channel steel, the big channel steel and the concrete column are fixed together. According to the method for reinforcing the concrete column rapidly, the construction steps are simple, and the construction period is short; the bearing capacity, the lateral stiffness and the seismic ductility of the column can be greatly improved; and the overall performance of the column is good, and the reliability is high.

Description

A kind of method of rapid reinforcement concrete column
Technical field
The present invention relates to a kind of reinforcement means, a kind of method particularly relating to rapid reinforcement concrete column.
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 column, 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 column, 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 concrete column 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 concrete column, it is characterised in that comprise the following steps:
Step one, makes the channel bar of the reinforcing matched with concrete column sectional dimension and big channel-section steel, and on the edge of a wing of channel bar and big channel-section steel both sides equal prepared screw-bolt hole;
Step 2, the bond-anchorage district polishing cleaning of concrete column is smooth;
Step 3, installs channel bar to design attitude, and according to bolt hole position reserved on the edge of a wing of channel bar both sides, spuds on the surface, bond-anchorage district of concrete column and run through bolt hole accordingly, and clear hole;
Step 4, first smears construction structure glue in the bond-anchorage district of concrete column, puts channel bar, and the edge of a wing of described channel bar both sides and bond-anchorage district are adjacent to;Then smearing construction structure glue in the bond-anchorage district two of the edge of a wing outer surface of channel bar both sides, the big channel-section steel that on set, opening direction is contrary outside channel bar, the edge of a wing of described big channel-section steel both sides and bond-anchorage district two are adjacent to;
Step 5, to running through in bolt hole injecting glue and implanting wearing bolt on concrete column;
Step 6, tightens the nut to wearing bolt and channel bar, big channel-section steel and concrete column is fixed together.
As improvement, in described step one, channel bar and big channel-section steel all adopt the method for clod wash or welding to make, and channel bar and the big channel-section steel edge of a wing generous when web ratio of height to thickness are satisfied byRequirement, wherein fyFor channel-section steel yield strength, and meet:
b+2mm≤hw-2tf≤b+4mm;
hw+ 2mm≤hw′-2tf′≤hw+4mm;
Wherein b is concrete column cross-sectional width, and h is concrete column cross-sectional height, hwAnd hwThe web height of ' respectively channel bar and big channel-section steel, twAnd twThe web thickness of ' respectively channel bar and big channel-section steel, bfAnd bfThe flange width of ' respectively channel bar and big channel-section steel, tfAnd tfThe edge of a wing thickness of ' respectively channel bar and big channel-section steel.
As improvement, in described step 2, the bond-anchorage district of described concrete column is the concrete surface along concrete column cross section short transverse two opposite side.
As improvement, in described step 3, it is concrete column cross-sectional width that described concrete column runs through the bolt hole degree of depth, runs through bolt hole distribution spacing in concrete and diameter identical with bolt hole distribution reserved on channel bar and big channel-section steel.
As improvement, in described step 4, the non-drilled web of channel bar and big channel-section steel is equal and leaves certain distance between the undressed concrete surface of concrete column is box, and box height h1With h2It is satisfied by being not more than
As improvement, in described step 5, all it is threaded wearing bolt, and described to wearing the spiro rod length of bolt on the edge of a wing through concrete column, channel bar and big channel-section steel both sides, and after tightening nuts, the screw rod wearing bolt is still left the silk mouth length of 2~3mm.
The medicine have the advantages that
The present invention adopts overcoat channel bar to become box concrete structure expansion section reinforcement concrete column with big channel-section steel, without casting concrete, wet trade is decreased while increasing substantially concrete column bearing capacity, reduction of erection time, can be used for quickly processing burst fire-disaster and concrete column is damaged and the reinforcement of concrete post of bearing capacity need to be greatly improved in a short time;Simultaneously the channel bar edge of a wing and concrete column surface and greatly channel-section steel with the channel bar edge of a wing except brushing construction structure glue is connected, anchor wearing bolt also by implanting, after considerably increasing, add the unfailing performance of channel bar, overall performance between big channel-section steel and concrete column and bonding;Again due to headspace increase concrete column depth of section between channel-section steel web and concrete column, 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 concrete column cross section local stability, while former concrete column bearing capacity is greatly improved, add anti-side rigidity;Frame column simultaneously for Aseismic Design, adopt the effect of channel-section steel 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 former concrete column, enhance the constraint of the core concrete to concrete column, after now reinforcing, the Compressive Bearing Capacity of concrete 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 concrete column, anti-side rigidity and anti-earthquake ductility, can guarantee that reinforced concrete column 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 reinforcement of concrete post floor map of the present invention;
Fig. 2 is elevation after reinforcement of concrete post of the present invention.
In figure, 1-concrete column, 2-channel bar, 3 big channel-section steels, 4-to wearing bolt, 5-nut, 11-bond-anchorage district, 21-bond-anchorage district two.
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 concrete column, in figure, 1 is former concrete column, 11 is the bond-anchorage district of concrete column, and 2 is channel bar, and 21 is the bond-anchorage district two on channel bar, 3 is big channel-section steel, and 4 for wearing bolt, and 5 is to the nut wearing bolt.
Embodiment:
A kind of method of rapid reinforcement concrete column, it is characterised in that comprise the following steps:
Step one, makes channel bar 2 and the big channel-section steel 3 of the reinforcing matched with concrete column 1 sectional dimension, and on the edge of a wing of channel bar 2 and big channel-section steel 3 both sides equal prepared screw-bolt hole;
Step 2, the bond-anchorage district 11 polishing cleaning of concrete column 1 is smooth;
Step 3, installs channel bar 2 to design attitude, and according to bolt hole position reserved on the edge of a wing of channel bar 2 both sides, spuds on the surface, bond-anchorage district 11 of concrete column 1 and run through bolt hole accordingly, and clear hole;
Step 4, first smears construction structure glue in the bond-anchorage district 11 of concrete column 1, puts channel bar 2, and the edge of a wing of described channel bar 2 both sides and bond-anchorage district 11 are adjacent to;Then smearing construction structure glue in the bond-anchorage district 2 21 of the edge of a wing outer surface of channel bar 2 both sides, the big channel-section steel 3 that on set, opening direction is contrary outside channel bar 2, the edge of a wing of described big channel-section steel 3 both sides and bond-anchorage district 2 21 are adjacent to;
Step 5, to running through in bolt hole injecting glue and implanting wearing bolt 4 on concrete column 1;
Step 6, tightens the nut 5 to wearing bolt 4 and channel bar 2, big channel-section steel 3 and concrete column 1 is fixed together.
Described channel bar 2 and big channel-section steel 3 all adopt the method for clod wash or welding to make, and channel bar 2 and big channel-section steel 3 edge of a wing generous when web ratio of height to thickness is satisfied byRequirement, wherein fyFor channel-section steel yield strength, and meet:
b+2mm≤hw-2tf≤b+4mm;
hw+2mm≤hw′-2tf′≤hw+4mm;
Wherein b is concrete column 1 cross-sectional width, and h is concrete column 1 cross-sectional height, hwAnd hwThe web height of ' respectively channel bar 2 and big channel-section steel 3, twAnd twThe web thickness of ' respectively channel bar 2 and big channel-section steel 3, bfAnd bfThe flange width of ' respectively channel bar 2 and big channel-section steel 3, tfAnd tfThe edge of a wing thickness of ' respectively channel bar 2 and big channel-section steel 3.
The bond-anchorage district 11 of described concrete column 1 is the concrete surface along concrete column 1 cross section short transverse two opposite side.
It is concrete column 1 cross-sectional width that described concrete column 1 runs through the bolt hole degree of depth, runs through bolt hole distribution spacing in concrete and diameter identical with bolt hole distribution reserved on channel bar 2 and big channel-section steel 3.All it is threaded wearing bolt 4, and described to wearing the spiro rod length of bolt 4 on the edge of a wing through concrete column 1, channel bar 2 and big channel-section steel 3 both sides, and after tightening nuts 5, the screw rod wearing bolt 4 is still left the silk mouth length of 2~3mm.
The non-drilled web of channel bar 2 and big channel-section steel 3 is all and to leave certain distance between the undressed concrete surface of concrete column 1 be box, and box height h1With h2It is satisfied by being not more than

Claims (6)

1. the method for a rapid reinforcement concrete column, it is characterised in that comprise the following steps:
Step one, make channel bar (2) and the big channel-section steel (3) of the reinforcing matched with concrete column (1) sectional dimension, and on the edge of a wing of channel bar (2) and big channel-section steel (3) both sides equal prepared screw-bolt hole;
Step 2, bond-anchorage district (11) the polishing cleaning of concrete column (1) is smooth;
Step 3, channel bar (2) is installed to design attitude, and according to bolt hole position reserved on the edge of a wing of channel bar (2) both sides, spud on bond-anchorage district (11) surface of concrete column (1) and run through bolt hole accordingly, and clear hole;
Step 4, first smears construction structure glue in the bond-anchorage district (11) of concrete column (1), puts channel bar (2), and the edge of a wing of described channel bar (2) both sides and bond-anchorage district (11) are adjacent to;Then construction structure glue is smeared in the bond-anchorage district two (21) of the edge of a wing outer surface of channel bar (2) both sides, putting, in channel bar (2) outside, the big channel-section steel (3) that opening direction is contrary, the edge of a wing of described big channel-section steel (3) both sides and bond-anchorage district two (21) are adjacent to;
Step 5, to running through in bolt hole injecting glue and implanting wearing bolt (4) on concrete column (1);
Step 6, tightens and channel bar (2), big channel-section steel (3) and concrete column (1) is fixed together by the nut (5) wearing bolt (4).
2. the method for a kind of rapid reinforcement concrete column as claimed in claim 1, it is characterized in that: in described step one, channel bar (2) and big channel-section steel (3) all adopt the method for clod wash or welding to make, and channel bar (2) and big channel-section steel (3) edge of a wing generous when web ratio of height to thickness are satisfied byRequirement, wherein fyFor channel-section steel yield strength, and meet:
h ≤ b f - t w ≤ 4 3 h , b + 2 m m ≤ h w - 2 t f ≤ b + 4 m m ;
h ≤ b f ′ - t w ′ ≤ 4 3 h , h w + 2 m m ≤ h w ′ - 2 t f ′ ≤ h w + 4 m m ;
Wherein b is concrete column (1) cross-sectional width, and h is concrete column (1) cross-sectional height, hwAnd hwThe web height of ' respectively channel bar (2) and big channel-section steel (3), twAnd twThe web thickness of ' respectively channel bar (2) and big channel-section steel (3), bfAnd bfThe flange width of ' respectively channel bar (2) and big channel-section steel (3), tfAnd tfThe edge of a wing thickness of ' respectively channel bar (2) and big channel-section steel (3).
3. the method for a kind of rapid reinforcement concrete column as claimed in claim 1, it is characterized in that: in described step 2, the bond-anchorage district (11) of described concrete column (1) is the concrete surface along concrete column (1) cross-sectional height direction two opposite side.
4. the method for a kind of rapid reinforcement concrete column as claimed in claim 1, it is characterized in that: in described step 3, it is concrete column (1) cross-sectional width that described concrete column (1) runs through the bolt hole degree of depth, runs through bolt hole distribution spacing in concrete and diameter identical with the upper reserved bolt hole distribution of channel bar (2) and big channel-section steel (3).
5. the method for a kind of rapid reinforcement concrete column as claimed in claim 1, it is characterized in that: in described step 4, the non-drilled web of channel bar (2) and big channel-section steel (3) is all and to leave certain distance between concrete column (1) undressed concrete surface be box, and box height h1With h2It is satisfied by being not more than
6. the method for a kind of rapid reinforcement concrete column as claimed in claim 1, it is characterized in that: in described step 5, all it is threaded wearing bolt (4), and it is described to wearing the spiro rod length of bolt (4) on the edge of a wing through concrete column (1), channel bar (2) and big channel-section steel (3) both sides, and after tightening nuts (5), the screw rod wearing bolt (4) is still left the silk mouth length of 2~3mm.
CN201610163639.0A 2016-03-22 2016-03-22 A kind of method of rapid reinforcement concrete column Active CN105735666B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108547468A (en) * 2018-03-27 2018-09-18 福建工程学院 A kind of reinforced steel concrete column and its construction method
GB2572999A (en) * 2018-04-19 2019-10-23 Tectonic Facades Ltd Strengthening assemblies

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3755115B2 (en) * 1996-09-18 2006-03-15 大成建設株式会社 Reinforcing existing pillars
CN102561719A (en) * 2011-12-29 2012-07-11 吉林建筑工程学院 Reinforced concrete beam reinforced by bonding steel plate
CN202416897U (en) * 2011-12-21 2012-09-05 北京市房地产科学技术研究所 Shock-proof reinforcing steel ring beam for masonry house
JP2013189845A (en) * 2012-02-14 2013-09-26 Ihi Corp Repair structure of steel material
CN103388407B (en) * 2013-07-26 2015-07-29 河海大学 The method of top layer prestressing force embedded technology reinforced concrete member and mechanical device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3755115B2 (en) * 1996-09-18 2006-03-15 大成建設株式会社 Reinforcing existing pillars
CN202416897U (en) * 2011-12-21 2012-09-05 北京市房地产科学技术研究所 Shock-proof reinforcing steel ring beam for masonry house
CN102561719A (en) * 2011-12-29 2012-07-11 吉林建筑工程学院 Reinforced concrete beam reinforced by bonding steel plate
JP2013189845A (en) * 2012-02-14 2013-09-26 Ihi Corp Repair structure of steel material
CN103388407B (en) * 2013-07-26 2015-07-29 河海大学 The method of top layer prestressing force embedded technology reinforced concrete member and mechanical device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108547468A (en) * 2018-03-27 2018-09-18 福建工程学院 A kind of reinforced steel concrete column and its construction method
GB2572999A (en) * 2018-04-19 2019-10-23 Tectonic Facades Ltd Strengthening assemblies

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