JPH0925667A - Building frame structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure the rigidity of a building frame structure and reduce the construction period in a low cost, by installing the outer peripheral frame constituted of reinforced concrete main frames assembled at every 2 or 3 layers and subframes like a steel frame structure sharing the stationary loading of respective layers. SOLUTION: Core walls in a center core part are constructed prior to the general parts ahead of about 3-6 floors by use of sliding forms as a form. Marking is carried out at first. For the construction of main frame structures 1, column-reinforcements using prefabricated reinforcements are erected and column forms and beam forms are erected by use of system forms. Then beam- reinforcements using prefabricated reinforcements are erected in the beam forms. Steel frames in the subframe part 2 are erected and decks and mesh rods are laid down. Concrete is placed in the column forms and beam forms or on the decks to complete one cycle of construction process. Large openings extending to 2-3 layers are secured in the main frame structure 1 of the outer peripheral frame. And steel columns or the like are arranged in this structure 1 to support eaves.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a frame structure of a building.

[0002]

2. Description of the Related Art The structure of a building is determined by the building structure contents such as steel frame (S structure), reinforced concrete structure (RC structure), steel frame reinforced concrete structure (SRC structure). There are also composite frames such as combinations.

As such a composite frame structure, the lower floors of the building are constructed by reinforced concrete construction, the upper floors are constructed by steel frame construction, etc., where the lower part and the upper part of the entire building are divided, or the columns are reinforced concrete construction. There are things such as steel-framed reinforced concrete structures, which are divided by members such as beams.

[0004]

The object of the present invention is to pay attention to such a composite frame, firstly to reduce the cost and to maintain high rigidity, and secondly to have a simple and lightweight joint. The purpose of this is to provide a building frame that can be converted into a new building and speed up construction.

[0005]

In order to achieve the above-mentioned object, the present invention firstly comprises an outer frame consisting of a main frame constructed every two or three layers and a sub-frame which bears the constant load of each layer. The main frame is a reinforced concrete structure,
The sub-frame should be steel structure or small precast reinforced concrete structure, secondly, the floor should be deck slab or precast concrete lightweight floor,
Thirdly, to provide a center core and combine it with the outer frame to make a double tube system. Fourthly, to install a vibration control device for reducing horizontal force in the center core. Is.

According to the first aspect of the present invention, the main frame structure is a reinforced concrete structure, whereby the cost can be reduced and high rigidity can be maintained, and the subframe is a steel frame structure or a small precast reinforced concrete structure, Moreover, since the frame does not bear horizontal force, the joint can be made simple and lightweight, and the construction speed can be increased.

According to the second aspect of the present invention, the floor is a lightweight deck slab or precast concrete floor, and by combining this with a steel beam, it is possible to reduce the weight and reduce the seismic force.

According to the present invention as set forth in claim 3, the double tube system provides a seismic and wind resistant structure. According to the present invention as set forth in claim 4, the horizontal force is further reduced in the center core 4. Seismic and wind resistance effects can be further improved by installing a seismic control device.

[0009]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is an explanatory view showing one embodiment of a building frame of the present invention, and FIG. 2 is a perspective view of an essential part of the same as above. In the figure, 1 is a main frame composed of a pillar 1a and a beam 1b.

The main frame 1 is constructed by every two or three layers (one layer is one floor) and has a reinforced concrete structure made of cast-in-place concrete or large precast concrete.

On the other hand, 2 is a sub-frame composed of columns 2a and beams 2b assembled inside the main frame 1, which bears the constant load of each layer. This subframe 2 is a steel frame structure or a small precast reinforced concrete structure.

In the building frame of the present invention, the outer frame is formed by combining the main frame 1 and the sub frame 2, and the floor 3 is a deck slab or a lightweight floor of precast concrete. Although not shown, the floor 3 is supported by a steel beam or the like. In the figure, 5 is a corridor formed in the lower part of the building.

As a building, a center core 4 (one in the illustrated example) may be provided as shown in FIGS. 3 and 4, and a double tube type may be combined with the outer peripheral frame.

By adopting the double tube system as described above, a seismic and wind resistant structure is provided, and if necessary, a vibration control device for reducing horizontal force may be installed in the center core 4.
As such a vibration control device, a super durable oil damper that integrates the frame of the building absorbs the vibration of earthquakes and strong winds, and a honeycomb type damper is installed on the walls and beams to absorb the vibration energy. The thing etc. are suitable.

Next, the construction method will be described. 5 to 10
Is an explanatory view of each process. As shown in FIG.
The core wall 6 of the part is constructed to precede the general part 7 by about 3 to 6 floors. For the construction of the core wall 6, a sliding form or a jump form is used for the formwork. It is also possible to assemble every second floor or every third floor.

Marking is carried out and the main frame 1 as shown in FIG.
However, the pillar rebar 8 is erected by prefabricated rebars, the column form 9a and the beam form 9b are erected by the system form as shown in FIG. 7, and the prefabricated rebars as shown in FIG. The beam rebar 10 is built in the beam form 9b.

Next, as shown in FIG. 9, the steel frame (PC) of the subframe 2 portion is built. The deck is laid and the mesh muscles are laid.

As shown in FIG. 10, a pillar form 9a and a beam form 9b.
Concrete is placed inside and on the deck to complete one cycle of construction.

By the way, at the stage of FIG.
3 days to lay the deck, 3 days to lay the mesh muscles
We will look at the 6th of the day, one day each in the stages of FIGS. 6 to 8, and one day / floor in the concrete placing shown in FIG.
3 = 3 days, for a total of 12 days / 3rd floor = 4 days / floor.

By the way, as for the column 1a constituting the main frame 1, as shown in FIGS. 11 and 12, it is used as an SRC column by combining the steel frame 11 and the reinforcing bar 12, and as shown in FIGS. 13 and 14. A half precast column in which the precast member 13 and the reinforcing bar 12 are combined may be used.

In any of the above cases, the connection with the steel beam 2b constituting the subframe 2 is taken into consideration, and the projection with the gusset plate 14 facilitates the connection with the beam 2b. .

Further, when the steel form 15 is used for constructing the pillar 2a, a bracket 16 can be attached to the steel form 15 to temporarily support the beam 2b. Further, in FIG. 16, 17 is an embedded plate for attaching the gusset plate 14, and has an anchor 17a.

FIG. 17 and FIG. 18 show an example of a building having the frame of the present invention constructed in this way. In the main frame 1 which is the outer frame, a large opening over two or three layers can be secured, It is also possible to arrange a steel column 18 and a steel beam 19 which are not building structural members in this frame, and to support the attachment of the eaves 20 with these.

[0024]

As described above, the building frame of the present invention is
The main frame is a reinforced concrete structure, which reduces costs and maintains high rigidity.The subframe has a steel frame structure or a small precast reinforced concrete structure. In addition, it is possible to reduce the weight and speed up the construction.

The floor may be a deck slab or a precast concrete lightweight floor. By combining this with a steel beam, the weight can be reduced and the seismic force can be reduced.

[Brief description of drawings]

FIG. 1 is an explanatory view showing an embodiment of a building frame of the present invention.

FIG. 2 is a perspective view of an essential part showing one embodiment of the building frame of the present invention.

FIG. 3 is a perspective view of an example in which a double tube system with a center core is adopted.

FIG. 4 is a plan view of an example in which a double tube system with a center core is adopted.

FIG. 5 is an explanatory view showing a first step of construction of the building frame of the present invention.

FIG. 6 is an explanatory view showing a second step of construction of the building frame of the present invention.

FIG. 7 is an explanatory view showing a third step of construction of the building frame of the present invention.

FIG. 8 is an explanatory view showing a fourth step of construction of the building frame of the present invention.

FIG. 9 is an explanatory view showing a fifth step of construction of the building frame of the present invention.

FIG. 10 is an explanatory view showing a sixth step of construction of the building frame of the present invention.

FIG. 11 is a side view showing an example of a pillar of the main frame.

FIG. 12 is a cross-sectional plan view showing an example of a pillar of the main frame.

FIG. 13 is a side view showing another example of the pillar of the main frame.

FIG. 14 is a cross-sectional plan view showing another example of columns of the main frame.

FIG. 15 is a front view showing a temporary support method using a pillar frame of the main frame.

FIG. 16 is a vertical cross-sectional side view of essential parts showing a temporary support method using a pillar frame of a main frame.

FIG. 17 is a front view of the main part showing an example of a building having the frame of the present invention.

FIG. 18 is an internal perspective view of a main part showing an example of a building having the frame of the present invention.

[Explanation of symbols]

1 ... Main frame 1a ... Pillar 1b ... Beam 2 ... Subframe 2a ... Pillar 2b ... Beam 3 ... Floor 4 ... Center core 5 ... Corridor 6 ... Core wall 7 ... General part 8 ... Pillar rebar 9a ... Pillar form 9b ... Beam formwork 10… Beam rebar 11… Steel frame 12… Reinforcement bar 13… Precast member 14… Gusset plate 15… Steel formwork 16… Bracket 17… Embedded plate 17a… Anchor 18… Steel column 19… Steel beam 20… Eaves

Front page continuation (72) Inventor Kunihide Oshiomi 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Within Kashima Construction Co., Ltd. (72) Inventor Yukinari Miyamae 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. (72) Inventor Atsushi Wada 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd.

Claims (4)

[Claims] 1. The outer frame comprises a main frame constructed by two or three layers and a subframe that bears the constant load of each layer, the main frame has a reinforced concrete structure, and the subframe has a steel frame structure or a small precast structure. A building frame characterized by a reinforced concrete structure. 2. The building frame according to claim 1, wherein the floor is a lightweight deck slab or precast concrete floor. 3. The building frame according to claim 1 or 2, wherein a center core is provided and a double tube system is combined with the outer peripheral frame. 4. The building frame according to claim 3, wherein a vibration control device for reducing horizontal force is installed in the center core.