UHPC prefabricated vehicle shed

Abstract

The utility model discloses a UHPC (Ultra High Performance Concrete) prefabricated vehicle shed, which comprises a UHPC cantilever frame and roof panels, the roof panels are close to each other, the joints are sealed, two mutually close longitudinal edge beams of every two adjacent roof panels are jointly placed on the same cantilever beam, and each transverse rib of each roof panel is clamped into a corresponding notch of the placed cantilever beam; a part of the notch of each cantilever beam is clamped with an upper connecting piece, the side wall of the n-shaped bayonet of the upper connecting piece is welded with the clamped cantilever beam connecting rib, and the left flange part and the right flange part of the upper connecting piece protrude out of the clamped cantilever beam; upper holes penetrate through the transverse ribs, corresponding to the upper connecting pieces, of the roof panels, and the flange portion of each upper connecting piece is in threaded connection with the corresponding transverse rib of the corresponding roof panel. The shed is relatively light and thin, convenient to transport, assemble and construct, capable of being produced in a standardized mode, high in strength, firm, durable, resistant to wind, snow pressure and hail, easy to maintain and high in corrosion resistance and fire resistance.

Description

TECHNICAL FIELD

[0001] The utility model relates to prefabricated construction technology field, specifically is a UHPC prefabricated assembly type carport. BACKGROUND

[0002] With the development of economy, the domestic and foreign automobile ownership increases sharply, accordingly, the demand of public area to durable, stable and safe carport is more and more strong. The mainstream structure of carport on the market is roughly divided into three categories: all steel type, that is, beam, column, roof truss and roof are all steel structures; Steel membrane combination type, that is, beam, column and roof truss are steel structures and roof is membrane structure; Steel glass combination type, that is, beam, column and roof truss are steel structures and roof is tempered glass or organic glass structure.

[0003] The above three categories of structures all have their own problems. For example, all steel structure and steel glass combination structure have poor load bearing performance, which may be crushed by snow; Steel glass combination structure has poor anti-stimulus performance, which is easy to be damaged by hail impact, and organic glass is seriously aged and brittle under high temperature exposure or freezing and thawing alternation; Steel membrane combination structure has poor wind load resistance, which may be overturned and torn under wind load.

[0004] Moreover, the above three categories of structures all have poor fire resistance. Steel membrane combination and steel glass combination have no fire resistance, and once a single point catches fire, the fire will spread rapidly along the roof in a large area, which makes it extremely difficult to extinguish the fire and rescue, and there is basically no way to deal with it, and the vehicles in the entire carport are burned in a short time, resulting in huge loss; The fire resistance of all steel structure is slightly stronger, at least the fire will not spread rapidly along the roof, but it cannot prevent the fire from spreading to the neighboring vehicles; Moreover, the steel structure will change its internal structure after high temperature burning, which will damage its strength and mechanical properties and thus become scrap. At present, new energy vehicles are developing rapidly, and electric vehicles are objectively prone to self-ignition; Therefore, the problem of insufficient fire resistance of carport has become a pain point that needs to be solved but has not been solved in the industry.

[0005] In addition, the existing steel structure carport also faces the big problem of corrosion disease, especially in coastal and river areas, the corrosion period of steel structure is extremely fast, the safety hidden danger of rusted steel columns, steel beams and steel tiles (roof) exposed directly to rain and air is huge, the daily maintenance cost is high, galvanizing and painting can only delay corrosion but cannot cure it, if all-aluminum alloy or all-stainless steel is used, the cost is high, which is difficult for developers and property management to accept. UTILITY MODEL CONTENTS

[0006] The technical problem to be solved by the utility model is to provide a UHPC prefabricated assembly type carport which is relatively light and thin, convenient to transport and assemble, can be produced in a standardized manner, has high strength, is firm and durable, resistant to wind, snow pressure and hail, easy to maintain, resistant to corrosion and has strong fire resistance.

[0007] The technical solution of the utility model discloses, provide a kind of UHPC prefabricated assembly type carport, it includes multiple cantilever frames and multiple roof panels, and each cantilever frame is packed with a main column and a cantilever beam;Cantilever frame is the cantilever frame of UHPC material, and roof panel is the roof panel of UHPC material;Each roof panel is provided with multiple transverse ribs of lower convex and two columns of longitudinal edge beams, and transverse rib is lower than longitudinal edge beam, and the top surface of each cantilever beam is provided with multiple notches;Each roof panel is mutually close and is provided with sealing strip or sealant at joint, and the two longitudinal edge beams of each two adjacent roof panels are mutually close and are commonly placed on the same cantilever beam, and each roof panel is inserted into the corresponding notch of the cantilever beam placed in each transverse rib;

[0008] The part notch of each cantilever beam is connected with an upper connecting piece, the connecting rib is embedded in the cantilever beam, the side wall of the n-shaped notch of the upper connecting piece is welded with the connecting rib of the cantilever beam, and the left and right flange parts of the upper connecting piece are convexly outside the cantilever beam; The corresponding transverse rib of the roof panel and the upper connecting piece is penetrated by an upper hole, and the flange part of each upper connecting piece is screwed with the corresponding transverse rib of the corresponding roof panel.

[0009] The bottom end of each main column is embedded with a connecting rib, the bottom end of the main column is connected with a u-shaped notch of a lower connecting piece, and the side wall of the u-shaped notch is welded with the connecting rib of the main column; The flange disc of the lower connecting piece is fixed with the concrete foundation through the ground anchor bolt; A layer of concrete bottom plate is poured on the concrete foundation, and the concrete bottom plate buries each lower connecting piece.

[0010] Compared with the prior art, the UHPC prefabricated assembly type carport with the above structure has the following advantages.

[0011] The main body of the carport is made of UHPC, which is more slender, light, smooth and beautiful than ordinary concrete; it can be produced standardly, transported easily and assembled conveniently, and can be quickly assembled by using upper and lower connecting pieces;

[0012] The UHPC material itself is high-strength and firm, so that the roof panel can be light and thin, and the overall strength and load bearing capacity of the roof are greatly increased after being combined with the transverse ribs and longitudinal beams; it can resist snow pressure and hail impact, and the material itself does not age and become brittle under high and low temperature alternation; it has strong wind load resistance and will not tear and damage, and the combination of upper and lower connecting pieces with roof, foundation and the like is a strong node, and the structure is firm and stable and will not overturn;

[0013] The UHPC roof has flame retardance, which can prevent fire from spreading along the roof; the material has strong fire resistance, and the limit fire resistance is more than 2.5 hours at 1000-1800℃, and the mechanical properties of the material after burning can ensure the stability of its own structure weight, which can greatly increase the time for fire extinguishing and rescue;

[0014] Anti-rust, as the only two metal parts, the lower connecting piece is permanently buried in the concrete floor protection, not with air water contact, never rust; and the upper connecting piece small volume, by the upper room panel close to cover, block the rain, and the upper connecting piece is not grounded, corrosion cycle extremely slowly, even more than the carport specified building life, so even lifelong maintenance; a step back, so small volume of metal parts, can be used completely stainless steel or aluminum, the cost increase is not obvious, but the permanent eradication of rust problems, can be completely acceptable;

[0015] The specific structure of the application is ingenious, combined with each other, and achieved by each other; the thin plate is additionally provided with a horizontal rib, which not only makes the whole light and thin, but also guarantees the necessary local strength, and at the same time meets the clamping and limiting of the cantilever slot; the cantilever slot is designed to facilitate the assembly of the upper connecting piece, make the clamping firm, clamp and limit the horizontal rib and the roof panel, and make the upper connecting piece just opposite to the horizontal rib, so that the screwing punching part is concentrated in the thickened part of the roof panel, and the strength of the horizontal rib can still be guaranteed after the upper hole is penetrated, which is beneficial to screwing; and the upper connecting piece connects the two roof panels, which just covers and protects the metal upper connecting piece, isolates rainwater, and resists rust; combined with the completely buried lower connecting piece of the concrete floor, the rust problem is completely solved.

[0016] As a preferred, the wedge-shaped reinforcing ribs are arranged between the left and right flange parts of the upper connecting piece and the two side walls of the n-shaped socket; the wedge-shaped reinforcing ribs are also arranged between the flange bottom disc of the lower connecting piece and the two side walls of the u-shaped socket; in this way, the strength of the upper and lower connecting pieces is further increased, and the connection firmness of each component is improved.

[0017] As a further preferred, the upper edge of each roof panel is provided with an inclined cutout, and a row of waterproof sealing rubber strips with triangular cross sections is coated between the two cutouts of the adjacent two roof panels; each upper hole is provided with a counterbore for accommodating the head of a bolt, and each counterbore is also filled with waterproof sealing glue; in this way, the joint of the two roof panels close to each other naturally forms a triangular groove, and the workers can naturally form a triangular sealing rubber strip after coating the glue; the above design makes the workers convenient to coat the glue, and the waterproof effect is superior; and the counterbores of the upper holes of the roof panel are also filled with waterproof glue, which wraps the head of the bolt and also blocks the downward water seepage path, thereby strengthening the waterproof protection of the metal upper connecting piece below the roof panel.

[0018] As another preferred, one fire-retardant cantilever frame is arranged in every n cantilevers, the front column of the front end of the cantilever beam of the fire-retardant cantilever frame is made of UHPC material, the bottom end of the front column is protruded with an L-shaped connecting rib which is anchored in the concrete bottom plate; the frame composed of the front column, the cantilever beam and the main column is arranged with a thin partition plate made of UHPC material; the roof panel made of UHPC material has solved the problem of fire spreading along the roof; and based on the cantilever frame made of UHPC material, the thin partition plate and the front column made of the same material are integrated to form a complete fire-retardant frame, so that the fire-retardant property of UHPC is fully utilized, the path of the fire flame spreading to the side of the adjacent vehicle is blocked, and the industry pain point of the existing carport without fire-retardant property and the rapid spreading of the fire out of control causing group vehicle damage is completely solved; and the thin partition plate, the front column and the base cantilever frame are made of the same material and integrally formed, the standardized prefabricated production has low difficulty and does not greatly increase the cost, and after the front column is anchored in the concrete bottom plate through the L-shaped connecting rib, the front column is vertically stable and provides firm support to the thin plate together with the main column, so that the thin partition plate is prevented from being laid down under the wind load.

[0019] As still preferably, a working pit is dug on the ground below each main column, and a concrete bearing platform is cast in each pit, and the lower section of the ground anchor bolt is pre-buried and anchored in the concrete bearing platform; in this way, the form of digging the working pit is targeted, only the space of the bearing platform is needed to be dug out, so that the amount of earthwork excavation and the amount of earthwork backfilling in the later stage are reduced; and after deep digging, the thickness of the bearing platform is increased, the connection strength with the main column is effectively increased, and the strength and the anti-laying down capacity of the carport are enhanced. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is the structural schematic diagram of the UHPC prefabricated assembly type carport.

[0021] Figure 2 is Figure 1 the structural schematic diagram after being deflected by a certain angle.

[0022] Figure 3 is the structural schematic diagram of the UHPC prefabricated assembly type carport before pouring the concrete bottom plate.

[0023] Figure 4 is the structural schematic diagram of the roof panel.

[0024] Figure 5 is the structural schematic diagram of the fire-retardant cantilever frame.

[0025] Figure 6 is the enlarged structural schematic diagram of the upper connecting piece.

[0026] Figure 7 is Figure 1 the enlarged schematic diagram of part A.

[0027] Figure 8 isFigure 1 Enlarged view of part B.

[0028] Figure 9 Figure 3 Enlarged view of part C.

[0029] Figure 10 Figure 4 Enlarged view of part D.

[0030] 1, roof panel, 2, main column, 3, cantilever beam, 4, horizontal rib, 5, vertical edge beam, 6, slot, 7, waterproof sealing strip, 8, upper connecting piece, 8.1, n-shaped socket, 8.2, flange part, 9, wedge-shaped reinforcing rib, 10, upper hole, 11, lower hole, 12, lower connecting piece, 12.1, u-shaped socket, 12.2, flange base, 13, concrete support platform, 14, concrete bottom plate, 15, front column, 16, L-shaped adapter, 17, thin partition plate, 18, counterbore. DETAILED DESCRIPTION

[0031] The utility model will be further described below in combination with the drawings and specific embodiments.

[0032] As Figures 1 to 10 shown, the utility model UHPC prefabricated assembly type carport, it includes multiple cantilever frames and multiple roof panels 1, each cantilever frame is wrapped with a main column 2 and a cantilever beam 3, the rear end of cantilever beam 3 is located on the upper end of main column 2 and is connected, and cantilever beam 3 and main column 2 are both made of UHPC material and integrally cast.

[0033] Each roof panel 1 is provided with multiple horizontal ribs 4 protruding downward and two rows of vertical edge beams 5, and the horizontal ribs 4 are lower than the vertical edge beams 5, and the top surface of each cantilever beam 3 is provided with multiple slots 6 corresponding to the horizontal ribs 4.

[0034] Each roof panel 1 is close to each other and is provided with a sealing strip or sealing glue at the joint, and the upper edge of the side surface of each roof panel 1 is provided with an inclined cutout, and the two cutouts of the adjacent two roof panels 1 form a triangular groove, and the triangular groove is coated with a row of waterproof sealing strips 7 with a triangular cross section.

[0035] Each two adjacent roof panels 1 are close to each other and are placed on the same cantilever beam 3. For example, a carport has 10 roof panels 1 and 20 vertical edge beams 5, the left vertical edge beam 5 of the leftmost roof panel 1 is placed on the leftmost cantilever beam 3 alone, and the right vertical edge beam 5 of the rightmost roof panel 1 is placed on the rightmost cantilever beam 3 alone; in addition, the remaining 18 middle vertical edge beams 5 are all close to each other and placed on the same cantilever beam 3. Each horizontal rib 4 of each roof panel 1 is clamped into the corresponding slot 6 of the cantilever beam 3.

[0036] ​​The upper connecting piece 8 is clamped in the part slot 6 of each cantilever beam 3. In the embodiment, the cantilever beam 3 has five slots 6, and the first, third and fifth slots 6 are provided with the upper connecting piece 8. Each upper connecting piece 8 comprises a central n-shaped clamping hole 8.1 and two flange portions 8.2 on both sides, and the two flange portions 8.2 are fixed to the top wall of the n-shaped clamping hole 8.1. The left and right flange portions 8.2 of the upper connecting piece 8 are provided with wedge-shaped reinforcing ribs 9 between the left and right side walls of the n-shaped clamping hole 8.1.

[0037] The cantilever beam 3 is pre-buried with a connecting rib extending along the thickness, which is lapped with the reinforcing cage of the cantilever beam 3 and anchored in the concrete of the cantilever beam 3, and the two ends of the connecting rib are exposed to the cantilever beam 3. The side wall of the n-shaped clamping hole 8.1 of the upper connecting piece 8 is welded to the connecting rib of the cantilever beam 3. The left and right flange portions 8.2 of the upper connecting piece 8 are protruded outwardly from the cantilever beam 3. The roof panel 1 is provided with an upper hole 10 corresponding to each upper connecting piece 8. The flange portion 8.2 of each upper connecting piece 8 is screwed to the corresponding transverse rib 4 of the roof panel 1. Specifically, for the ordinary upper connecting piece 8, the left bolt is inserted into the lower hole 11 of the left flange portion 8.2 and the upper hole 10 at the right end of the corresponding transverse rib 4 of the left roof panel 1, and the right bolt is inserted into the lower hole 11 of the right flange portion 8.2 and the upper hole 10 at the left end of the corresponding transverse rib 4 of the right roof panel 1. However, for the upper connecting pieces 8 on the most right side, since the roof panel 1 on the most right side extends to the right beyond the cantilever beam 3 and the upper connecting piece 8 on the most right side to cover and protect the upper connecting piece 8 on the most right side (see the right side of Fig. 1), the left and right flange portions 8.2 of the upper connecting pieces 8 on the most right side are screwed to the corresponding transverse rib 4 of the roof panel 1 on the most right side. Similarly, the roof panel 1 on the most left side also extends to the left beyond the cantilever beam 3 and the upper connecting piece 8 on the most left side, so the left and right flange portions 8.2 of the upper connecting pieces 8 on the most left side are screwed to the corresponding transverse rib 4 of the roof panel 1 on the most left side. Figure 2

[0038] The main column 2 is pre-buried with a connecting rib extending along the thickness, which is lapped with the reinforcing cage of the main column 2 and anchored in the concrete of the main column 2, and the two ends of the connecting rib are exposed to the main column 2. The bottom end of the main column 2 is clamped in the u-shaped clamping hole 12.1 of a lower connecting piece 12, and the side wall of the u-shaped clamping hole 12.1 is welded to the connecting rib of the main column 2. The flange base plate 12.2 of the lower connecting piece 12 is fixed to the concrete foundation by the ground anchor bolt. The wedge-shaped reinforcing ribs 9 are also provided between the left and right side walls of the u-shaped clamping hole 12.1 and the flange base plate 12.2 of the lower connecting piece 12.

[0039] In the embodiment, the ground under each main column 2 is excavated to form a working pit, and a concrete support 13 is poured in each pit. The lower end of the ground anchor bolt is anchored in the concrete support 13, and the concrete support 13 is the concrete foundation fixed to the main column 2.

[0040] ​A concrete base is poured with a concrete floor slab 14, which is higher in thickness than the lower connectors 12 so as to bury each lower connector 12.

[0041] Each upper hole 10 of the transverse rib 4 of the roof panel 1 is provided with a counterbore 18 for accommodating the head of a bolt, and each counterbore 18 is also filled with waterproof sealant 7.

[0042] Each n set of cantilevered frames is provided with one set of fire-retardant cantilevered frames, wherein n is determined according to user needs and comprehensive consideration of fireproof performance and cost. For example, to control cost and have the function of blocking fire from the side, one set of cantilevered frames with fire-retardant function is arranged every 3 cantilevered frames. The front end of the cantilevered beam of the fire-retardant cantilevered frame is further provided with a front column 15 made of UHPC material, the bottom end of the front column 15 is provided with an L-shaped connecting rod 16, and the L-shaped connecting rod 16 is anchored in the concrete floor slab 14. A thin partition plate 17 made of UHPC material is arranged in the frame composed of the front column 15, the cantilevered beam 3 and the main column 2, and the thickness of the thin partition plate 17 is only 30 mm. The front column 15, the cantilevered beam 3, the main column 2 and the thin partition plate 17 are integrally poured and formed by UHPC material.

Claims

1. A UHPC prefabricated assembled carport, comprising a plurality of cantilever frames and a plurality of roof panels, each cantilever frame comprising a main upright column and a cantilever beam; characterized in that: The cantilever frame is made of UHPC material, and the roof panel is made of UHPC material; each roof panel is provided with a plurality of downward convex transverse ribs and two rows of longitudinal edge beams, the transverse ribs are lower than the longitudinal edge beams, the top surface of each cantilever beam is provided with a plurality of notches; each roof panel is close to each other and the joint is provided with a sealing strip or sealant, the two longitudinal edge beams of each two adjacent roof panels are close to each other and are placed on the same cantilever beam, and each transverse rib of each roof panel is clamped into the corresponding notch of the placed cantilever beam. Part of the notches of each cantilever beam are clamped with an upper connecting piece, a connecting rib is pre-buried in the cantilever beam, the side wall of the n-shaped notch of the upper connecting piece is welded with the connecting rib of the clamped cantilever beam, and the left and right flange parts of the upper connecting piece are convexly outside the clamped cantilever beam; the corresponding transverse rib of the roof panel and the upper connecting piece is penetrated by an upper hole, and the flange part of each upper connecting piece is screwed with the corresponding transverse rib of the corresponding roof panel. A connecting rib is pre-buried at the bottom end of each main column, the u-shaped notch of a lower connecting piece is clamped with the bottom end of the main column, and the side wall of the u-shaped notch is welded with the connecting rib of the main column; the flange disc of the lower connecting piece is fixed with the concrete foundation through the ground anchor bolt; a layer of concrete bottom plate is poured on the concrete foundation, and the lower connecting pieces are buried in the concrete bottom plate.

2. The UHPC prefabricated assembled carport according to claim 1, characterized in that: The wedge-shaped reinforcing ribs are arranged between the left and right flange parts of the upper connecting piece and the side walls of the n-shaped notch; the wedge-shaped reinforcing ribs are also arranged between the flange disc of the lower connecting piece and the side walls of the u-shaped notch.

3. The UHPC prefabricated assembled carport according to claim 1, characterized in that: The upper edge of the side surface of each roof panel is provided with an inclined cutout, and a waterproof sealing strip with a triangular cross section is coated between the two cutouts of the adjacent two roof panels; each upper hole is provided with a counterbore for accommodating the head of the bolt, and the counterbores are also filled with waterproof sealant.

4. The UHPC prefabricated assembled carport according to claim 1, characterized in that: One of the n frames of cantilever frames is provided with a fire-retardant cantilever frame, the front end of the cantilever beam of the fire-retardant cantilever frame is further provided with a front column made of UHPC material, the bottom end of the front column is convexly provided with an L-shaped connecting rib which is anchored in the concrete bottom plate; the frame composed of the front column, the cantilever beam and the main column is provided with a thin partition plate made of UHPC material.

5. The UHPC prefabricated assembled carport according to claim 1, characterized in that: An operation pit is dug in the ground below each main column, and a concrete pile cap is poured in each pit, and the lower section of the ground anchor bolt is pre-buried and anchored in the concrete pile cap.

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