JP2546918B2 - Joint structure of block structure for foundation construction - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial field of application" The present invention relates to a foundation building block when a precast concrete foundation building block structure preformed in a factory or the like is used to construct a foundation such as a house. The joint structure of a structure.

"Prior Art" As is well known, the foundation of a house was generally formed by pouring concrete on site,
Since the construction has many steps, it was difficult to reduce the construction period and the construction cost.

Therefore, in recent years, by using a block structure for building foundations made of precast concrete that has been preformed in factories at the foundation of houses, etc., and installing this at the construction site as the foundation, labor saving of work at the construction site is achieved. And simplification has come to be achieved.

This block structure has a shape in which the cast-in-place foundation is divided perpendicularly to the longitudinal direction of the foundation, and when connecting multiple block structures in series and joining them to the foundation,
Reinforcing bars extending inward in the longitudinal direction of the block structures to be joined were joined by welding to form reinforcing bars communicating with each other in the foundation.

The foundation is provided in the same manner as the construction of a foundation made of cast-in-place concrete, and a root cutting hole is formed in the ground, and crushed stone is laid on the bottom of this root cutting hole to roll it. A work was established, and concrete was thrown out on this ground work.

“Problems to be solved by the invention” By the way, by manufacturing a foundation as a block structure for foundation construction in a factory or the like in advance, it is possible to save labor in the work at a construction site, but it is embedded in the block structure. In order to weld the reinforcing bars, the tips of the reinforcing bars are projected from the block structure, and the protruding ends of the reinforcing bars are welded to each other.Therefore, a gap for welding is required when connecting the block structures. Therefore, in order to reduce the gap as much as possible and perform welding, a welder or the like is required as a skilled worker, and there is a problem that it is an obstacle to labor saving in the construction of the foundation.

The present invention has been made in view of the above circumstances, and aims at labor saving and simplification of the joining of the foundation building block structures, thereby reducing the construction cost of the foundation and shortening the construction period. It is intended to provide a joint structure of.

[Means for Solving the Problem] The joint structure of the block structure for foundation construction according to the present invention has a foundation fuchin portion mounted on a foundation and an upper portion which is provided on the foundation fuchin portion and becomes a house or the like. In addition to being integrally formed with the rising part for mounting the structure,
By being provided in close contact with each other on the substrate, a joint structure for joining concrete block structures for foundation construction where a foundation having communicating reinforcing bars is formed, and this block structure is A sheath tube horizontally embedded at the end where the block structures are closely attached to each other,
Reinforcing bars that are embedded by penetrating horizontally through the block structure, the central part of which is in close contact with the concrete and the end parts of which pass through the inside of the sheath pipe and project from the joint surface of the block structure, And an injection hole for injecting a liquid solid agent, which is provided on a side surface of the block structure so as to communicate with the block structure. A reinforcing bar protruding from the other sheath tube is inserted into the sheath tube, adjacent reinforcing bars are overlapped in the sheath tube, and the solid agent injected from the injection hole and solidified causes the overlapped reinforcing bars to be inside the sheath tube. It is characterized by being connected.

[Operation] According to the configuration of the present invention, in order to perform the construction of the foundation by using the block structure for foundation construction having the joint structure of the present invention, first, a root cutting hole is provided in the construction site, and the root cutting is performed. A groundwork is set up at the bottom of the hole, and a foundation is set up in this groundwork. Then, the block structure is closely attached and continuously arranged on the base. At this time, a reinforcing bar that passes through the inside of the sheath pipe horizontally embedded at the end of the block structure and protrudes from the end face of the block structure is inserted into the sheath pipe of the adjacent block structure. The rebars of adjacent block structures are overlapped inside the sheath tube. Then, a liquid solidifying agent is injected from an injection hole formed in the side surface of the block structure. This allows the reinforcing bars to be easily and firmly connected to each other by firmly solidifying the solidifying agent without the need for welding to connect the reinforcing bars to each other as in the conventional case. Reinforcing steel bars are laid inside the foundation consisting of the block structure.

[Example] An example of the joint structure of the block structure for foundation construction of the present invention will be described with reference to Figs. 1 to 4.

FIG. 1 shows a block structure 1 used in the present invention.

The block structure 1 is made of precast concrete, and in the inside thereof, reinforcing bars 2 and 3 having a central part in close contact with concrete are embedded in the longitudinal direction of the foundation fuchin part 1a and the rising part 1b. . A cylindrical sheath tube 5 having one opening opened to the outside and the other closed by concrete of the block structure 1 is embedded in the end portion 4 of the block structure 1 in the longitudinal direction. The central portions of the reinforcing bars 2 and 3 are in close contact with the concrete of the block structure 1, and the terminal portions thereof pass through the inside of the sheath tube 5 and project from the joint surface 4a.

An injection hole 6 that communicates with the inside of the sheath tube 5 is formed on the side surface of the block structure 1. This injection hole 6
A liquid solidifying agent such as a grout material is injected into the inside of the sheath tube through the opening.

In the figure, reference numeral 7 is a block connecting bolt 7 having threaded portions formed at both ends. The block connecting bolts 7 are inserted into the bolt holes 8 of the adjacent block structures 1 and fastened at both ends using the nuts 10 from the opening 9 to fix the block structures 1 to each other. .

In order to construct a foundation using the block structure 1 having the above structure, first, a root cutting hole is provided on the construction site, a ground work is provided at the bottom of the root cutting hole, and the foundation 11 is added to this ground work. Set up. Then, the block structures 1 are arranged and placed on the foundation 11 (see FIG. 2). Then, the reinforcing bars 2 that pass through the inside of the sheath tube 5 and project from the joint surface 4a of the block structure 1 are inserted into the inside of the sheath tube 5 of the adjacent block structure 1, whereby the adjacent reinforcing bars 2, 2 and 3, 3 are overlapped inside the sheath tube 5. In parallel with this, the block connecting bolts 8 are inserted into the bolt holes 8 of the adjacent lock structures 1 and the both ends of the block connecting bolts 8 are tightened with the nuts 10 from the openings 9 to connect the block structures 1 to each other. Is fixed (see FIG. 3).

Next, a liquid solidifying agent 12 such as a grout material is injected through an injection hole 6 formed in the side surface of the block structure 1. When the solidifying agent 12 is solidified, the reinforcing bars 2, 2 and 3, 3 in the overlapping sheath tube 5 are firmly bonded (see FIG. 4). As a result, a plurality of block structures 1 are installed closely on the foundation 11, and
A foundation with connecting reinforcing bars is constructed by connecting two and three.

As can be easily understood from the above description, in the present embodiment, the joint surfaces 4a of the block structures 1 are brought into contact with each other and protruded from the other sheath tube 5 inside the one sheath tube 5. Reinforcing bars 2 and 3 are inserted and adjacent reinforcing bars 2, 2 and 3, 3 are overlapped, and solidification agent is injected from the injection hole 6.
By injecting 12, the reinforcing rods 2, 2 and 3, 3 which are overlapped by the solidification of the solidifying agent 12 and are inserted into the inside of the sheath tube 5 can be securely and firmly put together without the need for welding work as in the past. Can be combined with.

[Advantages of the Invention] As described above, according to the joint structure of the block structure for foundation construction of the present invention, the joint surfaces of the block structures are brought into contact with each other, and the sheath of one sheath is inside the other sheath. By inserting the reinforcing bars protruding from the pipe, overlapping the adjacent reinforcing bars, and injecting the solidifying agent from the injection hole,
Without the need for conventional welding work, the reinforcing bars that have been overlapped by the solidification of the solidifying agent and are inserted inside the sheath tube can be reliably and firmly connected to each other, simplifying the joining of block structures and It is possible to save labor and shorten the construction period and construction cost of the construction of the foundation having the communicating reinforcing bars.

[Brief description of drawings]

1 to 4 show an embodiment of a joint structure of a block structure for foundation construction of the present invention, and FIG. 1 is a perspective view showing a configuration of a block structure used in the present invention, Fig. 2 is a front view showing a foundation constructed by connecting block structures in series, Fig. 3 is a front view showing the block structures before being joined, and Fig. 4 is a sheath tube in which a solidifying agent is injected. FIG. 4 is a sectional view taken along the line IV-IV in FIG. 3 showing the opened state. 1 ... Block structure, 2, 3 ... Reinforcing bar, 4 ... End of block structure, 5 ... Sheath tube, 6 ... Injection hole, 12 ... Solidifying agent.

Claims (1)

(57) [Claims] 1. A base fuchin part placed on a base, and a rising part provided on the base fuchin part and on which an upper structure such as a house is placed are integrally formed on a substrate. A joint structure for joining concrete block structures for foundation construction in which a foundation having communicating reinforcing bars is formed by being closely contacted, and the block structure is a block structure. A sheath pipe horizontally embedded in the end portions where the two are closely attached to each other and the block structure are horizontally embedded to be embedded, the central portion is in close contact with concrete, and the end portion is inside the sheath pipe. A reinforcing rod passing through and protruding from the joint surface of the block structure; and an injection hole for injecting a liquid solid agent formed in the side surface of the block structure so as to communicate with the inside of the sheath tube. The joining surfaces of the block structures are brought into contact with each other, the reinforcing bars protruding from the other sheath tube are inserted into the inside of one sheath tube, and the adjacent reinforcing bars are overlapped in the sheath tube, and A joint structure for a block structure for foundation construction, characterized in that superposed reinforcing bars are connected inside a sheath tube by a solid agent injected from an injection hole and solidified.