JPS5980817A - Connection work of iron bars in deep foundation work - Google Patents

Abstract

PURPOSE:To make the connecting operation of iron bars more efficient and safer by a method in which a lower positioning gauge holding vertical iron bars is set above the port edge of a pit, the vertical iron bars are hung down by a hanging gauge and lowered while being wound with cross bars. CONSTITUTION:A lower positioning gauge 3 holding plural iron bars 2a hung down and inserted at given positions is set above the port edge 1a of a pit 1, and the vertical iron bars 2a are integrally hung down by iron bar hanging gauge 4. The vertical iron bars 2a are bound with wires while being wound with cross bars 2b between the port edge 1a of the pit 1 and the lower positioning gauge 3, and the connected parts are lowered into the pit 1. These operations are orderly repeated on the ground's surface for performing the connecting work of iron bars on the ground's surface.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for connecting reinforcing members in a deep foundation construction method.

Conventionally, the deep foundation construction method involves manually digging a round hole with a diameter of 1.4 to 8.5 m in the ground, and digging it down while blocking the pile.The hole is filled with concrete and the structure is This is the basis.

In addition, for the concrete base 1 and 1st layer, multiple vertical reinforcing bars are placed along the inner edge of the hole. i: Arranged in a ring ′Jh
In addition to rotating these vertical reinforcing bars in the hole, the work involved connecting the horizontal reinforcing bars to the vertical reinforcing bars, which was extremely complicated.

In other words, the work had to be carried out inside the hole, which was narrow and difficult to work with, and objects could fall from above, and in rare cases, gas was generated inside the hole, which was dangerous. The present invention provides a method for connecting reinforcing materials in a deep foundation construction method that eliminates the drawbacks of the above and allows easy, efficient, and safe construction.

An embodiment of the present invention will be described below with reference to the drawings.
Above the OR part of the hole dug in the ground, install a lower Ti determining gauge (3) that inserts and holds multiple vertical reinforcing bars (2a) suspended at predetermined positions, and The vertical reinforcing bars (2 &) of the book are hung together with the reinforcing bar suspension gauge (4), and the vertical reinforcing bars (2 &) are horizontally suspended between the mouth edge (IIL) of the hole (1) and the lower positioning gauge (3). (
2b) Winding with 1. Tie the r pieces with wire and install vertical reinforcing bars (2 &
) and lower the completed part into the hole 2! This work is then repeated on the 111U to perform the connection work on the ground.

To explain the structure of the F positioning gauge (3) as an example, a plurality of steel members (8a) are arranged radially at fixed angles and held at fixed distances from the center of each steel member. are provided, and longitudinal reinforcing bars (2&) are inserted into the holding tubes (8b), so that each longitudinal reinforcing bar (2a) is maintained at a predetermined position.

Further, to explain the structure as an example of the reinforcing bar suspension gauge (4), an annular or square frame (4a) is provided, a reinforcing frame (4a') is provided on these frames (4a), and a lower A p-pull (4b) for suspending the vertical reinforcing bars (2b) is provided at a location corresponding to the position of the holding tube (8b) of the one-loaf determining gauge (3), and a p-pull (4b) is provided at the tip of each rope (4b). Fixing device for temporarily fixing the vertical reinforcing bars (2a) (
4c).

Further, the lower positioning gauge (3) is installed from the bottom of the hole (1), and a construction scaffolding is installed on top of it to the height of the shoulders of workers on the ground.

This invention has the above-mentioned configuration, and the connection work of connecting the vertical reinforcing bars (2a) and the horizontal reinforcing bars (2b) (!J bars) with all the wires can be performed near the edge of the hole on the ground, making the work easier. It can be done efficiently and safely, making it extremely useful9.
play the fruit.

[Brief explanation of the drawing]

FIG. 1 is an explanatory view showing one embodiment of the present invention, FIG. 2 is a sectional view taken along line 1-I in FIG. 1, and FIG. 8 is a sectional view taken along line 1-I in FIG. L... Hole 1a... Edge 21L... Vertical reinforcing bar 2b.
・Horizontal reinforcing bar 8...Lower positioning gauge 4...Rebar suspension gauge. Patent applicant: Kyu-Rebar Co., Ltd. Agent: Takashi Mihara (1 other person)

Claims (1)

[Claims] A lower positioning gauge is installed above the mouth edge of the hole dug in the ground to insert and hold multiple vertical reinforcing bars suspended at predetermined positions, and these multiple vertical reinforcing bars are suspended from the reinforcing bars. Suspend the vertical reinforcing bars together with a gauge, wrap the vertical reinforcing bars with horizontal bars between the edge of the hole and the lower positioning gauge, connect them to the vertical reinforcing bars, lower the connected part into the hole, and then A work method for connecting reinforcing members in the deep foundation construction method, which is characterized by repeating the work and connecting work on the ground.