JPS6213507A - Method for building retaining wall of blast furnace hearth - Google Patents

Abstract

PURPOSE:To quickly build a retaining wall of a blast furnace hearth having more than specified strength by installing and fixing a retaining wall consisting of brick panels and a foundation part having fastening metals via mortar onto a floor plate fixed with anchor bolts. CONSTITUTION:The brick panels 1 built to a panel shape having a desired height and the foundation part 2 attached with the fastening metals 6 are integrated to one body by reinforcing materials such as reinforcing bars to constitute the retaining wall 7. The anchor bolts 5 are embedded and fixed to the bed plate 3 of the blast furnace hearth and the mortar 4 is placed on the plate 3. The foundation part 2 is imposed thereon and the foundation part 2 is connected and fixed to the plate 3 by means of the anchor bolts 5 and the metal fitting 6. The retaining wall 7 having excellent durability and safety is thus built on the floor plate 3.

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to a method for constructing a retaining wall in a blast furnace casthouse.

[Conventional technology]

A blast furnace cast bed is provided with a hot metal gutter to form a flow path for flowing hot metal from the blast furnace, and a retaining wall is provided to distinguish the hot metal gutter from the working floor. In most cases, retaining walls were constructed by hand-laying the required number of bricks one by one on site, without using reinforcing materials such as reinforcing steel.

[Problems to be solved by the invention]

However, the conventional retaining wall construction method described above requires construction by hand at the site, so it cannot be completed in a short period of time and requires a high level of skill. Furthermore, since reinforcing materials such as reinforcing bars were not used, bricks often peeled off or shifted, and due to lack of lateral pressure strength, they collapsed, requiring frequent repairs, which posed safety problems.

[Means to solve the problem south]

The inventors of the present invention have conducted various studies to solve the above problems, and have found that these problems can be solved by fixing anchor bolts to the floor plate of the blast furnace casthouse, and then setting the desired height for the retaining wall in advance. Brick panels are assembled and erected, and a foundation with fasteners fixed to the lower end is integrally provided, and this is installed using a crane or the like on a floor covered with mortar, and the above-mentioned fasteners and the above-mentioned They discovered that the problem could be solved by fixing the problem with an anchor bolt, and completed the present invention. That is, in the present invention, anchor bolts are fixed to the floor plate of a blast furnace casthouse, and then the brick panels are assembled in advance into a panel shape at a desired height, and the foundation part with fasteners is integrally installed at the lower end of the brick panel. Provided is a method for constructing a retaining wall for a blast furnace casthouse, characterized in that the retaining wall is constructed by installing the retaining wall using a crane or the like on a bed plate on which mortar has been cast, and fixing the fasteners and anchor bolts. Hereinafter, the method for constructing a retaining wall for a blast furnace casthouse according to the present invention will be explained using the drawings. Figures 1 and 2 show the retaining wall for a blast furnace casthouse constructed by the method of the present invention, respectively. FIG. 3 is a front view of an embodiment of a retaining wall for a blast furnace casthouse constructed by the method of the present invention, and FIG. 4 is a cross-sectional view of an embodiment of a retaining wall for a blast furnace casthouse constructed by the method of the present invention. This is an explanatory diagram of the structure of an example. In the drawing, 1 is a brick panel constructed by assembling brick blocks into a panel shape of a desired height for retaining, and 2 is a foundation part integrally provided at the lower end of this brick panel 1. The brick panel 1 and the foundation part 2 are integrated using reinforcing materials such as reinforcing bars as shown in Fig. 4. 3 is the floor of the blast furnace casthouse where the brick panel 1 and the foundation part 2 are installed. A board, 4 is mortar placed on the floor board 3 to adhesively fix the floor board 3 and the foundation part 2, 5 is an anchor bolt embedded and fixed in the floor board 3, and 6 is the foundation part 2 and It is a fastener for connecting and fixing the anchor bolt 5, and is fixed in advance to the foundation part 2. 7 consists of the brick panel 1 and the foundation part 2, and the mortar 4.
This is a retaining wall fixed on the floor M3 by anchor poles h5 and fasteners 6, and the structure of this retaining wall 7 is as shown in Fig. 4 in terms of durability, transportability, and stability. is desirable. 8 is a filling material such as granulated slag that is filled on the back side of this retaining wall 7, and 9 is a hot metal gutter for draining hot metal from the blast furnace. It is provided on the installed gutter flooring material 10. [Example] (Example 1) Figure 1 is a side sectional view of one example of the method of the present invention, and L(
7) In this example, a retaining wall 7 consisting of a brick panel 1 and a foundation part 2, which had been previously prepared elsewhere, was suspended by a crane or the like and moved to the vicinity of the hot metal 1i19 installation site, and was used for adhesion on both sides of the hot metal gutter 9. As shown in FIG. 4, the foundation 2 of the retaining wall 7 is fixed to the fasteners 6 fixed on the floor plate 3 with anchor bolts 5, and the retaining wall A filler material 8 of granulated slag was filled on the back side of the retaining wall 7 to complete the construction of the retaining wall. (Example 2) FIG. 2 is a side sectional view of another example of the method of the present invention, and this example shows an installation method when the floor plate 3 is tilted forward and backward with respect to the retaining wall 7. It is something. In order to erect the retaining wall 7 vertically, the mortar 4 was cast so that the upper surface of the adhesive mortar 4 shown in Example 1 was horizontal, that is, so that its cross-sectional shape was a model. Thereafter, the retaining wall 7 is suspended by a crane or the like, moved and installed on the mortar 4, and the fasteners 6. The structure of the retaining wall was completed by fixing it to the floor plate 3 with anchor bolts 5, and filling the center part of the retaining wall 7 with the back to back sides filled with filler material 8. Incidentally, as a result of embedding a pattern (not shown) made of steel or the like in the mortar 4, stability could be increased. (Example 3) FIG. 3 is a front view of still another example of the method of the present invention,
This embodiment shows an example of installing the retaining wall 7 in a case where the floor plate 3 is inclined in the longitudinal direction of the retaining wall 7. Since it is difficult to cast the mortar 4 in a draft shape as described in Example 2 or to compensate for the slope with a steel wedge, etc., the slope of the floor plate 3 where the retaining wall 7 is to be installed is adjusted in advance. The lower surface of the base part 2 of the retaining wall 7 was prepared according to the measured slope so that the retaining wall 7 could stand upright. In this way, mortar 4 is poured to a uniform thickness on the floor plate 3 at the location where the retaining wall 7 is to be installed, and after the retaining wall 7 is suspended and installed using a crane or the like, the fasteners 6. It was fixed with anchor bolts 5 and the construction of the retaining wall was completed. Effect 1 of the invention As described above, the method for constructing a retaining wall for a blast furnace casthouse according to the present invention is not a method in which bricks are hand-laid one by one on site, but a brick panel is created in advance in another case, and then this brick panel is assembled. Because it is installed on the floorboard, construction time can be shortened on site, and because anchor bolts and fasteners are used, it is possible to create a blast furnace cast bed that has a certain level of strength even if the workers are not particularly skilled. It has great industrial value, as it allows the construction of retaining walls and prevents the retaining walls from collapsing.

[Brief explanation of drawings]

FIGS. 1 and 2 are cross-sectional views of an embodiment of a retaining wall for a blast furnace casthouse constructed by the method of the present invention, and FIG. 3 is a cross-sectional view of an embodiment of a retaining wall for a blast furnace casthouse constructed by the method of the present invention. The front view and FIG. 4 are structural explanatory diagrams of one embodiment of a retaining wall for a blast furnace casthouse constructed by the method of the present invention. 1. Brick panel 2. Foundation 3. Floor plate 4. Mortar 5. Anchor bolt 6. Fastener 7. Retaining wall 8. Filling material 9. Hot metal gutter 10. Gutter bed. material

Claims (1)

[Claims] 1 Fix anchor bolts to the floor plate of the blast furnace casthouse,
Next, a crane or the like is used to install the brick panels, which have been pre-assembled into panels of a desired height, and the foundation with fasteners that are integrally provided at the lower end of the brick panels, onto the floor slab on which mortar has been poured.
The present invention provides a method for constructing a retaining wall for a blast furnace casthouse, which comprises constructing the retaining wall by fixing fasteners and anchor bolts.