JPH05118036A - Waling material - Google Patents

Abstract

PURPOSE:To omit the labor hour of the replacement of a waling material and a strut, to shorten the term of work and to reduce cost regarding the waling material as a horizontal member supporting sheet piles in order to obviate the disintegration of soil when the ground is excavated and landslide is protected by the sheet piles. CONSTITUTION:In a waling material as a horizontal member as the timbering of a landslide protection wall, the main body 2 of the waling material is formed of precast concrete while reinforcing reinforcements 3 for a subsurface structure to be constructed are buried into the main body 2. Reinforcements 4 for joints are projected in specified length from the upper and lower surfaces of the main body 2, thus forming the waling material 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bellows raising member which is a lateral member for supporting the sheet pile in order to prevent the soil from collapsing when the ground is cut off and piled up with the sheet pile.

[0002]

2. Description of the Related Art Conventionally, the abdomen uplifting material for mountain retaining is shown in FIG.
As shown in, H-shaped steel 20 was used. And after constructing the concrete frame of the structure in the underground part where the root was cut,
The abdomen 20 and the cutting beam 21 were refilled. Further, the space between the mountain pile sheet pile 22 and the outer wall of the underground structure (a space corresponding to the abdomen uplifting material) is poured into the space for backfilling.

[0003]

However, in the above-mentioned mountain retaining method, since the bellows and timbers are refilled, the construction is complicated and troublesome, and after the bellows are refilled, the sheet pile and the underground are rebuilt. There is a problem that backfilling with the outer wall of the structure is troublesome and expensive. Further, since a space for providing the abdomen is required, the site for the structure is narrowed by that much, and there is a drawback that the site cannot be effectively used because the site is limited especially in a city.

The present invention has been made in view of the above problems, and an object of the present invention is to provide an abdomen uplifting material, which saves the labor of refilling up the abdomen upset material and cutting beams, shortens the construction period, and reduces the cost. To do.

[0005]

The gist of the present invention for solving the above-mentioned problems and achieving the above-mentioned object is to provide a body for pre-casting an abdomen member, which is a horizontal member as a supporting member for a mountain retaining member. Formed with concrete,
It consists in embedding a reinforcing reinforcing bar for an underground structure to be constructed in the main body, and projecting a reinforcing bar for a joint with a predetermined length from the upper and lower surfaces of the main body.

Further, the body of the belly-raising member is provided with through holes for venting air, which penetrate the upper and lower surfaces of the body, and
This is because the lower surface of the main body was inclined to improve the concrete filling efficiency when pouring concrete. The abdomen uplifting material according to claim 1 or 2, wherein one end of the abdomen uprighting material is opened at a side wall of the body and an insert metal fitting for fixing a temporary scaffold is embedded in the body.

[0007]

Since the bellows raising material of the present invention is made of precast concrete, it can be integrated with the underground structure as a part of the outer wall of the underground structure. This eliminates the need for refilling the wadding material.

Further, when the concrete wadding material of the present invention is placed as a part of the outer wall of the underground structure, the body of the wadding material has a through hole for venting air and the lower surface of the body is inclined. As a result, the air between the lower surface of the main body and the concrete upper surface to be cast is not discharged upward through the through hole, and the filling condition of the concrete is improved. Furthermore, if the insert metal fitting for attaching the temporary scaffold is opened at one end and embedded in the main body, the temporary scaffold can be easily attached.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings. FIG. 1 is an enlarged vertical cross-sectional view showing a usage state of the belly rising material of the present invention. 2 and 3 are a front view and a plan view, respectively. In the figure, reference numeral 1 is a belly member, 2 is a main body,
3 is a reinforcing bar, 4 is a reinforcing bar for joints, 5 is an insert hardware,
6 is a sheet pile, 7 is the ground, 8 is a temporary scaffold, 9 is a bolt, 10
Is a nut, 11 is a beam, and 12 is a through hole.

As shown in the best embodiment in FIG. 1, a body 1 of the wadding material 1 of the present invention is made of precast concrete. At this time, the reinforcing bar 3 required as an outer wall for the underground structure to be constructed is buried.

Then, a reinforcing bar 4 for a joint is provided so as to project from the upper and lower surfaces 2a and 2b of the main body 2 by a predetermined length, and a through hole 12 is formed in the upper and lower surfaces 2a and 2b of the main body for venting air. At the same time, the lower surface 2b of the main body 2 is inclined (standing up from the sheet pile 6 side toward the inside) in order to improve the concrete filling efficiency when pouring concrete.

Further, the side wall 2c of the main body 2 of the belly member 1
Then, one end is opened and the insert metal fitting 5 for fixing the temporary scaffold 8 is embedded in the main body 2. The water stop plates 13 and 13 projecting from the upper and lower surfaces 2a and 2b of the main body 2 are provided to prevent groundwater from the ground 7 from entering the underground structure.

When the bellows raising member 1 constructed in this way is used, as shown in FIGS. 2 to 3, the ground 7 is cut off to support the sheet pile 6 by the cutting beam 11 and the bellow raising member 1.
Then, as shown in FIG. 1, the temporary scaffold 8 is fixed to the insert metal piece 5 buried on the side wall 2c side of the main body 2 with bolts 9 and nuts 10. In this way, the reinforcing bars for the underground structure are connected to the reinforcing bars for joints 4 which are projected from the abdomen 1 by connecting means such as a coupler to arrange them.

Next, the sheet pile 6 is used as one formwork, the other formwork is assembled, and concrete is poured into the space 14 shown in FIG. When the concrete for constructing the outer wall of this underground structure is poured, the upper end surface of the concrete filled in the space 14 comes into contact with the lower surface 2b of the swelling member 1 and the lower surface 2b is inclined. Air between the upper end surface of the inside concrete and the lower surface 2b is discharged upward from the through hole 12, so that the space 14 can be satisfactorily filled with concrete without generating voids.

After the cast concrete exhibits a predetermined strength, the form is disassembled, and the sheet pile 6 used as one form is pulled out and diverted to another place. Thus, the outer wall of the underground structure is formed.

As a method of providing the joint reinforcing bar 4 on the body 2 of the bellows raising member 1, other than the method shown in FIG.
There is a method shown in FIGS. That is, a cylindrical cast iron sleeve 15 is embedded in the main body 2 in the vertical direction, and both ends thereof are opened. Then, the vertical streaks 16 are inserted into the sleeve 15 from both the upper and lower sides of the sleeve 15 to make a butt joint, and the sleeve 16 is fixed with a high-strength grout material. Reference numeral 17 indicates a temporary bracket.

Further, as shown in FIG. 5, the sleeve 18 is embedded in the main body 2 by opening both ends thereof, and the vertical stripes 19 are inserted into the sleeve 18 so that a predetermined length is projected from the main body 2.
After that, grout may be filled and fixed.

[0018]

As described above, the wadding material of the present invention is such that the body of the wadding material is formed of precast concrete, and the reinforcing bar for the underground structure to be built is embedded in the body. Since the reinforcing bars for the joints are projected from the upper and lower surfaces of the main body with a predetermined length, the bellows material can be a part of the underground structure, so that the bellows material does not need to be refilled and further backfilling of concrete etc. No work is required, and the cost and construction period are reduced.

According to the second aspect, since the through hole for venting air is provided and the lower surface of the main body is inclined, the filling condition of the concrete becomes good.

Further, according to the third aspect, the temporary scaffold can be easily fixed to the side wall of the abdomen member, the work efficiency of scaffold assembly can be improved, and the construction period can be shortened.

[Brief description of drawings]

FIG. 1 is a partially enlarged vertical cross-sectional view showing a usage state of a belly rising member of the present invention.

FIG. 2 is a front view showing a usage state of the belly rising member of the present invention.

FIG. 3 is a plan view of the same.

FIG. 4 is an explanatory diagram showing another embodiment.

FIG. 5 is an explanatory view showing another embodiment of the present invention.

FIG. 6 is a front view showing a use state of a belly rising member according to a conventional example.

[Explanation of symbols]

1 Bellows, 2 Main body, 3 Reinforcing bars, 4 Reinforcing bars, 5 Insert hardware, 6 Sheet piles, 7 Ground, 8
Temporary scaffolding, 9 bolts, 10 nuts, 11 beams, 1
2 through holes.

Claims (3)

[Claims] 1. In a waving material which is a horizontal material for supporting a mountain retaining structure, the body of the waving material is formed of precast concrete, and a reinforcing steel bar for an underground structure to be built is embedded in the body. Then, a bellows waving member characterized in that a reinforcing bar for a joint is projected from the upper and lower surfaces of the main body by a predetermined length. 2. The body of the bellows raising member is provided with through holes for venting air through the upper and lower surfaces of the body, and the lower surface of the body is inclined to improve concrete filling efficiency during concrete pouring. The abdomen rising material according to claim 1, which is characterized in that 3. The bellows wadding material according to claim 1, wherein one end of the body of the bellows waker is opened and an insert metal fitting for fixing a temporary scaffold is embedded in the body. ..