CN216840774U

CN216840774U - Roof same-layer anchoring structure of concrete frame column

Info

Publication number: CN216840774U
Application number: CN202220057655.2U
Authority: CN
Inventors: 覃弘发; 徐建设; 南建林; 王璋龙
Original assignee: Shuiqing Muhua Structural Design Office Shenzhen Co ltd
Current assignee: Shuiqing Muhua Structural Design Office Shenzhen Co ltd
Priority date: 2022-01-11
Filing date: 2022-01-11
Publication date: 2022-06-28
Anticipated expiration: 2032-01-11

Abstract

The utility model relates to a capital of concrete frame post is with layer anchor structure, the fashioned anchor area in node and later stage that former concrete column, former concrete beam formed below the upper floor's lid, former concrete column intersects with former concrete beam, former concrete column periphery has increases the cross-section and disposes owner's muscle, stirrup, sets up the concrete piece below the upper floor's lid to be connected with former concrete column and former concrete beam and constitute the anchor structure. The anchoring structure fundamentally solves the problem that the column top is difficult to anchor on the same layer by reinforcing the section of the column, effectively avoids disturbance to the upper surface layer of the floor slab and the building on the basis of ensuring the anchoring length of the column ribs, and has the advantages of simple and reliable method, convenient operation and economy.

Description

Roof same-layer anchoring structure of concrete frame column

Technical Field

The utility model relates to a post of building structure increases cross-section reinforcement restoration technical field, especially relates to and adds a capital same floor anchor structure under the fixed post upper portion floor or the roofing do not allow disturbance or the damaged condition.

Background

Due to factors such as changing of using functions of building structures, long construction time, fire corrosion and the like, the concrete structural column member often has the problems of reduced bearing capacity, rigidity and stability, and the column section enlarging reinforcing technology for enlarging the section area of the original column member and increasing reinforcing bars is widely applied to the field of modern building reinforcing construction.

At present, in the column section-enlarging reinforcing technology, a column top anchoring structure of newly-added longitudinal stress steel bars mainly has two forms: firstly, at the roof panel, a newly-added stressed steel bar penetrates through the roof panel and then is bent and welded on the roof; and secondly, a structure of a concrete anchoring pier is arranged on the upper floor of the middle floor or the roof panel. The two conventional anchoring structures are located on the upper floor or the roof, the use of the upper floor is interfered in the structural construction process, or the waterproof and heat-insulating layers of the roof are damaged, and certain influence is generated on the use function and the appearance of the building after the reinforcement is completed. Secondly, the construction process will destroy the decoration of the upper floor or the heat preservation and waterproof layer of the roof, will generate additional high recovery cost, and seriously affect the use function of the upper floor or the roof.

Disclosure of Invention

To the defect that exists in the above-mentioned technique, the utility model aims to solve the technical problem that a do not influence upper portion floor or roofing is provided, realizes the novel frame capital portion anchor structure of reinforcing bar anchor at this floor. The method aims to solve the problem of anchoring a newly added vertical main rib in a concrete column with an enlarged section at the top of the column by the simplest, most convenient, economical, direct and effective method, ensure the effective transmission of bending moment and axial force of a frame beam and a frame column, improve the application range of the method for reinforcing the column with the enlarged section under various limited conditions, ensure the engineering quality and improve the construction benefit.

In order to solve the technical problem, the utility model discloses a technical scheme is: the utility model provides a roof of concrete frame post is with layer anchor structure, includes the fashioned anchor district in node and later stage that former concrete column, former concrete beam formed below the upper floor's lid, former concrete column intersects with former concrete beam, former concrete column periphery has the increase cross-section and disposes the owner muscle, sets up the concrete piece below the upper floor's lid to be connected with former concrete column and former concrete beam and constitute anchor structure.

Furthermore, horizontal tie bars and shear key grooves are arranged between the anchoring area formed in the later stage and the original frame column and the frame beam; and a roughened interface with chisels is arranged between the anchoring area formed in the later stage and the original frame column and the frame beam.

Furthermore, the horizontal tie bars are implanted into a node area formed by the original concrete column and the original concrete beam, and the depth of the implanted bars is not less than 10 times of the diameter of the horizontal tie bars.

Furthermore, the external enlarged section part of the original concrete column is synchronously formed with the anchoring area, and a newly-added vertical main rib in the enlarged section part extends into the anchoring block for anchoring, so that the anchoring block, the original nodes of the concrete column and the concrete beam form a new anchoring structure together.

Furthermore, the newly-added vertical main reinforcement is bent at the top of the anchoring block, and the horizontal length of the bending section is not less than 10 times of the diameter of the steel bar.

Further, the anchoring length of the vertical main rib in the enlarged section part of the newly-added column is the whole length in the anchoring block.

Furthermore, vertical erection ribs and horizontal hoop ribs are arranged on the periphery of the anchoring area, and tie bars are arranged.

Furthermore, the space between the vertical frame ribs is not more than 300mm, and the space between the horizontal hoop stirrups is not more than 100 mm.

Furthermore, the external shape of the anchoring area is a cube or a cylinder, the vertical height of the anchoring area is not more than the height of the adjacent concrete beam, and the horizontal side length or the diameter of the anchoring area is 1.5-2.5 times of the side length or the diameter of the original concrete column.

The utility model has the advantages that: firstly, the same-layer anchoring is realized, any operation is not required to be carried out on the upper part of a floor, any anchoring device is not required to be arranged on the upper part of the floor, and the existing covering soil, landscape, heat preservation, waterproof and decorative surface layers on the upper part of the floor are not required to be moved or damaged; secondly, the anchoring structure can utilize the original beam-column node area and form a new reinforced node area together with the original node, thereby fundamentally solving the problem that the newly added stressed steel bar cannot be anchored on the same layer of the top of the column; thirdly, the same-layer anchoring mode greatly reduces indirect construction cost, is simple and reliable to operate, has good economical efficiency, saves construction period and has remarkable benefit.

Drawings

Fig. 1 is a schematic elevation and section view of the same-layer anchoring structure on the top of the column of the present invention;

FIG. 2 is a schematic sectional view taken along line A-A of FIG. 1 showing bending of the top of the longitudinal ribs of the post;

fig. 3 is a schematic cross-sectional view a-a of the composite tie bar shown in fig. 1.

Detailed Description

The following description of the embodiments of the present invention will be described in detail with reference to the accompanying drawings, but the present invention is not limited to the embodiments, and all similar structures and similar variations thereof adopted by the present invention should be included in the protection scope of the present invention.

As shown in fig. 1 to 3, the embodiment of the utility model provides a column top is with layer anchor structure of concrete frame post, including the fashioned anchor block 3 of node and later stage of former concrete column 1, the former concrete beam 2 formation below the upper floor lid.

The original concrete column 1 and the original concrete beam 2 are molded at the same time, and a horizontal tie bar 8 and a shear key groove 9 are arranged between the anchor block 3 molded at the later stage and the original concrete column.

The external enlarged section part 4 of the original concrete column 1 is molded with the anchoring block 3 at the same time, and the vertical main reinforcement 5 of the enlarged section part extends into the anchoring block 3 for anchoring.

Vertical frame vertical ribs 6 and horizontal hoop stirrups 7 are arranged on the inner periphery of the anchoring block 3, and tie bars 8 are arranged.

The molding of the anchoring block 3 does not need to disturb the waterproof layer, the heat-insulating layer and the decorative surface layer on the upper part of the floor slab, and does not influence the building use space on the upper part of the floor slab.

Example (b): the original concrete column 1 is intersected with the original concrete beam 2, a newly-added column enlarged section 4 is formed by pouring, and concrete blocks are arranged at the top end of the column and below an upper floor to form an anchoring structure. The external shape of the anchoring block 3 is a cube or a cylinder, the vertical height of the anchoring block does not exceed the height of an adjacent concrete beam, and the horizontal side length or diameter of the anchoring block is 1.5-2.5 times of the side length or diameter of the original concrete column 1. Newly-increased vertical main reinforcement 5 in the outer increase cross section part 4 of post stretches into anchor block 3 and anchors for anchor block 3 forms new anchor structure together with concrete column 1, concrete beam 2's original node. The anchoring length of the newly added vertical main rib 5 in the column external enlarged section part 4 is the whole length in the anchoring block 3.

Example (b): the newly added vertical main reinforcement 5 must be bent at the top of the column, and the horizontal length L of the bending section should not be less than 10 times of the diameter of the reinforcement; the periphery of the newly added node area is vertically provided with vertical frame ribs 6, stirrups 7 are arranged along the horizontal ring direction, the distance between the vertical frame ribs 6 is not more than 300mm, and the distance between the stirrups 7 is not more than 100 mm; it should set up horizontal drawknot reinforcing bar 8 still, the node district that former concrete column 1 and former concrete beam 2 formed is implanted to horizontal drawknot reinforcing bar 8, and the 10 times of horizontal drawknot reinforcing bar 8 diameters are no less than to the bar planting degree of depth, guarantee the utility model discloses processing structure possess sufficient bulk rigidity and anchor effect.

Claims

1. The utility model provides a capital of concrete frame post is with layer anchor structure which characterized in that: the anchoring structure comprises a node formed by an original concrete column below an upper floor slab, an original concrete beam and a later-stage formed anchoring area, wherein the original concrete column is intersected with the original concrete beam, an enlarged cross section and main reinforcements and stirrups are arranged on the periphery of the original concrete column, a concrete block is arranged below the upper floor slab and connected with the original concrete column and the original concrete beam to form the anchoring structure.

2. A column top co-floor anchoring structure for a concrete frame column in accordance with claim 1, wherein: horizontal tie bars and shear key grooves are arranged between the anchoring area formed in the later stage and the original frame column and the frame beam; and a roughened interface with chisels is arranged between the anchoring area formed in the later stage and the original frame column and the frame beam.

3. A column top co-floor anchoring structure for a concrete frame column in accordance with claim 2, wherein: the horizontal tie bars are implanted into a node area formed by the original concrete column and the original concrete beam, and the depth of the implanted bars is not less than 10 times of the diameter of the horizontal tie bars.

4. A column top co-floor anchoring structure for a concrete frame column in accordance with claim 1, wherein: the external enlarged section part of the original concrete column and the anchoring area are molded synchronously, and a newly-added vertical main rib in the enlarged section part extends into the anchoring block for anchoring, so that the anchoring block, the original nodes of the concrete column and the concrete beam form a new anchoring structure together.

5. A column top co-floor anchoring structure for a concrete frame column in accordance with claim 4, wherein: the newly-added vertical main reinforcement is bent at the top of the anchoring block, and the horizontal length of the bending section is not less than 10 times of the diameter of the steel bar.

6. A column top co-floor anchoring structure for a concrete frame column in accordance with claim 1, wherein: the anchoring length of the vertical main rib in the enlarged cross section is the whole length in the anchoring block.

7. A column top co-floor anchoring structure for a concrete frame column in accordance with claim 1, wherein: vertical frame ribs and horizontal hoop ribs are arranged around the anchoring area, and tie bars are arranged.

8. A column top deck anchoring structure for a concrete frame column in accordance with claim 7, wherein: the space between the vertical frame vertical bars is not more than 300mm, and the space between the horizontal circumferential hooping is not more than 100 mm.

9. A column top co-floor anchoring structure for a concrete frame column in accordance with claim 1, wherein: the external shape of the anchoring area is a cube or a cylinder, the vertical height of the anchoring area is not more than the height of an adjacent concrete beam, and the horizontal side length or diameter of the anchoring area is 1.5-2.5 times of the side length or diameter of the original concrete column.