JPH04371615A - Foundation of unit residence - Google Patents

Abstract

PURPOSE:To make the intervals of arrangement of RC blocks accurate, and to increase connecting strength and prevent unequal settlement by connecting a plurality of precast concrete blocks disposed in parallel by steel frame-shaped connecting members. CONSTITUTION:A plurality of PC blocks 1 consisting of footing sections 1A and rising sections 1B and having specified length are arranged on a concrete subslab, and adjacent PC blocks 1 are connected mutually by steel frame-shaped connecting members 5 composed of upper materials lower materials and intermediate members. After the foundation has been completed, each residence unit 19 is bridged and placed on the PC blocks 1, and a unit residence by these residence units 19 is constructed on the foundation. Accordingly, the accuracy of execution of the foundation is improved while the unequal settle-ment of the PC blocks 1 can be prevented by the downward load of the unit residence and the increase of connecting strength by the connecting members 5.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a precast concrete (PC) foundation for a unit house.

0002

[Background technology] Unit housing is built by combining multiple housing units that have been pre-produced at a factory front to back, left to right, and up and down at a construction site, and as its foundation, multiple PC blocks extending in a straight line are lined up in parallel. It is known that a housing unit is placed on the ground and a plurality of housing units are placed over these blocks.

0003

[Problem to be Solved by the Invention] In the above conventional foundations for unit houses, PC blocks must be arranged in parallel on the ground at intervals corresponding to the length of the housing unit. Since the PC blocks are independent of each other and form an independent foundation, it is difficult to arrange the PC blocks on the ground at predetermined intervals, and errors tend to occur in the spacing dimensions of the PC blocks. In addition, when a unit house is built on a foundation made of multiple PC blocks, the downward weight of this unit house does not necessarily act equally on each PC block, so these PC blocks will sink unevenly. There was also a fear.

[0004] An object of the present invention is to provide a foundation for a unit house in which each PC block can be accurately placed on the ground at a predetermined interval, and which can prevent these PC blocks from settling unevenly. It's there.

[0005]

[Means for Solving the Problems] A first aspect of the present invention is to arrange a plurality of rectilinearly extending PC blocks in parallel on the ground, and to place a plurality of housing units across these PC blocks. In the foundation of a unit house, P
It is characterized in that the C blocks are connected to each other by a connecting member.

[0006] In the first invention, the connecting member may be a single bar-like member or a single planar member, or may be a steel frame-like member such as a lattice beam. Further, the connecting portion of the connecting member to the PC block may be at an end portion in the length direction of the PC block, or may be a portion in the middle portion in the length direction.

[0007] The second invention of the present invention is the first invention, which comprises:
The connecting member is in the shape of a steel frame, the connecting member is connected to the end face of the PC block at right angles to the PC block, and a panel is attached to the side surface of the connecting member that is the outside of the unit house. It is something.

[0008]

[Operation] When placing the PC blocks in parallel on the ground at a construction site, these PC blocks are connected to each other by a connecting member. As a result, the PC blocks are accurately arranged at intervals corresponding to the length of the housing unit defined by the length of the connecting member, improving foundation construction accuracy. Furthermore, when a unit house is built on top of a foundation made of PC blocks, even if the downward weight of the unit house does not act evenly on each PC block, these PC blocks are connected to each other by connecting members. Because
The occurrence of uneven settlement can be effectively prevented.

[0009] Furthermore, if the connecting member is made into a steel frame shape, the connection strength between the PC blocks can be increased, and if a facing material is attached to the side of the connecting member that is the outside of the unit house, the steel frame-like connecting member can be The appearance is similar to that of a PC block, and the appearance is good.

0010

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows the foundation of a unit house according to this embodiment. This foundation is formed by including a plurality of PC blocks 1 that have been manufactured in advance at a factory and transported to the construction site, and each PC block 1 has a wide footing section 1A at the bottom.
It has an inverted T-shape consisting of a vertically elongated raised part 1B at the top, extends linearly, and has a predetermined length. At the construction site of a unit house, as shown in Figures 3 and 4, sacrificial concrete 4 is placed on top of the chestnut stones 3 spread on the ground 2, and each PC block 1 is arranged in parallel on this sacrificial concrete 4. will be placed.

As shown in FIG. 1, among these PC blocks 1, two adjacent PC blocks 1 are connected by a connecting member 5. Specifically, both ends of the connecting member 5 are connected to both end faces of two adjacent PC blocks 1, and the PC blocks 1 are connected to each other.
The two PC blocks 1 are connected to each other by a connecting member 5 that is perpendicular to the blocks 1. In this embodiment, since there are three PC blocks in total, four connecting members 5 are used in total.

FIG. 2 shows the connecting member 5. As shown in FIG. The connecting member 5 is
It is composed of an upper member 6 made of angle material, a lower member 7 also made of angle material, and an intermediate member 8 formed by bending a bar material into a wave shape and connecting the upper and lower members 6 and 7. The member 5 is in the form of a steel frame in the form of a lattice beam. At both ends of the upper and lower members 6 and 7,
L attached to the horizontal parts 6A, 7A of the upper and lower members 6, 7
Letter-shaped receiving members 9 are provided, and holes 10 are provided in these receiving members 9, and holes 11 opposite to the holes 10 are provided in the vertical portions 6B, 7B of the upper and lower members 6, 7. There is. Further, holes 12 are formed in the vertical parts 6B, 7B of the upper and lower members 6, 7 at positions separated from the holes 11 in the longitudinal direction of the upper and lower members 6, 7, and these holes 12 are formed in the vertical parts 6B, 7B of the upper and lower members 6, 7. A plurality of each are provided in the longitudinal direction. The hole 12 is
This is for inserting the protrusion 13A of the face material 13 shown in FIG. 4, and a nut 14 is embedded in the protrusion 13A. The face material 13 is a plate member made of calcium silicate, and is made of PC
It has the same background color as Block 1.

As shown in FIG. 3, reinforcing bars 15 and 16 are buried inside the PC block 1, and nuts 17 are connected to the ends of these bars. The spacing is the same as the vertical spacing of the holes 10 in the connecting member 5.

Next, the operation of connecting the PC blocks 1 with each other using the connecting member 5 will be explained. Lay out the PC blocks 1 in parallel and place them on the ground 2 with concrete 4.
After placing the two PC blocks 1 on top of each other, place both ends of the connecting member 5 on the end faces of the two PC blocks 1 to be connected with the connecting member 5, and insert holes 1 in the receiving member 9 provided at both ends of the connecting member 5.
0, insert the bolt 18 shown in FIG. 3 into the nut 17, and tighten the bolt 18. The bolt 18 is tightened by inserting a tool such as a screwdriver through the hole 11 provided in the connecting member 5.

Through the above operations, two adjacent PC blocks 1 are connected to each other by the connecting member 5, and the operation of connecting the PC blocks 1 to each other by the connecting member 5 in this way is performed for all PC blocks.
This is done for block 1. Since the connecting member 5 is formed to have a length corresponding to the length of the housing unit 19 which is a component of the unit house shown in FIG.
When the blocks 1 are connected, these PC blocks 1
The interval between the PC blocks 1 and 19 exactly matches the length of the housing unit 19, and high accuracy in the construction of the foundation by the PC blocks 1 forming the independent foundation of the unit housing can be achieved.

After the above operations, the panel 13 is applied to the side surface of the connecting member 5 which is the outside of the unit house as shown in FIG. 4, and the protrusion 13A of the panel 13 is inserted into the hole 12 of the connecting member 5. Next, a bolt 20 having a head larger than the hole 12 is screwed into the nut 14 from inside the unit house and tightened. Since the holes 12 are provided in the connecting member 5 between the plurality of PC blocks 1 arranged in parallel, the bolts 20 can be tightened with a tool such as a screwdriver from inside the unit house. Since the facing material 30 is formed to have the same length dimension as the connecting member 5, when the facing material 13 is attached to the connecting member 5 as described above, the upper and lower members 6, 7 and the intermediate member, which are the constituent members of the connecting member 5, 8 is surface material 1
Covered by 3.

After the above work, the foundation is completed by covering the PC block 1 and the connecting member 5 to approximately half of their height with the soil generated during the root cutting work. After this foundation is completed, as shown in FIG. 1, each housing unit 19 is placed across the PC block 1, and a unit house made of these housing units 19 is built on the foundation. The foundation and the unit house can be connected by filling a sheath pipe buried in the PC block 1 with grout and inserting an anchor member extending downward from the housing unit 19 into the grout, or by inserting an anchor member extending downward from the housing unit 19 into the grout. This is done by joining the housing units 19 with anchor bolts installed vertically.

In the above, each housing unit 1
Since various equipment such as a kitchen unit and a bath unit are arranged inside the PC block 9, the downward weight of the unit house does not necessarily act evenly on each PC block 1. 5, these PC blocks 1 will not sink unevenly. Further, since the connecting member 5 is formed in the shape of a lattice beam type steel frame, the strength of the connection between the PC blocks 1 can be increased, and the strength of the entire foundation can also be increased, so that the strength of the foundation can be increased. In addition, since the facing material 13 is attached to the side surface of the connecting member 5 which is the outside of the unit house, the upper and lower members 6, 7 and the intermediate member 8, which are the constituent members of the connecting member 5, are not exposed to the outside and are connected. Since the appearance of the member 5 is the same as the PC block 1, the appearance of the completed foundation will be good.

In this embodiment described above, the connecting member is a steel frame in the form of a lattice beam.
It may be formed from a book bar or a single sheet of material, and the connection portion of the connecting member to the PC block may not be at the end of the PC block but may be midway in the longitudinal direction of the PC block. but,
If the connecting member is made into a lattice beam steel frame shape as in this embodiment, and the facing material is attached to the outside side of the unit house, the above-mentioned effects can be obtained.

The PC block 1 may also be formed by connecting relatively short blocks in series. Also, PC
The block may have a footing portion and a raised portion formed by connecting upper and lower blocks that are molded separately.

[0021]

[Effects of the Invention] According to the first aspect of the present invention, since the PC blocks are connected to each other by the connecting member, these PC blocks can be arranged on the ground at accurate intervals corresponding to the length of the housing unit. Therefore, the construction accuracy of the foundation is improved, and it is possible to prevent each PC block from settling unevenly due to the downward load of the unit house.

Further, according to the second aspect of the present invention, since the connecting member has a steel frame shape, the PC by this connecting member
The strength of the connection between the blocks can be increased, which makes it possible to more effectively prevent the uneven settlement mentioned above, and increase the overall strength of the foundation.Furthermore, it is possible to attach a panel to the side of the connection member that is the outside of the unit house. Therefore, the appearance of the foundation can be improved.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the entire foundation according to an embodiment of the present invention.

FIG. 2 is an enlarged view of main parts showing the structure of the connecting member shown in FIG. 1;

FIG. 3 is a longitudinal cross-sectional view showing a connection structure of a connecting member to a PC block.

FIG. 4 is a longitudinal cross-sectional view when a face member is attached to the connecting member.

[Explanation of symbols]

1 Precast concrete block 2 Ground 5 Connecting member 10, 11, 12 holes 13　Facing material 14,17 Nut 18,20 volts 19 Housing unit

Claims (2)

[Claims] Claim 1: A plurality of linearly extending precast concrete blocks are arranged in parallel and placed on the ground, and a plurality of housing units are placed over these blocks in the foundation of a unit house, in which the blocks are connected to each other. A foundation for a unit house characterized by being connected by members. 2. In the foundation for a unit house according to claim 1, the connecting member is formed in the shape of a steel frame,
A foundation for a unit house, characterized in that the connecting member is connected to an end face of the block at right angles to the block, and a panel is attached to a side surface of the connecting member that is the outside of the unit house.