CN105696805A - Brick column reinforcement method - Google Patents
Brick column reinforcement method Download PDFInfo
- Publication number
- CN105696805A CN105696805A CN201610181674.5A CN201610181674A CN105696805A CN 105696805 A CN105696805 A CN 105696805A CN 201610181674 A CN201610181674 A CN 201610181674A CN 105696805 A CN105696805 A CN 105696805A
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- CN
- China
- Prior art keywords
- steel
- brick
- presstressed reinforcing
- brick column
- post
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- 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.)
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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
Abstract
The invention discloses a brick column reinforcement method. The method is characterized in that two prestress ribs are hung after the surface of a brick column is cleaned and coated with mortar, the middle sections of the stress ribs are vertically distributed, the length of the middle sections of the prestress ribs is 0.45-0.55 time of the height of the brick column, steering steel blocks are arranged on the turning portions where the vertical sections of the prestress ribs are changed into inclined sections, steel inserted plates are inserted into vertical mortar joints of the brick column, angle steel is arranged on the portion 250-300 mm away from the end of the brick column, the angle steel is inserted into transverse mortar joints of the brick column, and the prestress ribs are fixed to the angle steel through anchors after being tensioned. Shotcrete is arranged on the outer sides of the prestress ribs. Expansive concrete is adopted as the shotccrete, steel batten plates are arranged on the outer sides of the expansive concrete and are welded to U-shaped embedded parts buried in the brick column, and the width of the steel batten plates is 150-200 mm.
Description
Technical field
The present invention relates to a kind of reinforcement means, particularly to brick column reinforcing method。
Background technology
To reinforce when brick columns bearing capacity is inadequate, traditional reinforcement means is section-increased method, owing to original structure is in stress, produce ess-strain, the structure then added does not have ess-strain, cause original structure and after the structure ess-strain that adds inharmonious, the structure and the original structure that add after causing are difficult to form entirety。Be necessary this is improved, to after the structure that adds apply certain prestressing force so that it is produce ess-strain, be conducive to original structure and after the structure that adds coordinate stress。
Summary of the invention
The present invention is to provide a kind of brick column reinforcing method, solves to carry out, when brick columns bearing capacity is inadequate, the problem that consolidation effect is bad。
Brick post removing surface hangs two presstressed reinforcing steels after whitewashing mortar, presstressed reinforcing steel diameter is 18～25mm, presstressed reinforcing steel interlude is for being arranged vertically, presstressed reinforcing steel interlude length is 0.45～0.55 times of brick post height, two presstressed reinforcing steel spacing are determined according to brick post section, when brick column section length is 250mm, two presstressed reinforcing steel spacing are 60mm；When brick column section length is 300mm, two presstressed reinforcing steel spacing are 75mm；When brick column section length is 350mm, two presstressed reinforcing steel spacing are 90mm；When brick column section length is 400mm, two presstressed reinforcing steel spacing are 100mm；When brick column section length is 450mm, two presstressed reinforcing steel spacing are 110mm；When brick column section length be 500mm and above time, two presstressed reinforcing steel spacing are 120mm。Presstressed reinforcing steel vertical section becomes the turnover position setting of oblique section and turns to bloom, bloom is turned to be made up of billet and pad reinforcing bar, billet thickness is 10mm, pad reinforcing bar is the round steel of diameter 12～14mm, polishing according to presstressed reinforcing steel turnover radian in pad steel-bar and stress technique muscle contact site, contacts with pad reinforcing bar and contact into face after making presstressed reinforcing steel turnover。Billet inserts the vertical mortar joint of brick post, arranges angle steel from brick styletable head 250～300mm place, and angle steel inserts brick post transverse direction mortar joint, is fixed on angle steel by ground tackle after tension of prestressed tendon。Gunite concrete is set outside presstressed reinforcing steel, gunite concrete adopts expansive concrete, expansive concrete intensity be C30 or more than, thickness is 25～35mm, steel batten plate is set outside expansive concrete, steel batten plate be embedded in brick post U-shaped built-in fitting and weld, steel batten plate width is 150～200mm, wrapping up gunite concrete by steel batten plate makes reinforced concrete be in three-dimensional stress state, ruggedized construction is played ahead of time mechanical function and has very big effect, the stress of steel batten plate setting space and reinforced concrete plays very big relation, lot of experiments is carried out for this, steel batten plate setting space is determined according to result of the test。The stress mobilization factor situation of table 1 is brick column section length when being 400mm steel batten plate setting space and reinforced concrete, in table, brick column section is square, and the stress mobilization factor of reinforced concrete refers to the ratio of reinforced concrete bearing stress and limit stress under upper load。According to table 1 result, increase along with bearing capacity, the stress mobilization factor of reinforced concrete can promote to some extent, and when steel batten plate setting space is more than 550mm, stress mobilization factor reduces relatively big, and the change of stress mobilization factor is little when steel batten plate setting space is less than 500mm。Therefore brick column section length is when being 400mm, steel batten plate setting space is more than 500mm and less than or equal to 550mm。The stress mobilization factor situation of table 2 is brick column section length when being 450mm steel batten plate setting space and reinforced concrete, according to table 2 situation, when brick column section length is 450mm, steel batten plate setting space is more than 550mm and less than or equal to 600mm。Test is determined successively: when brick column section length is 500mm, steel batten plate setting space is more than 600mm and less than or equal to 650mm。When brick column section length is 550mm or during more than 550mm, steel batten plate setting space is more than 650mm and less than or equal to 700mm。When brick column section length is 350mm or during less than 350mm, steel batten plate setting space is more than or equal to 450mm and less than or equal to 550mm。
The stress mobilization factor situation of table 1 is brick column section length when being 400mm steel batten plate setting space and reinforced concrete
The stress mobilization factor situation of table 2 is brick column section length when being 450mm steel batten plate setting space and reinforced concrete
Construction procedure includes:
(1) it is arranged around at brick post, makes brick post be in unloaded state。
(2) peel off brick post removing surface and whitewash mortar, the pre-buried U-shaped built-in fitting of brick post transverse direction mortar joint。
(3) billet is inserted the vertical mortar joint of brick post, welded gasket reinforcing bar outside billet, formed and turn to bloom。
(4) arranging angle steel from brick styletable head 250～300mm place, angle steel inserts brick post transverse direction mortar joint。
(5) hanging presstressed reinforcing steel, coupled with three-phase low-voltage transformator deformed bar end, transformator, equipped with variable resistance, with cooling device, should be received the electric wire deformed bar from electric heating transformator and adopt insulation soft copper skein silk line simultaneously。
(6) with ground tackle, presstressed reinforcing steel is tentatively fixed on angle steel, carries out first time electrified regulation, electrified regulation 5min, set up primary stress, then pass through ground tackle and deformed bar is fixed on angle steel。
(7) jet expansion concrete。
(8) after gunite concrete 45min, first time electrified regulation, electrified regulation 5min are carried out。
(9) carry out second time electrified regulation, electrified regulation 10min after 12 hours at gunite concrete, by ground tackle, deformed bar is fixed on angle steel。
(10) being welded with U-shaped built-in fitting by steel batten plate, fusion length is greater than 80mm。
Mechanical property of the present invention is good, and quality is easily obtained guarantee。
Accompanying drawing explanation
Fig. 1 is brick post ruggedized construction elevational schematic view, and Fig. 2 is brick post ruggedized construction schematic cross-section, and Fig. 3 is for turning to bloom structural representation。
In each accompanying drawing: 1, brick post, 2, turn to bloom, 3, presstressed reinforcing steel, 4, angle steel, 5, steel batten plate, 6, ground tackle, 7, expansive concrete, 8, U-shaped built-in fitting, 9, billet, 10, pad reinforcing bar。
Detailed description of the invention
Fig. 1 is brick post ruggedized construction elevational schematic view, and Fig. 2 is brick post ruggedized construction schematic cross-section, and Fig. 3 is for turning to bloom structural representation。In embodiment, brick post 1 removing surface hangs two presstressed reinforcing steels 3 after whitewashing mortar, presstressed reinforcing steel 3 diameter is 22mm, and presstressed reinforcing steel 3 interlude is for being arranged vertically, and presstressed reinforcing steel 3 interlude length is 0.5 times of brick post 1 height, brick post 1 cross-sectional length is 400mm, and two presstressed reinforcing steel 3 spacing are 100mm。Presstressed reinforcing steel 3 vertical section becomes the turnover position setting of oblique section and turns to bloom 2, bloom 2 is turned to be made up of billet 9 and pad reinforcing bar 10, billet 9 thickness is 10mm, pad reinforcing bar 10 is the round steel of diameter 12mm, polishing according to presstressed reinforcing steel 3 radian of transferring in pad reinforcing bar 10 and presstressed reinforcing steel 3 contact site, contact as face contact with pad reinforcing bar 10 after making presstressed reinforcing steel 3 turnover。Billet 9 inserts the vertical mortar joint of brick post 1, arranges angle steel 4 from 300mm place, brick post 1 termination, and angle steel 4 inserts the horizontal mortar joint of brick post 1, is fixed on angle steel 4 by ground tackle 6 after presstressed reinforcing steel 3 stretch-draw。Arranging gunite concrete outside presstressed reinforcing steel 3, gunite concrete adopts expansive concrete 7, and expansive concrete 7 intensity is C30, thickness is 30mm, steel batten plate 5 is set outside expansive concrete 7, steel batten plate 5 be embedded in brick post 1 U-shaped built-in fitting 8 and weld, steel batten plate 5 width is 180mm。Steel batten plate 5 setting space is more than 520mm。
Construction procedure includes:
(1) it is arranged around at brick post 1, makes brick post 1 be in unloaded state。
(2) peel off brick post 1 removing surface and whitewash mortar, the horizontal pre-buried U-shaped built-in fitting 8 of mortar joint of brick post 1。
(3) billet 9 is inserted the vertical mortar joint of brick post 1, welded gasket reinforcing bar 10 outside billet 9, is formed and turn to bloom 2。
(4) arranging angle steel 4 from 300mm place, brick post 1 termination, angle steel 4 inserts the horizontal mortar joint of brick post 1。
(5) hanging presstressed reinforcing steel 3, coupled with three-phase low-voltage transformator deformed bar end, transformator, equipped with variable resistance, with cooling device, should be received the electric wire deformed bar from electric heating transformator and adopt insulation soft copper skein silk line simultaneously。
(6) with ground tackle 6, presstressed reinforcing steel 3 is tentatively fixed on angle steel 4, carries out first time electrified regulation, electrified regulation 5min, set up primary stress, then pass through ground tackle 6 and deformed bar is fixed on angle steel 4。
(7) jet expansion concrete seven。
(8) after gunite concrete 45min, first time electrified regulation, electrified regulation 5min are carried out。
(9) second time electrified regulation is carried out after 12 hours at gunite concrete, electrified regulation 10min, by ground tackle 6, deformed bar is fixed on angle steel 4。
(10) being welded with U-shaped built-in fitting by steel batten plate 5, fusion length is greater than 80mm。
Claims (7)
1. a brick column reinforcing method, it is characterized in that brick post removing surface hangs two presstressed reinforcing steels after whitewashing mortar, presstressed reinforcing steel interlude is for being arranged vertically, presstressed reinforcing steel interlude length is 0.45～0.55 times of brick post height, presstressed reinforcing steel vertical section becomes the turnover position setting of oblique section and turns to bloom, and billet inserts the vertical mortar joint of brick post, arranges angle steel from brick styletable head 250～300mm place, angle steel inserts brick post transverse direction mortar joint, is fixed on angle steel by ground tackle after tension of prestressed tendon；Arranging gunite concrete outside presstressed reinforcing steel, gunite concrete adopts expansive concrete, arranges steel batten plate outside expansive concrete, steel batten plate be embedded in brick post U-shaped built-in fitting and weld, steel batten plate width is 150～200mm。
2. brick column reinforcing method according to claim 1, is characterized in that construction procedure includes:
(1) it is arranged around at brick post, makes brick post be in unloaded state。
(2) peel off brick post removing surface and whitewash mortar, the pre-buried U-shaped built-in fitting of brick post transverse direction mortar joint。
(3) billet is inserted the vertical mortar joint of brick post, welded gasket reinforcing bar outside billet, formed and turn to bloom。
(4) arranging angle steel from brick styletable head 250～300mm place, angle steel inserts brick post transverse direction mortar joint。
(5) hanging presstressed reinforcing steel, coupled with three-phase low-voltage transformator deformed bar end, transformator, equipped with variable resistance, with cooling device, should be received the electric wire deformed bar from electric heating transformator and adopt insulation soft copper skein silk line simultaneously。
(6) with ground tackle, presstressed reinforcing steel is tentatively fixed on angle steel, carries out first time electrified regulation, electrified regulation 5min, set up primary stress, then pass through ground tackle and deformed bar is fixed on angle steel。
(7) jet expansion concrete。
(8) after gunite concrete 45min, first time electrified regulation, electrified regulation 5min are carried out。
(9) carry out second time electrified regulation, electrified regulation 10min after 12 hours at gunite concrete, by ground tackle, deformed bar is fixed on angle steel。
(10) being welded with U-shaped built-in fitting by steel batten plate, fusion length is greater than 80mm。
3. brick column reinforcing method according to claim 1, is characterized in that presstressed reinforcing steel diameter is 18～25mm。
4. brick column reinforcing method according to claim 1, is characterized in that two presstressed reinforcing steel spacing are determined according to brick post section, and when brick column section length is 250mm, two presstressed reinforcing steel spacing are 60mm；When brick column section length is 300mm, two presstressed reinforcing steel spacing are 75mm；When brick column section length is 350mm, two presstressed reinforcing steel spacing are 90mm；When brick column section length is 400mm, two presstressed reinforcing steel spacing are 100mm；When brick column section length is 450mm, two presstressed reinforcing steel spacing are 110mm；When brick column section length be 500mm and above time, two presstressed reinforcing steel spacing are 120mm。
5. brick column reinforcing method according to claim 1, it is characterized in that turning to bloom to be made up of billet and pad reinforcing bar, billet thickness is 10mm, pad reinforcing bar is the round steel of diameter 12～14mm, polishing according to presstressed reinforcing steel turnover radian in pad steel-bar and stress technique muscle contact site, contacts with pad reinforcing bar and contact into face after making presstressed reinforcing steel turnover。
6. brick column reinforcing method according to claim 1, it is characterized in that expansive concrete intensity be C30 or more than, thickness is 25～35mm。
7. brick column reinforcing method according to claim 1, is characterized in that, when brick column section length is 400mm, steel batten plate setting space is more than 500mm and less than or equal to 550mm；When brick column section length is 450mm, steel batten plate setting space is more than 550mm and less than or equal to 600mm；When brick column section length is 500mm, steel batten plate setting space is more than 600mm and less than or equal to 650mm；When brick column section length is 550mm or during more than 550mm, steel batten plate setting space is more than 650mm and less than or equal to 700mm。When brick column section length is 350mm or during less than 350mm, steel batten plate setting space is more than or equal to 450mm and less than or equal to 550mm。
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710537097.3A CN107191004B (en) | 2016-03-10 | 2016-03-10 | Brick column reinforced construction method |
| CN201610181674.5A CN105696805B (en) | 2016-03-10 | 2016-03-10 | Brick column reinforcing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610181674.5A CN105696805B (en) | 2016-03-10 | 2016-03-10 | Brick column reinforcing method |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710537097.3A Division CN107191004B (en) | 2016-03-10 | 2016-03-10 | Brick column reinforced construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105696805A true CN105696805A (en) | 2016-06-22 |
| CN105696805B CN105696805B (en) | 2017-11-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710537097.3A Active CN107191004B (en) | 2016-03-10 | 2016-03-10 | Brick column reinforced construction method |
| CN201610181674.5A Active CN105696805B (en) | 2016-03-10 | 2016-03-10 | Brick column reinforcing method |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710537097.3A Active CN107191004B (en) | 2016-03-10 | 2016-03-10 | Brick column reinforced construction method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106836604A (en) * | 2017-02-07 | 2017-06-13 | 叶长青 | The preparation method of large span Sloping roof |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09151610A (en) * | 1995-12-01 | 1997-06-10 | Kajima Corp | Reinforcing method for reinforced concrete column |
| CN1401873A (en) * | 2002-09-05 | 2003-03-12 | 杜旌 | Method for pre-stressed reinforcing concrete compression member |
| CN201531124U (en) * | 2009-09-24 | 2010-07-21 | 马人乐 | Graded external pre-stress strengthening masonry structure |
| CN102080454A (en) * | 2010-12-02 | 2011-06-01 | 西安建筑科技大学 | Method for reinforcing pillars in buildings |
| CN202925926U (en) * | 2012-11-04 | 2013-05-08 | 西安建筑科技大学 | Reinforcing device for brick pillar |
| CN202925924U (en) * | 2012-11-04 | 2013-05-08 | 西安建筑科技大学 | Combination reinforcing device for brick pillar |
| CN103306492A (en) * | 2013-05-29 | 2013-09-18 | 朱奎 | Method for reinforcing concrete weak beam |
| CN103388408A (en) * | 2013-07-28 | 2013-11-13 | 桂林理工大学 | External pre-stressed tendon reinforcing steering block for building structure |
| JP2014136923A (en) * | 2013-01-17 | 2014-07-28 | Sanyo-Home Co Ltd | Reinforcement structure of concrete column |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101832035B (en) * | 2010-05-15 | 2011-05-11 | 朱虹 | Structure and construction method for reinforced concrete column |
| RU2442867C1 (en) * | 2010-08-16 | 2012-02-20 | Федеральное Государственное Автономное Образовательное Учреждение Высшего Профессионального Образования "Сибирский Федеральный Университет" | Device for reinforcing bearing frame |
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2016
- 2016-03-10 CN CN201710537097.3A patent/CN107191004B/en active Active
- 2016-03-10 CN CN201610181674.5A patent/CN105696805B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09151610A (en) * | 1995-12-01 | 1997-06-10 | Kajima Corp | Reinforcing method for reinforced concrete column |
| CN1401873A (en) * | 2002-09-05 | 2003-03-12 | 杜旌 | Method for pre-stressed reinforcing concrete compression member |
| CN201531124U (en) * | 2009-09-24 | 2010-07-21 | 马人乐 | Graded external pre-stress strengthening masonry structure |
| CN102080454A (en) * | 2010-12-02 | 2011-06-01 | 西安建筑科技大学 | Method for reinforcing pillars in buildings |
| CN202925926U (en) * | 2012-11-04 | 2013-05-08 | 西安建筑科技大学 | Reinforcing device for brick pillar |
| CN202925924U (en) * | 2012-11-04 | 2013-05-08 | 西安建筑科技大学 | Combination reinforcing device for brick pillar |
| JP2014136923A (en) * | 2013-01-17 | 2014-07-28 | Sanyo-Home Co Ltd | Reinforcement structure of concrete column |
| CN103306492A (en) * | 2013-05-29 | 2013-09-18 | 朱奎 | Method for reinforcing concrete weak beam |
| CN103388408A (en) * | 2013-07-28 | 2013-11-13 | 桂林理工大学 | External pre-stressed tendon reinforcing steering block for building structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106836604A (en) * | 2017-02-07 | 2017-06-13 | 叶长青 | The preparation method of large span Sloping roof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107191004B (en) | 2019-06-04 |
| CN107191004A (en) | 2017-09-22 |
| CN105696805B (en) | 2017-11-28 |
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Effective date of registration: 20201204 Address after: 410000, 1st floor, Putai village committee office building, Puji Town, Liuyang City, Changsha City, Hunan Province Patentee after: Hunan Fengshou Project Management Co., Ltd Address before: 325000 No. 4, Jinchuan Road, Tianhe street, Wenzhou economic and Technological Development Zone, Zhejiang, China Patentee before: Ye Changqing |