Shaped steel mould tunnel center cast-in-place concrete drainage ditch construction device

Abstract

The utility model relates to a shaping steel mould tunnel center cast-in-place concrete drainage ditch construction device. The shaping steel mould tunnel center cast-in-place concrete drainage ditch construction device comprises a movable shaping template framework structure, a separated adjustable shaping steel outer mould structure, a separated adjustable shaping steel inner mould structure and a reinforcing steel bar integral hoisting auxiliary installation device. The utility model has the beneficial effects that the separated adjustable shaped steel outer mold structure and the separated adjustable shaped steel inner mold structure are hung to the design position of the drainage ditch through the movable shaped template skeleton structure, and the movable shaped template skeleton structure moves along the length direction of the drainage ditch through the pulleys; and staged pouring of the central drainage ditch can be carried out.

Description

Technical Field

[0001] The utility model belongs to the field of construction of cast-in-situ central drainage ditches in tunnels, and particularly relates to a construction device for cast-in-situ concrete drainage ditches in the center of a tunnel with a standardized steel formwork. Background Art

[0002] The central drainage ditch in a highway tunnel runs longitudinally through the whole tunnel and is a key link in the water collection and drainage system of the whole tunnel. The seepage water in the stratum outside the tunnel structure is collected through the circumferential drainage blind pipes and converged by the longitudinal drainage pipes, and finally flows into the central drainage ditch through the transverse drainage blind pipes and is discharged into the external drainage system of the tunnel by the central drainage ditch. At present, the formwork construction efficiency of the drainage ditch is low, and there may be leakage at the joints, and the leaked water cannot be smoothly discharged into the central drainage ditch.

[0003] In summary, for the construction of cast-in-situ concrete drainage ditches in the center of a tunnel with a standardized steel formwork, it is intended to seek a construction device for cast-in-situ concrete drainage ditches in the center of a tunnel with a standardized steel formwork that has a fast construction speed, is simple to operate, and has high construction quality and reliability. Summary of the Invention

[0004] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a construction device for cast-in-situ concrete drainage ditches in the center of a tunnel with a standardized steel formwork.

[0005] This construction device for cast-in-situ concrete drainage ditches in the center of a tunnel with a standardized steel formwork includes: a mobile standardized formwork skeleton structure, a separable and adjustable standardized steel outer formwork structure, a separable and adjustable standardized steel inner formwork structure, and a steel bar integral hoisting and auxiliary installation device; the mobile standardized formwork skeleton structure is erected above the designed position of the central drainage ditch, and a separable and adjustable standardized steel outer formwork structure or a separable and adjustable standardized steel inner formwork structure is hung by a sleeve; the width of the separable and adjustable standardized steel outer formwork structure is adjusted by an adjustable screw rod, and movable section square steel is hinged on the outer side and the bottom of the separable and adjustable standardized steel outer formwork structure for pouring porous concrete and the inner concrete backfill layer; the separable and adjustable standardized steel inner formwork structure is inserted between the two sides of the porous concrete, and a steel reinforcement cage of the central drainage ditch is placed on the outer side of the separable and adjustable standardized steel inner formwork structure.

[0006] Preferably, the mobile standardized formwork skeleton structure includes longitudinal beams, cross beams, sleeves, adjustable bolts, adjustable screw rods, and pulleys; the cross beams are arranged along the width direction of the central drainage ditch, the sleeves slide on the cross beams, and the sleeves are fixed on the cross beams by adjustable bolts; adjustable screw rods are arranged at both ends of the cross beams, pulleys are installed at the lower parts of the adjustable screw rods, and the adjustable screw rods are used to adjust the height of the mobile standardized formwork skeleton structure; the pulleys move on the outer concrete backfill layers on both sides of the central drainage ditch; the mobile standardized formwork skeleton hangs a separable and adjustable standardized steel outer formwork structure or a separable and adjustable standardized steel inner formwork structure through a sleeve.

[0007] Preferably, the separable and adjustable steel formwork structure for shaping includes vertical poles, adjustable screw rods, outer formwork, bottom formwork, movable-section square steel, fixed-section square steel, steel plates, ear plates, collar rings, L-shaped fasteners and movable shafts; the top of the vertical pole is fixedly welded to the sleeve, the fixed-section square steel is horizontally arranged on the side of the vertical pole, and ear plates are arranged on the opposite sides of the two vertical poles; a fixed-section square steel is provided inwardly at the bottom of each of the two vertical poles, and a fixed-section square steel is provided outwardly at the middle height of each of the two vertical poles, and the movable-section square steel is hinged to the end of each fixed-section square steel.

[0008] Preferably, the movable-section square steel at the middle height of the two vertical poles is connected to the vertical pole through an adjustable screw rod; the movable-section square steel is connected to the fixed-section square steel through a movable shaft; the outer formwork is arranged on the outer side of the structure formed by the movable-section square steel, fixed-section square steel and vertical pole outside the two vertical poles, and the outer formwork on the outer side of the movable-section square steel rotates with the movable-section square steel; the bottom formwork is installed below the movable-section square steel and fixed-section square steel at the bottom of the vertical pole, and an L-shaped fastener is arranged at the end of the movable-section square steel provided at the bottom of the vertical pole. When the movable-section square steel is placed horizontally, the two L-shaped fasteners are closed and a steel plate is inserted; an adjustable screw rod is arranged between the vertical poles; the inner side of the outer formwork and the bottom formwork is a concrete backfill layer on the inner side.

[0009] Preferably, the collar ring is fixed on the ear plate. After the construction of the inner concrete backfill layer is completed, the movable-section square steel connecting the bottom formwork is erected, and the L-shaped fastener of the movable-section square steel is fixed to the L-shaped fastener through the collar ring; porous concrete is poured on the outer side of the outer formwork after the outer formwork of the movable-section square steel is rotated and erected.

[0010] Preferably, the separable and adjustable steel formwork structure for shaping includes an inner formwork and vertical poles; the tops of the two vertical poles are respectively welded to two sleeves, the inner formwork is welded to the outer sides of the two vertical poles, the upper part of the inner formwork is L-shaped facing the inner side, and the part below the inner end of the bottom of the L-shaped is a vertical structure. Wooden pads are installed in the gap between the L-shaped and the vertical pole; an adjustable screw rod is arranged between the two vertical poles for adjusting the distance between the two vertical poles.

[0011] Preferably, the auxiliary installation device for integral hoisting of steel bars includes an adjustable suspension rod. The top of the adjustable suspension rod is connected to the movable and standardized formwork skeleton structure, the steel bar cage is hung at the bottom of the adjustable suspension rod, embedded steel bars are arranged in the inner concrete backfill layer, and the steel bar cage is welded to the embedded steel bars in the inner concrete backfill layer; threaded sections and hooks are respectively arranged at both ends of the adjustable suspension rod, and the steel bar cage is connected through the hook.

[0012] The beneficial effects of the present utility model are:

[0013] 1) The utility model hangs a separable adjustable type steel external formwork structure and a separable adjustable type steel internal formwork structure to the designed position of the drainage ditch through a mobile standardized formwork skeleton structure. The mobile standardized formwork skeleton structure moves along the length direction of the drainage ditch through pulleys, and can carry out staged pouring of the central drainage ditch.

[0014] 2) The utility model pours the outer side structure of the central drainage ditch through the separable adjustable type steel external formwork structure. The outer formworks on both sides of the separable adjustable type steel external formwork structure can rotate, and formwork can be supported for different shaped pouring areas without replacing the formwork, improving the construction efficiency.

[0015] 3) The utility model pours the ditch body of the central drainage ditch through the separable adjustable type steel internal formwork structure in cooperation with adjustable suspenders, and flexibly adjusts the width through adjustable screw rods, and can meet the construction requirements of various different specifications of drainage ditches. Description of the Drawings

[0016] Figure 1 is a schematic cross-sectional view of the central drainage ditch of the tunnel;

[0017] Figure 2 is a schematic cross-sectional view of the installation of the separable adjustable type steel external formwork structure when pouring the inner side concrete backfill layer;

[0018] Figure 3 is a schematic cross-sectional view of the installation of the separable adjustable type steel external formwork structure when pouring porous concrete;

[0019] Figure 4 is a schematic cross-sectional view of the installation of the separable adjustable type steel internal formwork structure;

[0020] Figure 5 is a schematic plan view of the mobile standardized formwork skeleton structure;

[0021] Figure 6 is a schematic diagram of the large sample of the adjustable suspender;

[0022] Figure 7 is a schematic diagram of the large sample of the collar.

[0023] In the figures: 1 - central drainage ditch, 2 - inverted arch, 3 - concrete backfill layer, 4 - porous concrete, 5 - precast cover plate, 6 - outer side concrete backfill layer, 7 - inner side concrete backfill layer, 8 - longitudinal beam, 9 - cross beam, 10 - vertical pole, 11 - sleeve, 12 - adjustable bolt, 13 - adjustable screw rod, 14 - pulley, 15 - adjustable screw rod, 16 - outer formwork, 17 - bottom formwork, 18 - movable section square steel, 19 - fixed section square steel, 20 - steel plate, 21 - ear plate, 22 - collar, 23 - L-shaped fastener, 24 - movable shaft, 25 - inner formwork, 26 - adjustable suspender, 27 - steel reinforcement cage, 28 - cushion block, 29 - steel plate. Detailed implementation manners

[0024] The present invention will be further described below in conjunction with embodiments. The description of the following embodiments is only used to help understand the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

[0025] Embodiment 1

[0026] As an embodiment, as Figures 1 to 7 shown, this standardized steel form tunnel center cast-in-place concrete drainage ditch construction device includes: central drainage ditch 1, inverted arch 2, concrete backfill layer 3, porous concrete 4, precast cover plate 5, outer concrete backfill layer 6, inner concrete backfill layer 7, longitudinal beam 8, cross beam 9, vertical pole 10, sleeve 11, adjustable bolt 12, adjustable screw rod 13, pulley 14, adjustable screw rod 15, outer formwork 16, bottom formwork 17, movable section square steel 18, fixed section square steel 19, steel plate 20, ear plate 21, collar 22, L-shaped fastener 23, movable shaft 24, inner formwork 25, adjustable suspender 26, steel reinforcement cage 27, cushion block 28; it relates to a mobile standardized formwork skeleton structure, a separable adjustable standardized steel outer formwork structure, a separable adjustable standardized steel inner formwork structure, a steel bar integral hoisting auxiliary installation device, and a tunnel center drainage ditch cover plate rapid construction technology.

[0027] The mobile standardized formwork skeleton structure is composed of a longitudinal beam 8, a cross beam 9, a sleeve 11, an adjustable bolt 12, an adjustable screw rod 13, and a pulley 14, and related components are processed in a factory; the sleeve 11 can slide on the cross beam 9, and after moving to the designed position, it is fixed by the adjustable bolt 12; an adjustable screw rod 13 is arranged on the cross beam 9, and a pulley 14 is installed at the lower part of the adjustable screw rod 13, and the height of the mobile standardized formwork skeleton structure is adjusted by adjusting the adjustable screw rod 13; the pulley 14 moves on the outer concrete backfill layer 6; multiple mobile standardized formwork skeletons are processed and are respectively used for the separable adjustable standardized steel outer formwork structure and the separable adjustable standardized steel inner formwork structure.

[0028] The described separable and adjustable formwork steel outer mold structure is composed of vertical poles 10, adjustable screw rods 15, outer formwork 16, bottom formwork 17, movable section square steel 18, fixed section square steel 19, steel plate 20, ear plates 21, collar rings 22, L-shaped fasteners 23, movable shafts 24, etc. The relevant components are processed in the factory. The vertical pole 10 is welded and fixed to the sleeve 11, and the fixed section square steel 19 and ear plates 21 are arranged thereon. The movable section square steel 18 is connected to the vertical pole 10 through the adjustable screw rod 15. The movable section square steel 18 is connected to the fixed section square steel 19 through the movable shaft 24. The outer formwork 16 is arranged at the corresponding positions of the movable section square steel 18, fixed section square steel 19 and vertical pole 10, and the outer formwork 16 of the movable section square steel 18 can rotate with the movable section square steel 18. The movable section square steel 18 and fixed section square steel 19 are arranged at the bottom of the vertical pole 10 and the bottom formwork 17 is installed. An L-shaped fastener 23 is arranged at the end of the movable section square steel 18 at the bottom of the vertical pole 10. When the movable section square steel 18 is placed horizontally, the two-sided L-shaped fasteners 23 are closed and the steel plate 20 is inserted for fixation. The adjustable screw rods 15 are arranged between the vertical poles 10. After moving the movable formwork skeleton structure to the designed position, adjust the adjustable screw rod 15 to move the sleeve 11 and vertical pole 10 to the designed position, and fix the adjustable bolt 12. Then adjust the adjustable screw rod 15 to make the outer formwork 16 of the movable section square steel 18 located at the designed position, and fix the bottom formwork 17. Finally, construct the inner concrete backfill layer 7.

[0029] After the construction of the inner concrete backfill layer 7 is completed, pull out the steel plate 20, erect the bottom formwork 17 of the movable section square steel 18, and fix it through the collar ring 22 and L-shaped fastener 23, where the collar ring 22 is fixed on the ear plate 21. Loosen the adjustable bolt 12, contract and adjust the adjustable screw rod 15 to move the vertical pole 10 inward to the designed position, fix the adjustable bolt 12, adjust the outer formwork 16 of the movable section square steel 18 to make it erect and fixed, and pour porous concrete 4 on the outside of the outer formwork 16.

[0030] Embodiment 2

[0031] As another embodiment, on the basis of Embodiment 1, this Embodiment 2 proposes a more specific formwork steel tunnel center cast-in-place concrete drainage ditch construction device.

[0032] The inner formwork 25 is welded to the vertical pole 10. The upper part of the inner formwork 25 is L-shaped facing inward, and the part below the inner end of the bottom of the L-shape is a vertical structure. A wooden spacer 28 is installed in the gap between the L-shape and the vertical pole 10. By adjusting the adjustable screw rod 15, move the sleeve 11 and vertical pole 10 to the designed position, and fix the adjustable bolt 12. Among them, adjust the adjustable screw rod 15 to adjust the distance between the two vertical poles 10, and further adjust the width of the central drainage ditch 1. By controlling the position of the vertical pole 10, further control the position of the inner formwork 25.

[0033] The steel reinforcement cage 27 is placed at the designed position of the central drainage ditch 1. The movable, separable and adjustable standardized steel inner formwork structure is moved to the designed position. The overall hoisting of the steel bars is assisted by the adjustable suspension rod 26 for installation. Finally, the steel reinforcement cage 27 is welded to the embedded bars of the inner concrete backfill layer 7. The adjustable suspension rod 26 is installed on the cross beam 9, and is provided with a threaded section and a hook, and is connected to the stress bars of the steel reinforcement cage 27 through the hook.

[0034] After the movable standardized formwork skeleton structure, the separable and adjustable standardized steel outer formwork structure and the separable and adjustable standardized steel inner formwork structure are all assembled externally, they are integrally hoisted to the designed position of the central drainage ditch 1.

[0035] It should be noted that the parts that are the same or similar to those in the first embodiment in this embodiment can be referred to each other, and will not be described in detail in this application.

[0036] In this specification, each embodiment is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other.

Claims

1. A standardized steel formwork tunnel center cast-in-place concrete drainage ditch construction device, characterized in that: include: Movable standardized formwork skeleton structure, detachable adjustable standardized steel outer formwork structure, detachable adjustable standardized steel inner formwork structure and steel bar integral hoisting auxiliary installation device; The movable standardized formwork skeleton structure is erected above the designed position of the central drainage ditch, and a detachable adjustable standardized steel outer formwork structure or a detachable adjustable standardized steel inner formwork structure is suspended through a sleeve; the width of the detachable adjustable standardized steel outer formwork structure is adjusted by an adjustable screw rod, and movable square steel sections are hinged on the outside and bottom of the detachable adjustable standardized steel outer formwork structure for pouring porous concrete and inner concrete backfill layer; the detachable adjustable standardized steel inner formwork structure is inserted between the porous concrete on both sides, and a steel cage of the central drainage ditch is placed on the outside of the detachable adjustable standardized steel inner formwork structure.

2. The standardized steel formwork tunnel center cast-in-place concrete drainage ditch construction device according to claim 1 is characterized in that: The movable standardized formwork skeleton structure comprises a longitudinal beam, a transverse beam, a sleeve, an adjustable bolt, an adjustable screw and a pulley; the transverse beam is arranged along the width direction of the central drainage ditch, the sleeve slides on the transverse beam, and the sleeve is fixed to the transverse beam by an adjustable bolt; adjustable screws are arranged at both ends of the transverse beam, a pulley is installed at the lower part of the adjustable screw, and the adjustable screw is used to adjust the height of the movable standardized formwork skeleton structure; the pulley moves on the outer concrete backfill layer on both sides of the central drainage ditch; the movable standardized formwork skeleton is suspended with a separate adjustable standardized steel outer mold structure or a separate adjustable standardized steel inner mold structure through a sleeve.

3. The standardized steel formwork tunnel center cast-in-place concrete drainage ditch construction device according to claim 1 is characterized in that: The detachable and adjustable shaped steel outer mold structure includes a vertical pole, an adjustable screw rod, an outer mold plate, a bottom mold plate, a movable section square steel, a fixed section square steel, a steel plate, an ear plate, a collar, an L-shaped fastener and a movable shaft; the top end of the vertical pole is welded and fixed to the sleeve, a fixed section square steel is horizontally arranged on the side of the vertical pole, and ear plates are arranged on the opposite sides of the vertical poles on both sides; a fixed section square steel is respectively arranged inwardly at the bottom of the vertical poles on both sides, and a fixed section square steel is respectively arranged outwardly at the middle height of the vertical poles on both sides, and a movable section square steel is hinged to the end of each fixed section square steel.

4. The standardized steel formwork tunnel center cast-in-place concrete drainage ditch construction device according to claim 3 is characterized in that: The movable section square steel at the middle height of the vertical poles on both sides is connected to the vertical poles through an adjustable screw rod; the movable section square steel is connected to the fixed section square steel through a movable shaft; the outer formwork is arranged on the outside of the structure formed by the movable section square steel, the fixed section square steel and the vertical poles outside the vertical poles on both sides, wherein the outer formwork on the outside of the movable section square steel rotates with the movable section square steel; the bottom formwork is installed under the movable section square steel and the fixed section square steel at the bottom of the vertical pole, wherein the end of the movable section square steel arranged at the bottom of the vertical pole is provided with an L-shaped fastener, and when the movable section square steel is placed horizontally, the L-shaped fasteners on both sides are closed and steel plates are inserted; an adjustable screw rod is arranged between the vertical poles; the outer side of the outer formwork and the bottom formwork is the inner concrete backfill layer.

5. The standardized steel formwork tunnel center cast-in-place concrete drainage ditch construction device according to claim 3 is characterized in that: The sleeve ring is fixed on the ear plate. After the inner concrete backfill layer is constructed, the movable section square steel connected to the bottom template is erected, and the movable section square steel L-shaped fastener is fixed with the L-shaped fastener through the sleeve ring; after the movable section square steel outer template is rotated to stand up, porous concrete is poured on the outside of the outer template.

6. The standardized steel formwork tunnel center cast-in-place concrete drainage ditch construction device according to claim 1 is characterized in that: The separate adjustable shaped steel inner mold structure includes an inner mold and vertical poles; the top ends of the vertical poles on both sides are welded to two sleeves respectively, and the inner mold is welded to the outside of the vertical poles on both sides. The upper part of the inner mold is L-shaped facing inward, and the inner end of the bottom of the L-shape is a vertical structure below. A wooden pad is installed in the gap between the L-shape and the vertical pole; an adjustable screw rod is provided between the vertical poles on both sides for adjusting the spacing between the vertical poles on both sides.

7. The standardized steel formwork tunnel center cast-in-place concrete drainage ditch construction device according to claim 1 is characterized in that: The overall lifting auxiliary installation device for steel bars includes an adjustable hanging rod, the top of which is connected to the movable standardized formwork skeleton structure, the steel cage is hung at the bottom of the adjustable hanging rod, the inner concrete backfill layer is provided with embedded reinforcement, and the steel cage is welded and connected to the embedded reinforcement of the inner concrete backfill layer; threaded sections and hooks are respectively provided at both ends of the adjustable hanging rod, and are connected to the steel cage through the hooks.

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