JP3058904U - Connection structure of precast concrete fabric foundation members - Google Patents

Abstract

(57) [Summary] [Problem] To ensure continuity between adjacent cloth foundation members when constructing a cloth foundation from a precast concrete cloth foundation member. SOLUTION: Adjacent cloth base members 1, 1 face each other,
The embedding plate 4 is buried at two positions above and below the end portion of the foundation beam portion 2 with a part thereof being exposed, and the recesses 22,
31 are formed. Adjacent cloth base members 1 and 1 are installed with a space between each end face, a connecting plate 6 is laid between embedding plates 4 and 4 exposed on both end faces, and the connecting plate 6 and the embedding plate 4 are bolted. At the same time, the mortar 8 or concrete is filled between the end faces of the two fabric base members 1 and 1 and in the respective recesses 22 and 31.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a connection structure of a precast concrete fabric base member for ensuring continuity of a precast concrete fabric base member manufactured in a form in which a fabric base having a footing is divided.

[0002]

[Problems to be solved by conventional techniques and devices]

 The cast-in-place concrete fabric foundation is constructed by placing concrete on the split stone laid at the bottom of the root and then assembling the reinforcing bars and formwork, and then placing the concrete. Since it is an operation, it takes time for formwork and reinforcement work, and a curing period is required even after casting concrete.Therefore, it is necessary to wait for a certain period of time to build the fabric foundation before starting construction of the building. There must be.

[0003] The problem of the cloth foundation of cast-in-place concrete is solved by using a precast concrete cloth foundation member divided in a certain unit. Therefore, the adjacent fabric base members need to be connected so that stress can be transmitted between them.

[0004] The present invention proposes a connection structure of a fabric base member capable of transmitting stress more reliably than the above background.

[0005]

[Means for Solving the Problems]

 In this invention, the embedding plate is embedded at the end face position of the foundation beam portion of the fabric base member, and a relative recess is formed in the end face, and the embedding plates of the adjacent fabric base members are connected to each other by the continuous plate and are adjacent to each other. Filling mortar or concrete between the end faces of the fabric foundation members ensures the transmission of stress between adjacent fabric foundation members.

[0006] The cloth foundation member is composed of a foundation beam part and a footing part, and the embedding plate is buried at two upper and lower locations in a partially exposed position at an end face position of the foundation beam where the adjacent cloth foundation members face each other. . Four recesses are formed on the end faces of the foundation beam and the footing, excluding the embedding plate, at positions excluding the embedding plate. The recesses are relatively convex on the top and bottom and in the width direction on both sides.

[0007] Adjacent cloth base members are left at intervals between their respective end faces, and the embedding plates exposed at both end faces are bolted to a connecting plate straddled between the two. The mortar or concrete is filled between the end faces of the members and in the respective concave portions to be connected to each other.

[0008] The bending moment (tensile force) between the adjacent cloth foundation members is transmitted by connecting the embedding plates buried in the upper and lower two places with each other, and attempts to cause a displacement between the adjacent cloth foundation members. The vertical shear force and the out-of-plane horizontal shear force of the foundation beam are perpendicular to the gap between the end faces of adjacent fabric foundation members and the inner peripheral surface of the recess where mortar or concrete filled in the recess acts as a shear cotter. It is transmitted by engaging in the out-of-plane horizontal direction with the direction.

[0009] The connecting plate is straddled between the embedding plates embedded in both of the connected fabric base members, and the two embedding plates are connected by bolts, so that the end faces of both the fabric base members are connected in the connected state. Both cloth base members are constrained to each other for movement in either the approaching direction or the away direction.

Due to the effect of the two fabric base members being constrained to each other and the effect of transmitting the vertical and out-of-plane horizontal shear forces between the end faces of the fabric base members, the vertical shear force and the out-of-plane horizontal When a shear force is applied, relative displacement between the vertical and out-of-plane horizontal directions between the two fabric base members is prevented.

[0011] Furthermore, the gap between the two foundation blocks can be kept constant by the effect of the embedding plate and the connection plate restraining the two fabric base members in the opposite direction, so that the manufacturing accuracy of the fabric base member is reduced. If it is high, it will be possible to install the fabric foundation members with high construction accuracy.

[0012] In the above-mentioned two cloth base members, preferably, the two embedding plates of the two cloth base members to be connected to each other are positioned on the same line on a plane, and the connection plates are arranged on both sides of the embedding plate. Since the tensile force between them is transmitted on the axis of the embedment plate, the transmission of the tensile force between the fabric base members is ensured, and eccentricity does not act on the embedment plate and the connection plate. The situation where the embedded plate and the connecting plate are plastically deformed by the moment is avoided.

[0013] Furthermore, the embedding plate is fixed to the foundation beam by embedding an anchor bar to be welded in the foundation beam, and the center line of the embedding plate and the center line of the anchor bar are located on the same line. According to the third aspect, since the eccentricity does not occur between the embedding plate and the anchor bar due to the tensile force, the tensile force between the cloth foundation members is reliably transmitted to both the cloth foundation members, and the foundation beam part is not affected. The situation where the embedded plate undergoes plastic deformation in the fixing section is also avoided.

[0014]

[Embodiment of the invention]

 As shown in FIGS. 1 to 4, the present invention connects the embedment plates 4 buried at the end faces of the foundation beam 2 of the fabric foundation member 1 composed of the foundation beam 2 and the footing 3 together with each other. The mortar 8 or concrete is filled in the relative recesses 22 and 31 formed on the end surfaces of the beam 2 and the footing 3 to connect the adjacent fabric base members 1 and 1 to each other.

The plane shape of the cloth foundation member 1 is determined by the installation position in the whole cloth foundation, and as shown in FIG. 9, the L-shaped, T-shaped or cross-shaped shape is orthogonal at a portion extending in two directions. However, the connection of the adjacent fabric base members 1, 1 is performed by joining with the connecting plate 6 and filling the mortar 8 or concrete irrespective of the plane shape.

As shown in FIGS. 2 to 4, a substantially semicircular notch 21 for connecting the embedding plates 4, 4 is provided at the end face of the foundation beam 2 at the embedding position of the embedding plate 4. Upper and lower portions are formed at two places, and a part of the embedding plate 4 is exposed at the notch 21 portion. The embedding plate 4 is exposed at the center of the notch 21 as shown in FIG. 3, and the notch 21 is formed on both sides of the embedding plate 4. The exposed end of the embedding plate 4 does not project from the end face of the foundation beam 2 so as not to collide with the adjacent fabric foundation 1.

As shown in FIGS. 10 to 12, the embedding plate 4 is anchored to the foundation beam 2 by being embedded in the concrete of the foundation beam 2 with the anchor bar 5 welded thereto or together with the anchor bar 5. Is done. The burying plate 4 is buried at two locations above and below the foundation beam 2 to transmit tensile force between the fabric foundation members 1 and 1. As shown in FIG. 10, the center line of the embedding plate 4 and the center line of the anchor bar 5 are connected to one end of the embedding plate 4 to prevent eccentricity between the embedding plate 4 and the anchor bar 5 due to tensile force. The notch 5 is cut out so that it can be inserted, and the end of the anchor streak 5 is inserted into this notch so as to be located on the same line.

As shown in FIG. 2 and FIG. 4, the recesses 22 of the foundation beam 2 are vertically arranged at three positions on the end face of the foundation beam 2, excluding the embedding plate 4, at an upper portion, an intermediate portion, and a lower portion. The footing portion 3 is formed in a long rectangular shape, and the concave portion 31 of the footing portion 3 is formed in such a size as to tighten most of the end face of the footing portion 3 except the dish side and the edge. The concave portions 22 and 31 are formed in a horizontally long rectangular shape depressed from the end surface of the foundation beam portion and the end surface of the footing portion 3, respectively, and the upper and lower portions and both sides in the width direction of the concave portions 22 and 31 are relatively convex.

The recesses 22 and 31 have a depth from the end face enough to transmit the shear force in the vertical direction due to the supporting force of the mortar 8 or concrete and the shear force in the horizontal direction out of the plane of the foundation beam 2. have.

The cloth base member 1 is disposed on a level adjusting material such as a discarded concrete or leveling mortar, or a setting plate 11 placed on a leveling sand 10 piled on a crushed stone 9 as shown in FIG. The fabric base members 1, 1 are spaced apart from each other.

As shown in FIGS. 10 to 12, the embedding plates 4 and 4 of the adjacent cloth base members 1 and 1 pass between them a connecting plate 6 having both ends in a substantially semicircular shape, and the connecting plate 6 and the embedding plate Bolts 7 penetrating through 4 are connected by joining the two, and transmit a tensile force (bending moment) between adjacent fabric base members 1, 1.

The embedding plates 4, 4 of the two fabric base members 1, 1 connected to each other are located on the same plane on the same plane so that no eccentricity acts on the embedding plate 4 and the connecting plate 6. For this reason, the connecting plates 6 are arranged on both sides of the embedding plate 4.

The notch 21 of the foundation beam 2 is filled with mortar 8 or concrete after the embedding plates 4 and 4 are connected as shown in FIG. The rate 4, the connecting plate 6 and the bolt 7 are protected, and the cutout 21 is compensated for.

After the mortar 8 and the concrete are connected to the embedding plates 4 and 4, the adjacent cloths as shown in FIG. 6 which is an arrow view in FIG. 5 and FIG. The space between the foundation members 1 and 1 and the recesses 22 and 31 of the foundation beam 2 and the footing 3 are filled. The mortar 8 and the concrete are filled in the concave portions 22 and 31 to transmit shear force between the cloth foundation members 1 and 1 in the vertical direction and the horizontal direction out of the plane of the foundation beam portion 2 by the supporting pressure. A non-shrinkable premix mortar is used for the mortar 8 in order to secure the strength.

[0025]

[Effect of the invention]

 By connecting the embedding plates embedded at the end faces of the foundation beams to each other by connecting plates, the tensile force is transmitted, and the end faces of the foundation beams and the footing are removed at positions other than the embedding plate embedding positions. By filling mortar or concrete into the four recesses formed relatively concave from the end face, the shear forces in the vertical direction and out-of-plane horizontal direction of the foundation beam are transmitted, so they are adjacent to each other without fail. Stress can be transmitted between the fabric base members, and continuity of the fabric base members can always be ensured.

[0026] Further, by connecting the connecting plate between the embedding plates embedded in both of the connected fabric base members and connecting the embedding plates with bolts, the end faces of the both fabric base members in the connected state are connected. The two cloth base members can be restrained to each other regardless of the direction in which the cloth approaches or moves away.

The effect of restraining the two fabric base members with each other and the effect of transmitting the vertical and out-of-plane horizontal shear forces between the end faces of the fabric base members provide a vertical shear force and an out-of-plane horizontal force. When a shearing force is applied, it is possible to prevent the relative displacement between the vertical direction and the out-of-plane horizontal direction between the two fabric base members.

Further, the gap between the two base blocks can be kept constant by the effect of the embedding plate and the connecting plate restraining the two cloth base members in the opposite direction, so that the manufacturing accuracy of the cloth base members is reduced. If it is high, the fabric foundation members can be installed with high construction accuracy.

[0029] In the second embodiment, the embedding plates of the two cloth base members to be connected to each other are located on the same line on a plane, and the connecting plates are arranged on both sides of the embedding plate. Since the tensile force between the two is transmitted on the axis of the embedded plate, the transmission of the tensile force between the fabric foundation members is ensured, and the embedded plate and the connecting plate may undergo plastic deformation due to the bending moment due to eccentricity. Can be avoided.

The embedding plate is fixed to the foundation beam by embedding an anchor bar welded in the foundation beam portion, and the center line of the embedding plate and the center line of the anchor bar are located on the same line. In Item 3, since the eccentricity does not occur between the embedding plate and the anchor bar due to the tensile force, the tensile force between the cloth foundation members is securely transmitted to both the cloth foundation members, and the anchoring portion to the foundation beam part. In this case, it is possible to avoid a situation in which the embedded plate undergoes plastic deformation.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a connected state of adjacent cloth foundation members.

FIG. 2 is an elevational view showing a cloth base member.

FIG. 3 is a plan view of FIG. 2;

FIG. 4 is a side view of FIG. 2;

FIG. 5 is a side view showing an installed state of the cloth base member.

FIG. 6 is a view taken along line xx of FIG. 5 when mortar is filled between adjacent cloth base members.

FIG. 7 is a sectional view taken along line yy of FIG. 5;

FIG. 8 is a sectional view taken along the line zz of FIG. 5;

FIG. 9 is a perspective view showing an arrangement state of a cloth base member.

FIG. 10 is an exploded perspective view showing a state of connection of an embedding plate.

FIG. 11 is an elevation view showing a connection state of the embedding plate.

FIG. 12 is a plan view of FIG.

[Explanation of symbols]

1 ... fabric base member, 2 ... foundation beam, 21 ... notch, 2
2 ... recess, 3 ... footing, 31 ... recess, 4 ...
Embedding plate, 5 ... anchor bar, 6 ... connecting plate, 7 ... bolt, 8 ... mortar, 9 ... crushed stone, 10
... sand, 11 ... setting plate.

Claims (3)

[Utility model registration claims] 1. A cloth base having a shape divided in a certain unit,
It is a connection structure of a precast concrete fabric foundation member consisting of a foundation beam portion and a footing portion, and an embedded plate is provided at an end surface position of the foundation beam portion where the adjacent fabric foundation members face each other, and a substantially half provided at both end surfaces. It is buried at the upper and lower two places with a part of it being exposed to the circular notch, and the rectangular shape depressed from the end face is located at the end face of the foundation beam part and the footing part except for the embedding position of the embedding plate. Are formed at the upper, middle, and lower portions of the foundation beam portion, and at one portion of the footing portion. The upper and lower portions and both sides in the width direction of the recess portion are relatively convex, and the adjacent cloth foundation members are respectively end faces. A connecting plate having both ends substantially semicircular is straddled between the embedding plates exposed at the substantially semicircular cutout portions provided on both end surfaces, and the connecting plate and the embedding plate are provided at intervals. Bolt connection Coupling structure with both fabric base member of the end face between the mortar in the respective recess, or precast concrete fabric foundation member the concrete is filled are connected to each other are. 2. The precast concrete according to claim 1, wherein both embedding plates of the two fabric base members connected to each other are located on the same plane in plane, and the connecting plates are arranged on both sides of the embedding plate. Connection structure for fabric base members. 3. The embedding plate has an anchor bar welded thereto embedded in the foundation beam and fixed to the foundation beam, and one end of the embedding plate is cut so that an end of the anchor bar can be inserted. The precast concrete according to claim 1 or 2, wherein the notch has an end portion of an anchor bar inserted into the notch portion, and a center line of the embedding plate and a center line of the anchor bar are located on the same line. Connection structure for fabric base members.