CN203347257U - Anti-seismic reinforcement device for steel reinforced concrete column after fire - Google Patents
Anti-seismic reinforcement device for steel reinforced concrete column after fire Download PDFInfo
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- CN203347257U CN203347257U CN 201320260011 CN201320260011U CN203347257U CN 203347257 U CN203347257 U CN 203347257U CN 201320260011 CN201320260011 CN 201320260011 CN 201320260011 U CN201320260011 U CN 201320260011U CN 203347257 U CN203347257 U CN 203347257U
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Abstract
The utility model discloses an anti-seismic reinforcement device for a steel reinforced concrete column after fire. The anti-seismic reinforcement device comprises a rectangular column body and is characterized in that carbon fiber sheets are fixed on the outer walls around the column body. Angle steel bars are longitudinally arranged on the carbon fiber sheets located at four corners of the column body respectively. A plurality of transversely arranged flat steel bars are fixed between the two angle steel bars on the same side face of the column body. The flat steel bars on the same side face of the column body are arranged longitudinally and uniformly. The flat steel bars on different side faces of the column body are arranged longitudinally in a staggered mode. The distance between the flat steel bars on the same side face of the column body is 1/12-1/20 of the length of the column body. Gaps between the carbon fiber sheets and the angle steel bars are filled with cement gum, and all the angle steel bars are also filled with the cement gum. The four corners of the column body are circular beads. The anti-seismic reinforcement device for the steel reinforced concrete column after fire has the advantages that the advantages of a steel-encased reinforcement method and a carbon fiber reinforcement method are fully utilized, the rigidity and ductility of components are effectively improved at the same time, the ultimate bearing capacity is better enhanced, and the anti-seismic performance of the steel reinforced concrete column after fire is further improved.
Description
Technical field
The utility model relates to the Structural Engineering field in civil engineering, especially relates to the anti-seismic strengthening device of profile steel concrete column after a kind of fire.
Background technology
In recent years, the application of profile steel concrete column in high-rise, super highrise building is more and more, and continues to bring out fire incident building with built high level, super highrise building.After fire, the mechanical property of profile steel concrete column obvious decline all occurs as important performances such as rigidity, ductility, ultimate bearing capacities.This phenomenon makes building in normal use procedure backward, and in the face of natural calamity, particularly during seismic damage, all has no small potential safety hazard, and therefore the expert carries out research and probe to this phenomenon both at home and abroad, and has proposed a plurality of restored projects.At present, the reinforcing restorative procedure of profile steel concrete column, mainly contain increasing section reinforcing method, reinforced with external steel encased, CFRP Sheet Strengthening Method, prestressing etc.Result of the test shows, these restored projects have all improved the mechanical properties such as the bearing capacity, ductility of member to some extent, is the effective way of further improving profile steel concrete column anti-seismic performance after fire.
The increasing section reinforcing method is by increasing the steel bar stress of former member, simultaneously at outside young concrete to increase member section, improve intensity, rigidity stability and the crack resistance of member, applied widely, reasonable stress, but because young concrete needs maintenance, cause the duration longer, the method has also increased dead load, has reduced the usage space of building when increasing cross section.Reinforced with external steel encased passes through former member outsourcing shaped steel, improve the Rigidity and strength of member, can be in the situation that the former scantling of less increase increase substantially the member ultimate bearing capacity, easy construction, but the method effect aspect the raising component ductility is limited.CFRP Sheet Strengthening Method is by member wrap carbon fiber material, except effective ductility that improves member, also have corrosion-resistant, humidity, increase advantages such as building deadweight, easy construction hardly, but the method effect aspect the raising element bearing capacity is limited.Prestressing is by member being applied to vertical and horizontal prestressing force, improves the member ultimate bearing capacity, and reduces structure member crevices, improves behavior of members under loading, but the method is to the having relatively high expectations of material property and ground tackle, complicated construction technique.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of rigidity, ductility that can simultaneously effectively improve member, and ultimate bearing capacity, further improves the anti-seismic strengthening device of profile steel concrete column after the fire of anti-seismic performance after fire.
The utility model solves the problems of the technologies described above adopted technical scheme: the anti-seismic strengthening device of profile steel concrete column after a kind of fire, comprise the rectangle cylinder, the surrounding outer wall of described cylinder is fixed with carbon cloth, four edges and corners that are positioned at described cylinder on described carbon cloth are vertically arranged with respectively angle steel, are fixed with the band steel of several horizontally sets between two angle steel of the same side of described cylinder.
The band steel of described cylinder same side is vertically evenly distributed, and the described cylinder not band steel of ipsilateral vertically is staggered.
The band steel spacing each other of described cylinder same side is 1/12～1/20 of cylinder length.
Gap between described carbon cloth and described angle steel, and each described angle steel in all be filled with clay.
Four corner angle of described cylinder are fillet.
Compared with prior art, the utility model has the advantage of: the anti-seismic strengthening device of profile steel concrete column after a kind of fire of the utility model, its seismic hardening reparation has adopted Covered with Angles and carbon fiber composite consolidation, main material is steel and carbon fiber, steel have adopted angle steel and band steel, carbon fibre material adopts carbon cloth, and advantage is as follows:
(1) improve the rigidity of member.The anti-seismic strengthening device of profile steel concrete column after fire described in the utility model, take full advantage of the material property of outsourcing angle steel and band steel, can be to the outside enough formula steel bushings of lattice that increase of profile steel concrete column, compare CFRP Sheet Strengthening Method, increase bending rigidity and the shear stiffness of member, effectively improved the component load-bearing ability.
(2) improve the ductility of member.The anti-seismic strengthening device of profile steel concrete column after fire described in the utility model, take full advantage of the material property of carbon cloth, to profile steel concrete column, provides effective horizontal restrain, compares reinforced with external steel encased, effectively improved the ductility of member.
(3) not affecting member normally uses.The anti-seismic strengthening device of profile steel concrete column after fire described in the utility model, increase hardly the cross section of member, compare the profile steel concrete column that increasing section is reinforced, by the mode that enlarges original member section, carry out the stiffener mechanical property, greatly reduced the normal impact of using of member.
(4) easy construction, duration are short.The anti-seismic strengthening device of profile steel concrete column after fire described in the utility model, main material is common angle steel and band steel and carbon cloth, by welding and barbola work, buying is convenient, implementation process does not have technological difficulties, compare the high and complicated construction technique of the material requirements of prestressing, the construction convenience degree is self-evident.With the increasing section reinforcing method, need late maintaining to compare, the utility model has been constructed and can have been produced the anticipation consolidation effect, and the duration is shorter simultaneously.
(5) improve component durability.The anti-seismic strengthening device of profile steel concrete column after fire described in the utility model, take full advantage of that carbon fibre material is corrosion-resistant, the advantage of humidity, reduces the erosion of hazardous substances to pillar, improved the durability of member.
In sum, the anti-seismic strengthening device of profile steel concrete column after a kind of fire of the utility model, adopt Covered with Angles and carbon fiber composite consolidation, fully drawn the advantage of reinforced with external steel encased and CFRP Sheet Strengthening Method, effectively improve rigidity and the ductility of member simultaneously, improve better ultimate bearing capacity, further improved the anti-seismic performance of profile steel concrete column after the fire.
The accompanying drawing explanation
The elevational schematic view that Fig. 1 is the utility model profile steel concrete column;
The cross sectional representation that Fig. 2 is the utility model profile steel concrete column.
The specific embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the utility model.
Specific embodiment
The anti-seismic strengthening device of profile steel concrete column after a kind of fire of the utility model, as depicted in figs. 1 and 2, comprise rectangle cylinder 1, the surrounding outer wall of cylinder 1 is fixed with carbon cloth 2, four edges and corners that are positioned at cylinder 1 on carbon cloth 2 are vertically arranged with respectively angle steel 3, are fixed with the band steel 4 of several horizontally sets between two angle steel 3 of the same side of cylinder 1.
In this specific embodiment, the band steel 4 of cylinder 1 same side is vertically evenly distributed, and the cylinder 1 not band steel 4 of ipsilateral vertically is staggered; Band steel 4 spacing each other of cylinder 1 same side is 1/12～1/20 of cylinder 1 length.Gap between carbon cloth 2 and angle steel 3, and the interior clay 5 that all is filled with of each angle steel 3; Four corner angle of cylinder 1 are fillet.
Its job practices is as follows:
(1) destroy the cylinder 1 loose concrete in surface of profile steel concrete column, by four corner angle roundings of profile steel concrete column cylinder 1, concrete surface is processed, keep surfacing clean;
(2) at cylinder 1 external coating primer, after primer is preliminary fixed, the brushing adhesive stick, and carbon cloth 2 is entirely sticked on to cylinder 1 surface, and guarantee that carbon cloth 2 is closely knit with the stickup of profile steel concrete column test specimen surface, there is no bubble;
(3) at four corner angle of profile steel concrete column cylinder 1 fixing angle steel 3 respectively;
(4) will between two angle steel 3 of profile steel concrete column same side, by several band steel 4 transverse welds, connect; Band steel 4 is vertically evenly distributed; For preventing that welding stress from having side effects, profile steel concrete column is the band steel 4 subsection interleaving welding of ipsilateral not;
(5) block the gap between angle steel 3 and carbon cloth 2 with clay 5, then with air pump, clay 5 is poured into to angle steel 3 inside, and guarantee that the colloid perfusion is substantial.
According to different force requests, the specification of angle steel 3, band steel 4 and carbon cloth 2 and the spacing of band steel 4 can be regulated.
Above-described embodiment is to further illustrate of the present utility model, but protection domain of the present utility model is as the criterion with claims.
Claims (5)
1. the anti-seismic strengthening device of profile steel concrete column after a fire, comprise the rectangle cylinder, it is characterized in that: the surrounding outer wall of described cylinder is fixed with carbon cloth, four edges and corners that are positioned at described cylinder on described carbon cloth are vertically arranged with respectively angle steel, are fixed with the band steel of several horizontally sets between two angle steel of the same side of described cylinder.
2. the anti-seismic strengthening device of profile steel concrete column after a kind of fire according to claim 1, it is characterized in that: the band steel of described cylinder same side is vertically evenly distributed, and the described cylinder not band steel of ipsilateral vertically is staggered.
3. the anti-seismic strengthening device of profile steel concrete column after a kind of fire according to claim 2, it is characterized in that: the band steel spacing each other of described cylinder same side is 1/12～1/20 of cylinder length.
4. according to the anti-seismic strengthening device of profile steel concrete column after the described a kind of fire of any one in claim 1-3, it is characterized in that: the gap between described carbon cloth and described angle steel, and each described angle steel in all be filled with clay.
5. according to the anti-seismic strengthening device of profile steel concrete column after the described a kind of fire of any one in claim 1-3, it is characterized in that: four corner angle of described cylinder are fillet.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201320260011 CN203347257U (en) | 2013-05-13 | 2013-05-13 | Anti-seismic reinforcement device for steel reinforced concrete column after fire |
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| CN 201320260011 CN203347257U (en) | 2013-05-13 | 2013-05-13 | Anti-seismic reinforcement device for steel reinforced concrete column after fire |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104141393A (en) * | 2014-08-06 | 2014-11-12 | 上海市建筑科学研究院(集团)有限公司 | Method for reinforcing rectangular wood column by pasting angle steel |
| CN104389438A (en) * | 2014-12-10 | 2015-03-04 | 华北水利水电大学 | Aseismic strengthening structure and method for concrete column |
| CN104690467A (en) * | 2014-12-05 | 2015-06-10 | 杭州固力建筑工程有限公司 | Application method of positioning fixture in steel-clad column construction process |
| CN104775539A (en) * | 2015-04-20 | 2015-07-15 | 中南林业科技大学 | Carbon fiber reinforced stirrup and steel plate hoop buckling-restrained energy-dissipation brace |
| CN104912220A (en) * | 2015-04-20 | 2015-09-16 | 中南林业科技大学 | Buckling-restrained energy-dissipated brace of carbon fiber reinforced cold-formed thin-wall square steel pipe |
| CN105756366A (en) * | 2016-03-22 | 2016-07-13 | 武汉大学 | Method for accelerating reinforcement of reinforced corner column |
| CN106401205A (en) * | 2016-09-06 | 2017-02-15 | 中交第航务工程局有限公司 | Construction method for reinforcement of externally bonded profile steel of reinforced concrete structure |
| CN106567555A (en) * | 2016-10-31 | 2017-04-19 | 同济大学 | Method for improving direct shear bearing capacity of reinforced concrete component by obliquely attaching fiber composite material to surface of reinforced concrete component |
| CN106907015A (en) * | 2017-01-23 | 2017-06-30 | 北京建筑大学 | A kind of reinforcement means of new heavy in section rectangle reinforced column |
| CN112012515A (en) * | 2020-09-08 | 2020-12-01 | 温州华志宇强科技有限公司 | Concrete column outer-wrapping reinforcing structure and construction process thereof |
-
2013
- 2013-05-13 CN CN 201320260011 patent/CN203347257U/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104141393A (en) * | 2014-08-06 | 2014-11-12 | 上海市建筑科学研究院(集团)有限公司 | Method for reinforcing rectangular wood column by pasting angle steel |
| CN104690467A (en) * | 2014-12-05 | 2015-06-10 | 杭州固力建筑工程有限公司 | Application method of positioning fixture in steel-clad column construction process |
| CN104389438A (en) * | 2014-12-10 | 2015-03-04 | 华北水利水电大学 | Aseismic strengthening structure and method for concrete column |
| CN104389438B (en) * | 2014-12-10 | 2017-03-01 | 华北水利水电大学 | A kind of seismic hardening mechanism of concrete column and method |
| CN104775539B (en) * | 2015-04-20 | 2018-07-06 | 中南林业科技大学 | Fibre reinforced stirrup steel plate hoop buckling-restrained energy-dissipation |
| CN104775539A (en) * | 2015-04-20 | 2015-07-15 | 中南林业科技大学 | Carbon fiber reinforced stirrup and steel plate hoop buckling-restrained energy-dissipation brace |
| CN104912220A (en) * | 2015-04-20 | 2015-09-16 | 中南林业科技大学 | Buckling-restrained energy-dissipated brace of carbon fiber reinforced cold-formed thin-wall square steel pipe |
| CN105756366A (en) * | 2016-03-22 | 2016-07-13 | 武汉大学 | Method for accelerating reinforcement of reinforced corner column |
| CN106401205A (en) * | 2016-09-06 | 2017-02-15 | 中交第航务工程局有限公司 | Construction method for reinforcement of externally bonded profile steel of reinforced concrete structure |
| CN106567555A (en) * | 2016-10-31 | 2017-04-19 | 同济大学 | Method for improving direct shear bearing capacity of reinforced concrete component by obliquely attaching fiber composite material to surface of reinforced concrete component |
| CN106567555B (en) * | 2016-10-31 | 2019-02-01 | 同济大学 | A kind of method that bias laid fiber composite material in surface improves reinforced concrete member staight scissors bearing capacity |
| CN106907015A (en) * | 2017-01-23 | 2017-06-30 | 北京建筑大学 | A kind of reinforcement means of new heavy in section rectangle reinforced column |
| CN106907015B (en) * | 2017-01-23 | 2019-03-01 | 北京建筑大学 | A kind of reinforcement means of novel big section rectangle reinforced column |
| CN112012515A (en) * | 2020-09-08 | 2020-12-01 | 温州华志宇强科技有限公司 | Concrete column outer-wrapping reinforcing structure and construction process thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131218 Termination date: 20160513 |
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| CF01 | Termination of patent right due to non-payment of annual fee |