CN105113425A - Novel construction method for efficient fabricated steel-concrete composite beam - Google Patents

Novel construction method for efficient fabricated steel-concrete composite beam Download PDF

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CN105113425A
CN105113425A CN201510618402.2A CN201510618402A CN105113425A CN 105113425 A CN105113425 A CN 105113425A CN 201510618402 A CN201510618402 A CN 201510618402A CN 105113425 A CN105113425 A CN 105113425A
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bridge deck
steel
precast concrete
concrete
construction
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CN201510618402.2A
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CN105113425B (en
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张永涛
游新鹏
王敏
郑和晖
黄跃
巫兴发
陈少林
彭成明
黄灿
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中交第二航务工程局有限公司
中交公路长大桥建设国家工程研究中心有限公司
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Abstract

The invention discloses a novel construction method for an efficient fabricated steel-concrete composite beam, which belongs to the technical field of bridge construction. The method comprises the following steps of adopting a steel beam, whose top end is connected with a rubber sealing strip and a ribbed plate, as an assembling platform; laying a precast concrete bridge deck slab on the rubber sealing strip, wherein a channel is formed in the bottom end of the precast concrete bridge deck slab; and injecting a high-strength grouting material into a grouting channel, which is enclosed by the steel beam, the rubber sealing strip and the precast concrete bridge deck slab, so as to form the steel-concrete composite beam. According to the novel construction method for the efficient fabricated steel-concrete composite beam, disclosed by the invention, problems that the combining surface of the steel-concrete composite beams is corroded, concrete is cracked, the quality of post-poured concrete is hard to problem and so on due to machining a steel-concrete connecting piece and casting jointed concrete in place are effectively solved; the on-site working efficiency is increased while the construction quality is guaranteed; and the novel construction method is environment friendly and exerts good economic benefits.

Description

A kind of construction method of new and effective assembling steel reinforced concrete compound beam

Technical field

The present invention relates to a kind of construction method of novel steel reinforced concrete compound beam, belong to technical field of bridge construction, particularly relate to a kind of efficient assembling steel reinforced concrete compound beam construction method without the need to cast-in-place concrete.

Background technology

In bridge construction field, steel-concrete combined structure effectively can reduce own wt, improves span ability, range of application and having a extensive future.

In steel performance, usually adopt connector both combine figure as shown in Figure 1, Figure 2 with kind of the connector of three shown in Fig. 3: weldering nail connector, perforated plate connector are connected parts with shaped steel, and wherein weldering is followed closely connector and is most widely used.Combination construction in steel-concrete combined structure adopts rear flow welding to follow closely the mode (as shown in Figure 4 and Figure 5) of seam between preformed hole or piecemeal concrete slab usually, lift in advance above girder steel by prefabricated bridge, after by rear pouring concrete realize steel reinforced concrete combine.Practice shows, above-mentioned two kinds of combinations can bring the problem such as bonding surface burn into concrete cracking, the control of rear pouring concrete difficult quality, more crucially will increase cast-in-place operation, extends the site operation cycle.Current, one of prefabricated construction important development direction having become bridge construction field.For composite bridge, because girder steel and concrete slab can manufacture in factory respectively, girder steel can be used as platform and realizes in-site installation and without the need to building template, possess prefabricated construction condition.For this reason, a kind of Novel connection connection technology being conducive to the efficient assembling of steel-concrete combined structure of exploitation is badly in need of.

In Chinese utility model patent manual CN203129439U, disclose a kind of steel-concrete composite beam, it comprises, and comprises girder steel, concrete beam, open pore steel plate and with ribbingly runs through reinforcing bar; It is characterized in that: open pore steel plate is welded on the surface of steel beam flange; The web of girder steel has the circular hole corresponding with open pore steel plate; The reinforcing bar that runs through with ribbing passes from the center of circular hole open pore steel plate and steel beam web plate; Concrete beam is cast in the periphery of girder steel, wraps up described open pore steel plate, with ribbingly runs through reinforcing bar.Although this utility model improves the load assignment state of shear connector in steel-concrete composite beam, the stress distribution of steel-concrete composite beam, and the safety factor of steel-concrete composite beam can be improved, and easy construction, efficiency of construction are high, without the need to the construction equipment of complexity.But pouring concrete is built and is realized steel reinforced concrete combination, so this utility model exists the problems such as steel reinforced concrete bonding surface burn into concrete cracking, the control of rear pouring concrete difficult quality after this steel-concrete composite beam is remained and coordinated by flow welding nail preformed hole; The steel-concrete composite beam of this utility model is that employing is integrally formed simultaneously, and therefore this steel reinforced concrete compound beam is not easy to transport and installs.

In Chinese invention patent manual CN101831869A, disclose a kind of compound beam and concrete support beam connecting structure, it comprises girder steel, concrete bearing cross beam, and wherein, girder steel is interrupted at central bearing point place, is connected with concrete bearing cross beam; End plate is set in girder steel end, end plate is provided with perforated panel or welds nail connection girder steel and concrete bearing cross beam, with this transfer beams body shearing and moment of flexure; Be furnished with distributing bar in concrete bearing cross beam, form reinforcing cage together with main stress reinforcing bar; Concrete pier is arranged bearing support bottom concrete bearing cross beam.Although use the syndeton of this invention can make concrete shrinkage, the decking in the negative moment region tensile stress caused with the temperature difference of creeping reduce, there is power transmission simultaneously succinct, clear and definite, hogging moment area is without the need to Shi Hanzhang, eliminate bent cap, on-the-spot without the need to welding for steel structure, the advantage such as the installation position adjustable of bridge pier is good, but still there is the problems such as steel reinforced concrete bonding surface burn into concrete cracking, the control of rear pouring concrete difficult quality in this invention; And step is various when utilizing this invention assembly beam bridge, first erection is needed to complete girder steel, arrange the reinforcing bar of template and concrete bearing cross beam and bridge deck, first building span centre concrete builds near fulcrum and the concrete of joint portion again, installs permanent bearing, form removal, the frame that falls can form Steel concrete continuous composite beam bridge construction; It is long that this cover operation expends man-hour, and construction intensity is large.

A kind of novel steel-concrete combination beam is disclosed, it concrete slab comprising web, be connected to the bottom wing listrium bottom web and build in web top in Chinese invention patent manual CN101435249A; Build outside web and be enclosed with light aggregate concrete protection layer.Although this invention improves compound beam fire resistance, rigidity and resistance to overturning, but the steel-concrete composite beam preparation method of this invention is loaded down with trivial details, and still there is concrete and contact the problems such as the steel reinforced concrete bonding surface burn into concrete cracking caused with steel beam surface.

Summary of the invention

For the defect that above-mentioned prior art exists, the technical problem to be solved in the present invention is to provide kind of new and effective assembling steel reinforced concrete compound beam and manufactures construction method, it effectively can solve concrete and contact the problems such as the steel reinforced concrete bonding surface burn into concrete cracking caused with steel beam surface, effectively can improve work efficiency under the prerequisite ensureing construction quality simultaneously, and environmental protection more.

For solving the problems of the technologies described above, present invention employs a kind of like this construction method of new and effective assembling steel reinforced concrete compound beam, it is connected with the girder steel of rubber seal strip and floor for platform for lining with top, precast concrete bridge deck bottom being provided with conduit are taken and are placed in rubber seal strip, inject high-strength grout and form steel reinforced concrete compound beam in the grouting channel that girder steel, rubber seal strip, precast concrete bridge deck surround.

In a kind of preferred embodiment that the invention discloses, described precast concrete bridge deck comprise polylith precast concrete bridge deck sections; Connect in succession by epoxide-resin glue between described precast concrete bridge deck sections.

In a kind of preferred embodiment that the invention discloses, between described precast concrete bridge deck sections, be provided with multiple shear connector tooth.

In a kind of preferred embodiment that the invention discloses, above the conduit of described precast concrete bridge deck sections, be provided with the grouting mouth be communicated with conduit.

In a kind of preferred embodiment that the invention discloses, the top flange plate of described girder steel is connected with the floor along girder steel longitudinal extension; Described floor there are the decorative pattern that can improve floor surface roughness and multiple through hole.

In a kind of preferred embodiment that the invention discloses, the surface of described conduit is all by roughening process.

In a kind of preferred embodiment that the invention discloses, the method of the surface roughening process of described conduit comprises: (1) is coated with surface retarders on described conduit bed die, when concrete strength reaches 30% of design strength, remove reserved groove bed die; (2) use high pressure water washing cement paste, make surface expose stone, reach dabbing effect.

In a kind of preferred embodiment that the invention discloses, the special roughening template of employing during the surface roughening process of described conduit; Described roughening template comprises template and net; Described net is detachably fixed on described template surface; Described net is identical with the surface size of described template; The geometry of described grid forms closed indent geometry on the surface at described conduit interface.

In a kind of preferred embodiment that the invention discloses, its Specific construction step comprises: (1) manufacture of complete steel fine strain of millet in workshop, and on the top flange plate of steel fine strain of millet affixed decorative pattern perforate floor, simultaneously longitudinally paste compressible rubber seal strip in the both sides of the edge of the top flange plate of steel fine strain of millet along girder steel; (2) in precasting yard, build the precast concrete bridge deck sections of bottom with conduit, first build initial sections, and using this sections as matching segment, build next nodal section plate segment; (3) roughening processing is carried out to the conduit of each precast concrete bridge deck sections bottom; (4) the girder steel part in lifting appliance installation compound beam is utilized at the construction field (site), using girder steel as platform for lining, before precast concrete bridge deck sections is installed, lateral prestressing tendon and anchorage installation are put in place, then precast concrete bridge deck sections is installed successively, between each precast concrete bridge deck sections, is connected to form precast concrete bridge deck by epoxide-resin glue; (5), after each precast concrete bridge deck sections laying connection completes, precast concrete bridge deck, conduit, rubber seal strip and prefabricated girder steel surround the grouting channel of a sealing; (6) by the stock inlet on precast concrete bridge deck to pressure injection high-strength grout in grouting channel, last till that each pulp oral pore continuous stream goes out after cylindric slurries with rubber stopper shutoff plasma discharge hole; (7) transverse prestress in lateral prestressing tendon and ground tackle cable stay bridge panel is utilized.

In a kind of preferred embodiment that the invention discloses, the initial sections of described precast concrete bridge deck or last sections are provided with stock inlet; All the other sections of described concrete slab are provided with grout outlet.

The invention has the beneficial effects as follows: the present invention achieves the quick assembling construction of steel reinforced concrete compound beam by injecting high-strength grout in the grouting channel that surrounds at precast concrete bridge deck, rubber seal strip and prefabricated girder steel, these precast concrete bridge deck are prefabricated in factory in advance to be completed, so without the need to concrete cast-in-situ operation in bridge construction process, thus efficiently solve the problems such as steel reinforced concrete compound beam bonding surface burn into concrete cracking, the control of rear pouring concrete difficult quality; The present invention improves the assembling efficiency of construction of steel reinforced concrete compound beam effectively, reduce simultaneously construction consuming time, reduce construction intensity, avoid the series of problems that machined steel mixed connection fitting and cast in situs joint concrete bring, on-the-spot work efficiency is improved while guarantee construction quality, and more environmental protection, there is good economic benefit.

Accompanying drawing explanation

Fig. 1 is the weldering nail connecting-piece structure schematic diagram that in prior art, steel reinforced concrete compound beam adopts;

Fig. 2 is the perforated plate connector structural representation that in prior art, steel reinforced concrete compound beam adopts;

Fig. 3 is the structural steel connecting member structural representation that in prior art, steel reinforced concrete compound beam adopts;

Fig. 4 is the schematic diagram that after adopting in prior art, flow welding nail preformed hole mode realizes the assembling of steel reinforced concrete compound beam;

Fig. 5 adopts seam arrangements between piecemeal concrete slab to realize the schematic diagram of the assembling of steel reinforced concrete compound beam in prior art;

Fig. 6 is the structural representation of the construction method of a kind of new and effective assembling steel reinforced concrete compound beam of the embodiment of the present invention;

Fig. 7 is the structural representation of the Novel self-lock connector adopted in the construction method of a kind of new and effective assembling steel reinforced concrete compound beam of the embodiment of the present invention;

Fig. 8 is the structural representation adopting i-shape steel beam embodiment in the construction method of a kind of new and effective assembling steel reinforced concrete compound beam of the embodiment of the present invention;

Fig. 9 is the structural representation adopting grooved girder steel embodiment in the construction method of a kind of new and effective assembling steel reinforced concrete compound beam of the embodiment of the present invention;

Figure 10 is the grouting channel structural representation of the construction method of a kind of new and effective assembling steel reinforced concrete compound beam of the embodiment of the present invention;

Figure 11 is the structural representation being arranged on shear connector tooth between prefabricated bridge in the construction method of a kind of new and effective assembling steel reinforced concrete compound beam of the embodiment of the present invention;

Figure 12 is the grouting mouth position view of the construction method of a kind of new and effective assembling steel reinforced concrete compound beam of the embodiment of the present invention;

Figure 13 is the Novel self-lock connector operating principle schematic diagram be made up of high-strength encapsulating material in the construction method of a kind of new and effective assembling steel reinforced concrete compound beam of the embodiment of the present invention;

In figure: 1-precast concrete bridge deck, 2-girder steel, 3-floor, 4-conduit, 5-rubber seal strip, 6-grouting channel, the high-strength encapsulating material of 7-, 8-shear connector tooth, 9-is in the milk mouth, 1a-precast concrete bridge deck sections, 2a-top flange plate.

Detailed description of the invention

In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.

From the structural representation of the construction method of a kind of new and effective assembling steel reinforced concrete compound beam shown in Fig. 6 and Fig. 7, new and effective assembling steel reinforced concrete compound beam of the present invention comprises mixed precast concrete bridge deck 1 and girder steel 2; Precast concrete bridge deck 1 are installed on above girder steel 2; The top flange plate 2a of girder steel 2 is connected with the floor 3 along girder steel longitudinal extension; The bottom of precast concrete bridge deck 1 is provided with the conduit 4 along girder steel longitudinal extension, this conduit 4 is rectangular-shaped, and inwall is all by roughening process, the method for wherein conduit 4 interface roughness process comprises brushing medicament, hydraulic giant rinses dabbing, sandblasting etc.Several relatively more conventional way is: (1) surface retarders+giant rinses: on reserved groove bed die, be coated with surface retarders, when concrete strength reaches 30% of design strength, remove reserved groove bed die, timely high pressure water washing cement paste, make surface expose stone, reach dabbing effect.(2) reserved groove bed die adopts special roughening template, comprise template and net, net is detachably fixed on template surface, and net is identical with the surface size of template, and the geometry of grid forms closed indent geometry on the surface at reserved conduit interface; Floor 3 is positioned at conduit 4, and floor 3 is provided with multiple through hole, and the surface of floor 3 is processed with the decorative pattern that can improve floor surface roughness; The dual-side of top flange plate 2a is along the rubber seal strip 5 be connected with along girder steel longitudinal extension; The bottom surface of precast concrete bridge deck 1 is overlapped in described rubber seal strip 5, precast concrete bridge deck 1 realize compressing thus ensure that its sealing to rubber seal strip 5 by self gravitation, such as: certain steel reinforced concrete combined box beam employing shore hardness is high resiliency, high density, ageing-resistant, the etch-proof neoprene bar of 60.Rubber strip is compressed to 20mm by thick 35mm under the effect of prefabricated bridge weight, and compression ratio reaches 42.8%.The bottom surface of top flange plate 2a, rubber seal strip 5, precast concrete bridge deck 1 and conduit 4 four surround an inverted T-shape grouting channel 6 (as shown in Figure 10); High-strength encapsulating material 7 is filled with in grouting channel 6, high-strength encapsulating material 7 forms Novel self-lock connector, and this high-strength encapsulating material 7 is that a kind of cement based of early strong (1d>35MPa), good fluidity (divergence >550mm), compressive strength high (28d>80MPa) is dry mixed material.

In the present invention, it is prefabricated that precast concrete bridge deck 1 and girder steel 2 all can carry out standardization in processing factory, complete processing and the roughening process of precast concrete bridge deck 1 bottom channel 4 simultaneously, then transport the prefabricated precast concrete bridge deck 1 that complete and girder steel 2 to construction and installation on-site consolidation.Therefore precast concrete bridge deck 1 can pass through prefabricated polylith prefabricated bridge 1a, then precast concrete bridge deck 1 can be formed by glueing joint connection between precast concrete bridge deck sections 1a at the construction field (site), in order to improve the stability that precast concrete bridge deck sections 1a glueds joint, splicing face between precast concrete bridge deck sections 1a is provided with multiple shear connector tooth 8, as shown in figure 11.Only floor 3 need be inserted bridge deck conduit 4 during installation, realize steel reinforced concrete combination as shown in figure 12 by a kind of high-strength grout 7 of grouting mouth 9 pressure injection on precast concrete bridge deck sections 1a, whole installation period is without the need to concrete cast-in-situ operation.Above the conduit 4 of every block precast concrete bridge deck sections 1a, all arrange slurry mouth, wherein stock inlet is arranged in initial sections or last sections, and all the other sections all arrange grout outlet.In the present invention, the structure of girder steel 2 can adopt i-shape steel beam or grooved girder steel, as shown in Figure 8 and Figure 9.

A kind of Novel self-lock connector formed by injecting high-strength grout 7 in the grouting channel 6 of an inverted T-shape sealing that surrounds to the bottom surface of top flange plate 2a, rubber seal strip 5, precast concrete bridge deck 1 and conduit 4 four be the present invention in order to solve the key to the issues such as steel reinforced concrete compound beam bonding surface burn into concrete cracking, the control of rear pouring concrete difficult quality, the form of structure of this Novel self-lock connector is as shown in Figure 7.The operating principle of this Novel self-lock connector is as follows: different from traditional connectors, and this Novel self-lock connector relies on high-strength grout and bridge deck to reserve bonding between groove and steel plate interface, rub to meet longitudinal shear resistance and the vertical stressed demand such as drawing.Figure 13 is the operating principle of Novel self-lock connector opposing longitudinal shear, under longitudinal shear τ effect, steel reinforced concrete interface has the trend of slippage s simultaneously inevitable along with the protuberance separation u between different materials, and this separation u is limited by the normal stress σ that transverse prestress in bridge deck produces, separation trend is larger, and normal stress is also larger.From the mechanism of action, also this efficient type of attachment is fast referred to as self-lock connecting piece.

Use concrete mode of the present invention as follows:

(1) in factory, manufacture girder steel part, comprise the processing contents such as the decorative pattern to floor above girder steel, perforate;

(2) concreting bridge deck in precasting yard.First build initial sections, and using this sections as matching segment, build next bridge deck sections;

(3) sections bridge deck are prefabricated completes, and need carry out roughening process to conduit interface reserved below bridge deck, process means comprise brushing medicament, hydraulic giant rinses dabbing, sandblasting etc.;

(4) at assembled scene, by lifting appliance, the girder steel part in compound beam is installed;

(5) using girder steel as platform for lining, before bridge deck are installed, lateral prestressing tendon and anchorage installation are put in place, until after concrete slab installation and bridge location place be in the milk, jack pair lateral prestressing tendon can be utilized to carry out stretch-draw.Trifle section concrete bridge deck being installed successively, connecting by smearing epoxide-resin glue between sections; Before bridge deck are installed, need in advance at girder steel top board end face along both sides of the edge along bridge to the compressible rubber seal strip of elongated stickup to form the grouting channel between steel reinforced concrete; Prefabricated bridge utilizes own wt rubber strip should be compressed completely, to ensure the sealing of grouting channel;

(6) special high-strength grout is noted in in-passage pressure.First rinsing with pressure clear water before mud jacking will the duct of mud jacking, then be pressed into grouting material one end from stock inlet, from grout outlet discharge rear enclosed; Its concrete steps comprise: first, before grouting, adopt press-in air to carry out hole clearly to grouting channel, and check sealing rubber strip whether can bear grouting pressure; Then, should be mixed uniform according to product operation instruction by grouting material, its degree of mobilization should meet product instructions for use; Then, when being in the milk, grouting material being injected from stock inlet, lasting till that each pulp oral pore continuous stream uses rubber stopper shutoff plasma discharge hole after going out cylindric slurries; After completing grouting; reply compound beam more protection; avoid being subject to shock and vibration; and reach after prescribed strength can carry out subsequent construction until grouting material; it should be noted that in grouting operation process; if there is cannot the situation of pulp, cementing operations should be stopped immediately, ascertain the reason and fix a breakdown in time.

(7) transverse prestress in cable stay bridge panel.

In addition, by taking steel floor Surface Machining to become textured or directly perforate, bridge deck reserve groove and are set to the construction measures such as key flute profile, improve the adhesive property at high-strength grout and steel reinforced concrete interface further, more can meet force request.

The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, any those of ordinary skill in the art are in the technical scope disclosed by the present invention; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.

Claims (10)

1. the construction method of a new and effective assembling steel reinforced concrete compound beam, it is characterized in that: be connected with the girder steel (2) of rubber seal strip (5) and floor (3) for platform for lining with top, the precast concrete bridge deck (1) bottom being provided with conduit (4) are taken and are placed in rubber seal strip (5), inject high-strength grout (7) and form steel reinforced concrete compound beam in the grouting channel (6) that girder steel (2), rubber seal strip (5), precast concrete bridge deck (1) surround.
2. the construction method of a kind of new and effective assembling steel reinforced concrete compound beam as claimed in claim 1, is characterized in that: described precast concrete bridge deck (1) comprise polylith precast concrete bridge deck sections (1a); Connect in succession by epoxide-resin glue between described precast concrete bridge deck sections (1a).
3. a kind of new and effective assembling steel reinforced concrete compound beam as claimed in claim 2, is characterized in that: be provided with multiple shear connector tooth (8) between described precast concrete bridge deck sections (1a).
4. a kind of new and effective assembling steel reinforced concrete compound beam as claimed in claim 2, is characterized in that: conduit (4) top of described precast concrete bridge deck sections (1a) is provided with the grouting mouth (9) be communicated with conduit (4).
5. the construction method of a kind of new and effective assembling steel reinforced concrete compound beam as claimed in claim 1, is characterized in that: the top flange plate (2a) of described girder steel (2) is connected with the floor (3) along girder steel longitudinal extension; Described floor (3) there are the decorative pattern that can improve floor surface roughness and multiple through hole.
6. the construction method of a kind of new and effective assembling steel reinforced concrete compound beam as claimed in claim 1, is characterized in that: the surface of described conduit (4) is all by roughening process.
7. the construction method of a kind of new and effective assembling steel reinforced concrete compound beam as claimed in claim 6, is characterized in that: the method for the surface roughening process of described conduit (4) comprising:
(1) on described conduit (4) bed die, be coated with surface retarders, when concrete strength reaches 30% of design strength, remove reserved groove bed die;
(2) use high pressure water washing cement paste, make surface expose stone, reach dabbing effect.
8. the construction method of a kind of new and effective assembling steel reinforced concrete compound beam as claimed in claim 6, is characterized in that: the special roughening template of employing during the surface roughening process of described conduit (4); Described roughening template comprises template and net; Described net is detachably fixed on described template surface; Described net is identical with the surface size of described template; The geometry of described grid forms closed indent geometry on the surface at described conduit (4) interface.
9. the manufacture construction method of a kind of new and effective assembling steel reinforced concrete compound beam as claimed in claim 1, is characterized in that: its Specific construction step comprises:
(1) manufacture of complete steel fine strain of millet in workshop, and on the top flange plate of steel fine strain of millet affixed decorative pattern perforate floor, longitudinally paste compressible rubber seal strip in the both sides of the edge of the top flange plate of steel fine strain of millet along girder steel simultaneously;
(2) in precasting yard, build the precast concrete bridge deck sections of bottom with conduit, first build initial sections, and using this sections as matching segment, build next nodal section plate segment;
(3) roughening processing is carried out to the conduit of each precast concrete bridge deck sections bottom;
(4) the girder steel part in lifting appliance installation compound beam is utilized at the construction field (site), using girder steel as platform for lining, before precast concrete bridge deck sections is installed, lateral prestressing tendon and anchorage installation are put in place, then precast concrete bridge deck sections is installed successively, between each precast concrete bridge deck sections, is connected to form precast concrete bridge deck by epoxide-resin glue;
(5), after each precast concrete bridge deck sections laying connection completes, precast concrete bridge deck, conduit, rubber seal strip and prefabricated girder steel surround the grouting channel of a sealing;
(6) by the stock inlet on precast concrete bridge deck to pressure injection high-strength grout in grouting channel, last till that each pulp oral pore continuous stream goes out after cylindric slurries with rubber stopper shutoff plasma discharge hole;
(7) transverse prestress in lateral prestressing tendon and ground tackle cable stay bridge panel is utilized.
10. the manufacture construction method of a kind of new and effective assembling steel reinforced concrete compound beam as claimed in claim 9, is characterized in that: the initial sections of described precast concrete bridge deck or last sections are provided with stock inlet; All the other sections of described concrete slab are provided with grout outlet.
CN201510618402.2A 2015-09-24 2015-09-24 A kind of construction method of efficiently assembled steel reinforced concrete combination beam CN105113425B (en)

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CN106120532A (en) * 2016-07-26 2016-11-16 宁波金蛟龙重工钢构有限公司 A kind of novel prefabricated assembled steel concrete composite beam bridge superstructure and processing technology thereof
CN106149546A (en) * 2016-08-04 2016-11-23 浙江工业大学 Steel rubber concrete combined bridge beam slab
CN106284047A (en) * 2016-08-04 2017-01-04 浙江工业大学 Steel concrete combined bridge beam slab
CN106835930A (en) * 2017-04-10 2017-06-13 广州大学 A kind of bolt connecting type steel concrete combination beam
CN108385522A (en) * 2018-01-17 2018-08-10 中交第二航务工程局有限公司 Prefabrication and assembly construction UHPC combination beams and rapid constructing method
CN110528702A (en) * 2019-09-10 2019-12-03 中铁隧道局集团有限公司 A kind of construction method for steel reinforced concrete bondbeam thin layer epoxy construction glue sticking

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