JP6446225B2 - Building - Google Patents

Description

  The present invention relates to a building.

  Conventionally, a building in which a plurality of support bases are connected to each other by a passage or the like has been proposed (see, for example, Patent Document 1). Supporting foundations of such buildings are equipped with various seismic elements (columns, pillars, etc.) so that each supporting foundation possesses the required horizontal strength (hereinafter referred to as required strength) independently. It was constructed using earthquake resistant walls, braces, etc.).

Japanese Patent Laid-Open No. 11-210260

  However, from various viewpoints, there is a case where it is not desired to arrange the seismic elements as described above on the support base as much as possible. For example, there is a case where the support base faces the courtyard and there is a case where it is desired to secure a large opening on the side facing this, and in such a case, a seismic wall or a brace is installed on the support base to open the large opening. Covering it was not preferable in terms of design. As described above, the seismic element may impose a design limitation on the design of the support base and may reduce the degree of freedom in the design of the support base. Therefore, there has been a demand for a building that can reduce the seismic elements provided on the support base and improve the freedom of design of the support base.

  This invention is made | formed in view of the above, Comprising: It aims at providing the building which can reduce the seismic element provided in a support base, and can improve the freedom degree of design of a support base.

In order to solve the above-described problems and achieve the object, the building according to claim 1 is a building, and a plurality of buildings as a plurality of buildings arranged on the installation surface at intervals from each other. A plurality of support bases including at least a first support base that does not satisfy the required yield strength alone and a second support base that satisfies the required yield strength alone, and is supported by the plurality of support bases. First support means for connecting the target structure, the first support base and the target structure so that both can be horizontally displaced in the same direction during an earthquake, the second support base and the target And a second support means for connecting the structure so that both can be horizontally displaced in the same direction at the time of an earthquake, and is configured to satisfy the necessary proof stress in the entire building.

  The building according to claim 2 is the building according to claim 1, wherein the plurality of support bases are one support base different from the first support base and the second support base. A third support means including a base, and connecting the third support base and the target structure so that both can be horizontally displaced in different directions during an earthquake.

The building according to claim 3 is the building according to claim 1 or 2,
When the shear deformation of the target structure is smaller than an allowable value,
The possession strength Qu of the building satisfies the following formula.
Qu = (K _a1 × K _b1 / (K _a1 + K _b1 ) + K _a2 × K _b2 / (K _a2 + K _b2 ) +... + K _an × K _bn / (K _an + K _bn )) × δ
≧ α (W ₁ + W ₂ +... + W _n )
(Where n is a natural number of 2 or more)
here,
K _a1 = rigidity of the first support base,
K _b1 = the rigidity of the first support means,
K _a2 = rigidity of the second support base,
K _b2 = the rigidity of the second support means,
K _an = the rigidity of the nth support base,
K _bn = the rigidity of the nth support means,
δ = horizontal displacement of the building,
α = Shear force coefficient at the required proof stress,
W ₁ = weight of first support base + weight of target structure among weights of target structure,
W ₂ = weight of the second support base + weight of the target structure out of the weight of the target structure,
W _n = Weight added to the nth support base among the weight of the nth support base + the weight of the target structure.

  According to the building of claim 1, the target structure is supported by the first support base that does not satisfy the required yield strength alone and the second support base that satisfies the required yield strength alone. It is possible to make up the required strength of the entire building by supplementing the holding strength of the first supporting base with the second supporting base, and to reduce the seismic elements provided on the first supporting base. It is possible to improve the degree of freedom in designing the support base.

  According to the building according to claim 2, since the third support base and the target structure are connected so that both can be horizontally displaced in different directions during an earthquake, the third support means is provided. Even if the target structure is displaced in various directions within the horizontal plane, the possibility of causing deformation or the like in each support base can be reduced.

According to the building according to claim 3, the holding strength Qu of the building is Qu = (K _a1 × K _b1 / (K _a1 + K _b1 ) + K _a2 × K _b2 / (K _a2 + K _b2 ) + ... + K _an × K _bn / (K _an + K _bn )) × δ ≧ α (W ₁ + W ₂ + ... + W _n ) It is possible to suitably select the first support means and the second support means having appropriate rigidity in order to satisfy the required proof stress for the entire building.

It is a top view which shows the building which concerns on embodiment of this invention. It is a figure which shows a base part, Comprising: Fig.2 (a) is a top view, FIG.2 (b) is a front view. It is a figure which shows the external appearance of the circumference | surroundings of a 1st support part, Comprising: Fig.3 (a) is sectional drawing in the vertical cross section along radial direction, FIG.3 (b) is a side view which shows a handrail, FIG.3 (c) is FIG. It is a BB arrow sectional view in Drawing 3 (a). It is a figure which shows the external appearance of the periphery of a 3rd support part, Comprising: Fig.4 (a) is sectional drawing in the vertical cross section along radial direction, FIG.4 (b) is a side view which shows a handrail, FIG.4 (c) is FIG. It is CC sectional view taken on the line in Fig.4 (a). It is sectional drawing corresponding to the AA arrow cross section of the building which concerns on the modification 1 in FIG. It is a figure which shows the external appearance of the periphery of the 1st support part which concerns on the modification 2, Comprising: It is sectional drawing in the vertical cross section along radial direction.

  Embodiments of a building according to the present invention will be described below in detail with reference to the accompanying drawings. First, [I] the basic concept of the embodiment will be described, then [II] the specific content of the embodiment will be described, and finally, [III] a modification to the embodiment will be described. However, the present invention is not limited to the embodiments.

[I] Basic Concept of Embodiment First, the basic concept of the embodiment will be described. The present embodiment relates to a building. Here, the purpose of use of the building is arbitrary. For example, the building can be used as a dining facility, an amusement facility, a residential facility, or the like, but in the present embodiment, it is described as being used as a commercial facility. A person who uses this building (for example, a visitor or manager of a commercial facility) will be described as a “user” below. Moreover, in this Embodiment, description is abbreviate | omitted suitably about a well-known point as a structure of a building.

  Here, the performance of the building according to the embodiment will be described below using “retained yield strength” and “required yield strength”. Here, “holding strength” refers to the resistance (holding horizontal strength) that the structure can withstand horizontal forces such as seismic force and wind force. “Necessary strength” It is the holding strength (required holding horizontal strength) required by law. Thus, the embodiment considers only the horizontal component. For example, the term “weight” includes the weight for calculating the force acting in the horizontal direction. As for the vertical component, the structure (including each supporting base, target structure, and each support portion described later) is configured so as to have a proof strength required by law and regulations by a known method. To do.

[II] Specific Contents of Embodiment Next, specific contents of the present embodiment will be described.

(Constitution)
FIG. 1 is a plan view showing a building 1 according to the present embodiment. FIG. 2 is a cross-sectional view taken along the line AA of FIG. As shown in FIGS. 1 and 2, the building 1 according to the present embodiment includes a support base 10, a target structure 20, and a support portion 30. Here, hereinafter, the XX ′ direction in FIGS. 1 and 2 is referred to as a “width direction”, particularly the X direction is referred to as a “right direction”, and the X ′ direction is referred to as a “left direction” as necessary. . Further, the YY ′ direction is referred to as “depth direction”, in particular, the Y direction is referred to as “front direction”, and the Y ′ direction is referred to as “rear direction”. Further, the ZZ ′ direction is referred to as “height direction”, in particular, the Z direction is referred to as “upward direction”, and the Z ′ direction is referred to as “downward direction”. Further, a direction from the planar annular center position in the annular portion 21 of the target structure 20 to be described later to each portion of the annular portion 21 is referred to as a “radial direction”. In FIG. 2, the ground surface is indicated by GL, and the region above the ground surface is hereinafter referred to as “ground”.

(Configuration-support base)
The support base 10 is a target structure support unit that is disposed on the installation surface (on the ground surface in the present embodiment) and supports the target structure 20. The support base 10 includes a first support base 11, a second support base 12, a third support base 13, and a fourth support base 14. These support bases 10 are spaced apart from each other on the ground. The buildings are arranged so as to surround the courtyard 2, and each is a building that is used by a user in an arbitrary use mode (in this embodiment, a commercial facility). The first support base 11, the second support base 12, the third support base 13, and the fourth support base 14 are simply referred to as “support base” 10 when it is not necessary to distinguish them from each other.

  The 1st support base 11 is the building in which the store for customers in a commercial facility is arranged, and is the support base 10 which does not satisfy a necessary proof stress independently. Specifically, the holding strength of the first support base 11 is when the first support base 11 is present alone (when the first support base 11 is not connected to another support base 10 via the target structure 20 or the support portion 30). Does not meet the required strength required by law. However, as will be described later, the first supporting base 11 is connected to the other supporting base 10, so that the total holding strength of the building 1 satisfies the required strength required by laws and regulations. The problem does not occur.

  Thus, the reason for constructing the first support base 11 so as not to satisfy the required strength alone is to reduce the seismic elements (for example, the seismic walls, braces, columns, etc.) provided on the first support base 11. is there. That is, in a building in which a customer store such as the first support base 11 is arranged, the side facing the courtyard 2 or the side opposite to the side (the side that is most visible from the outside of the building 1). ) May require a large opening or a glass construction. For this purpose, it is preferable to reduce the number of seismic elements to be installed. Therefore, the first support base 11 is formed as a structure not provided with sufficient seismic elements to satisfy such a demand. In addition, the 1st support base 11 is not restricted to such a design viewpoint, but includes the building which does not satisfy required proof strength independently from various viewpoints.

  The second support base 12 is a building that is used as a management building in a commercial facility, and is a support base 10 that satisfies the required proof stress alone. Specifically, the holding strength of the second support base 12 is determined when the second support base 12 exists alone (when the second support base 12 is not connected to another support base 10 via the target structure 20 or the support portion 30). The required proof strength required by laws and regulations is satisfied. That is, the building used as the management building like the second support base 12 is constructed so as to satisfy the necessary proof stress alone as in the past because the design demands are less than the first support base 11 described above. The

  In addition, the 3rd support base 13 and the 4th support base 14 are the buildings where the store for customers in a commercial facility is arranged. However, unlike the 1st support base 11, the 3rd support base 13 and the 4th support base 14 are demonstrated as what is the support base 10 which satisfy | fills required proof stress independently. In short, among the four support bases 10, only the first support base 11 is formed as a structure that does not satisfy the required proof stress.

  Here, the shape and structure of each support base 10 are arbitrary, and each support base 10 can be configured in a mutually different shape and structure except for the above points. However, in the present embodiment, in order to simplify the explanation and illustration, each support base 10 will be described as a reinforced concrete building having a substantially quadrangular prism shape. Of the plurality of support bases 10, any one of the support bases 10 or all of the support bases 10 may be configured in, for example, a substantially cylindrical shape, or may be configured as a steel structure, a steel reinforced concrete structure, or a wooden structure. May be.

(Configuration-target structure)
The target structure 20 is a structure supported by the support base 10 and includes an annular portion 21 and a handrail 22 (not shown in FIG. 2).

  The annular portion 21 is a planar annular structure that surrounds the hollow space portion, and is disposed horizontally above each support base 10 by being connected to the upper surface of the support base 10 via a support portion 30. Has been.

  Here, the upper surface of the annular portion 21 is configured as a passage through which a user can move. Specifically, an access path (for example, the upper surface and the annular portion of the support base 10 is made accessible to a plurality of positions on each support base 10 from the upper surface of each support base 10 to the upper surface of the annular portion 21. And the like (not shown) are provided, and the user can freely enter and exit the upper surface of each support base 10 and the upper surface of the annular portion 21 through this access path. That is, the user can move to the other support base 10 through the annular portion 21. The purpose of use of the annular portion 21 is arbitrary, but the annular portion 21 in the present embodiment can be used not only as a passage, but also as a track for a user to jog or run on the upper surface of the annular portion 21. For this reason, on the upper surface of the annular portion 21, a material (for example, a polyurethane-based rubber material) suitable for such a purpose of use is laid.

  The handrail 22 is a known fence that is provided at both ends in the radial direction of the annular portion 21 over the entire circumference of the annular portion 21 and prevents the user from falling from the annular portion 21. .

(Structure-Bearing)
The support part 30 is a support means for supporting the target structure 20, and is placed on each support base 10. The support portion 30 is formed on the first support portion 31 placed on the first support base 11, the second support portion 32 placed on the second support base 12, and the third support base 13. A third support portion 33 to be placed and a fourth support portion to be placed on the fourth support base 14 are included. In addition, when it is not necessary to distinguish these 1st bearing part 31, the 2nd bearing part 32, the 3rd bearing part 33, and the 4th bearing part 34 from each other, it will only be called "the bearing part" 30 and demonstrated.

  The 1st support part 31 is the 1st support means which connects the 1st support base 11 and the object structure 20 so that both can be horizontally displaced in the same direction at the time of an earthquake. The installation position of the first support portion 31 is arbitrary as long as it is a position between the first support base 11 and the annular portion 21, but in the present embodiment, as shown by black circles in FIG. In the following description, it is assumed that a plurality (five in the present embodiment) are provided at equal intervals between the first support base 11 and the target structure 20, and all of them are formed in the same manner.

  Here, the above-mentioned “horizontal displacement in the same direction” refers to the first support base 11 and the first structure 20 that supports the target structure 20 in the event of an earthquake (including shaking when receiving a wind load). It means that the support part 31 is displaced substantially integrally in the horizontal direction. “Displaceable” means not only when the support base 10 and the annular portion 21 are displaced due to the earthquake motion, but also when the support base 10 and the annular portion 21 are not displaced due to smallness even if there is an earthquake motion. It means to include. Specifically, the first bearing 31 can be any bearing except for a bearing having almost no rigidity such as a sliding bearing or a rolling bearing, for example, a steel brace (brace structure). It is possible to transmit the horizontal displacement of the first support base 11 damped to the target structure 20 such as a support for binding the first support base 11 and the target structure 20 as in the above, or a seismic isolation rubber. Includes possible bearings. Moreover, it may be configured as a steel structure, a steel reinforced concrete structure, or the like.

  3A and 3B are views showing the external appearance of the periphery of the first support portion 31, in which FIG. 3A is a sectional view in a vertical section along the radial direction, and FIG. 3B is a side view showing a handrail 22. FIG.3 (c) is a BB arrow sectional drawing in Fig.3 (a). As shown in FIG. 3, the first support portion 31 is schematically configured to include a fixed base 31a, a base plate 31b, and a square steel 31c.

  The fixed base 31 a is a substantially rectangular parallelepiped concrete material having a predetermined height (for example, 650 mm) in the height direction, and protrudes upward from the upper surface of the first support base 11. The base plate 31b is a plate-like body installed on the upper surface of the fixing base 31a via a non-shrinking mortar 31d. Is joined to. The square steel 31c is a known square steel pipe and is welded to the base plate 31b at its lower end, and an H-shaped steel beam is connected to the upper end as a spring beam. The annular portion 21 is joined. As described above, the first support base 11 and the annular portion 21 are fixedly connected to each other, so that the first support base 11 and the annular portion 21 can be tightly connected via the first support portion 31. . In addition, since the specific structure of such a 1st support part 31 is well-known, detailed description is abbreviate | omitted.

  The 2nd support part 32 is the 2nd support means which connects the 2nd support base 12 and the object structure 20 so that both can be horizontally displaced in the same direction at the time of an earthquake. The installation position of the second support portion 32 is arbitrary as long as it is a position between the second support base 12 and the annular portion 21, but in the present embodiment, as shown in FIG. 2 A plurality (five in the present embodiment) are provided at equal intervals between the support base 12 and the target structure 20, and all of them are described as being formed identically. The specific configuration of the second support portion 32 is the same as that of the first support portion 31 described above, and therefore, the position is indicated by a black circle in FIG. To do.

  The third support portion 33 is a third support means for connecting the third support base 13 and the target structure 20 so that both can be horizontally displaced in different directions during an earthquake. The installation position of the third support portion 33 is arbitrary as long as it is a position between the third support base 13 and the annular portion 21, but in the present embodiment, as shown by white circles in FIG. In the following description, it is assumed that a plurality (five in the present embodiment) are provided at equal intervals between the third support base 13 and the target structure 20, and all of them are formed identically.

  Here, the above-mentioned “horizontal displacement in different directions” means that, in the event of an earthquake, the third support portion 33 that supports the target structure 20 is in a horizontal direction regardless of the displacement direction of the third support base 13. It means to be displaced. In addition, “displaceable” means that the third support base 13 and the annular portion 21 are displaced differently due to the earthquake motion, the same displacement, or the small displacement even if there is an earthquake motion. 3 Means including the case where the support base 13 and the annular portion 21 are not displaced. As for the displaceable direction, it is preferable to be displaceable in any direction along the horizontal plane, but it may be displaceable only in a specific direction. Specifically, the third bearing portion 33 includes a bearing having almost no rigidity such as a sliding bearing or a rolling bearing.

  4A and 4B are views showing the external appearance of the periphery of the third support portion 33, in which FIG. 4A is a sectional view in a vertical section along the radial direction, and FIG. 4B is a side view showing a handrail 22. FIG.4 (c) is CC sectional view taken on the line in Fig.4 (a). As shown in FIG. 3, the third support portion 33 is generally configured to include a fixing base 33a, a smooth surface plate 33b, a base plate 33c, and an H-shaped steel 33d.

  The fixed base 33a is a substantially rectangular parallelepiped concrete material having a length (for example, 650 mm) along a predetermined height direction, and protrudes upward from the upper surface of the third support base 13. The smooth surface plate 33b is a plate-like body installed on the lower surface of the base plate 33c via the non-shrink mortar 33e on the upper surface of the fixed base 33a, and is a known sliding material (tetrafluoroethylene resin (PTFE ) Trademark: Teflon). The base plate 33c is formed as a long plate-shaped body made of stainless steel placed on the upper surface of the smooth surface plate 33b, and a planar square-shaped loose hole 33f penetrating along the thickness direction extends along the long side direction of the base plate 33c. It is juxtaposed in two places. The H-shaped steel 33d is a known H-shaped steel pipe, and is welded to the base plate 33c at its lower end and is bolted to the lower surface of the annular portion 21 at its upper end. The anchor bolt is inserted from the upper surface of the base plate 33c so as to reach the fixing base 33a sequentially through the loose hole 33f, the smooth surface plate 33b, and the non-shrink mortar 33e. With such a configuration, even when the third support base 13 is horizontally displaced in the event of an earthquake, the base plate 33c and the smooth plate 33b are horizontally displaced in different directions, and the anchor bolts inserted into the smooth plate 33b. Is slidable in the front-rear and left-right directions within the square loose hole 33f provided in the base plate 33c, and fluctuates in the direction between them. As described above, since the base plate 33c and the smooth surface plate 33b are not fixedly connected to each other, the base plate 33c slides on the upper surface of the smooth surface plate 33b in the event of an earthquake to absorb the earthquake motion. The vibration of the support base 13 can be prevented from being directly transmitted to the target structure 20. In addition, since the specific structure of such a 3rd support part 33 is well-known, detailed description is abbreviate | omitted.

  The fourth support part 34 is a fourth support means for connecting the fourth support base 14 and the target structure 20 so that both can be horizontally displaced in different directions during an earthquake. The installation position of the fourth support portion 34 is arbitrary as long as it is the position between the fourth support base 14 and the annular portion 21, but in the present embodiment, as shown in FIG. A description will be given assuming that a plurality of (four in the present embodiment) are provided at equal intervals between the four support bases 14 and the target structure 20, and all of them are formed identically. The specific structure of the fourth support portion 34 can be formed in the same manner as the third support portion 33 described above. Therefore, the position is indicated by a white circle in the same manner as the third support portion 33 in FIG. Description is omitted.

(About the possession strength of buildings)
Then, the determination conditions of the rigidity of each support part 30 for the possession proof of the building 1 comprised as mentioned above to satisfy a required proof stress are demonstrated. First, the condition for the possession proof Qu of the building 1 to satisfy the required proof Qun of the building 1 can be expressed by the following formula (1).
Qu ≧ Qun --- Formula (1)

Here, the holding strength Qu of the building 1 can be expressed by the following formula (2).
Qu = Kδ --- Formula (2)
here,
K = rigidity of building 1
δ = horizontal displacement of building 1

Moreover, the required yield strength Qun of the building 1 can be expressed by the following formula (3).
Qun = αW --- Formula (3)
here,
α = Shear force coefficient at the required proof stress,
W = weight of building 1

Therefore, in view of the above formula (1), formula (2), and formula (3), it is necessary to satisfy the following formula (4) in order for the possessed proof stress of the building 1 to satisfy the required proof stress.
Kδ ≧ αW --- Expression (4)

Moreover, the rigidity K of the building 1 can be expressed by the following formula (5).
K = K _a1 × K _b1 / (K _a1 + K _b1 ) + K _a2 × K _b2 / (K _a2 + K _b2 ) + K _a3 × K _b3 / (K _a3 + K _b3 ) + K _a4 × K _b4 / (K _a4 + K _b4 ) --- Formula (5)
here,
K _a1 = the rigidity of the first support base 11,
K _b1 = the rigidity of the first support 31
K _a2 = the rigidity of the second support base 12,
K _b2 = the rigidity of the second support portion 32,
K _a3 = the rigidity of the third support base 13,
K _b3 = the rigidity of the third support portion 33,
K _a4 = the rigidity of the fourth support base 14,
K _b4 = the rigidity of the fourth support portion 34.
As described above, a plurality of the first support portions 31 (five in the present embodiment) are provided, but the above-mentioned “rigidity K _b1 of the first support portion 31” refers to the plurality of first support portions 31. It is a value obtained by synthesizing the rigidity of the first support portion 31, and is a value calculated by a known calculation method. The same applies to the rigidity K _b2 of the second support part 32, the rigidity K _b3 of the third support part 33, and the rigidity K _b4 of the fourth support part 34.

Moreover, the weight W of the building 1 can be expressed by the following formula (6).
W = W ₁ + W ₂ + W ₃ + W ₄ ---Formula (6)
here,
W ₁ = weight of the first support base 11 + weight of the target structure 20 added to the first support base 11;
W ₂ = weight added to the second support base 12 among the weight of the second support base 12 + the weight of the target structure 20,
W ₃ = weight added to the third support base 13 among the weight of the third support base 13 + the weight of the target structure 20,
W ₄ = weight added to the fourth support base 14 among the weight of the fourth support base 14 + the weight of the target structure 20.
In addition, the weight added to each support base 10 among the weight of said object structure 20 calculates the control area with respect to each support part 30 by a well-known method, and according to the calculated control area, object structure 20 Can be determined by assigning the weight of Incidentally, the weight acting in the vertical direction among the weight of the target structure 20 is borne by the entire building 1.

Therefore, the following formula (7) is derived by substituting the above formula (5) and the above formula (6) into the above formula (4).
(K _a1 × K _b1 / (K _a1 + K _b1 ) + K _a2 × K _b2 / (K _a2 + K _b2 ) + K _a3 × K _b3 / (K _a3 + K _b3 ) + K _a4 × K _b4 / (K _a4 + K _b4 )) × δ ≧ α (W ₁ + W ₂ + W ₃ + W ₄ ) --- Equation (7)

As described above, in the present embodiment, since the possession strength Qu ₁ of the first support base 11 does not alone satisfy the required strength Qun ₁ of the first support base 11, the rigidity K of the first support base 11 _a1 must satisfy the condition of the following formula (8).
Qu ₁ <Qun ₁
K _a1 δ <αW ₁
K _a1 <αW ₁ / δ --- Formula (8)
Further, as described above, in the present embodiment, the holding strength Qu ₂ of the second support base 12 alone satisfies the required strength Qun ₂ of the second support base 12, and thus the rigidity K of the second support base 12 _a2 must satisfy the condition of the following formula (9).
Qu ₂ > Qun ₂
K _a2 δ> αW ₂
K _a2 > αW ₂ / δ --- formula (9)

In view of the above, on the condition that the rigidity K _a1 of the first support base 11 satisfies the above expression (8) and the rigidity K _a2 of the second support base 12 satisfies the above expression (9), the above expression ( 7) The rigidity of each support portion 30 is determined so as to satisfy 7), thereby reducing the seismic elements of the first support base 11 (while reducing the holding strength of the first support base 11), and the first support base 11 It is possible to make the structure satisfying the necessary proof strength as a whole of the building 1 by supplementing the proof strength of the steel with the other supporting base 10.

For example, as a numerical example, in the following equation (7), K _a1 = 100,000 [kN / m], K _a2 = K _a3 = K _a4 = 200,000 [kN / m], δ = 0.01 [ m], α = 0.35, W ₁ = 2,000 [kN], W ₂ = 2,000 [kN], W ₃ = 2,000 kN], and W ₄ = 2,000 [kN]. (10) is shown.
(100,000 [kN / m] × K _b1 / (100,000 [kN / m] + K _b1 ) +200,000 [kN / m] × K _b2 / (200,000 [kN / m] + K _b2 ) +200,000 [kN / m] × K _b3 / (200,000 [kN / m] + K _b3 ) +200,000 [kN / m] × K _b4 / (200,000 [kN / m] + K _b4 )) × 0.01 [m] ≧ 0.35 (2,000 + 2,000 + 2,000 + 2,000) —the formula (10)
Here, as the rigidity of each support portion 30 that satisfies the above formula (10), for example, K _b1 = 80,000 [kN / m], K _b2 = 160,000 [kN / m], K _b3 = 160,000 [kN / m], K _b4 = 160,000 [kN / m], and the like are conceivable. Note that such numerical values are merely examples, and the above formula (7) can be applied to all structures by appropriately changing the preconditions such as K _{a1 to} K _a4 , W _{1 to} W ₄ , δ, and α. .

Here, for example, when the third support base 13, the fourth support base 14, and the target structure 20 are horizontally displaced in different directions as shown in FIG. become that way. First, since the stiffness K _b3 of the third support portion 33 and the stiffness K _b4 of the fourth support portion 34 are close to 0, (K _a1 × K _b1 / (K _a1 + K _b1 ) + K _a2 × K _b2 / ( K _a2 + K _b2 )) δ is applicable. Further, “weight added to the first support base 11 out of the weight of the target structure 20” of W _{1 on} the right side and “weight added to the second support base 12 out of the weight of the target structure 20” of W _{2 on} the right side. The weight added to the third support base 13 among the weight of the target structure 20 and the weight added to the fourth support base 14 among the weight of the target structure 20 are allocated by a known method, It can implement suitably by adding each.

The third support base 13, the third support portion 33, the fourth support base 14, and the fourth support portion 34 may not be provided. In this case, the above formula (7) is expressed by the following formula: (11).
(K _a1 × K _b1 / (K _a1 + K _b1 ) + K _a2 × K _b2 / (K _a2 + K _b2 )) δ ≧ α (W ₁ + W ₂ ) --- formula (11)

Thus, the above formula (7) according to the present embodiment is applicable to any building when the number of support bases 30 and the number of support parts 30 placed thereon are two or more. When the above formula (7) is expressed as a general formula, the following formula (12) is obtained.
(K _a1 × K _b1 / (K _a1 + K _b1 ) + K _a2 × K _b2 / (K _a2 + K _b2 ) +... + K _an × K _bn / (K _an + K _bn )) × δ
≧ α (W ₁ + W ₂ +... + W _n ) --- Expression (12)
(Where n is a natural number of 2 or more)
here,
K _an = the rigidity of the nth support base,
K _bn = the rigidity of the nth support means,
W _n = Weight added to the nth support base among the weight of the nth support base + the weight of the target structure 20.

  In addition, said Formula (7) is a type | formula about the case where the object structure 20 has sufficient rigidity. Here, “sufficient rigidity” is a case where the shear deformation of the target structure 20 is smaller than an allowable value, and the allowable value can be arbitrarily set. For example, 1/1000 (rad) to It can be set to 1/2000 (rad).

(Effect of embodiment)
Thus, according to the building 1 of the present embodiment, the target structure 20 is supported by the first support base 11 that does not satisfy the required yield strength alone and the second support base 12 that satisfies the required yield strength alone. By doing so, it is possible to make up the required strength of the building 1 as a whole by supplementing the holding strength of the first support base 11 with the second support base 12 via the target structure 20, and the first support. It is possible to reduce the seismic elements provided on the base 11 and improve the design freedom of the first support base 11.

  In addition, since the third support base 33 and the target structure 20 are connected to connect the third support base 13 and the target structure 20 so that they can be horizontally displaced in different directions at the time of the earthquake, the target structure 20 is provided at the time of the earthquake. Even if it is displaced in various directions in the horizontal plane, it is possible to reduce the possibility of causing deformation or the like in each support base 10.

Moreover, the possession proof Qu of the building 1 is Qu = (K _a1 × K _b1 / (K _a1 + K _b1 ) + K _a2 × K _b2 / (K _a2 + K _b2 ) +... + K _an × K _bn / Since (K _an + K _bn )) × δ ≧ α (W ₁ + W ₂ +... + W _n ) is satisfied, the building 1 as a whole satisfies the required yield strength. Therefore, the first support part 31 and the second support part 32 having appropriate rigidity can be suitably selected.

[Modifications to Embodiment]
Although the embodiments of the present invention have been described above, the specific configuration and means of the present invention can be arbitrarily modified and improved within the scope of the technical idea of each invention described in the claims. Can do. Hereinafter, such a modification will be described.

(About problems to be solved and effects of the invention)
First, the problems to be solved by the invention and the effects of the invention are not limited to the above contents, and may vary depending on the implementation environment and details of the configuration of the invention. May be solved, or only some of the effects described above may be achieved. For example, even if the building 1 according to each embodiment cannot improve the design freedom of the first support base 11, the seismic elements provided on the first support base 11 are reduced by a technique different from the conventional one. If it is possible, the problem of the present invention has been solved.

(About dimensions and materials)
The dimensions, shapes, materials, ratios, and the like of each part of the building 1 described in the detailed description of the invention and the drawings are merely examples, and may be any other dimensions, shapes, materials, ratios, and the like.

(About support base)
In the present embodiment, it has been described that the target structure 20 is supported by the four support bases 10. However, as long as at least two support bases 10 are provided, the number of the support bases 10 is arbitrary. Further, in the present embodiment, the description has been given on the assumption that the support base 10 that does not satisfy the required proof stress is only the first support base 11, but is not limited thereto, and for example, three support bases 10 out of the four support bases 10. However, it is good also as what is the support base 10 which does not satisfy required proof stress. In other words, as long as at least one of the plurality of support bases 10 has the required strength, the building 1 that satisfies the required strength as a whole of the building 1 can be constructed.

(About the support section)
In the present embodiment, the third support part 33 and the fourth support part 34 are formed as a support part 30 different from the first support part 31 and the second support part 32. However, the first support part 31 and the second support part 32 are the same. You may form as the support part 30 same as the support part 32. FIG. When configured in this way, the rigidity of the first support part 31 can be compensated not only by the second support part 32 but also by the third support part 33 and the fourth support part 34, and the load of the second support part 32 can be increased. It can be reduced.

Moreover, in this Embodiment, although the support part 30 was directly mounted above the support base, it is not restricted to this. FIG. 5 is a cross-sectional view corresponding to the cross section taken along the line AA of FIG. 1 of the building 100 according to the first modification. As shown in FIG. 5, when the height of some of the support bases 110 (in FIG. 5, the second support base 111) is not the same as the height of the other support bases 110, the second support base 110 A base 120 having a brace structure for adjusting the height may be formed on the base 111, and a support portion 30 (the second support portion 32 in FIG. 5) may be provided on the base. When such a structure is adopted, as the rigidity K _a2 of the second support base 12 of each formula described above, the rigidity of the structure including the second support base 111 itself and the mount 120 is used. Note that the support portion 30 may be formed between the gantry 120 and the second support base 111. Further, the same pedestal 120 may be formed not only on the second support base 111 but also on another support base 110.

  Moreover, in this Embodiment, although the 1st bearing part 31 and the 2nd bearing part 32 were comprised using the square steel 31c, it does not have rigidity almost like a sliding bearing and a rolling bearing, but it is not restricted to this. Any bearing can be used except the bearing. FIG. 6 is a view showing the external appearance of the periphery of the first support portion 130 according to the second modification, and is a cross-sectional view in a vertical cross section along the radial direction. As shown in FIG. 6, the first support portion 130 is composed of two column members 150 joined on each fixing base 140 and a beam member 160 that connects these two column members 150 to each other. It is also good. Moreover, you may add the brace which is not illustrated to this ramen structure.

(Appendix)
The building of Supplementary Note 1 is a building, which is a plurality of support bases installed on the installation surface, and a first support base that does not satisfy the required strength alone and a second that satisfies the required strength alone. A plurality of support bases including at least a support base, a target structure supported by the plurality of support bases, and the first support base and the target structure both horizontally in the same direction during an earthquake. First support means for connecting so as to be displaceable, and second support means for connecting the second support base and the target structure so that both can be horizontally displaced in the same direction during an earthquake. And is configured to satisfy the necessary proof stress in the entire building.

  The building of appendix 2 is the building of appendix 1, wherein the plurality of support bases include a third support base that is one support base different from the first support base and the second support base, And a third support means for connecting the third support base and the target structure so that both can be horizontally displaced in different directions during an earthquake.

The building of appendix 3 is the building of appendix 1 or 2,
When the shear deformation of the target structure is smaller than an allowable value,
The possession strength Qu of the building satisfies the following formula.
Qu = (K _a1 × K _b1 / (K _a1 + K _b1 ) + K _a2 × K _b2 / (K _a2 + K _b2 ) +... + K _an × K _bn / (K _an + K _bn )) × δ
≧ α (W ₁ + W ₂ +... + W _n )
(Where n is a natural number of 2 or more)
here,
K _a1 = rigidity of the first support base,
K _b1 = the rigidity of the first support means,
K _a2 = rigidity of the second support base,
K _b2 = the rigidity of the second support means,
K _an = the rigidity of the nth support base,
K _bn = the rigidity of the nth support means,
δ = horizontal displacement of the building,
α = Shear force coefficient at the required proof stress,
W ₁ = weight of first support base + weight of target structure among weights of target structure,
W ₂ = weight of the second support base + weight of the target structure out of the weight of the target structure,
W _n = Weight added to the nth support base among the weight of the nth support base + the weight of the target structure.

(Additional effects)
According to the building described in appendix 1, the target structure is supported by supporting the target structure with the first support base that does not satisfy the required strength alone and the second support base that satisfies the required strength alone. The second support base can be used to supplement the holding strength of the first support base, and the entire building can be configured to meet the required strength, and the first support can be provided by reducing the seismic elements provided on the first support base. It is possible to improve the degree of freedom in designing the foundation.

  According to the building described in appendix 2, the third support base and the target structure are provided with the third supporting means for connecting the three supporting bases and the target structure so that they can be horizontally displaced in different directions at the time of the earthquake. Even if the target structure is displaced in various directions in the horizontal plane, it is possible to reduce the possibility of causing deformation or the like in each support base.

According to the building described in appendix 3, the holding strength Qu of the building is Qu = (K _a1 × K _b1 / (K _a1 + K _b1 ) + K _a2 × K _b2 / (K _a2 + K _b2 ) +・ ・ + K _an × K _bn / (K _an + K _bn )) × δ ≧ α (W ₁ + W ₂ +... + W _n ) It is possible to suitably select the first support means and the second support means having appropriate rigidity in order to satisfy the necessary proof stress as the whole object.

DESCRIPTION OF SYMBOLS 1 Building 2 Courtyard 10 Support base 11 1st support base 12 2nd support base 13 3rd support base 14 4th support base 20 Target structure 21 Annular part 22 Handrail 30 Support part 31 First support part 31a Fixing base 31b Base plate 31c Square steel 31d Non-shrink mortar 32 2nd support part 33 3rd support part 33a Fixed base 33b Smooth plate 33c Base plate 33d H-shaped steel 33e Non-shrink mortar 33f Loose hole 34 4th support part 100 Building 110 Support base 111 Second support Base 120 Base 130 First support 140 Fixed base 150 Column member 160 Beam member

Claims (3)

A building,
A plurality of support bases as a plurality of buildings arranged at intervals on the installation surface, the first support base that does not satisfy the required strength alone, and the second support base that satisfies the required strength alone A plurality of support bases including at least
A target structure supported by the plurality of support bases;
First support means for connecting the first support base and the target structure so that both can be horizontally displaced in the same direction during an earthquake;
A second support means for connecting the second support base and the target structure so that both can be horizontally displaced in the same direction during an earthquake,
Constructed to meet the required proof stress throughout the building,
Building. The plurality of support bases include a third support base which is one support base different from the first support base and the second support base,
A third support means for connecting the third support base and the target structure so that both can be horizontally displaced in different directions during an earthquake,
The building according to claim 1. When the shear deformation of the target structure is smaller than an allowable value,
The possession strength Qu of the building satisfies the following formula.
Qu = (K _a1 × K _b1 / (K _a1 + K _b1 ) + K _a2 × K _b2 / (K _a2 + K _b2 ) +... + K _an × K _bn / (K _an + K _bn )) × δ
≧ α (W ₁ + W ₂ +... + W _n )
(Where n is a natural number of 2 or more)
here,
K _a1 = rigidity of the first support base,
K _b1 = the rigidity of the first support means,
K _a2 = rigidity of the second support base,
K _b2 = the rigidity of the second support means,
K _an = the rigidity of the nth support base,
K _bn = the rigidity of the nth support means,
δ = horizontal displacement of the building,
α = Shear force coefficient at the required proof stress,
W ₁ = weight of first support base + weight of target structure among weights of target structure,
W ₂ = weight of the second support base + weight of the target structure out of the weight of the target structure,
W _n = weight of the nth support base + weight of the target structure added to the nth support base,
The building according to claim 1 or 2.

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