JP2015101876A - Building structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a building structure that enables an increase in economical efficiency and simplification of construction by a simple structure.SOLUTION: A building structure comprises a column-beam frame 2 that is at least partially supported by an independent footing 7, and an aseismatic structure part 1 that is connected to the column-beam frame 2 via at least a beam 3 on an upper story. A footing beam 6 for supporting the aseismatic structure part 1 is extended in such a manner as to overhang into the column-beam frame 2. The aseismatic structure part 1 is arranged on an outer peripheral part of a building. The plurality of aseismatic structure parts 1, which are in positions to sandwich the column-beam frame 2, are bound to one another via the column-beam frame 2.

Description

  The present invention relates to a building structure suitable for a middle- and low-rise building having a large floor area such as a shopping center, a parking lot, a factory, and a warehouse.

  Conventional shopping centers often employ a bi-directional pure ramen frame in order to be able to cope with future layout changes for stores that are the main use.

JP-A-62-86232

  However, when constructing a large-span frame structure with high floor height by a bi-directional pure frame structure, increasing the column beam cross-sectional dimension beyond the required proof stress will increase the number of frames so that horizontal rigidity during an earthquake will not be insufficient. Invite. Usually, in order to increase the degree of fixing of the foundation, the column bases require foundation columns and foundation beams, which leads to further increase in the number of frames and extension of the construction period.

  As shown in FIGS. 4 (A) and 4 (B), the fabric base 51 is provided on the outer peripheral part of the building, and the independent base 52 is provided only on the inner peripheral part, thereby increasing the number of frames and extending the construction period. A technique for suppressing this is proposed in Patent Document 1. However, this known technology is only focused on the foundation, and there is a risk of raising the foundation, and how to ensure the seismic performance of the upper frame based on this foundation method, etc. Reference to the method is not found in US Pat.

  The present invention has been made in consideration of the above-described matters, and an object of the present invention is to provide a building structure that can improve economy and simplify construction with a simple structure.

  In order to achieve the above object, a building structure according to the present invention includes a column beam structure that is at least partially supported by an independent foundation, and an earthquake-resistant structure that is connected to the column beam structure through at least upper-level beams. And a base beam that supports the seismic structure is extended to extend into the column beam frame (claim 1). Here, the beam includes a full beam such as a shaped steel beam and a plate beam, and a non-full beam such as a truss beam and a solid truss beam.

  In the building structure, the seismic structure may be arranged on the outer periphery of the building, and the plurality of seismic structures located at positions sandwiching the column beam frame may be coupled to each other via the column beam frame ( Claim 2). Of course, if it can be suitably implemented, in the said building structure, you may make it distribute | arrange the said earthquake-resistant structure part, for example only to the one side in a building outer peripheral part.

  In the building structure, the foundation beam protruding from the earthquake-resistant structure portion may extend at least one span toward the inside of the column beam frame, or may be connected to an underground outer wall. Here, the structure type of the seismic structure and the column beam frame includes a ramen structure, a pin structure, a brace structure, a truss structure, and the like.

  The said building structure WHEREIN: The said independent foundation may be comprised so that an independent pillar may be supported directly by a foundation footing not via a foundation pillar.

  In the present invention, a building structure capable of improving economy and simplifying construction (labor saving construction) can be obtained with a simple structure.

  That is, in the building structure of the invention according to each claim of the present application, the required beam strength / rigidity for horizontal force is secured by the seismic structure and the foundation beam that bear most of the seismic force. The frame is a long-term member that bears only the vertical load, and the majority of the column beam frame can be supported by an independent foundation. Therefore, the foundation beam is unnecessary, and the economy and workability are improved.

  In the building structure of the invention according to claim 2, the seismic structure is intensively arranged on the outer periphery of the building, and in accordance with this arrangement, for example, a backyard part (for service such as a shopping center handling area or a kitchen) Space) on the outer periphery of the building, and store parts (store space) in other parts (especially in the center of the building). It is possible to easily cope with changes. Moreover, this building structure can be constructed with a simple structure without using a special construction method, and also in this respect, the economical efficiency and the workability are improved.

  In the building structure according to the third aspect of the present invention, no special measures are required for the rising of the foundation beam, and rational treatment using dispersion and resistance by the extended foundation beam or the underground outer wall is possible.

  In the building structure of the invention according to claim 4, in the independent foundation to which the foundation beam is not connected, the height (level) of the foundation footing can be freely adjusted, and the column foot is directly attached to the top of the foundation footing without providing the foundation pillar. Utilizing the fact that it can be installed, it is possible to improve economic efficiency, simplify construction (labor-saving construction), and do not arrange reinforcing bars to form foundation pillars on independent foundations As a result, there is room for the anchor bolts to be placed in the foundation footing, and the workability can be improved.

It is a top view which shows roughly the layout structure of the building structure which concerns on one embodiment of this invention. (A) is the sectional view on the AA line of FIG. 1, (B) is the sectional view on the BB line of FIG. (A) is the column base which provided the foundation beam and the foundation column, (B) is a longitudinal cross-sectional view which shows schematically the structure of the column base without a foundation beam and a foundation column. (A) is a top view which shows the prior art example of the basic structure of a building, (B) is the CC sectional view taken on the line of (A).

  Embodiments of the present invention will be described below with reference to the drawings.

  First, in general, it is desirable that a building such as a shopping center can easily cope with a future layout change of a store which is a main use. And if the main use stores are mainly located in the center of the building and the backyard is mainly located in the outer periphery of the building, it is highly possible that changes in the store layout will affect the arrangement of the backyard. Lower.

  Paying attention to this, the building structure of the present embodiment is not suitable for changing the layout as shown in FIGS. 1 and 2A, but is necessary for rationally providing the building structure with earthquake resistance. The seismic structure (seismic element) 1 that is not allowed is arranged mainly on the outer periphery of the building, and most of the other is constructed by the column beam frame (ramen frame in this example) 2 suitable for layout change.

  Here, the seismic structure 1 bears most of the seismic force, and is constituted by a brace or a seismic wall (iron plate, RC), for example.

  Further, in the present embodiment, as shown in FIG. 2, a plurality of seismic structures are connected to the seismic structure 1 and the column beam frame 2 via at least the upper beam 3 and sandwich the column beam frame 2. The parts 1 are connected to each other via the column beam frame 2.

  In such a building structure, the seismic structure 1 is intensively arranged on the outer periphery of the building. Therefore, according to this arrangement, for example, as shown in FIG. If it is arranged on the outer periphery of the building and the store part (store space) 5 is arranged in the other part, especially the central part of the building, it is easy to change the store layout without impairing the design freedom. It becomes possible to respond. In FIG. 1, the black portion indicates the earthquake resistant structure portion 1, the shaded portion indicates the backyard portion 4, and the blank portion indicates the store portion 5.

  Moreover, in the building structure of this embodiment, as shown to FIG. 2 (A) and (B), the foundation beam 6 is mainly arrange | positioned in the building outer periphery which arrange | positions the earthquake-resistant structure part 1, and the earthquake-resistant structure part 1 Is supported by the foundation beam 6, and at least a part (most part in this example) of the column beam frame 2 is supported by the independent foundation 7. And in order to resist the raising of the foundation by the seismic structure 1, at least a part of the foundation beam 6 that supports the seismic structure 1 is projected toward the inside of the column beam frame 2 (in this example, the inside of the building). Extend.

  Here, the foundation beam 6 projecting from the earthquake-resistant structure portion 1 may project at least one span toward the inside of the column beam frame 2 as shown in FIG. 2, the foundation beam 6 may be connected to the underground outer wall 8 as shown in FIG. Such a configuration does not require any special measures against the floating of the foundation beam 6 and enables a rational treatment using dispersion and resistance by the extended foundation beam 6 or the underground outer wall 8.

  The building structure of the present embodiment described as described above can be easily constructed without using a special construction method, and contributes to improvement of economy and workability.

  Moreover, this building structure secures the necessary proof strength and rigidity against the horizontal force with the seismic structure 1 and the foundation beam 6 that bear most of the seismic force, so that the column beam frame 2 inside the building can only be loaded vertically. The bending of the column base (steel column) 9 (see FIG. 3 (B)), which becomes a long-term member that bears the load, is slight. Therefore, the foundation beam 6 is unnecessary and most of the column beam frame 2 is Since it can be supported by the independent foundation 7, the economy and workability are improved in this respect as well.

  Specifically, as shown in FIG. 3A, in the column base 9 to which the foundation beam 6 is connected, the bottom surface of the foundation footing 10 needs to be positioned further below the bottom surface of the foundation beam 11. Since the height (level) of the foundation footing 10 is lowered, it is necessary to provide the foundation pillar 11. However, as shown in FIG. 3 (B), in the independent foundation 7 to which the foundation beam 6 is not connected, the level of the foundation footing 10 can be freely adjusted, and the pillar is directly attached to the top of the foundation footing 10 without providing the foundation pillar 11. The legs 9 can be provided, and the economic efficiency can be improved and the construction can be simplified (labor saving construction). In addition, when the independent foundation 7 directly supports the column base (independent pillar) 9 by the foundation footing 10 without using the foundation pillar 11, the reinforcing bars for configuring the foundation pillar 11 are not disposed on the independent foundation 7. As a result, there is a margin in the accommodation of the anchor bolts 12 to be placed on the foundation footing 10, which contributes to improvement in workability.

  In FIGS. 3A and 3B, 13 is abandoned concrete, 14 is dirt concrete, 15 is a non-shrink mortar, and 16 is a base plate. Further, in addition to the discarded concrete 13, laying gravel may be applied.

  In addition, this invention is not limited to said embodiment at all, Of course, it can change and implement variously in the range which does not deviate from the summary of this invention. For example, the following modifications can be given.

  The building structure of the above embodiment has an inverted L-shaped plan view shape as shown in FIG. 1, but the shape of the building structure is not limited to this, and various shapes such as a rectangular shape and a round shape in plan view are possible. It can be.

  The building structure of the above embodiment is basically a structure in which the seismic structure 1 is provided on the outer periphery of the building and the column beam frame 2 is provided on the other part, but as is apparent from FIG. It is not necessary to occupy the outer peripheral portion only with the seismic structure 1, and for example, the seismic structure 1 may be provided only on the necessary surface in the structure of the building. Moreover, you may provide the earthquake-resistant structure part 1 in the right-and-left both ends of a construction surface, and may provide in the middle of a building in any one of the left and right in a construction surface. Similarly, the arrangement of the foundation beam 6 and the independent foundation 7 can be determined flexibly according to the structural necessity of the building.

  In the above-described embodiment, a ramen frame is adopted as an example of the column beam frame 2, but the present invention is not limited to this, and for example, a column beam may be pin-joined.

  Needless to say, the above modifications may be combined as appropriate.

DESCRIPTION OF SYMBOLS 1 Seismic structure part 2 Column beam frame 3 Upper-level beam 4 Backyard part 5 Store part 6 Foundation beam 7 Independent foundation 8 Basement outer wall 9 Column base 10 Foundation footing 11 Foundation pillar 12 Anchor bolt 13 Abandoned concrete 14 Dirt concrete 15 No shrinkage Mortar 16 Base plate 51 Cloth foundation 52 Independent foundation

Claims (4)

A column beam structure supported at least in part by an independent foundation, and an earthquake-resistant structure portion connected to the column beam frame via a beam on at least an upper floor;
A building structure characterized in that a foundation beam supporting the seismic structure is extended so as to project toward the column beam frame.   2. The building structure according to claim 1, wherein the seismic structure is disposed on an outer periphery of the building, and the plurality of seismic structures located at a position sandwiching the column beam frame are connected to each other via the column beam frame. .   3. The building structure according to claim 1, wherein the foundation beam protruding from the earthquake-resistant structure portion extends at least one span toward the inside of the column beam frame or is connected to an underground outer wall.   The said independent foundation is a building structure as described in any one of Claims 1-3 comprised so that an independent pillar may be directly supported by a foundation footing not through a foundation pillar.