JP7698683B2 - Steel frame building constructed using scaffolding and scaffolding erection method for steel frame building - Google Patents

Description

The present invention relates to a steel frame building constructed using scaffolding and a scaffolding erection method for a steel frame building, and in particular to a steel frame building constructed using scaffolding and a scaffolding erection method for a steel frame building, which makes it possible to assemble the exterior walls on the scaffolding without the need for rope work at height by placing horizontal aluminum profiles between the stories of the outer shell of the steel frame building and fixing the scaffolding to the outside of the horizontal aluminum profiles in two stages.

Early residential construction in Taiwan was dominated by brick, but with the introduction of reinforced concrete technology and reduced costs, residential construction began to be dominated by reinforced concrete.
As Taiwan's economy developed and population density increased, land costs soared, leading to a rise in demand for steel-framed skyscrapers, and the number of steel-framed skyscrapers increased not only for commercial buildings but also for residential buildings. According to statistics, residential buildings account for the majority of the construction industry in Taiwan, at over 90%.

Generally speaking, Taiwan's architecture includes three types of structures: RC (reinforced concrete), SS (steel frame) and SRC (steel reinforced concrete). SS (steel frame) or SRC (steel reinforced concrete) structures have a longer lifespan than traditional RC (steel reinforced concrete) structures, and their materials are recyclable and environmentally friendly. However, the construction costs of SS (steel frame) or SRC (steel reinforced concrete) structures are high, so residential buildings are still mainly made of RC (steel reinforced concrete) structures.

In reinforced concrete (RC) buildings, scaffolding can be erected so that construction workers can use the scaffolding to work on the upper floors and complete the building structure.
The RC beams of the building structure have embedded rebars (e.g. D10 bamboo joint rebars) with the distance between adjacent embedded rebars being between approximately 160cm and 180cm (adjusted according to the scaffolding erection drawings), and the scaffolding can be erected by wrapping the embedded rebars around the scaffolding and fixing it to the outside of the building structure.
When scaffolding is erected using embedded rebars, positional errors are tolerated and do not affect subsequent construction, allowing the erection of the scaffolding to be completed quickly.

Many steel-frame buildings, such as SS (steel frame) or SRC (steel reinforced concrete) structures, use curtain walls for the exterior walls. Curtain walls have the advantages of being lightweight, being in the form of modular units, and being quick to install during construction. The installation method is to suspend the curtain wall from the outside of the floor slab using connecting members.

However, curtain walls cannot be assembled using scaffolding because the embedded rebars used to secure scaffolding in building structures get in the way of curtain wall assembly.
Currently, curtain walls are assembled using a rope-work at height method, but the costs of the lifting equipment and specialized workers required for rope-work at height are high, which further increases the cost of steel-framed buildings and is detrimental to the spread of steel-framed buildings.

The applicant of this application has previously filed Taiwan Patent Application No. 111147640 for a "Steel Frame Building Shell Structure" that reduces the construction costs of steel frame residential buildings.

The problem that this invention aims to solve is to provide a steel frame building constructed using scaffolding and a method of erecting scaffolding for a steel frame building, which makes it easier to erect scaffolding for steel frame buildings and allows exterior walls (such as curtain walls) to be assembled on the scaffolding.

The scaffolding erection method for a steel frame building of the present invention includes a steel frame building body, a floor slab, and a building exterior wall, the steel frame building body includes H-shaped steel and a deck plate assembled on the H-shaped steel, the floor slab includes an RC slab laid on the deck plate, the building exterior wall includes embedded members, horizontal aluminum profiles, and exterior wall panels, and includes the steps of assembling the deck plate onto the H-shaped steel and constructing the steel frame building body, laying an RC slab on the deck plate to form the floor slab, laying a steel reinforcement structure and embedded reinforcing bars in the RC slab, extending the embedded reinforcing bars outside the RC slab and wrapping them around the scaffolding, and installing the scaffolding. The first stage of fixing includes the steps of constructing the floor slab, embedding embedded members used to screw-fix the wall connecting rods in the RC slab at intervals and installing horizontal aluminum profiles on the outside of the RC slab, inserting one end of the wall connecting rod into the horizontal aluminum profile and screwing it to the embedded member, screwing the other end of the wall connecting rod to the scaffolding, removing the embedded reinforcing bar from the scaffolding to fix the scaffolding in the second stage, attaching the exterior wall panels from the outside between the floor slabs, separating the adjacent exterior wall panels with the horizontal aluminum profiles, and constructing the exterior wall of the building, and removing the wall connecting rods and removing the scaffolding when the construction of the exterior wall of the building is completed.

Furthermore, by using D10 bamboo joint rebar as the embedded rebar and wrapping the D10 bamboo joint rebar around the scaffolding at least three and a half times, the fixing strength stipulated by regulations is met.

Furthermore, the embedded rebar is removed from the scaffolding and the portion of the embedded rebar exposed from the RC slab is cut off.

Furthermore, the embedded member is an expansion nut, and one end of the wall connecting rod is screwed and fixed to the expansion nut with a screw.

Furthermore, after removing the wall connecting rod, a nut is screwed onto the embedded member, or it is filled with silicone and then smoothed and sealed with paint.

According to the present invention, based on the above-mentioned technical features, the following effects can be achieved.
1. The two-stage fixing allows the scaffolding to be fixed to the outside of the horizontal aluminum profiles, allowing the exterior walls to be assembled on the scaffolding, eliminating the need for ropes for high-altitude work. This reduces the costs of steel-framed buildings, is beneficial for the promotion of steel-framed buildings, extends the service life of buildings, and meets environmental protection requirements.
2. In the first stage of fixing the scaffolding, the embedded steel bars are wrapped and fixed, which allows the scaffolding to be erected quickly. In the second stage of fixing the scaffolding, wall connecting rods are used to replace the embedded steel bars, allowing the exterior wall to be assembled on the scaffolding and the position of the wall connecting rods to be accurately aligned, making the scaffolding more stable and improving safety.

FIG. 2 is a perspective view of a steel frame building shell after the first stage of scaffolding has been fixed in an embodiment of the present invention. FIG. 2 is a cross-sectional view of a steel frame building shell after the first stage of scaffolding fixing has been carried out in an embodiment of the present invention. FIG. 2 is a perspective view of a steel frame building shell after the second stage of scaffolding has been fixed in an embodiment of the present invention. FIG. 2 is a cross-sectional view of a steel frame building shell after the second stage of scaffolding fixing has been carried out in an embodiment of the present invention. FIG. 2 is a perspective view of a steel frame building shell with the wall tie rods removed and the embedded members sealed with nuts in an embodiment of the present invention. FIG. 2 is a plan view of a steel frame building shell with the wall tie rods removed and the embedded members sealed with nuts in an embodiment of the present invention.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.
It goes without saying that the present invention is not limited to the examples.
Moreover, since a steel frame building is huge, the drawings are all partial in order to clearly show the features of the present invention.

In this embodiment, the steel frame building includes a steel frame building body A, a floor slab B, and a building exterior wall C.

As shown in Figs. 1 and 2, first, the steel frame building body A is constructed.
The steel frame building body A mainly includes a steel beam made of H-shaped steel 1 and a deck plate 2 , and the deck plate 2 is assembled onto the H-shaped steel 1 .

After the assembly of the steel frame building body A is completed, the floor slab B is constructed.
An RC slab 3 is laid on the deck plate 2 to form a floor slab B.
A reinforcing bar structure 31 and embedded reinforcing bars are laid in the RC slab 3, and in this embodiment, D10 bamboo joint reinforcing bars 32 are used as embedded reinforcing bars. The D10 bamboo joint reinforcing bars 32 are extended outside the RC slab 3, and are wrapped around the scaffolding 4 to form the first stage of fixing the scaffolding 4. To ensure stable fixing of the scaffolding 4 and to meet the fixing strength stipulated by regulations, the D10 bamboo joint reinforcing bars 32 are wrapped around the scaffolding 4 at least three and a half times.
When using other reinforcing bars, such as D13 bamboo joint reinforcing bars, for the embedded reinforcing bars, wrap them around the scaffolding 4 in accordance with the provisions of the relevant laws and regulations.

As shown in Figures 3 and 4, after the construction of the floor slab B is completed and the scaffolding 4 is erected to perform the first stage of fixing, the construction of the building exterior wall C can be carried out.
In this embodiment, the building exterior wall C has a two-layer structure and includes an embedded member 7, a horizontal aluminum profile 8, an exterior wall panel 101, and an interior wall panel 102.

To construct the building exterior wall C, first pour and mold the RC water-stopping edge 5 onto the RC slab 3, then embed multiple embedded members 7 used to secure the wall connecting rods 6 into the RC slab 3 from the outer surface to the inside at intervals, and install horizontal aluminum profiles 8 on the outside of the RC slab 3. Then, one end of the wall connecting rod 6 is inserted through the horizontal aluminum profile 8 and screwed into the embedded member 7.

In this embodiment, an expansion nut is used as the embedded member 7, and the wall connecting rod 6 is screwed and fixed to the embedded member 7 by a screw. According to a test, this can withstand a load of 2 tons.
Furthermore, after the other end of the wall connecting rod 6 is screwed and fixed to the scaffolding 4, the D10 bamboo joint reinforcing bar 32 is removed from the scaffolding 4 to complete the second stage of fixing of the scaffolding 4.
After removing the D10 bamboo joint rebar 32 from the scaffolding 4, the portion of the D10 bamboo joint rebar 32 exposed from the RC slab 3 can be cut off.

Next, one of the two C-shaped steels 9 is installed on the RC waterstop edge 5 with its opening facing upward, and the other is installed under the deck plate 2 with its opening facing downward, and then an exterior wall panel 101 and an interior wall panel 102 are affixed to the RC waterstop edge 5 and the opposing sides of the two C-shaped steels 9.
A hollow space S is formed between the exterior wall panel 101 and the interior wall panel 102, which gives the building exterior wall C a two-layer structure and allows the building exterior wall C to be installed directly on the floor slab B. The floor slab B completely separates the spaces between the upper and lower floors and serves as an excellent water-proof/sound-proof/thermal insulation layer between the upper and lower floors.
The exterior wall panels 101 are installed from the outside between the floor slabs B of the upper and lower floors, and adjacent exterior wall panels 101 are separated by horizontal aluminum profiles 8. Elastic cement can be further filled into the assembled gaps between the exterior wall panels 101 to further improve the waterproofing effect between the indoor and outdoor sides.

In this embodiment, the sound-proofing material 20 is installed between the two C-shaped steels 9, filling the hollow space S, and extending along the height direction of the building exterior wall C. For example, by filling the hollow space S with rock wool and filling the hollow space S in the building exterior wall C having a two-layer structure with the sound-proofing material 20, the sound-proofing/heat-insulating effect between the indoor side and the outdoor side can be further improved.
Furthermore, by filling the gap between the horizontal aluminum profile 8 and the two exterior wall panels 101 with silicone 30, the drawback of conventional one-piece curtain walls that they are prone to damage due to resonance when vibrated under force is suppressed, and the horizontal aluminum profile 8 separates the exterior wall panels 101, reducing the risk of the exterior wall panels 101 being damaged under force. In addition, since the joints between the floors of the building exterior wall C are physically filled with the horizontal aluminum profile 8, the amount of silicone 30 can be reduced, resulting in excellent maintainability and cost savings.

As shown in Figures 5 and 6, when the construction of the building exterior wall C is completed, the wall connecting rods 6 are removed and the scaffolding 4 is removed (see Figures 3 and 4 for the wall connecting rods 6 and the scaffolding 4). After removing the wall connecting rods 6, the nuts 40 are screwed onto the embedded members 7, or the embedded members 7 are filled with silicone and then flattened and sealed with paint.
Since the exterior wall panel 101 is flat and does not require bricks to be attached, a waterproof layer is finally sprayed onto the entire exterior wall panel 101, and then a natural paint is applied to complete the construction of the building exterior wall C.

The specific steps for erecting the scaffolding in this embodiment are described below.
Among them, the methods that are the same as or similar to those used in the construction of conventional steel frame buildings are known to engineers in this field, so they are not shown in the figures, and detailed explanations of the construction are omitted.
(1) Assemble the box columns and H-shaped steel 1, which are the structural materials for each floor; (2) Lay the deck plates 2 and deck boards for each floor; (3) Mark out the piping; (4) Lay the reinforcing bar structure 31 (including welded wire mesh) for each floor, and embed the D10 bamboo joint reinforcing bars 32 in advance; (5) Pour concrete for each floor to form the RC slab 3; (6) Assemble the scaffolding 4, and wrap the D10 bamboo joint reinforcing bars 32 around the scaffolding 4 at least three and a half times to secure the scaffolding 4 in the first stage; (7) Construct the RC water-stop edge 4 (plant the reinforcing bars and fill with grout); (8) Lay the steel Marking out and installing Z-shaped steel beams, which are common bar materials for frame-structured buildings; (9) Spraying fireproof coating material onto the box columns and H-shaped steel beams 1 on each floor; (10) Marking out the fixing positions of the embedded members 7 of the wall connecting rods 6; (11) Installing the embedded members 7 of the wall connecting rods 6 into the RC slab 3; (12) Installing the horizontal aluminum profiles 8; (13) Installing the wall connecting rods 6 into the scaffolding 4 and fixing them with screws, and removing the D10 bamboo joint reinforcing bars 32 from the scaffolding 4 to perform the second stage of fixing of the scaffolding 4; (14) Marking out, spacing out, and installing 125-type C-shaped steel beams, including the C-shaped steel beams 9 in the building exterior wall C, in a vertical position. (15) Mark out the 125-type C-shaped steel on the facade of the opening, door or window (combine the cross bars and fasteners); (16) Fix the exterior wall panel 101; (17) Fill and seal the gaps in the assembly of the exterior wall panel 101 with elastic cement (fill and seal the gaps in the assembly of the exterior wall panel 101 with mortar); (18) Close the gaps of the external panel materials with a crack-resistant net; (19) Fill long rock wool into the building exterior wall C; (20) Fix the interior wall panel 102; (21) Fix the aluminum window mounting members; (22) Attach the aluminum window frame and door frame. (23) Caulk the doors and windows; (24) Install door and window flashings; (25) Fireproof seal all gaps in the assembly between the steel frame building body A, the floor slab B, and the building exterior wall C; (26) Spray a waterproof layer on the entire exterior wall panel 101; (27) Fill the aluminum window and door frames with silicone; (28) Apply natural paint to the surface of the exterior wall panel; (29) Remove the scaffolding 4 for each floor, and remove the wall connecting rods 6 one by one, tightening the nuts 40 or filling them with silicone, then smoothing and sealing them with paint; (30) Construction of the exterior wall on this floor is completed.

This two-stage fixing method allows the scaffolding to be fixed onto the horizontal aluminum sections and the curtain wall to be assembled on the scaffolding, eliminating the need for rope work at height. This reduces the cost of steel frame buildings, is beneficial for the widespread use of steel frame buildings, extends the lifespan of buildings, and meets environmental protection requirements.

The above describes the best embodiment of the present invention, and does not limit the scope of the invention. All simple changes and modifications that do not depart from the scope of the claims are included within the scope of the invention.

A Steel frame building body B Floor slab C Building exterior wall 1 H-shaped steel 2 Deck plate 3 RC slab 31 Steel structure 32 D10 bamboo joint steel bar 4 Scaffolding 5 RC water stop edge 6 Wall connecting rod 7 Embedded member 8 Horizontal aluminum profile 9 C-shaped steel 101 Exterior wall panel 102 Interior wall panel 20 Sound insulation material 30 Silicone 40 Nut S Hollow space

Claims (5)

A scaffolding installation method for a steel frame building, comprising the steps of:
The steel frame building includes a steel frame building body, a floor slab, and a building exterior wall,
The steel frame building body includes an H-shaped steel and a deck plate assembled on the H-shaped steel,
The floor slab includes an RC slab laid on the deck plate,
The building exterior wall includes an embedded member, a horizontal aluminum profile, and an exterior wall board,
a step of assembling the deck plate onto the H-shaped steel and constructing the steel frame building body;
A process of laying an RC slab on the deck plate to form the floor slab, laying a steel bar structure and embedded rebars in the RC slab, extending the embedded rebars outside the RC slab and winding them around the scaffolding, and constructing the floor slab as a first stage fixation of the scaffolding;
embedding members used for screwing and fixing the wall connecting rods are embedded from the outside to the inside of the RC slab at intervals, and a horizontal aluminum profile is installed on the outside of the RC slab, one end of the wall connecting rod is inserted into the horizontal aluminum profile and fixed to the embedding member, and the other end of the wall connecting rod is fixed to the scaffolding, and then the embedded reinforcing bar is removed from the scaffolding to perform a second stage fixation of the scaffolding;
a step of attaching the exterior wall panels between the floor slabs from the outside, separating the adjacent exterior wall panels by the horizontal aluminum profiles, and constructing the building exterior wall;
Upon completion of the construction of the exterior wall of the building, removing the wall connecting rod and removing the scaffolding;
A scaffolding installation method for a steel frame building, comprising: The scaffolding erection method for a steel frame building as described in claim 1, characterized in that D10 bamboo joint rebar is used as the embedded rebar and the D10 bamboo joint rebar is wrapped around the scaffolding at least three and a half turns, thereby satisfying the fixing strength specified by regulations. 2. The scaffolding erection method for a steel frame building according to claim 1, characterized in that after removing the embedded reinforcing bars from the scaffolding, the portion of the embedded reinforcing bars exposed from the RC slab is cut off. 2. The scaffolding erection method for a steel frame building according to claim 1, wherein the embedded member is an expansion nut, and one end of the wall connecting rod is screwed and fixed to the expansion nut with a screw. 2. The scaffolding erection method for a steel frame building according to claim 1, characterized in that, after removing the wall connecting rod, the embedded member is screwed with a nut or filled with silicone and then flattened and sealed with paint.

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