JP5541499B2 - Building structure - Google Patents

Description

  The present invention relates to a structure of a high-rise or super-high-rise building, and more particularly to a structure suitable for application to a building having a different plan in a high-rise part and a low-rise part.

As a structural form of a high-rise building or a super high-rise building, for example, a so-called mega structure (mega frame) form as shown in Patent Document 1 or Patent Document 2 is known.
This is because the main building of the entire building is composed of columns with a much larger section (mega-columns) and beams with multiple beams (mega-beams) over multiple floors compared to the columns in ordinary buildings. Can be omitted or greatly reduced, and it is easy to secure a large space, and it is becoming popular as a structural type of large-scale high-rise or super-high-rise buildings.

JP 2003-253910 A JP 2003-328586 A

  By the way, in a high-rise building or a super-high-rise building, it is common that a low-rise part and a high-rise part differ in a plane plan, ie, a planar shape, a plane plan, a use, etc. For example, in large hospital buildings, it is common for the low-rise part to be the treatment floor and the high-rise part to be the ward floor, and in the hotel architecture, the lobby or banquet hall is located in the low-rise part and the high-rise part is the guest room floor. Therefore, in each case, the floor area of the low-rise part is made larger than the floor area of the high-rise part, and a relatively large area is arranged in the low-rise part and the high-rise part is arranged in the high-rise part. In general, a large number of relatively small living rooms are arranged, and the position of the partition wall is usually greatly different between the low-rise part and the high-rise part.

Therefore, in such a building, it is preferable to set the structure plan of the low-rise part and the high-rise part optimally according to each application and plan, for example, change the position of the column in the low-rise part and the high-rise part respectively. There are many cases where it is desired to place the optimal position.
However, when the main structure of the entire building is simply a megastructure type, it is not always easy to do so, and usually there is not a few design constraints on the other side as the optimal structure type for either one. Is inevitable.

  In view of the above circumstances, an object of the present invention is to provide an effective and appropriate structure that can be optimally designed for both high-rise and low-rise buildings in this type of building.

The invention according to claim 1 is a structure applied to a building having a different plan in the high-rise part and the low-rise part, and the columns arranged at predetermined intervals in the row direction corresponding to the positions of the outer periphery of the high-rise part. And a girder-direction large beam and a span-direction large beam erected between the pillars in both the high-rise part and the low-rise part constitute a megastructure frame as the main frame of the entire building, and the high-rise part has the span structure A middle column supporting the middle part of the large beam in the direction is provided, and the large beam and the middle column in the span direction constitute a feeler deal frame as an inner frame of the high layer part, and the high layer part constituting the feeler deal frame as steel columns which functions stud as bending pillars, large overall the Vierendeel bridge Frames to be provided to support hanging from the top of the high-rise section, a substantially central position on the lower part Provided with a pillar, by providing an internal girder Longitudinal direction supported by the pillar, characterized in that configure the internal Frame low-rise portion by the their mainstay and internal girders.

  Invention of Claim 2 is the structure of the building of Claim 1, Comprising: The pillar which comprises the said megastructure frame, and the girder-direction large beam erected between the pillars are made of reinforced concrete, and the span direction The large beam is a composite beam in which the end of a steel beam is covered with reinforced concrete.

  The invention according to claim 3 is the structure of the building according to claim 2, wherein prestress is introduced into an end portion of the composite beam.

  The invention according to claim 4 is the structure of the building according to claim 2 or 3, characterized in that the end portions of the pillars, the large beams in the row direction and the composite beams are formed of precast concrete.

Invention of Claim 5 is a structure of the building of any one of Claims 1-4 , Comprising: The outer periphery beam and outer wall joined to the said pillar are provided in the position inside the building of this pillar, and a pillar The shape is projected outside the outer wall surface.

Invention of Claim 6 is the structure of the building of any one of Claims 1-5 ,
It is characterized by the seismic isolation device supporting the entire upper and lower floors.

According to the first aspect of the present invention, as a main frame of the entire building, a megastructure comprising columns installed in a substantially concentrated manner on the outer periphery, a girder in the row direction installed between the columns, and a span in the span direction Since the frame is adopted, and the minimum necessary internal frames are provided independently for the high and low layers, the high-rise unit and the high-rise unit can be basically secured with excellent seismic performance. It is easy to secure the flexibility in plan planning in both low-rise parts and there are few restrictions in plan planning. For example, the column position is optimal for both the high-rise part and the low-rise part corresponding to their use and plan plan. It is possible to arrange freely in the position.
In addition, since the inner frame of the high-rise part is composed of the feeler-deal frame and the internal structure of the low-rise part is composed of the large black pillars and the internal beams in the crossing direction, both the high-rise part and the low-rise part have excellent earthquake response reduction effect. Excellent floor vibration characteristics can be obtained.
In addition, since the entire feeler-deal frame is suspended and supported from the top of the high-rise part, the feeler-deal frame has a rigid structure not only in the horizontal direction but also in the vertical direction. In addition, as the steel column that functions as the bending column of the high-rise part of the feeler-deal frame, it increases the rigidity of each floor of the high-rise part without the need for diagonal materials such as lattices in braces and trusses. It is possible to reduce the flat deformation and vertical deformation of the floor as well as floor vibration.

  According to the second aspect of the present invention, the column and the beam in the row direction in the megastructure frame are RC beams, and the span beam is a composite beam of RC and S frames. In addition, the above-mentioned composite beam has a low beam structure and a long span, and the rigidity at the beam end portion can be sufficiently secured.

  According to the third aspect of the present invention, the prestress is introduced into the beam end of the composite beam, so that the rigidity can be further increased.

  According to the fourth aspect of the present invention, since the RC structural element is formed of precast concrete, it is possible to achieve a high degree of PCa, excellent workability, and sufficient reduction in work period and cost. it can.

According to the fifth aspect of the present invention, since the columnar shape is a so-called out frame that protrudes to the outside of the outer wall surface, the columnar shape and the beam shape do not protrude into the building as usual. It is selfish and it is possible to secure a large indoor effective area by arranging the column positions on the outside as much as possible, and a favorable appearance that is deeply carved in design is obtained.

According to the sixth aspect of the invention, since the whole of the high-rise part and the low-rise part is supported by isolation, an excellent isolation effect can be obtained for the entire building.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 illustrates an embodiment of the present invention, and is an elevation view illustrating a frame of an entire building according to the structure of the present invention. It is a top view which shows the frame of a high-rise part similarly. It is a top view which shows the frame of a low-rise part same as the above. It is a figure which shows the structural example of the composite beam as a large beam of a span direction similarly. It is a figure which shows the other structural example of a composite beam same as the above.

An embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is an elevation view showing a frame of the entire building according to the structure of the present invention, FIG. 2 is a plan view showing a frame of a high-rise part, and FIG.

The building shown in the figure is a high-rise building with 2 floors below ground and 23 floors above ground. Structurally, it is underground (basement-1st floor), low-rise (1 floor-10 floors), and high-rise (ground) 11th floor to the top floor), the floor area of the low-rise part is almost twice the floor area of the high-rise part, and the high-rise part is provided in a tower shape directly above the right half of the low-rise part in the figure It is what is said.
For example, a hospital is suitable for the use of this building, and common rooms such as machine rooms are arranged in the basement, the lower floors are mainly used as medical floors, and the higher floors are mainly used as hospital rooms. Is preferable.
In the present embodiment, the underground portion functions as a lower structure with respect to the upper structure (the whole of the lower layer and the higher layer), and in the illustrated example, the seismic isolation device 1 (laminated rubber) installed at the column head of the column on the basement floor. However, the present invention does not necessarily assume a base-isolated structure, and the use of the base-isolated structure is optional.

  In this building, the high-rise part and the low-rise part directly below it are constructed integrally with the main structure of the megastructure frame 2 common to both, and independent internal frames are provided in both the high-rise part and the low-rise part.

That is, as shown in FIGS. 1, 2, and 3, the pillars 3 are arranged relatively densely at predetermined intervals in the direction of the row corresponding to the position of the outer periphery of the high layer portion, and both the high layer portion and the low layer portion are arranged. In FIG. 1, a large beam 4 in the column direction (Y direction) is installed between the pillars 3 and a long span beam 5 is installed in the span direction (X direction). 4 and the large beam 5 in the span direction constitute a megastructure frame 2 as a whole main frame of the high-rise part and the low-rise part immediately below the high-rise part.
Although not shown in FIGS. 2 and 3, if necessary, small beams in the row direction may be installed between the large beams 5 in the span direction at desired intervals.

In the present embodiment, the column 3 and the beam beam 4 in the row direction constituting the megastructure frame 2 are RC columns and RC beams made of ordinary reinforced concrete, but the span beam 5 is a long-span composite beam. It is said.
That is, as shown in FIG. 4 (enlarged view of the IV part in FIG. 1), the high beam 5 in the span direction is mainly composed of a steel beam 5a and its end is covered with reinforced concrete 5b (in other words, made of S It is a composite beam (only the end of the beam is made of SRC), and prestress is applied by tensioning and fixing the PC steel material 5c to the joint of the reinforced concrete 5b at the end and the column 3 to which it is joined. It has been introduced.

As shown in FIG. 5 (enlarged view of portion V in FIG. 1), the lower beam span beam 5 is also a composite beam in which the end of the steel beam 5a is covered with reinforced concrete 5b in the same manner as the higher beam beam 5. However, pre-stress is omitted here as shown in (a), or if necessary, pre-stressing is performed by tensioning and fixing the PC steel material 5c as shown in (b) as in the high-rise part. It is also possible to introduce stress.
As such a composite beam, those disclosed in Japanese Patent Publication No. 4-38854 and Japanese Patent Application Laid-Open No. 2006-144535 can be suitably employed.

And in the building of this embodiment, in addition to the above-mentioned megastructure frame 2, each floor of the high-rise part is provided with two studs 6 that support the middle part of the span-direction large beam (composite beam) 5, A feeler deal frame 7 as an internal frame of the high-rise part is constituted by the large beams 5 and the studs 6 in the span direction.
The above-mentioned inter-column 6 functions as a bending column by a steel column, and does not require diagonal materials such as lattices in braces or trusses, so that the rigidity of each high-rise floor is increased and flat deformation and vertical deformation during an earthquake And floor vibration can be reduced. In this embodiment, as shown in FIG. 1, the floor pillars 6 of each floor are provided at positions that are continuous in the vertical direction, and the feeler deal frame 7 of each floor is integrally continuous throughout the high-rise part via the pillars 6 of each floor. And the feeler deal frame 7 is installed in a form that is suspended and supported from the top of the high-rise section via the brace 8, so that it is sufficiently rigid not only in the horizontal direction but also in the vertical direction. It has a structure.
Note that the number of the studs 6 provided on each floor is not necessarily two. The required number of the pillars 6 may be optimally designed in consideration of the span of the large beam 5 and the required floor vibration characteristics. Since at least two frames are required to construct the deal frame 7, this is usually sufficient.
Moreover, when constructing such a feeler deal frame, the construction method described in Japanese Patent No. 3690481 can be suitably employed.

On the other hand, as shown in FIG. 3, two large black pillars 9 are provided at the substantially central position of each floor and are supported by the large black pillars 9 in the lower layer part located immediately below the high part. A large beam 10 is erected, and the large black pillar 9 and the inner large beam 10 constitute a low-rise internal frame.
The large black column 9 may be a steel column having a required cross section by S construction, but an RC column, an SRC column, or a CFT column (concrete-filled steel pipe column) can also be used, and the internal large beam 10 may be a steel beam, It may be a structure.
The number of large black pillars 9 is not limited to two as shown in the figure, and the required number and installation position are optimally set in consideration of the floor area of the lower layer, the planar shape, the span of the internal large beam 10, and the like. It ’s fine. However, the provision of a large number of large black pillars 9 naturally increases the number of pillars on the lower floors and takes the gist of the present invention, so it should be limited to the minimum necessary number.

Also, as shown in FIGS. 1 and 3, the structure of the portion of the lower layer portion that is off the higher layer portion (the left half portion in the drawing) is basically the portion immediately below the high layer portion (the right half portion in the drawing). It may be configured in the same manner as. That is, in that portion, the columns 3 ′ are arranged at intervals in the direction of the rows at the outer peripheral position of the lower layer portion (with the same interval as the above-described columns 3 arranged corresponding to the outer peripheral position of the higher layer portion). In addition, a large beam 4 'is installed between the columns 3' and a large beam 5 'in the span direction is installed between the column 3' and the above-mentioned column 3, and then a large black column 9 is provided at a substantially central position. It is only necessary to provide 'and an internal girder 10' in the column direction.
In this case, as in the case of the above-mentioned megastructure frame, the outer frame by the columns 3 ′ and the beam beams 4 ′ in the row direction may be made of RC, and the beam beam 5 ′ in the span direction may be a long span composite beam. The large beam 5 ′ and the inner large beam 10 ′ in the direction of the beam may be set to the necessary cross-sectional dimensions here. Usually, as shown in the figure, the cross beam is smaller than the large beam 5 and the inner large beam 10 just below the high-rise part. That's it.

According to the above structure, the main frame of the entire building is composed of the pillars 3 that are substantially concentrated on the outer periphery, the girder-direction large beams 4 and the span-direction large beams (composite beams) 5 installed between the columns 3. Since the Megastructure 2 was adopted and the minimum required internal frames were provided independently for the upper and lower floors, the seismic performance of the Megastructure 2 could be basically secured. Moreover, it is easy to ensure flexibility in plan planning in both the high-rise part and the low-rise part, and there are few restrictions in plan planning.
Therefore, according to the structure of the present invention, it is possible to freely set the column position at the optimum position corresponding to the use and plan of both the high layer portion and the low layer portion. Therefore, it is suitable as a structural form of a building such as a hospital or a hotel whose plan is greatly different.

In particular, as in the above-described embodiment, as a large beam 5 in the span direction in the megastructure frame 2, a composite beam mainly composed of an S structure and having an SRC structure at the end and prestressed at the end is adopted as necessary. For example, the rigidity at the end of the beam can be sufficiently secured while having a low beam and a long span.
In addition, the high-rise part is configured with a feeler frame 7 that further supports the composite beam with the inter-column 6, and the low-rise part supports the composite beam via the large black pillar 9 and the internal large beam 10. Both have excellent earthquake response reduction effect and excellent floor vibration characteristics.

  In addition, the structure of the present invention can be said to be a hybrid structure in which RC structure and S structure are optimally combined as in the above embodiment, but it is also possible to freely combine SRC structure, CFT structure and other structures. In addition, since it is possible to introduce advanced PCa (precast concrete) and prestress for RC structural elements, it is possible to shorten the construction period and cost by combining various structures and construction methods optimally. We can plan enough.

  As shown in FIGS. 2 to 3, the pillar 3 and the pillar 3 ′ provided on the outer periphery of the building are provided at positions where the outer peripheral beam and the outer wall are shifted to the inside of the building, and the column shape is changed to the outer wall surface. It is preferable to protrude outward. In this way, if the outer frame is a so-called out frame, the column shape or beam shape does not protrude greatly in the building as in the normal case, so it is easy to use and the position of the column 3 is as much as possible. It is possible to secure a large indoor effective area by disposing on the outside side, and a favorable appearance that is deeply carved in design is obtained.

  The embodiment of the present invention has been described above. However, the above embodiment is merely a preferable example, and the present invention is within a range that does not depart from the gist of the present invention, that is, a mega as an overall main structure of the high-rise part and the low-rise part. As long as the structure is constructed with the feeler deal frame as a high-rise internal frame and the large black pillars and internal beams as the low-level internal frame, the scale, form and use of the entire building are arbitrary. Of course, it goes without saying that the specific configuration of the structural elements of each part can be freely designed and deformed.

1 Seismic Isolator 2 Megastructure Frame 3 Pillar 4 Large Beam (Digital Direction)
5 Large beam (span direction, composite beam)
5a Steel beam 5b Reinforced concrete 5c PC steel 6 Spacer 7 Feelendel frame 8 Brace 9 Large black pillar 10 Internal girder (in the column direction)

Claims (6)

It is a structure that is applied to buildings with different floor plans in the high-rise part and the low-rise part,
Columns arranged at predetermined intervals in the row direction corresponding to the positions of the outer periphery of the high-rise portion, and the large beam in the row direction and the large beam in the span direction laid between the pillars in both the high-rise portion and the low-rise portion And the mega structure frame as the main frame of the entire building,
In the high-rise part, a pillar supporting the middle part of the span-direction large beam is provided, and a feeler deal frame as an internal frame of the high-rise part is configured by the large beam in the span direction and the pillar.
And, as a steel column that functions as a bending column, the middle column of the high-rise part that constitutes the feeler-deal frame, the whole of the feeler-deal frame is suspended and supported from the top of the high-rise part,
The low-rise building is provided with a large black pillar at a substantially central position, and an internal girder in the direction of the row is supported by the large black pillar, and the internal structure of the low-rise building is configured by the large black pillar and the internal girder. Structure. The structure of the building according to claim 1,
The columns constituting the megastructure frame and the girder-direction large beams installed between the columns are made of reinforced concrete, and the span-direction large beams are composite beams in which the ends of the steel beams are covered with reinforced concrete. Characteristic building structure. A building structure according to claim 2,
A building structure characterized in that prestress is introduced into an end portion of the composite beam. A structure of a building according to claim 2 or 3,
The structure of the building characterized in that the pillar, the beam in the direction of the beam and the ends of the composite beam are formed of precast concrete. The structure of the building according to any one of claims 1 to 4 ,
A building structure characterized in that an outer peripheral beam and an outer wall joined to the column are provided at a position inside the building of the column, and a column shape is projected to the outside of the outer wall surface. It is the structure of the building of any one of Claims 1-5 ,
A building structure characterized by the seismic isolation system supporting the entire upper and lower floors.

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