JPH10121491A - Assembly engineering method for foundation beam reinforcement - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an assembly engineering method of foundation beam reinforcements capable of saving labour and construction cost by replacing a reinforcement scaffold with a reinforcement cage for pile head reinforcement, reducing a material and eliminating installation and removal. SOLUTION: A large diametrical reinforcement is arranged on a vertical reinforcement by using a reinforcement cage (a) to reinforce a pile head of a hollow foundation pile K driven in the foundation, and a dropping preventive reinforcement 8 to prevent dropping of the reinforcement cage with the pile head supported in the middle of the reinforcement cage (a) is arranged. Thereafter, the reinforcement cage (a) is inserted into the pile head of the hollow foundation pile D, a T type reinforcement support fitting (b) is fixed on the large diametrical reinforcement at a constant level, an on-beam main reinforcement 17 is placed and arranged on a steel pipe 14 of a T type horizontal part and a tommy reinforcement of the same T type reinforcement support fitting (b), and a stirrup 18 and an inder-beam main reinforcement are arranged in order.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for assembling a foundation beam reinforcing bar for arranging a reinforcing beam using foundation piles in a construction work.

[0002]

2. Description of the Related Art Conventionally, assembling a reinforcing bar of a foundation beam in a construction work is performed as follows. (B) A so-called rebar scaffold for assembling beam rebars using scaffold steel pipes in a grid pattern in the assembling range of the foundation beam is assembled, and upper beams are supported on the scaffolds, and the stirrups and lower bars are arranged. Assembling is performed in order, and when the assembling is completed, the scaffold is disassembled.

(B) A T-shaped rebar assembling jig is used at the center in the beam assembling direction. The T-shaped rebar assembling jig is embedded with a base at the bottom and fixed with metal fittings or concrete nails, and the T-shaped rebar assembling jig is erected. It is mounted and installed, and then assembled in the same procedure.

[0004]

However, the above prior art has the following problems. In the case of the above (a), in the case of the reinforcing steel scaffolding, the scaffolding is widened, and the loading and unloading of materials and labor costs are increased. In the case of (b), when fixing the embedding jig, the base is buried in concrete and fixed, so that the positioning and level measurement are complicated. In addition, even if the load is eccentric or impact is applied to the abandoned concrete with concrete nails or the like, the fixed portion is loosened and unstable, resulting in lack of safety.

The present invention has been proposed in view of the above-mentioned problems of the prior art, and has as its object to pay attention to a conventional reinforcing bar for reinforcing a pile head.
It is an object of the present invention to provide a method of assembling a foundation beam reinforcing bar using a pile head to replace the reinforcing bar scaffolding with the use of the reinforcing bar cage, to reduce the material and eliminate the work of bridging, to save labor, and to reduce the cost safely and cost.

[0006]

In order to achieve the above object, a method of assembling a foundation beam reinforcing bar according to the present invention comprises:
Utilizing a reinforcing bar that reinforces a pile head of a hollow pile cast in the ground, a reinforcing bar having a large diameter is arranged on a longitudinal bar of the reinforcing bar, and a reinforcing bar supported by the pile head in the middle of the reinforcing bar. The T-bar is fixed to the large-diameter bar by fixing a T-bar supporting bracket at a certain level, and a fall-preventing bar is fixed to the bar to fix the T-bar. The main beam above the beam is placed on the T-shaped horizontal pipe and the kansashi muscle of the support metal, and the bars are arranged, and the stirrup and the main beam below the beam are arranged in this order.

[0007] The present invention also provides a T-shaped rebar supporting metal fitting comprising a T-shaped vertical steel pipe, a horizontal steel pipe, and a kansashi bar having a horizontal steel pipe as a sheath pipe, and a check below the vertical steel pipe. It is configured with bolts attached.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings showing the most preferred embodiments. In FIG. 1, a
Is a reinforcing cage for reinforcing the pile head of the foundation pile K. The reinforcing cage a is a plate-shaped bottom receiving plate 1 which is inserted into the hollow portion k of the pile and receives concrete, and a lower horizontal member 2 is connected via a suspension bolt 3. A fixed hoop 7a is fixed to the lowermost part of the reinforcing bar cage, and a vertical bar 5 having a predetermined diameter (13 to 16 mm) is arranged on the hoop. The hoop 7 is welded to the hoop 7a as a vertical streak 6 of 25 mm), and the hoop 7 is wound so as to surround the vertical streak, and a cylindrical rebar cage is assembled. The hoop is a closed muscle or a spiral muscle.

Further, a multiaxial fall-preventing reinforcing bar 8 is fixed in the middle of the reinforcing bar cage. As shown in FIG. 2, the rebar assembling of the foundation beam is a process of inking a foundation pile, laying a split m, constructing a discarded concrete n, and forming a beam core indicating the beam position. Is completed, then the foundation pile K
The reinforced cage a is inserted into the hollow pile inner cylinder k, and is locked on the outer periphery of the pile head by the fall prevention reinforcing bar 8 of the reinforced cage a.

At this time, as shown in FIG. 4, since the foundation beam core R and the pile core r are eccentric, the large diameter (2
As shown in FIG. 3 (a), the vertical reinforcing bar 6 (2 to 25 mm) rotates the reinforcing bar cage in the direction of the arrow so that the large-diameter reinforcing bar 6 becomes the beam core R. FIG. 3B shows a state in which the pile core and the beam core match. When the foundation beams intersect, the beam reinforcing bars are installed so as to be located at the center of the beam width to be pre-assembled, and the reinforcing bar a is prevented from falling so as to cover the hollow pile k evenly. 8
The fitting metal 10 is fitted to the outer end of the steel bar, and the rebar basket a is fixed to the center position by the grip metal 10.

Next, the T-shaped rebar supporting bracket b is inserted into the large-diameter longitudinal bar 6 of the rebar basket a and fixed at a predetermined height. The T-shaped reinforcing bar support b is a Kansashi bar 1 having a T-shaped vertical steel pipe 13, a horizontal steel pipe 14, and a horizontal steel pipe 14 as a sheath pipe.
The check bolt 16 is mounted below the steel pipe at the vertical portion. Then, the metal fitting has a level previously set on the large-diameter vertical streak 6, and the check bolt 16 is fastened and fixed in accordance with the level.

Next, the main beam reinforcing bar 17 supported by the steel pipe 14 and the kansashi bar 15 at the horizontal portion of the T-shaped rebar supporting bracket b.
Are arranged, the stirrup 18 is arranged, and the main reinforcement below the beam (not shown) is arranged to assemble the foundation beam reinforcement. Further, in a place where the foundation beam is present in the orthogonal direction, the foundation beam reinforcement is assembled by arranging the beam upper reinforcement of the pre-assembled reinforcement, similarly arranging stirrups, and arranging the beam lower reinforcement not shown. .

In the above-described method of assembling the foundation beam rebar, the beam rebar is supported on the foundation pile via the T-shaped rebar supporting bracket b. There is no need to set up and there is no worry of falling down, so it is safe. In addition, this method is particularly effective when foundation piles are cast at equal intervals on a continuous cloth foundation, as in the case of a middle-layer wall-type reinforced concrete structure.

[0014]

According to the present invention, as described above, the upper main reinforcement of the beam reinforcement is placed on the reinforcement cage for reinforcing the pile head by using the foundation pile, and the reinforcement is placed via the T-shaped reinforcement support bracket. , Stirrup,
It is configured so that the lower main reinforcement is arranged and the foundation beam reinforcement is assembled. Therefore, the conventional complicated rebar scaffolding is eliminated, scaffolding materials are not required, and materials and labor are saved.

According to the second aspect of the present invention, the T-shaped rebar supporting metal fitting is formed into a T-shape with a vertical steel pipe and a horizontal steel pipe, and a kansashi bar is inserted into the horizontal steel pipe as a sheath pipe. It has a simple structure with a check bolt attached below it, and is installed using a steel cage that reinforces the pile head, so that attachment and removal can be performed quickly.

[Brief description of the drawings]

FIG. 1 is an assembly view of a reinforcing cage for reinforcing a pile head.

FIG. 2 is a cross-sectional view illustrating assembling of a foundation beam reinforcing bar using a reinforcing bar cage.

FIG. 3 is a plan view showing an installation state of a reinforcing bar cage with respect to a beam core, and is a diagram viewed from an arrow in FIG. 1; (A) shows a situation where the pile core and the beam core are shifted, and (b) shows a situation where the pile core and the beam core are the same.

FIG. 4 is a perspective view of a pile head showing a relationship between a foundation pile and a beam core.

5 (a) is an enlarged sectional view of a pile head for explaining attachment of a grip fitting for fixing a reinforcing bar to a pile head, and FIG. 5 (b) is an enlarged sectional view of a pile head. FIG.

[Explanation of symbols]

 K foundation pile R foundation beam core a reinforced cage b T-shaped rebar support bracket k pile hollow part m split chestnut industry n abandoned concrete r pile core Hoop 8 Fall prevention reinforcing bar 10 Grip hardware 13 Vertical steel pipe 14 Horizontal steel pipe 15 Kansashi bar 16 Check bolt 17 Beam main bar 18 Stirrup

Claims (2)

[Claims] 1. A reinforcing bar for reinforcing a pile head of a hollow pile cast in the ground, a reinforcing bar having a large diameter is arranged on a longitudinal bar of the reinforcing bar, and a pile head is provided in the middle of the reinforcing bar. A fall prevention rebar which is supported to prevent the rebar cage from falling is fixed and the rebar cage is inserted into the pile head of the hollow pile, and a T-shaped rebar support bracket is fixed to the large-diameter rebar at a certain level. , T-shaped T-bar support bracket
A method of assembling a reinforcing beam for a foundation beam, characterized by placing an upper main beam on a horizontal pipe and a kansashi bar and arranging the reinforcing bar, and then arranging a stirrup and a main bar below the beam in this order. 2. The T-shaped rebar supporting bracket is formed as a kansashi bar having a T-shaped vertical steel pipe, a horizontal steel pipe, and a horizontal steel pipe as a sheath pipe, and a check bolt is provided below the vertical steel pipe. The method of assembling a foundation beam reinforcing bar according to claim 1 to be worn.