CN212897580U

CN212897580U - Detachable supporting structure at lower part of large-span cantilever beam

Info

Publication number: CN212897580U
Application number: CN202021579215.0U
Authority: CN
Inventors: 杨志国; 程龙; 李慧; 陈浩; 王春艳; 左东东; 孟建人; 侯丽霞
Original assignee: Third Construction Engineering Co Ltd of China Construction Second Engineering Bureau Co Ltd
Current assignee: Third Construction Engineering Co Ltd of China Construction Second Engineering Bureau Co Ltd
Priority date: 2020-08-03
Filing date: 2020-08-03
Publication date: 2021-04-06
Anticipated expiration: 2030-08-03

Abstract

The utility model discloses a detachable supporting structure at the lower part of a large-span cantilever beam, which comprises an upper beam, a lower beam, a beam column connected between the upper beam and the lower beam, a supporting frame connected with the top surface of the lower beam, an adjusting part and an adjusting top plate connected between the supporting frame and the upper beam, a beam embedded part connected between the supporting frame and the lower beam and a diagonal bracing system connected between the supporting frame and the beam column; the beam embedded part is fixedly connected with a connecting rib in the beam body in advance; the inclined strut system comprises a strut body, strut connecting pieces connected to two ends of the strut body and strut embedded pieces connected between the strut connecting pieces at the bottom end of the strut body and the beam-to-beam column. The utility model discloses a load and the wholeness of support frame have been guaranteed in the setting of support frame. The arrangement of the inclined strut system is beneficial to bearing the bottom of the support frame and sharing load; the arrangement of the lower connecting plate and the beam embedded part is beneficial to ensuring the connection and fastening of the bottom of the support frame; through the setting of regulating part and regulation roof, do benefit to the fine setting and adapt to site operation.

Description

Detachable supporting structure at lower part of large-span cantilever beam

Technical Field

The utility model belongs to the technical field of the construction, in particular to bearing structure can be dismantled to large-span cantilever beam lower part.

Background

At present, various public buildings have increasingly large requirements on space utilization and modeling characteristics, and local overhanging, particularly skip-floor overhanging, occurs in a large number of buildings. In the cast-in-place overhanging structure, the formwork is difficult to support and is difficult to construct, and a higher cross-layer bracket system is often adopted to ensure the smooth construction of the overhanging part. The formwork in the mode is too high in erection height, high in construction difficulty and slow in progress. The supporting structure is also arranged through the overhanging structure, but the integrity of the supporting structure is not guaranteed in the design; and the upper part and the lower part of the supporting structure lack adjustable settings, so that the adaptability to site construction is poor. But in addition to supporting structure's cyclic utilization, convenient dismantlement again, the turnover is used, improves the repeated material utilization ratio, from this need according to building cantilever beam department structural style, targeted design of carrying on supporting structure.

SUMMERY OF THE UTILITY MODEL

The utility model provides a bearing structure can be dismantled to large-span cantilever beam lower part for the wholeness design, adjustable design and the convenient installation of solving large-span cantilever beam lower part bearing structure are dismantled and can have enough to meet the need technical problem such as use design.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a detachable supporting structure for the lower part of a large-span cantilever beam comprises an upper beam, a lower beam, an inter-beam column connected between the upper beam and the lower beam, a supporting frame connected to the top surface of the lower beam, an adjusting part and an adjusting top plate connected between the supporting frame and the upper beam, a beam embedded part connected between the supporting frame and the lower beam and an inclined strut system connected between the supporting frame and the inter-beam column;

the lower end of the adjusting piece is detachably connected to the top of the support frame, and the upper end of the adjusting piece is connected with an adjusting top plate; the adjusting top plate is connected to the lower surface of the upper beam;

the supporting frame comprises vertical rods, transverse rods vertically connected with the vertical rods, inclined rods connected between the vertical rods and connected with the transverse rods, and rod connecting plates connected between the vertical rods and the upper surfaces of the lower beams; a lower connecting plate is connected below the vertical rods in the same row along the length direction of the beam;

the beam embedded part is embedded in the lower layer beam body and is fixedly connected with the connecting rib in the beam body, and the top of the beam embedded part is detachably connected with the lower connecting plate part; the tops of the beam embedded parts in the same row in the beam width direction are connected through a pre-connecting plate;

the inclined strut system comprises a strut body, strut connecting pieces connected to two ends of the strut body and strut embedded pieces connected between the strut connecting pieces at the bottom end of the strut body and the beam column.

Furthermore, the adjusting piece is a rod piece and is in threaded connection with the vertical rod; the top of the adjusting piece is detachably connected with an adjusting top plate; the adjusting top plate is a square plate.

Further, an upper backing plate is connected between the adjusting top plate and the upper-layer beam, and the upper backing plate is a group of strip plates or square plates; the upper backing plate is arranged in the range of the lower surface of the beam which is designed and supported by the upper-layer beam.

Further, the montant top is the height-adjusting of the high adaptation regulating part design of cavity and cavity section, still is connected with the pole end spare between montant and lower even board, and the pole end spare is connected with even fixed the dismantling of board down, can dismantle the connection between adjacent pole end spare.

Furthermore, the vertical rods and the transverse rods, the inclined rods and the transverse rods and the inclined rods and the vertical rods are detachably connected through rod connecting pieces; the rod connector comprises a fastener, a hoop or a barrel.

Furthermore, the inclined rod is detachably connected with the top of the lower beam through a rod connecting plate; the vertical rods at the outermost side or the innermost side are detachably connected with the top of the lower-layer beam through the rod connecting plate; the rod connecting plates along the beam width direction are integrally connected.

Furthermore, the beam embedded part is a U-shaped part, and two ends of the opening are detachably connected with the pre-connecting plate through bolts; the pre-connecting plate is connected above the rod bottom piece.

Furthermore, at least two connecting ribs are arranged at the corners in the beam embedded part, and the connecting ribs are arranged along the length direction of the lower layer beam and connected with the steel bars in the beam body; the length of the connecting rib is not less than 1500 mm.

Further, the rod bottom piece is a rod piece and comprises a square-shaped, groove-shaped or I-shaped piece; the two rod bottom pieces are in a group and arranged side by side; the rod bottom part is connected to the opening of the embedded part.

Furthermore, the supporting bodies are rod pieces, and horizontal reinforcing pieces are connected between adjacent supporting bodies; the support embedded part at the lower part of the support body comprises an embedded steel plate and an L-shaped hook connected between the embedded steel plate and the beam column.

The beneficial effects of the utility model are embodied in:

1) the utility model establishes the main body of the supporting structure through the arrangement of the supporting frame, wherein the supporting frame is connected through the vertical rod, the horizontal rod and the diagonal rod, and the load bearing and the integrity of the supporting frame are ensured; in addition, the lower part of the vertical rod is connected with a rod connecting plate and a rod bottom piece which are connected with the lower layer beam to form a stressed tripod, so that the stress is stable, and the integrity of the support frame and the beam body is further ensured;

2) the utility model is beneficial to bearing the bottom of the support frame and sharing part of the upper load of the support frame to the beam column through the arrangement of the inclined strut system; therefore, the lower-layer beam and the beam-to-beam column are jointly used for bearing, and the stress can be further ensured;

3) the utility model is beneficial to ensuring the connection and fastening of the bottom of the support frame through the arrangement of the lower connecting plate and the beam embedded part, wherein the beam embedded part is fixedly connected with the steel bar in the beam through the connecting bar, thereby further ensuring the uniformity of stress;

4) the utility model is beneficial to fine adjustment when the top of the support frame is connected with the template or the upper backing plate is supported through the arrangement of the adjusting piece and the adjusting top plate, and is more suitable for site construction conditions;

the utility model discloses in, can not be used for the local of upper portion floor to encorbelment and set up the die carrier on a large scale, only need carry out the die carrier on bearing structure and set up, effectively improve the efficiency of construction. All the components are connected in a detachable connection mode, so that batch manufacturing and installation are facilitated; the disassembly and the reutilization after the construction are facilitated. The utility model provides a bearing structure security is high, the atress performance is good and can be very big save the component quantity. Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention; the primary objects and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description.

Drawings

FIG. 1 is a construction schematic diagram of a detachable support structure at the lower part of a large-span cantilever beam;

FIG. 2 is a schematic view of a beam embedment connection structure;

FIG. 3 is a top partial schematic view of a support structure;

fig. 4 is a partial bottom schematic view of a support structure.

Reference numerals: 1-upper beam, 2-lower beam, 3-beam column, 4-upper cushion plate, 5-lower connecting plate, 6-support frame, 61-vertical rod, 62-horizontal rod, 63-diagonal rod, 64-rod connecting piece, 65-rod connecting plate, 66-rod bottom piece, 7-diagonal support system, 71-support body, 72-support connecting piece, 73-support embedded piece, 8-beam embedded piece, 9-pre-connecting plate, 10-connecting rib, 11-adjusting piece and 12-adjusting top plate.

Detailed Description

As shown in fig. 1, a detachable supporting structure for the lower part of a large-span cantilever beam comprises an upper beam 1, a lower beam 2, an inter-beam column 3 connected between the upper beam 1 and the lower beam 2, a supporting frame 6 connected to the top surface of the lower beam 2, an adjusting part 11 and an adjusting top plate 12 connected between the supporting frame 6 and the upper beam 1, a beam embedded part 8 connected between the supporting frame 6 and the lower beam 2, and a bracing system 7 connected to the supporting frame 6 and the inter-beam column 3.

In this embodiment, the upper beam 1, the lower beam 2, and the inter-beam column 3 are all made of reinforced concrete, wherein the upper beam 1 and the lower beam 2 are cantilever beams. The beam-to-beam columns 3 are arranged between the upper-layer beam 1 and the lower-layer beam 2 at intervals.

In this embodiment, the supporting frame 6 comprises vertical rods 61, cross rods 62 vertically connected to the vertical rods 61, diagonal rods 63 connected between the vertical rods 61 and the cross rods 62, and rod connecting plates 65 connected between the vertical rods 61 and the upper surface of the lower beam 2; the lower connecting plate 5 is connected below the vertical rods 61 in the same row along the length direction of the beam. The vertical rod 61, the cross rod 62 and the inclined rod 63 are made of steel pipes, the diameter of each steel pipe is 48mm, and the wall thickness of each steel pipe is not smaller than 3.0 mm. Wherein the connecting rod plate 65 and the lower connecting plate 5 are both made of steel plates.

In this embodiment, the vertical bar 61 and the horizontal bar 62, the diagonal bar 63 and the horizontal bar 62, and the diagonal bar 63 and the vertical bar 61 are detachably connected by the bar connecting piece 64; the rod connector 64 comprises a fastener, a hoop or a barrel. In addition, the connecting part can be fixedly connected by welding or binding. The top of the vertical rod 61 is a hollow section, the height of the vertical rod 61 is adjusted by the height adjusting piece 11, a rod bottom piece 66 is connected between the vertical rod 61 and the lower connecting plate 5, the rod bottom piece 66 is fixedly connected with the lower connecting plate 5 in a detachable mode, and adjacent rod bottom pieces 66 are connected in a detachable mode. The rod bottom part 66 comprises a square-shaped, groove-shaped or I-shaped part, which is made of I-shaped steel in the embodiment, wherein the specification of the I-shaped steel is 140 multiplied by 80 multiplied by 5.5mm for No. 14I-shaped steel; the two rod bottom pieces 66 are in a group and arranged side by side; the rod bottom piece 66 is attached to the opening of the embedment.

As shown in fig. 2, the beam embedded part 8 is a steel part, the beam embedded part 8 is embedded in the beam body of the lower beam 2 and is fixedly connected with the connecting rib 10 in the beam body, and the top of the beam embedded part 8 is detachably connected with the lower connecting plate 5; the tops of the beam embedded parts 8 in the same row in the beam width direction are connected through a pre-connecting plate 9;

in the embodiment, the beam embedded parts 8 are U-shaped high-strength bolts, two ends of the opening are connected with the pre-connecting plate 9 through bolts, and the transverse distance between every two adjacent beam embedded parts 8 is 300 mm; the pre-link plate 9 is attached above the lever bottom piece 66. Two connecting ribs 10 are arranged at the corners of the beam embedded part 8 at least, and the connecting ribs 10 are arranged along the beam length direction of the lower-layer beam 2 and connected with the steel bars in the beam body. The connecting bar 10 is HRB335 steel bar, the diameter of the steel bar is not less than 18mm, the length is not less than 1500mm

As shown in fig. 3, the lower end of the adjusting member 11 is connected with the top of the supporting frame 6 by screw threads, and the upper end of the adjusting member 11 is connected with an adjusting top plate 12; the adjusting top plate 12 is connected to the lower surface of the upper beam 1. In this embodiment, the adjusting member 11 is a steel rod member, and the adjusting member 11 is in threaded connection with the vertical rod 61; the top of the adjusting piece 11 can be connected with an adjusting top plate 12 in a threaded manner or sleeved; the adjusting top plate 12 is a steel square plate. An upper backing plate 4 is also connected between the adjusting top plate 12 and the upper-layer beam 1, the upper backing plate 4 is a group of strip-shaped plates or square plates which are made of steel or wood, and the upper backing plate 4 is square steel with the thickness of 50 multiplied by 70 multiplied by 2mm in the embodiment; the upper bolster plate 4 is disposed within the lower beam surface that the upper beam 1 is designed to support.

As shown in fig. 4, the inclined rod 63 is connected with the top of the lower beam 2 through a rod connecting plate 65 by bolts; the vertical rod 61 at the outermost side or the innermost side is connected with the top of the lower-layer beam 2 through a rod connecting plate 65 by bolts; the tie-bar plates 65 in the beam width direction are integrally connected.

In this embodiment, the bracing system 7 includes a bracing body 71, bracing pieces 72 connected to two ends of the bracing body 71, and a bracing embedded piece 73 connected between the bracing piece 72 at the bottom end of the bracing body 71 and the beam-to-beam column 3. In this embodiment, the supporting body 71 is a steel rod, the supporting connecting member 72 is a steel plate, and the steel plate is a Q235 steel plate. Horizontal reinforcing pieces are further connected between the adjacent supporting bodies 71, and the horizontal reinforcing rods are steel pipes which are connected with the supporting bodies 71 through bolts or fasteners. In the embodiment, the support body 71 is made of I-steel, and the specification of the I-steel is 140 mm multiplied by 80 mm multiplied by 5.5mm for No. 14I-steel. The embedded supporting part 73 at the lower part of the supporting body 71 comprises an embedded steel plate and an L-shaped hook connected between the embedded steel plate and the beam column 3.

In addition, in the supporting structure, the distance and the type of the components can be adjusted and determined according to the thickness of the cantilever beam, the required cantilever area, the tensile bearing capacity, the shearing resistance bearing capacity and the stress of the bolt group after calculation. The supporting structure is installed from bottom to top, and the demolished part is constructed reversely.

The above description is only for the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be considered by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention.

Claims

1. A detachable supporting structure for the lower part of a large-span cantilever beam is characterized by comprising an upper-layer beam (1), a lower-layer beam (2), an inter-beam column (3) connected between the upper-layer beam (1) and the lower-layer beam (2), a supporting frame (6) connected to the top surface of the lower-layer beam (2), an adjusting piece (11) and an adjusting top plate (12) connected between the supporting frame (6) and the upper-layer beam (1), a beam embedded piece (8) connected between the supporting frame (6) and the lower-layer beam (2) and a diagonal bracing system (7) connected between the supporting frame (6) and the inter-beam column (3);

the lower end of the adjusting piece (11) is detachably connected to the top of the support frame (6), and the upper end of the adjusting piece (11) is connected with an adjusting top plate (12); the adjusting top plate (12) is connected to the lower surface of the upper beam (1);

the support frame (6) comprises vertical rods (61), cross rods (62) vertically connected with the vertical rods (61), inclined rods (63) connected between the vertical rods (61) and connected with the cross rods (62), and rod connecting plates (65) connected between the vertical rods (61) and the upper surfaces of the lower beams (2); a lower connecting plate (5) is connected below the vertical rods (61) in the same row along the length direction of the beam;

the beam embedded part (8) is embedded in the beam body of the lower beam (2) and is fixedly connected with the connecting rib (10) in the beam body, and the top of the beam embedded part (8) is detachably connected with the lower connecting plate (5); the tops of the beam embedded parts (8) in the same row in the beam width direction are connected through a pre-connecting plate (9);

the inclined strut system (7) comprises a strut body (71), strut connecting pieces (72) connected to two ends of the strut body (71) and a strut embedded part (73) connected between the strut connecting piece (72) at the bottom end of the strut body (71) and the beam-to-beam column (3).

2. The detachable support structure at the lower part of a long-span cantilever beam according to claim 1, wherein the adjusting member (11) is a rod member, and the adjusting member (11) is in threaded connection with the vertical rod (61); the top of the adjusting piece (11) is detachably connected with an adjusting top plate (12); the adjusting top plate (12) is a square plate.

3. The detachable supporting structure for the lower part of the large-span cantilever beam according to claim 2, wherein an upper backing plate (4) is further connected between the adjusting top plate (12) and the upper beam (1), and the upper backing plate (4) is a group of strip plates or square plates; the upper backing plate (4) is arranged in the range of the lower surface of the beam which is designed and supported by the upper-layer beam (1).

4. The detachable supporting structure for the lower part of the large-span cantilever beam according to claim 1, wherein the top of the vertical rod (61) is a hollow section with a height suitable for the adjusting height designed by the adjusting member (11), a rod bottom member (66) is further connected between the vertical rod (61) and the lower connecting plate (5), the rod bottom member (66) is fixedly and detachably connected with the lower connecting plate (5), and adjacent rod bottom members (66) are detachably connected.

5. The detachable support structure for the lower part of the long-span cantilever beam of claim 1, wherein the vertical rod (61) and the cross rod (62), the diagonal rod (63) and the cross rod (62), and the diagonal rod (63) and the vertical rod (61) are detachably connected through a rod connecting piece (64); the rod connector (64) comprises a fastener, a hoop or a barrel.

6. The detachable support structure for the lower part of the large-span cantilever beam according to claim 1, wherein the inclined rod (63) is detachably connected with the top of the lower beam (2) through a rod connecting plate (65); the vertical rod (61) at the outermost side or the innermost side is detachably connected with the top of the lower-layer beam (2) through a rod connecting plate (65); the bar connecting plates (65) along the beam width direction are integrally connected.

7. The detachable supporting structure for the lower part of the large-span cantilever beam disclosed by claim 1, wherein the beam embedded part (8) is a U-shaped part, and two ends of the opening are detachably connected with the pre-connecting plate (9) through bolts; the pre-connecting plate (9) is connected above the rod bottom piece (66).

8. The detachable support structure for the lower part of the large-span cantilever beam according to claim 7, wherein at least two connecting ribs (10) are arranged at the corner part inside the beam embedded part (8), and the connecting ribs (10) are arranged along the beam length direction of the lower-layer beam (2) and connected with the steel ribs in the beam body; the length of the connecting rib (10) is not less than 1500 mm.

9. The detachable lower support structure of a long-span cantilever beam according to claim 7, wherein the rod bottom member (66) is a rod member comprising a square, a trough or an i-shaped member; the two rod bottom pieces (66) are arranged in a group and are arranged side by side; a rod bottom piece (66) is connected to the opening of the embedment.

10. The detachable support structure for the lower part of a long-span cantilever beam according to claim 1, wherein the supporting bodies (71) are rod members, and horizontal reinforcing members are connected between adjacent supporting bodies (71); the support embedded part (73) at the lower part of the support body (71) comprises an embedded steel plate and an L-shaped hook connected between the embedded steel plate and the beam column (3).