CN214615591U

CN214615591U - Reinforced concrete frame joist pulls out post and reforms transform reinforced structure

Info

Publication number: CN214615591U
Application number: CN202023269047.8U
Authority: CN
Inventors: 李洪波; 吕杰; 马腾龙; 王宇; 张晓彤
Original assignee: PowerChina Central China Electric Power Engineering Corp Ltd; PowerChina Henan Electric Power Survey and Design Institute Co Ltd
Current assignee: PowerChina Central China Electric Power Engineering Corp Ltd; PowerChina Henan Electric Power Survey and Design Institute Co Ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-11-05
Anticipated expiration: 2030-12-30

Abstract

The utility model relates to a reinforced concrete frame joist pulls out post transformation reinforced structure, including the frame post, with the frame roof beam fixed at frame post top and with frame post, frame roof beam fixed connection's steel truss, the steel truss includes fixed connection at the last chord member of frame roof beam lower part, with frame post fixed connection's lower chord member and fix a plurality of web members between last chord member and lower chord member, the web member end to end forms a plurality of isosceles triangle with last chord member and lower chord member, and whole structure has not only solved the outer problem of gluing steel sheet method bearing capacity on the low side of roof beam, has also solved increase cross-section method bar planting problem that is many, concrete placement is difficult, wet work volume is big, adaptation building large-span, the transformation demand in big space that can be fine, and it is convenient to be under construction, has shortened the time limit for a project, has reduced engineering cost.

Description

Reinforced concrete frame joist pulls out post and reforms transform reinforced structure

Technical Field

The utility model relates to an industry and civil construction joist pull out post transformation technical field, specific is a reinforced concrete frame joist pulls out post transformation reinforced structure.

Background

The structural modification of the house is divided into a plurality of types, such as main body bearing structure modification, auxiliary structure modification, enclosure structure modification and the like, wherein the main body bearing structure modification technology is the most complex, the modified structure often changes the stress state of structural members, and some of the structural members even possibly influence the safety degree of the original structure, so the structural modification needs to be careful and careful.

In the project of reforming the main body bearing structure, the reforming of the joist pull column belongs to a project with great difficulty, on one hand, the use of other areas of a building can not be influenced in the reforming process, namely, the structure can not be completely disassembled; on the other hand, the column pulling area has large floor holes, which affect the rigidity distribution of the structure, and the column pulling area must be structurally reinforced, and often the structure outside the area also needs to be reinforced. Therefore, the calculation amount of the structure for modifying the joist by pulling the column is extremely large, the modified structure is ensured to have enough bearing capacity, the floor is ensured not to be deformed excessively after pulling the column, otherwise, the sensory safety of a user is influenced, and the existing decoration of the building is damaged. In the existing method for modifying the reinforced concrete structure, the method of adhering steel plates outside beams is only suitable for the structure with a small amount of load increase; the method for increasing the cross section has the defects of more bar planting quantity, difficult concrete pouring, large amount of wet operation and low construction speed, and the two methods cannot meet the requirements of large-span and large-space transformation.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to the technical problem who exists among the prior art, a reinforced concrete frame joist pulls out post and reforms transform reinforced structure is provided.

The technical scheme of the utility model specifically does:

the utility model provides a reinforced concrete frame joist pulls out post and reforms transform reinforced structure, includes the frame post, with frame post top fixed frame roof beam and with frame post, frame roof beam fixed connection's steel truss, the steel truss include fixed connection at the last chord member of frame roof beam lower part, with frame post fixed connection's lower chord member and fix a plurality of web members between last chord member and lower chord member, the web member end to end forms a plurality of isosceles triangle with last chord member and lower chord member.

The frame post has a plurality ofly, need tear frame post open with frame roof beam and steel truss fixedly connected with between the frame post, the part that need tear frame post open and be located the lower chord top is the reservation part, reservation part bottom is fixed with iron plate, reservation part side is fixed with buries indisputable, iron plate with bury indisputable fixed connection.

The buried iron is fixedly connected with the upper chord and the lower chord.

The structural adhesive is coated between the upper chord and the frame beam and is fixedly connected with the frame beam through embedded bars.

Compared with the prior art, the reinforced concrete frame joist pull-out column reconstruction and reinforcement structure provided by the utility model has the advantages that the steel truss is arranged above the frame beam to be disassembled, the structural load on the upper part of the frame column to be disassembled is transferred to the steel truss, the upper structure is supported by the steel truss, and the frame column and the corresponding floor slab below the steel truss are disassembled; the web members of the steel truss are connected end to end, and a plurality of isosceles triangles are formed between the web members, the upper chord member and the lower chord member, so that the stress between the upper chord member and the lower chord member is balanced, and the stability of the steel truss is improved; only the reserved part above the lower chord is left after the lower part of the frame column needs to be dismantled, the iron plate fixed at the bottom of the reserved part is welded with the embedded iron on the side surface, and the embedded iron is welded with the upper chord and the lower chord, so that the firmness between the steel truss and the upper part of the frame column needing to be dismantled is further enhanced, and the reliability of the structure is improved; the whole structure not only solves the problem that the bearing capacity of the beam-outside steel plate bonding method is low, but also solves the problems that the number of the steel bars is large, the concrete pouring is difficult and the wet workload is large by the cross section increasing method, can well adapt to the reconstruction requirements of large span and large space of the building, is convenient and fast to construct, shortens the construction period and reduces the construction cost.

Drawings

Fig. 1 is a schematic structural diagram of a reinforced concrete frame joist before column pulling modification and reinforcement.

Fig. 2 is a schematic structural diagram of the present invention.

Fig. 3 is a schematic diagram of a frame column iron-burying structure.

Fig. 4 is a structural schematic diagram of the upper chord bar planting bar.

Wherein 1 is a frame column; 2 is a frame beam; 3, a frame column needs to be disassembled; 4, a frame beam needs to be disassembled; 5 is a steel truss; 6 is a lower chord; 7 is an upper chord; 8 is a web member; 9 is buried iron; 10 is an iron plate; 11 is a through bolt; 12 is bar planting; 13 is a structural adhesive; 14 is the basis.

Detailed Description

The utility model discloses do not receive the restriction of following embodiment, can be according to the utility model discloses a technical scheme and actual conditions determine concrete implementation.

As shown in fig. 1-4, the utility model provides a reinforced concrete frame joist pulls out post and reforms transform reinforced structure, including frame post 1, frame roof beam 2, need tear remaining part A, the steel truss 5 of 3 upper ends of frame post open, 1 top fixedly connected with frame roof beam 2 of frame post. As shown in fig. 1, the frame columns 3 to be dismantled between the frame columns 1 are column structures to be dismantled, only the upper ends of the frame columns 3 to be dismantled are left after the dismantling, and the frame beams 4 to be dismantled below the frame beams 2 are beam structures to be dismantled, which need to be dismantled entirely. All be fixed with on the upper end side of frame post 1 and need tearing frame post 3 and bury indisputable 9, will bury indisputable 9 and fix in frame post 1 and need tear frame post 3 upper end through to wearing bolt 11, increase and bury the firm degree that indisputable 9 is fixed. The steel truss 5 is fixedly connected to the lower portion of the frame beam 2 above the frame beam 4 to be disassembled, the steel truss 5 comprises an upper chord member 7, a lower chord member 6 and a web member 8, the upper chord member 7 and the lower chord member 6 are made of H-shaped steel, and the web member 8 is made of round steel tubes or square steel tubes. Upper chord 7 and frame roof beam 2 pass through bar planting 12 fixed connection, and the coating has structural adhesive 13 between upper chord 7 and the frame roof beam 2, and lower chord 6 is located the below of upper chord 7. The two ends of the upper chord 7 and the lower chord 6 are respectively fixedly connected with the embedded iron 9 and can be welded, the two ends of the lower chord 6 are fixed on the side faces of the frame column 1 or the frame column 3 to be disassembled through the embedded iron, the web members 8 are fixed between the upper chord 7 and the lower chord 6, the number of the web members 8 is multiple, the web members 8 are connected end to end and are obliquely fixed between the upper chord 7 and the lower chord 6 at a certain angle, and a plurality of isosceles triangles are formed between the web members 7 and the lower chord 6, so that the stress between the upper chord 7 and the lower chord 6 is balanced, the stability and the bearing capacity of the steel truss 5 are improved, and the bearing capacity of the whole structure is improved.

Further, an iron plate 10 is fixed at the bottom of the reserved part a of the frame column 3 to be disassembled, which is located above the lower chord 6, and the iron plate 10 is fixedly connected with the embedded iron 9, which can be welded. Through the fixed connection of the iron plates 10 and the embedded iron 9, the connection strength between the steel truss 5 and the reserved part A above the frame column 3 to be disassembled is enhanced, and the original load acting on the frame column 3 to be disassembled is better transferred to the steel truss 5. The part of the frame column 3 below the lower chord 6 and the frame beam 4 to be dismantled are dismantled after the steel truss 5 is transformed and reinforced, and the part of the frame column 3 below the lower chord 6 can be dismantled by cutting.

The post transformation reinforced structure is pulled out to reinforced concrete frame joist after reforming transform has increased steel truss 5 on the basis of original structure, and the frame post 3 is torn open to the needs that is located 5 below the steel truss and is cuted and demolishd, and the frame roof beam 4 is torn open to the needs that is located 5 below the steel truss also is demolishd, has formed the big space of lower part, has satisfied the transformation demand of large-span, big space, and the structure after having satisfied simultaneously reforming transform has sufficient bearing capacity.

While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the general inventive concept, and it is intended to cover all such changes and modifications as fall within the true spirit and scope of the invention.

Claims

1. The utility model provides a reinforced concrete frame joist pulls out post and reforms transform reinforced structure, includes frame post (1), with frame post (1) fixed frame roof beam (2) in top and with frame post (1), frame roof beam (2) fixed connection's steel truss (5), its characterized in that: steel truss (5) including fixed connection in last chord member (7) of frame roof beam (2) lower part, with frame post (1) fixed connection's lower chord member (6) and fix a plurality of web members (8) between last chord member (7) and lower chord member (6), web member (8) end to end forms a plurality of isosceles triangle with last chord member (7) and lower chord member (6).

2. A reinforced concrete frame joist post-pulling reforming reinforcing structure as claimed in claim 1, wherein: the number of frame post (1) has two at least, need tear frame post (3) open with frame roof beam (2) and steel truss (5) fixedly connected with between frame post (1), the part that need tear frame post (3) and be located lower chord member (6) top is for remaining part (A), part (A) bottom is fixed with iron plate (10), part (A) side is fixed with buries indisputable (9), iron plate (10) with bury indisputable (9) fixed connection.

3. A reinforced concrete frame joist post-pulling reforming reinforcing structure as claimed in claim 2, wherein: the buried iron (9) is fixedly connected with the upper chord (7) and the lower chord (6).

4. A reinforced concrete frame joist post-pulling reforming reinforcing structure as claimed in claim 1, wherein: and structural adhesive (13) is coated between the upper chord (7) and the frame beam (2) and is fixedly connected with the frame beam through embedded bars (12).