JPH0453363Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a frame for a superhigh-rise residential complex made of a composite of steel and concrete.

[Conventional technology]

Because housing complexes have strict restrictions regarding noise, vibration, and condensation, their main structure is generally reinforced concrete. In addition, medium-rise apartment complexes with 7 to 13 floors had earthquake resistance issues, so steel-framed reinforced concrete structures were used, with reinforced concrete surrounding the H-beams. Currently, there is a boom in building 40-story buildings with reinforced concrete structures, due to improvements in strength and advances in quality control resulting from recent developments in concrete engineering.

[Problem that the invention attempts to solve]

However, on the other hand, the quality of ready-mix concrete has become a major problem for the durability of buildings, such as a decline in the quality of concrete aggregates and an increase in salt content in concrete due to the heavy use of admixtures associated with pumping. Furthermore, in the case of superhigh-rise housing complexes, a service life of about 65 to 100 years is required, but in the case of reinforced concrete structures, durability is problematic due to the above-mentioned circumstances. Additionally, if the concrete in the main structure begins to deteriorate,
Repair work will be extensive and maintenance costs will be enormous.

The present invention was devised to solve the above-mentioned problems, and aims to improve the durability of the frame and to obtain a frame for a superhigh-rise apartment complex that shortens the construction period.

[Means for solving problems]

The frame for a super high-rise apartment complex according to the present invention has ribbed concrete-filled steel pipe columns, beams made of precast concrete cast on both sides of an H-shaped steel web, and mild steel gussets at both ends. It has a double structure concrete wall with a brace made of tension steel arranged in the center, and a beam with the concrete wall attached between the steel pipe columns is fixed, and the brace of the concrete wall is connected through a gusset. It is fixed to the steel pipe column and beam, respectively, and fireproof coating is applied to the steel pipe column and beam.

[Effect]

The framework for a super high-rise apartment complex will be formed from steel and concrete using a dry construction method that is entirely precast.

〔Example〕

FIGS. 1a and 1b are a front view and a plan view showing an embodiment of the present invention. In the figure, the left side shows the steel frame of a super high-rise apartment complex, and the right side shows its finishing status. Column A is a ribbed concrete-filled steel pipe column, and filled concrete 1 is protected by steel pipe 2. Therefore, deterioration of the pillar A is prevented and the strength is also increased due to the hoop effect. In this case, if high-tensile steel is used for the steel pipe 2, the strength of the concrete will further increase. Note that 3 is a steel brace, 4 is a concrete wall, 5 is a sealing material, and 6 is a fireproof coating.

FIG. 2 is a perspective view showing an embodiment of the beam according to the present invention. Beam B has a hybrid beam structure;
Precast concrete 9 is placed on both sides of the web 7a of the H-shaped steel 7 that constitutes the structure. This precast concrete 9 has connector reinforcement 1
It is integrated with the H-shaped steel 7 via 0. In addition,
The lighter the precast concrete 9 is, the lighter the building weight will be, and the fire resistance will be improved.

FIG. 3 is a longitudinal sectional view showing an embodiment of the arrangement around the beam B according to the present invention. concrete wall 4
The concrete wall 4 is constructed of a double wall with steel braces 3 at its center, and its rigidity can be adjusted freely, so even if a large earthquake were to occur and it collapsed, the concrete wall 4 could be easily replaced. The steel brace 3 is made of high-tensile steel, and the gussets provided at both ends are made of mild steel to absorb energy during an earthquake, and only the mild steel gussets need to be replaced. This concrete wall 4 is attached to the precast concrete 9 of the beam B with bolts, and sealing with the columns A and the floor plate C is performed separately. Note that the floor plate C is composed of a precast floor 11, and has a concrete sanderch plate structure made of steel plates or an unbonded PC floor. According to such floorboards, cracks are prevented from occurring,
The livability performance is also maintained well.

In addition, in this example, the fireproof coating is made of a highly adhesive blast furnace slag-based spray material that also serves as rust prevention for the pillar A, but a fireproof plate vermiculite etc. is used on top of the highly durable fluorine-based paint. It may also be a rigid board attached.

In addition, as shown in FIG.
The upper flange 8a of the shaped steel 7 is attached to the precast floor 1
1. In addition, the width of the lower flange 8b of the H-shaped steel 7 is made smaller than the upper flange 8a, both sides of the lower flange 8b are covered with concrete, and the lower side is treated with fire-resistant paint 12 (or rigid board) constituting a fire-resistant coating. It has been done. In addition, 13 is a base material, 14 is backfill concrete, and 15 is a finishing material.

The procedure for constructing the super high-rise apartment complex of the present invention constructed as described above will be explained as follows. first,
Steel pipe 2 filled with concrete 1, i.e. column A
Next, the beam B with the concrete wall 4 is assembled into the ground, and this is suspended as shown in Fig. 4. Here, the web 7a of the beam B and the column A are tightened with gusset bolts, and the gusset of the steel brace 3 of the concrete wall 4 is tightened with the gusset bolt provided on the column A. Next, the upper gusset of the lower beam and the brace 3 of the concrete wall 4 are tightened with gusset bolts, and the flanges 8a and 8b of the beam B are welded on site from the direction shown in FIG. 4A.

Next, the end of the beam B is filled with concrete, the gusset part of the steel brace 3 of the concrete wall 4 is filled with concrete, and the precast floor 1 shown in FIG.
1 and pour backfill concrete 14. Next, a fireproof coating is applied to the lower parts of the columns A and beams B, and the sealing material 5 is injected and the finishing material 15 is applied.

FIGS. 5a and 5b are a front view and a plan view showing an example of a system for replacing the concrete wall 4 when the wall collapses due to a major earthquake or the like. 30 is a mild steel brace that absorbs energy during a major earthquake, and 31 is a steel brace made of high-tensile steel.

FIG. 6 is an assembly diagram showing an example of the frame for a super high-rise apartment complex constructed as described above, and 100 indicates the inside of the house.

[Effect of idea]

As is clear from the above explanation, the present invention uses ribbed concrete-filled steel pipes for the columns, which prevents deterioration and has high strength.
It is constructed by placing precast concrete on both sides of a shaped steel web, so it has great strength.

Furthermore, concrete walls have a simple structure, are lightweight, have great earthquake resistance, are inexpensive, and are easy to replace because they only require replacing the walls made of mild steel.

This simplifies construction, reduces costs and shortens construction time, making it possible to realize ultrahigh-rise apartment buildings with excellent durability.

[Brief explanation of the drawing]

Figures 1a and b are a front view and a plan view showing an embodiment of the present invention, Figure 2 is a perspective view showing an embodiment of the invention, and Figure 3 is a longitudinal sectional view showing an embodiment of the invention. Figure 4 is an explanatory view of the operation of the embodiment of the wall-mounted beam in a suspended state according to the present invention, Figures 5a and b are front views and plan views showing the operation of the embodiment of the present invention, and Figure 6 is the operation of the embodiment of the invention. FIG. 2 is an assembly diagram showing an example of a frame for a super high-rise apartment complex according to the present invention. A...Column, B...Beam, C...Floor plate, 3...Steel brace, 4...Concrete wall, 7...H-shaped steel,
1,9...Concrete.

Claims (1)

[Scope of Claim for Utility Model Registration] A ribbed concrete-filled steel pipe column, a beam made by pouring precast concrete on both sides of an H-shaped steel web, and mild steel gussets at both ends,
It has a double structure concrete wall with a brace made of high tensile steel arranged in the center, and a beam with a concrete wall attached between the steel pipe columns is fixed and the brace of the concrete wall is connected through a gusset. A frame for a super high-rise apartment complex, characterized in that the frame is fixed to the steel pipe columns and beams, respectively, and the steel pipe columns and beams are coated with fireproof coating.