Combining structure welding contraction type syndeton and construction technology
Technical field
The present invention relates to steel-concrete combined structure, particularly relate to a kind of combining structure welding contraction type syndeton and construction technology.
Background technology
At present, there is shrinkage and creep in the concrete in combining structure, but connecting key can not strain in concrete shrinkage and creep process, the frange plate made as flat plate can not shrink when concrete shrinkage, the longitudinal compressive stress transmitted when also assume responsibility for concrete shrinkage, this patent energy frange plate and concrete collaborative variation, utilize blockage effect during welding, make frange plate possess certain strain when concrete shrinkage to shrink, decrease concrete shrinkage crack and combining structure stresses re-distribution phenomenon.
Summary of the invention
The present invention is directed to the frange plate that flat plate in prior art makes can not shrink when concrete shrinkage, the longitudinal compressive stress transmitted when also assume responsibility for concrete shrinkage, when shrinking with when creeping after concreting, steel plate and concrete is caused to shell, concrete is even caused to crack, affect the shortcomings such as the overall construction intensity of combining structure, provide a kind of by arranging connection attachment strap, and after concreting, adjacent foil listrium is welded, the welding of frange plate is shunk to occur with shrinking with concrete creeping simultaneously, decrease combining structure welding contraction type syndeton and the construction technology of concrete shrinkage crack and combining structure stresses re-distribution phenomenon.
In straight steel web steel-concrete combined structure, because straight steel web does not then possess fold effect or longitudinal contraction strain capacity, therefore cause longitudinal longitudinal contraction strain capacity of frange plate also very limited.And when web adopts corrugated sheet steel, due to the specific fold effect of Wavelike steel webplate, longitudinally can make Wavelike steel webplate cooperative response in creep and shrinkage of concrete, creep of concrete and contraction can cause the connecting key combined with it to shrink, but the especially straight frange plate of connecting key or roof and floor limit systole response.
In order to solve the problems of the technologies described above, the present invention is solved by following technical proposals:
Combining structure welding contraction type syndeton, comprise Wavelike steel webplate, frange plate, concrete composition, described frange plate one side is welded with Wavelike steel webplate, another side is combined with concrete, frange plate is segmentation breakaway-element, comprise left wing's listrium and right flank listrium, be welded with and be connected attachment strap between left wing's listrium with right flank listrium, left wing's listrium and right flank listrium are by being welded to connect.The one end connecting attachment strap is welded with left wing's listrium or right flank listrium, and the other end does not weld, and can ensure horizontal sliding when frange plate shrinks.
As preferably, described frange plate two end is welded with spacing end plate.
For preferably, described connection attachment strap is welded in frange plate and is connected side with concrete.Connect the effect that attachment strap also plays mortar leakage prevention.
As preferably, the distance that described left wing's listrium and right flank listrium disconnect is greater than 1mm, is less than 22mm, and left wing's listrium and the right flank listrium of gap are provided with one side groove; Left wing's listrium is provided with left Bolted End-plate, right flank listrium is provided with right Bolted End-plate, and left Bolted End-plate and right Bolted End-plate are by high strength exploitation, left Bolted End-plate and right Bolted End-plate both sides weld bolt end plate stiffener.Before left wing's listrium and right flank listrium are welded to connect, adopt bolt the disconnection spacing of left wing's listrium and right flank listrium to be reduced, then weld.One side groove is used for welding of left wing's listrium and right flank listrium.
As preferably, described frange plate is provided with micro-shape strain wave, and micro-shape strain wave is micro-shape strain wave of evagination crest, the wave height of micro-shape strain wave be the 3-12 of frange plate thickness doubly, the distance D between adjacent micro-shape strain wave crest and crest is for being greater than 1000mm.Fragment bit has installed micro-shape strain wave, and the wave height of micro-shape strain wave is less than 12 times of frange plate thickness.Micro-crest of shape strain wave and the spacing of crest are greater than 1000MM.
As preferably, described frange plate is welded with peg, the root that peg welds with frange plate is provided with space operation cover.
As preferably, described space operation cover is flexible rubber ring or thin type steel bushing, and flexible rubber ring thickness is greater than 0.5 millimeter, and flexible rubber ring is ageing-resistant vinyl, Polyurethane or silica type macromolecular compound.Because flexible rubber ring has certain elasticity, in the process of therefore creeping at concrete, slowly power is passed to peg by the mode of the connection of flexible rubber ring flexibility, frange plate is passed to again by peg, steel work can be reduced to greatest extent firmly to contact with concrete, avoid concrete to ftracture.Leave activity space at peg and frange plate root position, enable peg and concrete collaborative variation, peg possesses certain strain space when concrete shrinkage, decreases concrete shrinkage crack and combining structure stresses re-distribution.Thin type steel bushing is the compressing steel bushing of steel sheet, and have easy to make, install simple advantage, meanwhile, thin type steel bushing, again as steel work and concrete connecting key, can improve steel work and concrete bonding strength.
Combining structure welding contraction type syndeton construction technology, comprises following operation: A, be connected side at frange plate with concrete, by left wing's listrium or right flank listrium be connected attachment strap and weld; B, frange plate to be welded with Wavelike steel webplate; C, construction concrete; D, left wing's listrium directly to be welded with right flank listrium.Connect attachment strap and left wing's listrium or the wherein block welding of right flank listrium, the other end is free end, and when left wing's listrium welds with right flank listrium, two blocks of frange plates mutually can be close to translation in the process of contraction, are unlikely to the restriction being subject to connection attachment strap.
As preferably, in described step D, when concrete reaches more than 50% intensity, left wing's listrium and right flank listrium are directly welded to connect.
As preferably, in described described step B, frange plate and Wavelike steel webplate are welded as two-step method and weld, and are welded on first in process B and adopt segmentation tack welding, and second time is welded on concrete when reaching more than 50% intensity, welds comprehensively.Frange plate, with micro-shape strain wave, utilizes later stage second time welding, utilizes corrugated welding bead track, reaches contraction longitudinally worked in coordination with by frange plate usefulness with concrete.The acting as of segmentation tack welding ensure frange plate and Wavelike steel webplate manufacturing, transport and the Stability Analysis of Structures of construction stage in earlier stage, comprehensive weld act as and make frange plate generation longitudinal contraction, reach and concrete collaborative strain.
The present invention is owing to have employed above technical scheme, there is significant technique effect: the present invention is by arranging connection attachment strap, and after concreting, adjacent foil listrium is welded, the welding of frange plate is shunk to occur with shrinking with concrete creeping simultaneously, decrease concrete shrinkage crack and combining structure stresses re-distribution phenomenon, increase the longitudinal extension performance of connecting key, to adapt to concrete shrinkage and creep in combining structure, concrete is avoided to produce shrinkage crack.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention 1.
Fig. 2 is the structural representation of the embodiment of the present invention 2.
The toponym that in above accompanying drawing, each number designation refers to is as follows: wherein 1-Wavelike steel webplate, 2-frange plate, 3-peg, 4-concrete, 5-connection attachment strap, 6-space operation cover, 7-spacing end plate, 9-Bolted End-plate stiffener, 21-micro-shape strain wave, 22-left wing listrium, 23-right flank listrium, 81-high-strength bolt, 82-left Bolted End-plate, 83-right Bolted End-plate.
Detailed description of the invention
The present invention is described in further detail with embodiment below in conjunction with accompanying drawing 1 to Fig. 2:
Embodiment 1
Combining structure welding contraction type syndeton, as shown in Figure 1, comprise Wavelike steel webplate 1, frange plate 2, concrete 4 form, described frange plate 2 one side is welded with Wavelike steel webplate 1, another side is combined with concrete 4, and frange plate 2 is segmentation breakaway-element, comprises left wing's listrium 22 and right flank listrium 23, be welded with between left wing's listrium 22 with right flank listrium 23 and be connected attachment strap 5, left wing's listrium 22 and right flank listrium 23 are by being welded to connect.The one end connecting attachment strap 5 is welded with left wing listrium 22 or right flank listrium 23, and the other end does not weld, and can ensure horizontal sliding when frange plate 2 shrinks.
Frange plate 2 two end is welded with spacing end plate 7.Connection attachment strap 5 is welded in frange plate 2 and is connected side with concrete 4.Connect the effect that attachment strap also plays mortar leakage prevention.
The distance that left wing's listrium 22 and right flank listrium 23 disconnect is 4mm, and left wing's listrium 22 and the right flank listrium 23 of gap are provided with one side groove; Left wing's listrium 22 is provided with left Bolted End-plate 82, right flank listrium 23 is provided with right Bolted End-plate 83, and left Bolted End-plate 82 is connected by high-strength bolt 81 with right Bolted End-plate 83, left Bolted End-plate 82 and right Bolted End-plate 83 both sides weld bolt end plate stiffener 9.Before left wing's listrium 22 and right flank listrium 23 are welded to connect, adopt bolt the disconnection spacing of left wing's listrium 22 with right flank listrium 23 to be reduced, then weld.One side groove is used for welding of left wing's listrium 22 and right flank listrium 23.
Frange plate 2 is welded with peg 3, the root that peg 3 welds with frange plate 2 is provided with space operation and overlaps 6.Space operation cover 6 is flexible rubber ring, and flexible rubber ring thickness is greater than 0.5 millimeter, and flexible rubber ring is ageing-resistant vinyl, Polyurethane or silica type macromolecular compound.Because flexible rubber ring has certain elasticity, in the process of therefore creeping at concrete, slowly power is passed to peg 3 by the mode of the connection of flexible rubber ring flexibility, frange plate 2 is passed to again by peg 3, steel work can be reduced to greatest extent firmly to contact with concrete, avoid concrete to ftracture.Leave activity space at peg and frange plate root position, enable peg and concrete collaborative variation, peg possesses certain strain space when concrete shrinkage, decreases concrete shrinkage crack and combining structure stresses re-distribution.
Combining structure welding contraction type syndeton construction technology, comprises following operation: A, be connected side at frange plate 2 with concrete 4, by left wing's listrium 22 be connected attachment strap 5 and weld; B, frange plate 2 to be welded with Wavelike steel webplate 1; C, construction concrete 4; D, left wing's listrium 22 directly to be welded with right flank listrium 23.
In step D, when concrete reaches more than 50% intensity, left wing's listrium 22 and right flank listrium 23 are directly welded to connect.In described step B, frange plate 2 is welded as two-step method with Wavelike steel webplate 1 and welds, and is welded on first in process B and adopts segmentation tack welding, and second time is welded on concrete when reaching more than 50% intensity, welds comprehensively.
Embodiment 2
As shown in Figure 2, the difference of the present embodiment and embodiment 1 is: the distance that left wing's listrium 22 and right flank listrium 23 disconnect is 16mm, and left wing's listrium 22 and the right flank listrium 23 of gap are provided with one side groove; Left wing's listrium 22 is provided with left Bolted End-plate 82, right flank listrium 23 is provided with right Bolted End-plate 83, and left Bolted End-plate 82 is connected by high-strength bolt 81 with right Bolted End-plate 83.Before left wing's listrium 22 and right flank listrium 23 are welded to connect, adopt bolt the disconnection spacing of left wing's listrium 22 with right flank listrium 23 to be reduced, then weld.One side groove is used for welding of left wing's listrium 22 and right flank listrium 23.Due to left wing's listrium 22 be provided with left Bolted End-plate 82, right flank listrium 23 is provided with right Bolted End-plate 83, when reaching more than 50% intensity, by high-strength bolt 81, left Bolted End-plate 82 can also be linked together with right Bolted End-plate 83, thus reach and tighten up left wing's listrium 22 and right flank listrium 23, make adjacent foil listrium and concrete contraction work in coordination with the object of carrying out, reduce the crackle that concrete shrinkage causes.
Frange plate 2 is provided with micro-shape strain wave 21, and micro-shape strain wave 21 is micro-shape strain wave of evagination crest, and the wave height of micro-shape strain wave 21 is 6 times of frange plate 2 thickness, and the distance D between adjacent micro-shape strain wave 21 crest and crest is 1300mm.Fragment bit has installed micro-shape strain wave, and the wave height of micro-shape strain wave is less than 12 times of frange plate thickness.The wave height of micro-shape strain wave 21 is 4 times, 8 times, 9 times, 12 times, 14 times of frange plate 2 thickness, and the crest of micro-shape strain wave and the spacing D of crest can also be 1000mm, 1200mm, 1400mm, 1500mm, 1600mm, 1800mm, 2000mm, 2400mm, 2600mm, 3000mm.
Space operation cover 6 is thin type steel bushing.Thin type steel bushing is the compressing steel bushing of steel sheet, have easy to make, simple advantage is installed, meanwhile, thin type steel bushing under peg generation shearing action, because thin type steel bushing inside is cavity, easily deform, make peg 3 root leave activity space, make the restriction not being subject to peg 3 root during concrete shrinkage and creep, the two can collaborative variation.
Combining structure welding contraction type syndeton construction technology, comprises following operation: A, be connected side at frange plate 2 with concrete 4, by right flank listrium 23 be connected attachment strap 5 and weld; B, frange plate 2 to be welded with Wavelike steel webplate 1; C, construction concrete 4; D, left wing's listrium 22 directly to be welded with right flank listrium 23.
In step D, when concrete reaches more than 50% intensity, left wing's listrium 22 and right flank listrium 23 are directly welded to connect.In described step B, frange plate 2 is welded as two-step method with Wavelike steel webplate 1 and welds, and is welded on first in process B and adopts segmentation tack welding, and second time is welded on concrete when reaching more than 50% intensity, welds comprehensively.Frange plate 2, with micro-shape strain wave, utilizes later stage second time welding, utilizes corrugated welding bead track, reaches contraction longitudinally worked in coordination with by frange plate usefulness with concrete.The acting as of segmentation tack welding ensure frange plate 2 and Wavelike steel webplate 1 manufacturing, transport and the Stability Analysis of Structures of construction stage in early stage, comprehensive weld act as and make frange plate 2 that longitudinal contraction occur, reach and concrete collaborative strain.In described operation A on frange plate weld stud, and load space operation cover.
In a word, the foregoing is only preferred embodiment of the present invention, all equalizations done according to the present patent application the scope of the claims change and modify, and all should belong to the covering scope of patent of the present invention.