JP4283825B2 - Standing foundation material for under wall - Google Patents

Description

  The present invention relates to a rising base material for a lower wall and an under-wall structure using the rising base material.

Generally, when forming a wall member of a building, a base material called a foundation material is generated on the concrete ground, and a wall member (for example, pre-made in a factory and brought to the building site) (For example, Patent Documents 1 and 2)
JP-A-2005-76426 JP 2006-104675 A

  Conventionally, most of the rising foundation materials used are made of concrete.

  That is, using a metal formwork or a wooden formwork, concrete was poured into the foundation portion simultaneously with the floor concrete, and after the concrete hardened, the formwork was removed and a rising foundation material was produced.

  Although such a concrete rising foundation material has the advantage that it can be produced in a short time, it takes time and effort to set the formwork in place, and the strength is not so great Had.

  The present invention has been made in view of the problems in the conventional rising base material, and can be installed with less effort than the conventional rising base material, and is larger than the conventional rising base material. An object of the present invention is to provide a rising base material having strength and a sub-wall structure using the same.

  Hereinafter, means for solving the above-described problems will be described using reference numerals used in the “Embodiments of the Invention”. These reference signs are added only to clarify the correspondence between the description of the “claims” and the description of the “embodiments of the invention”. It should not be used to interpret the technical scope of the invention described in.

In order to achieve the above object, the present invention has at least one of an upper surface (101) and a lower surface (102) parallel to each other and penetrating in the thickness direction from the upper surface (101) to the lower surface (102). A fixing member (130) for fixing the rising base material (100) in which two through holes (103, 104) are formed to the ground, and is in contact with the upper surface (101) of the rising base material (100) A pair of flange surfaces (131), a pair of vertical surfaces (132) extending vertically downward from each of the pair of flange surfaces (131), and a horizontal connected to the pair of vertical surfaces (132) at both ends. a central surface (133), consists of the pair of vertical surfaces (132) is capable of fitting in the through-hole (103, 104), the direction of the through hole (103, 104) extends Definitive the pair of vertical surfaces the length of the (132) is smaller than the depth of the through hole (103, 104), said central plane (133) to the fixing member through hole (134) is formed (130 )I will provide a.

Further, the present invention has at least one through hole (103, 103) having an upper surface (101) and a lower surface (102) parallel to each other and penetrating in a thickness direction from the upper surface (101) to the lower surface (102). 104), the reinforcing base material (100) in which the reinforcing bars are arranged in a mesh shape, and the rising basic material (100) through the through holes (103, 104). The fixing member ( 130 ) for fixing to the ground, and a lower wall structure, wherein the reinforcing bar structure (200) is disposed above the ground, and the rising foundation material (100) is An under-wall structure is provided that is disposed on a reinforcing bar structure (200) and is fixed to the ground via the fixing member ( 130 ).

  Since the rising base material according to the present invention can be manufactured in advance in a factory, it can be brought into a construction site and installed immediately. The rising base material according to the present invention does not need to be manufactured at the construction site like a conventional rising base material, and can be installed in a short time with less effort than the conventional rising base material.

  In addition, the conventional rising foundation material is heavy because it is made of concrete, but the rising foundation material according to the present invention is only about 60% in weight compared to the conventional rising foundation material made of concrete. (As will be described later, while the rising base material made of concrete is 20 kg, the rising base material according to the present invention having the same shape is 11.7 kg), it can be handled easily.

  In terms of strength, the rising foundation material according to the present invention is higher in strength than the conventional concrete rising foundation material.

  Furthermore, the conventional concrete rising foundation material was almost impossible to process once manufactured, but the rising foundation material according to the present invention is mainly composed of bottom ash. It is possible to cut with a cutter, and it is possible to easily change the shape or make a hole in a necessary place at a construction site.

  FIG. 1A is a plan view of a rising base material 100 according to an embodiment of the present invention, FIG. 1B is a front view of the rising base material 100, and FIG. 1C is a side view of the rising base material 100. is there.

  FIG. 2 is a perspective view of the rising base material 100 according to the present embodiment.

  The rising base material 100 according to the present embodiment has a rectangular parallelepiped shape as a whole.

  The rising base material 100 is formed with two through holes 103 and 104 that penetrate the thickness direction from the upper surface 101 to the lower surface 102.

  Each of the through holes 103 and 104 is formed as a long hole extending in the length direction A of the rising base material 100. Each of the through holes 103 and 104 is in a symmetrical position with respect to the center of the rising base material 100.

  Further, U-shaped grooves 105 extending in the thickness direction are formed at both ends in the length direction A of the rising base material 100.

  The rising base material 100 can be manufactured in advance in a factory, for example, and what is manufactured in the factory can be brought into a building site.

  The rising base material 100 is made of, for example, concrete having a bottom ash generated from a thermal power plant as an aggregate.

  There are two types of ash generated from the thermal power plant, fly ash and bottom ash, and the rising foundation material 100 according to this embodiment is made using bottom ash.

  The bottom ash is generated by mutually condensing coal ash remaining after combustion of fuel coal in a thermal power plant.

  Fly ash is reused as a mixed material of cement, for example.

  In contrast, bottom ash has been used only as a soil improvement material or a landfill material until now, but as a result of the inventor's research, washing (for example, washing with water) and particle size selection are performed. According to the present invention, it was found that it can be used as a substitute for a concrete aggregate (a concrete pile is currently used as a natural aggregate). Has been made.

The characteristics of bottom ash are listed below.
(1) Specific gravity 1.9 to 2.3 (about 2/3 of cement)
(2) Density 620 to 697 kg / m ³ (For example, when sand is selected as a comparison target, the density of sand is about 2500 kg / m ³ )
(3) Constituent substances (unit:% by weight)
SiO ₂ 58.11
Al ₂ O ₃ 23.58
Fe ₂ O ₃ 5.65
CaO 4.31
MgO 1.11.
K ₂ O 1.10.
Na ₂ O 0.51
TiO ₂ 1.30
Other 4.33
(4) Heavy metals (Cu, Cr, Cd, Pb) Not detected (5) Residual salt content 1/1000 PPM or less (6) pH 9.0 to 9.5
An example of the constituent material of the rising base material 100 according to the present embodiment and the amount used (unit: kg / m ³ ) is given below.
(1) Water 120
(2) Cement 400
(3) Stone powder (granite) 428
(4) Bottom ash (particle size less than 5 mm) 877
(5) Bottom ash (particle size 5 mm or more) 139
(Total mass: 1964 kg / m ³ )
An example of a method for manufacturing the rising base material 100 according to the present embodiment will be described below.

  A mold is used when the rising base material 100 is manufactured.

  First, the raw materials (1) to (5) are kneaded with a slump of 0 cm.

  Next, the kneaded raw material is press-molded while applying strong vibration.

  After that, steam curing is performed. The steam curing time is, for example, 10 hours.

An example of the dimensions of the rising base material 100 according to this embodiment is shown below.
(1) Width: 110mm
(2) Length: 900mm
(3) Height: 90mm
The weight per rising base material 100 is about 11.7 kg. In addition, if the rising foundation material of the same shape and the same dimension is manufactured with concrete, the weight per piece will be 20 kg.

  A four-week compressive strength test was performed on the rising base material 100 according to the present embodiment having the above-described structure at a third-party inspection organization.

The test conditions are as follows.
(1) Test purpose: Confirmation of design standard strength (24 N / mm ² ) (2) Strength management method: normal method (3) Specimen sampling method: JIS A1115
(4) Strength management of specimens Age: 28 days (5) Curing method of specimens: Air curing (6) Number of specimens: 3
(7) Test method: JIS A1108 “Compression strength test method for concrete”
When a 4-week compressive strength test was performed on the three specimens, the resulting compressive strength was as follows.
(1) 29.3 N / mm ²
(2) 32.2 N / mm ²
(3) 29.7 N / mm ²
Accordingly, the average compressive strength is as follows.

(29.3 + 32.3 + 29.7) /3=30.4 N / mm ²
The average compressive strength (30.4N / mm ²⁾ was confirmed to be significantly higher than the design strength (24N / mm ^2).

  The rising base material preferably has a large surface roughness in order to increase the frictional force with the wall material installed thereon. For example, it is possible to increase the surface roughness of the rising foundation material 100 by mixing sand or fly ash into stone powder (granite) which is one of the constituent materials of the rising foundation material 100 according to the present embodiment. .

  As described above, since the rising base material 100 according to the present embodiment can be manufactured in advance in a factory, it can be brought into a construction site and installed immediately. The rising base material 100 according to the present embodiment does not need to be manufactured over time at a construction site like a conventional rising base material, and can be installed in a short time with less effort than a conventional rising base material. .

  Further, the conventional rising foundation material is heavy because it is made of concrete, but the rising foundation material 100 according to this embodiment is only about 60% in weight compared to the conventional rising foundation material made of concrete. Since there is no concrete (as mentioned above, the rising base material made of concrete is 20 kg, the rising base material 100 according to this embodiment having the same shape is 11.7 kg), it can be handled easily.

  In terms of strength, the rising foundation material 100 according to the present embodiment is higher in strength than the conventional concrete rising foundation material.

  Furthermore, although the conventional rising base material made of concrete was almost impossible to process once manufactured, the rising base material 100 according to the present embodiment can be cut with, for example, a high-speed cutter, In a construction site, it is possible to easily change the shape or make a hole in a required portion.

  FIG. 3 is a perspective view showing a first example of how to use the rising base material 100 according to the present embodiment.

  After the rising foundation material 100 according to the present embodiment is arranged on an installation surface (for example, a concrete surface or a steel plate), the fixing member 110 is passed through each of the through holes 103 and 104, and the rising foundation is interposed via the fixing member 110. The material 100 is fixed to the installation surface.

  FIG. 4 is a perspective view showing a first example of the fixing member 110.

  The fixing member 110 is fixed to the flat plate member 111 having a size sufficient for passing through the through holes 103 and 104 and the flat plate member 111 on the lower surface of the flat plate member 111 by, for example, welding. And a screw member 112.

  The screw member 112 may be fixed at the center position of the flat plate member 111 or may be fixed eccentrically at a position deviating from the center position of the flat plate member 111.

  After the flat plate member 111 is bridged over the through holes 103 and 104, the screw member 112 is fixed to the installation surface.

  Thereafter, the wall material 120 is disposed on the rising base material 100.

  FIG. 5 is a perspective view illustrating a state in which the fixing member 110 according to the second example is attached to the rising base material 100, and FIG. 6 is a perspective view illustrating the fixing member 110 according to the second example being attached to the rising base material 100. It is sectional drawing in a state.

  The fixing member 110 according to the second example includes a mounting bracket 130 and a bolt 140.

  The mounting bracket 130 is connected at both ends to the pair of flange surfaces 131 that contact the upper surface of the rising base material 100, the pair of vertical surfaces 132 that extend vertically downward from each of the pair of flange surfaces 131, and the pair of vertical surfaces 132. And a central surface 133.

  A through hole 135 is formed in the approximate center of each of the pair of flange surfaces 131.

  The interval between the pair of vertical surfaces 132 is set to be equal to the width of each through hole 103, 104, so that the pair of vertical surfaces 132 can be fitted into each through hole 103, 104. It has become.

  A through hole 134 through which the bolt 140 passes is formed at the center of the central surface 133.

  The rising base material 100 according to the present embodiment is fixed as follows using the fixing member 110 according to the second example.

  First, the pair of vertical surfaces 132 of the mounting bracket 130 are fitted into each of the through holes 103 and 104.

  Next, the bolt 140 is passed through the through hole 134 of the central surface 133.

  As shown in FIG. 6, an anchor 151 is formed in advance on the installation surface 150, and the rising base material 100 according to the present embodiment is fixed to the installation surface 150 by screwing the bolt 140 to the anchor 151. Is done.

  Alternatively, the fixing member 110 according to the first example shown in FIG. 4 and the fixing member 110 according to the second example shown in FIGS. 5 and 6 can be used in combination.

  FIG. 7 is a cross-sectional view showing a state in which the fixing member 110 according to the first example and the fixing member 110 according to the second example are used in combination.

  As shown in FIG. 7, the fixing member 110 according to the first example is raised and placed on the upper surface 101 of the base material 100, and the screw member 112 is passed through the through holes 103 and 104. In the fixing member 110 according to the second example, the pair of vertical surfaces 132 of the mounting bracket 130 are fitted into the through holes 103 and 104 from the lower surface 102 of the rising base material 100.

  After passing the screw member 112 of the fixing member 110 according to the first example through the through hole 134 formed in the central surface 133 of the fixing member 110 according to the second example, the screw member from below the central surface 133 A nut 136 is screwed onto 112. As in FIG. 6, the rising base material 100 is fixed to the installation surface 150 by screwing the tip of the screw member 112 to the anchor 151.

  FIG. 8 is a perspective view showing a second example of the usage method of the rising base material 100 according to the present embodiment.

  In the second example, the rising base material 100 according to the present embodiment constitutes a part of the under-wall structure.

  That is, the under-wall structure shown in FIG. 8 includes a rising foundation material 100 according to the present embodiment, a steel plate 200 that maintains the rising foundation material 100 at a predetermined height with respect to the ground (for example, a concrete surface), and a mesh shape. The reinforcing bar structure 210 includes a reinforcing bar structure 210 and a fixing member 110 that fixes the rising base material 100 to an installation surface (for example, a concrete surface) through the through holes 103 and 104.

  Each of the plurality of steel plates 200 has a predetermined member with respect to the ground (for example, a concrete surface) via a predetermined member 220 (for example, one that is used with the fixing member 110 illustrated in FIG. 4 turned upside down) 220. Maintained at height.

  A rising base material 100 is bridged between two steel plates 200 adjacent to each other, and the rising base material 100 is fixed to the ground via a fixing member 110.

  A reinforcing bar structure 210 is disposed below the steel plate 200, and the reinforcing bar structure 210 is attached to the lower surface of the steel plate 200 so as to be maintained at a predetermined height from the ground.

  After forming the under-wall structure having the above-described structure, concrete is struck so as to cover all the reinforcing bar structures 210. At this time, the through holes 103 and 104 of the rising base material 100 may be similarly filled with concrete.

  According to this second example, the base material 100 can be placed on the concrete surface at the same time as the concrete surface containing the reinforcing bars is formed.

  The rising base material 100 according to the present embodiment is not limited to the structure as described above, and various modifications can be made.

  For example, the shape of the rising base material 100 is not limited to a rectangular parallelepiped, and may be a triangle, a trapezoid, or other rectangular shapes as necessary. Alternatively, as long as it has an upper surface and a lower surface that are parallel to each other, it may have a curved shape such as a circle or an ellipse.

  Further, the number of through holes 103 and 104 is not limited to two. The number of through holes may be one, or three or more may be formed as necessary.

  Further, the shape of the through holes 103 and 104 is not limited to the long hole. Any shape of the through-hole may be used as long as the through-hole can be fixed to the ground via an arbitrary fixing member. However, by using the through holes 103 and 104 as long holes, the position of the fixing member 110 can be adjusted in the length direction of the rising base material 100 (that is, the long axis direction of the long holes).

1A is a plan view of a rising base material according to an embodiment of the present invention, FIG. 1B is a front view of the rising base material, and FIG. 1C is a side view of the rising base material. . It is a perspective view of the stand-up base material concerning one embodiment of the present invention. It is a perspective view which shows the 1st example of the usage method of the standup base material which concerns on one Embodiment of this invention. It is a perspective view which shows the 1st example of the member for fixation for fixing the standup base material which concerns on one Embodiment of this invention to the ground. It is a perspective view which shows the state which attached the member for fixation concerning a 2nd example to the standup base material which concerns on one Embodiment of this invention. It is sectional drawing in the state which attached the fixing member which concerns on a 2nd example to the standup base material which concerns on one Embodiment of this invention. It is sectional drawing in the state which attached the fixing member which concerns on a 1st example and a 2nd example to the standup base material which concerns on one Embodiment of this invention. It is a perspective view which shows the 2nd example of the usage method of the standup base material which concerns on one Embodiment of this invention.

Explanation of symbols

100 Upright Foundation Material 101 According to an Embodiment of the Present Invention Upper Surface 102 of Upright Foundation Material Lower Surface 103, 104 of Upright Foundation Material Through Hole 105 U-Shaped Groove 110 Fixing Member 111 Flat Member 112 Screw Member 120 Wall Material 130 Mounting bracket 140 Bolt 150 Installation surface 151 Anchor 200 Steel plate and 210 Reinforcing bar structure

Claims (2)

A fixing member for fixing a rising base material to the ground having an upper surface and a lower surface that are parallel to each other and in which at least one through hole penetrating the thickness direction from the upper surface to the lower surface is formed. ,
A pair of flange surfaces in contact with the upper surface of the rising base material; a pair of vertical surfaces extending vertically downward from each of the pair of flange surfaces; and a horizontal central surface connected at both ends to the pair of vertical surfaces. Consists of
The pair of vertical surfaces can be fitted into the through hole,
The length of the pair of vertical surfaces in the direction in which the through hole extends is smaller than the depth of the through hole,
A fixing member having a through hole formed in the central surface. A rising base material having an upper surface and a lower surface parallel to each other, wherein at least one through hole penetrating the thickness direction from the upper surface to the lower surface is formed;
A rebar structure with rebars arranged in a mesh,
The fixing member according to claim 1 , wherein the rising base material is fixed to the ground via the through hole;
A sub-wall structure consisting of
The reinforcing bar structure is disposed above the ground;
The standing base material is disposed on the reinforcing bar structure and is fixed to the ground via the fixing member.

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