阅读说明：本技术 一种下返式悬挑架支撑梁安装结构及安装方法 (Downward-returning type cantilever frame supporting beam mounting structure and mounting method ) 是由 赵宗元 刘玉涛 陈培才 陈永伟 吴广浩 吴硕军 王佳玉 赵树山 陈赛菊 于 2021-08-26 设计创作，主要内容包括：本发明公开了一种下返式悬挑架支撑梁安装结构及安装方法,包括型钢梁,其特征在于,所述型钢梁位于楼板下方,并穿插过剪力墙的洞口,位于所述剪力墙内侧的所述型钢梁端部通过固定部件安装在所述楼板底部,所述型钢梁位于剪力墙外侧的悬臂端固装脚手架；所述剪力墙的洞口内卡置有多个卡紧部件,用于卡住所述型钢梁。本发明将型钢梁安装在楼板底部,因下返悬挑的受力结构,在剪力墙作为支撑点的部位,即使固定部件存在松动,因工字钢受力顶紧结构楼板,有效提高了施工结构的承载强度和安全系数,且剪力墙通过设置模板盒一次性浇筑出洞口,施工方法简单便捷。(The invention discloses a downward returning type cantilever frame support beam mounting structure and a mounting method, wherein the downward returning type cantilever frame support beam mounting structure comprises a section steel beam and is characterized in that the section steel beam is positioned below a floor slab and penetrates through a hole of a shear wall, the end part of the section steel beam positioned on the inner side of the shear wall is mounted at the bottom of the floor slab through a fixing part, and a cantilever end of the section steel beam positioned on the outer side of the shear wall is fixedly provided with a scaffold; and a plurality of clamping components are clamped in the opening of the shear wall and used for clamping the section steel beam. According to the invention, the section steel beam is arranged at the bottom of the floor slab, and the structural floor slab is tightly jacked due to the stress of the I-steel even if the fixing part is loosened at the position of the shear wall serving as the supporting point due to the downward-returning-overhanging stress structure, so that the bearing strength and the safety coefficient of the construction structure are effectively improved, and the hole is formed in the shear wall through one-step pouring of the template box, so that the construction method is simple and convenient.)

1. A downward-returning cantilever support beam mounting structure comprises a section steel beam (3), and is characterized in that the section steel beam (3) is positioned below a floor slab (2) and penetrates through a hole of a shear wall (4), the end part of the section steel beam (3) positioned on the inner side of the shear wall (4) is mounted at the bottom of the floor slab (2) through a fixing part, and a scaffold (1) is fixedly mounted at the cantilever end of the section steel beam (3) positioned on the outer side of the shear wall (4); a plurality of clamping parts (5) are clamped in the opening of the shear wall (4) and used for clamping the section steel beam (3).

2. A backward cantilever support beam mounting structure according to claim 1, wherein the fixing member comprises a screw (9) and a lower fixing plate (10), the lower fixing plate (10) is disposed below the section steel beam (3), the screw (9) passes through the floor (2) and the lower fixing plate (10) and is fastened by a nut, and a support cushion (8) is disposed between the floor (2) and the section steel beam (3).

3. A walk-back cantilever support beam mounting structure according to claim 1, wherein the clamping member (5) is a wedge-shaped block.

4. A reentry cantilever support beam mounting structure according to claim 2, wherein a backing plate (7) is provided between the support mat (8) and the floor (2).

5. A reentry cantilever support beam mounting structure according to claim 2, wherein the top end of the bolt is fixedly provided with an upper fixing plate (6).

6. A method of installing a walk-back cantilever support beam installation structure according to any one of claims 1 to 5, comprising the steps of:

the method comprises the following steps: reserving a hole for the section steel beam (3) to pass through when the shear wall (4) is poured;

step two: penetrating the section steel beam (3) through the opening of the shear wall (4), and installing a wedge block at the gap between the section steel beam (3) and the opening of the shear wall (4);

step three: tensioning and fixedly mounting the end part of the section steel beam (3) positioned on the inner side of the shear wall (4) at the bottom of the floor slab (2) through a screw (9), and placing a supporting cushion block (8) between the section steel beam (3) and the floor slab (2);

step four: the cantilever end of the section steel beam (3) positioned on the outer side of the shear wall (4) is provided with a scaffold (1).

7. The method for installing a downward-returning type cantilever support beam installation structure according to claim 6, wherein in the first step, when the shear wall (4) formwork is erected, a formwork box is arranged inside the formwork to form the hole.

8. The method for installing a downward-returning type cantilever support beam mounting structure according to claim 6, wherein in the first step, if the structural beam is encountered, a PVC sleeve reserved bolt hole is installed at the structural beam part of the floor (2) for double-channel anchoring.

9. The method for installing a downward-returning type cantilever support beam installation structure according to claim 8, wherein in the first step, if the structural beam is an upward-returning beam, PVC sleeves are reserved and anchor bolts are installed when the floor slab (2) at the bottom of the upward-returning beam is poured, and then the upward-returning beam at the upper part of the floor slab (2) is poured.

Technical Field

The invention belongs to the field of building construction, and particularly relates to a downward-returning type cantilever frame supporting beam mounting structure and a downward-returning type cantilever frame supporting beam mounting method.

Background

The I-steel cantilever beam is used as a scaffold support part commonly used in engineering, is a simple facility used in buildings and is divided into two types of cantilever with one cantilever on each layer and cantilever with multiple layers. The shaped steel beam of the cantilever scaffold is usually installed on the upper part of a floor slab and fixed through an embedded anchor bolt or a turnover anchor, and the method has the following defects: 1. the supporting beam is arranged on a structural floor slab, and the anchor bolt or the anchoring part bears larger load and is easy to damage, so that the whole structure has lower bearing strength and large potential safety hazard; 2. holes for profile steel to pass through are formed in the upper-layer beam steel bar positions, so that steel bars in the upper-layer shear wall can be damaged, and the structural safety is influenced; 3. the upper shear wall formwork needs to be provided with a formwork opening at the I-shaped steel part, and the formwork construction difficulty is high.

Disclosure of Invention

The invention provides a downward-returning type cantilever support beam mounting structure and a downward-returning type cantilever support beam mounting method, which are used for solving the problems in the prior art.

The invention provides a downward returning type cantilever frame support beam mounting structure which comprises a section steel beam and is characterized in that the section steel beam is positioned below a floor slab and penetrates through a hole of a shear wall, the end part of the section steel beam positioned on the inner side of the shear wall is mounted at the bottom of the floor slab through a fixing part, and a scaffold is fixedly mounted at the cantilever end of the section steel beam positioned on the outer side of the shear wall; and a plurality of clamping components are clamped in the opening of the shear wall and used for clamping the section steel beam.

Furthermore, the fixing part comprises a screw and a lower fixing plate, the lower fixing plate is arranged below the section steel beam, the screw penetrates through the floor and the lower fixing plate and is fastened through a nut, and a supporting cushion block is arranged between the floor and the section steel beam.

Further, the clamping part is a wedge-shaped block.

Further, a base plate is arranged between the supporting cushion block and the floor slab.

Furthermore, an upper fixing plate is fixedly arranged at the top end of the bolt.

The mounting method of the downward-returning type cantilever support beam mounting structure comprises the following steps:

the method comprises the following steps: reserving a hole for the section steel beam to pass through when the shear wall is poured;

step two: penetrating the section steel beam through the opening of the shear wall, and mounting a wedge block at the gap between the section steel beam and the opening of the shear wall;

step three: the end part of the section steel beam positioned on the inner side of the shear wall is fixedly arranged at the bottom of the floor slab through screw tightening, and a supporting cushion block is arranged between the section steel beam and the floor slab;

step four: and a scaffold is arranged at the cantilever end of the section steel beam positioned at the outer side of the shear wall.

Further, in the first step, when the shear wall formwork is erected, a formwork box is arranged inside the formwork to form the opening.

Further, in the first step, if a structural beam is encountered, bolt holes are reserved in the structural beam of the floor slab through installation of PVC sleeves, and double-channel anchoring is performed.

Further, in the first step, if the structural beam is a return beam, a PVC sleeve is reserved and an anchor bolt is installed when a floor slab at the bottom of the return beam is poured, and then the return beam at the upper part of the floor slab is poured.

The invention has the advantages and positive effects that:

1. in this back-down cantilever frame supporting beam mounting structure, install shaped steel roof beam in the floor bottom, because of the atress structure of returning the cantilever down, at the position that the shear force wall was regarded as the strong point, even fixed part exists not hard up, because of the tight structure floor of I-steel atress top, effectively improved construction structure's bearing strength and factor of safety.

2. This turn over a supporting beam mounting structure's of encorbelmenting frame shear wall entrance to a cave width is less than shear wall reinforcing bar interval down, consequently can not destroy original shear wall reinforcing bar structure, effectively guarantees shear wall's intensity and construction safety.

3. The downward-returning type cantilever frame support beam mounting structure and the construction method have the advantages that the screw rod is positioned at the bottom of the floor slab, and the inspection is convenient.

4. The stress structure of the downward cantilever effectively improves the bearing strength and the safety factor, and the shear wall is provided with the template box to pour the hole at one time, so that the construction method is simple and convenient.

Drawings

FIG. 1 is a schematic view of the mounting structure of the present invention;

FIG. 2 is a schematic view of the structure of the fixing member of the present invention;

fig. 3 is a schematic perspective view of the present invention.

In the figure, 1 is a scaffold, 2 is a floor, 3 is a section steel beam, 4 is a shear wall, 5 is a clamping part, 6 is an upper fixing plate, 7 is a backing plate, 8 is a supporting cushion block, 9 is a screw rod, and 10 is a lower fixing plate.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The invention provides a downward returning type cantilever support beam mounting structure which comprises a section steel beam 3, wherein the section steel beam 3 is positioned below a floor slab 2 and penetrates through a hole of a shear wall 4, the end part of the section steel beam 3 positioned on the inner side of the shear wall 4 is mounted at the bottom of the floor slab 2 through a fixing part, and a scaffold 1 is fixedly mounted at the cantilever end of the section steel beam 3 positioned on the outer side of the shear wall 4; and a plurality of clamping parts 5 are clamped in the opening of the shear wall 4 and used for clamping the section steel beam 3. The shear wall 4 hole and the section steel beam 3 are arranged in an interference mode, and the clamping part 5 is used for filling a gap between the hole and the section steel beam 3 and further fixing the section steel beam 3.

The fixing part comprises a screw rod 9 and a lower fixing plate 10, the lower fixing plate 10 is arranged below the section steel beam 3, the screw rod 9 penetrates through the floor slab 2 and the lower fixing plate 10 and is fastened through a nut, and a supporting cushion block 8 is arranged between the floor slab 2 and the section steel beam 3. The end of shaped steel roof beam 3 encorbelments receives 1 decurrent power of scaffold frame to 4 mouths of a hole of shear force wall are the fulcrum, and the shaped steel roof beam 3 other end is to the trend of 2 tight tops of floor, through 8 chucking shaped steel roof beams 3 of lip block.

The clamping part 5 is a wedge-shaped block.

And a base plate 7 is arranged between the supporting cushion block 8 and the floor slab 2 and used for increasing the contact area between the cushion block 8 and the floor slab 2 and preventing the floor slab 2 from being damaged.

The top end of the bolt is fixedly provided with an upper fixing plate 6. The upper fixing plates 6 are installed in pairs, and two screws 9 are welded at the bottom of one upper fixing plate 6.

The mounting method of the mounting structure of the downward-returning type cantilever support beam comprises the following steps:

the method comprises the following steps: reserving a hole for the section steel beam 3 to pass through when the shear wall 4 is poured;

step two: the section steel beam 3 penetrates through the hole of the shear wall 4, and a wedge block is installed at the gap between the section steel beam 3 and the hole of the shear wall 4;

step three: the end part of the section steel beam 3 positioned on the inner side of the shear wall 4 is tensioned and fixedly arranged at the bottom of the floor slab 2 through a screw 9, and a supporting cushion block 8 is arranged between the section steel beam 3 and the floor slab 2;

step four: the structural steel beam 3 is positioned at the cantilever end outside the shear wall 4 and is provided with a scaffold 1.

In the first step, when the shear wall 4 formwork is erected, a formwork box is arranged inside the formwork to form the opening.

In the first step, if meeting the structural beam, a bolt hole is reserved in the structural beam part of the floor slab 2 through installation of a PVC sleeve, and double-channel anchoring is performed.

In the first step, if the structural beam is a return beam, a PVC sleeve is reserved and an anchor bolt is installed when the floor slab 2 at the bottom of the return beam is poured, and then the return beam at the upper part of the floor slab 2 is poured.

According to the installation structure and the construction method, the section steel beam is installed at the bottom of the floor slab, and due to the fact that the lower cantilever stress structure is used as a supporting point, even if the fixing part is loosened, the structural floor slab is tightly jacked due to stress of the I-shaped steel, and the bearing strength and the safety coefficient of the construction structure are effectively improved.

The width of the opening of the shear wall of the mounting structure and the construction method is smaller than the distance between the steel bars of the shear wall, so that the original steel bar structure of the shear wall cannot be damaged, and the strength and the construction safety of the shear wall are effectively ensured.

The screw rod of the installation structure and the construction method is positioned at the bottom of the floor slab, so that the installation structure and the construction method are convenient to inspect.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.