JPS62202120A - Removal of aperture between pile and waling member - Google Patents

Abstract

PURPOSE:To easily remove the aperture between a pile and a waling member by a method in which a netted formwork is inserted and fixed in the space between the pile and the waling member and concrete is placed into the netted formwork. CONSTITUTION:A waling member 7 is set horizontally between piles 6 driven into the ground and they are connected by welding. A U-shaped netted formwork 1 is inserted into the space between the pile 6 and the waling member 7 and a hook 15 is coupled with the flange of of the waling member 7. Concrete 3 is then placed into the space formed by the formwork 1, the pile 6, and waling member 7. The aperture to be produced between the piles 6 and the waling member 7 can thus be easily removed.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a method for eliminating the gap between a pile body and an upholstery.

<Conventional technology> For example, when employing the pile construction method, rigid uprights are placed horizontally on each pile body made of H-shaped steel etc. driven into the ground, and each pile body is integrated. The planned shoring will be used.

By the way, it is very difficult to drive the piles with their front surfaces aligned on the same plane because the piles tend to be bent and press-fitted.

Therefore, the distance between the front surface of each pile body and the upright timber often varies.

If the gap between the pile body and the upholstery material is left as it is, the pile body will receive the soil and tilt, causing various problems.

Therefore, in the past, the following packing material was interposed in the gap between the pile body and the upright material to eliminate the gap.

Kui> Packing material made by filling concrete into a flexible bag placed between the pile body and the upholstery.

〉A concrete material that is formed by pouring concrete into a paper formwork that is assembled between the pile body and the upholstery material.

Problems to be Solved by the Present Invention> The above-described method for eliminating the gap has the following problems.

(b) It takes a lot of time and effort to set up and remove the flexible bag and paper formwork, and the workability is poor.

(b) Since concrete undergoes drying shrinkage when it hardens, both methods require measures to prevent falls, such as installing metal fittings.

As a result, fall prevention work is expensive and time-consuming.

(c) If there is insufficient work to prevent the packing material from falling, there is a risk that the packing material will fall, which is very dangerous.

(d) In the case of flexible bags, the circumferential surface of the bag becomes rounded when filled with concrete, so the contact surface between the bag and the upholstery or between the bag and the piles should be carefully maintained. cannot be secured.

Therefore, the reliability of the contact area with the pile body or uphill material is low.

(E) When concrete is poured, whether it is a flexible bag or paper formwork, it expands laterally and cannot maintain a specific, consistent shape.

As a result, the aesthetic appearance is impaired.

Purpose of the present invention The present invention was made to solve the above-mentioned problems, and its purpose is to provide the following method for eliminating the gap between the pile body and the upright material. .

(a) A method for eliminating the gap between the pile body and the pile material, which makes it easy to install and remove the pile material without requiring any work to prevent the pile material from falling.

(b) A highly safe method of eliminating the gap between the pile body and the uphill timber by reliably preventing the fall of the pile material.

(c) A method for eliminating the gap between the pile body and the pile material, which can ensure a sufficient pressure receiving area with the pile material.

(d) A method for eliminating the gap between the pile body and the upholstery that is aesthetically pleasing.

Configuration of the Present Invention> An embodiment of the present invention will be described below with reference to the drawings.

First, the mesh formwork that constitutes the packing material will be explained.

Kui〉Net formwork As shown in Fig. 1.2, the net formwork 1 is placed in the gap created between the pile body 6 driven into the ground and the upright timber 7.
It is a rigid body for supporting concrete 3, which is a backfilling material.

The mesh formwork 1 has three sides, a bottom surface 11 and a side surface 12 formed as an extension of the bottom surface 11, and has mooring means capable of mooring to the upright material 7.

[Reinforcement bar 1 Specifically, two steel bars etc. are bent into a U-shape to form reinforcement bar 13.
form.

Then, these two reinforcing bars 13 are arranged in parallel, and the reinforcing bars 1
A belt-shaped mesh 14 is pasted between the reinforcing bars 3 and the bottom surfaces of the reinforcing bars.

[Mesh] As the mesh 14, for example, a known wire mesh or the like can be used, and the size of the mesh is selected so as to prevent the concrete 3 from easily flowing out.

As other materials for the mesh 14, for example, expanded metal, lath, resin plate, copper plate without holes, resin plate, etc. can be used.

[Mooring Means] As a means for mooring to the upright member 7, for example, one end of both reinforcing bars 13 is folded back to form a hook 15.

In this embodiment, a case will be described in which the mesh formwork 1 is provided with strength in the reinforcing bars 13, but if the mesh 14 itself is provided with strength, hooks 15 are separately attached to the reinforcing bars 13.
3 can be omitted.

Further, the boundary portion between the bottom surface 11 and the side surface 12 may be formed to be bendable, so that it is configured in a foldable manner.

Means for adjusting the width of the mesh formwork One of the features of the formwork 1 according to the present invention is that the length of the mesh 14 in the width direction can be adjusted.

The reason why the width of the shaping frame 1 is adjustable is because the distance between the pile body 6 and the upholstery 7 is not constant, so the width of the shaping frame 1 is extended in accordance with changes in this distance. There is no point in dealing with it.

To extend the width of the shaping frame 1, for example, an extension net 2 as shown in FIG. 2 can be used.

This extension net 2 is formed in the same U-shape as the adjustment form frame 1, and is used by overlapping one side with the extension net 2, and the amount of protrusion of the extension net 2 protruding from the end surface of the adjustment form frame 1 can be freely adjusted. and use it.

Next, we will explain how to use the shaped frame using the Yamadome construction method as an example. (Figs. 3 and 4) (1) To install the formwork, horizontally arrange upholstery members 7 such as H-beam steel between each pile body 6 driven into the ground.

Then, welding is performed between the upright material 7 and the pile body 6 that is in contact with it.

The forming frame 1 having the above-mentioned structure is inserted into a place where the pile body 6 and the upholstery 7 are apart, and the hook 15 is moored to the flange portion of the upholstery 7.

As a result, an open-top independent space is formed at the location where the gap occurs by the bottom surface 11 and both side surfaces 12 of the shaping frame 1 and the facing surfaces of the upright material 7 and the pile body 6.

Further, when the gap is wider than the width of the shaping frame 1, the extension net 2 is used to extend the width of the shaping frame 1 by a predetermined length.

In addition, when mooring the form frame 1, the facing surfaces of the pile body 6 and the upholstery material 7 are covered with a sheet material in order to insulate them from the concrete 3 (in some cases).

(2) Placing concrete Next, concrete 3 is poured from the top of the formwork 1.

The poured concrete 3 is housed inside with the net surfaces of the conditioning formwork 1 and the extension net 2 and the opposing surfaces of the pile bodies 6 and uprights 7 serving as formwork surfaces.

Since the weight of the concrete 3 is supported by the upholstery 7 via the hooks 15, there is no fear that the concrete 3 will fall together with the forming frame 1.

Concrete 3 is poured into each formwork 1 to form a packing material 4.

In addition, as shown in FIG. 2, a stopper 5 is provided to prevent the upper opening of the forming frame 1 from expanding or contracting when concrete 3 is poured.
may be placed.

By mooring the stopper 5 while straddling the upper portions of both side surfaces 12 of the shaping frame 1, the opposing distance between the both side surfaces 12 can be maintained constant.

(3) At the time of removal When the prescribed construction work is completed and the uphill timbers 7 are removed,
The molding frame 1 integrated with the hardened concrete 3 is pulled upward and the packing material 4 is removed.

When removing the packing material 4, if the facing surfaces of the pile body 6 and upright material 7 are insulated by covering them with a sheet material in advance, the packing material 4 can be easily separated from the concrete 3.

Effects of the Present Invention> Since the present invention is as explained above, the following effects can be obtained.

(b) The formwork that accommodates the concrete is moored to the upright timbers.

Therefore, since the packing material can be reliably supported while the shaping frame is moored to the upright material, falling of the packing material can be reliably prevented without any need for fall prevention work as in the past.

Therefore, the safety of the construction environment is improved.

(b) Since it is easy to install and remove the formwork, it is possible to install a large amount with little effort, and it is significantly easier to install than conventional methods that use flexible bags or paper formwork. improves.

(c) By using an extension net and a fixed size adjustment frame,
The width of the shaping frame can be easily extended according to the length of the gap.

(d) Concrete constituting the packing material is cast with the facing surface of the pile body and upright material as the formwork surface.

Therefore, a sufficient contact area between the pile body and the upholstery material can be ensured.

(e) By forming the formwork for pouring concrete with a mesh, excess water in the concrete is quickly drained through the holes in the mesh.

Therefore, the concrete becomes denser and the reliability of the compressive strength increases.

(f) Chiseling work before dismantling the struts can be omitted.

(g) Since the molding frame can be manufactured into a fixed shape, it can be mass-produced and is also easy to manufacture.

(h) The concrete to be poured is surrounded by the rigid formwork surface and formed neatly, resulting in excellent aesthetics.

[Brief explanation of drawings]

1st N: Explanatory diagram of one embodiment of the present invention Figure 2; Explanatory diagram of the tone frame Figure 3.4: Illustration of construction method

Claims (1)

[Scope of Claims] When mounting horizontally on each pile driven into the ground as shoring for earth retaining, a gap is created between the pile body and the pile and the facing pile surface between the pile and the pile. , A U-shaped mesh formwork having a mooring means is moored and arranged to the upright material, and then a backing is placed in the space surrounded by the formwork surface of the net formwork and the opposing pile surface of the pile body and the upright material. A method to eliminate the gap between the pile body and upholstery material by filling it with filler material.