Pi-shaped steel-concrete composite beam precast yard structure
By adopting symmetrical layout and driving track gantry crane system in the bridge prefabricated field, the problems of loading and unloading imbalance and concrete pollution are solved, an efficient and safe construction process is achieved, and construction costs are reduced.
Patent Information
- Application Number
- CN202421879098.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-05
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-08-05
AI Technical Summary
The flow-through layout of the existing bridge prefabricated yard results in busy loading and unloading at one end and idle at the other end. The mold is prone to pollute the lower surface of the steel beam roof slab when pouring concrete, increasing construction costs.
The symmetrical layout of π-shaped steel-concrete composite beam prefabricated field structure is adopted. By setting up two driving tracks and multiple gantry cranes, flexible materials entering and exiting and parallelizing operations are achieved. At the same time, steel beams are used as part of the concrete roof mold to avoid concrete seepage.
It solves the problem of unbalanced loading and unloading, improves operating efficiency and safety, reduces construction costs, effectively prevents concrete pollution, and simplifies subsequent anti-corrosion treatment.
Smart Images
Figure CN223013522U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bridge construction, in particular to a structure of a prefabrication yard for a π-shaped steel-concrete composite beam. Background Art
[0002] In bridge construction, the π-shaped steel-concrete composite beam is prefabricated in a prefabrication yard first, and then the π-shaped steel-concrete composite beam is transported to the bridge pier by a vehicle. The π-shaped steel-concrete composite beam includes a bridge deck of a concrete structure, a left steel beam and a right steel beam. Longitudinal ribs extending longitudinally along the bridge direction are arranged on the lower surface of the bridge deck. The left steel beam and the right steel beam are distributed transversely along the bridge direction 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, 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. The right steel beam includes a right top plate, a right vertical plate and a right bottom plate, 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 existing layout mode of the prefabrication yard is to feed materials from one side, and then, in the inherent thinking mode of an assembly line, from front to back, feed materials at one end, then produce, and output from the other end. The following deficiencies exist in this layout: there will be a phenomenon that the loading and unloading site at one end is busy and needs to queue up while the other end is idle; when the top plate of the π-shaped steel-concrete composite beam is prefabricated according to the existing mold, the mold also wraps the steel beam, which will cause the phenomenon that concrete seeps in and pollutes the lower surfaces of the left and right top plates. When the anti-corrosion treatment is carried out on the lower surface of the top plate in the later stage, the concrete located on the lower surface of the top plate needs to be removed, resulting in an increase in construction cost. Summary of the Utility Model
[0003] The first object of the utility model is to provide a structure of a prefabrication yard for a π-shaped steel-concrete composite beam with a symmetrical layout, which solves the problem that one end is busy and the other end is idle in the existing layout of the prefabrication yard for the π-shaped steel-concrete composite beam with a one-end-in and one-end-out flow type.
[0004] The second object of the utility model is to further provide a structure of a prefabrication yard for a π-shaped steel-concrete composite beam in which the lower surface of the top plate of the steel beam is not easily soiled by concrete during the production process, which solves the problem that the concrete will pollute the lower surface of the top plate when the top plate of the π-shaped steel-concrete composite beam is poured by the existing mold, resulting in an increase in construction cost.
[0005] To achieve the above-mentioned utility model object, the present utility model adopts the following technologies: A prefabrication yard structure for a π-shaped steel-concrete composite beam. The π-shaped steel-concrete composite beam includes a bridge deck of a concrete structure and two steel beams connected to the lower surface of the bridge deck. The two steel beams are distributed along the transverse direction of the bridge and extend along the longitudinal direction of the bridge. It is characterized in that it includes two traveling tracks and at least two gantry cranes that can be movably supported at both ends on the two traveling tracks. The traveling tracks are of a straight-line structure and extend in the left-right direction and are distributed in the front-back direction. Between the two traveling tracks, there are a steel bar binding area, a left π-shaped steel-concrete composite beam manufacturing area, a left steel beam storage area, a left π-shaped steel-concrete composite beam storage area, and a left loading and unloading area arranged in sequence from right to left on the left side of the steel bar binding area, and a right π-shaped steel-concrete composite beam manufacturing area, a right steel beam storage area, a right π-shaped steel-concrete composite beam storage area, and a right loading and unloading area arranged in sequence from left to right on the right side of the steel bar binding area. The steel bar binding area is provided with two awning support tracks, and the two awning support tracks are distributed in the front-back direction and extend in the left-right direction. Both ends of the movable awning can be movably supported on the two awning support tracks. The process of manufacturing the π-shaped steel-concrete composite beam is as follows: The materials for manufacturing the π-shaped steel-concrete composite beam are transported to the left and right loading and unloading areas by trucks. The manufactured π-shaped steel-concrete composite beam is lifted by the gantry crane onto the trucks located in the left and right loading and unloading areas and transported away. The steel beams transported to the left and right loading and unloading areas are transferred to the left and right steel beam storage areas for storage by the gantry crane, and the steel bars are transferred to the left and right steel bar binding areas by the gantry crane. The steel bar framework of the bridge deck is tied in the steel bar binding area. The steel beams located in the steel beam storage area are transferred to the π-shaped steel-concrete composite beam manufacturing area by the gantry crane. Then, the manufacturing mold for the π-shaped steel-concrete composite beam top plate is assembled at the work station where the steel beams are placed. The steel bar framework tied in the steel bar binding area is transferred into the manufacturing mold for the π-shaped steel-concrete composite beam top plate by the gantry crane. Concrete is poured into the manufacturing mold for the π-shaped steel-concrete composite beam top plate. After the concrete is cured, it pours and fixes the steel bar framework and the steel beams, thereby manufacturing the π-shaped steel-concrete composite beam. The manufacturing mold for the π-shaped steel-concrete composite beam top plate is disassembled, and the manufactured π-shaped steel-concrete composite beam is transferred to the left and right π-shaped steel-concrete composite beam storage areas by the gantry crane. Well, the technical solution has two loading and unloading areas, which makes the unloading of the incoming steel beams and the loading of the finished beams (π-shaped steel-concrete composite beams) flexible. It is located at both ends of the prefabrication yard for entry and exit, and the operation is convenient and safe. With the steel bar binding area in the middle and other areas on both sides, parallel operations can be carried out on both sides without interference, and the pouring and combination of the steel beams and the bridge deck can be completed quickly and efficiently.
[0006] Preferably, the left π-shaped steel-concrete composite beam manufacturing area and the right π-shaped steel-concrete composite beam manufacturing area are each provided with a number of support bases for the manufacturing molds of the π-shaped steel-concrete composite beam roof plates distributed in the left-right direction. The support bases for the manufacturing molds of the π-shaped steel-concrete composite beam roof plates include a concrete hardened ground and two rows of concrete protrusions distributed in the left-right direction arranged on the concrete hardened ground. The concrete protrusions in the same row are distributed in the front-back direction. The distance between the two steel beams is equal to the distance between the two rows of concrete protrusions. Steel support seats are poured on the concrete protrusions. A left mold support track is provided on the left side of the two rows of concrete protrusions, a right mold support track is provided on the right side, and an intermediate mold support track is provided between the two rows of concrete protrusions. During use, the two steel beams are placed on the steel support seats on the two rows of concrete protrusions one by one. The left template is supported on the left mold support track, the intermediate template is supported on the intermediate mold support track, and the right template is supported on the right mold support track. It is convenient and reliable to support and fix the mold.
[0007] Preferably, angle steels are poured as edge wraps at the left and right edges of the upper end surface of the concrete protrusions. The steel support seat includes two I-beam sections distributed in the front-back direction and extending in the left-right direction and a number of channel steel sections connecting the I-beams together. The opening directions of the two channel steel sections are opposite, and the channel steel sections and the I-beam sections are welded together. The structural strength is good.
[0008] Preferably, it further includes a manufacturing die for the top plate of the π-shaped steel-concrete composite beam for manufacturing the bridge deck, which is supported on the support base of the manufacturing die for the top plate of the π-shaped steel-concrete composite beam. Longitudinally extending left and right ridges are provided on the lower surface of the bridge deck. The two steel beams are respectively a left steel beam and a right steel beam. The left steel beam includes a left top plate, a left vertical plate, and a left bottom plate, which are connected 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, which are connected in an "I" shape. The right top plate is fixed on the lower surface of the right ridge. The manufacturing die for the top plate of the π-shaped steel-concrete composite beam includes a left die, a middle die, and a right die distributed along the transverse direction of the bridge. The left die includes a left template and a left die base supporting the left template. The left die base is supported on the left die support track. The right die includes a right template and a right die base supporting the right template. The right die base is supported on the right die support track. The middle die includes a middle template and a middle die base supporting the middle template. The middle die base is supported on the middle die support track. The left template, the left top plate, the middle template, the right top plate, and the right template enclose a cavity for pouring the bridge deck. The process of manufacturing the bridge deck is as follows: install the left and right steel beams, assemble the manufacturing die for the top plate of the π-shaped steel-concrete composite beam to form a cavity for the bridge deck, build a steel bar framework in the cavity for the bridge deck, pour concrete into the cavity for the bridge deck. After the concrete solidifies, it pours and holds the steel bars to form the bridge deck. Remove the manufacturing method for the top plate of the π-shaped steel-concrete composite beam, leaving the bridge deck, the left steel beam, and the right steel beam to form the π-shaped steel-concrete composite beam. The steel beam can be used as part of the die, and the concrete will not flow to the lower surface of the top plate. The second invention objective is achieved.
[0009] Preferably, the left side surface, the right side surface of the left ridge, the left side surface, and the right side surface of the right ridge are all inclined downward slopes. The middle template includes a middle support plate, a left support plate hinged to the middle support plate at the right end, and a right support plate hinged to the middle support plate at the left end. The middle support plate is fixed to the upper end of the middle die base. 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 die base. The left support plate is used to form the right side surface of the left ridge. 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 die base. The right support plate is used to form the left side surface of the right ridge. During demoulding, 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. This makes the demoulding more labor-saving and convenient.
[0010] Preferably, the intermediate die base frame includes a bracket, a plurality of lifting cylinders supporting the bracket, and a top frame disposed on the bracket. The middle supporting plate 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 supporting plate and the right supporting plate are disengaged, the lifting cylinder contracts to disengage the middle supporting plate. Further improving the convenience and labor-saving property during demolding.
[0011] Preferably, when the left supporting plate is connected to the left top plate, the left top plate abuts against the upper surface of the left supporting plate. When the right supporting plate is connected to the right top plate, the right top plate abuts against the upper surface of the right 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.
[0012] 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.
[0013] 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.
[0014] Preferably, the height of the gantry crane is higher than the height of the mobile awning. Enabling the gantry to be commonly used in the areas on both sides of the steel bar binding area.
[0015] Beneficial effects: In this technical solution, there are two loading and unloading areas. The unloading of the steel beams when they enter the site and the loading of the finished beams (π-shaped steel-concrete composite beams) when they leave the site are flexible. They are located at both ends of the prefabrication yard for entry and exit, and the operation is convenient and safe. With the steel bar binding area in the middle and other areas on both sides, parallel operations can be carried out on both sides without interference, quickly and efficiently completing the pouring and combination of the steel beams and the bridge deck. The reliability during hoisting is good, the hoisting cost is low, and the damage to the π-shaped steel-concrete composite beam is small. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a top view schematic diagram of the present utility model;
[0017] Figure 2 It is Figure 1 a partial enlarged schematic diagram at C of
[0018] Figure 3 is Figure 2 the schematic diagram of the D-D sectional view;
[0019] Figure 4 is the schematic diagram of the production mold for the top plate of the π-shaped steel-concrete composite beam;
[0020] Figure 5 is Figure 4 the partial enlarged schematic diagram at position A of
[0021] 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 formwork 12, left mold chassis 13, left middle support plate 14, left baffle 15, right support plate 16, right side formwork 18, right mold chassis 19, right middle support plate 20, right baffle 21, left support plate 22, middle formwork 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, traveling track 44, gantry crane 45, steel bar binding area 46, left π-shaped steel-concrete composite beam production area 47, left steel beam storage area 48, left π-shaped steel-concrete composite beam storage area 49, left loading and unloading area 50, right π-shaped steel-concrete composite beam production area 51, right steel beam storage area 52, right π-shaped steel-concrete composite beam storage area 53, right loading and unloading area 54, awning support track 55, movable awning 56, support base for the production mold of the π-shaped steel-concrete composite beam top plate 57, concrete hardened ground 58, concrete convex platform 59, steel support base 60, left mold support track 61, right mold support track 62, middle mold support track 63, angle steel 64, I-beam section 65, channel steel section 66. Specific embodiments
[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0023] See Figures 1 to 5, a prefabrication yard structure for a π-shaped steel-concrete composite beam. The π-shaped steel-concrete composite beam includes a deck slab 1 of 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 deck slab. The left and right steel beams 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, 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 longitudinal rib. 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, 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 longitudinal rib. The left side surface, right side surface, left side surface and right side surface of the right longitudinal rib of the left longitudinal rib are all inclined downward slopes.
[0024] It includes two traveling tracks 44, five gantry cranes 45 whose two ends are movably supported on the two traveling tracks, and several π-shaped steel-concrete composite beam top plate manufacturing molds. The traveling tracks are of a straight structure, extending in the left-right direction and distributed in the front-back direction. There is a steel bar binding area 46 between the two traveling tracks, a left π-shaped steel-concrete composite beam manufacturing area 47, a left steel beam storage area 48, a left π-shaped steel-concrete composite beam storage area 49, and a left loading and unloading area 50 arranged in sequence from right to left on the left side of the steel bar binding area, and a right π-shaped steel-concrete composite beam manufacturing area 51, a right steel beam storage area 52, a right π-shaped steel-concrete composite beam storage area 53, and a right loading and unloading area 54 arranged in sequence from left to right on the right side of the steel bar binding area. The steel bar binding area is provided with two awning support tracks 55, and the two awning support tracks extend in the left-right direction and are distributed in the front-back direction. The two ends of the movable awning 56 are movably supported on the two awning support tracks. The process of manufacturing the π-shaped steel-concrete composite beam is as follows: The materials for manufacturing the π-shaped steel-concrete composite beam are transported to the left and right loading and unloading areas by trucks. The manufactured π-shaped steel-concrete composite beam is lifted by the gantry crane onto the trucks located in the left and right loading and unloading areas and transported away. The steel beams transported to the left and right loading and unloading areas are transferred to the left and right steel beam storage areas for storage by the gantry crane, and the steel bars are transferred to the left and right steel bar binding areas by the gantry crane. The steel bar framework of the bridge deck is tied in the steel bar binding area. The steel beams located in the steel beam storage area are transferred to the π-shaped steel-concrete composite beam manufacturing area by the gantry crane. Then, the π-shaped steel-concrete composite beam top plate manufacturing mold is assembled at the station where the steel beam is placed. The steel bar framework tied in the steel bar binding area is transferred into the π-shaped steel-concrete composite beam top plate manufacturing mold by the gantry crane. Concrete is poured into the π-shaped steel-concrete composite beam top plate manufacturing mold. After the concrete solidifies, it pours and fixes the steel bar framework and the steel beam, thus manufacturing the π-shaped steel-concrete composite beam. The π-shaped steel-concrete composite beam top plate manufacturing mold is disassembled, and the manufactured π-shaped steel-concrete composite beam is transferred to the left and right π-shaped steel-concrete composite beam storage areas by the gantry crane. Each of the left π-shaped steel-concrete composite beam manufacturing area and the right π-shaped steel-concrete composite beam manufacturing area is provided with several π-shaped steel-concrete composite beam top plate manufacturing mold support bases 57 distributed in the left-right direction. One π-shaped steel-concrete composite beam top plate manufacturing mold support base supports two steel beams and a set of π-shaped steel-concrete composite beam top plate manufacturing molds, thus manufacturing one π-shaped steel-concrete composite beam.The support base of the production mold for the top plate of the π-shaped steel-concrete composite beam includes a concrete hardened ground 58 and two rows of concrete convex platforms 59 arranged in the left-right direction on the concrete hardened ground. The concrete convex platforms in the same row are arranged in the front-back direction. The distance between the two steel beams is equal to the distance between the two rows of concrete convex platforms. Steel support seats 60 are cast on the concrete convex platforms. A left-side mold support track 61 is provided on the left side of the two rows of concrete convex platforms, and a right-side mold support track 62 is provided on the right side. An intermediate mold support track 63 is provided between the two rows of concrete convex platforms. During use, the two steel beams (i.e., the left steel beam and the right steel beam) are respectively placed on the steel support seats on the two rows of concrete convex platforms. The left-side formwork is supported on the left-side mold support track, the intermediate formwork is supported on the intermediate mold support track, and the right-side formwork is supported on the right-side mold support track. Angle steels 64 are cast on the left and right edges of the upper end surface of the concrete convex platforms as edge wraps. The steel support seat includes two I-beam sections 65 extending in the left-right direction and distributed in the front-back direction, and several channel steel sections 66 connecting the I-beams together. The opening directions of the two channel steel sections are opposite, and the channel steel sections and the I-beam sections are welded together.
[0025] The production mold for the top plate of the π-shaped steel-concrete composite beam 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, 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 bottom frame 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 right mold includes a right template 18 and a right mold bottom frame 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 middle mold includes a middle template 24 and a middle mold bottom frame 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 bottom frame. 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 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 30, 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. 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.
[0026] The process of manufacturing the bridge top plate is as follows: install the left steel beam and the right steel beam, assemble the production method of the π-shaped steel-concrete composite beam top plate 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, pour and fix the steel bars to form the bridge deck. Then, remove the production method of the π-shaped steel-concrete composite beam top plate, leaving the bridge deck, the left steel beam, and the right steel beam to form the π-shaped steel-concrete composite beam. During demolding, first, contract the left push-pull cylinder to disengage the left support plate and contract the right push-pull cylinder to disengage the right support plate.
[0027] It should be noted that in this text, 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 terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the process, method, article or device comprising said element.
[0028] Although embodiments of the present invention 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 principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A π-shaped steel-concrete composite beam prefabrication site structure, wherein the π-shaped steel-concrete composite beam comprises a bridge deck of a concrete structure and two steel beams connected to the lower surface of the bridge deck, wherein the two steel beams are distributed in the transverse direction of the bridge and extend in the longitudinal direction of the bridge, and wherein: It includes two traveling tracks and at least two gantry cranes whose two ends are movably supported on the two traveling tracks. The traveling tracks are a straight structure, extending in the left-right direction and distributed in the front-back direction. A reinforcement binding area is provided between the two traveling tracks, and a left π-shaped steel-concrete composite beam manufacturing area, a left steel beam storage area, a left π-shaped steel-concrete composite beam storage area and a left loading and unloading area are arranged in sequence from right to left on the left side of the reinforcement binding area, and a right π-shaped steel-concrete composite beam manufacturing area, a right steel beam storage area, a right π-shaped steel-concrete composite beam storage area and a right loading and unloading area are arranged in sequence from left to right on the right side of the reinforcement binding area. Two canopy support tracks are provided in the reinforcement binding area, and the two canopy support tracks are distributed in the front-back direction and extend in the left-right direction. Both ends of the movable canopy are movably supported on the two canopy support tracks.
2. The π-shaped steel-concrete composite beam prefabrication site structure according to claim 1 is characterized in that: The left π-shaped steel-concrete composite beam manufacturing area and the right π-shaped steel-concrete composite beam manufacturing area are each provided with a plurality of π-shaped steel-concrete composite beam top plate manufacturing mold support bases distributed along the left-right direction, the π-shaped steel-concrete composite beam top plate manufacturing mold support base comprises a concrete hardened ground and two rows of concrete bosses arranged on the concrete hardened ground and distributed along the left-right direction, the concrete bosses in the same row of concrete bosses are distributed along the front-back direction, the distance between the two steel beams is equal to the distance between the two rows of concrete bosses, a steel support seat is cast on the concrete bosses, a left-side mold support track is provided on the left side of the two rows of concrete bosses, a right-side mold support track is provided on the right side, and a middle mold support track is provided between the two rows of concrete bosses.
3. The π-shaped steel-concrete composite beam prefabrication site structure according to claim 2 is characterized in that: The left and right edges of the upper end surface of the concrete boss are cast with angle steel as edging, and the steel support seat includes two I-beam sections distributed along the front-to-back direction and extending in the left and right directions and a plurality of channel steel sections connecting the I-beams together, the opening directions of the two channel steel sections are opposite, and the channel steel sections and the I-beam sections are welded together.
4. A π-shaped steel-concrete composite beam prefabrication site structure according to claim 2 or 3, characterized in that: The bridge deck is also provided with a π-shaped steel-concrete composite beam top plate manufacturing mold for manufacturing a bridge deck supported on a supporting base of the π-shaped steel-concrete composite beam top plate manufacturing mold, wherein the 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, and the two steel beams are a left steel beam and a right steel beam respectively, and the left steel beam comprises a left top plate, a left vertical plate and a left bottom plate, and the left top plate, the left vertical plate and the left bottom plate are connected together in an "I" shape, and the left top plate is fixed on the lower surface of the left convex strip, and the right steel beam comprises a right top plate, a right vertical plate and a right bottom plate, and the right top plate, the right vertical plate and the right bottom plate are connected together in an "I" shape, and the right top plate is fixed on the lower surface of the right convex strip, and the π-shaped The mold for making the top slab of the steel-concrete composite beam includes a left mold, a middle mold and a right mold distributed along the transverse direction of the bridge, the left mold includes a left template and a left mold base supporting the left template, the left mold base is supported on the left mold support track, the right mold includes a right template and a right mold base supporting the right template, the right mold base is supported on the right mold support track, the middle mold includes a middle template and a middle mold base supporting the middle template, the middle mold base is supported on the middle mold support track, the left template, left top slab, middle template, right top slab and right template surround a bridge deck cavity for casting the bridge deck.
5. The π-shaped steel-concrete composite beam prefabrication site structure according to claim 4 is 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.
6. The π-shaped steel-concrete composite beam prefabrication site structure according to claim 5 is 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.
7. The π-shaped steel-concrete composite beam prefabrication site structure according to claim 5 is 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.
8. The π-shaped steel-concrete composite beam prefabrication site structure according to claim 5 is 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.
9. The π-shaped steel-concrete composite beam prefabrication site structure according to claim 8 is 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.
10. A π-shaped steel-concrete composite beam prefabrication site structure according to claim 1, 2 or 3, characterized in that: The height of the gantry crane is higher than the height of the movable canopy.