JPS62182318A - Construction work of bearing plate - Google Patents

Abstract

PURPOSE:To shorten the period of construction work as well as reduce the cost of construction work of a method in which anchor blots are driven into the excavated face of the natural ground, reinforcing bars for forming plates are fixed to the exposures of the anchor bolts, and a fluidous hardener is packed into the bars to form a large-size plate. CONSTITUTION:Anchor bolts 4 are driven into holes formed by drill in the excavated face 2 of the natural ground 1, and reinforcing bars 5 for forming a plate are attached to the exposures 4a of the bolts 4, consisting of reinforcing bars 5a for forming a plate, set in a lattice form, and a netted frame 5b for surrounding. A fluidous hardener 7, e.g., cement mortar, etc., is packed into the bars 5 and also sprayed onto the outside of the frame 5b to bury it in order to form a large-size plate. The hardener is also sprayed to the whole surface of the slope 2 other than the plate.

Description

[Detailed Description of the Invention] [I of the Invention] Objective 1 1. Pull up to ■ υL The present invention is a method for constructing a bearing plate in which a large concrete plate is fixed to an anchor bolt driven into another thread. It is related to.

Conventionally, as a construction method for constructing this type of bearing plate, a slope 11 cut from the ground 10 as shown in FIG. Drill a hole with the drill 12 and drive the anchor bolt 13, then as shown in Fig. 6 (
C)! ．． :As shown, the exposed part 1 of the anchor bolt 13:+a is made of steel plate, wood, or plastic formwork 1
4: +IIs (There was a construction method in which fluid hardening + IIs such as concrete or mortar were poured, and after hardening, the mold was removed to form a large plate 16.

As mentioned above, the conventional construction method uses large, heavy, and difficult-to-handle formwork such as gAFj. 1. Not only is it difficult and time-consuming to move the concrete and attach it to anchor bolts, but it also requires demolding after concrete is poured and hardened, making the construction system complicated and lengthening the construction period. There was a problem.

In addition, there were other problems such as the conventional wooden wall frames being difficult to reuse and the plastic molds being expensive.

Furthermore, with conventional glue (framework), it is necessary to attach a soft material such as rubber to the bottom of the formwork to prevent the flowable hardening material from leaking, and to prevent gaps from forming between the ground and the formwork. However, there were also problems such as the unit cost of the formwork being high and the installation work being complicated.

The present invention was made in order to solve the above-mentioned conventional problems, and its purpose is to provide a bearing plate construction method that can be constructed quickly and inexpensively, shorten the construction period, and reduce construction costs. It is about providing.

[Structure 1 of the Invention A method of constructing a bearing plate according to the present invention for increasing the distance between I and II is to drive anchor bolts into the slope of the ground, the excavated surface of the ground, etc., and reinforce the plate by placing reinforcement in a lattice pattern. A mesh formwork is integrally placed around the reinforcing bars, and the reinforcing bars for play 1, which are made up of one piece, are fixed to the exposed parts of the anchor bolts, and the flow of concrete or mortar is carried out within the plate reinforcing bars. The method is characterized in that a hardening agent is filled and sprayed onto the outer surface of the mesh formwork to form a large plate, and the spraying of the large plate is carried out simultaneously with the formation of the surrounding slopes and other mountains. This method is characterized by spraying the fluid hardening material onto the excavated surface of the ground.

Further, construction (hereinafter, one embodiment of the present invention will be described with reference to the drawings.

In the fpJ1 diagram, reference numeral 1 indicates a ground, a part of which is cut to form a necessary slope 2.

Next, as shown in Fig. 2, the ground 111 is
Drill a hole inside 1 and drive in the anchor bolt 4.

Subsequently, as shown in FIG.
Attach the structural reinforcing bar 5 for the plate to the exposed portion 4a of the plate.

As shown in detail in FIG. 3A, the steel structure N'JJ5 for the brake is composed of plate reinforcing bars 5a and a mesh formwork 51).

The plate reinforcing bars 5a are constructed by arranging reinforcing bars in a lattice shape, and the thickness of the reinforcing bars, the spacing of the lattice, etc. are as follows:
Set as appropriate depending on the ground, soil quality, plate pressure, etc.

On the other hand, the mesh formwork 5b has the plate reinforcing bars 5a.
The reinforcing bars 5a for the plate are constructed by assembling thinner reinforcing bars into a fine mesh or fence shape to form a band-like structure as a whole.
It is constructed by folding it around the periphery. This payoff 1
As a method, for example, as shown in No. 31"3rMl,
The end portions of some of the reinforcing bars of the plate reinforcing bars 5a are bent downward and extended to the bent ends 511', and are integrated with the four metal fittings 6 and 9.

If the length of the bent end 5a' of the plate reinforcing bar 5a is set to approximately 172 mm, which is the height of the mesh formwork 5b, the bent end 5a' and the net Formwork 51)
By simply aligning the lower ends of the plate reinforcing bars 5at and the mesh formwork 51+, the plate reinforcement bars 5at and 51+ can be positioned approximately in the middle.

After fixing the structural reinforcing bars 5 for plates to the anchor bolts 4 as described above, as shown in FIG. 4, a fluid hardening material 7 such as concrete or mortar is sprayed. In this case, as shown in FIG. 5, the fluid hardening material 7 is
In addition to filling the inside of the net-like formwork 51+, it is also sprayed onto the outer surface of the mesh-like formwork 51+ to bury the mesh-like formwork 51J.

Incidentally, as shown in Fig. 5, the flowable hardening material 7 may be sprayed over the entire surface of the slope other than the plate at the same time as the treatment. However, the structural reinforcing bars for plates used in construction method 1 of the present invention are not limited to this, and may have any other shape such as rectangular, circular, or rhombic.

In the above-mentioned embodiment, the construction was explained about the construction on the excavated surface of another mountain, but it is also possible to temporarily construct the stop on the natural slope of the ground, the root excavation surface of the foundation work, etc.

[Effect of the invention 1 (1) Since the lightweight and inexpensive structural reinforcing bars for plates, which are constructed by integrating the mesh formwork with reinforcing reinforcing bars for plates, are used, it is not only easy to carry in and move, but also quick. And it can be easily fixed to an anchor bolt. Mar
Throw away the mesh formwork! Since it is a frame, there is no need to remove the mold after concrete is poured, and the construction period can be significantly shortened. Furthermore, since almost no external force acts on the mesh formwork, a simple structure with low rigidity is sufficient, so it can be provided lightweight and at low cost.

(2) In addition to temporary works such as slopes of the ground, excavated surfaces of the ground, and mountain stops, are there slope works y11 for emergencies such as disaster recovery, and vegetation works? )・can also be combined.

[Brief explanation of drawings]

Fig. 1-fpJ4 is a construction explanatory diagram sequentially explaining the construction method of the present invention, Fig. 3A is a perspective view showing one embodiment of the structural reinforcing bar for a plate, Fig. 3B is a partially enlarged cross section of the structural reinforcing bar for a plate, FIG. 5 is a partially cutaway perspective view of a bearing plate installed on a slope, and FIGS. 6(A) to 6(D) are explanatory diagrams showing a conventional construction method. 1... Earth, 2... Slope, 3 - Drill, 4...
Anchor bolt, 4a... exposed part, 5... structural reinforcing bar for plate, 5a... reinforcing bar for plate, 511...
-Mesh formwork, 6...wire, 7...fluid hardening material.

Claims (2)

[Claims] (1) The above structural reinforcing bars for plates are constructed by driving anchor bolts into the slope of the ground or the excavated surface of the ground, and integrally attaching the mesh formwork around the reinforcing bars for the plates arranged in a lattice pattern. A large plate is formed by fixing to the exposed part of the anchor bolt, filling the structural reinforcement for the plate with a fluid hardening material such as concrete or mortar, and spraying it onto the outer surface of the mesh formwork. Construction method of bearing plate. (2) The fluid hardening material as set forth in claim 1 is characterized in that, at the same time as the spraying formation of the large plate, the fluid hardening material is also sprayed on the slope of the surrounding ground, the excavated surface of the ground, etc. Construction method of bearing plate.