CN101649678A - Structure for strengthening node of beam column by section increase method and construction method thereof - Google Patents
Structure for strengthening node of beam column by section increase method and construction method thereof Download PDFInfo
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- CN101649678A CN101649678A CN200910104433A CN200910104433A CN101649678A CN 101649678 A CN101649678 A CN 101649678A CN 200910104433 A CN200910104433 A CN 200910104433A CN 200910104433 A CN200910104433 A CN 200910104433A CN 101649678 A CN101649678 A CN 101649678A
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Abstract
The invention discloses a structure for strengthening a node of a beam column by a section increase method, comprising an original column body and an original beam, wherein a section increase beam isarranged below the original beam, a node part of the original column body connected with the section increase beam is fixedly connected with a steel sleeve hoop by a chemical anchor bolt, and the steel sleeve hoop is sleeved on the original column body; a novel matching longitudinal rib parallel to the original beam is cast in the section increase beam, the end part of the novel matching longitudinal rib is provided with a bent hook parallel to the outer surface of the steel sleeve hoop, and the bent hook is fixedly connected on the outer surface of the steel sleeve hoop. The construction method comprises the following steps: (a) designing, manufacturing and installing the steel sleeve hoop; (b) anchoring; (c) welding the novel matching longitudinal rib; (d) sticking; and (e) casting the section increase beam. By the invention, under a condition that a plurality of beams and one column are intersectant, holes do not need to be drilled on the beams, ribs do not need to be arranged on the beams, steel bars do not need to be truncated and then connected, the construction is simple and convenient and labour and materials are saved; a plurality of deeper holes do not need to be drilledon the original column, the newly matched longitudinal rib does not need to be truncated and then connected, and the invention is very beneficial to the effect of strengthening the structure.
Description
Technical field
The present invention relates to a kind of construction reinforced structure, particularly a kind of structure for strengthening node of beam column by section increase and job practices thereof.
Background technology
Often adopt the enlarging section method that the original structure beam is reinforced in the concrete structure reinforcement construction, increase depth of beam and width, newly join at the bottom of the beam, back and beam side longitudinal reinforcement, the longitudinal reinforcement of newly joining need carry out anchor connection with the former frame column at beam two ends, conventional way is to cut in two newly joining reinforcing bar, adopt electric hammer on post, to punch, the method of two sections reinforcing bars by bar planting is anchored at respectively in two newel posts, the reinforcing bar middle part connects again, or on post, get through hole, whole reinforcing bar passed this through hole, and reperfusion structure glue or pea gravel concreten carry out anchoring in the hole.
There are some problems in above construction, connect at the middle part again after the bar planting anchoring separately if reinforcing bar cut in two, will satisfy " Code for design of concrete structures " (GB50010-2002) some regulations of 9.4.2 bar, must not adopt the colligation lap joint under the part situation, must adopt the method for welding or mechanical connection, the construction trouble, the expense of taking a lot of work material, also to satisfy " concrete structure engineering construction quality standards of acceptance " (GB50204-2002) joint area percentage of the longitudinal stress reinforcing bar of middle regulation simultaneously, then must calculate blank size, cause the construction trouble equally, the expense of taking a lot of work material, therefore, in case there is jointing to occur, the problem that cost and duration increase must appear, also every vertical muscle all exist joint very unfavorable to the integrated member consolidation effect, quality is difficult to obtain control.
In addition, usually run into three, four beams of ining succession around the pillar in the construction and all want enlarging section, the vertical muscle that these several beam enlarging sections are newly joined generally all is positioned at same horizontal plane, if get through that reinforcing bar is worn in the hole then conflict mutually in several directions hole, reinforcing bar can't pass, and especially double muscle is difficult to when arranging realize especially.Bar planting also is difficult to realize if several directions are holed simultaneously, because it is generally darker according to the bar planting degree of depth that " concrete structure reinforcement design specifications " (GB30367-2006) designs, the pillar sectional dimension often can't satisfy the drilling depth of several directions bar planting simultaneously, conflict each other in the bar planting hole, reinforcing bar also can't be put into the hole, moreover it is, bigger to former post damage if punching also breaks into loose zone with the whole cross section of former post too much easily.
Even consider under more satisfactory situation, run in succession around the pillar three, four beams are all wanted enlarging section, these several beams are because depth of section is inconsistent, the vertical muscle of newly joining is not positioned at same horizontal plane, get through that reinforcing bar is worn in the hole or bar planting can not clash this moment, theoretical feasible, if but former column section is bigger, the hole of getting through hole or bar planting needs is generally darker, and length usually surpasses 500mm, and diameter is generally greater than 25mm, if the main muscle of former post, stirrup is arranged comparatively intensive, be easy to when then punching run into the post reinforcing bar and be difficult to pore-forming, often need repeatedly to attempt, time-consuming and damage former post easily.Can comprehensive above the analysis if want to adopt present conventional method anchor bar, be not only to consider duration cost size issue, under a lot of situations be realize the problem of constructing.
Summary of the invention
Purpose of the present invention is exactly at the deficiencies in the prior art, and a kind of bean column node place's reinforcing bar anchoring when being used for the enlarging section method and reinforcing the building beam is provided
For achieving the above object, the present invention adopts following technical scheme:
A kind of structure for strengthening node of beam column by section increase, comprise former cylinder, Yuan Liang, it below former beam the enlarging section beam, it is characterized in that: be fixedly connected with steel hoop with the position of joints that the enlarging section beam is connected by chemical anchor bolts at former cylinder, steel hoop is enclosed within on the former cylinder, the upper edge of steel hoop be positioned at former beam below; Be cast with in the described enlarging section beam with former Liangping row newly join vertical muscle, the end of newly joining vertical muscle is provided with the crotch parallel with the steel hoop external surface, crotch is fixedly connected by welding on the external surface of steel hoop; Between former cylinder and steel hoop, be provided with the steel bonding glue-line, fixedly connected by the steel glue-line between former cylinder and the steel hoop.
Preferably, described newly join vertical muscle below be provided with angle steel, a face of angle steel is welded on the external surface of steel hoop, another face of angle steel with newly join vertical muscle welding.
Preferably, described steel hoop is provided with hole for injecting glue and steam vent.
Preferably, at the position that described steel hoop and former cylinder, Yuan Liang join, and the plate joint position that forms steel hoop is equipped with the band that is made of rapid hardening pressure-resistant seal glue.
The job practices of above-mentioned structure for strengthening node of beam column by section increase is characterized in that may further comprise the steps:
A), design, making, installation steel hoop
Determine the size of steel hoop cross section inside casing to make steel hoop can be enclosed within the outside of former cylinder according to former pole section housing size; Along the height that former cylinder vertically extends, determine the height of steel hoop according to the enlarging section beam; Steel hoop is resolved at least two, and make its closed back form the obturator that adapts with former cylinder outside; Hole resolving at least two the steel hoop; The steel hoop that will resolve at least two then is enclosed within on the former cylinder, is welded into whole steel hoop;
B), anchoring
Steel hoop is installed to the bean column node place, chemical anchor bolts 5 are implanted on the former cylinder by the hole on the steel hoop, steel hoop tentatively is fixed on the former cylinder;
C), vertical muscle is newly joined in welding
The required crotch of newly joining vertical muscle end that anchors on the former cylinder of enlarging section beam is welded on the steel hoop;
D), bonding
With perfusion type steel bonding glue from bottom to top, to both sides, being pressed between steel hoop and the former cylinder of coagulation slowly forms the steel bonding glue-line after the perfusion type steel bonding adhesive curing, make steel hoop and firm being bonded as one of former cylinder by the centre; By this kind method, the enlarging section beam newly join vertical muscle can not need on former cylinder the boring bar planting and effectively with former cylinder anchoring;
E), casting enlarging section beam
At the position of the enlarging section beam of waiting to cast the casting template is installed, casts, treat stripping after the concrete setting, finish the reinforcing of enlarging section method bean column node with concrete.
Preferably, in the described steps d, use rapid hardening pressure-resistant seal glue with all holes and the gap closing except that hole for injecting glue and steam vent on the steel hoop earlier, the band that formation is made of rapid hardening pressure-resistant seal glue, to be sealed be with stiff after, bonding by the hole for injecting glue perfusion with perfusion type steel bonding glue, the air of steel hoop inside is got rid of by steam vent, forms the steel bonding glue-line.
Preferably, among the described step c, after the crotch that will newly join vertical muscle end is welded on the steel hoop,, will newly joins the position that the crotch of vertical muscle end is connected with steel hoop simultaneously and weld angle steel and weld together again at crotch welding angle steel with steel hoop is connected below of newly joining vertical muscle end.To make and newly join vertical muscle and play with the steel plate hoop joint that reinforcement is connected, fixation.
The beneficial effect of a kind of structure for strengthening node of beam column by section increase of the present invention and job practices thereof is, makes under the situation that many beams and post intersect, and adopts enlarging section method construction reinforcements to become possibility to these beams; Owing to not be used in the bar planting of holing on the beam, need not block connection again, easy construction, labor and material saving to reinforcing bar; Do not need the more darker hole of former cylindrical drill, the vertical muscle that does not need newly to join blocks connection again, and is highly beneficial for the effect of structural strengthening.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the A-A sectional structure schematic diagram among Fig. 1.
The specific embodiment
The present invention is further illustrated below in conjunction with accompanying drawing, but therefore do not limit the present invention among the described scope of embodiments.
Referring to Fig. 1, Fig. 2, a kind of structure for strengthening node of beam column by section increase, comprise former cylinder 1, former beam 2, below former beam 2, be enlarging section beam 3, it is characterized in that: the position of joints that is connected with enlarging section beam 3 at former cylinder 1 is fixedly connected with steel hoop 4 by chemical anchor bolts 5, steel hoop 4 is enclosed within on the former cylinder 1, the upper edge of steel hoop 4 be positioned at 3 former beams 2 below; Be cast with in the described enlarging section beam 3 with former beam 2 parallel newly joining and indulge muscle 7, the end of newly joining vertical muscle 7 is provided with the crotch 8 parallel with steel hoop 4 external surfaces, and crotch 8 is fixedly connected by welding on the external surface of steel hoop 4; Between former cylinder 1 and steel hoop 4, be provided with steel bonding glue-line 9, fixedly connected by steel glue-line 9 between former cylinder 1 and the steel hoop 4.
Described newly join vertical muscle 7 below be provided with angle steel 6, a face of angle steel 6 is welded on the external surface of steel hoop 4, another face of angle steel 6 with newly join vertical muscle 7 welding.
Described steel hoop 4 is provided with hole for injecting glue 10 and steam vent 11.
At the position that described steel hoop 4 and former cylinder 1, former beam 2 join, and the plate joint position of formation steel hoop 4 is equipped with the band 12 that is made of rapid hardening pressure-resistant seal glue.
Referring to Fig. 1, Fig. 2, the job practices of structure for strengthening node of beam column by section increase is characterized in that may further comprise the steps:
A, design, making, installation steel hoop
Determine the size of steel hoop 4 cross section inside casings to make steel hoop 4 can be enclosed within the outside of former cylinder 1 according to former cylinder 1 cross section housing size; Along the height that former cylinder 1 vertically extends, determine the height of steel hoop 4 according to enlarging section beam 3; Steel hoop 4 is resolved at least two, and make its closed back form the obturator that adapts with former cylinder 1 outside; Resolving into boring on the L-shaped steel hoop 4 in two cross sections; To resolve into two L-shaped steel hoops 4 in cross section then and be enclosed within on the former cylinder 1, be welded into whole steel hoop 4;
B, anchoring
Vertical muscle is newly joined in c, welding
The enlarging section beam 3 required crotches 8 of newly joining vertical muscle 7 ends that anchor on the former cylinder 1 are welded on the steel hoop 4; With steel hoop 4 is connected below, weld the angle steel 6 of L45X28X4 model at the crotch 8 of newly joining vertical muscle 7 ends again, will newly join the position that the crotch 8 of vertical muscle 7 ends is connected with steel hoop 4 simultaneously and weld angle steel 6 and weld together;
D, bonding
Use rapid hardening pressure-resistant seal glue with all holes and the gap closing except that hole for injecting glue 10 and steam vent 11 on the steel hoop 4 earlier, the band 12 that formation is made of rapid hardening pressure-resistant seal glue, to be sealed be with 12 stiff after, with perfusion type steel bonding glue from bottom to top by hole for injecting glue 10, by the centre to both sides, being pressed between steel hoop 4 and the former cylinder 1 of coagulation slowly, the air of steel hoop 4 inside is got rid of by steam vent 11, form steel bonding glue-line 9, form steel bonding glue-line 9 after the perfusion type steel bonding adhesive curing, make steel hoop 4 and former cylinder 1 firm being bonded as one.
E, casting enlarging section beam 3
At the position of the enlarging section beam 3 of waiting to cast the casting template is installed, casts, treat stripping after the concrete setting, finish the reinforcing of enlarging section method bean column node with concrete.
Described embodiments of the present invention though combine accompanying drawing, those of ordinary skill in the art can make various distortion or modification within the scope of the appended claims.
Claims (7)
1, a kind of structure for strengthening node of beam column by section increase, comprise former cylinder (1), former beam (2), below Yuan Liang (2) enlarging section beam (3), it is characterized in that: the position of joints that is connected with enlarging section beam (3) at former cylinder (1) is fixedly connected with steel hoop (4) by chemical anchor bolts (5), steel hoop (4) is enclosed within on the former cylinder (1), the upper edge of steel hoop (4) be positioned at (3) former beam (2) below; Be cast with parallel with former beam (2) the vertical muscle (7) of newly joining in the described enlarging section beam (3), the end of newly joining vertical muscle (7) is provided with the crotch (8) parallel with steel hoop (4) external surface, and crotch (8) is fixedly connected by welding on the external surface of steel hoop (4); Between former cylinder (1) and steel hoop (4), be provided with steel bonding glue-line (9), fixedly connected by steel glue-line (9) between former cylinder (1) and the steel hoop (4).
2, structure for strengthening node of beam column by section increase according to claim 1, it is characterized in that: described newly join vertical muscle (7) below be provided with angle steel (6), a face of angle steel (6) is welded on the external surface of steel hoop (4), another face of angle steel (6) with newly join vertical muscle (7) welding.
3, structure for strengthening node of beam column by section increase according to claim 1 is characterized in that: described steel hoop (4) is provided with hole for injecting glue (10) and steam vent (11).
4, structure for strengthening node of beam column by section increase according to claim 3, it is characterized in that: at the position that described steel hoop (4) and former cylinder (1), former beam (2) join, and the plate joint position of formation steel hoop (4) is equipped with the band (12) that is made of rapid hardening pressure-resistant seal glue.
5, the job practices of the described structure for strengthening node of beam column by section increase of the arbitrary claim of claim 1～4 is characterized in that may further comprise the steps:
A), design, making, installation steel hoop
Determine the size of steel hoop (4) cross section inside casing to make steel hoop (4) can be enclosed within the outside of former cylinder (1) according to former cylinder (1) cross section housing size; Along the height that former cylinder (1) vertically extends, determine the height of steel hoop (4) according to enlarging section beam (3); Steel hoop (4) is resolved at least two, and make its closed back form the obturator that adapts with former cylinder (1) outside; Go up boring at the steel hoop (4) that resolves at least two; The steel hoop (4) that will resolve at least two then is enclosed within on the former cylinder (1), is welded into whole steel hoop (4);
B), anchoring
Steel hoop (4) is installed to the bean column node place, chemical anchor bolts 5 are implanted on the former cylinder (1) by the hole on the steel hoop (4), steel hoop (4) tentatively is fixed on the former cylinder (1);
C), vertical muscle is newly joined in welding
The required crotch (8) of newly joining vertical muscle (7) end that anchors on the former cylinder (1) of enlarging section beam (3) is welded on the steel hoop (4);
D), bonding
With perfusion type steel bonding glue from bottom to top, to both sides, being pressed between steel hoop (4) and the former cylinder of coagulation (1) slowly forms steel bonding glue-line (9) after the perfusion type steel bonding adhesive curing, make steel hoop (4) and firm being bonded as one of former cylinder (1) by the centre;
E), casting enlarging section beam (3)
At the position of the enlarging section beam (3) of waiting to cast the casting template is installed, casts, treat stripping after the concrete setting, finish the reinforcing of enlarging section method bean column node with concrete.
6, according to the job practices of the described structure for strengthening node of beam column by section increase of claim 5, it is characterized in that: in the described steps d, the first rapid hardening pressure-resistant seal glue of using is with last all holes and the gap closing except that hole for injecting glue (10) and steam vent (11) of steel hoop (4), the band (12) that formation is made of rapid hardening pressure-resistant seal glue, after band to be sealed (12) is stiff, bonding with perfusion type steel bonding glue by hole for injecting glue (10) perfusion, the inner air of steel hoop (4) is got rid of by steam vent (11), forms steel bonding glue-line (9).
7, according to the job practices of the described structure for strengthening node of beam column by section increase of claim 5, it is characterized in that: among the described step c, after the crotch (8) that will newly join vertical muscle (7) end is welded on the steel hoop (4), again at the crotch (8) of newly joining vertical muscle (7) end welding angle steel (6) below steel hoop (4) is connected, will newly join the position that the crotch (8) of vertical muscle (7) end is connected with steel hoop (4) simultaneously and weld together with welding angle steel (6).
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| CN2009101044330A CN101649678B (en) | 2009-07-24 | 2009-07-24 | Structure for strengthening node of beam column by section increase method and construction method thereof |
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| CN2009101044330A CN101649678B (en) | 2009-07-24 | 2009-07-24 | Structure for strengthening node of beam column by section increase method and construction method thereof |
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| CN102051984A (en) * | 2010-12-02 | 2011-05-11 | 西安建筑科技大学 | Method for strengthening node of structural members in building |
| CN102561719A (en) * | 2011-12-29 | 2012-07-11 | 吉林建筑工程学院 | Reinforced concrete beam reinforced by bonding steel plate |
| CN102966245A (en) * | 2012-12-07 | 2013-03-13 | 清华大学 | Connecting method of steel beam and existing reinforced concrete column |
| CN102966183A (en) * | 2012-11-23 | 2013-03-13 | 重庆大学 | Steel hoop reinforced concrete beam column node |
| CN106703432A (en) * | 2016-12-28 | 2017-05-24 | 北京城建亚泰建设集团有限公司 | Newly-added steel girder and original reinforced concrete column hoop connecting joint and connecting method thereof |
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| CN101922239A (en) * | 2010-05-25 | 2010-12-22 | 广州华特建筑结构设计事务所 | Steel die-concrete underpinning device and construction method thereof |
| CN101922239B (en) * | 2010-05-25 | 2012-06-06 | 广州华特建筑结构设计事务所 | Steel die-concrete underpinning device and construction method thereof |
| CN102051984A (en) * | 2010-12-02 | 2011-05-11 | 西安建筑科技大学 | Method for strengthening node of structural members in building |
| CN102051984B (en) * | 2010-12-02 | 2012-06-27 | 西安建筑科技大学 | Method for strengthening node of structural members in building |
| CN102561719A (en) * | 2011-12-29 | 2012-07-11 | 吉林建筑工程学院 | Reinforced concrete beam reinforced by bonding steel plate |
| CN102966183A (en) * | 2012-11-23 | 2013-03-13 | 重庆大学 | Steel hoop reinforced concrete beam column node |
| CN102966183B (en) * | 2012-11-23 | 2014-11-12 | 重庆大学 | Steel hoop reinforced concrete beam column node |
| CN102966245A (en) * | 2012-12-07 | 2013-03-13 | 清华大学 | Connecting method of steel beam and existing reinforced concrete column |
| CN106703432A (en) * | 2016-12-28 | 2017-05-24 | 北京城建亚泰建设集团有限公司 | Newly-added steel girder and original reinforced concrete column hoop connecting joint and connecting method thereof |
| CN106907017A (en) * | 2017-04-24 | 2017-06-30 | 华东建筑设计研究院有限公司 | The ruggedized construction and method of the existing prefabricated ledger beam of multilayer Box linear programming |
| CN108240119A (en) * | 2017-12-20 | 2018-07-03 | 同济大学 | A kind of bracing means of concrete frame structure node |
| CN109853964A (en) * | 2018-12-18 | 2019-06-07 | 成都建工第二建筑工程有限公司 | A kind of construction method for steel construction armored concrete mixed structure |
| CN112814151A (en) * | 2020-12-30 | 2021-05-18 | 南京航空航天大学 | Connecting method of basic magnesium sulfate cement concrete assembled frame nodes |
| CN112814151B (en) * | 2020-12-30 | 2022-04-01 | 南京航空航天大学 | Connecting method of basic magnesium sulfate cement concrete assembled frame nodes |
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