CN209114299U - A kind of Single-box multi-chamber box beam bridge - Google Patents

A kind of Single-box multi-chamber box beam bridge Download PDF

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Publication number
CN209114299U
CN209114299U CN201821455124.9U CN201821455124U CN209114299U CN 209114299 U CN209114299 U CN 209114299U CN 201821455124 U CN201821455124 U CN 201821455124U CN 209114299 U CN209114299 U CN 209114299U
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prefabricated
box
bridge
longitudinal
bar
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孙全利
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Guangzhou Urban Planning Survey and Design Institute
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Guangzhou Urban Planning Survey and Design Institute
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Abstract

The utility model provides a kind of Single-box multi-chamber box beam bridge, including substructure, Single-box multi-chamber box girder, bridge floor in-situ layer, lateral prestressing tendon, first longitudinal direction prestressed strand and second longitudinal direction prestressed strand, Single-box multi-chamber box girder includes the prefabricated central sill of two prefabricated side bars and multiple interconnections between two prefabricated side bars, and the prefabricated side bar and prefabricated central sill of structural I-beam can reduce in lifting construction the construction cost for the requirement of lifting appliance and reducing Single-box multi-chamber box beam bridge;First longitudinal direction prestressed strand and second longitudinal direction prestressed strand improve the middle part of prefabricated side bar and prefabricated central sill and the stress of lower part respectively;Prefabricated side bar and prefabricated central sill are prefabricated component, have the characteristics that high concrete quality, appearance looks elegant and lighter in weight;First lateral prestressing tendon and the second lateral prestressing tendon can effectively reinforce the lateral ties between lateral ties and adjacent prefabricated central sill between prefabricated side bar and prefabricated central sill.

Description

A kind of Single-box multi-chamber box beam bridge
Technical field
The utility model relates to construction engineering field more particularly to a kind of Single-box multi-chamber box beam bridges.
Background technique
For box-beam structure because its vision is succinct, deck-molding is shorter than other pattern bridges, has centainly excellent in bridge construction Gesture, therefore, box girder bridge is using relatively broad in highway bridge, municipal bridge and railroad bridge construction, and box beam is main in the prior art Divide prefabricated case beam and cast-in-situ box girder, prefabricated case beam is prefabricated in independent place and combines Bridge Erector or hanging device complete in lower part engineering It is set up after, prefabricated case beam is mostly the small box girder structure of single box single chamber;Cast-in-situ box girder is the assembling reinforcement of engineering site formwork erection And casting concrete, single box single chamber box beam can be used, Single-box multi-chamber box girder pattern also can be used.But in existing structure technology, There is the shortcomings that different aspect, limitation or shortcoming in prefabricated case beam structure and cast-in-situ box girder structure, specific manifestation is such as Under:
A, prefabricated case beam:
(1) because the construction process requirement of prefabricated case beam is higher and is silent section structure, web and bottom wing listrium it is mixed Solidifying soil pouring quality is difficult to ensure, when management is not in place with Construction control, longitudinal crack or the honeycomb fiber crops along steel beam easily occurs Face.
(2) space is narrow in prefabricated small box girder, and concrete once-cast and internal model remove relatively cumbersome, coagulation in case Soil property amount is not easy to examine.
(3) for the cored slab, T beam of relatively same across footpath, prefabricated small box girder lifts that weight is larger, pre- such as 40m across footpath Small box girder processed lifts about 170 tons of weight.
B, cast-in-situ box girder structure:
(1) due to being influenced by the space steel Shu Zhangla and single-ended permission tensioning length, to cast-in-place prestressed armored concrete For Continuous Box Girder Bridge, steel Shu Zhangla and section construction problem are relatively difficult to resolve certainly, and annoying bridge worker always.
(2) full framing need to be set up when construction of cast-in-situ box-beam, bracket has river course flood unfavorable when bridge crosses over creek It influences;Status traffic is had certain limitations when bridge crosses over road, especially in municipal works, Full space support construction is to friendship Logical influence is bigger.
(3) construction of cast-in-situ box-beam, need to be after the completion of pre-pressing bracket, live formwork erection assembling reinforcement and casting concrete, and needs Want certain curing period that can carry out prestressed stretch-draw, the duration is longer than precast beam, in the engineering of duration anxiety, construction Scheme limits project progress.
Utility model content
Based on this, the purpose of this utility model is to provide a kind of Single-box multi-chamber box beam bridges, a kind of high-quality, strong to provide Spend height, convenient for assembling and Single-box multi-chamber box beam bridge easy for construction.
A kind of the technical solution of the utility model are as follows: Single-box multi-chamber box beam bridge comprising substructure, Single-box multi-chamber box girder With bridge floor in-situ layer, the Single-box multi-chamber box girder is connect by permanent support with the top of the substructure;
The Single-box multi-chamber box girder include two prefabricated side bars and it is multiple be located at it is mutual between two prefabricated side bars The prefabricated central sill of connection, by transverse connection structure connection between the adjacent prefabricated central sill, each prefabricated side bar The one end for the prefabricated central sill that one end is adjacent to respectively is connected by the transverse connection structure;
The prefabricated side bar and the prefabricated central sill are structural I-beam, and the middle part and bottom of the prefabricated side bar are along longitudinal direction The both ends in direction are connected separately with first longitudinal direction prestressed strand, the middle part and bottom of the prefabricated central sill along the longitudinal direction two End is connected separately with second longitudinal direction prestressed strand, the both ends of the top and bottom of the Single-box multi-chamber box girder in transverse direction point It is not connected with the first lateral prestressing tendon and the second lateral prestressing tendon.
Optionally, the prefabricated side bar forms I-beam knot by the first top flange plate, the first bottom wing listrium and the first web Structure, the top and bottom end of first web are connect with first top flange plate and the first bottom wing listrium respectively, described The both ends of first bottom wing listrium and first web along the longitudinal direction are equipped with first longitudinal direction prestressed strand;
The prefabricated central sill forms structural I-beam by the second top flange plate, the second bottom wing listrium and the second web, described The top and bottom end of second web are connect with second top flange plate and the second bottom wing listrium respectively, second bottom wing The both ends of listrium and second web along the longitudinal direction are equipped with second longitudinal direction prestressed strand;
The both ends of first top flange plate and second top flange plate in transverse direction are equipped with the first transverse prestress Steel beam, the both ends of the first bottom wing listrium and the second bottom wing listrium in transverse direction are equipped with the second transverse prestress steel Beam.
Optionally, when bridge is the wide bridge of straight line, first top flange plate along the longitudinal direction on width be set as It is wide, the first bottom wing listrium along the longitudinal direction on width be set as wide;
Second top flange plate along the longitudinal direction on width be set as wide, the second bottom wing listrium is along the longitudinal direction On width be set as wide.
Optionally, when bridge be broaden bridge when, second top flange plate along the longitudinal direction on width be set as broadening, The second bottom wing listrium along the longitudinal direction on width be set as broadening.
Optionally, when the bridge is the curve bridge with certain curvature radius, outside first top flange plate Side wing edge is arc line shaped.
Optionally, the first bottom wing listrium includes first end and the second end that is oppositely arranged with the first end, described First end is in the shape of a hoof.
Optionally, the first end extends outwardly 20~50cm.
Optionally, the transverse connection structure be wet seam, first top flange plate and with first top flange plate Adjacent second top flange plate is connected by the wet seam, the first bottom wing listrium and with the first bottom wing listrium Adjacent the second bottom wing listrium is connected by the wet seam, by described wet between adjacent second top flange plate Seam connects, and passes through the wet seam between adjacent the second bottom wing listrium and connects.
In order to reach identical purpose, the utility model also provides a kind of construction method of Single-box multi-chamber box beam bridge,
When Bridge Design is multi-span girder bridge, comprising the following steps:
S1, the construction of pile foundation, cushion cap, bridge pier and bent cap is carried out in engineering ground, while carried out in precasting yard described pre- The production of side bar processed and prefabricated central sill;
S2, multiple temporary supports corresponding with the prefabricated side bar and the prefabricated central sill are installed on bent cap, and Temporary support is installed in the two sides of the temporary support;
S3, the prefabricated side bar and the prefabricated central sill are lifted to the temporary support and the temporary support;
S4, the construction transverse connection structure, and at the same time the installation permanent support;
S5, first lateral prestressing tendon penetrate first top flange plate and the second bottom wing listrium, described Second lateral prestressing tendon penetrates the first bottom wing listrium and the second bottom wing listrium, and laterally pre- to described first Stress steel beam and second lateral prestressing tendon carry out tensioning, then remove the temporary support;
S6, the casting cast-in-place layer concrete of bridge floor, to be formed in the prefabricated side bar and the prefabricated central sill top described Bridge floor in-situ layer;
S7, the temporary support is removed;
S8, construction deck paving and affiliated facility;
S9, operation are open to traffic;
When Bridge Design is beam structure, comprising the following steps:
S1, the construction of pile foundation, cushion cap, bridge pier and bent cap is carried out in engineering ground, while carried out in precasting yard described pre- The production of side bar processed and prefabricated central sill, wherein install hogging moment wave in first top flange plate and second top flange plate Line pipe;
S2, multiple temporary supports corresponding with the prefabricated side bar and the prefabricated central sill are installed on bent cap, and Temporary support is installed in the two sides of temporary support;
S3, the prefabricated side bar and the prefabricated central sill are lifted to the temporary support and the temporary support;
S4, the construction transverse connection structure, and at the same time the installation permanent support;
S5, first lateral prestressing tendon penetrate first top flange plate and the second bottom wing listrium, described Second lateral prestressing tendon penetrates the first bottom wing listrium and the second bottom wing listrium, and laterally pre- to described first Stress steel beam and second lateral prestressing tendon carry out tensioning, then remove the temporary support;
The cast-in-place continuous section concrete of pier top of S6, casting adjacent two across between, to complete system transform;
S7, hogging moment steel beam is penetrated in the hogging moment bellows, and to the hogging moment steel Shu Jinhang tensioning;
S8, the casting cast-in-place layer concrete of bridge floor, to be formed in the prefabricated side bar and the prefabricated central sill top described Bridge floor in-situ layer;
S9, the temporary support is removed;
S10, construction deck paving and affiliated facility;
S101, operation are open to traffic.
Optionally, when Bridge Design is multi-span girder bridge, in the step S1, comprising the following steps:
S11, bridge structural calculation analysis is carried out according to design parameters such as span of bridge, class of loading and bridge widths, really The structure size of fixed each Single-box multi-chamber box girder, and then determine the structure size of prefabricated central sill and prefabricated side bar, and really The arrangement of the fixed prestressed strand;
S12, construction precasting yard and pedestal;
S13, the installation and laying that the prefabricated side bar bed die and the prefabricated middle beam bottom board are carried out on the pedestal;
S14, binding forms the prefabricated side bar respectively on the prefabricated side bar bed die and the prefabricated middle beam bottom board The framework of steel reinforcement of framework of steel reinforcement and the prefabricated central sill, and the framework of steel reinforcement that forms the prefabricated side bar and it is described it is prefabricated in Pre-buried transverse connection structure in the framework of steel reinforcement of beam;
S15, longitudinal wave is installed in the framework of steel reinforcement of the framework of steel reinforcement and the prefabricated central sill that form the prefabricated side bar Line pipe and transverse wave pipe, wherein the first transverse wave pipe is installed in the framework of steel reinforcement of the prefabricated side bar, described prefabricated Second transverse wave pipe is installed in the framework of steel reinforcement of central sill;
S16, prefabricated side bar side form, prefabricated side bar end mould, prefabricated middle beam side and prefabricated central sill are carried out on the pedestal Hold the installation of mould;
S17, first formed to the prefabricated side bar side form, the prefabricated side bar end mould and the prefabricated side bar bed die are poured Concrete is poured in framework of steel reinforcement in note slot;To the prefabricated middle beam side, the prefabricated middle beam-ends mould and it is described it is prefabricated in Concrete is poured in the framework of steel reinforcement in the second pouring basin that beam bottom board is formed;Finally check each transverse connection structure Position;
The prefabricated side bar and the prefabricated central sill after S18, casting complete are conserved, after curing time is greater than 7 days, And the intensity and elastic model of the concrete of the concrete and prefabricated central sill of the composition prefabricated side bar reach design value After 85%, the prefabricated side bar side form, the prefabricated side bar end mould, the prefabricated middle beam side and the prefabricated middle beam-ends are removed Mould;
S19, the first longitudinal direction prestressed strand is penetrated to the longitudinal corrugated pipe set on the prefabricated side bar, by described Two longitudinal prestressing steel beams penetrate the longitudinal corrugated pipe of the prefabricated central sill, to the first longitudinal direction prestressed strand and described After the completion of two longitudinal prestressing steel beam lashings, to the first longitudinal direction prestressed strand and the second longitudinal direction prestressed strand into Row tensioning;
S110, hole path pressure grouting and sealing off and covering anchorage maintenance are carried out;
When Bridge Design is continuous bridge, in the step S1, comprising the following steps:
S11, bridge structural calculation analysis is carried out according to design parameters such as span of bridge, class of loading and bridge widths, really The structure size of fixed each Single-box multi-chamber box girder, and then determine the structure size of prefabricated central sill and prefabricated side bar, and really The arrangement of the fixed prestressed strand;
S12, construction precasting yard and pedestal;
S13, the installation and laying that the prefabricated side bar bed die and the prefabricated middle beam bottom board are carried out on the pedestal;
S14, binding forms the prefabricated side bar respectively on the prefabricated side bar bed die and the prefabricated middle beam bottom board The framework of steel reinforcement of framework of steel reinforcement and the prefabricated central sill, and the framework of steel reinforcement that forms the prefabricated side bar and it is described it is prefabricated in Pre-buried transverse connection structure in the framework of steel reinforcement of beam;
S15, the framework of steel reinforcement installation longitudinal ripple in the framework of steel reinforcement and the prefabricated central sill for forming the prefabricated side bar Pipe, transverse wave pipe and hogging moment steel beam bellows, wherein the first lateral wave is installed in the framework of steel reinforcement of the prefabricated side bar Line pipe installs the second transverse wave pipe in the framework of steel reinforcement of the prefabricated central sill;
S16, the prefabricated side bar side form, the prefabricated side bar end mould, the prefabricated central sill side are carried out on the pedestal The installation of mould and the prefabricated middle beam-ends mould;
S17, first formed to the prefabricated side bar side form, the prefabricated side bar end mould and the prefabricated side bar bed die are poured Concrete is poured in framework of steel reinforcement in note slot;To the prefabricated middle beam side, the prefabricated middle beam-ends mould and it is described it is prefabricated in Concrete is poured in the framework of steel reinforcement in the second pouring basin that beam bottom board is formed;Finally check each transverse connection structure Position;
The prefabricated side bar and the prefabricated central sill after S18, casting complete are conserved, and curing time is greater than 7 days Afterwards, and the intensity of the concrete of the concrete of the composition prefabricated side bar and the prefabricated central sill and elastic model reach design value 85% after, remove the prefabricated side bar side form, the prefabricated side bar end mould, the prefabricated middle beam side and the prefabricated central sill Hold mould;
S19, the longitudinal corrugated pipe that the first longitudinal direction prestressed strand is penetrated to the prefabricated side bar, described second is indulged The longitudinal corrugated pipe that the prefabricated central sill is penetrated to prestressed strand is indulged to the first longitudinal direction prestressed strand and described second To after the completion of prestressed strand lashing, the first longitudinal direction prestressed strand and the second longitudinal direction prestressed strand are opened It draws;
S110, hole path pressure grouting and sealing off and covering anchorage maintenance are carried out.
Implement the utility model embodiment, has the following beneficial effects:
The Single-box multi-chamber box beam bridge of the utility model, has the advantages that
(1) Single-box multi-chamber box girder of the utility model includes the prefabricated central sill of two prefabricated side bars and multiple interconnections, Prefabricated side bar and prefabricated central sill are prefabricated component, have the characteristics that high concrete quality, appearance looks elegant and lighter in weight, more in single case In the work progress of chamber beam and bridge pier, entire work progress has the characteristics that environmental protection;
(2) the prefabricated side bar of the utility model and prefabricated central sill are structural I-beam, to prefabricated side bar and prefabricated central sill Manufacturing process in, do not have to install and remove internal model, entire prefabrication process has mixed after casting complete convenient for constructing and examining The characteristics of coagulating the quality of soil;
(3) the prefabricated side bar of the utility model and prefabricated central sill are structural I-beam, compared to same across footpath and deck-siding In prefabricated component, the weight of prefabricated side bar and prefabricated central sill is lighter, to reduce in lifting construction to the requirement of lifting appliance and drop The low construction cost of Single-box multi-chamber box beam bridge;
(4) the first longitudinal direction prestressed strand of the utility model can apply longitudinal pressure to prefabricated side bar, to effectively change It is apt to the middle part of prefabricated side bar and the stress of lower part, second longitudinal direction prestressed strand can apply longitudinal pressure to prefabricated central sill, To be effectively improved the middle part of prefabricated central sill and the stress of lower part;
(5) first lateral prestressing tendon of the utility model and the second lateral prestressing tendon can not only effectively be reinforced pre- The lateral ties between lateral ties and adjacent prefabricated central sill between side bar processed and prefabricated central sill, and can effectively improve pre- The stress of the outer rim of side bar processed.
The construction method of the Single-box multi-chamber box beam bridge of the utility model, has a characteristic that
(1) construction method that the Single-box multi-chamber box beam bridge of the utility model uses for prefabrication and lifting construction, prefabricated side bar and Prefabricated central sill is first made in precasting yard, and prefabricated side bar and prefabricated central sill are using standardization, batch production and rapid High-volume mode carry out production and construction, therefore, the construction method of the utility model can not only accelerate construction progress, but also keep away Exempt from the installation and removal of extensive full framing and template, moreover, construction environment can be improved well, reduces to applying The influence of work scene surrounding enviroment has good economic results in society;
(2) it is multispan simply supported beam that the construction method of the Single-box multi-chamber box beam bridge of the utility model, which is applicable not only to bridge structure, Structure, but also being suitable for bridge structure is beam structure, has the characteristics that use scope is wide;
(3) construction method of the Single-box multi-chamber box beam bridge of the utility model can ensure that the stabilization of Single-box multi-chamber box beam bridge installation Property, safety and convenience, so as to further ensure that being installed in place for entire Single-box multi-chamber box beam bridge structure, and method is simple It is feasible, there is good promotional value.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the Single-box multi-chamber box beam bridge of the utility model.
Fig. 2 is the structural schematic diagram of the prefabricated side bar of the utility model.
Fig. 3 is the structural schematic diagram of the prefabricated central sill of the utility model.
Fig. 4 is the structural schematic diagram of the Single-box multi-chamber box girder of the utility model.
Fig. 5 is section structure diagram of the Single-box multi-chamber box girder of the utility model at span centre.
Fig. 6 is that the bridge structure of the utility model is Single-box multi-chamber box girder the breaking at pier top in the case of beam structure Face structural schematic diagram.
Fig. 7 is Single-box multi-chamber box girder corresponding to the Single-box multi-chamber box girder bridge construction method and step S1~S3 of the utility model The structural schematic diagram of bridge.
Fig. 8 is the construction method step that the bridge of the utility model is the Single-box multi-chamber box beam bridge in the case of beam structure The structural schematic diagram of Single-box multi-chamber box beam bridge corresponding to S1~S6.
Fig. 9 is the construction method step that the bridge of the utility model is the Single-box multi-chamber box beam bridge in the case of beam structure The structural schematic diagram of Single-box multi-chamber box beam bridge corresponding to S1~S10.
Figure 10 is the construction party that the bridge structure of the utility model is the Single-box multi-chamber box beam bridge under multispan simple beam case Method block diagram.
Figure 11 is the construction method step that the bridge structure of the utility model is the Single-box multi-chamber box beam bridge in the case of continuous beam Rapid figure.
Figure 12 is that the bridge structure of the utility model is that prefabricated side bar and prefabricated central sill under multispan simple beam case is applied Work method and step figure.
Figure 13 be the utility model bridge structure be continuous beam in the case of prefabricated side bar and prefabricated central sill construction party Method block diagram.
Description of symbols:
1, pile foundation;2, cushion cap;3, bridge pier;4, Single-box multi-chamber box girder;41, prefabricated side bar;411, the first top flange plate;412, First web;413, the first bottom wing listrium;4131, first end;4132, second end;42, prefabricated central sill;421, the second top flange Plate;422, the second web;423, the second bottom wing listrium;43, transverse connection structure;44, first longitudinal direction prestressed strand;45, Two longitudinal prestressing steel beams;46, the first lateral prestressing tendon;47, the second lateral prestressing tendon;5, bridge floor in-situ layer;6, Temporary support;7, permanent support;8, hogging moment steel beam;9, cast-in-place continuous segment.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts Every other embodiment obtained, fall within the protection scope of the utility model.
In the description of the present invention, it should be understood that term " on ", "lower", "left", "right", "top", "bottom" etc. The orientation or positional relationship of instruction is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description the utility model It is described with simplifying, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific orientation structure It makes and operates, therefore should not be understood as limiting the present invention.
As shown in figure 1-9, a kind of Single-box multi-chamber box beam bridge provided by the utility model embodiment comprising lower junction Structure, multiple Single-box multi-chamber box girders 4 and bridge floor in-situ layer 5, substructure include pile foundation 1, cushion cap 2, bridge pier 3, bent cap, pile foundation 1 with The bottom end of cushion cap 2 connects, and the top of cushion cap 2 is connect with the bottom end of bridge pier 3, and the top of bridge pier 3 and the bottom end of bent cap connect, single case Multi cell box girder 4 is connect by permanent support 7 with the top of bent cap;
Single-box multi-chamber box girder 4 includes two prefabricated side bars 41 and multiple interconnections being located between two prefabricated side bars 41 Prefabricated central sill 42, connected by transverse connection structure 43 between adjacent prefabricated central sill 42, one end of each prefabricated side bar 41 The one end for the prefabricated central sill 42 being adjacent to respectively is connected by transverse connection structure;
Prefabricated side bar 41 and prefabricated central sill 42 be structural I-beam, and the middle part and bottom of prefabricated side bar 41 are along the longitudinal direction Both ends are connected with first longitudinal direction prestressed strand 44, and the both ends of the middle part and bottom of prefabricated central sill 42 along the longitudinal direction are connected with Two longitudinal prestressing steel beams 45, the both ends of the top and bottom of Single-box multi-chamber box girder 4 in transverse direction are connected separately with the first cross To prestressed strand 46 and the second lateral prestressing tendon 47.
Based on above-mentioned setting, the Single-box multi-chamber box beam bridge of the utility model is had the advantages that
(1) Single-box multi-chamber box girder 4 of the utility model include two prefabricated side bars 41 and multiple interconnections it is prefabricated in Beam 42, prefabricated side bar 41 and prefabricated central sill 42 are prefabricated component, high, appearance looks elegant and lighter in weight the spy with concrete quality Point, in the work progress of Single-box multi-chamber box girder 4 and bridge pier 3, entire work progress has the characteristics that environmental protection;
(2) the prefabricated side bar 41 of the utility model and prefabricated central sill 42 are structural I-beam, to prefabricated side bar 41 and in advance In the manufacturing process of central sill 42 processed, do not have to install and remove internal model, entire prefabrication process has to be poured convenient for construction and inspection The characteristics of quality of concrete after;
(3) the prefabricated side bar 41 of the utility model and prefabricated central sill 42 are structural I-beam, compared to same across footpath and beam In wide prefabricated component, the weight of prefabricated side bar 41 and prefabricated central sill 42 is lighter, to reduce in lifting construction to lifting appliance It is required that and reducing the construction cost of Single-box multi-chamber box beam bridge;
(4) the first longitudinal direction prestressed strand 44 of the utility model can apply longitudinal pressure to prefabricated side bar 41, to have Effect improves the middle part of prefabricated side bar 41 and the stress of lower part, and second longitudinal direction prestressed strand 45 can apply prefabricated central sill 42 Add longitudinal pressure, to be effectively improved the middle part of prefabricated central sill 42 and the stress of lower part;
(5) first lateral prestressing tendon 46 of the utility model and the second lateral prestressing tendon 47 can not only effectively add The lateral ties between lateral ties and adjacent prefabricated central sill 42 between strong prefabricated side bar 41 and prefabricated central sill 42, Er Qieneng It is effectively improved the stress of the outer rim of prefabricated side bar 41.
In the present embodiment, as shown in figure 1-9, in order to further improve the middle part of prefabricated side bar 41 and the stress shape of lower part The stress at the middle part and lower part of state and prefabricated central sill 42, prefabricated side bar 41 is by the first top flange plate 411, the first bottom wing listrium 413 and first web 412 form structural I-beam, the top and bottom end of the first web 412 respectively with the first top flange plate 411 and The connection of first bottom wing listrium 413, and the first bottom wing listrium 413 and the first web 412 are equipped with along the longitudinal direction for connecting first The first longitudinal direction bellows of longitudinal prestressing steel beam 44, first longitudinal direction prestressed strand 44 are inserted into first longitudinal direction bellows, from And the both ends of the first bottom wing listrium 413 and the first web 412 along the longitudinal direction are equipped with first longitudinal direction prestressed strand 44;
Prefabricated central sill 42 forms I-beam knot by the second top flange plate 421, the second bottom wing listrium 423 and the second web 422 Structure, the top and bottom end of the second web 422 are connect with the second top flange plate 421 and the second bottom wing listrium 423 respectively, the second bottom wing Listrium 423 and the second web 422 are equipped with the second longitudinal direction wave for connecting second longitudinal direction prestressed strand 45 along the longitudinal direction Line pipe, second longitudinal direction prestressed strand 45 is inserted into second longitudinal direction bellows, thus the second bottom wing listrium 423 and the second web 422 both ends along the longitudinal direction are equipped with second longitudinal direction prestressed strand 45;
The both ends of first top flange plate 411 and the second top flange plate 421 in transverse direction are equipped with the first transverse prestress steel Beam 46, the both ends of the first bottom wing listrium 411 and the second bottom wing listrium 421 in transverse direction are equipped with the second lateral prestressing tendon 47.Specifically, first longitudinal direction prestressed strand 44 is pierced by the end of the longitudinal stress bellows positioned at first longitudinal direction bellows, and The first bottom wing listrium 413 two end faces along the longitudinal direction and the first web 412 are anchored at along the longitudinal direction by anchor Two end faces;Second longitudinal direction prestressed strand 45 is pierced by the end of the longitudinal prestressing bellows positioned at second longitudinal direction bellows Portion, and the second bottom wing listrium 423 two end faces along the longitudinal direction and the second web 422 are anchored at along longitudinal direction by anchor The two end faces in direction;First lateral prestressing tendon 46 is pierced by the end of the lateral stress bellows positioned at the first transverse wave pipe Portion, and be anchored at two outermost faces of two the first top flange plates 411 in transverse direction by anchor;Second is laterally pre- Stress steel beam 47 is pierced by the end of the lateral stress bellows positioned at the second transverse wave pipe, and is anchored at two by anchor At the outermost face of a first bottom wing listrium 413 in transverse direction;
First top flange plate 411 and the second top flange plate 421 are equipped in transverse direction laterally answers in advance for connecting first First transverse wave pipe of power steel beam 46, the first bottom wing listrium 413 and the second bottom wing listrium 423 are equipped with are used in transverse direction Connect the second transverse wave pipe of the second lateral prestressing tendon 47;
Moreover, according to the actual stress condition of Single-box multi-chamber box girder, user adjustable first laterally answers in advance The beam number and spacing of power steel beam 46 and the second lateral prestressing tendon 47, thus reinforce prefabricated side bar 41 and prefabricated central sill 42 it Between lateral ties and adjacent prefabricated central sill 42 between lateral ties, and can effectively improve the outer rim of prefabricated side bar 41 Stress.
In the present embodiment, as shown in figure 1-9, in order to enable Single-box multi-chamber box girder 4 preferably adapts to different types of bridge Beam, when bridge is the wide bridge of straight line, the first top flange plate 411 along the longitudinal direction on width be set as wide, the first bottom wing Listrium 413 along the longitudinal direction on width be set as wide;Second top flange plate 421 along the longitudinal direction on width be set as wide, Second bottom wing listrium 423 along the longitudinal direction on width be set as wide;
When bridge be broaden bridge when, the second top flange plate 421 along the longitudinal direction on width be set as broadening, the second bottom wing Listrium 423 along the longitudinal direction on width be set as broadening;
When bridge is the curve bridge with certain curvature radius, the outer side wing edge of the first top flange plate 411 is camber line Shape, so that Single-box multi-chamber box girder 4 can be suitably used for the curve bridge with certain curvature radius.
In the present embodiment, as shown in figure 1-9, the first bottom wing listrium 413 include first end 4131 and with 4131 phase of first end To the second end 4132 of setting, first end 4131 is in the shape of a hoof, and first end 4131 extends outwardly 20~50cm, to apply in bridge Temporary support or temporary support 6 are easily installed during work.
In the present embodiment, as shown in figure 1-9, in order to further enhance adjacent prefabricated side bar 41 and prefabricated central sill 42 it Between connection tightness and adjacent prefabricated central sill 42 between connection tightness, transverse connection structure 43 be wet seam, first Top flange plate 411 and second top flange plate 421 adjacent with the first top flange plate 411 are connect by wet seam, the first lower flange Plate 413 and the second bottom wing listrium 423 adjacent with the first bottom wing listrium 413 are connect by wet seam, the second adjacent top flange It is connected between plate 421 by wet seam, is connected between the second adjacent bottom wing listrium 423 by wet seam.Specifically, wet seam It is interior to be filled with ultra-high performance concrete, ultra-high performance concrete toughness with higher, higher compression strength and excellent resistance to Long property, basic ungauged regions under conditions of thermal curing, and under long-duration load effect, deform very little;
Certainly, steel knot can also be used between adjacent prefabricated side bar 41 and prefabricated central sill 42, adjacent prefabricated central sill 42 Structure transverse connection is attached, wherein in two adjacent precast beams, to the wing of the top flange plate of one of precast beam Preformed hole, the edge of a wing on the edge of a wing and bottom wing listrium to the top flange plate of another precast beam is arranged in the edge of a wing of edge and bottom wing listrium Pre-buried steel construction transverse connection, thus when to being lifted and being installed between two adjacent precast beams, it is only necessary to by steel Structure transverse connection is inserted into corresponding preformed hole, and the splicing between two adjacent precast beams can be realized.
In the present embodiment, as shown in figure 1-9, in order to the flexible of further satisfaction Single-box multi-chamber box girder 4, water-proof function and The requirement for avoiding raindrop erosion beam body, when Single-box multi-chamber box girder 4 is used for simply supported girder bridge, according to the across footpath length or connection of beam bridge It is long to calculate stroke, and according to calculated stroke size, expansion joint is installed at corresponding pier top or uses bridge floor Continuously;When Single-box multi-chamber box girder 4 is used for continuous bridge, then according to the long size of connection, the setting pair at the beam-ends of every continuous beam The expansion joint answered is poured pier top cast-in-place concrete above other bridge piers 3 of the connection at setting expansion joint, and bears accordingly Hogging moment steel beam is penetrated in moment of flexure bellows.
As shown in figs. 1-13, in order to reach identical purpose, the utility model also provides a kind of Single-box multi-chamber box beam bridge Construction method,
1) when Bridge Design is multi-span girder bridge, comprising the following steps:
S1, the construction that pile foundation 1, cushion cap 2, bridge pier 3 and bent cap are carried out in engineering ground, while in precasting yard described in progress The production of prefabricated side bar 41 and prefabricated central sill 42;
S2, multiple temporary supports 6 corresponding with prefabricated side bar 41 and prefabricated central sill 42 are installed on bent cap, and are facing When support 6 two sides install temporary support;
S3, prefabricated side bar 41 and prefabricated central sill 42 are lifted to temporary support 6 and temporary support, temporary support can enhance The mounting stability of prefabricated side bar 41 and prefabricated central sill 42;
S4, construction transverse connection structure 43, and at the same time installing permanent support 7;
S5, the first lateral prestressing tendon 46 penetrate the first top flange plate 411 and the second bottom wing listrium 423, and second laterally Prestressed strand 47 penetrates the first bottom wing listrium 413 and the second bottom wing listrium 423, and to 46 He of the first lateral prestressing tendon Second lateral prestressing tendon 47 carries out stretch-draw anchor, then removes temporary support;
S6, the casting cast-in-place layer concrete of bridge floor, to form bridge floor in-situ layer 5 on the top of Single-box multi-chamber box girder 4;
S7, temporary support 6 is removed;
S8, construction deck paving and affiliated facility, affiliated facility are the facilities such as anticollision barrier;
S9, operation are open to traffic;
2) when Bridge Design is beam structure, comprising the following steps:
S1, the construction that pile foundation 1, cushion cap 2, bridge pier 3 and bent cap are carried out in engineering ground, while in precasting yard described in progress The production of prefabricated side bar and prefabricated central sill, wherein install hogging moment in first top flange plate and second top flange plate Bellows;
S2, multiple temporary supports 6 corresponding with prefabricated side bar 41 and prefabricated central sill 42 are installed on bent cap, and are facing When support 6 two sides temporary support is installed, temporary support can enhance the mounting stability of prefabricated side bar 41 and prefabricated central sill;
S3, will prefabricated side bar 41 and the lifting of prefabricated central sill 42 on temporary support 6 and temporary support;
S4, construction transverse connection structure 43, and at the same time installing permanent support 7;
S5, the first lateral prestressing tendon 46 penetrate the first top flange plate 411 and the second bottom wing listrium 423, and second laterally Prestressed strand 47 penetrates the first bottom wing listrium 413 and the second bottom wing listrium 423, and to 46 He of the first lateral prestressing tendon Second lateral prestressing tendon 47 carries out stretch-draw anchor, then removes temporary support;
The cast-in-place continuous section concrete of pier top of S6, casting adjacent two across between, to complete system transform;
S7, hogging moment steel beam 8 is penetrated in hogging moment bellows, and tensioning is carried out to hogging moment steel beam 8, thus very well Solve the problems, such as continuous segment pier top hogging moment;
S8, the casting cast-in-place layer concrete of bridge floor, so that it is cast-in-place to form bridge floor in prefabricated side bar 41 and 42 top of prefabricated central sill Layer 5;
S9, temporary support 6 is removed;
S10, construction deck paving and affiliated facility, affiliated facility are the facilities such as anticollision barrier;
S101, operation are open to traffic.
Based on above-mentioned setting, the construction method of the Single-box multi-chamber box beam bridge of the utility model is had a characteristic that
(1) construction method that the Single-box multi-chamber box beam bridge of the utility model uses is prefabrication and lifting construction, prefabricated side bar 41 Production and construction is carried out using standardization, batch production and rapid high-volume mode with prefabricated central sill 42, therefore, this is practical Novel construction method can not only accelerate construction progress, but also avoid the installation and removal of extensive full framing and template, Moreover, construction environment can be improved well, reduce the influence to construction site surrounding enviroment, there is society well Economic benefit;
(2) it is multispan simply supported beam that the construction method of the Single-box multi-chamber box beam bridge of the utility model, which is applicable not only to bridge structure, Structure, but also being suitable for bridge structure is beam structure, has the characteristics that use scope is wide;
(3) construction method of the Single-box multi-chamber box beam bridge of the utility model can ensure that the stabilization of Single-box multi-chamber box beam bridge installation Property, safety and convenience, so as to further ensure that being installed in place for entire Single-box multi-chamber box beam bridge structure, and method is simple It is feasible, there is good promotional value.
Specifically, in the cast-in-place continuous section concrete of adjacent two pier tops across between, to be formed now across between adjacent two Pour continuous segment 9.
In the present embodiment, as shown in figs. 1-13, in order to improve prefabricated side bar 41 and prefabricated central sill 42 in prefabrication process Every quality index, and speed up the work, the prefabrication process of prefabricated side bar 41 and prefabricated central sill 42 is as follows:
1) when Bridge Design is multi-span girder bridge, in step S1, comprising the following steps:
S11, bridge structural calculation analysis is carried out according to design parameters such as span of bridge, class of loading and bridge widths, really The structure size of fixed each Single-box multi-chamber box girder 4, and then determine the structure size of prefabricated central sill 42 and prefabricated side bar 41, and The arrangement of prestressed strand is determined, so as to provide theoretical foundation for the manufacture of prefabricated side bar 41 and prefabricated central sill 42;
S12, construction precasting yard and pedestal;
S13, the installation and laying that 42 bed die of prefabricated 41 bed die of side bar and prefabricated central sill is carried out on pedestal;
S14, binding forms the reinforcing bar of prefabricated side bar 41 respectively on prefabricated 41 bed die of side bar and on 42 bed die of prefabricated central sill The framework of steel reinforcement of skeleton and prefabricated central sill 42, and in the reinforcing bar for the framework of steel reinforcement and prefabricated central sill 42 for forming prefabricated side bar 41 Pre-buried transverse connection structure 43 in frame, wherein form the framework of steel reinforcement of prefabricated side bar 41 and form the reinforcing bar of prefabricated central sill 42 Frame is bent by numerical control steel bar bender;
S15, longitudinal corrugated pipe is installed in the framework of steel reinforcement of the framework of steel reinforcement and prefabricated central sill 42 that form prefabricated side bar 41 With transverse wave pipe, wherein the first transverse wave pipe is installed in the framework of steel reinforcement of prefabricated side bar 41, in the steel of prefabricated central sill 42 Second transverse wave pipe is installed in tendons skeleton;
S16, carried out on pedestal prefabricated 41 side form of side bar, 41 end mould of prefabricated side bar, 42 side form of prefabricated central sill and it is prefabricated in The installation of 42 end mould of beam;
In S17, the first pouring basin formed to prefabricated 41 side form of side bar, 41 end mould of prefabricated side bar and 41 bed die of prefabricated side bar Framework of steel reinforcement in be poured concrete;It is formed to prefabricated 42 side form of central sill, 42 end mould of prefabricated central sill and 42 bed die of prefabricated central sill Concrete is poured in framework of steel reinforcement in second pouring basin;Finally check the position of each transverse connection structure 43;
Prefabricated side bar 41 and prefabricated central sill 42 after S18, casting complete are conserved, after curing time is greater than 7 days, and After the intensity and elastic model for forming the concrete of prefabricated side bar 41 and the concrete of prefabricated central sill 42 reach the 85% of design value, Remove 42 side form of prefabricated 41 side form of side bar and prefabricated central sill, wherein the prefabricated side bar 41 and prefabricated central sill 42 after casting complete are logical Automatic spray curing system is crossed to be conserved;
S19, first longitudinal direction prestressed strand 44 is penetrated into first longitudinal direction bellows, second longitudinal direction prestressed strand 45 is worn Enter second longitudinal direction bellows, after the completion of 45 lashing of first longitudinal direction prestressed strand 44 and second longitudinal direction prestressed strand, to One longitudinal prestressing steel beam 44 and second longitudinal direction prestressed strand 45 carry out tensioning, wherein above-mentioned stretching process passes through intelligent tensioning Equipment carries out;
S110, hole path pressure grouting and sealing off and covering anchorage maintenance are carried out, wherein hole path pressure grouting is carried out using Intelligent mud jacking system, and sealing off and covering anchorage can It is carried out by accelerated cement or gypsum;
2) when Bridge Design is continuous bridge, in step S1, comprising the following steps:
S11, bridge structural calculation analysis is carried out according to design parameters such as span of bridge, class of loading and bridge widths, really The structure size of fixed each Single-box multi-chamber box girder 4, and then determine the structure size of prefabricated central sill 42 and prefabricated side bar 41, and The arrangement of prestressed strand is determined, so as to provide theoretical foundation for the manufacture of prefabricated side bar 41 and prefabricated central sill 42;
S12, construction precasting yard and pedestal;
S13, the installation and laying that 42 bed die of prefabricated 41 bed die of side bar and prefabricated central sill is carried out on pedestal;
S14, binding forms the reinforcing bar of prefabricated side bar 41 respectively on prefabricated 41 bed die of side bar and on 42 bed die of prefabricated central sill The framework of steel reinforcement of skeleton and prefabricated central sill 42, and in the reinforcing bar for the framework of steel reinforcement and prefabricated central sill 42 for forming prefabricated side bar 41 Pre-buried transverse connection structure 43 in frame, wherein form the framework of steel reinforcement of prefabricated side bar 41 and form the reinforcing bar of prefabricated central sill 42 Frame is bent by numerical control steel bar bender;
S15, installed in the framework of steel reinforcement of the framework of steel reinforcement and prefabricated central sill 42 that form prefabricated side bar 41 longitudinal corrugated pipe, Transverse wave pipe and hogging moment steel beam bellows, wherein the first transverse wave pipe is installed in the framework of steel reinforcement of prefabricated side bar 41, Second transverse wave pipe is installed in the framework of steel reinforcement of prefabricated central sill 42;
S16, carried out on pedestal prefabricated 41 side form of side bar, 41 end mould of prefabricated side bar, 42 side form of prefabricated central sill and it is prefabricated in The installation of 42 end mould of beam;
In S17, the first pouring basin formed to prefabricated 41 side form of side bar, 41 end mould of prefabricated side bar and 41 bed die of prefabricated side bar Framework of steel reinforcement in be poured concrete;It is formed to prefabricated 42 side form of central sill, 42 end mould of prefabricated central sill and 42 bed die of prefabricated central sill Concrete is poured in framework of steel reinforcement in second pouring basin;Finally check the position of each transverse connection structure 43;
Prefabricated side bar 41 and prefabricated central sill 42 after S18, casting complete are conserved, after curing time is greater than 7 days, and After the intensity and elastic model for forming the concrete of prefabricated side bar 41 and the concrete of prefabricated central sill 42 reach the 85% of design value, Remove 42 side form of prefabricated 41 side form of side bar and prefabricated central sill, wherein the prefabricated side bar 41 and prefabricated central sill 42 after casting complete are logical Automatic spray curing system is crossed to be conserved;
S19, first longitudinal direction prestressed strand 44 is penetrated into first longitudinal direction bellows, second longitudinal direction prestressed strand 45 is worn Enter second longitudinal direction bellows, after the completion of 45 lashing of first longitudinal direction prestressed strand 44 and second longitudinal direction prestressed strand, to One longitudinal prestressing steel beam 44 and second longitudinal direction prestressed strand 45 carry out tensioning, wherein above-mentioned stretching process passes through intelligent tensioning Equipment carries out;
S110, hole path pressure grouting and sealing off and covering anchorage maintenance are carried out, wherein hole path pressure grouting is carried out using Intelligent mud jacking system, and sealing off and covering anchorage can It is carried out by accelerated cement or gypsum.
It should be understood that various information are described in the utility model using term " first ", " second " etc., but these Information should not necessarily be limited by these terms, these terms are only used to for same type of information being distinguished from each other out.For example, not departing from this In the case where utility model range, " first " information can also be referred to as " second " information, and similar, " second " information can also be with Referred to as " first " information.
The above is preferred embodiments of the present invention, it is noted that for the ordinary skill of the art For personnel, without departing from the principle of this utility model, several improvement and deformations can also be made, these improve and become Shape is also considered as the protection scope of the utility model.

Claims (8)

1. a kind of Single-box multi-chamber box beam bridge, which is characterized in that including substructure, Single-box multi-chamber box girder and bridge floor in-situ layer, institute It states Single-box multi-chamber box girder and is connect by permanent support with the top of the substructure;
The Single-box multi-chamber box girder includes two prefabricated side bars and multiple interconnections being located between two prefabricated side bars Prefabricated central sill, pass through transverse connection structure between the adjacent prefabricated central sill and connect, one end of each prefabricated side bar The one end for the prefabricated central sill being adjacent to respectively is connected by the transverse connection structure;
The prefabricated side bar and the prefabricated central sill are structural I-beam, and the middle part and bottom of the prefabricated side bar are along the longitudinal direction Both ends be connected separately with first longitudinal direction prestressed strand, the both ends of the middle part and bottom of the prefabricated central sill along the longitudinal direction point It is not connected with second longitudinal direction prestressed strand, the both ends of the top and bottom of the Single-box multi-chamber box girder in transverse direction connect respectively It is connected to the first lateral prestressing tendon and the second lateral prestressing tendon.
2. Single-box multi-chamber box beam bridge as described in claim 1, which is characterized in that the prefabricated side bar by the first top flange plate, First bottom wing listrium and the first web form structural I-beam, the top and bottom end of first web respectively with described first on Flange plate is connected with the first bottom wing listrium, and the both ends of the first bottom wing listrium and first web along the longitudinal direction are set There is first longitudinal direction prestressed strand;
The prefabricated central sill forms structural I-beam by the second top flange plate, the second bottom wing listrium and the second web, and described second The top and bottom end of web are connect with second top flange plate and the second bottom wing listrium respectively, the second bottom wing listrium Second longitudinal direction prestressed strand is equipped with the both ends of second web along the longitudinal direction;
The both ends of first top flange plate and second top flange plate in transverse direction are equipped with the first lateral prestressing tendon, The both ends of the first bottom wing listrium and the second bottom wing listrium in transverse direction are equipped with the second lateral prestressing tendon.
3. Single-box multi-chamber box beam bridge as claimed in claim 2, which is characterized in that described when bridge bridge wide for straight line First top flange plate along the longitudinal direction on width be set as wide, the first bottom wing listrium along the longitudinal direction on width be set as It is wide;
Second top flange plate along the longitudinal direction on width be set as wide, the second bottom wing listrium along the longitudinal direction on Width is set as wide.
4. Single-box multi-chamber box beam bridge as claimed in claim 2, which is characterized in that when bridge is to broaden bridge, described second Top flange plate along the longitudinal direction on width be set as broadening, the second bottom wing listrium along the longitudinal direction on width be set as becoming It is wide.
5. Single-box multi-chamber box beam bridge as claimed in claim 2, which is characterized in that when bridge is the song with certain curvature radius When line bridge, the outer side wing edge of first top flange plate is arc line shaped.
6. Single-box multi-chamber box beam bridge as claimed in claim 2, which is characterized in that the first bottom wing listrium include first end and The second end being oppositely arranged with the first end, the first end are in the shape of a hoof.
7. Single-box multi-chamber box beam bridge as claimed in claim 6, which is characterized in that the first end extends outwardly 20~50cm.
8. Single-box multi-chamber box beam bridge as claimed in claim 2, which is characterized in that the transverse connection structure is wet seam, institute It states the first top flange plate and second top flange plate adjacent with first top flange plate to connect by the wet seam, institute It states the first bottom wing listrium and the second bottom wing listrium adjacent with the first bottom wing listrium to connect by the wet seam, phase It is connected between adjacent second top flange plate by the wet seam, by described between adjacent the second bottom wing listrium Wet seam connection.
CN201821455124.9U 2018-09-05 2018-09-05 A kind of Single-box multi-chamber box beam bridge Active CN209114299U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111877182A (en) * 2020-09-03 2020-11-03 广东省建筑设计研究院有限公司 Novel construction method for upper structure of multi-chamber continuous UHPC box girder bridge

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111877182A (en) * 2020-09-03 2020-11-03 广东省建筑设计研究院有限公司 Novel construction method for upper structure of multi-chamber continuous UHPC box girder bridge
CN111877182B (en) * 2020-09-03 2021-09-14 广东省建筑设计研究院有限公司 Novel construction method for upper structure of multi-chamber continuous UHPC box girder bridge

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