CN105064208B - A kind of deck structrue combined with steel bridge deck by prefabricated U HPC plate and construction method thereof - Google Patents
A kind of deck structrue combined with steel bridge deck by prefabricated U HPC plate and construction method thereof Download PDFInfo
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- CN105064208B CN105064208B CN201510474884.9A CN201510474884A CN105064208B CN 105064208 B CN105064208 B CN 105064208B CN 201510474884 A CN201510474884 A CN 201510474884A CN 105064208 B CN105064208 B CN 105064208B
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Abstract
The present invention relates to a kind of deck structrue combined by prefabricated ultra-high performance concrete plate and construction method thereof with steel bridge deck, the ultra-high performance concrete plate on steel bridge deck including steel bridge deck and covering, ultra-high performance concrete plate interval arranges and is provided with the cast-in-place band of ultra-high performance concrete between adjacent ultra-high performance concrete plate, and being connected with steel bridge deck through cement based adhesive bottom ultra-high performance concrete plate forms combined bridge deck plate structure.Shear connector is preferably set in cast-in-place band and strengthens the connection effect of precoated plate and steel bridge deck.This construction method comprises the following steps: girder steel and steel bridge deck construction；Ultra-high performance concrete precoated plate makes and installs；The cast-in-place belt construction of ultra-high performance concrete；Floorings surface construction.This structure not only reasonable stress, intensity is high, and rigidity is big, be prevented effectively from the generation of Steel Bridge Deck system disease, and simple in construction, reduce ultra-high performance concrete cast-in-place time produce bigger contraction, it is prone to factory's batch production, there is great practical value and good economic benefit.
Description
Technical field
The present invention relates to bridge deck structure technical field, a kind of deck structrue combined by prefabricated ultra-high performance concrete plate and construction method with steel bridge deck.
Background technology
The bridge deck structure of highway steel bridge is mainly made up of floorings and deck paving, is directly to bear wheel load on bridge and the primary structure transferring it on girder, is also one of the position of rapid wear in bridge structure.It is mainly manifested in steel bridge deck cracking and the fragile disease of deck paving.Although steel bridge deck and paving steel bridge deck have been done substantial amounts of theory and experimental study by domestic and abroad bridge circle and road circle personage, attempt improving the material property of compound of mating formation, optimizing the methods such as pave-load layer thickness, improvement Steel Bridge Deck structure, raising welding procedure technique.But from the point of view of ultimate principle, owing to steel bridge deck stiffness by itself is low, and flexible pave-load layer modulus low (particularly summer), bridge deck rigidity and the stress reduced in each layer can not be effectively improved, the most difficult steel bridge deck bigger with deformation of its deformation is coordinated, and the most fundamentally solves the appearance of bridge deck structure disease.
In the prior art, being inspired with application by the research of skyscraper Composite Slab with Metal Deck, some scholars attempt compoboard being applied to floorings to improve bridge floor rigidity, it is to avoid the generation of Steel Bridge Deck system disease.Owing to bridge has the features such as span is big, load is big, some scholars trial lightweight concrete, steel fiber reinforced concrete, high performance concrete again replace normal concrete.But under Vehicle Load, it is positioned at floorings at ribbed stiffener, diaphragm plate and midfeather and can form hogging moment area due to supporting role, being limited by the tensile strength of material self, structure stress still can not meet requirement, still occurs deck paving cracking phenomena in engineering practice.On the other hand, bridge deck structure is directly exposed under environment, bears the external loads such as driving, People's Bank of China, wind-force and temperature, and the effect of the environmental factors such as humidity, air institute chloride ion-containing.Therefore, bridge deck structure, in addition to possessing enough intensity, rigidity and good overall performances, also should have enough cracking resistance, shock resistance, the performance such as wear-resisting.
In the prior art, having a kind of steel and ultra-high performance concrete combined bridge deck structure, its shearing resistance structure uses peg and PBL connector, as shown in Figure 1 (using weldering nail as the example of conventional shear connector 5).Ultra-high performance concrete (UHPC) is the very-high performance Fiber Reinforced Cement Based Composites of a kind of high intensity, high-modulus, high ductility, and by mixing the steel fibre of certain volume content in UHPC layer and can arrange that bar-mat reinforcement further enhances the resistance to tension of structure.UHPC has high compactness, high impervious coefficient simultaneously so that steel bridge deck is in good corrosion-resistant state.This kind of combined bridge deck structure uses integral cast-in-situ construction, due to the easy shrinkage cracking of ultra-high performance concrete, existing cast-in-place construction technology cannot ensure construction quality, and the maintenance difficulty of large-area cast-in-place concrete is the biggest, concrete strength can be subject to the biggest reduction because maintenance is not in place, and this will greatly reduce the life-span of bridge deck pavement.If taking working measure to overcome the unfavorable factor that integral cast-in-situ construction produces, it will to cause operating expenses to be significantly increased.
Summary of the invention
In view of the deficiencies in the prior art, it is an object of the invention to provide a kind of deck structrue combined by prefabricated ultra-high performance concrete plate and construction method with steel bridge deck, this structure not only reasonable stress, intensity is high, and rigidity is big, is prevented effectively from the generation of Steel Bridge Deck system disease, and it is workable to construct, it is prone to factory's batch production, it is to avoid the hidden danger that integral cast-in-situ is brought, reduces construction cost.
To achieve these goals, first technical scheme of the present invention is: a kind of by the deck structrue of prefabricated ultra-high performance concrete plate with steel bridge deck combination, the ultra-high performance concrete plate on steel bridge deck including steel bridge deck and covering, described ultra-high performance concrete plate interval arranges and is provided with the cast-in-place band of ultra-high performance concrete between adjacent ultra-high performance concrete plate, and being connected with steel bridge deck through cement based adhesive bottom described ultra-high performance concrete plate forms combined bridge deck plate structure.
Further, one or more during main material cement includes Portland cement, sulphate aluminium cement, alkali-excited cement, magnesium cement in described cement based adhesive.
Further, described ultra-high performance concrete floorings are to be poured by ultra-high performance concrete to form, described ultra-high performance concrete is RPC, very-high performance fibre reinforced concrete or slip casting fiber concrete, the fiber added in described ultra-high performance concrete layer includes steel fibre, glass fibre, synthetic fibers, carbon fiber, basalt fibre, and fiber content is 1% ~ 10%.
Further, described steel bridge deck is with longitudinal stiffener or the stiffener with transverse stiffener or having vertical, horizontal ribbed stiffener or the steel plate without ribbed stiffener simultaneously.
Further, the seam shape between described ultra-high performance concrete precoated plate and cast-in-place band is flush joint or rabbet-shaped seam or acute profile of tooth seam.
Further, being equipped with reinforcing bar in described ultra-high performance concrete precoated plate and the cast-in-place band of ultra-high performance concrete, the reinforcing bar in described ultra-high performance concrete precoated plate stretches out from ultra-high performance concrete precoated plate two ends and band cast-in-place with ultra-high performance concrete, the reinforcing bar of configuration is connected.
Further, at the described cast-in-place band between ultra-high performance concrete precoated plate, it is provided with shear connector to direction across bridge spacing along along bridge, described shear connector welds with described steel bridge deck, and be positioned in the cast-in-place band of described ultra-high performance concrete, described shear connector is peg, or perforated panel, or channel-section steel, or steel loop.
Further, by certain spacing reserving hole in described ultra-high performance concrete precoated plate, a diameter of 5mm ~ 40mm of reserving hole, when installing precoated plate, hole is filled by cement based adhesive.
Further, described ultra-high performance concrete precoated plate interval arranges prepared screw-bolt hole, and bolt one end is welded on the other end on steel bridge deck, through the bolt hole of precoated plate, makes precoated plate be bolted together with steel bridge deck by installing nut.
Second technical scheme of the present invention is: comprise the following steps:
Step 1: girder steel and steel bridge deck construction: with the girder steel processing and fabricating of steel bridge deck, forms steel bridge panel structure while installing girder steel, and does anticorrosive coating at steel bridge deck end face；
Step 2: ultra-high performance concrete precoated plate makes: according to monolithic ultra-high performance concrete precoated plate size installation form, colligation precoated plate reinforcing bar, in precoated plate, the reinforcing bar of preparation stretches out at described precoated plate edge joint, pours into a mould ultra-high performance concrete, and carries out maintenance；
Step 3: install ultra-high performance concrete precoated plate: be laid on by cement based adhesive above steel bridge deck, strict control cement based adhesive thickness, the final precoated plate absolute altitude controlled after installing, and guarantee that precoated plate is in close contact with cement based adhesive, phenomenon of not coming to nothing；
Step 4: the cast-in-place belt construction of ultra-high performance concrete: weld shear connector in cast-in-place belt construction region, cast-in-place band reinforcing bar between colligation precoated plate, welding or colligation is used to carry out precoated plate and stretch out being connected with each other of reinforcing bar, ultra-high performance concrete is poured the cast-in-place belt construction region on steel bridge deck again, it is allowed to precoated plate and connects into one piece of overall ultra-high performance concrete layer, finally the ultra-high performance concrete of this cast-in-place band is carried out maintenance；
Step 5: floorings surface construction: the end face of described ultra-high performance concrete layer be roughened formation road surfaces or overlay wearing course above described ultra-high performance concrete layer, and wearing course is carried out maintenance, completing construction.
Compared with prior art, the method have the advantages that a kind of deck structrue combined by prefabricated ultra-high performance concrete plate and the construction method of the present invention with steel bridge deck, have that building height is little, rigidity big, the advantage such as adhesive property is good, good endurance, anti-fatigue performance are good, little, the suitable factorial construction of vehicular impact effect between each combination, especially have broad application prospects in the construction of steel bridge large-scale, super-huge.
Accompanying drawing explanation
Fig. 1 is assembled steel bridge panel organigram in prior art.
Fig. 2 is the structural section figure of the embodiment of the present invention one.
Fig. 3 is the structural plan figure of the embodiment of the present invention one.
Fig. 4 is the structural section figure of the embodiment of the present invention two.
Fig. 5 is the structural plan figure of the embodiment of the present invention three.
Fig. 6 is the structural section figure of the embodiment of the present invention four.
Fig. 7 is the structure partial detail drawing of the embodiment of the present invention four.
Labelling in figure: 1-steel bridge deck, 2-ultra-high performance concrete plate, 2-1 ultra-high performance concrete precoated plate, the cast-in-place band of 2-2 ultra-high performance concrete, 3-cement based adhesive, 4-bar-mat reinforcement, 5-peg, 6-reserving hole, 7-bolt hole, 8-bolt, 9-nut.
Detailed description of the invention
For the features described above of the present invention and advantage can be become apparent, special embodiment below, and coordinate accompanying drawing, it is described in detail below.
As shown in Fig. 2 ~ 7, a kind of by the deck structrue of prefabricated ultra-high performance concrete plate with steel bridge deck combination, the ultra-high performance concrete plate 2 on steel bridge deck including steel bridge deck 1 and covering, described ultra-high performance concrete plate 2 is prefabricated components, by reserved cast-in-place band 2-2 precoated plate 2-1 connected into monoblock type ultra-high performance concrete plate 2, then be connected with steel bridge deck 1 by cement based adhesive 3 and form combined bridge deck plate structure.
Wherein, the main material cement of described cement based adhesive 3 can be Portland cement, sulphate aluminium cement, alkali-excited cement, magnesium cement, or above complex cement.Described ultra-high performance concrete floorings 2 are to be poured by ultra-high performance concrete to form, described ultra-high performance concrete is RPC, very-high performance fibre reinforced concrete or slip casting fiber concrete, the fiber added in described ultra-high performance concrete layer includes steel fibre, glass fibre, synthetic fibers, carbon fiber, basalt fibre, and fiber content is 1% ~ 10%.Described steel bridge deck 1 is with longitudinal stiffener or the stiffener with transverse stiffener or having vertical, horizontal ribbed stiffener or the steel plate without ribbed stiffener simultaneously.New-old concrete seam shape between described ultra-high performance concrete precoated plate and cast-in-place band can make flush joint or rabbet-shaped seam or acute profile of tooth seam.Being provided with bar-mat reinforcement 4 in described ultra-high performance concrete precoated plate 2-1 and ultra-high performance concrete cast-in-place band 2-2, the bar-mat reinforcement 4 in described ultra-high performance concrete precoated plate 2-1 stretches out from described joint and band 2-2 cast-in-place with ultra-high performance concrete, the bar-mat reinforcement 4 of configuration is connected.
In the embodiment of the present invention one, as shown in Fig. 2 ~ 3, at the cast-in-place band 2-2 between described ultra-high performance concrete precoated plate, ultra-high performance concrete layer 2 is directly connected with steel bridge deck 1.
In the embodiment of the present invention two, as shown in Figure 4, difference with embodiment one is, at cast-in-place band 2-2 between described ultra-high performance concrete precoated plate, to with direction across bridge, peg 5 is set along along bridge by certain spacing, peg 5 welds with described steel bridge deck 1, and is positioned in described ultra-high performance concrete cast-in-place band 2-2.The switching performance before ultra-high performance concrete layer 2 and steel bridge deck 1 is further enhanced by arranging peg in cast-in-place band.
In the embodiment of the present invention three, as it is shown in figure 5, be with the difference of embodiment one, by certain spacing reserving hole 6 in described ultra-high performance concrete precoated plate 2-1, a diameter of 5mm ~ the 30mm of reserving hole, when installing precoated plate, reserving hole 6 is filled by cement based adhesive 3.Get rid of air and uneven cement based adhesive 3 by reserving hole 6, ultra-high performance concrete layer 2 can be made closely to be affixed with cement based adhesive 3, prevent phenomenon generation of coming to nothing.Or in reserving hole 6, it is welded with peg, strengthen precoated plate 2 shearing resistance effect.
In the embodiment of the present invention four, as shown in Fig. 6 ~ 7, difference with embodiment three is, by certain spacing prepared screw-bolt hole 7 in described ultra-high performance concrete precoated plate 2-1, bolt 8 one end is welded on steel bridge deck 1, and pass from the bolt hole 7 of precoated plate 2-1, make precoated plate be bolted together with steel bridge deck 1 by installing nut 9.
Especially, it should be noted that, the structure of embodiment three can be applied in a structure with the structure of embodiment two simultaneously, and the structure of embodiment four can also be applied in a structure with the structure of embodiment two simultaneously.
As shown in Fig. 2 ~ 7, a kind of by the construction method of prefabricated ultra-high performance concrete plate with the deck structrue of steel bridge deck combination, comprise the following steps:
(1) girder steel and steel bridge deck construction: with the girder steel processing and fabricating of steel bridge deck, form steel bridge panel structure while installing girder steel, and do anticorrosive coating at steel bridge deck end face；
(2) ultra-high performance concrete precoated plate makes: according to monolithic ultra-high performance concrete precoated plate size installation form, colligation precoated plate reinforcing bar, in precoated plate, the reinforcing bar of preparation stretches out at described precoated plate edge joint, pours into a mould ultra-high performance concrete, and carries out maintenance；
(3) ultra-high performance concrete precoated plate is installed: be laid on by cement based adhesive above steel bridge deck, strict control cement based adhesive thickness, the final precoated plate absolute altitude controlled after installing, and guarantee that precoated plate is in close contact with cement based adhesive, phenomenon of not coming to nothing；
(4) the cast-in-place belt construction of ultra-high performance concrete: in cast-in-place belt construction region weld stud, cast-in-place band reinforcing bar between colligation precoated plate, welding or colligation is used to carry out precoated plate and stretch out being connected with each other of reinforcing bar, ultra-high performance concrete is poured the cast-in-place belt construction region on steel bridge deck again, it is allowed to precoated plate and connects into one piece of overall ultra-high performance concrete layer, finally the ultra-high performance concrete of this cast-in-place band is carried out maintenance；
(5) floorings surface construction: the end face of described ultra-high performance concrete layer be roughened formation road surfaces or overlay wearing course above described ultra-high performance concrete layer, and wearing course is carried out maintenance, completing construction.
The present invention is not limited to above-mentioned preferred forms, and anyone can draw other various forms of steel bridge decks deck structrue combined with prefabricated ultra-high performance concrete plate and construction method under the enlightenment of the present invention.All impartial changes done according to scope of the present invention patent and modification, all should belong to the covering scope of the present invention.
Claims (9)
1. the construction method of the deck structrue combined with steel bridge deck by prefabricated ultra-high performance concrete plate, the described deck structrue by prefabricated ultra-high performance concrete plate with steel bridge deck combination includes steel bridge deck and covers the ultra-high performance concrete plate on steel bridge deck, described ultra-high performance concrete plate interval arranges and is provided with the cast-in-place band of ultra-high performance concrete between adjacent ultra-high performance concrete plate, being connected with steel bridge deck formation combined bridge deck plate structure through cement based adhesive bottom described ultra-high performance concrete plate, its construction comprises the following steps:
Step 1: girder steel and steel bridge deck construction: with the girder steel processing and fabricating of steel bridge deck, forms steel bridge panel structure while installing girder steel, and does anticorrosive coating at steel bridge deck end face；
Step 2: ultra-high performance concrete precoated plate makes: according to monolithic ultra-high performance concrete precoated plate size installation form, colligation precoated plate reinforcing bar, in precoated plate, the reinforcing bar of preparation stretches out at described precoated plate edge joint, pours into a mould ultra-high performance concrete, and carries out maintenance；
Step 3: install ultra-high performance concrete precoated plate: be laid on by cement based adhesive above steel bridge deck, strict control cement based adhesive thickness, the final precoated plate absolute altitude controlled after installing, and guarantee that precoated plate is in close contact with cement based adhesive, phenomenon of not coming to nothing；
Step 4: the cast-in-place belt construction of ultra-high performance concrete: weld shear connector in cast-in-place belt construction region, cast-in-place band reinforcing bar between colligation precoated plate, welding or colligation is used to carry out precoated plate and stretch out being connected with each other of reinforcing bar, ultra-high performance concrete is poured the cast-in-place belt construction region on steel bridge deck again, it is allowed to precoated plate and connects into one piece of overall ultra-high performance concrete layer, finally the ultra-high performance concrete of this cast-in-place band is carried out maintenance；
Step 5: floorings surface construction: the end face of described ultra-high performance concrete layer be roughened formation road surfaces or overlay wearing course above described ultra-high performance concrete layer, and wearing course is carried out maintenance, completing construction.
It is the most according to claim 1 a kind of by the construction method of prefabricated ultra-high performance concrete plate with the deck structrue of steel bridge deck combination, it is characterised in that: the main material cement in described cement based adhesive includes one or more in Portland cement, sulphate aluminium cement, alkali-excited cement, magnesium cement.
The most according to claim 1 a kind of by the construction method of prefabricated ultra-high performance concrete plate with the deck structrue of steel bridge deck combination, it is characterized in that: described ultra-high performance concrete floorings are to be poured by ultra-high performance concrete to form, described ultra-high performance concrete is RPC, very-high performance fibre reinforced concrete or slip casting fiber concrete, the fiber added in described ultra-high performance concrete layer includes steel fibre, glass fibre, synthetic fibers, carbon fiber, basalt fibre, and fiber content is 1%～10%.
It is the most according to claim 1 a kind of by the construction method of the deck structrue of prefabricated ultra-high performance concrete plate and steel bridge deck combination, it is characterised in that: described steel bridge deck is with longitudinal stiffener or the stiffener with transverse stiffener or having vertical, horizontal ribbed stiffener or the steel plate without ribbed stiffener simultaneously.
It is the most according to claim 1 a kind of by the construction method of the deck structrue of prefabricated ultra-high performance concrete plate and steel bridge deck combination, it is characterised in that: the seam shape between described ultra-high performance concrete precoated plate and cast-in-place band is flush joint or rabbet-shaped seam or acute profile of tooth seam.
The most according to claim 1 a kind of by the construction method of prefabricated ultra-high performance concrete plate with the deck structrue of steel bridge deck combination, it is characterized in that: be equipped with reinforcing bar in described ultra-high performance concrete precoated plate and the cast-in-place band of ultra-high performance concrete, the reinforcing bar in described ultra-high performance concrete precoated plate stretches out from ultra-high performance concrete precoated plate two ends and band cast-in-place with ultra-high performance concrete, the reinforcing bar of configuration is connected.
The most according to claim 1 a kind of by the construction method of prefabricated ultra-high performance concrete plate with the deck structrue of steel bridge deck combination, it is characterized in that: at the described cast-in-place band between ultra-high performance concrete precoated plate, it is provided with shear connector to direction across bridge spacing along along bridge, described shear connector welds with described steel bridge deck, and be positioned in the cast-in-place band of described ultra-high performance concrete, described shear connector is peg, or perforated panel, or channel-section steel, or steel loop.
The most according to claim 1 a kind of by the construction method of prefabricated ultra-high performance concrete plate with the deck structrue of steel bridge deck combination, it is characterized in that: by certain spacing reserving hole in described ultra-high performance concrete precoated plate, a diameter of 5mm ~ the 40mm of reserving hole, when installing precoated plate, hole is filled by cement based adhesive.
The most according to claim 1 a kind of by the construction method of prefabricated ultra-high performance concrete plate with the deck structrue of steel bridge deck combination, it is characterized in that: described ultra-high performance concrete precoated plate interval arranges prepared screw-bolt hole, bolt one end is welded on the other end on steel bridge deck, through the bolt hole of precoated plate, makes precoated plate be bolted together with steel bridge deck by installing nut.
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| CN113062202A (en) * | 2021-02-22 | 2021-07-02 | 山东鲁桥建设有限公司 | Steel-alkali-excited UHPC composite structure, prefabricated alkali-excited UHPC plate and connecting piece |
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