CN106437188B - A kind of reinforced concrete structure girder adds the reinforcement means of steel construction box beam - Google Patents
A kind of reinforced concrete structure girder adds the reinforcement means of steel construction box beam Download PDFInfo
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- CN106437188B CN106437188B CN201610754887.2A CN201610754887A CN106437188B CN 106437188 B CN106437188 B CN 106437188B CN 201610754887 A CN201610754887 A CN 201610754887A CN 106437188 B CN106437188 B CN 106437188B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
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Abstract
The invention discloses the reinforcement means that a kind of reinforced concrete structure girder adds steel construction box beam, and steps are as follows：（1）Steel construction box beam is divided into multistage and is lifted, and is lifted to designated floor alien invasion edge；（2）Steel construction box beam is pulled under girder to be reinforced in place for I section；（3）The back both sides of girder respectively drill through a plate stitch, and last layer Vierendeel girder back both sides slot and run through floor, and U-shaped steel plate is embedded on the frame column at girder both ends；（4）The lifting and fixation of I section of steel construction box beam；（5）The front end that I section of steel construction box beam is fixed and rear end connection；（6）Plate stitch concreting；（7）Injecting glue fixes steel construction box beam；（8）Unloading and detection.In building reconstruction by removing former frame column after, the span spatial of bigger can be createed by way of steel construction box beam reinforced steel concrete girder, entire lifting process is convenient and efficient, securely and reliably, cost-effective, shortens the duration.
Description
Technical field
The present invention relates to building engineering fields, and in particular to a kind of reinforced concrete structure girder adds steel construction box beam
Reinforcement means, be particularly suitable for after long-span beams pull out pillar in building reconstruction, the reinforcing to reinforced concrete structure girder.
Background technology
In building reconstruction drags beam to pull out the reinforcing process of column, the reinforcing of girder is either logical often by the mode of steel bonding
The mode for crossing increase beam section is reinforced, and this reinforcing mode has limitation,《Technical specification for concrete structures of high-rise building》
" the girder section height of 6.3.1 frame structures can determine regulation by the 1/10 ~ 1/18 of effective span in JGJ3-2010；Liang Jing
Across not being preferably less than 4 with the ratio between depth of section.The cross-sectional width of beam is not preferably less than the 1/4 of beam section height, is not also preferably less than 200 ",
According to the provision, it is assumed that deck-molding 1m, then span is no more than 18m, even if increase deck-molding and deck-siding will be uneconomical, and beam
It is high, be wider than and will influence to use greatly and beautiful.Therefore, in building reconstruction, in order to create the span spatial of bigger, one kind is needed
The method that girder can be reinforced.
Invention content
The present invention proposes the reinforcement means that a kind of reinforced concrete structure girder adds steel construction box beam, is before being directed to
Phase completes structural support and reinforces, after pulling out frame column, to a kind of reinforcement means of reinforced concrete girder, in armored concrete master
Outsourcing steel-structure box type beam reinforces girder on beam, the present invention suitable for building reconstruction reinforced concrete girder plus
Gu the large-span steel-reinforced concrete girder especially suitable for 18m or more.The present invention is easy for installation, by chain block to steel knot
Structure box beam is promoted, and need not set up integral-scaffold, it is only necessary to a movable Scaffold operating platform is set up,
The effectively save cost of this method, shortens the construction period.
The present invention realizes by following technical solution：
A kind of reinforced concrete structure girder adds the reinforcement means of steel construction box beam, and its step are as follows：
（1）It is lifted by crane outside steel construction box beam camber
Steel construction box beam is divided into multistage and is lifted, first in I section of both sides of steel construction box beam and front end box beam
Lifting lug is set, then hangs over one end of steel wire rope a and steel wire rope b on the suspension hook of truck crane, steel wire rope a and steel wire rope b's is another
One end is separately connected on the lifting lug of I section of both sides of steel construction box beam, is then lifted to designated floor alien invasion edge；
（2）Indoor transporting
It is laid with round steel pipe in floor upper edge transit route, with truck crane close to floor outer edge, by I section of steel construction box beam
It is extend into interior, slowly falls and is shelved in round steel pipe, the steel wire rope b close to indoor side is unclamped, then by steel-structure box
I section of type beam is toward indoor drawing, after I section of steel construction box beam enters indoor floor more than half, unclamp on the outside of steel wire rope a, most
I section of steel construction box beam is pulled under reinforced concrete girder to be reinforced afterwards in place；
（3）Installation prepares
A plate stitch is respectively drilled through in the back both sides of reinforced concrete girder to be reinforced first, and in last layer Vierendeel girder
Back both sides slot and run through floor, and slot and the plate stitch of Vierendeel girder are on same vertical line, hang down at last layer Vierendeel girder back
It directly places a sleeper and covered slot, then one end of steel wire rope c is sleeved on sleeper, the other end of steel wire rope c passes through slot, so
The upper end of chain block is hung on steel wire rope c afterwards, the crampon on chain block is passed through into plate stitch and is transferred to steel construction
Above box beam, it is connect with the lifting lug of steel construction box beam by steel wire rope c；
The embedded U-shaped steel plate on the frame column at reinforced concrete girder both ends to be reinforced, by way of steel bonding and frame
Trestle connects, and by expansion bolt fixed press U-shaped steel plate, makes U-shaped steel plate and frame column firm pasting；
（4）The lifting and fixation of I section of steel construction box beam
Chain block is lifted up simultaneously first, I section of steel construction box beam is made to be bonded armored concrete master to be reinforced
Then the beam bottom of beam is spaced at equal intervals 2-5 square tube perpendicular to plate stitch in reinforced concrete girder top surface, is vertically bored in square tube
Hole then uses the round steel of upper and lower ends rolled thread to be passed through at square tube and plate stitch to I section of beam bottom of steel construction box beam from hole, circle
Steel top rolled thread end is fixed by nut and square tube, backing plate is equipped between nut and square tube, in I section of beam bottom of steel construction box beam
Angle bracket is set, and drill on angle bracket with round steel corresponding position hole, and round steel lower part is consolidated by nut and angle bracket
Fixed, I section of such steel construction box beam finally unclamps chain block with regard to fixation；
（5）The front end that I section of steel construction box beam is fixed and rear end connection
After I section of steel construction box beam fixes, first by the U-shaped steel plate of the front end and frame column of I section of steel construction box beam
It is welded, supporting plate then is set in frame column and I section of bottom of steel construction box beam junction, supporting plate passes through steel bonding and expanding screw
Bolt is fixed with frame column, I section of bottom of supporting plate and steel construction box beam is welded and fixed, then by other sections of steel construction box beam
Make to lift and fix in the same way, be welded and fixed in the junction of every section of steel construction box beam；
（6）Plate stitch concreting
All chain blocks are unclamped, plate stitch template is set up using method constructing and overhanging model is hung, and then carrying out concrete to plate stitch pours
It builds；
（7）Injecting glue
High pressure pouring structure glue is carried out by the hole for injecting glue that steel construction box beam sides is arranged, hole for injecting glue is set from the bottom to top
It sets, spacing is not more than 500mm, can stop when the gas vent overflowing structure glue of steel construction box beam, be cleared up after injecting glue residual
Stay structure glue；
（8）Unloading and detection
After structure glue reaches intensity, bottom angle bracket is removed one by one, round steel is taken out, while being seen with spirit level
It surveys, observes the deformation of steel construction box beam.
The step（4）In plastic bushing is provided at plate stitch, round steel is extended there through, convenient for the round steel later stage return
It receives.
The advantage of the invention is that：In building reconstruction by removing former frame column after, reinforced by steel construction box beam
The mode of reinforced concrete girder can create the span spatial of bigger, the fortune that the present invention passes through innovation steel construction box beam
Defeated, lifting and fixed form, need not set up integral-scaffold in the hoisting process of steel construction box beam, it is only necessary to which one simple
Movable Scaffold, and by using last layer Vierendeel girder as supporting point, be provided with chain block to steel-structure box ellbeam into
Row is promoted, while being fixed in the mode of steel-structure box ellbeam bottom installation angle bracket, and entire lifting process is convenient and efficient,
Securely and reliably, cost-effective, shorten the duration.
Description of the drawings
Fig. 1-1 is the outdoor lifting schematic diagram of steel construction box beam；
Fig. 1-2 is the outdoor lifting schematic diagram for unclamping steel wire rope b steel construction box beams；
Fig. 1-3 is the outdoor lifting schematic diagram for unclamping steel wire rope a steel construction box beams；
Fig. 1-4 is the indoor transporting of steel construction box beam.
Fig. 2-1 is steel construction box girder construction side schematic view；
Fig. 2-2 is steel construction box girder construction both sides lifting lug schematic diagram；
Fig. 2-3 is lifting lug schematic diagram in the box beam of steel construction box beam front end.
Fig. 3-1 is the lifting side schematic view of steel construction box beam reinforced steel concrete girder；
Fig. 3-2 is steel construction box beam package reinforced concrete girder side schematic view；
Fig. 3-3 is round steel upper and lower side connection diagram.
Fig. 4-1 is the left view of Fig. 3-1；
Fig. 4-2 is the left view of Fig. 3-2；
Fig. 4-3 is the left view of Fig. 3-3.
Fig. 5-1 is that steel construction box beam fixes exemplary node figure；
Fig. 5-2 is the steel construction box beam reinforced steel concrete girder schematic diagram for increasing supporting plate.
Fig. 6 is rhs-structure schematic diagram
Fig. 7-1 is the vertical view after steel construction box beam is fixed；
Fig. 7-2 is the vertical view partial enlarged view after steel construction box beam is fixed.
Fig. 8-1 is the front view that steel construction box beam is connect with frame column；
Fig. 8-2 is U-shaped steel plate structure schematic diagram.
Fig. 9-1 is the side view that U-shaped steel plate is connect with frame column；
The side view that Fig. 9-2 steel constructions box beam is connect with frame column.
Figure 10 is support board structure schematic diagram.
Figure 11 is three sections of installation connection diagrams of steel construction box beam.
In figure：1, I section of steel construction box beam；2, II section of steel construction box beam；3, III section of steel construction box beam；4, steel wire rope
a；5, steel wire rope b；6, round steel pipe；7, gas vent；8, sleeper；9, steel wire rope c；10, chain block；11, lifting lug；12, square tube；
13, backing plate；14, nut；15, round steel；16；Angle bracket；17, plate stitch；18, supporting plate；19, frame column；20, U-shaped steel plate；21、
Expansion bolt；22, reinforced concrete girder to be reinforced；23, last layer Vierendeel girder；24, hole for injecting glue.
Specific implementation mode
Below according to Fig. 1-1 to Figure 11, the invention will be further described.
The present invention is illustrated by taking 24m spans as an example, and present invention reinforced concrete structure girder section to be reinforced is with 350
For × 900, steel construction box beam section illustrates for being 400 × 1500.
Steel construction box beam material is Q390, thick 20mm, weighs about 12 tons, steel construction box beam length 24m is divided into steel-structure box
III section 3 of I section 1 of type beam, II section 2 of steel construction box beam and steel construction box beam, per segment length 8m, 4 tons of every section of ≈ of steel construction box beam
≈ 40KN, coefficient of rolling friction of the steel pipe on concrete surface are 0.04, are rolled and are transported using round steel pipe, the pulling force F needed=
40KN × 0.04=1.6KN=160KG, at least two adult can pull；
Suspension centre at every section of steel construction box beam setting 2（Need 4 chain blocks）, angle bracket at 3.
Gap between steel construction box beam and reinforced concrete structure girder to be reinforced is in 2mm ~ 3mm.
A kind of reinforced concrete structure girder adds the reinforcement means of steel construction box beam, and its step are as follows：
（1）It is lifted by crane outside steel construction box beam camber
Steel construction box beam is divided into three sections and is lifted, and with the reinforcement fabrication lifting lug 11 of diameter 16mm and is welded on steel first
In I section of 1 both sides of structure box beam and front end box beam（As shown in Fig. 2-1,2-1,2-3）, then use the QYT25 type automobiles of 25t
It hangs and the steel wire rope a 4 of diameter 20mm and steel wire rope b 5 is hung in the suspension hook of truck crane and hanging for I section 1 of steel construction box beam
On ear 11, it is then lifted to designated floor alien invasion edge.
（2）Indoor transporting
It is laid with round steel pipe 6 in floor upper edge transit route, with truck crane close to floor outer edge, by steel construction box beam I
Section 1 extend into interior, slowly falls and is shelved in round steel pipe 6, unclamps the steel wire rope b 5 close to indoor side, steel-structure box
Then 11 connection stay cord of lifting lug in I section of 1 front end box beam of type beam uses manpower by I section 1 of steel construction box beam toward indoor drawing,
After steel construction box beam enters indoor floor for I section 1 more than half, outside steel wire rope a 4 is unclamped, finally by steel construction box
Beam is pulled to reinforced concrete girder to be reinforced for I section 1 22 times in place（As shown in Fig. 1-1, Fig. 1-2, Fig. 1-3 and Fig. 1-4）.
（3）Installation prepares
The plate stitch 17 of 200mm wide is respectively drilled through in 22 back both sides of reinforced concrete girder to be reinforced first, and upper one
23 back both sides of layer Vierendeel girder open the rectangular channel of 30mm × 100mm and run through floor, are in same vertical line with next laminate seam 17
On, it is disposed vertically a sleeper 8 at 23 back of last layer Vierendeel girder and covered rectangular channel, then by the steel of one diameter 20mm
Cord c 9 is sleeved on sleeper 8, and the other end of steel wire rope c passes through rectangular channel, then chain block 10 is hung over to the steel wire of last layer
It restricts on c 9, the crampon on chain block is passed through into plate stitch 17 and transfers to above steel construction box beam, pass through diameter 20mm
Steel wire rope c 9 is connect with the lifting lug 11 of steel construction box beam（As shown in Fig. 3-1, Fig. 4-1）.
Embedded U-shaped steel plate 20, passes through the side of steel bonding on the frame column 19 at 22 both ends of reinforced concrete girder to be reinforced
Formula is connect with frame column 19, and by 21 fixed press U-shaped steel plate 20 of expansion bolt, U-shaped steel plate 20 is made to be pasted with frame column 19
Securely（As shown in Fig. 8-1, Fig. 8-2, Fig. 9-1）.
（4）The lifting and fixation that I section 1 of steel construction box beam
4 chain blocks 10 are lifted up simultaneously first, so that steel construction box beam is bonded reinforcing bar to be reinforced for I section 1 mixed
Solidifying soil 22 beam bottom of girder（As shown in Fig. 3-2, Fig. 4-2）, then in 22 top surface of reinforced concrete girder between plate stitch 17 is equal
Away from 3 square tubes 12 are placed, the vertical hole of 16mm is bored at plate stitch 17 in square tube 12（As shown in Figure 6）, then straight
The 15 upper and lower ends rolled thread of round steel of diameter 16mm passes through square tube 12 and plate stitch 17 to I section of steel construction box beam from the hole of 16mm
At beam bottom（It is provided with plastic bushing at plate stitch 17, round steel 15 is extended there through, is recycled convenient for 15 later stage of round steel）, on round steel 15
Portion rolled thread end is fixed by nut 14 and square tube 12, backing plate 13 is equipped between nut 14 and square tube 12, in steel construction box beam I
Angle bracket 16 is arranged in 1 beam bottom of section, bores the hole of 16mm with round steel corresponding position on angle bracket 16,15 lower part of round steel passes through spiral shell
Mother 14 is fixed with angle bracket 16, and I section 1 of such steel construction box beam is with regard to fixation, last release chain block 10
（Such as Fig. 3-3, Fig. 4-3, Fig. 5-1）.
（5）The front end that I section 1 of steel construction box beam is fixed and rear end connection
After steel construction box beam fixes for I section 1, first by the U-shaped of the front end of I section 1 of steel construction box beam and frame column 19
Steel plate 20 is welded, and supporting plate 18 then is arranged with I section of 1 bottom of steel construction box beam junction on frame column 19（Figure 10）,
The connection type of supporting plate 18 and frame column 19 is fixed, by supporting plate 18 with U-shaped steel plate 20 by way of steel bonding and expansion bolt 21
It is welded and fixed with I section of 1 bottom of steel construction box beam（Fig. 9-2）, then by II section 2 of steel construction box beam and steel construction box beam III
Section 3 makes to lift and fix in the same way, is welded and fixed in the junction of every section of steel construction box beam（As Fig. 5-2, Fig. 7-1,
Fig. 7-2, Fig. 9-1, shown in Figure 11）.
（6）17 concreting of plate stitch
All chain blocks 10 are unclamped, 17 template of plate stitch is set up using method constructing and overhanging model is hung, then mixed to plate stitch 17
Solidifying soil pours.
（7）Injecting glue
High pressure pouring structure glue is carried out by the hole for injecting glue 24 that steel construction box beam sides is arranged, hole for injecting glue 24 is from the bottom to top
Setting, spacing are not more than 500mm, can stop when steel construction box back portion 7 overflowing structure glue of gas vent, clear after injecting glue
Manage residual structural glue.
（8）Unloading and detection
After structure glue reaches intensity, one by one remove bottom angle bracket 18, round steel 15 is taken out, at the same with spirit level into
Row observation, observes the deformation of steel construction box beam.
Claims (2)
1. a kind of reinforced concrete structure girder adds the reinforcement means of steel construction box beam, its step are as follows：
（1）It is lifted by crane outside steel construction box beam camber
Steel construction box beam is divided into multistage and is lifted, and is arranged in I section of both sides of steel construction box beam and front end box beam first
Lifting lug then hangs over one end of steel wire rope a and steel wire rope b on the suspension hook of truck crane, the other end of steel wire rope a and steel wire rope b
It is separately connected on the lifting lug of I section of both sides of steel construction box beam, is then lifted to designated floor alien invasion edge；
（2）Indoor transporting
Round steel pipe is laid in floor upper edge transit route to stretch into steel construction box beam for I section with truck crane close to floor outer edge
It to interior, slowly falls and is shelved in round steel pipe, the steel wire rope b close to indoor side is unclamped, then by steel construction box beam I
Section is toward indoor drawing, after I section of steel construction box beam enters indoor floor more than half, unclamp on the outside of steel wire rope a, finally by steel
I section of structure box beam is pulled under reinforced concrete girder to be reinforced in place；
（3）Installation prepares
A plate stitch is respectively drilled through in the back both sides of reinforced concrete girder to be reinforced first, and in last layer Vierendeel girder back
Both sides slot and run through floor, and slot and the plate stitch of Vierendeel girder are on same vertical line, are vertically put at last layer Vierendeel girder back
It sets a sleeper and covered slot, then one end of steel wire rope c is sleeved on sleeper, the other end of steel wire rope c passes through slot, then will
The upper end of chain block is hung on steel wire rope c, and the crampon on chain block is passed through plate stitch and is transferred to steel construction box
Above beam, it is connect with the lifting lug of steel construction box beam by steel wire rope c；
The embedded U-shaped steel plate on the frame column at reinforced concrete girder both ends to be reinforced, by way of steel bonding and frame column
Connection, and by expansion bolt fixed press U-shaped steel plate, make U-shaped steel plate and frame column firm pasting；
（4）The lifting and fixation of I section of steel construction box beam
Chain block is lifted up simultaneously first, I section of steel construction box beam is made to be bonded reinforced concrete girder to be reinforced
Then beam bottom is spaced at equal intervals 2-5 square tube perpendicular to plate stitch in reinforced concrete girder top surface, vertically drills in square tube
Hole then uses the round steel of upper and lower ends rolled thread to be passed through at square tube and plate stitch to I section of beam bottom of steel construction box beam from hole, round steel
Top rolled thread end is fixed by nut and square tube, and backing plate is equipped between nut and square tube, is set in I section of beam bottom of steel construction box beam
Angle bracket is set, drill on angle bracket with round steel corresponding position hole, and round steel lower part is fixed by nut and angle bracket,
I section of steel construction box beam finally unclamps chain block with regard to fixation in this way；
（5）The front end that I section of steel construction box beam is fixed and rear end connection
After I section of steel construction box beam fixes, the U-shaped steel plate of the front end of I section of steel construction box beam and frame column is carried out first
Then supporting plate is arranged in frame column and I section of bottom of steel construction box beam junction in welding, supporting plate by steel bonding and expansion bolt with
Frame column is fixed, and I section of bottom of supporting plate and steel construction box beam is welded and fixed, then by other sections of uses of steel construction box beam
Same mode is lifted and is fixed, and is welded and fixed in the junction of every section of steel construction box beam；
（6）Plate stitch concreting
All chain blocks are unclamped, plate stitch template is set up using method constructing and overhanging model is hung, and then carries out concreting to plate stitch；
（7）Injecting glue
High pressure pouring structure glue is carried out by the hole for injecting glue that steel construction box beam sides is arranged, hole for injecting glue is arranged from the bottom to top,
Away from no more than 500mm, it can stop when the gas vent overflowing structure glue of steel construction box beam, residual structural is cleared up after injecting glue
Glue；
（8）Unloading and detection
After structure glue reaches intensity, bottom angle bracket is removed one by one, round steel is taken out, while being observed with spirit level,
Observe the deformation of steel construction box beam.
2. reinforced concrete structure girder according to claim 1 adds the reinforcement means of steel construction box beam, feature
It is：The step（4）In plastic bushing is provided at plate stitch, round steel is extended there through, convenient for the round steel later stage recycle.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107130528A (en) * | 2017-06-16 | 2017-09-05 | 湖北武大珞珈工程结构检测咨询有限公司 | A kind of box reinforcement means of thin-wall U-shaped steel to reinforced beam |
| CN111039192A (en) * | 2019-11-01 | 2020-04-21 | 广东省源天工程有限公司 | Method for hoisting mechanical equipment by adopting aerial relay |
| CN112081404B (en) * | 2020-07-24 | 2022-06-07 | 广厦建设集团有限责任公司 | Improvement of existing Buddha tower structure for additionally arranging praying clock and construction method for hoisting praying clock |
| CN114263374A (en) * | 2021-09-15 | 2022-04-01 | 张红卫 | Prefabricated reinforced concrete variable component and building structure thereof |
| CN115262984A (en) * | 2022-07-15 | 2022-11-01 | 上海二十冶建设有限公司 | Hoisting method for steel bar truss floor bearing plate inside building |
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| JP3741490B2 (en) * | 1996-09-17 | 2006-02-01 | 佐藤工業株式会社 | Seismic reinforcement method for existing concrete structures |
| CN102828623A (en) * | 2012-08-30 | 2012-12-19 | 北京首钢建设集团有限公司 | Construction method for maintaining and locally reinforcing reinforced concrete structure |
| CN103726668A (en) * | 2013-12-30 | 2014-04-16 | 北京工业大学 | Structure reinforcing method in externally-attached steel-encased assembly type PC frame mode |
| CN203783176U (en) * | 2014-03-19 | 2014-08-20 | 华北水利水电大学 | Carbon fiber sheet reinforced structure for transverse tensioning prestress of frame beam |
| CN105756365A (en) * | 2016-03-22 | 2016-07-13 | 武汉大学 | Method for accelerating reinforcement of concrete beam |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3741490B2 (en) * | 1996-09-17 | 2006-02-01 | 佐藤工業株式会社 | Seismic reinforcement method for existing concrete structures |
| CN102828623A (en) * | 2012-08-30 | 2012-12-19 | 北京首钢建设集团有限公司 | Construction method for maintaining and locally reinforcing reinforced concrete structure |
| CN103726668A (en) * | 2013-12-30 | 2014-04-16 | 北京工业大学 | Structure reinforcing method in externally-attached steel-encased assembly type PC frame mode |
| CN203783176U (en) * | 2014-03-19 | 2014-08-20 | 华北水利水电大学 | Carbon fiber sheet reinforced structure for transverse tensioning prestress of frame beam |
| CN105756365A (en) * | 2016-03-22 | 2016-07-13 | 武汉大学 | Method for accelerating reinforcement of concrete beam |
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