JP2003193484A - Pc footing beam member, and method for constructing continuous footing or mat foundation using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To facilitate mounting of a longitudinal beam when a continuous footing is constructed by using a PC footing beam member and a PC base plate, to thereby facilitate mounting of longitudinal reinforcements in the beam member. <P>SOLUTION: The PC footing beam member 1 is formed of two rectangular side walls 11 and two partition walls 13 longitudinally connecting the side walls to each other, and an upper V-shaped groove 16 is formed in an upper bed of the partition wall 13, whereby the reinforcement is arranged in the V-shaped groove 16. Then, the frame-like PC base plate 2 has a horizontal recess 26 at its lateral center, in which the PC footing beam member 1 is mounted, and a lower V-shaped groove 27 is formed at the center of the horizontal recess 26, for arranging the reinforcement therein. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a precast concrete (hereinafter abbreviated as PC) foundation beam member produced by a factory, and a method for constructing a cloth foundation or a solid foundation for a building such as a house or an office using the same. .

[0002]

2. Description of the Related Art In recent years, PC foundation plates and P made by factory production have been used for the foundation of cloth foundation structures of buildings such as houses and offices.
C Foundation beams such as cloth foundations or solid foundations have been widely adopted by using cast-in-beam members to reduce cast-in-place concrete as much as possible to shorten the construction period and improve the reliability of foundation members.

For example, in Japanese Examined Patent Publication No. 52-33403, "Foundation method of concrete structure", PC foundation beam member and PC
It describes how to build a cloth foundation using the foundation plate. Figure
This will be briefly described with reference to FIGS. FIG. 36 is a perspective view showing the PC base beam member 1, 14 is an end vertical groove formed at the end thereof, 19a and 19b are horizontal holes provided in the horizontal direction above and below the PC base beam member 1, Both ends of the PC base beam member 1 are opened to end vertical grooves 14 and reinforcing bars are inserted therein to connect the PC foundation beam members 1 in the longitudinal horizontal direction.

FIG. 37 is a cross-sectional view of the constructed cloth foundation. A PC foundation slab 2 is laid on the ground where the ground is cut into grooves and sand is laid horizontally on the bottom, and the PC foundation beams are placed on the top surface. Member 1
Is placed in a vertical position, and as described above, the upper main bar 31 and the lower main bar 32 are horizontally inserted above and below the PC foundation beam member 1 to insert the mortar 4 into the internal space of the PC foundation beam member 1 and the upper surface of the foundation plate 2. Is injected and filled to integrate the PC foundation beam member 1 and the PC foundation plate 2, and the upper main bar 31 and the lower main bar 32 are joined to the PC basic beam member 1 via mortar to form the PC basic beam member 1 and the PC basic beam member. The foundation plate 2 is connected in the foundation direction (longitudinal direction).

[0005]

[Problems to be Solved by the Invention] By the way, Japanese Patent Publication No. 52-3
In the method of installing the cloth foundation described in Japanese Patent No. 3403,
There is a problem in the construction of the main bars placed above and below the foundation beam member.
That is, the upper and lower main reinforcements are inserted from one end of the PC foundation beam member in the longitudinal direction of the cloth foundation, but if there is any structure adjacent to it, the long reinforcement cannot be inserted from that side. Also, as shown in Fig. 37, the lower main bar 32 of the lower part is usually lower in height than the ground surface (GL). It is extremely difficult to insert a long reinforcing bar in the side hole 19b.

The present invention eliminates this rebar insertion work, improves workability, simplifies the shape of the PC foundation beam member, and more efficiently constructs a cloth foundation having the same strength. The object is to realize a member, a foundation plate, and a method of constructing a fabric foundation using these.

[0007]

The PC foundation beam member of the present invention has two rectangular side walls mounted on the PC foundation plate in the direction of the foundation with the opposite long sides up and down, and these two side walls. It consists of two partition walls that join the side walls in the longitudinal direction inside both end faces,
A PC foundation beam member for a cloth foundation or a solid foundation having end vertical grooves formed at both end portions by the partition wall, and a hollow portion formed inside the partition wall on both sides in a vertical direction, The partition wall has an upper V-shaped groove in which a reinforcing bar is arranged at an upper end thereof, an end circulation hole through which mortar flows at an intermediate position in the vertical direction, and a lower circulation hole through which mortar also flows at a lower end. Preferably, a step projection is formed on a part of the upper surface of the side wall, and the side wall of the PC foundation beam member is bent 90 degrees at a central position in the foundation direction. A PC foundation beam member suitable for use in a corner portion of a cloth foundation or a solid foundation, or at least one of side walls of the PC foundation beam member is cut at a position outside the partition wall. is there Or is a suitable PC foundation beam member for use in the T-shaped connecting portion of the solid foundation, or the PC
At the center of the side wall of the foundation beam member in the foundation direction, the upper V-shaped groove in which the reinforcing bar is arranged at the upper end, the side passage hole where the mortar flows at the intermediate position in the vertical direction, and the mortar also flows at the lower end. A PC foundation beam member having a lower flow hole and suitable for use in a cross-shaped intersection of a cloth foundation or a solid foundation, or at the center position of the side wall of the PC foundation beam member in the foundation direction. A PC-shaped beam member is cut in a central position in the direction of the foundation and is connected in a right-angled direction to form a T-shape, and any one of the three-direction side walls of this T-shape has a height in the other direction. It is a PC foundation beam member suitable for use in a step portion of a cloth foundation or a solid foundation which is formed lower than the portion.

Further, the PC foundation plate of the present invention includes a pair of opposing side frames placed on the ground in the foundation direction, a pair of outer frames connecting inner ends of the side frames, and a pair of these outer frames. A PC foundation plate for a cloth foundation, which comprises an inner frame that connects the side frames on the inside of, and has a bottom plate on the lower surface of the pair of side frames and the outer frame or the middle frame. A horizontal concave portion on which the PC foundation beam member is placed is formed at the center position of the outer frame and the middle frame upper side corresponding to the center of the PC foundation plate in the width direction, and a lower V shape in which a reinforcing bar is arranged in the center of the horizontal concave portion. Preferably, the outer frame and the middle frame are provided with deep grooves in which reinforcing bars are arranged on both outer sides of the horizontal recess, and the longitudinal length of the side frame of the PC foundation plate is preferable. There is a horizontal recess in the middle of the direction, and the reinforcement is placed in the center of this horizontal recess. It is the above PC foundation plate, characterized in that it includes a lower V-shaped groove being.

The PC support base of the present invention is composed of four side frames forming the side surfaces of a rectangular parallelepiped having a substantially square planar shape.
A PC support base for a cloth foundation or a solid foundation having no upper and lower bottom surfaces, in which a horizontal recess on which a PC foundation beam member is placed is formed at a central position of the upper side of the side frame, and a reinforcing bar is formed at the center of the horizontal recess. A lower V-shaped groove to be arranged is provided.

According to the method of constructing a cloth foundation using the PC foundation beam member and the PC foundation plate of the present invention, the ground is cut into roots, and a horizontal concave portion and a lower V-shaped groove are formed at the center position in the width direction on the bottom surface thereof. PC slabs are continuously laid in the direction of the foundation,
After arranging the lower main bar in the lower V-shaped groove, the upper V-shaped groove in which the reinforcing bar is arranged at the upper end of the partition wall, the end circulation hole through which the mortar flows at an intermediate position in the vertical direction, and the mortar of the same shape at the lower end. The PC foundation beam member having a lower circulation hole that circulates is laid in the horizontal recess continuously in the foundation direction in a vertical posture, and the upper main bar is arranged in the upper V-shaped groove, and then the PC foundation beam member is provided. Inject mortar from the connection part and hollow part of P
It is characterized in that mortar is filled from the inside of the C foundation beam member and the upper surface of the PC foundation plate to the inside to integrally bond the PC foundation beam member and the PC foundation plate.

The PC foundation beam member and PC of the present invention
The method of constructing a cloth foundation or a solid foundation using a support base is as follows: the ground is cut and a support plate is continuously laid on the bottom surface of the base, and the support plate is positioned at the end or the connection part of the PC foundation beam member. On the upper surface, the above-mentioned PC support base having a horizontal concave portion and a lower V-shaped groove formed at the center of the upper side is laid, and after the lower main bar is arranged in the lower V-shaped groove, the upper part where the reinforcing bar at the upper end of the partition wall is arranged. The PC foundation beam member provided with a V-shaped groove, an end circulation hole through which mortar circulates at an intermediate position in the vertical direction, and a lower circulation hole through which mortar also circulates at the lower end is vertically laid in the horizontal recess in the vertical posture. Direction, and after arranging the upper main reinforcement in the upper V-shaped groove, mortar is injected from the connecting portion and the hollow portion of the PC base beam member to the inside of the PC base beam member and the inside of the PC support base and its inside. Fill the surrounding area with mortar and use the P The foundation beam members and PC support table characterized by binding together.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings. 1 is a front view showing a part of the PC foundation beam member 1 by cutting, FIG. 2 is a plan view of the same, and FIG. 3 is a side view.
Reference numeral 11 is two rectangular side walls, 12 is a step projection formed on a part of the upper surface of the side wall, 13 is a double-sided partition wall that vertically joins the two side walls 11 inside both end surfaces, and 14 is End flutes formed on both side ends of the PC foundation beam member 1 by two partitions 13
Is a hollow part formed inside by two partitions 13 and 16
Is provided at the upper end of the partition wall 13 and the upper part V where the reinforcing bars are arranged
The shaped groove, 17 is provided at an intermediate position in the vertical direction of the partition wall 13, an end circulation hole through which mortar flows, and 18 is a lower circulation hole, which is also provided at the lower end portion of the partition wall 13 and through which mortar flows.

To give an example of dimensions, the length of the side wall in the base direction (in this specification, the longitudinal direction of the base) is 910 m.
The module dimensions are m, 1000 mm, 1200 mm, etc., the height is 550 mm, and the central step protrusion is 30 mm higher. The width (thickness) of the foundation is, for example, 120 mm, but it may be 240 mm, 150 mm, 300 mm or the like.

Next, FIG. 4 is a front view showing a part of the PC foundation plate 2 partially cut, FIG. 5 is a plan view of the same, and FIG. 6 is a side view showing a part thereof, where 21 is a pair of opposing side frames. , 22 is this side frame 21
A pair of outer frames that connect the inner sides of both ends, 23 is an inner frame that connects the side frames 21 inside the pair of outer frames 22, and 24 is surrounded by the pair of side frames 21 and the outer frame 22 or the inner frame 23. The bottom slab provided on the lower surface of the portion to be covered, 25 is a drain hole provided near the center of the bottom slab 24, 26 is a horizontal recess formed in the central position of the outer frame 22 and the middle frame 23, and 27 is the center of this horizontal recess. The lower V-shaped groove 34 in which the provided reinforcing bars are arranged is a main crossing bar perpendicular to the longitudinal direction of the foundations arranged in the outer frame 22 and the middle frame 23.

The horizontal recesses 26 of the outer frame 22 and the middle frame 23 are
Deep grooves 28 for locating longitudinal force distribution muscles on both outer sides of
Should be provided. The PC foundation plate 2 has a rectangular frame shape as a whole and is lightweight, but the bottom plate 24 is partially provided to resist the sinking. To give an example of dimensions, the length in the direction of the foundation is 1000 mm, the width is 500 mm, and the thickness is 1
At 50 mm, the horizontal recess 26 is 10 mm below the surface. Figure 5
When two inner frames 23 are provided inside the outer frame 22 as in the example shown in, the outer frame 22 is 125 mm inside from the end of the side frame.
2. If the space between the inner frame 23 is 250 mm, the outer frame 22 and the inner frame 23 will be equally spaced when continuously laid.

Next, a method of constructing the cloth foundation according to the embodiment of the present invention will be described. FIG. 7 is a sectional view showing a cloth foundation of an embodiment using the PC foundation beam member and the PC foundation plate of the present invention, and FIG.
FIG. 3 is a perspective view showing a main part thereof, 31 is an upper main bar arranged in the upper V-shaped groove 16, 32 is a lower main bar arranged in the lower V-shaped groove 27, and 33 is an outer side of the lower main bar 32. Power distribution muscles 4 arranged in parallel with this are mortars.

The ground is cut off and sand is laid horizontally on the bottom surface of the ground, and the PC foundation 2 is continuously laid in the foundation direction. As described above, the PC foundation plate 2 has the horizontal concave portion 26 and the lower V-shaped groove 27 formed at the central position in the longitudinal direction. First, after arranging the lower main reinforcement 32 in the lower V-shaped groove 27, the PC foundation beam member 1 is continuously laid in the vertical direction on the horizontal recess 26 in the foundation direction. As shown in FIG. 8, the PC foundation beam member 1 and the PC foundation plate 2 have the same length in the foundation direction, and they may be displaced by a half pitch during installation.

Since the upper V-shaped groove 16 in which the reinforcing bar is arranged is provided at the upper end of the partition wall 13 of the PC foundation beam member 1 as described above, the upper main reinforcing bar 31 is arranged therein. In this way, since both the lower main bar 32 and the upper main bar 31 can be dropped into the open V-shaped groove, it is not necessary to insert them horizontally from the holes at the ends as described in the prior art. Reinforcing bars can be arranged without any trouble even if there are surrounding structures or even at the bottom of the ground.

By the way, the upper and lower main bars 31, 32 need to be arranged in the longitudinal direction of the cloth foundation while wrapping them with a predetermined size, but in the present invention, both of the upper and lower main bars 31, 32 are open V-shaped grooves. Since it is dropped into the inside, the situation of the wrap can be easily confirmed visually. After arranging, if mortar is injected from the opening of the end vertical groove 14 and the hollow portion 15 of the connecting portion of the PC foundation beam member, the mortar has no aggregates and has good fluidity, and the partition wall 13 is vertically middle. The PC base beam member 1 and the PC base plate 2 are filled with mortar inside the PC base beam member 1 and the PC base plate 2 through the end flow hole 17 provided at the position and the lower flow hole 18 provided at the lower end. Are integrally joined together with the upper main bar 31 and the lower main bar 32 to construct an inverted T-shaped cloth foundation.

FIG. 9 is a partial front view of the constructed cloth foundation,
The base S is placed on the step projection 12 of the PC foundation beam member 1 and is fixed to the PC foundation beam member 1 by an anchor bolt (not shown). Underfloor ventilation holes V are formed on both sides of the step protrusion 12. That is, by providing the step protrusion 12 on the PC foundation beam member 1, it is possible to eliminate the conventional ventilation hole on the side surface of the foundation beam, and it is possible to avoid a partial reduction in strength of the foundation beam due to the ventilation hole. In the case of a foundation that does not require a ventilation hole, the step protrusion 12 may not be provided on the PC foundation beam member 1.

FIG. 10 is a partial plan view of the connecting portion of the PC base beam member 1, showing the planar shapes of the end vertical groove 14 and the hollow portion 15 formed by the side wall 11 and the partition wall 13. Since both ends of the abutted side walls 11 are only in contact with each other and are not joined, the width of the mortar portion in the connection portion is expanded by expanding the wall surface of the outer end vertical groove 14 of the partition wall 13 close to the surface of the side wall 11. , The difference in strength between the main body and the joint is equalized.

FIG. 11 is a partial perspective view of a portion where the anchor bolt 5 is arranged on the cloth foundation. Reference numeral 51 is a fixture for fixing the anchor bolt, 52 is an insert nut attached to the back surface thereof, and 53 is an insert nut 52. The connected anchor bar, 54 is a fixed rod. The anchor bolt is preferably attached before laying the PC foundation beam member 1, but it can be attached after laying and before pouring mortar.

FIG. 12 is a partial perspective view showing a lattice reinforcement 36 provided between the upper main reinforcement 31 and the lower main reinforcement 32, and FIG. 13 is a partial perspective view showing a joint reinforcement 35 connecting the upper main reinforcement 31 and the lower main reinforcement 32. is there. After arranging the upper main bars 31, all of these are suspended from above in the hollow portion 15 of the PC foundation beam member 1 and supported by the upper main bars 31. However, it is necessary that the lower end portion extends below the lower main bar 32. Bending the lower ends of the lattice reinforcement 36 and the connecting reinforcement 35 in the direction of the main reinforcement is convenient for hanging.

FIG. 14 is a perspective view showing a joint muscle unit in which two joint muscles 35 are attached to auxiliary muscles 37, and FIG.
FIG. 4 is a perspective view showing a state in which it is mounted between 31 and a lower main bar 32. By attaching multiple joint reinforcements 35 to the auxiliary reinforcements 37 in advance as shown in Fig. 14, it is possible to determine the attachment intervals and squareness of the joint reinforcements 35 in a situation where the factory is easy to manage. This joint muscle unit
The joint muscle 35 can be accurately arranged simply by placing it on the top.

The auxiliary muscle 37 does not have to be thick because it serves only to position the joint muscle 35. For example, when the upper and lower main muscles have a diameter of 19 mm, the auxiliary muscle may have a diameter of about 10 mm. In addition, if it is unstable just to place the joint reinforcement unit on the upper main reinforcement 31, it may be bound with a wire or spot welded. As described above, in the present invention, all the reinforcing bars are inserted from the outside at the time of constructing the cloth foundation, except that the main crossing bars 34 of the PC foundation plate are enclosed at the manufacturing stage. 1 is unreliable at the manufacturing stage,
Since the PC foundation plate 2 is also lightweight, it is easy to transport and handle these, and no heavy equipment is required when constructing the cloth foundation. For example, the weight of the PC foundation beam member 1 shown in FIGS. 1 to 3 is about 70 kg.

Next, as another embodiment of the present invention, a case where a PC support is used instead of the PC foundation plate will be described. Fig. 16
FIG. 17 is a front view showing a part of the PC support base 6 partially cut away, FIG. 17 is a plan view of the same, and 61 is a side surface of a rectangular parallelepiped having a substantially square planar shape and having four bottom surfaces, and 62 is a side frame. A horizontal recess formed in the central position of the upper side of each side frame 61 on which the PC foundation beam member 1 is mounted is denoted by 63, and a lower V-shaped groove 63 provided in the center of the horizontal recess 62 is provided with a reinforcing bar.

To give an example of dimensions, the bottom surface of the PC support base 6 is
200mm square, height 150mm, thickness of side frame 61 is 30mm at the thickest bottom, and horizontal recess 62 is 10mm lower than the surface. Next, a method of constructing a foundation using the PC support base 6 will be described. FIG. 18 is a cross-sectional view showing a cloth foundation using the PC support base 6, and 7 is a support plate which is a thin plate of concrete or the like, and other reference numerals are the same as before. Support plate 7
For example, the dimension is 200 mm in width and 20 mm in thickness, and the length may be appropriately determined for the convenience of construction, but it is desirable that it is at least the length of the PC foundation beam member or longer.

The ground is cut and a support plate 7 is continuously laid on the bottom surface of the ground, and a PC support base 6 is provided on the upper surface of the support plate 7 at a position to be an end portion or a connection portion of the PC foundation beam member 1. After laying and placing the lower main bar 32 in the lower V-shaped groove 63,
The PC foundation beam member 1 is continuously laid in the vertical direction in the horizontal concave portion 62 of the PC support base 6 in the foundation direction, and the upper main reinforcement is provided in the upper V-shaped groove 16.
After arranging 31, the mortar 4 is injected from the connecting portion and the hollow portion of the PC base beam member 1 to fill the mortar inside the PC base beam member 1 and inside the PC support base 6 and its surroundings, and the PC base beam member 1 and the PC support base 6 are integrally connected. In this example, in order to construct a cloth foundation, it is necessary to provide a formwork at a predetermined position which is the width of the cloth foundation on the outside of the PC support base 6. However, in the case of a solid foundation, the form foundation is not provided on the solid foundation side. There is no need to provide a formwork.

FIG. 19 is a partial front view of the constructed cloth foundation. If the PC foundation beam member 1 having a step projection is used, the underfloor ventilation hole V can be formed as shown in FIG. FIG. 20 is a plan view showing a supporting structure for reinforcing bars when the PC support base 6 is used, and FIG. 21 is a partial perspective view thereof. Unlike the PC foundation plate 2, the PC support base 6 does not project to the position of the force distribution muscles, so that it is not possible to provide something like the deep groove 28 in FIG. 6 to support it. Therefore, the distribution muscles 33 in the foundation direction and the main crossing bars 34 perpendicular to the basic direction are combined in a ladder shape so that the main crossing bars 34 at predetermined positions are arranged in the vicinity of the PC support 6, and the adjacent main crossing bars 34 are also arranged. With respect to the PC support base 6, the width stop bars 38 are arranged in the width direction at intervals, and the whole is fixed by spot welding or the like. Then, as shown in FIG. Are used to suspend the crossing main bars 34 which are in close proximity to each other so as to support all the reinforcing bars. The S-shaped hook 55 is made by bending a steel bar or a strip steel into an S-shape.

Although the standard linear cloth foundation has been described so far, non-linear portions such as L-shape, T-shape, and cross-shape are generated in the actual foundation due to the floor plan of the building. These will be described below. 22 is a plan view showing the PC foundation beam member 1a used for the L-shaped portion, and FIG. 23 is a front view of the same. There is no difference from the general PC foundation beam member 1 shown in FIGS. 1 to 3 described above except that the side wall 11 is bent 90 degrees at the central position in the cloth foundation direction. Used for corners of foundation.

24 and 25 are partial plan views showing a method of constructing a T-shaped intersecting portion of a cloth foundation or a solid foundation. On one side of the side wall 11 of the ordinary PC foundation beam member 1, use two sheets of the shape (reference numeral 1b) in which the outer side portion 11a is previously cut from the partition wall 13 (reference numeral 1b), and make them approach as shown by an arrow. And Fig. 25
T-shaped intersections are formed and are joined together by mortar. The PC foundation beam member 1b may be prepared as a normal one and the outer portion 11a may be cut locally.

FIG. 26 is a partial plan view showing an example of constructing a cross intersection of a cloth foundation or a solid foundation. Ordinary PC foundation beam members 1 are gathered from four directions and filled with mortar in the spaces formed by the respective end longitudinal grooves to join them together.
On the other hand, there is also a different method of constructing a cross-shaped intersection of cloth foundations. In this case, a slightly different PC base beam member (reference numeral 1c) is used. FIG. 27 is a front view of the PC foundation beam member 1c, and FIG.
Shown in. That is, for the general PC foundation beam member 1,
The central part of the side wall 11 is the upper part V where the reinforcing bar is arranged at the upper end.
There is no difference except that the groove 16c is provided with a side flow hole 17c through which mortar flows at an intermediate position in the vertical direction and a lower flow hole 18c through which mortar also flows at the lower end. Figure 29
As shown in, the normal P at the center position of the PC foundation beam member 1c.
Even if the C foundation beam members 1 are joined at right angles, the side flow holes 17
Since mortar flows through c and the lower circulation hole 18c,
The joint is integrated by mortar.

In the non-linear portion such as the L-shaped, T-shaped, and cross-shaped portions of these foundations, the PC foundation beam members are placed in the direction perpendicular to them in addition to the longitudinal direction. Need to correspond. Also in the PC foundation 2 shown in FIGS. 4 and 5, the horizontal recess 26 is formed in the outer frame 22 and the middle frame 23.
In addition to the above, the horizontal concave portion 26 is provided at an intermediate position in the longitudinal direction of the side frame which is the direction perpendicular to these, and the lower V-shaped groove 27 in which the reinforcing bar is arranged is provided at the center of the horizontal concave portion. Depending on the design, this horizontal recess in the right-angle direction may be the center of the foundation plate.

In the case of the PC support base 6, since the horizontal concave portions 62 are provided on the upper sides of the four side frames, it is possible to directly cope with any portion such as a straight portion, a corner portion or a cross-shaped intersection of the foundation. FIG. 30 is a plan view showing an example in which an L-shaped foundation is constructed by the PC support base 6 and the PC foundation beam member 1a, and FIG.
It is a top view which shows the example which constructed | assembled the T-shaped foundation with the C support stand 6 and the PC foundation beam members 1 and 1b.

FIG. 32 shows another modification of the PC foundation beam member (reference numeral).
It is a top view which shows 1d). When the length of the PC foundation beam member in the direction of the foundation is set to be larger than the above examples and is set to 1 m or more, for example, the partition walls 13 at both ends alone reduce the strength of the side wall 11. Therefore, a partition wall 13b should be provided in the center. is there. In addition, although not particularly shown, a hole may be provided in the center of the side wall of the PC foundation beam member 1 to serve as a ventilation hole when a step protrusion is not provided on the upper surface, or may be used as a hole for passing pipes.

FIG. 33 is a perspective view showing an example of T-shaped PC foundation beam members 1e and 1f used when a step is provided on the floor such as the entrance and exit. At the center position of the side wall 11 of the PC foundation beam member 1 shown in FIGS.
A C-shaped beam member 1 is cut at a central position in the direction of the base to connect it in a right angle direction, and a T-shaped side wall 11 in any of the three directions has a height direction. It is formed lower than the other parts.

34 and 35 are perspective views showing examples of presser pieces 56a and 56b used when laying a PC foundation beam member. The retainer 56a is a straight portion of the foundation, and is covered over the ends of the PC foundation beam members on both sides to be connected so as to prevent the displacement of the connection portion. An opening for injecting mortar is provided on the upper surface of the pressing piece 56a. Similarly, the retainer 56b is placed over the T-shaped intersection of the foundation so as to straddle the PC foundation beam members on three sides to prevent the displacement of the connection portion. In addition to this, various shapes can be used as required. These pressers can be removed and reused after the mortar is hardened.

[0038]

According to the present invention, the reinforcing bars connecting the block-shaped PC foundation beam member and the PC foundation plate in the longitudinal direction of the foundation are not inserted from the ends of the PC foundation beam member and the PC foundation plate, Since it can be constructed simply by dropping it into the V-shaped groove, it has an excellent effect that it is extremely easy to construct a cloth foundation or a solid foundation using the PC foundation beam member.

[Brief description of drawings]

FIG. 1 is a front view showing a partially cut PC base beam member of the present invention.

FIG. 2 is a plan view showing a PC foundation beam member of the present invention.

FIG. 3 is a side view showing a PC foundation beam member of the present invention.

FIG. 4 is a front view showing the PC foundation plate of the present invention by cutting a part thereof.

FIG. 5 is a plan view showing a PC foundation plate of the present invention.

FIG. 6 is a side view showing the PC foundation plate of the present invention by partially cutting it.

FIG. 7 is a cross-sectional view showing a cloth foundation using the PC foundation beam member and the PC foundation plate of the present invention.

8 is a perspective view showing a main part of the cloth foundation of the present invention shown in FIG. 7. FIG.

FIG. 9 is a partial front view showing a cloth foundation constructed by using the PC foundation beam member and the PC foundation plate of the present invention.

FIG. 10 is a partial plan view showing a connecting portion of the PC foundation beam member of the present invention.

FIG. 11 is a partial perspective view showing a part of the PC foundation beam member of the present invention.

FIG. 12 is a partial perspective view showing a lattice streak to be inserted into the PC foundation beam member of the present invention.

FIG. 13 is a partial perspective view showing a joint line to be inserted into the PC foundation beam member of the present invention.

FIG. 14 is a perspective view showing a joint reinforcement unit to be inserted into the PC foundation beam member of the present invention.

15 is a perspective view showing a state in which the joint muscle unit of FIG. 15 is attached between an upper main bar and a lower main bar.

FIG. 16 is a front view showing a partially cutaway view of the PC support base of the present invention.

FIG. 17 is a plan view showing a PC support base of the present invention.

FIG. 18 is a cross-sectional view showing a cloth foundation using the PC foundation beam member and the PC support of the present invention.

FIG. 19 is a cross-sectional view showing a cloth foundation constructed using the PC foundation beam member and the PC support base of the present invention.

FIG. 20 is a plan view showing a support structure for reinforcing bars when the PC support base of the present invention is used.

FIG. 21 is a partial perspective view showing a support structure for reinforcing bars when the PC support base of the present invention is used.

FIG. 22 is a plan view showing a PC foundation beam member used for the L-shaped foundation portion of the present invention.

FIG. 23 is a front view showing a PC foundation beam member used for the L-shaped foundation portion of the present invention.

FIG. 24 is a partial plan view of a PC foundation beam member used for the T-shaped intersecting portion of the present invention.

FIG. 25 is a partial plan view of a PC foundation beam member used for the T-shaped intersecting portion of the present invention.

FIG. 26 is a partial plan view showing an example of constructing a cross-shaped intersection portion of the present invention.

FIG. 27 is a front view showing a PC foundation beam member used in the cross-shaped intersection portion of the present invention.

FIG. 28 is a plan view showing a partially cut PC base beam member used in the cross-shaped intersection portion of the present invention.

FIG. 29 is a partial plan view showing another construction example of the cross-shaped intersection portion of the present invention.

FIG. 30 is a plan view showing an L-shaped foundation portion constructed by a PC support base and a PC foundation beam member of the present invention.

FIG. 31 is a plan view showing a T-shaped foundation portion constructed by a PC support base and a PC foundation beam member of the present invention.

FIG. 32 is a plan view showing a modified example of the PC foundation beam member of the present invention.

FIG. 33 is a perspective view showing an example of a T-shaped PC foundation beam member used when a step is provided on the floor in the present invention.

[Fig. 34] Fig. 34 is a perspective view showing an example of a presser foot used when laying a PC foundation beam member in the present invention.

FIG. 35 is a perspective view showing an example of a retainer used when laying a PC foundation beam member in the present invention.

FIG. 36 is a perspective view showing a PC foundation beam member in a conventional technique.

FIG. 37 is a cross-sectional view of a cloth foundation using a PC foundation beam member in a conventional technique.

[Explanation of symbols]

1, 1a, 1b, 1c, 1d PC foundation beam members 2 PC foundation 3 bar arrangement 4 mortar 5 anchor bolts 6 PC support 7 Support plate 11 Side wall 11a Outer part (of sidewall) 12 Step protrusion 13 bulkhead 14 Edge flute 15 Hollow part 16, 16a Upper V-shaped groove 17 Edge circulation hole 17a Side flow hole 18, 18a Lower flow hole 19 Horizontal hole 21 Side frame 22 Outer frame 23 Middle frame 24 bottom plate 25 Drain hole 26, 62 Horizontal recess 27, 63 Lower V-shaped groove 28 deep groove 31 upper bar 32 Lower main muscle 33 muscle 34 Main intersection 35 joint muscle 36 lattice 37 Auxiliary muscle 38 width stop 51 fixed hardware 52 Insert nut 53 Anchor muscle 54 Fixed rod 55 S type hook 56a, 56b metal fittings 61 Side frame G ground S foundation V Underfloor ventilation hole

Claims (12)

[Claims] 1. A P direction in the direction of the foundation with the opposite long sides up and down.
It comprises two rectangular side walls (11) to be placed on the C foundation plate, and two partitions (13) which vertically join the two side walls (11) inside the end faces on both sides. The end flutes (14) formed on both ends by the partition (13) and the partition (1
3) Hollow part (1
5) A PC foundation beam member (1) for a cloth foundation or a solid foundation, comprising: an upper V-shaped groove (16) in which a reinforcing bar is arranged at an upper end portion of the partition wall (13); A PC foundation beam member, characterized in that an end flow hole (17) through which mortar flows is provided at a position, and a lower flow hole (18) through which mortar also flows at the lower end. 2. The PC foundation beam member according to claim 1, wherein a step protrusion (12) is formed on a part of an upper surface of the side wall (11). 3. The side wall (11) of the PC foundation beam member (1) according to claim 1 or 2 is 90 at a central position in the foundation direction.
A PC foundation beam member that has a bent shape and is suitable for use in the corners of a cloth foundation or a solid foundation. 4. The PC foundation beam member (1) according to claim 1, wherein at least one of the side walls (11) is cut at a position outside the partition wall (13), and a cloth foundation or a solid foundation is obtained. A PC foundation beam member suitable for use in the T-shaped connection portion of. 5. The PC foundation beam member (1) according to claim 1 or 2, at a central position in the foundation direction of the side wall (11),
The upper V-shaped groove (16c) where the reinforcing bar is arranged at the upper end, and the side flow hole (17c) through which the mortar flows at an intermediate position in the vertical direction.
And the lower circulation hole (18
c) A PC foundation beam member having and) suitable for use at a cross intersection of a cloth foundation or a solid foundation. 6. The PC foundation beam member (1) according to claim 1 or 2 at the central position of the side wall (11) of the PC foundation beam member (1) according to claim 1 or 2 in the foundation direction. T-shaped side wall (11) in which the shapes cut at the center position of the T-shape are connected at right angles.
A PC foundation beam member suitable for use in a stepped portion of a cloth foundation or a solid foundation, in which any one of them is formed lower than the other in the height direction. 7. A pair of opposing side frames (21) placed on the ground in the foundation direction, a pair of outer frames (22) connecting inside ends of the side frames (21), and a pair of these side frames (21). An inner frame (23) connecting the side frames inside the outer frame (22), and the pair of side frames (21) and the outer frame (22) or the middle frame (23).
A PC foundation plate (2) for a cloth foundation having a bottom slab (24) on a lower surface of a portion surrounded by, the outer frame (22) and the middle frame corresponding to the center in the width direction of the PC foundation plate (2). (23) Forming a horizontal recess (26) in which the PC base beam member (1) is placed at the center of the upper side, and a lower V-shaped groove (27) in which a reinforcing bar is placed in the center of this horizontal recess (26). PC foundation version characterized by the provision of. 8. The deep groove (2) in which the outer frame (22) and the middle frame (23) are provided with reinforcing bars on both outer sides of the horizontal recess (26).
8. The PC foundation plate according to claim 7, which comprises 8). 9. A lower V-shaped groove (27) having a horizontal recess (26) at an intermediate position in the longitudinal direction of the side frame (21) of the PC foundation plate (2) and having a reinforcing bar arranged in the center of the horizontal recess. The PC foundation plate according to claim 7 or 8, further comprising: 10. A PC support base (6) for a cloth foundation or a solid foundation, which is composed of four side frames (61) forming side surfaces of a rectangular parallelepiped having a substantially planar shape and having no upper and lower bottom surfaces, A horizontal V-shaped groove (63) in which a horizontal recess (62) on which the PC foundation beam member (1) is placed is formed, and a reinforcing bar is placed in the center of the horizontal recess (62), is formed at the center position of the upper side of the side frame.
A PC support stand characterized by having a. 11. The ground is cut into a root, and a horizontal concave portion and a lower V-shaped groove are formed in a bottom surface of the ground at a center position in the width direction.
After laying the PC foundation plate according to any one of 1 to 8 continuously in the foundation direction and disposing the lower main bar in the lower V-shaped groove,
6. An upper V-shaped groove in which a reinforcing bar is arranged at the upper end of the partition wall, an end circulation hole through which mortar flows at an intermediate position in the vertical direction, and a lower circulation hole through which mortar also flows at the lower end. After laying the PC foundation beam member according to any one of the above in the horizontal recess continuously in the foundation direction in the vertical direction and disposing the upper main reinforcement in the upper V-shaped groove, the connection portion and the hollow of the PC foundation beam member PC base beam member and PC, characterized in that the mortar is injected from a portion to fill the mortar from inside the PC base beam member and from the upper surface to the inside of the PC base plate to integrally connect the PC base beam member and the PC base plate. How to build a cloth foundation using a foundation plate. 12. The ground is cut, and a support plate is continuously laid on the bottom surface of the ground, and a horizontal concave portion is provided at a central position of the upper side on the upper surface of the support plate at a position to be an end portion or a connection portion of the PC foundation beam member. 11. The PC support base according to claim 10 having a lower V-shaped groove is laid, a lower main bar is arranged in the lower V-shaped groove, and an upper V-shaped groove in which a reinforcing bar is arranged at the upper end of the partition wall 6. The PC foundation beam member according to claim 1, further comprising an end circulation hole through which mortar flows at an intermediate position in the direction, and a lower circulation hole through which mortar also flows at the lower end. After laying continuously in the direction of the foundation in the posture and arranging the upper main bar in the upper V-shaped groove, mortar is injected from the connection portion and hollow portion of the PC base beam member to the inside of the PC base beam member and the PC support base. The PC with mortar filled inside and around it Ishizuehari member and PC foundation beam member and method of constructing the fabric foundation or solid basis for using PC support stand characterized by binding together a PC support base.