CN105113636A - Connecting structure of crane beam and bracket and construction method of connecting structure - Google Patents
Connecting structure of crane beam and bracket and construction method of connecting structure Download PDFInfo
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- CN105113636A CN105113636A CN201510507323.4A CN201510507323A CN105113636A CN 105113636 A CN105113636 A CN 105113636A CN 201510507323 A CN201510507323 A CN 201510507323A CN 105113636 A CN105113636 A CN 105113636A
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- bracket
- crane girder
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- steel slab
- concrete
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Abstract
The invention discloses a connecting structure of a crane beam and a bracket and a construction method of the connecting structure. The connecting structure comprises the crane beam and the bracket disposed on a bent frame column. A bracket pre-embedded steel plate and a crane beam pre-embedded steel plate are arranged between the bracket and the crane beam. A plurality of joint bars are arranged on the bracket. The joint bars respectively penetrate the bracket pre-embedded steel plate and the crane beam pre-embedded steel plate and are then anchored into the crane beam. The crane beam is a cast-in-place continuous crane beam and is casted after the bracket is casted. Tie bars are arranged at the backs of the bracket pre-embedded steel plate and the crane beam pre-embedded steel plate. The construction method includes casting bracket concrete, casting crane beam concrete and welding the bracket pre-embedded steel plate and the crane beam pre-embedded steel plate. The connecting structure has the advantages that the pre-embedded steel plates and the joint bars are arranged at the same time, possibility of overpressure damage of contact faces is avoided, horizontal load and crane beam transverse internal force can be resisted effectively, reliable connection between the bracket and the crane beam is guaranteed, and stable and safe operation of a workshop is facilitated.
Description
Technical field
The present invention relates to syndeton and the construction method thereof of a kind of crane girder and bracket, be mainly applicable to hydropower station factory building, belong to hydroelectric project technical field.
Background technology
In hydroelectric generation factory building, crane girder directly bears the load that bridge crane transmits, then load is passed to bent columns by bracket, bracket and crane girder connecting portion will bear larger local pressure, therefore, the operation of connection to factory building stability and safety handling crane girder and bracket well is most important.
For solving the problem, the mode that cast-in-place crane girder is connected with bracket mainly contains the following two kinds:
(1) reserved joint bar on bracket, after water continuous crane girder, be connected by joint bar between crane girder with bracket; This connected mode takes joint bar to connect bracket and crane girder, reliable and stable, opposing horizontal force and Transverse Internal Force effect better, but bracket and crane girder contact area less, easily there is local failure in concrete under the effect of bridge crane load.
(2) at bracket top pre-embedded steel slab, after when watering continuous crane girder bottom it same pre-embedded steel slab, by Plate Welding bottom bracket pre-embedded steel slab and crane girder after concrete form removal; This connected mode is bottom crane girder and bracket top is all furnished with steel plate, and contact surface local anti-pressure ability is strong, but is connected because both adopt weld all around to stitch, and the effect of opposing horizontal force and Transverse Internal Force effect is poor.
Summary of the invention
The object of the invention is to, for the deficiency existing for existing continuous crane girder and bracket connected mode, provide syndeton and the construction method thereof of a kind of crane girder and bracket.This syndeton can well resist bracket Nodes horizontal force and Transverse Internal Force, can be supplied to again the enough compressive strength of contact surface and destroy to prevent local compression, reach the effect that prior art can not be taken into account.
The present invention is achieved by following technical solution.
The syndeton of a kind of crane girder and bracket, comprise crane girder and be arranged on the bracket on bent columns, bracket pre-embedded steel slab and crane girder pre-embedded steel slab is furnished with between described bracket and crane girder, bracket is furnished with some joint bars, and described joint bar anchors in crane girder after being each passed through bracket pre-embedded steel slab and crane girder pre-embedded steel slab.
Described crane girder is cast-in-place continuous crane girder, and builds after bracket has been built.
Described crane girder pre-embedded steel slab width 100mm larger than bracket width, height is identical with crane girder web thickness.
Described crane girder pre-embedded steel slab and the bracket pre-embedded steel slab back side are all furnished with lacing wire.
Described crane girder pre-embedded steel slab and bracket pre-embedded steel slab are equipped with the open-work of diameter slightly larger than joint bar.
Described bracket pre-embedded steel slab width is identical with bracket width, the large 100mm of aspect ratio crane girder web thickness.
Described lacing wire all adopts weld all around to be connected with crane girder pre-embedded steel slab and bracket pre-embedded steel slab.
1 anchorage length in bracket and crane girder is respectively stretched at described joint bar two ends.
Described joint bar diameter is 25mm.
A construction method for crane girder and bracket syndeton, comprises following method step:
A, build bracket concrete: the bracket pre-embedded steel slab and joint bar that are welded with lacing wire are fixed on bracket assigned address, and water bracket concrete.
B, build crane girder concrete: reach design strength and after form removal until bracket concrete in step a, colligation crane girder reinforcing bar fixed crane beam pre-embedded steel slab are to relevant position, by joint bar that bracket is reserved through open-work corresponding on crane girder pre-embedded steel slab, then formwork erection build crane girder concrete;
C, welding crane girder pre-embedded steel slab and bracket pre-embedded steel slab: reach design strength until crane girder concrete in step b and after form removal, crane girder pre-embedded steel slab welded with bracket pre-embedded steel slab.
Joint bar in described step a and bracket pre-embedded steel slab are imbedded in bracket concrete when bracket is built simultaneously.
Joint bar upper end anchoring when building crane girder in described step b enters in the concrete of crane girder.
In described step c, crane girder pre-embedded steel slab welds after the form removal of crane girder concrete with bracket pre-embedded steel slab, and welding adopts weld all around, and weld seam is arranged at crane girder web both sides and bracket width both sides.
The invention has the beneficial effects as follows:
Compared with prior art, the present invention, by arranging pre-embedded steel slab and joint bar simultaneously, has both avoided the possibility that contact surface generation superpressure is destroyed, has been highly resistant to again horizontal loading and crane girder Transverse Internal Force.Ensure that the stable connection of bracket and crane girder is reliable, be conducive to factory building stability and safety and run.
Accompanying drawing explanation
Fig. 1 is cross-sectional configuration schematic diagram of the present invention;
Fig. 2 is the A-A direction view of Fig. 1;
Fig. 3 is the plane structure schematic diagram of crane girder pre-embedded steel slab in the present invention;
Fig. 4 is the plane structure schematic diagram of bracket pre-embedded steel slab in the present invention.
In figure: 1-bracket, 2-bent columns, 3-crane girder, 4-crane girder pre-embedded steel slab, 5-bracket pre-embedded steel slab, 6-joint bar, 7-lacing wire, 8-open-work, 9-weld seam.
Detailed description of the invention
Technical scheme of the present invention is further described below in conjunction with accompanying drawing, but described in claimed scope is not limited to.
As shown in Figures 1 to 4, the syndeton of a kind of crane girder of the present invention and bracket, comprise crane girder 3 and be arranged on the bracket 1 on bent columns 2, bracket pre-embedded steel slab 5 and crane girder pre-embedded steel slab 4 is furnished with between described bracket 1 and crane girder 3, bracket 1 is furnished with some joint bars 6, and described joint bar 6 anchors in crane girder 3 after being each passed through bracket pre-embedded steel slab 5 and crane girder pre-embedded steel slab 4.In actual applications, described joint bar 6 is divided into two arrangements to put.The technical program is compared with relevant art, and when crane girder of the prior art and bracket adopt merely joint bar to be connected, under the effect of bridge crane load, crane girder and bracket interface pressure are comparatively large, superpressure easily occurs and destroys; When adopting Plate Welding to connect, effectively can not resist horizontal loading and crane girder Transverse Internal Force again.Adopt the syndeton described in the technical program, owing to existing while pre-embedded steel slab and joint bar, both avoided the possibility that contact surface generation superpressure is destroyed, and be highly resistant to again horizontal loading and crane girder Transverse Internal Force.
Described crane girder 3 is cast-in-place continuous crane girder, and builds after bracket 1 has been built.
Described crane girder pre-embedded steel slab 4 width 100mm larger than bracket 1 width.Like this, pre-embedded steel slab bottom crane girder can be made to form faulting of slab ends at width and bracket top pre-embedded steel slab, be convenient to implement fillet weld at pre-embedded steel slab width two ends, bracket top and connect two pre-embedded steel slabs, height is identical with crane girder 3 web thickness.Wherein pre-embedded steel slab thickness is 20mm.
Described crane girder pre-embedded steel slab 4 back side is furnished with lacing wire 7, and lacing wire 7 adopts weld all around to be connected with crane girder pre-embedded steel slab 4, and crane girder pre-embedded steel slab 4 is provided with the open-work 8 of diameter slightly larger than joint bar 6, for passing joint bar 6.
Described bracket pre-embedded steel slab 5 width is identical with bracket 1 width, the large 100mm of aspect ratio crane girder 3 web thickness.Like this, pre-embedded steel slab bottom crane girder can be made to form faulting of slab ends in short transverse and bracket top pre-embedded steel slab, be convenient to implement fillet weld at pre-embedded steel slab short transverse two ends, bracket top and connect two pre-embedded steel slabs, wherein crane girder 3 web thickness is 20mm.
Described bracket pre-embedded steel slab 5 back side is furnished with lacing wire 7, and lacing wire adopts weld all around to be connected with 7 bracket pre-embedded steel slabs 5, and bracket pre-embedded steel slab 5 is provided with the open-work 8 of diameter slightly larger than joint bar 6, for passing joint bar 6.
1 anchorage length in bracket 1 and crane girder 3 is respectively stretched at described joint bar 6 two ends.Wherein, 1 anchorage length equals 50d, and d is bar diameter.
Described joint bar 6 diameter is 25mm.
The present invention, when constructing, mainly carries out in accordance with the following steps:
A, build bracket concrete: the bracket pre-embedded steel slab 5 and joint bar 6 that are welded with lacing wire 7 are fixed on bracket 1 assigned address, and water bracket 1 concrete.Before fixing bracket pre-embedded steel slab 5, the good reinforcing bar of colligation has been existed side by side mould;
B, build crane girder concrete: reach design strength and after form removal until bracket in step a 1 concrete, colligation crane girder 3 reinforcing bar fixed crane beam pre-embedded steel slab 4 to relevant position, by joint bar 6 reserved on bracket 1 through open-work 8 corresponding on crane girder pre-embedded steel slab 4, then formwork erection build crane girder 3 concrete;
C, welding crane girder pre-embedded steel slab and bracket pre-embedded steel slab: reach design strength until crane girder in step b 3 concrete and after form removal, crane girder pre-embedded steel slab 4 welded with bracket pre-embedded steel slab 5.
Joint bar 6 in described step a is imbedded when bracket 1 is built in bracket 1 concrete with bracket pre-embedded steel slab 5 simultaneously.
Joint bar 6 upper end anchoring when building crane girder 3 in described step b enters in the concrete of crane girder 3.
In described step c, crane girder pre-embedded steel slab 4 welds after the form removal of crane girder 3 concrete with bracket pre-embedded steel slab 5, and welding adopts weld all around, and weld seam 9 is arranged at crane girder web both sides and bracket 1 width both sides.
The present invention success applies in Laos's south bank Hydropower Project house bent frame post and crane girder structure, and structure bears the test of unit heaviest piece lifting load.For improving the pressure of crane girder and bent columns bracket contact surface, the supporting capacity in enhanced level direction serves good effect, has the prospect of popularization.
Claims (10)
1. the syndeton of a crane girder and bracket, it is characterized in that: comprise crane girder (3) and be arranged on the bracket (1) on bent columns (2), bracket pre-embedded steel slab (5) and crane girder pre-embedded steel slab (4) is furnished with between described bracket (1) and crane girder (3), bracket (1) is furnished with some joint bars (6), and described joint bar (6) anchors in crane girder (3) after being each passed through bracket pre-embedded steel slab (5) and crane girder pre-embedded steel slab (4).
2. the syndeton of a kind of crane girder according to claim 1 and bracket, is characterized in that: described crane girder (3) is cast-in-place continuous crane girder, and builds after bracket (1) has been built.
3. the syndeton of a kind of crane girder according to claim 1 and bracket, it is characterized in that: described crane girder pre-embedded steel slab (4) width 100mm larger than bracket (1) width, height is identical with crane girder (3) web thickness.
4. the syndeton of a kind of crane girder according to claim 1 and bracket, is characterized in that: described crane girder pre-embedded steel slab (4) and bracket pre-embedded steel slab (5) back side are all furnished with lacing wire (7).
5. the syndeton of a kind of crane girder according to claim 1 and bracket, is characterized in that: described crane girder pre-embedded steel slab (4) and bracket pre-embedded steel slab (5) are equipped with the open-work (8) of diameter slightly larger than joint bar (6).
6. the syndeton of a kind of crane girder according to claim 4 and bracket, is characterized in that: described lacing wire (7) all adopts weld all around to be connected with crane girder pre-embedded steel slab (4) and bracket pre-embedded steel slab (5).
7. the construction method of crane girder and bracket syndeton as described in claim 1 to 6 any one, is characterized in that: comprise following method step:
A, build bracket concrete: the bracket pre-embedded steel slab (5) and joint bar (6) that are welded with lacing wire (7) are fixed on bracket (1) assigned address, and water bracket (1) concrete.
B, build crane girder concrete: reach design strength and after form removal until bracket in step a (1) concrete, colligation crane girder (3) reinforcing bar fixed crane beam pre-embedded steel slab (4) are to relevant position, by joint bar (6) upper reserved for bracket (1) through the upper corresponding open-work (8) of crane girder pre-embedded steel slab (4), then formwork erection build crane girder (3) concrete;
C, welding crane girder pre-embedded steel slab and bracket pre-embedded steel slab: reach design strength until crane girder in step b (3) concrete and after form removal, crane girder pre-embedded steel slab (4) welded with bracket pre-embedded steel slab (5).
8. the construction method of a kind of crane girder according to claim 7 and bracket syndeton, is characterized in that: the joint bar (6) in described step a and bracket pre-embedded steel slab (5) are imbedded in bracket (1) concrete when bracket (1) is built simultaneously.
9. the construction method of a kind of crane girder according to claim 7 and bracket syndeton, is characterized in that: the anchoring when building crane girder (3) of joint bar (6) upper end in described step b enters in the concrete of crane girder (3).
10. the construction method of a kind of crane girder according to claim 7 and bracket syndeton, it is characterized in that: in described step c, crane girder pre-embedded steel slab (4) welds after crane girder (3) concrete form removal with bracket pre-embedded steel slab (5), welding adopts weld all around, and weld seam (9) is arranged at crane girder web both sides and bracket (1) width both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510507323.4A CN105113636A (en) | 2015-08-18 | 2015-08-18 | Connecting structure of crane beam and bracket and construction method of connecting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510507323.4A CN105113636A (en) | 2015-08-18 | 2015-08-18 | Connecting structure of crane beam and bracket and construction method of connecting structure |
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| CN105113636A true CN105113636A (en) | 2015-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510507323.4A Pending CN105113636A (en) | 2015-08-18 | 2015-08-18 | Connecting structure of crane beam and bracket and construction method of connecting structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105113626A (en) * | 2015-08-19 | 2015-12-02 | 广西矿建集团有限公司 | Construction method of cast-in-place column precast beam and plate structure |
| CN110258470A (en) * | 2019-06-24 | 2019-09-20 | 中国葛洲坝集团建设工程有限公司 | A kind of large-sized concrete bracket rapid construction device and method |
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Patent Citations (5)
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| KR20100121864A (en) * | 2009-05-11 | 2010-11-19 | 대림산업 주식회사 | Joint structure of pc beam for use in construction of building using prc integrating method |
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| 王仁坤等: "《水工设计手册》", 31 January 2013 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105113626A (en) * | 2015-08-19 | 2015-12-02 | 广西矿建集团有限公司 | Construction method of cast-in-place column precast beam and plate structure |
| CN110258470A (en) * | 2019-06-24 | 2019-09-20 | 中国葛洲坝集团建设工程有限公司 | A kind of large-sized concrete bracket rapid construction device and method |
| CN110258470B (en) * | 2019-06-24 | 2024-03-12 | 中国葛洲坝集团建设工程有限公司 | Quick construction device and method for large-scale concrete bracket |
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Application publication date: 20151202 |