JP4446544B2 - Basic structure of a house - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a basic structure of a house, and more particularly to a basic structure of a house that can shorten the work period and can make use of an underfloor space.
[0002]
[Prior art]
As a typical example of the foundation structure of a house, there is a convex-shaped cloth foundation in which concrete is cast at a construction site to construct a foundation beam and a footing. In this foundation structure, when the house is a wooden building, a wooden base is horizontally attached to the upper part of the foundation beam, and a pillar or joist of the house is attached to the foundation, and when the house is a steel structure, it is attached to the upper part of the foundation beam. It is common to mount a pillar and mount a floor panel.
[0003]
The cloth foundation is generally used in a house and has a very convenient foundation structure. However, it becomes a part to attach a wooden base or a steel column, such as the need to create a form to realize a convex-shaped cross-section by using cast-in-place concrete and to follow the construction sequence There is a problem that it is difficult to obtain the level of the top of the placed concrete, and it is essential to perform the work of leveling the top again after demolding.
[0004]
As a foundation structure of a house that can solve the above problems, a foundation using concrete is proposed for the footing part by replacing the rising part (foundation beam part) of the fabric foundation with a steel foundation beam made of H-shaped steel. Has been. In this foundation structure, a plurality of steel foundation beams are arranged in a grid according to the foundation plan of the target house, and the connection parts that abut at the ends or in the middle of each steel foundation beam are joined by bolts, etc. After reinforcing bars are placed in a plane defined by multiple steel foundation beams, concrete is placed to embed the lower part of the steel foundation beams and all the steel foundation beams are integrated. Constructed solid foundation.
[0005]
In the foundation structure configured as described above, the top ends of the steel foundation beams are continuous, and there is no great difficulty in setting the top ends at the same level. For this reason, there is an excellent aspect that leveling after construction is unnecessary and the durability of the steel foundation beam is good. Moreover, since the accuracy of the top level of the steel foundation beam is guaranteed and it is continuous, it is possible to cope with any position where the pillars constituting the building frame are installed, and the pillars. There is also an excellent aspect of being able to sufficiently counter the pulling force and compressive force acting on the.
[0006]
Furthermore, by using a solid foundation, it is possible to reduce the depth of the foundation as compared with the case of the cloth foundation, and it is also possible to reduce the amount of soil excavation and reduce the soil removal treatment.
[0007]
[Problems to be solved by the invention]
As described above, in the solid foundation structure using steel foundation beams, work such as joining reinforcing bars to the lower flange of the steel foundation beams or arranging stud reinforcements is necessary, and the workability deteriorates. Arise. In addition, the contact surface between steel and concrete increases, and it is necessary to perform a process (a process for preventing both from coming into direct contact) in order to ensure durability, and the work becomes complicated. In addition, in order to secure the necessary bending rigidity, a relatively large H-section steel is required for use as a house beam, and it is impossible to perform construction without using heavy machinery. Furthermore, a large H-section steel is required. There is also a cost problem.
[0008]
In addition, because the underfloor space is divided into a grid by the steel foundation beams, it is necessary to devise measures for maintenance inspection under the floor (for example, to form manholes in the steel foundation beams). As the effective depth of the steel becomes shallower, it is necessary to consider the storage of these when installing underfloor storage or installing elevator pits. There is a problem in that it is necessary to lower the top end of the foundation beam, which is disadvantageous because the beam performance deteriorates compared to the general part.
[0009]
An object of the present invention is to provide a foundation structure for a house that can improve workability, facilitate maintenance and inspection of the underfloor space, and reduce the amount of iron used.
[0010]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the first house foundation structure according to the present invention is provided with a leg portion for attaching a pillar supporting the house column to at least an end portion of the concrete foundation beam. This And The concrete foundation beam is preset with an optimum width dimension to counteract forces such as ground strength of the ground for constructing the house, weight of the house and horizontal force assumed to act on the house. A rectangular cross section having a height dimension capable of realizing a cross sectional shape that does not cause distortion exceeding the allowable strain range, and the top end level of the concrete foundation beam is set higher than the ground level. Has been The column is provided with a top plate for mounting the column, a transmission member that has an upper end fixed to the top plate and receives a pulling force acting on the top plate, and is disposed on the lower end side of the transmission member. The pulling force acting on Said A pull-out preventing member that transmits to a leg portion of the concrete foundation beam, and the pull-out preventing member is at least from a plane dimension of the transmitting member. Too large Embedded in the leg of the concrete foundation beam The transmission member and the top plate are exposed above the top end level of the concrete foundation beam. It is characterized by that.
[0011]
In the above-mentioned housing foundation structure, a leg for attaching a column supporting the column of the building is formed at least at the end of the concrete foundation beam, and a pulling force or a compressive force that the column acts on the column against the leg Since it is attached integrally so as to be able to counteract the force of the column, after attaching the pillars that make up the building's housing to the pillars, the pillars are subjected to compressive or pulling force due to the vertical or horizontal force acting on the pillars. When acting, these forces can be transmitted to and supported by the concrete foundation beam via the support column, and the support column will not fall over or break down the concrete foundation beam.
[0012]
The concrete foundation beam has a width dimension corresponding to the strength of the ground, vertical force and horizontal force acting on the building, and a cross-sectional shape set so that the distortion caused by the action of the force falls within an allowable range. Is formed. Although such a cross-sectional shape cannot be uniquely set, it is preferably a rectangle or a quadrangle including a square in consideration of the number of steps constituting a formwork when placing concrete on site. By forming the concrete foundation beam in such a shape, it is easy to arrange bars and cracks are not easily generated. For this reason, it can be preferably applied to a long-life house (long-life house) having a useful life of 50 years or more.
[0013]
In the above-mentioned foundation structure, the support column is installed so as to protrude from the top end of the concrete foundation beam, and a gap is formed between the top end of the concrete foundation beam and the upper end of the support column. For this reason, it becomes possible to enter the underfloor space through the gap, and the maintenance inspection under the floor becomes easy. In addition, by using the concrete foundation beams as described above, it is not necessary to make a solid foundation structure. As a result, the depth under the floor is not regulated by the concrete, and consideration of the storage when installing the underfloor storage and elevator There is no need to do.
[0014]
In addition, since the foundation can be constructed by integrally attaching the pillar supporting the pillar to the concrete foundation beam, the top level of the lightweight pillar is extremely small compared to the pillar constituting the frame. By adjusting, the level as a basis can be obtained and the work becomes easy. In particular, it is possible to set the position of the column and level the column without attaching the column directly to the concrete foundation beam.
[0015]
If there is a possibility that columns need to be provided in parts other than the legs in the concrete foundation beam, the corresponding part may be set to a sufficient strength.
[0016]
Further, the second house foundation structure according to the present invention is provided with a leg portion for attaching a column supporting the house column to at least an end portion of the concrete foundation beam. This And The concrete foundation beam is preset with an optimum width dimension to counteract forces such as ground strength of the ground for constructing the house, weight of the house and horizontal force assumed to act on the house. A rectangular cross section having a height dimension capable of realizing a cross sectional shape that does not cause distortion exceeding the allowable strain range, and the top end level of the concrete foundation beam is set higher than the ground level. Has been The column is provided with a top plate for mounting the column, a transmission member that has an upper end fixed to the top plate and receives a pulling force acting on the top plate, and is disposed on the lower end side of the transmission member. The pulling force acting on Said A pull-out prevention member that transmits to the legs of the concrete foundation beam, and the pull-out prevention member is constituted by a plurality of flat plates having substantially the same dimensions as the top plate, and these flat plates are connected to the lower end of the transmission member. And is embedded in the leg portion of the concrete foundation beam. The transmission member and the top plate are exposed above the top end level of the concrete foundation beam. It is characterized by this.
[0017]
In any one of the above-mentioned housing foundation structures, the pull-out preventing member is preferably embedded in the leg portion of the concrete foundation in a state of being surrounded by a reinforcing bar that constitutes the leg portion of the concrete foundation beam. .
[0018]
In any one of the above-mentioned residential foundation structures, the pull-out prevention member is preferably supported by a PC plate, and the PC plate is also embedded in the leg portion of the concrete foundation.
[0019]
Moreover, the 3rd house foundation structure which concerns on this invention is provided with the leg part for attaching the support | pillar which supports the pillar of a house to the at least edge part of a concrete foundation beam. This And The concrete foundation beam is preset with an optimum width dimension to counteract forces such as ground strength of the ground for constructing the house, weight of the house and horizontal force assumed to act on the house. A rectangular cross section having a height dimension capable of realizing a cross sectional shape that does not cause distortion exceeding the allowable strain range, and the top end level of the concrete foundation beam is set higher than the ground level. Has been The column is provided with a top plate for mounting the column, a transmission member that has an upper end fixed to the top plate and receives a force acting on the top plate, and is disposed on the lower end side of the transmission member and mounted on the leg. The force acting on the transmission member Said A pull-out preventing member for transmitting to the leg portion of the concrete foundation beam, and a base plate is disposed at a lower portion which is a lower end portion of the leg portion of the concrete foundation, and one end is attached to the base plate and the other end is Concrete foundation beam Anchor bolts projecting in the height direction are provided, and the pull-out prevention member is fastened to the anchor bolts. The transmission member and the top plate are exposed above the top end level of the concrete foundation beam. It is characterized by this.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a preferred embodiment of the basic structure of the house will be described with reference to the drawings. FIG. 1 is a perspective view for explaining the overall structure of the foundation structure. FIG. 2 is a diagram for explaining the relationship between the foundation structure and a part of the building formed on the upper part of the foundation. FIG. 3 is a diagram illustrating an example of a support column. FIG. 4 is a diagram for explaining a structure for integrating the support column and the concrete foundation beam. FIG. 5 is a diagram for explaining a configuration for making up between the lower part of the outer wall and the concrete foundation beam. FIG. 6 is a diagram for explaining another example of a structure in which a column and a concrete foundation beam are integrated.
[0021]
In the foundation structure according to the present embodiment, at least an end portion of the concrete foundation beam is formed with a leg portion that is disposed immediately below a pillar that constitutes the housing of the house and is attached to a column that supports the pillar. It is composed by attaching the struts integrally to the base, and the mechanical function of the footing and foundation beam in the conventional cloth foundation, or the solid concrete and H-shape in the solid foundation by the conventional steel beam The mechanical functions of steel are replaced by concrete foundation beams, and the structural functions for supporting the columns in these conventional foundations are replaced by columns.
[0022]
As shown in FIGS. 1 and 2, the foundation structure according to this embodiment has a concrete foundation beam A in which a leg portion Aa is formed at least at an end portion, and a column B is integrally attached to the leg portion Aa. Has been. Here, the concrete foundation beam A is set corresponding to the linear portion of the foundation, and in FIG. 1, the columns B are arranged at both ends and the middle of each concrete foundation beam A. Yes. Therefore, the concrete foundation beam A in each direction shares the column B arranged at the intersecting portion. In particular, the column B is disposed immediately below all the columns C constituting the housing of the house, and therefore the leg portions Aa are also formed corresponding to the positions of all the columns C.
[0023]
A concrete foundation beam A is installed for each foundation street (outside of the outer periphery of the foundation, outer street in the shape of a letter in Fig. 1, inside street in the outer street, middle street in the cross in Fig. 1), In the part contact | abutted with the concrete foundation beam A installed in the other street, it connects with each other. In particular, the concrete foundation beam A has an optimum width dimension to counteract forces such as the earth bearing strength of the ground for constructing the house, the weight of the house, and the horizontal force assumed to act on the house. Further, the concrete foundation beam A has a height dimension capable of realizing a cross-sectional shape that does not cause a strain exceeding a preset allowable strain range.
[0024]
For this reason, the concrete foundation beam A is formed to have a square shape including a square and a rectangular cross section. In the concrete foundation beam A having such a cross-sectional shape, the shape of the formwork when placing concrete becomes simple after construction at the site is completed, and construction is easy. In addition, the concrete foundation beam A is restricted to a depth at which the ground should be excavated deeper than the solid foundation. That is, in the concrete foundation beam A, it is essential that the height dimension is a value larger than the above-mentioned regulation value, and sufficient rigidity is exerted against the force that is assumed to act in the vertical direction and the horizontal direction. It is possible to easily set a possible shape. For this reason, there is an advantage that it is not necessary to provide a solid foundation.
[0025]
The concrete foundation beam A has legs Aa at least at the ends. The shape of the leg Aa is not particularly limited, and may be the same shape as other parts (parts to which the column B is not attached) in the concrete foundation beam A. In short, the leg portion Aa is a portion to which the column B is attached integrally.
[0026]
Although it is essential that the concrete foundation beam A is integrally attached to at least one column B at the end, the number of columns B is not limited. As shown in FIG. 1, the concrete foundation beam A for each street may have four columns B attached thereto. Thus, the number of columns B attached to the concrete foundation beam A differs depending on the target house and cannot be set uniquely.
[0027]
Here, when the target house is a steel two-story building and an ALC (lightweight cellular concrete) panel is used as the outer wall panel 5, the foundation structure of this embodiment uses the concrete foundation beam A, so The embedding depth of concrete foundation beam A is 27cm by regulation. Accordingly, excavation is carried out to the depth or more along the installation site of the concrete foundation beam A, and the excavation site is set to a depth of 27 cm by applying a predetermined ground work. However, the height of the concrete foundation beam A is not limited to this dimension, but it should be set according to the ground conditions, the weight of the building, the assumed horizontal force and the like.
[0028]
In the concrete foundation beam A in this embodiment, the height (beam formation) is set to 30 cm. For this reason, the top level of the concrete foundation beam A is set to be 3 cm higher than the ground level (GL).
[0029]
The column B is arranged immediately below all the columns C constituting the housing of the target house, and is connected to the column C and has a function of transmitting vertical force and horizontal force acting on the column C to the concrete foundation beam A.
[0030]
For this reason, as shown in FIG. 3, the column B has a top plate 1 for attaching the column C, and the upper end is fixed to the top plate 1 by means of welding or the like, and the force acting on the top plate 1 is applied to the concrete foundation beam A. And a transmission member 2 for transmitting to the head. Further, in order to prevent the column B from being pulled out of the concrete foundation beam A by the pulling force acting on the column B along with the horizontal force acting on the column C, the lower end of the transmission member 2 constituting the column B is The pull-out prevention member 3 is disposed and both are connected directly or integrally through the connection plate 4.
[0031]
In addition to the function of connecting the column C, the column B is disposed between the adjacent columns B, and is attached with a receiving beam 7 that supports the outer wall panel 5 and the floor panel 6, and a base beam 8 corresponding to the entrance and the piloti garage. It also has a function.
[0032]
For this reason, the top level of the top plate 1 constituting the column B is set in accordance with conditions such as a floor level and a floor structure set in advance for the target house. In particular, it is preferable that the top level of the top plate 1 to which the column C is attached and the top level of the receiving beam 7 that supports the bottom surface of the floor panel 6 coincide with each other. In addition, the height of the floor surface set from GL is a design problem according to each house and should not be limited.
[0033]
In this embodiment, the top level of the top plate 1 and the receiving beam 7 is set to GL + 40 cm regardless of the level of the floor surface. This numerical value is generally used for constituting a normal floor and ensuring ventilation under the floor.
[0034]
For this reason, a dimensional difference of 37 cm occurs between the top end of the top plate 1 and the receiving beam 7 and the top end of the concrete foundation beam A, and a gap is formed by subtracting the height of the receiving beam 7. That is, if the height of the receiving beam 7 is 100 mm, a 27 cm gap will be formed between the lower end of the receiving beam 7 and the top end of the concrete foundation beam A. Workers can pass easily.
[0035]
In the column B having the above function, the top plate 1 is formed with a bolt hole 1a for inserting a bolt (not shown) used when the column C is attached.
[0036]
The transmission member 2 has a cross-shaped cross section and a sufficient cross-sectional area so that it can sufficiently counter the horizontal force that is supposed to act, and each piece formed in a cross shape. A plurality of holes 2a are formed at predetermined intervals. And the receiving beam 7 which supports the outer wall panel 5 and the floor panel 6, and the base beam 8 corresponding to an entrance part and a piloti garage are connected through the hole 2a.
[0037]
The receiving beam 7 and the base beam 8 have different top end levels. For this reason, by forming a plurality of holes 2a in the piece of the transmission member 2 in advance, it is possible to select and use the optimum hole 2a according to the top level set for each beam 7,8. It is.
[0038]
The pull-out prevention member 3 is attached to the transmission member 2 and has a function of transmitting a pull-out force acting on the support column B to the concrete foundation beam A, and a part thereof is locked to the concrete foundation beam A. It has a structure like this.
[0039]
Locking of the pull-out prevention member 3 with respect to the concrete foundation beam A means a state in which the pull-direction prevention member 3 is embedded and integrated in the concrete foundation beam A (first embodiment described later), and the upper part of the concrete foundation beam A. There are anchor bolts embedded in the concrete foundation beam A in a state of being mounted on the concrete foundation A (second embodiment described later), or an anchor nut that is fastened and integrated, and these structures act on the column B It is possible to select and configure as appropriate according to the force.
[0040]
For example, in the column B shown in FIG. 3A, the pull-out prevention member 3 is made of H-shaped steel that is sufficiently longer than the cross-sectional dimension of the transmission member 2, and between the pull-out prevention member 3 and the transmission member 2. It is attached integrally with the column B via the arranged connection plate 4. That is, the connection plate 4 is welded to the lower end of the transmission member 2, and the connection plate 4 and the pull-out preventing member 3 are integrally attached using welding or bolts and nuts.
[0041]
Further, in the column B shown in FIG. 2B, the pull-out prevention member 3 is constituted by a flat plate having a dimension sufficiently larger than the plane dimension of the transmission member 2, and this pull-out prevention member 3 is connected to the lower end of the transmission member 2. It is attached integrally by welding to the part.
[0042]
Furthermore, in the column B shown in FIG. 3C, the pull-out prevention member 3 is composed of a plurality of flat plates having substantially the same dimensions as the top plate 1, and these flat plates are used as the lower end portion and the lower end portion of the transmission member 2. It is attached integrally by welding at a position spaced apart by a predetermined distance upward.
[0043]
As described above, the shape and structure of the support column B and the pull-out prevention member 3 are not particularly limited, depending on the arrangement position on the foundation, the weight of the house, the acting vertical force and horizontal force, and the like. It is possible to set appropriately. In particular, as shown in FIG. 1, the pull-out prevention member 3 attached to the column B disposed at the corner is formed in an L shape in plan view corresponding to each concrete foundation beam A.
[0044]
In the foundation structure, the vertical force acting on the column C transmitted to the support B is supported by the concrete foundation beam A. At this time, since the concrete foundation beam A has a width dimension necessary for transmitting the force and the height is constant over the entire width, the vertical force is evenly transmitted to the ground and supported. That is, the reaction force acting on the concrete foundation beam A is equal. For this reason, even if a compressive force acts on the concrete foundation beam A by acting on the normal force, it is possible to stably support this force, and the concrete foundation beam A is not partially broken.
[0045]
Further, when a force in the direction of pulling out the column B from the concrete foundation beam A due to the horizontal force acting on the column C is applied to the column B, either directly or via the connection plate 4 to the transmission member 2 constituting the column B. Since the pull-out prevention member 3 attached in this manner is integrally attached to the concrete foundation beam A, it can be countered by the shear strength or tensile strength of the pull-out prevention member 3, and the column B is made from the concrete foundation beam A. It will not be pulled out or fall down.
[0046]
Next, with reference to FIGS. 1 to 5, the foundation structure according to the first embodiment, in particular, the structure of reinforcing bars embedded in the concrete foundation beam A and the tight structure between the receiving beam 7 and the concrete foundation beam A will be described in detail. In addition, the construction procedure will be described. When building a foundation, first, the target house is designed. Therefore, in the following description, it is assumed that the design of the house has already been completed, the positions of the pillars, the entrances, etc. have been determined, and the site work and positioning have also been completed according to the basic plan.
[0047]
In the present embodiment, a plurality of columns B arranged immediately below the columns C constituting the frame are embedded in the leg portions Aa of the concrete foundation beam A.
[0048]
First, the column B is arranged in correspondence with the installation position of the column C constituting the housing of the house. At this time, a leveling PC plate 9 is installed for each column B, and the column B is raised and arranged on each PC plate 9. At this time, the pull-out preventing member 3 is integrally attached to each column B on the lower end side of the transmission member 2. The PC plate 9 is embedded in the concrete foundation beam A together with the column B. For this reason, the height of the column B including the pull-out preventing member 3 is set to a dimension obtained by subtracting the thickness of the PC plate 9 from the value obtained by adding the height of the top end of the top plate 1 and the height of the concrete foundation beam A. The
[0049]
After the arrangement of all the columns B is completed, the top ends of all the columns B are set to the same level while adjusting the height of the top plate 1 of each column B. In this state, each column B is temporarily fixed by fastening a nut to a bolt (not shown) embedded in the PC plate 9.
[0050]
Subsequently, the reinforcing bar 10 is arranged corresponding to the installation site of the concrete foundation beam A. The reinforcing bar 10 is assembled in advance at the factory stage, or is used by three-dimensionally assembling flat net-like reinforcing bars previously manufactured at the factory stage. The reinforcing bar 10 is composed of a plurality of vertical bars 10a arranged in the longitudinal direction and band bars (shear reinforcing bars) 10b that join these vertical bars 10a.
[0051]
The width and height of the reinforcing bar 10 are set in accordance with the preset cross-sectional dimensions of the concrete foundation beam A, and the length is determined regardless of the length of the concrete foundation beam A. It is set according to the distance between the adjacent support | pillars B arrange | positioned by. That is, when the reinforcing bar 10 is disposed between the adjacent columns B, the reinforcing bar 10 does not reach both ends of the column B, and maintains a position separated from the column B by a predetermined distance.
[0052]
In general, the interval between the pillars C is regulated by the module size set for the house. For this reason, the length of the reinforcing bar 10 is also restricted by the module dimensions, and can be standardized. Therefore, it is possible to manufacture the reinforcing bar 10 at the factory stage, and it is possible to make the reinforcing bar 10 with stable quality and high reliability. This also increases the reliability of the concrete foundation beam A constructed using the reinforcing bar 10.
[0053]
When the reinforcing bar 10 is arranged between the columns B, the end of the arranged reinforcing bar 10 is located away from the column B. For this reason, it is necessary to join the reinforcing bar rods 10 arranged in the linear direction or the L-shaped direction with the support B as the center, respectively. This joining is performed by joining the longitudinal bars 10a of the reinforcing bar 10 with the plurality of longitudinal bars 11 arranged so as to sandwich the column B and joining the longitudinal bars 11 with the band 12.
[0054]
In the present embodiment, when the reinforcing bar 10 is joined by the vertical bars 11, the vertical bars 11 are not fixed to the support B, and the vertical bars 11 and the support B are in an insulated state. However, the present invention is not limited to this configuration, and the vertical bars 11 may be fixed to the column B or a part of the pull-out preventing member 3 by means such as welding.
[0055]
As described above, it is possible to install and arrange the support B. Here, as described above, the operation of setting the level of the top plate 1 of the support column B is not necessarily performed before the bar arrangement work is performed, and may be performed after the bar arrangement work is performed. It is.
[0056]
FIG. 4 explains the relationship between the columns B, the reinforcing bar 10 and the concrete foundation beam A arranged in the middle street and the outer street as described above.
[0057]
The figure (a) shows the relationship between the column B arranged on the middle concrete foundation beam A and the reinforcing bar 10, and the column B is arranged at the center in the width direction and the concrete is based on the column B. The vertical bars 10a of the reinforcing bar 10 are distributed in the width direction of the foundation beam A. FIG. 6C shows the same configuration as that shown in FIG.
[0058]
The figure (b) shows the relationship between the column B arranged on the concrete foundation beam A on the outer street and the reinforcing bar 10, and the column B is arranged at a position biased to the outside of the concrete foundation beam A. The reinforcing bar 10 is arranged at the approximate center of the concrete foundation beam A.
[0059]
In particular, it is preferable to connect the receiving beam 7 and the base beam 8 to the column B after placing all the columns B and before placing the concrete for constructing the concrete foundation beam A. By connecting the receiving beam 7 and the base beam 8 to the column B in advance, it is possible to ensure the stability of each column B.
[0060]
The receiving beam 7 has a function of supporting the outer wall panel 5 and the floor panel 6 when arranged on the outer street, and has a function of supporting the floor panel 6 when arranged on the middle street. For this reason, the receiving beam 7 is made of H-shaped steel having a dimension that can sufficiently withstand the weight of the outer wall panel 5 and the floor panel 6 to be supported.
[0061]
Further, the receiving beam 7 and the base beam 8 are connected by abutting each web and the piece of the transmission member 2 of the column B and fastening the plate 13 with bolts and nuts 14.
[0062]
The receiving beam 7 supports the floor panel 6, and the end portions of the plurality of floor panels 6 are placed on the receiving beam 7, so that the load of each floor panel 6 acts on the receiving beam 7 and bending occurs. For this reason, it is preferable to connect to the concrete foundation beam A at a substantially central position in the longitudinal direction of the receiving beam 7 or at a plurality of positions in the longitudinal direction and to support the receiving beam 7 by the concrete foundation beam A.
[0063]
In this embodiment, as shown in FIG. 2, a receiving beam support member 15 is arranged substantially at the center of the receiving beam 7, and the top end of the concrete foundation beam A and the lower end of the receiving beam 7 are connected by this receiving beam support member 15. Thus, the load acting on the receiving beam 7 can be transmitted to and supported by the concrete foundation beam A.
[0064]
The receiving beam support member 15 needs to have strength that can resist the force acting on the mounting portion with respect to the receiving beam 7 and bending strength and bending rigidity that can resist horizontal force transmitted through the receiving beam 7. The shape is not limited as long as the strength can be exhibited.
[0065]
For this reason, the receiving beam support member 15 of the present embodiment has a length corresponding to the size of the gap formed between the lower end of the receiving beam 7 and the top end of the concrete foundation beam A, and has both ends in the longitudinal direction. The main body has a U-shaped side view in which the flange 15a is formed, and the flange 15a is connected by a stiffener 15b.
[0066]
The receiving beam support member 15 is fixed to the lower flange of the receiving beam 7 in advance by bolts, nuts 14 or by welding, and embedded bolts 16 embedded in the concrete foundation beam A in advance on the lower flange 15a serving as a free end. Is attached.
[0067]
As described above, the strut B is arranged immediately below the pillar C constituting the housing of the house to adjust the top end level, and the reinforcing bar rods 10 are arranged between the adjacent struts B, respectively. After the rods are connected by the vertical bars 11 and the strips 12, the receiving beam 7 and the base beam 8 are arranged between the adjacent columns B and connected by the plate 13, and then the concrete beam A is made to correspond to the installation position of the concrete foundation beam A. Then, a formwork (not shown) is placed, and concrete is placed on the formwork.
[0068]
By placing concrete on the formwork, the embedded bolts 16 attached to the lower flange 15a of the column B including the pull-out prevention member 3, the PC plate 9, the reinforcing bar 10, and the receiving beam support member 15 are attached to the concrete foundation beam A. Buried inside. The concrete placed in the mold is demolded after a predetermined curing period, thereby forming a concrete foundation beam A in which the respective members are embedded and integrated.
[0069]
When the concrete foundation beam A is composed of cast-in-place concrete as described above, the top end level of each column B maintains a preset accuracy, and the column C is attached without performing leveling again. Is possible. Similarly, the accuracy of the level of the receiving beam 7 is guaranteed, and it is possible to attach the outer wall panel 5 and the floor panel 7 subsequent to the attachment of the column C.
[0070]
In the above configuration, the upper part of the column B protrudes from the top end of the concrete foundation beam A, and the entire receiving beam 7 is exposed, and there is a large gap between the receiving beam 7 and the top end of the concrete foundation beam A. As described above, it is possible for an operator to easily pass when performing maintenance inspection of equipment and piping installed under the floor or maintenance inspection of a building.
[0071]
However, it is not preferable to keep the under floor always open as a house. For this reason, when attaching the outer wall panel 5 to the receiving beam 7, the decorative panel 16 and the corner panel 17 (refer FIG. 1) are attached.
[0072]
When the gap formed by the receiving beam 7 and the concrete foundation beam A is closed by the decorative panel 16 and the corner panel 17, the structure for attaching the panels 16 and 17 is not particularly limited. For example, when the decorative panel 16 is attached to the column B, as shown in FIG. 5, a bracket 18 is attached to the hole 2a formed in the piece of the transmission member 2 of the column B with bolts and nuts 14 and Can be attached. Similarly, the corner panel 17 can be attached to the column B.
[0073]
Further, since the decorative panel 16 is lightweight, it is not always necessary to attach the decorative panel 16 directly to the support column B. A stay (not shown) is attached to the web of the receiving beam 7 or the lower flange, and the decorative panel 16 is attached by this stay. It is also possible to do.
[0074]
In particular, when a part of the decorative panel 16 is configured to be removable from the outside for maintenance inspection under the floor, a stay is attached to the receiving beam 7 as described above, and a bolt is externally attached to the stay. It is possible to configure so that the decorative panel can be attached and detached by fastening.
[0075]
In the first embodiment described above, the support column B including the pull-out preventing member 3 is embedded in the concrete foundation beam A made of cast-in-place concrete, but the support column B is not necessarily embedded in the concrete foundation beam A. .
[0076]
Next, the configuration of the second embodiment in which the column B is mounted on and integrated with the top end of the concrete foundation beam A will be described with reference to FIG. In the figure, the same parts as those in the first embodiment and the parts having the same functions are denoted by the same reference numerals and the description thereof is omitted.
[0077]
In the figure, a base plate 20 is arranged in advance in the lower part of the concrete foundation beam A at a portion where the column B is attached to the concrete foundation beam A, and one end is attached to the base plate 20 and the other end is the concrete foundation beam. An anchor bolt 21 that protrudes through A in the height direction is embedded. And the support | pillar B is attached to the concrete foundation beam A integrally by fastening the plate-shaped drawing | pull-out prevention member 3 welded to the transmission member 2 of the support | pillar B to the anchor bolt 21. FIG.
[0078]
Therefore, even when vertical force or horizontal force is applied to the column B, these forces are transmitted to and supported by the concrete foundation beam A via the anchor bolt 21 and the base plate 20, and the concrete foundation is supported by these forces. The beam A is not broken, and the column B is not pulled out or falls down.
[0079]
The present embodiment is not a structure in which the column B is embedded in the concrete foundation beam A. For this reason, the reinforcing bar embedded in the concrete foundation beam A does not necessarily need to be the reinforcing bar 10 in the first embodiment, and may be configured by arranging the bars on site in the same manner as ordinary on-site concrete.
[0080]
Moreover, in the concrete foundation beam A made of cast-in-place concrete, the accuracy at the top level is low. For this reason, when attaching the support | pillar B, leveling out for every support | pillar B becomes essential. In this case, for example, a wooden frame substantially equal to the dimension of the pull-out prevention member 3 attached to each column B is formed, the column B is inserted into the anchor bolt 21 and the frame is arranged around the column B and the concrete foundation beam A. It is possible to maintain the mounting level by leveling the support B and filling the wooden frame with non-shrinkable mortar. Moreover, without limiting to this method, it is possible to level each strut B and attach it to the concrete foundation beam A by using a known technique.
[0081]
【The invention's effect】
As described above in detail, in the foundation structure according to the present invention, after attaching a pillar constituting the building frame to the pillar, a compressive force or a pulling force is applied to the pillar along with a vertical force or a horizontal force acting on the pillar. When acting, these forces can be transmitted to and supported by the concrete foundation beam via the support column, and the support column will not fall over or break down the concrete foundation beam.
[0082]
In addition, since the foundation can be constructed by integrally attaching the pillar supporting the pillar to the concrete foundation beam, the top level of the lightweight pillar is extremely small compared to the pillar constituting the frame. By adjusting, the level as a basis can be obtained and the work becomes easy. In particular, it is possible to set the position of the column and level the column without attaching the column directly to the concrete foundation beam.
[0083]
In addition, the concrete foundation beam has a width dimension and a height dimension according to conditions such as the ground strength of the ground, the weight of the building, and the horizontal force assumed to act on the building. For this reason, the cross section of the concrete foundation beam becomes a square including a square and a rectangle, and it becomes possible to increase the amount of reinforcing bars to be embedded, and accordingly, the proof stress can be increased. For this reason, even if it is used for a long period of time, cracks do not occur, and it is advantageous when applied to a long-life house whose useful life is set to 50 years or more.
[0084]
Moreover, the support | pillar is protruded and installed from the top end of the concrete foundation beam, and a gap is formed between the top end of the concrete foundation beam and the upper end of the support post. For this reason, it becomes possible to enter the underfloor space through the gap, and the maintenance inspection under the floor becomes easy. In addition, since it is not a solid foundation structure, the depth under the floor is not regulated by concrete, and there is no need to study the storage when installing the underfloor storage or the elevator.
[0085]
Furthermore, there are the following advantages compared with the case of using steel foundation beams. That is, since it is not necessary to integrate the steel beam and the concrete, an operation relating to an operation of connecting a reinforcing bar to the steel beam is unnecessary, and the construction is simplified. Moreover, there is no need to embed steel beams in the concrete, and no treatment for ensuring the durability of the steel is required. Since the steel beam is not moved, a heavy machine is not required, the cost for this can be reduced, and the amount of iron required for the steel beam can be reduced to reduce the cost.
[Brief description of the drawings]
FIG. 1 is a perspective view for explaining the overall structure of a foundation structure.
FIG. 2 is a diagram for explaining a relationship between a foundation structure and a part of a building formed on an upper portion of the foundation.
FIG. 3 is a diagram illustrating an example of a support column.
FIG. 4 is a diagram illustrating a structure in which a support and a concrete foundation beam are integrated.
FIG. 5 is a diagram illustrating a configuration for making up a space between a lower portion of an outer wall and a concrete foundation beam.
FIG. 6 is a diagram for explaining another example of a structure in which a support and a concrete foundation beam are integrated.
[Explanation of symbols]
A Concrete foundation beam
Aa Leg
B prop
C pillar
1 Top plate
1a, 2a hole
2 Transmission member
3 Pull-out prevention member
4 connection board
5 exterior wall panels
6 Floor panel
7 Receiving beam
8 Ground beam
9 PC board
10 Reinforcing bar
10a, 11 longitudinal muscle
10b, 12 bands
13 plates
14 Bolts and nuts
15 Beam support member
15a flange
15b stiffener
16 Decorative panel
17 Corner panel
18 Bracket
20 Base plate
21 Anchor bolt

Claims (5)

Legs for mounting the supports for housing pillars at least an end portion of the concrete foundation beams are al provided,
The concrete foundation beam is preset with an optimum width dimension to counteract forces such as ground strength of the ground for constructing the house, weight of the house and horizontal force assumed to act on the house. A rectangular cross section having a height dimension capable of realizing a cross sectional shape that does not cause distortion exceeding the allowable strain range, and the top end level of the concrete foundation beam is set higher than the ground level. Has been
The column is
A top plate for attaching the pillar;
A transmission member for receiving a pulling force acting on the top plate by fixing the upper end to the top plate;
And a withdrawal preventing member for transmitting the pulling force acting on the transmission member is disposed at the lower end of said transmission member to the leg portion of the concrete foundation beam,
The withdrawal preventing member is embedded in at least the leg portion of the concrete foundation beam has a large listening dimension than the planar dimension of the transmission member, the transmission member and the top plate rather than the crest level of the concrete foundation beam A basic structure of a house characterized by being located and exposed above . Legs for mounting the supports for housing pillars at least an end portion of the concrete foundation beams are al provided,
The concrete foundation beam is preset with an optimum width dimension to counteract forces such as ground strength of the ground for constructing the house, weight of the house and horizontal force assumed to act on the house. A rectangular cross section having a height dimension capable of realizing a cross sectional shape that does not cause distortion exceeding the allowable strain range, and the top end level of the concrete foundation beam is set higher than the ground level. Has been
The column is
A top plate for attaching the pillar;
A transmission member for receiving a pulling force acting on the top plate by fixing the upper end to the top plate;
And a withdrawal preventing member for transmitting the pulling force acting on the transmission member is disposed at the lower end of said transmission member to the leg portion of the concrete foundation beam,
The pull-out preventing member is composed of a plurality of flat plates having substantially the same dimensions as the top plate, and these flat plates are attached at positions spaced apart from the lower end and the lower end of the transmission member by a predetermined dimension. A house formed and embedded in a leg portion of the concrete foundation beam , wherein the transmission member and the top plate are exposed above the top level of the concrete foundation beam. Foundation structure.   The said pull-out preventing member is embedded in the leg portion of the concrete foundation in a state of being surrounded by a reinforcing bar that constitutes the leg portion of the concrete foundation beam. The basic structure of the house.   The foundation of a house according to any one of claims 1 to 3, wherein the pull-out preventing member is supported by a PC board, and the PC board is also embedded in a leg portion of the concrete foundation. Construction. Legs for mounting the supports for housing pillars at least an end portion of the concrete foundation beams are al provided,
The concrete foundation beam is preset with an optimum width dimension to counteract forces such as ground strength of the ground for constructing the house, weight of the house and horizontal force assumed to act on the house. A rectangular cross section having a height dimension capable of realizing a cross sectional shape that does not cause distortion exceeding the allowable strain range, and the top end level of the concrete foundation beam is set higher than the ground level. Has been
The column is
A top plate for attaching the pillar,
A transmission member for receiving a force acting on the top plate with its upper end fixed to the top plate;
And a withdrawal prevention member for transmitting are placed on the leg while being positioned at the lower end of said transmission member the force acting on the transmission member to the leg portion of the concrete foundation beam,
The base of the concrete foundation has a base plate disposed at a lower portion serving as a lower end, an anchor bolt having one end attached to the base plate and the other end projecting through the concrete foundation beam in the height direction. The pull-out prevention member is fastened to the anchor bolt ,
The foundation structure of a house, wherein the transmission member and the top plate are exposed above the top end level of the concrete foundation beam .

Images