JP2002309797A - Method of constructing frame for multistory precast and pre-stressed concrete building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable the construction of a multistory building with a PCaPC compression joint method impossible with a current PCaPC compression joint method because a means for earthquake response analyzing is not established. SOLUTION: PCa members having high strength are compression-joined to each other for connection or the PCa member having high strength and a PCaPC member are compression-joined to each other through a PC steel material for connection to assemble a frame, and a base isolation device and/or a vibration control deice for concentrically consuming the hysteresis energy are (is) assembled to construct the frame for the multistory building.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structural type using a high-strength precast concrete (PCa) member or a precast prestressed concrete (PCaPC) member together with a seismic isolation device or a vibration damping device or a seismic isolation device and a vibration damping device. And a method of building a frame of a high-rise PCaPC building. In the present invention, a “high-rise” building refers to a building having a height of more than 31 m and a height of 60 m.
Includes skyscrapers that exceed The “PCa member” refers to a precast concrete column or beam or a column and a beam, and the “PCaPC member” refers to a precast prestressed concrete beam. Furthermore, "PCa
The “PC crimping method” refers to a method of forming a frame by bonding a PCa member or a PCaPC member by a PC steel material.

[0002]

2. Description of the Related Art A conventional high-rise building has a reinforced concrete (RC) structure, a steel frame (S) structure, a steel reinforced concrete (SRC) structure, a concrete-filled steel pipe (CFT) structure, or a composite structure combining them. On the other hand, the conventional prestressed concrete (PC) structure is mainly applied to a low-rise building having a beam having a relatively large span or a beam supporting a large load, since it has a feature that a high strength is easily imparted. . In addition, PC which is a category of PC structure
Since the structure by the aPC crimping method has a feature that consumption of hysteretic energy is small and response deformation due to seismic motion is large, in Japan where seismic design is dominant, it is not suitable for high-rise buildings and has not been applied yet. The conventional RC structure has less strength in the same cross section than the structure using the PCaPC crimping method, and it is difficult to construct a large span frame. In a high-rise apartment building, the number of pillars increases, The degree of freedom is hindered. Further, the restoring force characteristic of the conventional RC member exhibits a spindle-type behavior and consumes sufficient hysteresis energy, but damage and residual deformation due to seismic motion increase, and it is difficult to repair.

[0003]

It is generally known that the structure by the PCaPC crimping method has a tendency to consume less hysteresis energy and to have a large response deformation due to seismic motion. In addition, there has been a problem that the construction of a high-rise building is impossible because a method of seismic response analysis including the hysteresis characteristic model has not been established.

[0004] The inventors of the present invention attempted to increase the thickness of the PCa by the PCaPC crimping method, so that the PCa was verified by experiments.
Using a hysteresis characteristic model of PC members and knowledge obtained from a shaking table test, a seismic isolation device or a vibration damping device or a seismic isolation device for intensively consuming seismic energy in a frame in which PCaPC members are crimped and joined with PC steel materials. PCa, which was impossible in the past, was designed by combining vibration damping devices.
We have developed a technology that enables high-rise buildings using the PC crimping method. An object of the present invention is to provide such a novel technique.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and its technical means includes a high-strength precast concrete (PCa) member and a high-strength precast concrete member (PCa). Or precast prestressed concrete (PCaPC)
A frame of a high-rise precast prestressed concrete (PCaPC) building characterized by incorporating a seismic isolation device and / or a vibration damping device for intensively consuming hysteretic energy by assembling a frame by pressure bonding a member and a PC steel material. It is a construction method. The building constructed by the method of the present invention is a frame of a high-rise PCaPC building provided with a seismic isolation device and / or a vibration damping device, in which columns and beams are made of high-strength PCa members or PCaPC members. The seismic isolation device mainly reduces the vibration input of an earthquake, and a laminated rubber isolator having a structure in which rubber and a steel plate are laminated is generally known. In addition, a damper or the like is used together as an energy absorbing function. There are a type in which a damper function is incorporated in the laminated rubber isolator and a type in which the laminated rubber isolator and the damper are separately installed. Vibration suppression devices are mainly used to reduce the shaking of buildings due to earthquakes. As the vibration suppression devices, viscoelastic dampers and damping walls using hysteretic dampers, braces and brace sticks are generally known. I have.

[0006] When the frame of the high-rise PCaPC building is provided with a seismic isolation device, the seismic isolation device is incorporated, and a high-strength PCa member or P-member manufactured at a well-managed factory is installed.
This is achieved by bringing the CaPC member to the construction site, crimping and joining with a PC steel material to assemble the skeleton, and further incorporating a vibration damping device into the skeleton when a vibration damping device is provided.

[0007]

Embodiments of the present invention will be described below. PC structure uses high-strength concrete,
By introducing pre-stress, members can be made smaller and lighter, which makes them more suitable for high-rise buildings. In addition, the load per column is increased by using long beams to increase the column spacing. Because it can be made heavy, it can be easily applied to seismic isolation buildings. However, conventionally, no design method has been developed for high-rise buildings, and it has been used exclusively for low-rise buildings.

[0008] The structure formed by the PC crimping method has a feature that it is highly resilient and has very little residual deformation during an earthquake, and almost returns to its original position after deformation, but has a large response deformation and a small energy consumption. ing.

In order to cover these points, the present invention incorporates a seismic isolation device or a vibration damping device or a seismic isolation device and a vibration damping device to reduce the input energy from the foundation due to the earthquake, and further to input the energy to the frame. For the first time, it is possible to apply a PCaPC building to a high-rise building by consuming energy and reducing response shearing force and response deformation.

[0010]

1 to 5 show an embodiment of a frame of a super high-rise PCaPC building according to the present invention. Figure 1 is a bird's eye view,
2 is a base floor plan, FIG. 3 is a frame diagram when a seismic isolation device is provided, FIG. 4 is a frame diagram when a vibration damping device is provided, and FIG. 5 is a diagram illustrating a seismic isolation device and a vibration damping device. It is a shaft assembly figure in the case of having.

In FIG. 2, PCa or PCaPC beam 7
Are press-bonded to PCa columns 6 with a PC steel material to form a floor 8.

FIG. 3 is a frame diagram of a building provided with a seismic isolation device. This building consists of a pile 1, foundation footing 2, foundation beam 3, seismic isolation device 4, column base block 5, PCa column 6, PCa
Alternatively, it is composed of a PCaPC beam 7 and a PC steel material 9.
First, pile 1 and foundation footing 2 and foundation beam 3 are constructed,
The seismic isolation device 4 is installed on the foundation footing 2, and the column base block 5 is installed thereon. Next, column base block 5 and P
The Ca column 6 is press-bonded with the PC steel material 9, and the PCa column 6 and the PC
a or PCaPC beam 7 is press-bonded with a PC steel material 9. Further, the lower PCa column 6 and the PCa column 6 of the corresponding layer are press-bonded with a PC steel material 9, and the PCa column 6 and PCa or PCaPC are joined.
The beam 7 is press-bonded with a PC steel material 9 to form a frame sequentially in an upper layer.

FIG. 4 is a frame diagram in the case where the vibration damping device 10 is provided. The vibration damping device 10 is attached by a jig 11. Reference numerals 1 to 3, reference numerals 6 to 9 and a method of forming the frame are shown in FIG.
Same as above, but the seismic isolation device 4 and the column base block 5 are not installed. After the frame is formed, the vibration damping device 10 and the jig 11 for attaching the vibration damping device are installed. FIG. 5 is a frame diagram in the case where the seismic isolation device 4 and the vibration damping device 10 are provided, and the reference numerals in the drawings are the same as those in FIGS. 3 and 4.

FIG. 6 is a diagram showing the relationship between the story deformation angle of the frame and the number of stories obtained from the response displacement by the seismic response analysis.
In the case where the vibration damping device 10 is provided, the seismic isolation device 4 is provided.
And a case where the vibration damping device 10 is provided, and for comparison, a case where neither the seismic isolation device nor the vibration damping device is provided is shown. FIG. 7 is a diagram showing the relationship between the response shear force and the number of layers based on the seismic response analysis. As shown in FIG. 6, when the seismic isolation device 4 is provided, when the vibration damping device 10 is provided, The case where the device 10 is provided is shown, and for comparison, the case where neither the seismic isolation device nor the vibration damping device is provided is shown. It is clear from FIGS. 6 and 7 that by appropriately designing according to the method of the present invention, the interlayer deformation angle and the layer shearing force can be reduced, and a high-rise PCaPC building can be constructed.

[0015]

According to the present invention, a high-strength PCa member or a frame assembled by bonding the high-strength PCa member or the PCaPC member to the PCaPC member by using a PC steel material is provided. By combining the vibration damping device, it is possible to reduce the response shear force due to the seismic motion, and also to increase the hysteretic energy consumption capacity of the frame to reduce the response deformation.
The building can be made higher by the crimping method. PCa
The structure by the PC crimping method has high strength and enables a large span frame structure. In particular, it is possible to make a free plan in an apartment house, and it is also possible to realize a large pillar-free space in an office building or the like.

According to the high-rise building of the present invention, the use of a high-strength precast concrete member makes it possible to shorten the construction period from high workability compared to the conventional construction method.
The effect that the durability performance is improved from the high quality and the life of the building can be extended can be obtained. Further, by combining the seismic isolation technology and the vibration control technology, an excellent effect of absorbing the shaking of the building due to the seismic motion and improving the livability can be obtained.

[Brief description of the drawings]

FIG. 1 is a bird's-eye view of a super high-rise PCaPC building.

FIG. 2 is a reference floor plan view of a super high-rise PCaPC building.

FIG. 3 is a frame diagram of a high-rise PCaPC building provided with a seismic isolation device.

FIG. 4 is a frame diagram of a super high-rise PCaPC building provided with a vibration damping device.

FIG. 5: High-rise PCaP with seismic isolation device and vibration damping device
It is a frame diagram of C building.

FIG. 6 is a comparison of interlayer deformation angles with and without a seismic isolation device and a vibration damping device.

FIG. 7 is a comparison of response shear force with and without a seismic isolation device and a vibration damping device.

[Explanation of symbols]

 Reference Signs List 1 pile 2 foundation footing 3 foundation beam 4 seismic isolation device 5 column base block 6 PCa column 7 PCa or PCaPC beam 8 floor 9 PC steel 10 vibration damper 11 jig

 ──────────────────────────────────────────────────続 き Continued on the front page (71) Applicant 000001373 Kashima Construction Co., Ltd. 1-2-7 Moto-Akasaka, Minato-ku, Tokyo (72) Inventor Kazuhiro Watanabe 4-83, Nishi-Gotanda, Shinagawa-ku, Tokyo (72 ) Inventor Toshihiko Mukai 2-3-3 Koraku, Bunkyo-ku, Tokyo Inside Nikken Sekkei Tokyo (72) Inventor Mitsuo Hayashi 3-4-1 Marunouchi, Chiyoda-ku, Tokyo P.S. 72) Inventor Ichiro Hamai 3-4-1 Marunouchi, Chiyoda-ku, Tokyo PS Incorporated (72) Inventor Kazufumi Horiuchi 1-2-7 Moto-Akasaka, Minato-ku, Tokyo 72) Inventor Yukimasa Ogihara Kashima Construction Co., Ltd. 1-2-7 Moto-Akasaka, Minato-ku, Tokyo

Claims (1)

[Claims] 1. A high-strength precast concrete member and a high-strength precast concrete member or a precast prestressed concrete member are press-bonded to each other with a PC steel material to assemble a frame, and a seismic isolation device for intensively consuming hysteretic energy is provided. Alternatively, a method for constructing a frame of a high-rise precast prestressed concrete building characterized by incorporating a vibration damping device.