WO2011108781A1 - Procédé de fabrication d'une poutre-caisson en acier composite et procédé de fabrication de pont à poutres-caissons l'utilisant - Google Patents

Procédé de fabrication d'une poutre-caisson en acier composite et procédé de fabrication de pont à poutres-caissons l'utilisant Download PDF

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Publication number
WO2011108781A1
WO2011108781A1 PCT/KR2010/004489 KR2010004489W WO2011108781A1 WO 2011108781 A1 WO2011108781 A1 WO 2011108781A1 KR 2010004489 W KR2010004489 W KR 2010004489W WO 2011108781 A1 WO2011108781 A1 WO 2011108781A1
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Prior art keywords
girder
bottom plate
formwork
bridge
steel
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PCT/KR2010/004489
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English (en)
Korean (ko)
Inventor
신동기
김충언
김성태
Original Assignee
주식회사 삼현피에프
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Priority claimed from KR1020100019898A external-priority patent/KR101125479B1/ko
Priority claimed from KR1020100020732A external-priority patent/KR101024827B1/ko
Application filed by 주식회사 삼현피에프 filed Critical 주식회사 삼현피에프
Publication of WO2011108781A1 publication Critical patent/WO2011108781A1/fr

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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
    • E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges

Definitions

  • the present invention secures the torsional rigidity of the steel girder by separating and placing the bottom plate concrete in the state in which the steel girder is mounted on the pier to enable the stable bridge construction without using the bracing material, and maximize the use efficiency of the steel and economical
  • the improved box-shaped bridge construction method secures the torsional rigidity of the steel girder by separating and placing the bottom plate concrete in the state in which the steel girder is mounted on the pier to enable the stable bridge construction without using the bracing material, and maximize the use efficiency of the steel and economical.
  • Steel composite girders are a composite of steel girders and concrete, and are widely used to fabricate bridges.
  • the box-shaped steel composite girders composed of closed sections have a high resistivity due to their large cross-sectional coefficients, and thus are widely applied to railroad bridges and long bridges with large impacts on live loads.
  • this box-shaped steel girder is not only difficult to weld due to difficulty in welding a plurality of reinforcing materials inside the closed section, but also deteriorates in constructability, and after the bottom plate is synthesized, there is a large amount of stress margin on the upper side of the neutral shaft.
  • the use of steel increased, resulting in a problem of lowering structural efficiency and economic efficiency.
  • the top flange of the steel girder is not only the bottom plate load before synthesis but also the secondary fixed load after the synthesis. And a large compressive stress is generated by the live load, thereby causing an uneconomical problem because the cross section of the upper flange fixed to the upper side of the 'U' shaped steel girder abdomen must be enlarged.
  • a plurality of bracing materials are required to prevent torsional deformation of the cutaway girder, which causes a problem of increasing manufacturing costs. .
  • removing the formwork and the support bar to support it also has to be done in a narrow and girder, causing a problem that must go through a very complicated and time-consuming process.
  • the method interconnects the segmental girders so that the self-weight is placed only on the steel girders on the partial deck, and once hundreds of bolts used to interconnect the segmental girders are dismantled because they are stressed by the partial deck mass Since it is almost impossible to reuse it, and the segment girder is connected to each other, deflection due to the weight of the segment girder is generated. There was a problem that became difficult to connect. Above all, the method requires connecting the segment girder with hundreds of bolts for the synthesis of the partial deck and then dismantling hundreds of bolts again to dispose of hundreds of bolts. The process of connecting the girder takes a long time, there was a problem that the construction and economic efficiency is deteriorated.
  • the technique to prevent the torsional deformation of the steel girder by synthesizing the partial bottom plate to the steel girder in advance the weight is greatly increased to transport the composite girder combined with the partial bottom plate to the construction site of the bridge, transportation and handling Tricky and uncomfortable problems have arisen.
  • the present invention enables stable bridge construction due to less torsional deformation without using a bracing material, and maximizes the use efficiency of the steel, thereby eliminating the problem that the upper flange is enlarged, thereby improving the economic efficiency of using the steel.
  • a major improvement is the other purpose.
  • the partial bottom plate and the floor are manufactured at the construction site of the bridge instead of the factory to synthesize the partial bottom plate in the steel girder having the 'U' cross section at the factory. Another aim is to improve the efficiency of reinforcement of plates.
  • the present invention by the compressive stress due to the self-weight acts on the partial bottom plate to be pre-synthesized in the opening of the U-shaped segmented steel girder, so that the concrete synthesized into the partial bottom plate can be utilized as a member to resist the weight of the additional floor
  • the cost of disposing hundreds of bolts in the temporary connection process of the segment girder, compared to the method of compositing so that the partial bottom plate is not subject to compressive stress due to its own weight Another aim is to be able to eliminate waste and resources.
  • the present invention is to produce a box-shaped steel composite girders that can manufacture a bridge by a simple process in a much shorter time than in the prior art, and to use this to construct a steel box-shaped bridge.
  • the present invention consists of an upper flange, a lower flange and a pair of abdomen, and the center portion in the longitudinal direction is open at the top to produce a steel girder having a 'U' shape in cross section.
  • the present invention is configured to synthesize the slab concrete in two steps, the amount of unnecessary steel that does not contribute to the resistance of the bridge in the final installation state as a bridge is minimized to maximize the efficiency of the use of steel and accordingly economical It can be greatly improved.
  • pre-synthesis of the partial bottom plate in the steel girder of the 'U' cross section has the advantage of ensuring the structural stability of the 'U' steel girder, which is susceptible to torsional deformation, Difficult to connect the partial reinforcing bars to the outside of the partial reinforcing bar, and to connect with the reinforcing bars embedded in the concrete of the bottom plate in the synthesis of the partial bottom plate by pouring This was accompanied.
  • the present invention does not need to separately reinforce the reinforcing bars embedded in the partial bottom plate and the reinforcing bars embedded in the bottom plate, as the partial bottom plate is installed in the field, and after splitting the partial bottom plate and the bottom plate Since it is necessary to pour concrete, the advantage that the connection between the partial bottom plate and the bottom plate can be more firmly and conveniently obtained.
  • the conventional partial bottom plate was first synthesized in the factory, it was possible to prevent the torsional deformation from occurring during transportation and handling of the steel girder having the 'U'-shaped cross section, but the steel girder according to the present invention has both ends in the longitudinal direction. As it is formed to form a closed section including the ' ⁇ ' cross section, the problem that the conventional steel girder of the 'U' shaped cross section is torsionally deformed during handling or transport.
  • the steel girder is not formed in a 'U'-shaped cross section over the entire length, and both ends of the steel girder are closed to form a' ⁇ 'shape, the partial bottom plate after fabricating the steel girder Until compounding, the twisting deformation can be easily suppressed in the process of handling the steel girder or installing the formwork required to synthesize the partial deck, eliminating the problem of installing more bracing or reinforcement to prevent torsional deformation. You can do it.
  • the steel girder produced in the girder manufacturing step is a segmented steel girder segmented so that a plurality of longitudinal girder is connected in the longitudinal direction;
  • in the girder step may be to mount the integrated steel girder on the bridge device of the bridge substructure have.
  • the present invention synthesizes a partial bottom plate in a state in which a partial bottom plate is not synthesized in a steel girder having a 'U'-shaped cross section in a factory, and thus the' U 'shaped segment girder is connected to each other.
  • the partial bottom plate it is possible to fabricate the partial bottom plate so that it does not bear the weight of the box-type composite girder, and in particular, it is possible to eliminate the cost and resource waste of hundreds of bolts used in the conventional temporary connection process. Obtained.
  • the first formwork installation step may be performed before the girder stacking step. This is because 'U' girders are easily torsionally deformed, so that the first formwork is pre-installed on 'U' steel girders without performing concrete placing for the synthesis of the partial bottom plate. This is to use as a means of suppressing torsional deformation of steel girders. Therefore, when the first formwork installation step is performed at the factory after the girder fabrication step, the first formwork has an ability to resist torsional deformation during the handling or transportation of the 'U'-shaped steel girder. It is possible to more effectively prevent the non-spacing deformation of.
  • the steel girders are arranged in two or more rows in the transverse direction, the second formwork is installed to fill the gap between the steel girders spaced in the transverse direction.
  • the second formwork installed in a state in which the steel girder is mounted on the upper portion of the bridge or the pier, which is a lower structure of the bridge, is usually installed to be supported by the steel girder.
  • the box-shaped bridge may be manufactured as a continuous bridge of two or more spans, and in the case of the continuous bridge of two or more spans, the box-shaped bridge may be connected to the integrated girder in a longitudinal direction and mounted on the pier top of the continuous portion of the continuous bridge.
  • the step of manufacturing a parent cement girder forming a closed section of the ' ⁇ ' shape; In the upper portion of the bridge, which is a continuous portion of the continuous bridge, the parent cement steel girder is arranged between the steel girders.
  • the lower flange of the parent cement girder may be synthesized to further include cross-sectional reinforcement concrete.
  • the first formwork is formed of permanent formwork which is mounted with the partial bottom concrete.
  • the formwork used to synthesize the partial deck into a 'U' shaped steel girder can be used as a dismantle, but it can also be used as a permanent formwork permanently installed on a bridge with a partially decked concrete, such as a deck plate. have.
  • the partial bottom plate is synthesized in the 'U'-shaped steel girder, eliminating the process of removing the formwork and the copper bar, the workability is further improved.
  • the first die is not supported by the copper club, it is mounted on the upper flange.
  • the second formwork is preferably formed as a separate formwork separated after curing the concrete for the convenience of maintenance during use.
  • the present invention the upper flange and the lower flange and a pair of abdomen, the central portion in the longitudinal direction is open in the upper side of the U-shaped cross-section, the upper end is closed and the cross-section is ' ⁇ ' shaped steel box type
  • a girder production step of manufacturing a segmented steel girder A formwork installation step of installing a formwork for placing the bottom plate concrete for closing the opening in a central portion of the segmented steel girder with an upper portion open so as to be supported by a copper bar;
  • the mold for closing the opening is installed in the center of the segmented steel girder so that the partial bottom plate which closes the opening of the U-shaped segmented steel girder is installed.
  • the compressive stress due to its own weight acts on the partial bottom plate, but it is convenient for the work in the process of interconnecting the U-shaped segmented girder which takes a long time unlike the conventional art. And at the same time, to eliminate the cost and waste of resources to discard hundreds of bolts used in the temporary connection process of the U-shaped segment girder.
  • the partial bottom plate forming the closed portion of the U-shaped segmented steel girder is formed of high-strength concrete having a higher compressive strength than the bottom plate concrete in order to withstand the compressive stress caused by its own weight, thereby satisfying the construction and economic efficiency and having sufficient resistance.
  • a partial bottom plate can be provided. In this way, the compressive stress is largely applied to the partial bottom plate synthesized with high-strength concrete due to the load of the bottom plate concrete that is constructed in the field, and the secondary fixed load and live load such as coated pavement. Make it bearable.
  • the composite bottom plate may be prepared after fabricating the segment steel girder.
  • the distortion that is easily twisted can be suppressed, thereby eliminating the problem of installing more bracing or reinforcement to prevent torsional deformation.
  • the connection between the connecting members can be improved.
  • the girder manufacturing step including fixing the part of the formwork for synthesizing the partial bottom plate in the longitudinal direction of the segmented steel girder to the segmented steel girder in advance, It is possible to reduce the installation process of the formwork for synthesizing the partial bottom plate in the segmented steel girder.
  • both end forms of iron material pre-installed in the segmented steel girder are provided with protrusions extending longitudinally outwardly of the partial bottom plate, such as, for example, reinforcing bars, so that several segmented steel girder is in the longitudinal direction. Even if the bottom plate of the full thickness is poured after being mounted on the piers or shifts for the bridge construction after connection, the good connection in the longitudinal direction between the later synthesized bottom plate and the pre-synthesized partial bottom plate can be maintained. .
  • both end forms of iron which are pre-installed in the segment steel girder, have a hole through which the reinforcing bar reinforcing the partial bottom plate can penetrate both end forms, and can be separated up and down about the hole. It may be formed.
  • the lower formwork of both end formwork is fixed to the segmented steel girder in advance, and some of the reinforcing bars reinforcing the partial bottom plate are placed to pass through the holes of both end formwork, and then the upper formwork of both end formwork is placed on the lower formwork.
  • the partial bottom plate synthesized while the reinforcing bars of the partial bottom plate penetrates the both end forms can be firmly supported by the both end forms.
  • the present invention the upper flange and the lower flange and a pair of abdomen, the central portion in the longitudinal direction is open in the upper side of the U-shaped cross-section, the upper end is closed and the cross-section is ' ⁇ ' shaped steel box type
  • a girder production step of manufacturing a segmented steel girder A formwork for placing partial bottom concrete for closing the opening at the center of the segmented steel girder with an open top, wherein the formwork is permanently installed on the bridge with the partial bottom concrete to be installed in the segment steel girder.
  • the formwork used to synthesize the partial bottom plate into the U-shaped segmented steel girder may be used for dismantling, but may also be used as a permanent formwork permanently installed on the bridge with the partially decked concrete, such as deck plate. .
  • the partial bottom plate is synthesized in the U-shaped segmented steel girder, it is possible to eliminate the process of removing the formwork and the grouping, thereby improving the workability.
  • the formwork is mounted on the upper flange because it is not supported by the group.
  • the box-shaped composite girder may be synthesized from the segmented steel girder and the partial bottom plate in the field, but before being transported to the site in order to more effectively suppress the occurrence of torsional deformation during the handling or transportation of the segmented steel girder. It is good to be made in.
  • the present invention to produce a box-shaped steel composite girders as described above Steps; Transporting the composite girder to which the partial bottom plate is synthesized; A girder integration step of manufacturing the integrated girder by connecting the steel composite girders in the longitudinal direction at the construction site of the bridge; A girder step of mounting the integrated girder to be spaced apart from each other by a predetermined distance in at least one or more transverse directions on a bridge device of a bridge substructure; A second formwork installation step of installing a second formwork for placing bottom plate concrete on the upper side of the integrated girder; Reinforcing the reinforcing bar embedded in the bottom plate concrete; A bottom plate synthesizing step of synthesizing the bottom plate concrete having a predetermined thickness on the second formwork and the partial bottom
  • the steel box-type bridge may be manufactured in a continuous bridge of two spans or more, when the bridge is manufactured in a continuous bridge of two spans or more is connected to the integrated girder in the longitudinal direction is mounted on the pier top of the continuous portion of the continuous bridge
  • the method further includes manufacturing a parent cement steel girder that forms a closed section of a ' ⁇ ' shape over the entire length; In the upper portion of the bridge, which is a continuous portion of the continuous bridge, the parent cement steel girder is arranged between the steel girders.
  • the lower flange of the parent steel girder may further synthesize the cross-sectional reinforcement concrete to more effectively resist the compressive stress acting on the lower part of the girder at the upper part of the continuous pier.
  • the present invention is not performed at the factory for synthesizing the partial bottom plate to the 'U'-shaped steel girder, but at the construction site of the bridge, much heavier than the' U'-shaped steel girder.
  • the bottom plate has the beneficial effect of relieving the difficulty of carrying the synthesized rigid girder.
  • the present invention is synthesized the bottom plate by performing a second step of synthesizing the bottom plate by the second die after first synthesized a partial bottom plate for closing the 'U'-shaped steel girder by the first formwork.
  • the torsional stiffness can be secured in the process, and in the state where the partial bottom plate is synthesized, the flexural stiffness increases as the 'U'-shaped steel girder is closed, so that the load added afterwards, that is, the remaining bottom plate concrete weight, pavement, etc.
  • Advantageous effects of preventing the occurrence of large compressive stress in the upper flange of the U-shaped steel girders are obtained by secondary fixed load and live load.
  • the present invention enables the upper flange of the 'U'-shaped steel girder to be formed small in an appropriate size, thereby minimizing the use of unnecessary steel girder that does not contribute to the resistance capacity of the bridge in the final installation state as a bridge
  • the efficiency of steel use can be maximized and the economic efficiency can be greatly improved.
  • the partial bottom plate concrete and the bottom plate concrete are separately placed after the reinforcing bars embedded in the partial bottom plate and the reinforcing bars embedded in the bottom plate are not reinforced at the same time as the partial bottom plate is constructed in the field. Since the partial bottom plate is synthesized in the steel girder at the factory, it solves the conventional problem that the reinforcement of the connecting reinforcing bar for the rigid connection with the bottom plate which is poured in the field is synthesized, The advantage that the connection between the plate and the bottom plate can be made more robust and simple.
  • the present invention instead of synthesizing the partial bottom plate in advance to form a closed cross-section to prevent torsional deformation during transportation and handling of the conventional 'U' shaped steel girders, instead of the steel girder according to the present invention Since both ends in the longitudinal direction are formed to form a closed cross section including a ' ⁇ ' cross section, the advantage that the steel girders of the conventional 'U' cross section can suppress the occurrence of distortion deformation during handling or transportation is obtained. .
  • the present invention is easily suppressed deformation in the process of installing the formwork required to handle the steel girder or to synthesize the partial bottom plate until the partial bottom plate is synthesized after manufacturing the steel girder, partial It is possible to solve the problem of installing more bracing or reinforcing material to prevent torsional deformation of the steel girder in the synthesis process of the bottom plate.
  • the formwork for closing the opening in the central portion of the segmented steel girder is installed so as to be supported in the copper bar, all the U-shaped segmented steel girder is assembled
  • the partial bottom plate that closes the opening of the U-shaped segmented steel girder has a compressive stress due to its own weight acting on the partial bottom plate, which not only reduces steel consumption,
  • This long-standing U-shaped segment girder can be easily connected to each other, while at the same time eliminating the cost and resource waste of hundreds of bolts used in the U-type segment girder's temporary connection process. Can be.
  • the partial bottom plate which is pre-constructed to form the closed portion of the U-shaped segmented steel girder, is formed of high-strength concrete having a higher compressive strength than the bottom plate concrete in order to more effectively resist the compressive stress caused by its own weight. It has the advantageous effect of producing a box-shaped composite girder with a partial bottom plate having sufficient resistance capability while satisfying the economy.
  • the present invention according to the construction of the bridge using a box-shaped steel composite girders having a partial bottom plate synthesized in high-strength concrete, the load of the bottom plate concrete to be constructed in the field, the secondary fixed load such as pavement And the advantage that the compressive stress acting largely by the live load can be more effectively resisted by the partial bottom plate.
  • the present invention even if the bottom plate concrete in the construction site of the bridge after pre-synthesizing the partial bottom plate in the U-shaped cross-section steel girder in the factory, the upper flange in order to withstand the casting weight of the bottom plate concrete as in the prior art Even if it is not enlarged, it is possible to maximize the use efficiency of steel girder because the closed section is already formed by the partial bottom plate and the neutral shaft is moved to a sufficiently high position to effectively support the weight and live load of the bottom plate. Advantages are obtained.
  • the present invention synthesizes the partial bottom plate forming the closed portion of the U-shaped segmented steel girder, by using a permanent formwork embedded with the partial bottom plate concrete, after the partial bottom plate is synthesized in the segmented steel girder It is not necessary to remove the formwork and the copper rim, so that an advantageous effect of improving air shortening and workability is obtained.
  • the center portion of the segmented steel girder has a U-shaped cross section, but both ends of the ' ⁇ ' shaped closed section, not only when constructing the bottom plate in the field, but also when constructing the partial bottom plate in the factory.
  • the low torsional deformation without the use of ash also provides the advantage that the box-shaped composite girders can be easily manufactured in a short time and at low cost.
  • FIG. 1 is a perspective view showing the configuration of a steel girder for constructing a box-shaped bridge according to a first embodiment of the present invention
  • FIG. 2 is a cross sectional view taken along the line A-A of FIG.
  • Figure 3 is a cross-sectional view along the cutting line B-B of Figure 1
  • Figure 4 is a schematic diagram showing the configuration of conveying the steel girder of Figure 1 to the bridge construction site
  • FIG. 5 is a perspective view showing an integrated steel girder connecting the steel girder of FIG. 1 carried to a construction site;
  • FIG. 6 is a schematic view showing a state in which a simple bridge is constructed by mounting the integrated steel girder of FIG. 5 on a lower structure of a bridge;
  • FIG. 7 is a schematic view showing a state in which a continuous bridge is constructed by mounting the integrated steel girder of FIG. 5 on a lower structure of a bridge;
  • FIG. 7 is a cross-sectional view taken along the cutting line C-C and the cutting line D-D of the integrated steel girder of FIG.
  • FIG. 9 is a cross-sectional view of a configuration in which a first formwork is installed in the opening of the integrated steel girder of FIG.
  • FIG. 10 is a cross-sectional view of a configuration in which a second formwork is installed between the integrated steel girders of FIG. 8; FIG.
  • FIG. 11 is a cross-sectional view of a structure in which reinforcing bars are installed on an upper portion of the first formwork of FIG. 9 and the second formwork of FIG.
  • FIG. 12 is a cross-sectional view showing a state in which a partial bottom plate is synthesized in a steel girder by pouring concrete into the first formwork of FIG.
  • Figure 13 is a cross-sectional view showing a state in which the bottom plate is composited to the steel girder by placing concrete in the second formwork of Figure 12
  • FIG. 14 is a cross-sectional view taken along the cutting line M-M of FIG. 7 showing a shape in which concrete is poured on a parent member.
  • 15 is a flowchart sequentially illustrating a method of constructing a box-shaped bridge according to a first embodiment of the present invention.
  • Figure 16 is a perspective view showing the configuration of a box-shaped steel composite girder according to a second embodiment of the present invention
  • FIG. 17 is a perspective view illustrating a steel girder for manufacturing a box-shaped composite girder of FIG.
  • FIG. 18 is a cross sectional view along cut line E-E in FIG. 17; FIG.
  • Fig. 19 is a cross sectional view along cut line F-F of Fig. 17;
  • FIG. 20 is a cross sectional view of a configuration in which a first formwork is installed in the opening of the steel girder of FIG. 17;
  • 21 is a cross-sectional view of a configuration in which reinforcing bars are installed in an upper portion of the first formwork of FIG. 20;
  • 22 is a cross sectional view of a configuration in which a partial bottom plate is synthesized in an opening of a steel girder;
  • FIG. 23 is a schematic diagram showing the step of carrying the box-shaped composite girder of FIG.
  • FIG. 24 is a perspective view of an integrated girder connecting the box-shaped composite girder of FIG. 16;
  • FIG. 25 is a schematic view showing a state in which a simple bridge is constructed by mounting the integrated girder of FIG. 24 on a lower structure;
  • FIG. 26 is a schematic view showing a state where a continuous bridge is constructed by mounting the integrated girder of FIG. 24 on a lower structure;
  • Fig. 27 is a cross sectional view along cut lines G-G and H-H showing a state where reinforcing bars are placed on a mounted integrated girder and a second formwork is installed;
  • Fig. 28 is a cross sectional view showing a configuration in which a bottom plate is synthesized using a second die
  • FIG. 29 is a longitudinal sectional view of FIG. 28;
  • FIG. 30 is a cross sectional view along cut line K-K in FIG.
  • Figure 31 is a flow chart showing in sequence the construction method of the box-shaped bridge according to the second embodiment of the present invention
  • FIG. 32 is a cross sectional view taken along the line B-B of FIG. 17 in which a first formwork of the permanent formwork is installed in the opening of the steel girder, as a step of the manufacturing method of the box-type steel composite girder according to the third embodiment of the present invention;
  • FIG 33 is a perspective view of a box-shaped composite girder manufactured by the method for manufacturing a box-shaped composite girder according to the fourth embodiment of the present invention.
  • FIG. 34 is a perspective view showing the shape of the steel girder of FIG. 33;
  • 35 is an enlarged view of a portion 'X' of FIG.
  • FIG. 36 is an enlarged view of a portion 'X' of FIG. 33 according to another embodiment.
  • the box-shaped bridge constructed according to the first embodiment of the present invention is produced through the following process.
  • a transportation means 88 such as a truck
  • the height, width, and length thereof are limited, so that the site is mainly manufactured in a segmented form at the factory It is transported to and is being constructed in the form of connecting it.
  • the present invention includes a configuration in which the steel girder 110 is manufactured and mounted integrally in the longitudinal direction rather than in the form of a segment, in which case the steel girder 110 is formed of a segmental girder.
  • a configuration in which several steel girders are bridged in a longitudinally interconnected state will be described.
  • Step 1 First, as shown in FIG. 1, the steel girder 110 is manufactured to have a 'U' shape in which the central portion 110m is opened (S110).
  • the steel girder 110 has a lower flange 111 forming a bottom surface, a pair of abdomen 112 extending upward from a position slightly spaced apart from both ends of the lower flange 111, and a central portion 110m.
  • the upper flange 113 coupled to the upper surface of the abdomen 112 and the bottom plate is formed on the upper side of the steel girder 110 when the opening CX is formed so that the bottom plate and the steel girder 110 are more firmly synthesized.
  • the closed ends of the ' ⁇ ' shape are formed at both ends 110e of the steel girder 110, and the 'U' shaped open surface is formed at the central portion 110m therebetween.
  • both ends (110e) is provided with a ' ⁇ ' shaped closed section, the formwork required to handle the steel girder 110 or to synthesize a partial bottom plate In the process of installing the torsional deformation can be prevented from occurring.
  • the steel girder 110 is long interconnected in the longitudinal direction to be mounted on the bridge device in the construction of the bridge, a plurality of bolt holes (111a, 112a at the end for the bolt connection with the adjacent steel girder 110) , 113a) is formed in advance.
  • Step 2 When the production of the steel girder 110 is completed, as shown in Figure 4, the steel girder 110 produced at the factory is transported to the site by the transport means 88 (S120).
  • Step 3 As shown in Figure 5, a plurality of segmented steel girder 110 carried to the construction site of the bridge is firmly connected in the longitudinal direction integral steel girder (100 ') of the length corresponding to the span of the bridge. Produce (S130). At this time, as shown in the figure, in order to interconnect the segmented steel girder 110 in the longitudinal direction, the holes of the connecting plate 160 and the holes 111a, 112a, 113a of the steel girder 110 are usually numerous. It is performed by fastening in the state which penetrated the bolt simultaneously.
  • Step 4 Lifting the integrated steel girder (100 ') manufactured as described above with a crane bridge device (10a, 20a) of the lower structure of the bridge in the form of a simple bridge shown in Figure 6 or a continuous bridge shown in Figure 7 Mount it on (S140).
  • a crane bridge device (10a, 20a) of the lower structure of the bridge in the form of a simple bridge shown in Figure 6 or a continuous bridge shown in Figure 7 Mount it on (S140).
  • only one steel girder 100 ′ integrated according to the width of the bridge to be constructed may be mounted in two or more rows, although only one may be mounted along the transverse direction.
  • the integrated steel girder 100 ′ will be described with an example of a bridge in which three rows are arranged along the transverse direction.
  • the cross section along the cut line CC and the cut line DD of FIG. 7 is formed the same as or similar to the cross section along the cut line CC and the cut line DD of FIG. 6, as shown in FIG.
  • the continuous bridge is constructed by mounting the parent girder 190 on the upper portion of the pier 20, which is a continuous portion
  • the integrated steel girder 100 ′ and the parent cement girder 190 are constructed.
  • Temporary temporary piers may be used to interconnect.
  • the parent girder 190 is formed of a ⁇ 'shaped steel girder consisting of a lower flange 191, a pair of abdomen 192 and an upper flange 193 for closing them.
  • the compressive stress according to the parent moment acts greatly on the lower edge of the neutral shaft girders 190, and in order to more effectively withstand the compressive stresses of the lower edge of the girder neutral shaft according to the parent cement, the lower flange has a reinforced section (195). You can also make it more synthetic.
  • Step 5 Then, as shown in FIG. 9, the first formwork 120 for placing the partial bottom plate 140 for closing the opening CX located at the central portion 110m of the integrated steel girder 110. ) To install (S150). At this time, the first formwork 120 may be supported by the copper bar, but is preferably installed as a permanent formwork permanently synthesized with the partial bottom plate 140.
  • the first formwork 120 used as a permanent formwork is mounted so that both ends are supported on the upper flange 113 of the steel girder 110, at this time the first formwork 120 Is to secure a certain rigidity in order to prevent deformation during the partial bottom plate 140 is placed, although in the figure is shown in a flat shape for convenience, the cross-section is formed to be more firmly attached to the partial bottom plate 140 to be poured It is also possible to use deck plates and the like.
  • the side form 122 is installed so as to distinguish the boundary in the transverse direction in which the partial bottom plate 140 is poured.
  • Step 6 Then, as shown in FIG. 10, a second formwork 170 for synthesizing the bottom plate is installed between the integrated steel girders 100 'arranged laterally spaced apart (S160).
  • the second formwork 170 may be configured as a permanent formwork like the first formwork, but it is preferable to use the formwork which is removed after curing the concrete in order to perform the maintenance more conveniently by exposing the appearance in the completed state. . That is, the second formwork that can be removed extends to the outside (inner section) between the formwork 171 for placing the bottom plate concrete between the integrated steel girders 100 'and the outermost girder in the transverse direction.
  • the end formwork 173 and the side formwork 172 positioned at both ends of the end formwork 173 and defining both ends of the bottom plate concrete are configured.
  • the end of the lower flange 111 protruding from the abdomen 112 of the steel girder 100 ′ is installed so that the brace 174 is supported at both ends, and the formwork 171 is between the clubs (174) located on the brace 174. 175) to be supported.
  • the length of the copper 175 is adjustable by the turnbuckle (175a), so that the gap between the formwork 171 and the upper flange 113 of the composite girder 100 so as not to generate a gap between the formwork 171 ) Can be installed.
  • the end formwork 173 is supported below by the triangular support 173a so that it may be supported by the side of the outermost steel girder 100 'in the horizontal direction.
  • Step 7 the reinforcing bar 180 is disposed inside the first formwork 120 on which the partial bottom plate 140 is placed and the second formwork 170 on which the bottom plate is poured. (S170).
  • the reinforcing bar 180 is arranged in the interior of the first formwork 120 and the second formwork 170 in one reinforcement operation.
  • Step 8 the concrete which is not hardened in the first formwork 120 is cast so that the partial bottom plate 140 is synthesized on the upper side of the 'U'-shaped steel girder 110 as shown in FIG. Constructed in the form of a synthetic girder (S180). Accordingly, the cross-section stiffness is greatly increased as compared with the case of the steel girder 110 only, and even if the heavy slab concrete is poured into the second formwork 170, the torsional displacement of the steel girder 110 is limited. And the bending compressive stress generated in the upper flange of the steel girder 110 also divides the bottom plate 140 so that the upper flange is excessively large, thereby eliminating the problem that the amount of steel used is unnecessary. .
  • step 5 the side formwork 122 installed in step 5 may be removed as needed, or may be installed in a state embedded in the bottom plate concrete.
  • Step 9 Then, as shown in FIG. 13, the concrete is poured into the second formwork 170 to synthesize the bottom plate 150, and the second formwork 170 is dismantled (S190).
  • Step 10 Finally, facing the pavement surface 151 such as asphalt on the top of the bottom plate 150, to install the protective wall 152 and the like to complete the construction of the bridge (S200).
  • the partial bottom plate 140 for closing the 'U'-shaped steel girder 110 by the first formwork 120 is first.
  • the synthesis is performed in two steps to synthesize the bottom plate 150 through which the vehicle or the like passes by the second formwork 170, in the state of the partial bottom plate 140 synthesized 'U' shaped steel girder ( As the 110 is closed, the torsional rigidity is increased, and thus, the load of the added bottom plate concrete is resisted in the state where the partial bottom plate is synthesized, thereby preventing excessive compressive stress from occurring at the upper flange of the steel girder 110, and thus the bridge
  • an advantageous effect can be obtained to maximize the efficiency of steel use and thereby greatly improve the economics.
  • the construction method of the box-shaped bridge according to the first embodiment of the present invention as described above (S100) is buried in the reinforcing bars and bottom plates embedded in the partial bottom plate as the construction of the partial bottom plate 140 in the field Since the reinforcing bars 180 are arranged at one time without reinforcing the reinforcing bars separately, the partial bottom plate concrete and the bottom plate concrete are divided and poured so that the partial bottom plate 140 is pre-synthesized in the steel girders at the factory.
  • the partial bottom plate 140 is much heavier than the' U'-shaped steel girder 110
  • An advantageous effect is also obtained that can overcome the difficulties of carrying the composite girder 140 synthesized.
  • Box-shaped composite girder 200 is manufactured according to the second embodiment of the present invention, as shown in Figure 16 after the reinforcing bar 230 is arranged on the upper side of the segmented steel girder 210 segmented steel girder 210
  • the partial bottom plate 240 covering the opening CX of the composite is synthesized and used to be mounted on the bridge in a state in which a plurality of longitudinal plates are connected.
  • Such a box-shaped steel composite girder 200 is manufactured through the following process.
  • Step 1 First, as shown in FIG. 17, a segmented steel girder 210 having a U-shaped cross section having an open center portion 210m is manufactured (S210).
  • the segmented steel girder 210 has a lower flange 211 forming a bottom of the segmented steel girder 210 and a pair of abdomen 212 extending upward from a position slightly spaced apart from both ends of the lower flange 211. ), An opening CX is formed in the central portion 210m, and the upper flange 213 coupled to the upper surface of the abdomen 212 and the bottom plate are placed on the upper side of the segmented steel girder 210.
  • a plurality of studs 214 projecting upwardly fixed to both sides of the upper flange 213, the lower flange 211, the abdomen 212, and the upper flange 213 are firmly joined to each other so that the 210 is more firmly synthesized. It consists of a plurality of reinforcing material 215 to connect.
  • both ends (210e) of the segmented steel girder 210 is formed to form a closed cross-section by the ' ⁇ ' character phenomenon, the upper portion in the central portion (210m) therebetween
  • both ends 210e have a closed section of ' ⁇ ' shape, so as to handle or partly segmented steel girder Twisting deformation can be prevented from occurring during the synthesis of the bottom plate.
  • segmented steel girder 210 is interconnected in the longitudinal direction so that it can be mounted on the bridge device in the construction of the bridge, so that both ends of the segmented steel girder 210 with the adjacent segmented steel girder 210
  • a plurality of bolt holes 211a, 212a, and 213a for the longitudinal bolt connection are formed in advance.
  • Step 2 Then, as shown in FIG. 20, install the formwork 220 for placing the partial bottom plate 240 for closing the opening (CX) located in the central portion (210m) of the segmented steel girder 210. do.
  • the partial bottom plate 240 is installed so as to be supported by the copper 221 to prevent deformation of the formwork due to its own weight, between the formwork 220 and the upper flange 213 of the segmented steel girder 210.
  • the copper club 221 is provided with a turnbuckle 221a for height adjustment.
  • the formwork 220 is installed in close contact with the lower surface of the upper flange 213 of the segmented steel girder 210.
  • the reinforcing bar 230 to reinforce the strength of the concrete poured between the floor formwork 220 and the side formwork 222 is reinforced (S220).
  • the reinforcing bar 230 is embedded in the reinforcing bar 231 embedded in the partial bottom plate 240 and embedded in the bottom plate concrete at the construction site of the bridge to vertically up and down the partial bottom plate 240 and the bottom plate (250 in FIG. 28). It consists of exposed reinforcing bars 232 and 233 connecting in the longitudinal and longitudinal directions.
  • Step 3 Then, as shown in Fig. 22, high-strength concrete having a higher compressive strength than the bottom plate concrete poured at the construction site of the bridge is poured into the formwork 220, 222, U-shaped segment steel girder 210 ) To synthesize the partial bottom plate 240 (S230). Accordingly, in the box-shaped steel composite girder 200 in which the partial bottom plate 240 is synthesized in the segmented steel girder 210, the opening CX of the segmented steel girder 210 is closed to the closed section, and thus the transport or handling process is performed. In addition to the process of constructing the bottom plate in the construction site of the bridge will have a high resistance ability to suppress the torsional deformation of the segmented steel girder 210 by the weight of the bottom plate concrete.
  • the manufacturing method of the box-shaped steel composite girder according to the second embodiment of the present invention prevents the use of excessive amount of steel in the part where the stress acts small in the state of being finally constructed in the bridge with the use of minimal steel.
  • an advantageous effect is obtained in which both workability and economy of maximizing the manufacturing efficiency of the box-shaped composite girder are satisfied.
  • Step 4 When the fabrication of the box-shaped composite girder 200 is completed, as shown in Fig. 23, the box-shaped composite girder 200 manufactured at the factory is transported to the site by the transport means 88 ( S240).
  • the girders used for the long span bridge in recent years is constructed in the form of long girders at the site It must be constructed in the form of transporting and connecting the segment girder manufactured by the company, but it may be difficult to manufacture the steel girder in the field due to the working conditions of the site, and to perform the manufacturing of the girder in the field causes the problem of deteriorating the work efficiency. Therefore, it is more efficient to manufacture the bridge girder by connecting the transported segment girder in the field by manufacturing the segment girder in advance and transporting it to the site.
  • Step 5 Then, as shown in FIG. 24, a plurality of segmented rigid girder 200 conveyed to the construction site of the bridge is longitudinally connected by the connecting plate 260, the length corresponding to the span of the bridge. Produces an integrated girder 200 '(S250).
  • the hole of the connection plate 260 and the hole (211a, 212a, 213a) of the segment steel girder 210 This is done by fastening in a state where many bolts penetrate at the same time. That is, the method for constructing a box-shaped bridge according to the present invention connects the segmented composite girder 200 in the longitudinal direction by only one bolt connection, so that a problem such as discarding the used bolt does not occur.
  • Step 6 Lifting the integrated girder 200 'manufactured as described above with a crane on the bridge device 10a, 20a which is a substructure of the bridge in the form of a simple bridge shown in FIG. 25 or a continuous bridge shown in FIG. Mount it on (S260).
  • the integrated girder 200 ′ may be mounted along the transverse direction of the bridge according to the width of the bridge to be constructed, but may be mounted in two or more rows.
  • the integrated girder 200 ′ will be described with an example of a bridge in which three columns are arranged along the transverse direction.
  • the parent cement girder 290 is formed of a ' ⁇ ' shaped steel girder consisting of a lower flange 291 and a pair of abdomen 292 and the upper flange 293 for closing them, as shown in FIG. Due to the large parent moment acting on the girders located on the piers 20 of the bridge continuous portion, it is possible to effectively resist the tensile stress acting on the upper side of the girders.
  • the compressive stress according to the parent moment acts on the lower edge of the parent cement girders 290, and in order to effectively endure the compressive stress of the lower edge of the neutral shaft of the girder according to the parent cement, the lower flange of the cement cement girder has a cross-sectional reinforcement concrete (295). ) Can be further synthesized.
  • the cross section along cut line G-G and cut line H-H in FIG. 26 is formed the same as or similar to the cross section along cut line G-G and cut line H-H in FIG.
  • Step 7 the second formwork 270 for synthesizing the bottom plate for the passage of the vehicle, etc., on the upper side of the integrated girders 200 'arranged laterally spaced apart.
  • the second formwork 270 includes a formwork 271 for placing the bottom plate concrete between the integrated girders 200 ', an end formwork 273 extending outwardly of the outermost girder in the transverse direction, and an end portion.
  • Located at both ends of the formwork (273) is configured to include a side formwork (272) that defines both ends of the bottom plate concrete.
  • the end of the lower flange 211 protruding from the abdomen 212 of the girder 200 ′ is installed so that the braces 274 are supported at both ends, and the formwork 271 between the clubs 275 located on the braces 274. It is installed to be supported.
  • the length of the copper 275 can be adjusted by the turnbuckle (275a), so that the gap between the formwork 271 and the upper flange 213 of the composite girder 200 so as not to generate a gap between the formwork 271 ) Can be installed.
  • the end formwork 273 is supported below by the triangular-shaped support stand 273a so that it may be supported by the side surface of the outermost girder 200 'in the horizontal direction.
  • Step 8 When the installation of the second formwork 270 for synthesizing the bottom plate is completed, as shown in Figure 27, the reinforcing bar 280 to reinforce the strength of the bottom plate concrete is placed with respect to the entire bottom plate Then, as shown in Figures 28 and 29, by pouring the concrete not hardened in the second formwork 270 to synthesize the bottom plate 250 to the integrated rigid composite girders (200 ') (S280).
  • Step 9 When the bottom plate concrete is cured and synthesized in the girder 200 'in which the bottom plate 250 is integrated, as shown in FIG. 28, the road pavement surface 251 is constructed with asphalt or the like, and the barrier wall 252 To complete the construction of the bridge.
  • the construction method of the box-shaped bridge according to the second embodiment of the present invention as described above can not only obtain all the advantages obtained in the manufacturing method of the box-shaped composite girder 200 through the step 1 to step 3, It is possible to construct a partial bottom plate 240 while reducing the amount of use, and do not have to discard hundreds of bolts interconnecting the segment girder, it is excellent while minimizing the use of steel by a much shorter time and a simple process than conventional An advantageous effect of constructing a bridge having a resistance ability can be obtained.
  • the formwork for synthesizing the partial bottom plate 240 is supported by a copper bar after the partial bottom plate 240 is synthesized
  • it provides a method of manufacturing a box-shaped composite girder using the formwork 320 is permanently synthesized in the composite girder 200 with the partial bottom plate.
  • the bottom formwork 321 filling the upper opening CX of the segmented steel girder 210 and the side formwork 322 defining the side surface of the partial bottom plate 240 to be poured.
  • the reinforcing bar 230 for reinforcing the strength of the partial bottom plate 240 is disposed on the upper side of the bottom formwork 321.
  • the high strength concrete that is not hardened in the formwork 321 may be formed to form a partial bottom plate 240 together with the formwork 321 to produce a box-shaped composite segment girder.
  • the shear connector 214 is arranged between the bottom formwork 321 and the side formwork 322 for firm synthesis of the partial bottom plate 240 and the segmented steel girder 210 to be synthesized. And, the side formwork 322 is removed after the synthesis of the partial bottom plate 240, the bottom formwork 320 is permanently synthesized integrally with the segmented steel girder 210.
  • the manufacturing method of the box-shaped composite girder 300 according to another embodiment of the present invention in synthesizing the partial bottom plate 240 forming the closed portion of the U-shaped segmented steel girder 210, the bottom formwork As the 321 is buried with the partial bottom concrete and utilized as a permanent formwork, the form 220 and the copper 221 can be removed after the partial bottom 240 is synthesized in the segmented steel girder 210. There is no need to obtain an advantageous effect of improving workability.
  • box-shaped rigid girder 300 manufactured as described above, a simple bridge, a continuous bridge, or a continuous bridge using a parent cement girder as shown in FIG. Can be installed.
  • the thin bottom plate 240 of the thin thickness synthesized to the segmented steel girder 210 is the species of the segmented steel girder 210
  • the configuration is different from that of the above-described second embodiment in that it is performed by using both end dies 410 that are fixed in advance in both ends in the direction.
  • both end formwork 410 constitutes a part of the formwork required to synthesize the partial bottom plate 240
  • the formwork defining the side and bottom surface of the partial bottom plate 240 is the second shown in FIG. It is formed in the same manner as in the embodiment.
  • both end formwork 410 is composed of a lower formwork 411 that is fixed to both ends of the segmented steel girder 210, the upper formwork detachable to the lower formwork 411 In the boundary between the lower formwork 411 and the upper formwork 412, holes 411a and 412a through which the exposed reinforcing bars 233 in the longitudinal direction pass through the reinforcing bars 230 that reinforce the strength of the partial bottom plate 240. Each is formed.
  • the lower formwork 411 is fixed to the upper flanges 213 of both ends of the segmented steel girder 210 in advance by welding, and the bottom formwork 220 is formed.
  • the reinforcing bar 230 is laid back so that the rebar 233 exposed in the longitudinal direction from the partial bottom plate 140 is placed in the hole 411a of the lower formwork 231.
  • the holes 411a and 412a are shown as though the exposed rebars 233 pass through one by one, but the exposed rebars 233 in the longitudinal direction are shown. It may be formed by holes passing through several or at a time.
  • the upper formwork 412 is lowered to the lower formwork 411 in a state where the reinforcing bars 233 pass through the holes 411a and 412a formed between the lower formwork 411 and the upper formwork 412.
  • the bolts 413 are fastened and fixed to the formed bolt holes 413a and 413b.
  • the holes 411a and 412a between the lower formwork 411 and the upper formwork 412 through which the exposed rebar 233 penetrate are filled with the filler 233a, and the molds 410, 410, and 412 are not hardened. Do not leak concrete even if it is poured.
  • Both ends formwork 410 provided by such a process is left as it is without removing even after the partial bottom plate 240 is synthesized as shown in FIG.
  • both ends formwork of iron material is firmly supported at both ends, it is possible to effectively suppress the occurrence of cracks or damage to the partial bottom plate.
  • the reinforcing bars reinforcing the partial bottom plate 240 penetrates both ends of the formwork 410 and is connected to the longitudinal direction of the partial bottom plate 240 by the connecting bars 233 in the longitudinal direction. ) Is firmly secured to the later synthesized bottom plate 250 and the pre-synthesized partial bottom plate 240 when the bottom plate of full thickness is poured after being mounted on the piers or shifts for the bridge construction after the longitudinal connection. By connecting also in the longitudinal direction it is possible to more firmly integrated behavior of the partial bottom plate 240 and the bottom plate 250.
  • both end formwork pre-installed in the segmented steel girder 210 may be configured in a form that is separated up and down for the exposure of the reinforcing bar 233, shown in Figure 36
  • both end dies 510 define a longitudinal end of the partial bottom plate 240 as one body, and both end dies 510 are provided with projections 411 protruding in the longitudinal direction, which are later synthesized.
  • the bottom plate 250 and the pre-synthesized partial bottom plate 240 may be connected in the longitudinal direction.

Abstract

La présente invention concerne un procédé de construction d'un pont à poutres-caissons, qui comprend les étapes de : préparation d'une poutre-caisson en acier constituée d'une bride supérieure, d'une bride inférieure et de deux âmes, ainsi que d'une partie centrale dans la direction de la longueur, ouverte sur son côté supérieur et qui a une surface transversale en forme de « U » ; soutien d'une ou plusieurs poutres-caissons en acier sur les paliers du pont d'une structure inférieure de pont qui doivent être séparées à un intervalle prédéfini dans la direction transversale ; montage de premières mousses entre les brides supérieures des poutres-caissons en acier afin de verser du béton pour un tablier de pont de sorte que les sections centrales des poutres-caisson en acier, qui ont les surfaces transversales en forme de « U », forment des sections fermées ; montage de secondes mousses dans les espaces situés entre les brides supérieures des poutres-caissons en acier, séparées à l'intervalle prédéfini dans la direction transversale, et sur les brides supérieures aux positions des poutres les plus en saillie vers l'extérieur parmi les poutres-caissons en acier, de manière à verser du béton pour le tablier du pont ; agencer des barres de fer à enserrer dans le béton du tablier de pont sur les parties supérieures des premières et secondes mousses ; composer le béton des tabliers partiels, qui forment des sections fermées avec les poutres-caissons en acier en forme de « U », par le versement de béton frais sur les premières mousses de manière à couvrir les parties ouvertes exposées dans les centres des poutres-caissons acier, qui ont les surfaces transversales en forme de « U » ; composer le béton du tablier selon une épaisseur prédéfinie sur les secondes mousses et le béton du tablier partiel. Selon l'invention, il est possible de construire un pont ayant une capacité de résistance supérieure, tout en minimisant la quantité d'acier utilisée par le biais d'un procédé plus simple que celui en l'état de la technique.
PCT/KR2010/004489 2010-03-05 2010-07-09 Procédé de fabrication d'une poutre-caisson en acier composite et procédé de fabrication de pont à poutres-caissons l'utilisant WO2011108781A1 (fr)

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KR10-2010-0019898 2010-03-05
KR1020100019898A KR101125479B1 (ko) 2010-03-05 2010-03-05 상자형 교량의 시공 방법
KR10-2010-0020732 2010-03-09
KR1020100020732A KR101024827B1 (ko) 2010-03-09 2010-03-09 상자형 강합성 거더의 제작 방법 및 이를 이용한 상자형 교량의 시공 방법

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CN104452586A (zh) * 2014-12-09 2015-03-25 华北水利水电大学 一种钢桥面铺装结构及铺装方法
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CN104727212A (zh) * 2015-02-27 2015-06-24 郑州大学 不考虑支承偏心距的两种曲线箱梁桥弯矩内力表达方法
CN104846740A (zh) * 2015-03-19 2015-08-19 南通大学 大跨度钢箱梁桥面铺装层材料梯度结构铺装施工方法
CN104929034A (zh) * 2015-06-25 2015-09-23 浙江大学 一种模块化钢-混快速施工小箱梁桥及其施工方法
CN105155401A (zh) * 2015-08-24 2015-12-16 安徽省交通规划设计研究总院股份有限公司 桥梁全体外预应力混凝土节段拼装轻型薄壁箱梁
CN105421210A (zh) * 2015-12-21 2016-03-23 华汇工程设计集团股份有限公司 一种快速拼装的钢箱-预制混凝土板桥梁结构及其施工方法
CN105937204A (zh) * 2016-05-24 2016-09-14 安徽省交通建设有限责任公司 一种大跨度钢箱梁刚度协调式复合桥面铺装层结构及其施工方法
CN106638260A (zh) * 2016-11-17 2017-05-10 西南交通大学 一种组合式箱梁构造及其制造方法
CN106758740A (zh) * 2016-12-07 2017-05-31 中铁第四勘察设计院集团有限公司 一种带独立风嘴的铁路桥梁分离式双箱钢主梁结构
CN109537467A (zh) * 2018-12-18 2019-03-29 中交天津航道局有限公司 一种箱梁预应力施工方法
CN110158454A (zh) * 2019-07-02 2019-08-23 叶锦华 一种用于钢-混组合桥梁的装配式钢-混凝土组合结构的连接件
CN111827117A (zh) * 2020-06-24 2020-10-27 中铁北京工程局集团(天津)工程有限公司 一种钢混组合梁桥面板混凝土浇筑方法
CN112959469A (zh) * 2021-02-22 2021-06-15 安徽省高等级公路工程监理有限公司 一种用于钢混组合梁桥面板预制的整体式组合模板
CN112959469B (zh) * 2021-02-22 2022-04-15 安徽省高等级公路工程监理有限公司 一种用于钢混组合梁桥面板预制的整体式组合模板
CN113818326A (zh) * 2021-09-18 2021-12-21 深圳大学 全装配式nhnr剪力连接的钢-砼组合梁
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