Building support mechanism

Abstract

To provide a structure capable of appropriately supporting pillars of a building while omitting a rising portion of a foundation as a support mechanism for a building.SOLUTION: A building support mechanism 10 comprises: a mat foundation 20 having a concrete underground beam 22 extending in a predetermined direction; a steel beam 30 provided above the underground beam 22 and extending in a predetermined direction; and a binding material 40 having a lower end embedded in the underground beam 22, which protrudes upward from an upper surface of the underground beam 22, and an upper end supporting the steel beam 30 from below.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a support mechanism for a building, and more particularly to a support mechanism that has a base and is capable of appropriately supporting pillars and the like of a building. [Background technology]

[0002] Some building foundations, especially slab foundations, have a foundation slab and a rising section. The rising section is the part of the slab foundation that is thicker (beam depth) than the surrounding area, and is used to support the pillars of the building.

[0003] To build the slab foundation, for example, concrete for the foundation slab is poured, and after the concrete hardens, a formwork for the rising section is assembled on top of it, and the concrete for the rising section is poured into the formwork. However, with this method, the concrete is poured in two stages, which creates a joint between the foundation slab and the rising section, making it difficult to ensure the strength of the joint.

[0004] Another method for constructing a slab foundation is to assemble a formwork for the foundation slab and a formwork for the rising portion at the same time, and pour the concrete for the foundation slab and the rising portion at the same time (see, for example, Patent Document 1). With this method, the foundation slab and the rising portion are constructed at the same time, so it is possible to avoid the occurrence of joints between the foundation slab and the rising portion. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2003-096792 A Summary of the Invention [Problem to be solved by the invention]

[0006] When constructing the foundation slab and the rising section at the same time, the formwork for the rising section must be placed higher than the formwork for the foundation slab. Therefore, height adjustment devices (spacers) are placed under the formwork for the rising section. In this case, if the formwork is not placed in the correct position relative to the spacer, it may affect the quality of the subsequent construction (for example, the accuracy of the position of the anchors attached to the formwork), so the installation of the spacer and formwork requires skill. Also, when constructing a higher rising section to increase the beam depth for various purposes, the height of the spacer becomes higher, making the installation of the spacer and formwork more difficult.

[0007] For the above reasons, there is a demand for a support mechanism for buildings that has a structure to replace the rising part of the foundation, but even with such a structure, it is necessary to properly support the building's columns, etc., in the same way as the rising part of the foundation.

[0008] Therefore, the present invention has been made in consideration of the above-mentioned problems, and an object of the present invention is to provide a support mechanism for a building that is capable of properly supporting the pillars, etc. of a building while omitting the rising portion of the foundation. [Means for solving the problem]

[0009] The above-mentioned problems are solved by the building support mechanism of the present invention, which comprises a foundation having a concrete underground beam extending in a predetermined direction, a metal beam arranged above the underground beam and extending in a predetermined direction, and a support body whose lower end is buried in the underground beam and protrudes upward from the top surface of the underground beam, and whose upper end supports the metal beam from below.

[0010] The support mechanism for a building of the present invention configured as described above has a metal beam arranged above the underground beam and a support body that supports the metal beam, instead of a rising section made of concrete. This makes it possible to appropriately support the building's columns and the like by the underground beam, the metal beam and the support body while omitting the rising section.

[0011] In addition, in the above-mentioned support mechanism for a building, the support body may be arranged at a plurality of positions in a predetermined direction. According to the above configuration, the metal beam can be appropriately supported in a well-balanced manner by the multiple supports.

[0012] Furthermore, in the above-mentioned building support mechanism, it is preferable that a building column is placed on the upper surface of the metal beam, and the support body is arranged in a position that supports the end of the metal beam in a specified direction. According to the above-mentioned configuration, the pillars of the building are placed on the metal beams, and the metal beams are supported by the supports. At this time, the supports are arranged at positions that support the ends of the metal beams in the extension direction, so that the metal beams can be supported in an appropriate and balanced manner.

[0013] In addition, regarding the support mechanism of the above-mentioned building, a more preferable configuration is that the support body is arranged in the range where the column is placed on the metal beam in a specified direction. According to the above-mentioned configuration, it is possible to more appropriately support the metal beam. This effect is particularly significant when the stress from the pillar increases.

[0014] In the above-mentioned support mechanism for the building, the ground beam may protrude lower than the portion of the foundation other than the ground beam. In this case, it is preferable that a spacer is buried in the portion of the ground beam that is located lower than the portion where the lower end of the support is buried, and the support is placed on the upper surface of the spacer and fixed to the spacer. According to the above configuration, by positioning the spacer and placing and fixing the support on the spacer, the position (level) of the metal beam can be adjusted, and the level of the metal beam can be raised by the amount of the spacer.

[0015] In the above-mentioned support mechanism for a building, a fixing part made of mortar may be provided at the lower end of the ground beam. In this case, it is preferable that the spacer is buried in the ground beam while being placed on the fixing part. According to the above configuration, a fixing portion made of mortar is provided, and the spacer is placed on the fixing portion, so that the level of the support surface for the spacer can be adjusted and the flatness of the support surface can be ensured.

[0016] In the above-mentioned support mechanism for a building, the support body may be made of metal. According to the above configuration, the strength of the support body, in particular the support strength when supporting the metal beam, is ensured, so that the support body can more appropriately support the metal beam.

[0017] Furthermore, in the above-mentioned building support mechanism, it is preferable that the support has an upper plate portion forming the upper end portion of the support, a lower plate portion forming the lower end portion of the support, and a connecting plate portion sandwiched between the upper plate portion and the lower plate portion and extending along a predetermined direction. According to the above configuration, since the metal beam is supported by the support body having higher strength (more specifically, supporting strength), the support body can support the metal beam more appropriately.

[0018] In addition, regarding the support mechanism for the building described above, a more preferable configuration is that the support body further has a reinforcing plate portion sandwiched between the upper plate portion and the lower plate portion and intersecting with the connecting plate portion. According to the above configuration, the metal beam is supported by the support body having a much higher strength (more specifically, supporting strength), so that the support body can support the metal beam more appropriately.

[0019] In addition, in the above-mentioned building support mechanism, the foundation may be a slab foundation and have a perimeter foundation that forms the outer perimeter of the slab foundation, and a foundation slab that is located inside the perimeter foundation in the slab foundation and separated by underground beams. Effect of the Invention

[0020] According to the building support mechanism of the present invention, it is possible to properly support the pillars and the like of a building while omitting the rising portion of the foundation. [Brief description of the drawings]

[0021] [Figure 1] FIG. 1 is a plan view (foundation plan) showing a schematic diagram of a support mechanism of a building according to one embodiment of the present invention. [Diagram 2] FIG. 2 is a diagram showing a support mechanism for a building according to one embodiment of the present invention, as viewed from the direction of the arrow in FIG. 1, and shows a cross section of an underground beam in the diagram. [Diagram 3] FIG. 2 is a view showing a cross section II of FIG. [Figure 4A] FIG. [Figure 4B] FIG. 2 is a horizontal cross section of the support. [Figure 5A] FIG. 13 is a plan view showing a modified example of the support body. [Figure 5B] FIG. 13 is a horizontal cross-sectional view of a modified example of the support body. [Figure 6A] FIG. 1 is an explanatory diagram (part 1) of a procedure for constructing a support mechanism for a building according to one embodiment of the present invention. [Figure 6B] FIG. 2 is an explanatory diagram (part 2) of a procedure for constructing a support mechanism for a building according to one embodiment of the present invention. [Figure 6C] FIG. 3 is an explanatory diagram (part 3) of a procedure for constructing a support mechanism for a building according to one embodiment of the present invention. [Figure 6D] FIG. 4 is an explanatory diagram (part 4) of the procedure for constructing a support mechanism for a building according to one embodiment of the present invention. [Figure 7] FIG. 5 is an explanatory diagram of a modified example of the present invention, and corresponds to FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0022] <<About the support mechanism of a building according to one embodiment of the present invention>> Hereinafter, a support mechanism for a building according to one embodiment of the present invention (hereinafter, this embodiment) will be described with reference to the accompanying drawings. In the drawings, each component is illustrated somewhat simplified or schematic to make the description easier to understand, and the size (dimensions) of each component, the spacing between components, and the dimensional ratios between components shown in the drawings are different from the actual ones. In addition, in this specification, when describing the position, orientation, condition, etc. of each component (building material) and each piece of equipment, unless otherwise specified, the description will refer to the position, orientation, condition, etc. at the time of use, specifically, when the component is installed in a building. In addition, in this specification, "orthogonal," "vertical," "parallel," and "horizontal" include the range of error generally accepted in the technical field of the present invention, and also include states where the directions are shifted within a range of less than a few degrees (e.g., 2 to 3°) from strictly orthogonal, vertical, parallel, and horizontal.

[0023] In the present embodiment, a detached house will be described as an example of a building. However, the support mechanism of the present invention can be used in houses other than detached houses, such as apartments and condominiums, and can also be used in buildings other than houses, such as factories, buildings, warehouses, stores, and facilities (including commercial facilities, entertainment facilities, and public facilities). In the following, the explanation will be given assuming a house with two or more floors.

[0024] In the following description, the three mutually orthogonal directions are referred to as the X direction, the Y direction, and the Z direction. The X direction and the Y direction are horizontal directions, and the Z direction is a vertical direction. The X direction corresponds to the predetermined direction of the present invention. The Y direction corresponds to a direction intersecting both the predetermined direction and the vertical direction of the present invention.

[0025] The support mechanism for a building according to this embodiment (hereinafter, the support mechanism 10) supports the building (framework) under the first floor of the building, and is provided with a foundation having an underground beam 22 as a partition foundation, more specifically, a slab foundation 20. The slab foundation 20 is constructed on a foundation construction surface S (see Figs. 2 and 3) formed by excavating the ground, and its configuration is substantially similar to that of a known slab foundation, except for the underground beam 22 and its surroundings.

[0026] 1, the slab foundation 20 has underground beams 22, a perimeter foundation 24 that constitutes the outer perimeter of the slab foundation 20, and a foundation slab 26 that is located inside the perimeter foundation of the slab foundation 20 and is separated by the underground beams 22. Each part of the slab foundation 20 (i.e., the underground beams 22, the perimeter foundation 24, and the foundation slab 26) is made of concrete, more specifically, made of RC (Reinforced Concrete).

[0027] The underground beams 22 extend in the X direction as shown in Figures 1 and 2, and the building columns are disposed on the upper portions thereof as shown in Figure 3. That is, the underground beams 22 support the columns on their upper surfaces, and more specifically, they support the columns in cooperation with the steel beams 30 and the binding members 40 described below.

[0028] In this embodiment, the columns supported by the underground beams 22 are columns arranged on the first floor of the building, and the columns include columns constituting the bearing wall 100 shown in Fig. 2. The bearing wall 100 has a generally ladder-shaped frame structure configured by arranging a plurality of connecting members 104 (horizontal members) connecting the pillars 102 at intervals in the Z direction between a pair of pillars 102 arranged in the X direction. Specific configurations of the bearing wall 100 include, for example, configurations described in JP 2019-157518 A or JP 2014-47469 A.

[0029] On the other hand, the slab foundation 20 of this embodiment does not have a part corresponding to the raised portion, and the upper end surfaces of the slab foundation 20 excluding the outer perimeter foundation 24 (i.e., the underground beams 22 and the foundation slab 26) are on the same plane in the Z direction.

[0030] The slab foundation 20 of this embodiment does not require the rising portion of conventional foundations, but can adequately support the building's columns in the same way as when the rising portion is included. In addition, in the slab foundation 20 of this embodiment, the rising portion is omitted, so the beam depth (beam cross section) of the foundation can be reduced, and the structure supporting the building's columns can be simplified and made smaller. Furthermore, the slab foundation 20 of this embodiment does not require the assembly of formwork for the rising portion during construction (foundation work), which improves workability.

[0031] To explain the configuration of the support mechanism 10 according to this embodiment in detail, in the slab foundation 20, at least one underground beam 22 is provided in the Y direction as shown in Fig. 1, and is provided to correspond to the position of the building columns in the Y direction. The configuration of each underground beam 22 and its surroundings is common to all the underground beams 22.

[0032] In each underground beam 22, as shown in Fig. 2, a plurality of first reinforcements 60 extending in the X direction are arranged vertically as main reinforcements so as to be parallel to each other. In addition, reinforcing bars 62 (more specifically, shear reinforcements, so-called stirrups) are arranged at regular intervals in the X direction, and each reinforcing bar 62 is wound around each of the first reinforcements 60 so as to surround the first reinforcements 60.

[0033] As shown in Fig. 3, second reinforcements 64a, 64b extending in the Y direction among the reinforcing bars constituting the foundation slab 26 pass through the underground beam 22. A plurality of second reinforcements 64a, 64b (two in Fig. 3) are arranged vertically, and some of the second reinforcements 64a form slab reinforcement. The other second reinforcements 64b bend as reinforcing bars (shear reinforcement bars) for the underground beam 22 at the point from the foundation slab 26 to the underground beam 22, and more specifically, bend so as to enter the protruding portion 28 described later.

[0034] As shown in Fig. 3, the ground beams 22 protrude downward from the portion of the slab foundation 20 other than the ground beams 22, specifically from the foundation slab 26. In other words, the ground beams 22 have a protruding portion 28 that protrudes downward from the lower end surface of the foundation slab 26. As shown in Fig. 3, some of the first reinforcements 60 lined up in the vertical direction (specifically, the first reinforcement 60 located at the lowest position) are arranged on this protruding portion 28.

[0035] 3, a layer of fixing portion 28a made of mortar is provided at the bottom of protrusion 28 (i.e., the lower end of underground beam 22). This fixing portion 28a functions as a mounting floor for spacer 50, which will be described later, and its surface is leveled to be a horizontal plane. This allows spacer 50 to be properly placed (in the correct position) on fixing portion 28a. In the configuration shown in Figure 3, the fixing portion 28a is provided continuously over the entire range from one end to the other end of the underground beam 22 in the X direction, which is the extension direction of the underground beam 22, but the fixing portion 28a may be provided intermittently in the X direction at the installation location of the spacer 50.

[0036] 2 and 3, the support mechanism 10 according to this embodiment has, in addition to the slab foundation 20, steel beams 30 as metal beams, binding materials 40 as supports, and spacers 50. The steel beams 30, binding materials 40, and spacers 50 are provided for each underground beam 22, and the configurations of the steel beams 30, binding materials 40, and spacers 50 provided for each underground beam 22 are common to all underground beams 22.

[0037] The steel beam 30 is made of a long steel material such as an H-shaped steel or a channel steel, and extends long in the X direction. As shown in Figures 2 and 3, the steel beam 30 is arranged above the underground beam 22 in a position parallel to the underground beam 22, and more precisely, it is arranged directly above the underground beam 22. In other words, the steel beam 30 is arranged with its lower surface facing the upper end surface of the underground beam 22, and is supported by the binding material 40.

[0038] 2, the columns of the building, including the bearing wall 100, are placed on the upper surface of the steel beam 30. That is, the lower end of the first floor column is fixed to the upper end of the steel material constituting the steel beam 30 (the upper flange portion in the case of an H-shaped steel). Specifically, a bolt hole is formed in the upper end of the steel material constituting the steel beam 30, and the column (more specifically, the lower end of the column) is fixed to the upper end of the steel beam 30 by inserting a bolt B1 inserted through this bolt hole into a bolt hole provided on the column side.

[0039] In this embodiment, since the steel beam 30 is supported by the binding material 40, the position (level) of the steel beam 30 in the Z direction can be raised, and the height (beam depth) of the steel beam 30 can be reduced accordingly. As a result, the steel beam 30 can be made of the same type of steel material as the H-shaped steel material constituting the beams of the building, specifically, the H-shaped steel material (e.g., H-250) constituting the floor beams of the second floor of the building. This makes it unnecessary to use a special steel material that has a height equivalent to the distance from the underground beam 22 to the bottom end of the column, that is, a steel material that is taller than a normal product, and construction costs can be reduced accordingly.

[0040] The binding material 40 is disposed directly below the steel beam 30 and supports the steel beam 30 from below. Each part of the binding material 40 is made of metal, specifically, steel. However, this is not limited thereto, and some or all of the binding material 40 may be made of a material other than metal, such as a resin material.

[0041] 4A and 4B, the binding material 40 of this embodiment has an upper plate portion 42 forming the upper end portion of the binding material 40, a lower plate portion 44 forming the lower end portion of the binding material 40, and a connecting plate portion 46 that is sandwiched between the upper plate portion 42 and the lower plate portion and extends along the X direction. The upper plate portion 42, the lower plate portion 44, and the connecting plate portion 46 are each made of a flat steel plate, and each of the upper plate portion 42 and the lower plate portion 44 is joined to the connecting plate portion 46 by welding or the like.

[0042] The binding material 40 is arranged so that the upper end surface of the upper plate portion 42 and the lower end surface of the lower plate portion 44 are horizontal, and supports the steel beam 30 by placing it on the upper end surface of the upper plate portion 42. The upper plate portion 42 is also formed with a bolt hole 42a, and the steel beam 30 is fixed to the binding material 40 by inserting the bolt B2 inserted through the bolt hole 42a into a bolt hole provided in the lower portion of the steel beam 30 (in the case of an H-shaped steel, the lower flange).

[0043] The lower plate 44 also functions as an anchor plate, and is fixed to the fixed portion 28a of the underground beam 22 via the spacer 50. As a result, even if a horizontal load such as an earthquake acts on a column such as a bearing wall 100 placed on the steel beam 30, and a force is generated due to the load that tries to pull the binding material 40 out of the fixed portion 28a in the horizontal direction, the binding material 40 can resist the force.

[0044] As shown in FIG. 4B, the binding material 40 of this embodiment further includes a reinforcing plate portion 48 that is sandwiched between the upper plate portion 42 and the lower plate portion 44 and intersects with the connecting plate portion 46 (specifically, substantially perpendicular). The reinforcing plate portion 48 is made of a flat steel plate and is joined to each of the upper plate portion 42, the lower plate portion 44, and the connecting plate portion 46 by welding or the like. In other words, the binding material 40 of this embodiment is configured to have a cross-shaped plate portion between the upper plate portion 42 and the lower plate portion 44. With the binding material 40 configured in this way, sufficient strength (support strength) to support the steel beam 30 is ensured.

[0045] The shape of the binding material 40 is not limited to the shape shown in Figures 4A and 4B, and may be the shape shown in Figures 5A and 5B. The binding material 40 shown in Figures 5A and 5B is configured by disposing an H-shaped plate portion between the upper plate portion 42 and the lower plate portion 44, that is, a connecting plate portion 46 and reinforcing plate portions 48 joined to both ends of the connecting plate portion 46 in the X direction.

[0046] 2 and 3, the lower end of the binding material 40 is embedded in the underground beam 22 and protrudes upward from the upper surface of the underground beam 22, with the upper end supporting the steel beam 30 from below. The height of the portion of the binding material 40 protruding from the upper surface of the underground beam 22, i.e., the protruding amount, may be set according to the height (beam depth) of the steel beam 30 and the distance from the lower end of the column supported by the steel beam 30 to the underground beam 22. In this case, the protruding amount of the binding material 40 may be determined so that an inspection space (underfloor space) is secured below the steel beam 30, and it is preferable to determine the amount so that an underfloor space of 330 mm or more in height is secured, for example.

[0047] In this embodiment, as shown in Fig. 2, one steel beam 30 is supported by multiple binding materials 40, so the binding materials 40 are arranged at multiple locations in the X direction. Specifically, the binding materials 40 are arranged at positions in the X direction that support at least the ends of the steel beams 30. Also, as shown in Fig. 2, in consideration of stress from columns such as the bearing walls 100, the binding materials 40 are arranged in the range in the X direction where the columns are connected to the steel beams 30. This allows the steel beams 30 to be supported in an appropriate and balanced manner by the multiple binding materials 40.

[0048] The number of binding materials 40 used to support one steel beam 30 is not particularly limited, but should be set to an appropriate number taking into consideration the stress from the columns. The placement positions of each binding material 40 in the X direction should also be determined appropriately taking into consideration the stress from the columns, and in particular, the binding materials 40 should be placed in locations where the stress from the columns is greater.

[0049] In addition, in this embodiment, one steel beam 30 is supported by multiple binding members 40, so that multiple binding members 40 are installed between the steel beam 30 and the underground beam 22 at intervals in the X direction. In other words, the steel beam 30, the underground beam 22, and the multiple binding members 40 are arranged in a ladder shape to form a Vierendeel frame. This allows the steel beam 30 and the underground beam 22 to work together to properly support columns such as the load-bearing wall 100. In addition, since both the steel beam 30 and the underground beam 22 bear the support load of the column, the cross section of the underground beam 22 can be made smaller than when the underground beam 22 alone supports the column (more specifically, when a rising portion is provided in the underground beam 22 and the column is supported by the rising portion).

[0050] The spacer 50 is a platform used for adjusting the level of the binding material 40, and is embedded in a portion of the underground beam 22 that is located below the portion where the lower plate portion 44 of the binding material 40 is embedded, as shown in Figures 2 and 3. To explain in more detail, the spacer 50 is embedded in the protrusion 28 provided on the underground beam 22, i.e., the fixing portion 28a, while being placed on the lower end of the protrusion 28. The spacer 50 is fixed to the fixing portion 28a by fastening its lower end to the fixing portion 28a with a fastener B3 such as a nail or an anchor bolt.

[0051] The binding material 40 is placed on the upper surface of the spacer 50. Furthermore, a bolt hole (not shown) is formed in the upper end of the spacer 50, and the bolt B4 inserted into the bolt hole is inserted into a bolt hole provided in the lower plate portion 44 of the binding material 40, thereby fixing the binding material 40 to the spacer 50. By being fixed to the spacer 50, the binding material 40 is disposed above the lower end of the ground beam 22, i.e., the fixed portion 28a, by the height of the spacer 50. Specifically, the lower end of the binding material 40 is located above the lower surface of the portion of the mat foundation 20 other than the ground beam 22 (i.e., the foundation slab 26) in the Z direction. To realize such a configuration, it is preferable to use a spacer 50 having a height according to the height of the convex portion 28, more specifically, a height approximately equal to the height of the convex portion 28.

[0052] <<Support mechanism construction procedure>> Next, a procedure for constructing the support mechanism 10 will be described with reference to FIGS. 6A to 6D. To construct the support mechanism 10, first, a formwork for constructing the slab foundation 20 including the underground beams 22 is assembled, and reinforcement work is performed to place the steel bars that make up the slab foundation 20 (specifically, the first reinforcement 60, the reinforcing bar 62, and the second reinforcement bars 64a, 64b), as shown in FIG. 6A.

[0053] In addition, before pouring the concrete, mortar is poured into the area of ​​the foundation construction surface S where the underground beams 22 are to be constructed, and hardened to pre-construct the fixing portion 28a. At this time, the mortar before hardening is leveled with a metal trowel or the like so that the upper end surface of the fixing portion 28a becomes a flat surface.

[0054] After the fixing portion 28a is constructed, as shown in FIG. 6A, a spacer 50 is placed on the fixing portion 28a, and the spacer 50 is fixed to the fixing portion 28a by fasteners B3 such as nails or anchor bolts. Thereafter, the binding material 40 is placed on the upper end surface of the spacer 50, and the lower end of the binding material 40 is bolted to the upper end of the spacer 50. These operations are repeated multiple times, and multiple binding materials 40 are placed at predetermined intervals in the X direction as shown in FIG. 6B. At this time, it is preferable to determine the placement positions of each of the multiple binding materials 40 using an anchor ruler 70 shown in FIG. 6B.

[0055] The anchor ruler 70 is made of, for example, an H-shaped steel, extends long in the X direction, and has approximately the same shape and size as the steel beam 30. The anchor ruler 70 used in this embodiment has the same size and shape as the steel beam 30, but is lightweight and can be carried by hand because the plate thickness of each part of the anchor ruler 70 is relatively thin. The lower end of the anchor ruler 70 is provided with bolt holes for assembling each of the multiple binding materials 40 arranged in the X direction, and the upper end of the anchor ruler 70 is provided with bolt holes (hereinafter referred to as corresponding holes) at the same locations as the bolt holes provided in the steel beam 30 to support the columns.

[0056] When using the anchor ruler 70, as shown in Fig. 6B, a string 72 is stretched using a predetermined location on the formwork 80 or an anchor bolt B5 arranged within the formwork 80 as a reference point, and the position and attitude of the anchor ruler 70 are adjusted so that the corresponding hole is located at a predetermined position (for example, a position a predetermined distance away from the string 72) relative to the string 72. The anchor ruler 70 is then fixed in the adjusted position and attitude, and the multiple binding materials 40 arranged in the X direction are temporarily fixed to the lower end of the anchor ruler 70 in this fixed state with a bolt or the like. This allows each of the multiple binding materials 40 to be accurately positioned in the correct arrangement position. The normal placement position is a position where the steel beam 30 can be supported at an appropriate position by the binding material 40 placed at that position. In other words, if each of the multiple binding materials 40 is positioned at the normal placement position, the steel beam 30 supported by the multiple binding materials 40 can properly support the pillars of the building as a result, and more simply, the pillars can be properly fixed to the steel beam 30 by the bolt B1 inserted into the bolt hole at the upper end of the steel beam 30.

[0057] As mentioned above, the anchor ruler 70 is lightweight and can be carried by hand, so no equipment for transporting heavy objects such as a crane is required when transporting the anchor ruler 70 during the work of constructing the slab foundation 20 (foundation work).

[0058] Next, concrete is poured into the formwork 80. When the poured concrete hardens, the mat foundation 20 including the underground beams 22 is constructed as shown in Fig. 6C. At this point, as shown in the figure, the lower end of the binding material 40 is embedded in the underground beams 22, and the spacer 50 is embedded in the part below that (specifically, the protruding portion 28).

[0059] Then, as shown in FIG. 6D, the steel beam 30 is placed on the plurality of binding members 40 arranged in the X direction, and the lower end of the steel beam 30 is fixed to each of the plurality of binding members 40 with bolts B2. When the above steps are completed, the support mechanism 10 is completed. Then, construction work is carried out, and the columns of the first floor of the building including the bearing wall 100 are placed on the steel beam 30, and the columns are fixed to the upper end of the steel beam 30 with bolts B1. As a result, the steel beam 30 and the underground beam 22 located directly below it properly support the columns, and more specifically, a Vierendeel frame is formed, forming a structure that can withstand stress from the columns. With the support mechanism 10 constructed according to the above procedure, it is possible to omit the rising portion of the foundation (mat foundation 20) and reduce the cross section of the underground beam 22 while still adequately supporting the pillars of the building.

[0060] <<Other embodiments>> Up to this point, one embodiment of the support mechanism for a building and its construction method (method of constructing the support mechanism) of the present invention has been described, but the above embodiment is merely an example for facilitating understanding of the present invention and does not limit the present invention. In other words, the present invention can be modified and improved without departing from the spirit of the present invention. In addition, the present invention naturally includes its equivalents.

[0061] In the above embodiment, the binding material 40 is embedded in the underground beam 22 placed on the spacer 50, but for example, as shown in FIG. 7, the lower end of the binding material 40 may be directly fixed to the fixing portion 28a, which is the lower end of the underground beam 22, without using the spacer 50. In this configuration, the height of the binding material 40 needs to be higher than in the above embodiment because the spacer 50 is not used, and the higher height makes it difficult to handle the binding material 40. In this respect, the above embodiment is more advantageous.

[0062] In the above embodiment, the steel beam 30 is made of the same type of H-shaped steel (H-250) as the H-shaped steel constituting the floor beams on the second floor of the building, but this is not limited to this. For example, the steel beam 30 may be made of a different type of H-shaped steel (or channel steel) from the H-shaped steel constituting the floor beams. However, from the viewpoint of construction costs, the above embodiment is more advantageous. [Explanation of symbols]

[0063] 10 Support mechanism 20. Foundation 22 Underground beam 24 Periphery Foundation 26 Foundation Slab 28 Convex 28a Fixed part 30 Steel beam (metal beam) 40 Binding material (support) 42 Upper plate part 42a Bolt hole 44 Lower plate part 46 Connecting plate part 48 Reinforcement plate 50 Spacer 60 First Line 62 Reinforcement 64a, 64b 2nd muscle 70 Anchor Ruler 72 Water Thread 80 Formwork 100 Load-bearing wall 102 Post 104 Connecting material B1, B2, B4 bolts B3 Fasteners B5 anchor bolt S Foundation construction side

Claims

1. A foundation having a concrete underground beam extending in a predetermined direction; A metal beam disposed above the underground beam and extending in the predetermined direction; A support member whose lower end is embedded in the underground beam and protrudes upward from the upper surface of the underground beam, and whose upper end supports the metal beam from below; A building support mechanism comprising:

2. The support mechanism for a building according to claim 1 , wherein the support members are arranged at a plurality of locations in the predetermined direction.

3. A building column is placed on the upper surface of the metal beam, The support mechanism for a building according to claim 2 , wherein the support is arranged at a position to support an end of the metal beam in the predetermined direction.

4. The support mechanism for a building according to claim 3 , wherein the support body is disposed in an area in which the column rests on the metal beam in the specified direction.

5. The ground beam protrudes downward from a portion of the foundation other than the ground beam, A spacer is buried in a portion of the underground beam that is located below a portion where the lower end of the support is buried, The building support mechanism according to claim 1 , wherein the support is placed on an upper surface of the spacer and fixed to the spacer.

6. A fixing portion made of mortar is provided at the lower end of the underground beam, The support mechanism according to claim 5 , wherein the spacer is embedded in the ground beam while being placed on the fixed portion.

7. 2. The building support system of claim 1, wherein said support is constructed of metal.

8. The support mechanism for a building as described in claim 7, wherein the support body has an upper plate portion forming an upper end portion of the support body, a lower plate portion forming a lower end portion of the support body, and a connecting plate portion sandwiched between the upper plate portion and the lower plate portion and extending along the specified direction.

9. The support mechanism for a building according to claim 8 , wherein the support body further includes a reinforcing plate portion sandwiched between the upper plate portion and the lower plate portion and intersecting with the connecting plate portion.

10. The support mechanism for a building as described in claim 1, wherein the foundation is a slab foundation and comprises a perimeter foundation that constitutes the outer perimeter of the slab foundation, and a foundation slab that is located inside the perimeter foundation in the slab foundation and separated by the underground beam.

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