Pi-shaped steel-concrete composite beam top plate manufacturing die

Abstract

The utility model provides a Pi-shaped steel-concrete composite beam top plate manufacturing die which comprises a left side die, a middle die and a right side die which are distributed in the transverse bridge direction, a left vertical plate is located between the left side die and the middle die, and a right vertical plate is located between the right side die and the middle die. The left side mold comprises a left side mold plate and a left mold bottom frame for supporting the left side mold plate, the right side mold comprises a right side mold plate and a right mold bottom frame for supporting the right side mold plate, and the middle mold comprises a middle mold plate and a middle mold bottom frame for supporting the middle mold plate; the left side formwork, the left top plate, the middle formwork, the right top plate and the right side formwork define a bridge deck slab cavity for pouring the bridge deck slab. According to the manufacturing die for the top plate of the inverted-U-shaped steel-concrete composite beam, concrete is not prone to smudging the lower surface of the top plate of the steel beam, and the problem that when an existing die is used for pouring the top plate of the inverted-U-shaped steel-concrete composite beam, the concrete can pollute the lower surface of the top plate, and consequently construction cost is increased is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge construction, in particular to a manufacturing die for the top plate of a U-shaped steel-concrete composite beam. Background Technique

[0002] In bridge construction, a U-shaped steel-concrete composite beam is prefabricated and then hoisted onto a bridge pier. The U-shaped steel-concrete composite beam includes a bridge deck of a concrete structure, a left steel beam and a right steel beam. Longitudinally extending left and right ridges are provided on the lower surface of the bridge deck. The left and right steel beams are distributed transversely to the bridge and extend longitudinally. The left steel beam includes a left top plate, a left vertical plate and a left bottom plate. The left top plate, the left vertical plate and the left bottom plate are connected together in an "I" shape. The left top plate is fixed on the lower surface of the left ridge. The right steel beam includes a right top plate, a right vertical plate and a right bottom plate. The right top plate, the right vertical plate and the right bottom plate are connected together in an "I" shape. The right top plate is fixed on the lower surface of the right ridge. For the existing prefabricated U-shaped steel-concrete composite beam top plate, the die also wraps the steel beam, which may cause the phenomenon that concrete seeps in and pollutes the lower surfaces of the left and right top plates. When performing anti-corrosion treatment on the lower surface of the top plate in the later stage, it is necessary to remove the concrete located on the lower surface of the top plate, resulting in an increase in construction costs. Content of the Utility Model

[0003] The utility model aims to provide a manufacturing die for the top plate of a U-shaped steel-concrete composite beam, on which the lower surface of the top plate is not easily soiled by concrete, and solves the problem that when the existing die is used to pour the top plate of the U-shaped steel-concrete composite beam, the concrete will pollute the lower surface of the top plate, resulting in an increase in construction costs.

[0004] To achieve the above-mentioned utility model purpose, the present utility model adopts the following technology: A U-shaped steel-concrete composite beam top plate manufacturing mold. The U-shaped steel-concrete composite beam includes a bridge deck of concrete structure, a left steel beam and a right steel beam. On the lower surface of the bridge deck, there are left and right ribs extending longitudinally along the bridge axis. The left and right steel beams are distributed transversely along the bridge axis and extend longitudinally. The left steel beam includes a left top plate, a left vertical plate and a left bottom plate, and the left top plate, left vertical plate and left bottom plate are connected together in an "I" shape. The left top plate is fixed on the lower surface of the left rib. The right steel beam includes a right top plate, a right vertical plate and a right bottom plate, and the right top plate, right vertical plate and right bottom plate are connected together in an "I" shape. The right top plate is fixed on the lower surface of the right rib. It is characterized in that it includes a left mold, a middle mold and a right mold distributed transversely. The left vertical plate is located between the left mold and the middle mold, and the right vertical plate is located between the right mold and the middle mold. The left mold includes a left template and a left mold bottom frame supporting the left template. The right mold includes a right template and a right mold bottom frame supporting the right template. The middle mold includes a middle template and a middle mold bottom frame supporting the middle template. The left template, left top plate, middle template, right top plate and right template enclose a bridge deck cavity for pouring the bridge deck. The process of manufacturing the bridge top plate is as follows: install the left and right steel beams, assemble the U-shaped steel-concrete composite beam top plate manufacturing mold to form the bridge deck cavity, build a steel bar framework in the bridge deck cavity, pour concrete into the bridge deck cavity, and after the concrete solidifies, it pours and fixes the steel bars to form the bridge deck. Then remove the U-shaped steel-concrete composite beam top plate manufacturing mold, leaving the bridge deck, left steel beam and right steel beam to form the U-shaped steel-concrete composite beam. The steel beam can be utilized as a part of the mold.

[0005] Preferably, the left side surface of the left rib, the right side surface of the left rib, the left side surface of the right rib and the right side surface of the right rib are all inclined downward slopes. The middle template includes a middle support plate, a left support plate hinged to the right end of the middle support plate and a right support plate hinged to the left end of the middle support plate. The middle support plate is fixed at the upper end of the middle mold bottom frame. The left end of the left support plate is hinged to the upper end of the left push-pull cylinder, and the lower end of the left push-pull cylinder is hinged to the middle mold bottom frame. The left support plate is used to form the right side surface of the left rib. The right end of the right support plate is hinged to the upper end of the right push-pull cylinder, and the lower end of the right push-pull cylinder is hinged to the middle mold bottom frame. The right support plate is used to form the left side surface of the right rib. During demolding, first, the left support plate is disengaged by the contraction of the left push-pull cylinder and the right support plate is disengaged by the contraction of the right push-pull cylinder, making the demolding more labor-saving and convenient.

[0006] Preferably, the intermediate mold chassis includes a bracket, a plurality of lifting cylinders supporting the bracket, and a top frame disposed on the bracket. The middle platen is fixed to the upper end of the top frame. The lower ends of the left push-pull cylinder and the right push-pull cylinder are both hinged to the top frame or the bracket. During the demolding process, after the left platen and the right platen are disengaged, the lifting cylinder contracts to disengage the middle platen. Further improving the convenience and labor-saving property during demolding.

[0007] Preferably, when the left platen is connected to the left top plate, the left top plate abuts against the upper surface of the left platen. When the right platen is connected to the right top plate, the right top plate abuts against the upper surface of the right platen. It can increase the area of the bridge deck wrapping the left bottom plate and the right top plate, so that the amount of anti-corrosion treatment for the left and right steel beams in the follow-up is small. Reducing the construction cost.

[0008] Preferably, the left side formwork includes a left middle supporting plate, a left baffle connected to the left end of the left middle supporting plate, and a right supporting plate connected to the right end of the left middle supporting plate. The right supporting plate is used to form the left side surface of the left convex strip. The right side formwork includes a right middle supporting plate, a right baffle connected to the right end of the right middle supporting plate, and a left supporting plate connected to the left end of the right middle supporting plate. The left supporting plate is used to form the right side surface of the right convex strip.

[0009] Preferably, when the right supporting plate is connected to the left top plate, the left top plate abuts against the upper surface of the right supporting plate. When the left supporting plate is connected to the right top plate, the right top plate abuts against the upper surface of the left supporting plate. It can increase the area of the bridge deck wrapping the left bottom plate and the right top plate, so that the amount of anti-corrosion treatment for the left and right steel beams in the follow-up is small. Reducing the construction cost.

[0010] Preferably, the left side mold further includes a left side slide rail and a left telescopic mechanism. The right end of the left side slide rail is higher than the left end. The left mold chassis is slidably connected to the left side slide rail. The left telescopic mechanism is used to drive the left mold chassis to move on the left side slide rail. The right side mold further includes a right side slide rail and a right telescopic mechanism. The left end of the right side slide rail is higher than the right end. The right mold chassis is slidably connected to the right side slide rail. The right telescopic mechanism is used to drive the right mold chassis to move on the right side slide rail. During demolding, the left and right side molds are tilted and moved through the expansion and contraction of the telescopic mechanism to achieve disengagement. Realizing oblique downward mold opening, thereby reducing the impact on the bridge deck during mold opening and making the mold opening more labor-saving.

[0011] Preferably, the left telescopic mechanism is a left oil cylinder. The left bottom plate is supported on the left chassis. One end of the left oil cylinder is hinged to the left mold chassis, and the other end is hinged to the left chassis. The right telescopic mechanism is a right oil cylinder. The right bottom plate is supported on the right chassis. One end of the right oil cylinder is hinged to the right mold chassis, and the other end is hinged to the right chassis. The structure is simple and practical.

[0012] Preferably, a "T"-shaped left sliding groove is provided at the lower end of the left mold chassis. The left slide rail includes a left slide rail part slide plate and a middle left slide rail connecting plate connected to the lower surface of the left slide rail part slide plate. The left slide rail part slide plate is inserted into the left sliding groove and slidably and hooked together with the left sliding groove. A "T"-shaped right sliding groove is provided at the lower end of the right mold chassis. The right slide rail includes a right slide rail part slide plate and a middle right slide rail connecting plate connected to the lower surface of the right slide rail part slide plate. The right slide rail part slide plate is inserted into the right sliding groove and slidably and hooked together with the right sliding groove. It can improve the reliability during sliding and prevent derailment.

[0013] Beneficial effects: Good reliability during hoisting, low hoisting cost, and less damage to the U-shaped steel-concrete composite beam. Description of the Drawings

[0014] Figure 1 It is a schematic diagram of the present invention;

[0015] Figure 2 is Figure 1 a partial enlarged schematic diagram of point A of

[0016] Figure 3 It is a schematic diagram of the second embodiment of the present invention;

[0017] Figure 4 is Figure 3 a partial enlarged schematic diagram of point B of

[0018] In the figure: bridge deck 1, left steel beam 2, right steel beam 3, left convex strip 4, right convex strip 5, left top plate 6, left vertical plate 7, left bottom plate 8, right top plate 9, right vertical plate 10, right bottom plate 11, left side form 12, left mold chassis 13, left middle support plate 14, left baffle 15, right support plate 16, left support plate 22, right chassis 23, right side form 18, right mold chassis 19, right middle support plate 20, right baffle 21, left support plate 22, right chassis 23, middle form 24, middle mold chassis 25, middle support plate 26, left support plate 27, right support plate 28, left push-pull cylinder 29, right push-pull cylinder 30, bracket 31, lifting cylinder 32, top frame 33, left slide rail 34, left telescopic mechanism 35, left sliding groove 36, left slide rail part slide plate 37, left slide rail connecting plate 38, right telescopic mechanism 39, right sliding groove 40, right slide rail part slide plate 41, right slide rail connecting plate 42, right slide rail 43. Detailed implementation mode

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0020] Embodiment 1, see Figure 1 and Figure 2 , a manufacturing mold for the top plate of a π-shaped steel-concrete composite beam. The π-shaped steel-concrete composite beam includes a bridge deck 1 of a concrete structure, a left steel beam 2 and a right steel beam 3. Longitudinal ribs 4 and 5 extending longitudinally along the bridge are provided on the lower surface of the bridge deck. The left steel beam and the right steel beam are distributed transversely along the bridge and extend longitudinally. The left steel beam includes a left top plate 6, a left vertical plate 7 and a left bottom plate 8, and the left top plate, the left vertical plate and the left bottom plate are connected together in an "I" shape. The left top plate is fixed on the lower surface of the left rib, and the right steel beam includes a right top plate 9, a right vertical plate 10 and a right bottom plate 11, and the right top plate, the right vertical plate and the right bottom plate are connected together in an "I" shape. The right top plate is fixed on the lower surface of the right rib. The left side surface, the right side surface of the left rib, the left side surface and the right side surface of the right rib are all inclined downward slopes.

[0021] It includes a left mold, a middle mold, and a right mold distributed along the transverse bridge direction. The left vertical plate is located between the left mold and the middle mold, and the right vertical plate is located between the right mold and the middle mold. The left mold includes a left template 12 and a left mold chassis 13 that supports the left template. The left template includes a left middle support plate 14, a left baffle 15 connected to the left end of the left middle support plate, and a right support plate 16 connected to the right end of the left middle support plate. The right support plate is used to form the left side surface of the left rib. When the right support plate is connected to the left top plate, the left top plate abuts against the upper surface of the right support plate. The left bottom plate is supported on the left chassis 17. The right mold includes a right template 18 and a right mold chassis 19 that supports the right template. The right template includes a right middle support plate 20, a right baffle 21 connected to the right end of the right middle support plate, and a left support plate 22 connected to the left end of the right middle support plate. The left support plate is used to form the right side surface of the right rib. When the left support plate is connected to the right top plate, the right top plate abuts against the upper surface of the left support plate. The right bottom plate is supported on the right chassis 23. The middle mold includes a middle template 24 and a middle mold chassis 25 that supports the middle template. The middle template includes a middle support plate 26, a left support plate 27 whose right end is hinged to the middle support plate, and a right support plate 28 whose left end is hinged to the middle support plate. The middle support plate is fixed to the upper end of the middle mold chassis. The left end of the left support plate is hinged to the upper end of the left push-pull cylinder 29, and the lower end of the left push-pull cylinder is hinged to the middle mold chassis. The left support plate is used to form the right side surface of the left rib. The right end of the right support plate is hinged to the upper end of the right push-pull cylinder 30, and the lower end of the right push-pull cylinder is hinged to the middle mold chassis. The right support plate is used to form the left side surface of the right rib. The left template, the left top plate, the middle template, the right top plate, and the right template enclose a bridge deck cavity for pouring the bridge deck. When the left support plate is connected to the left top plate, the left top plate abuts against the upper surface of the left support plate. When the right support plate is connected to the right top plate, the right top plate abuts against the upper surface of the right support plate.

[0022] The process of manufacturing the bridge top plate is as follows: install the left steel beam and the right steel beam, assemble the U-shaped steel-concrete composite beam top plate manufacturing mold to form a bridge deck cavity, build a steel bar framework in the bridge deck cavity, pour concrete into the bridge deck cavity, and after the concrete solidifies, it pours and holds the steel bars to form the bridge deck. Then, remove the U-shaped steel-concrete composite beam top plate manufacturing mold, leaving the bridge deck, the left steel beam, and the right steel beam to form the U-shaped steel-concrete composite beam. During demolding, first, the left support plate is disengaged by the contraction of the left push-pull cylinder and the right support plate is disengaged by the contraction of the right push-pull cylinder.

[0023] Embodiment 2 is different from Embodiment 1 in that:

[0024] See Figure 3 and Figure 4, the intermediate mold base frame includes a bracket 31, several lifting cylinders 32 that support the bracket, and a top frame 33 provided on the bracket. The middle platen is fixed to the upper end of the top frame. The lower ends of the left push-pull cylinder and the right push-pull cylinder are both hinged to the top frame or the bracket. During the demolding process, after the left platen and the right platen are disengaged, the lifting cylinders contract to disengage the middle platen. The left mold further includes a left slide rail 34 and a left telescopic mechanism 35. The right end of the left slide rail is higher than the left end. The left mold base frame is slidably connected to the left slide rail. Specifically, a "T"-shaped left chute 36 is provided at the lower end of the left mold base frame. The left slide rail includes a left slide rail part slide plate 37 and a middle left slide rail connecting plate 38 connected to the lower surface of the left slide rail part slide plate. The left slide rail part slide plate is inserted into the left chute and slides and is hooked together with the left chute. The left telescopic mechanism is used to drive the left mold base frame to move on the left slide rail. Specifically, the left telescopic mechanism is a left oil cylinder. One end of the left oil cylinder is hinged to the left mold base frame, and the other end is hinged to the left base frame. The right mold further includes a right slide rail 43 and a right telescopic mechanism 39. The left end of the right slide rail is higher than the right end. The right mold base frame is slidably connected to the right slide rail. Specifically, a "T"-shaped right chute 40 is provided at the lower end of the right mold base frame. The right slide rail includes a right slide rail part slide plate 41 and a middle right slide rail connecting plate 42 connected to the lower surface of the right slide rail part slide plate. The right slide rail part slide plate is inserted into the right chute and slides and is hooked together with the right chute. The right telescopic mechanism is used to drive the right mold base frame to move on the right slide rail. Specifically, the right telescopic mechanism is a right oil cylinder. One end of the right oil cylinder is hinged to the right mold base frame, and the other end is hinged to the right base frame.

[0025] During demolding, the left and right molds are tilted and moved by the expansion and contraction of the telescopic mechanism to achieve disengagement.

[0026] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0027] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A mold for making a top plate of a v-shaped steel-concrete composite beam, the v-shaped steel-concrete composite beam comprises a bridge deck of a concrete structure, a left steel beam and a right steel beam, a lower surface of the bridge deck is provided with a left convex strip and a right convex strip extending in the longitudinal direction of the bridge, the left steel beam and the right steel beam are distributed in the transverse direction of the bridge and extend in the longitudinal direction of the bridge, the left steel beam comprises a left top plate, a left vertical plate and a left bottom plate, the left top plate, the left vertical plate and the left bottom plate are connected together in an "I" shape, the left top plate is fixed on the lower surface of the left convex strip, the right steel beam comprises a right top plate, a right vertical plate and a right bottom plate, the right top plate, the right vertical plate and the right bottom plate are connected together in an "I" shape, the right top plate is fixed on the lower surface of the right convex strip, characterized in that It includes a left mold, a middle mold and a right mold distributed along the transverse direction of the bridge, the left vertical plate is located between the left mold and the middle mold, the right vertical plate is located between the right mold and the middle mold, the left mold includes a left template and a left mold base supporting the left template, the right mold includes a right template and a right mold base supporting the right template, the middle mold includes a middle template and a middle mold base supporting the middle template, the left template, left top plate, middle template, right top plate and right template surround a bridge deck cavity for casting the bridge deck.

2. The mold for manufacturing the top plate of a steel-concrete composite beam according to claim 1, characterized in that: The left side surface of the left convex strip, the right side surface of the left convex strip, the left side surface of the right convex strip and the right side surface of the right convex strip are all downwardly inclined surfaces. The intermediate template includes a middle support plate, a left support plate whose right end is hinged to the middle support plate, and a right support plate whose left end is hinged to the middle support plate. The middle support plate is fixed to the upper end of the intermediate mold base frame, the left end of the left support plate is hinged to the upper end of the left push-pull cylinder, and the lower end of the left push-pull cylinder is hinged to the intermediate mold base frame. The left support plate is used to form the right side surface of the left convex strip, the right end of the right support plate is hinged to the upper end of the right push-pull cylinder, and the lower end of the right push-pull cylinder is hinged to the intermediate mold base frame, and the right support plate is used to form the left side surface of the right convex strip.

3. The mold for manufacturing the top plate of a steel-concrete composite beam according to claim 2, characterized in that: The intermediate mold chassis includes a bracket, a plurality of lifting cylinders supporting the bracket and a top frame arranged on the bracket, the middle support plate is fixed on the upper end of the top frame, and the lower ends of the left push-pull cylinder and the right push-pull cylinder are hinged on the top frame or the bracket.

4. A mold for manufacturing the top plate of a steel-concrete composite beam according to claim 2 or 3, characterized in that: When the left support plate is connected to the left top plate, the left top plate abuts against the upper surface of the left support plate, and when the right support plate is connected to the right top plate, the right top plate abuts against the upper surface of the right support plate.

5. A mold for manufacturing the top plate of a steel-concrete composite beam according to claim 2 or 3, characterized in that: The left side template includes a left middle supporting plate, a left baffle plate connected to the left end of the left middle supporting plate, and a right supporting plate connected to the right end of the left middle supporting plate, and the right supporting plate is used to form the left side surface of the left convex strip; the right side template includes a right middle supporting plate, a right baffle plate connected to the right end of the right middle supporting plate, and a left supporting plate connected to the left end of the right middle supporting plate, and the left supporting plate is used to form the right side surface of the right convex strip.

6. The mold for manufacturing the top plate of a steel-concrete composite beam according to claim 5, characterized in that: When the right supporting plate is connected to the left top plate, the left top plate abuts against the upper surface of the right supporting plate; when the left supporting plate is connected to the right top plate, the right top plate abuts against the upper surface of the left supporting plate.

7. The mold for manufacturing the top plate of a steel-concrete composite beam according to claim 6, characterized in that: The left mold also includes a left slide rail and a left telescopic mechanism, the right end of the left slide rail is higher than the left end, the left mold base is slidably connected to the left slide rail, and the left telescopic mechanism is used to drive the left mold base to move on the left slide rail; the right mold also includes a right slide rail and a right telescopic mechanism, the left end of the right slide rail is higher than the right end, the right mold base is slidably connected to the right slide rail, and the right telescopic mechanism is used to drive the right mold base to move on the right slide rail.

8. The mold for manufacturing the top plate of a steel-concrete composite beam according to claim 7, characterized in that: The left telescopic mechanism is a left oil cylinder, the left bottom plate is supported on the left base frame, one end of the left oil cylinder is hinged to the left mold base frame, and the other end is hinged to the left base frame; the right telescopic mechanism is a right oil cylinder, the right bottom plate is supported on the right base frame, one end of the right oil cylinder is hinged to the right mold base frame, and the other end is hinged to the right base frame.

9. The mold for manufacturing the top plate of a steel-concrete composite beam according to claim 7, characterized in that: A "T"-shaped left slide groove is provided at the lower end of the left mold chassis, and the left side slide rail includes a left slide rail portion slide plate and a left slide rail connecting plate connected to the middle of the lower surface of the left slide rail portion slide plate, and the left slide rail portion slide plate is inserted into the left slide groove and slides with the left slide groove and is hooked together; a "T"-shaped right slide groove is provided at the lower end of the right mold chassis, and the right side slide rail includes a right slide rail portion slide plate and a right slide rail connecting plate connected to the middle of the lower surface of the right slide rail portion slide plate, and the right slide rail portion slide plate is inserted into the right slide groove and slides with the right slide groove and is hooked together.

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