Attached type scaffold construction method applied to plate surface retrofit

Abstract

The invention discloses a construction method of an attached scaffold applied to board retrofit. The construction method comprises the following steps: pre-burying a through-wall screw rod and a small hanging seat; a lattice type special stand column composed of a first standard section and a second standard section is installed, and the lattice type special stand column is in butt joint connection through bolts and supported and fixed through oblique rigid pull rods; one end of the horizontal attached wall is connected with the attached scaffold through an attached wall support, and the middle of the horizontal attached wall is connected with the floor plate through a through-wall screw. The through-wall screw is an M32 medium carbon steel screw and is pre-buried in a specific position. The three rigid pull rods are each of a nested structure with the telescopic interior, and the length of each rigid pull rod can be adjusted to be matched with the special stand column. The horizontal attached wall is of a hollow profile steel structure. Stable pull joints are provided for the scaffold through horizontal wall attaching, the specially-made stand columns can be flexibly combined to adapt to various story heights, steel is saved, the rigid pull rods are convenient to adjust, operation is easy, safety performance is good, and the scaffold construction problem caused by plate face retreating and empty layers is effectively solved.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and particularly to an attached scaffolding construction method applied to slab setbacks. Background Art

[0002] In recent years, the urbanization process has been accelerating continuously, the construction land has become increasingly tense, and the construction scale of commercial high-rise buildings has been expanding day by day. Under this background, people's aesthetic standards for the exterior facade of buildings have been rising continuously. The exterior facades of many buildings show unique designs. As the floors increase from bottom to top, the slabs gradually set back and retract inward, and some floors are provided with overhead refuge floors.

[0003] However, in the current application process of attached scaffolding technology, the traditional method of relying only on the embedded parts on the main structure slab surface to set the support points is unable to cope when the vertical spacing is too large due to setbacks and overhead floors, and it is difficult to meet the requirements for setting support points. This situation seriously hinders the normal climbing of the attached scaffolding frame. How to overcome the construction problems of the setback of the exterior facade slab and the inability to set embedded support points in the overhead floor in the main structure, and then ensure the smooth operation of the attached scaffolding has become an urgent and key problem to be solved in the field of building construction. Summary of the Invention

[0004] The purpose of the present invention is to provide an attached scaffolding construction method applied to slab setbacks, which solves the problem that due to slab setbacks and overhead floors, the spacing of the scaffolding support points is too large to set embedded support points, and thus the frame cannot be used normally.

[0005] In order to achieve the above purpose, the present invention is realized through the following technical solutions: an attached scaffolding construction method applied to slab setbacks, including the following steps:

[0006] Step S1, embedding through-wall bolts and embedded small hanging seats: Before the concrete is poured on the slab surface, use a laser level to locate the holes for embedding through-wall bolts and the positions of the embedded small hanging seats, and use fixed clamps to fix the through-wall bolts and the embedded small hanging seats respectively;

[0007] Step S2, installing lattice special columns: In the vertical position, install lattice special columns on the floor slab that has been poured. Fix the base through a fixing device. The lattice special column is composed of a plurality of first standard sections and a plurality of second standard sections; according to the floor height, use bolts to connect the first standard section and the second standard section for the attachment requirements of the attached climbing scaffolding at different floor heights; at the same time, use diagonal rigid tie rods to support and fix the lattice special columns;

[0008] Step S3: Install the horizontal attachment wall. Press the lattice-type horizontal attachment wall on the already erected lattice-type special column. One end of the horizontal attachment wall is connected to the attached scaffold using an attachment support, and the middle part of the horizontal attachment wall is connected to the main structure floor slab using a wall-piercing screw.

[0009] Further, as an improvement to the technical solution of the present invention, the wall-piercing screw is an M32 wall-piercing screw; the wall-piercing screw is pre-embedded at the root position of the lattice-type special column, the middle position of the horizontal attachment wall, and the root position of the rigid tie rod.

[0010] Further, as an improvement to the technical solution of the present invention, the wall-piercing screw is mainly composed of high-strength and wear-resistant medium carbon steel, with a carbon content of 0.25 - 0.28%.

[0011] Further, as an improvement to the technical solution of the present invention, the pre-embedded small hanging seat is composed of an M32 wall-piercing screw, a screw backing plate, a base gasket, and a butt joint interface with a nut slot. The rigid tie rod is connected to the M32 wall-piercing screw.

[0012] Further, as an improvement to the technical solution of the present invention, the number of rigid tie rods is three. The surface of the rigid tie rod itself has round holes with a diameter of 10 - 20 mm, and it is an internally telescopic nested structure system. The rigid tie rod adjusts the length of the rod using the end rotating movable head to adapt to the height requirement of the lattice-type special column. The three rigid tie rods form a stable triangular system with the horizontal attachment wall and the lattice-type special column.

[0013] Further, as an improvement to the technical solution of the present invention, the number of horizontal attachment walls is two. The horizontal attachment wall is a hollow steel structure. One end is a free end and is bolted to the pre-embedded M32 wall-piercing screw, and the other end is connected to the attached scaffold using an attachment support.

[0014] Further, as an improvement to the technical solution of the present invention, when the distance of the slab setback is large, profiled steel sheets are laid between the two main steel beams, and the main steel beams are anchored to the lattice-type special column and the horizontal attachment wall using hoop channel steel and pre-embedded M32 wall-piercing screws.

[0015] Further, as an improvement to the technical solution of the present invention, the special column assembly includes: a φ48X3.2 steel pipe, a 10 mm steel plate, and an 80 mm×80 mm×6 mm angle steel, which are spliced together using docking bolts for different standard sections (the first standard section is 3 meters, and the second standard section is 1.5 meters). The φ48X3.2 steel pipe serves as the web of the column, and the 10 mm steel plate provides connection points and attachment surfaces for the rigid tie rod and the diagonal bracing of the column.

[0016] As a further improvement of the technical solution of the present invention, the wall-attached device includes: a hollow steel structure and a wall-attached support; the wall-attached support is installed at one end of the horizontal wall-attached steel structure and is connected to the attached scaffolding; a special column and the horizontal wall-attached are vertically tied with an M32 wall-piercing screw rod, and the other end is connected to the floor slab of the existing building structure with an M32 wall-piercing screw rod.

[0017] As a further improvement of the technical solution of the present invention, the tying and fixing assembly includes: a rigid tie rod, a hoop channel steel, a wall-piercing bolt, a pre-embedded small hanging seat and a wall-attached support; one end of the rigid tie rod is fixed to the floor layer of the existing building structure through the wall-piercing bolt and the pre-embedded small hanging seat, and the other end ties the special column through the wall-piercing bolt.

[0018] Advantages of the present invention:

[0019] 1. The setting of the horizontal wall attachment in the present invention is equivalent to lengthening the floor slab of the existing building structure. The special column is installed on the horizontal wall attachment, which can provide a stable and reliable tie point for the attached scaffolding during the lifting process when there is a setback or overhead condition on the building structure slab surface;

[0020] 2. The setting of the steel lattice special column in the present invention can realize the combined connection in the vertical direction by using the first standard section and the second standard section, and can be flexibly applied to various building floor heights. Compared with the traditional channel steel column, the angle steel column occupies less space and has good general performance, and significantly saves steel while meeting the force requirements;

[0021] 3. The setting of the rigid tie rod in the present invention can adjust the length of the rigid tie rod by using the uniformly distributed round holes with a diameter of 10-20 mm and the end rotating movable head thereof, and can be adjusted in a matching manner with the steel lattice special column structure at different heights. The operation is simple, the disassembly is convenient, and the safety performance is good. Description of the drawings

[0022] By reading the detailed description of the non-restrictive embodiments with reference to the following drawings, other features, objects and advantages of the present invention will become more obvious:

[0023] Figure 1 It is a schematic diagram of the overhead layer of a construction method of an attached scaffolding applied to a slab setback according to an embodiment of the present invention.

[0024] Figure 2 It is a schematic diagram of the slab setback and the overhead layer of a construction method of an attached scaffolding applied to a slab setback according to an embodiment of the present invention.

[0025] In the attached drawings: 1 - Special column; 2 - Horizontal wall attachment; 3 - Rigid tie rod; 4 - M32 wall-piercing screw; 5 - Embedded small hanging seat; 6 - Wall attachment support; 7 - Attached scaffolding; 8 - Main steel beam; 9 - Profiled steel sheet (existing floor slab); 10 - Hoop channel steel. Detailed implementation mode

[0026] The present invention will be described in detail below in conjunction with the attached drawings and specific embodiments. Here, the schematic embodiments and descriptions of the present invention are used to explain the present invention, but do not limit the present invention.

[0027] It should be noted that all directional indications (such as up, down, left, right, front, back, upper end, lower end, top, bottom...) in the embodiments of the present invention are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the attached drawings). If this specific posture changes, the directional indications will also change accordingly.

[0028] In the present invention, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meaning of the above terms in the present invention can be understood according to specific circumstances.

[0029] In addition, in the present invention, descriptions such as "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" can explicitly or implicitly include at least one such feature; in addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0030] The following combines the attached Figure 1 and the attached Figure 2 to further elaborate on the present invention.

[0031] The present invention carefully constructs an attached scaffolding construction method applied to the slab setback, including the following steps:

[0032] Step S1, Embedding Wall-Piercing Screws and Embedded Small Hanging Seats: Before the concrete is poured on the slab surface, use a laser level to locate the holes for the wall-piercing screws and the positions of the embedded small hanging seats, and use fixed fixtures to fix the wall-piercing screws and the embedded small hanging seats respectively;

[0033] Step S2, Installing Lattice-Type Special Columns: In the vertical position, erect lattice-type special columns on the floor slab that has been poured and completed, and fix the base through a fixing device. The lattice-type special columns are composed of multiple first standard sections and multiple second standard sections; according to the floor height, use bolts to connect the first standard section and the second standard section for the attachment requirements of the attached climbing formwork at different floor heights; at the same time, use diagonal rigid tie rods to support and fix the lattice-type special columns;

[0034] Step S3, Installing Horizontal Wall Attachments: On the lattice-type special columns that have been erected, press the lattice-type horizontal wall attachments. One end of the horizontal wall attachment is connected to the attached formwork through a wall attachment support, and the middle part of the horizontal wall attachment is connected to the main structure floor slab through a wall-piercing screw.

[0035] Specifically, in the solution of this embodiment, the wall-piercing screw is an M32 wall-piercing screw; the wall-piercing screw is embedded at the root position of the lattice-type special column, the middle position of the horizontal wall attachment, and the root position of the rigid tie rod.

[0036] Specifically, in the solution of this embodiment, the wall-piercing screw is mainly composed of high-strength and wear-resistant medium carbon steel, with a carbon content of 0.25 - 0.28%.

[0037] Specifically, in the solution of this embodiment, the embedded small hanging seat is composed of an M32 wall-piercing screw, a screw backing plate, a base gasket, and a butt joint interface with a nut slot, and the rigid tie rod is connected to the M32 wall-piercing screw.

[0038] Specifically, in the solution of this embodiment, the number of the rigid tie rods is three, and its surface has round holes with a diameter of 10 - 20 mm. It is an internally telescopic nested structure system. The rigid tie rod uses an end rotating movable head to adjust the length of the rod to adapt to the height requirements of the lattice-type special column. The three rigid tie rods, together with the horizontal wall attachment and the lattice-type special column, form a stable triangular system.

[0039] Specifically, in the solution of this embodiment, the number of the horizontal wall attachments is two. The horizontal wall attachment is a hollow steel structure. One end is a free end and is bolted to the embedded M32 wall-piercing screw, and the other end is connected to the attached formwork through a wall attachment support.

[0040] Specifically, in the solution of this embodiment, when the retreat distance of the plate surface is large, profiled steel sheets are laid between two main steel beams, and the main steel beams are anchored to the lattice special columns and horizontal wall attachments by hoop channel steels and embedded M32 wall-piercing screw rods.

[0041] Specifically, in the solution of this embodiment, the special column assembly includes: φ48X3.2 steel pipes, 10mm steel plates, and 80mm×80mm×6mm angle steels, which are spliced by combining different standard sections (the first standard section is 3 meters, and the second standard section is 1.5 meters) with butt bolts. The φ48X3.2 steel pipes serve as the webs of the columns, and the 10mm steel plates provide connection points and attachment surfaces for the rigid tie rods and the diagonal ties of the columns.

[0042] Specifically, in the solution of this embodiment, the wall attachment device includes: a hollow steel structure and a wall attachment support; the wall attachment support is installed at one end of the horizontal wall attachment steel structure and is connected to the attached scaffold; the special column and the horizontal wall attachment are vertically tied with M32 wall-piercing screw rods, and at the other end, M32 wall-piercing screw rods are used to connect to the floor slab of the existing building structure.

[0043] Specifically, in the solution of this embodiment, the tie and fixing assembly includes: a rigid tie rod, a hoop channel steel, a wall-piercing bolt, an embedded small hanging seat, and a wall attachment support; one end of the rigid tie rod is fixed to the floor surface layer of the existing building structure through the wall-piercing bolt and the embedded small hanging seat, and the other end is used to tie the special column through the wall-piercing bolt.

[0044] As Figure 1-2 shown, the present invention provides an attached scaffold construction method applied to the plate surface retreat, including the following steps:

[0045] S1. Install the horizontal wall attachment 2, the wall attachment support 6, the M32 wall-piercing screw rod 4, and the embedded small hanging seat 5:

[0046] S1.1. At an empty place, connect the wall attachment support 6 and the horizontal wall attachment 2 with bolts;

[0047] S1.2. Before the concrete of the plate surface is poured, use a laser level to locate the holes for the embedded M32 wall-piercing screw rod 4 and the positions of the embedded small hanging seats 5, and use fixing clips to fix them to the floor reinforcement bars of the floor surface respectively;

[0048] S1.3. Pour the floor slab concrete;

[0049] S1.4. On the already poured floor slab, fix the horizontal wall attachment 2 at the position of the embedded M32 wall-piercing screw rod 4, and use bolts to fix the wall attachment support 6 on the horizontal wall attachment 2 to the guide rail of the attached scaffold 7;

[0050] S1.5. For the working condition of the stepped floor slab surface, lay profiled steel sheets 9 on the main steel beam 8, which is equivalent to lengthening the floor slab of the existing building structure. The special columns are erected on the profiled steel sheets 9, and the connection of the special columns 1 and the horizontal wall attachment 2 is fixed by using the hoop channel steel 10 and the M32 wall-piercing screw 4;

[0051] S2. Install the profiled steel lattice special column 1:

[0052] S2.1. On the floor slab that has been poured and completed, use the embedded wall-piercing screws to position and erect the special column 1; Preferably, the special column assembly includes: the vertical main frame is welded by 80mm×80mm×6mm angle steel, φ48X3.2 steel pipes and 10mm steel plates, and is divided into two standard sections. The first standard section is 3.0 meters, and the second standard section is 1.5 meters. The height of the vertical main frame is 4.5 meters. The φ48X3.2 steel pipe serves as the web of the column, and the 10mm steel plate provides connection points and attachment surfaces for the rigid tie rods to be obliquely tied to the column.

[0053] S2.2. According to the floor height, set wall-piercing screws on the profiled steel lattice special column 1; Preferably, set three wall-piercing screws, two of which are connected to the rigid tie rods, and the other is directly tied to the horizontal wall attachment 2. The special column 1, the rigid tie rod 3, and the horizontal wall attachment 2 form a stable triangular system, providing a stable pulling point for the attached scaffold 7.

[0054] S3. Install the rigid tie rod 3

[0055] S3.1. The rigid tie rod 3 is of profiled steel structure, with uniformly distributed round holes with a diameter of 10-20mm, and is an internal telescopic nested structure system; Preferably, the number of the rigid tie rods 3 is three, and the length of the rigid tie rod 3 can be adjusted by using the end rotating movable head to meet the height requirements of the lattice special column 1. The three rigid tie rods 3, the horizontal wall attachment 2 and the lattice special column 1 form a stable triangular structure system.

[0056] In summary, the present invention has the following beneficial effects:

[0057] 1. The setting of the horizontal wall attachment 2 in the present invention is equivalent to lengthening the floor slab of the existing building structure. The special column 1 is installed on the horizontal wall attachment 2, which can provide a stable and reliable pulling point for the attached scaffold 7 during the lifting process when there are stepped or overhead working conditions on the building structure floor slab surface;

[0058] 2. The setting of the profiled steel lattice special column 1 in the present invention can realize the combined connection in the vertical direction by using the first standard section and the second standard section, and can be flexibly applied to various building floor heights. Compared with the traditional channel steel columns, the angle steel columns have a small floor space occupation and good general performance, and significantly save steel while meeting the force requirements.

[0059] 3. The arrangement of the rigid tie rod 3 of the present invention can utilize the round holes with a diameter of 10 - 20 mm evenly distributed on itself and the end rotating movable head to adjust the length of the rigid tie rod 3, and can be adjusted in a matching manner with the structure of the special-shaped steel lattice column 1 at different heights. The operation is simple, the disassembly and assembly are convenient, and the safety performance is good.

[0060] The technical solutions provided by the embodiments of the present invention have been introduced in detail above. Specific examples are used in this article to elaborate on the principles and implementation manners of the embodiments of the present invention. The descriptions of the above embodiments are only applicable to helping understand the principles of the embodiments of the present invention; at the same time, for those of ordinary skill in the art, according to the embodiments of the present invention, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A construction method of an attached scaffolding used for a panel setback, characterized in that: The following steps are involved: Step S1, pre-embedded through-wall screws (4) and pre-embedded small hangers (5): before pouring concrete on the board surface, use a laser level to locate the holes of the pre-embedded through-wall screws (4) and the positions of the pre-embedded small hangers (5), and use fixing clips to fix the through-wall screws (4) and the pre-embedded small hangers (5) respectively; Step S2, installing the lattice-type special column (1): the lattice-type special column (1) is located in a vertical position, and is set up on the cast floor panel, and the base is fixed by a fixing device, wherein the lattice-type special column (1) is composed of a plurality of first-section standard sections and a plurality of second-section standard sections; according to the floor height, the first-section standard section and the second-section standard section are butt-connected by bolts, so as to meet the attachment requirements of the attached climbing scaffolding at different floor heights; at the same time, the lattice-type special column (1) is supported and fixed by an oblique rigid pull rod (3); Step S3, installing the horizontal wall (2): on the erected lattice-type special column (1), press the lattice-type horizontal wall upward, one end of the horizontal wall (2) is connected to the attached scaffolding (7) by a wall support (6), and the middle part of the horizontal wall (2) is connected to the main structure floor panel (9) by a through-wall screw (4).

2. The method for constructing an attached scaffolding for a panel setback according to claim 1, characterized in that: The through-wall screw (4) is an M32 through-wall screw; the through-wall screw (4) is pre-buried at the root position of the lattice-type special column (1), the middle position of the horizontal wall attachment (2) and the root position of the rigid pull rod.

3. The method for constructing an attached scaffolding for a panel setback according to claim 1, characterized in that: The wall-penetrating screw (4) is mainly composed of high-strength, wear-resistant medium-carbon steel with a carbon content of 0.25-0.28%.

4. The method for constructing an attached scaffolding for a panel setback according to claim 2 is characterized in that: The embedded small hanging seat (5) is composed of an M32 through-wall screw, a screw pad, a base gasket, and a docking interface with a nut notch, and the rigid pull rod (3) is connected to the M32 through-wall screw.

5. The method for constructing an attached scaffolding for a panel setback according to claim 1 is characterized in that: The number of the rigid tie rods (3) is three, and the surface of the rigid tie rods has a circular hole with a diameter of 10-20 mm, forming an internal retractable nested structural system. The rigid tie rods (3) use a rotating movable head at the end to adjust the length of the rod to meet the height requirements of the lattice-type special column (1). The three rigid tie rods (3) form a stable triangular system with the horizontal wall (2) and the lattice-type special column (1).

6. The method for constructing an attached scaffolding for a deck retreat according to claim 1, characterized in that: The number of the horizontal wall attachments (2) is two. The horizontal wall attachments (2) are hollow steel structures, one end of which is a free end and is bolted to a pre-buried M32 through-wall screw, and the other end is connected to an attached scaffold (7) using a wall attachment support (6).

7. The method for constructing an attached scaffolding for a panel setback according to claim 1 is characterized in that: When the setback distance of the plate surface is large, a corrugated steel plate (9) is laid between two main steel beams (8), and the main steel beam (8) is anchored to the lattice-type special column (1) and the horizontal wall (2) by using a clamping channel steel (10) and a pre-buried M32 through-wall screw (4).

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