JP2609259B2 - Construction method of reinforced masonry and vertical and horizontal reinforcement spacers used in this construction method - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to a building method of masonry with break joints and a spacer of vertical and horizontal reinforcing bars used in this building method.

(Prior art) Masonry is excellent in durability, fire resistance, sound insulation and heat insulation, and has been adopted worldwide as a construction method for a long time. However, in Japan, there is a lack of seismic resistance, so it must be reinforced with steel bars according to legal regulations. For this reason, concrete blocks and bricks (hereinafter referred to as masonry units) are provided with cavities vertically and horizontally, reinforcing bars are placed there, filled with mortar or concrete, and masonry units are integrated to obtain earthquake resistance. There is a need to.

In this case, the masonry units are stacked in such a way that the horizontal joints are straight and the vertical joints are shifted by one unit, and the break joints (commonly known as brick stacking) (Fig. 1a) and the vertical joints are straight. There is a potato type (Fig. 1b). The break joint type is a traditional stacking method, and has an elegant appearance, and the vertical concentrated load P is dispersed as it goes downward, so that uneven settlement of the foundation is unlikely to occur. The horizontal streaks are stacked one by one through the space in the masonry unit, and are stacked up by the floor height.The vertical streaks are inserted into the vertical cavity from the top of the wall, and lowered to the lowest masonry unit. Must. However, since the vertical streaks cannot be bound to the horizontal streaks in the cavities of the stacked masonry units, the vertical streaks come into contact with the hole walls and the cover thickness of the reinforcing bar cannot be ensured. In general, reinforcing bars require a cover thickness of 1.25 times the diameter of coarse aggregate and 20 mm or more between the masonry unit and the inner surface of the masonry unit, both in terms of strength and durability. This condition cannot be satisfied by inserting a reinforcing bar. For this reason, at present, it is necessary to embed the vertical streaks as a foundation and to use the potato joint type loading method in which masonry units are stacked in the meantime. This method of stacking potatoes has a drawback in that the appearance is not elegant and the foundation is likely to be settled unevenly. Thus, the reason that reinforced masonry is not widely used in Japan is largely due to the fact that it is not easy to carry out break joint construction.

Reinforced masonry can be used on narrow sites in urban areas, and break joints have an elegant appearance, are earthquake-resistant and fire-resistant, and are construction methods with excellent sound insulation and heat insulation. What is not adopted in modern times is a wasteful thing.

(Objects of the Invention) Accordingly, an object of the present invention is to allow the vertical streaks to be closely contacted laterally in the cavity of the stacked masonry unit,
An object of the present invention is to provide a construction method of a masonry-type masonry with a breakable joint capable of securing a cover thickness between the inner surface of a hollow portion of a vertical streak and a spacer used in the construction method.

(Constitution of the Invention) In order to achieve the above object, according to the present invention, masonry units are arranged side by side on a foundation, a horizontal streak spacer is mounted on the masonry unit, and the horizontal streak is positioned at a predetermined position by the horizontal streak spacer. After repeating and repeating this for each horizontal line of each step, the masonry unit is broken and piled up further in the joint type,
Insert the rebar with vertical bar spacers attached corresponding to the spacing of the horizontal bars into the cavity from the top of the stacked masonry unit, and adhere to the horizontal bars with the help of the vertical bar spacers,
Then, concrete or mortar may be filled in the cavity of the masonry unit.

The spacer used in the construction method of the present invention includes a horizontal streak spacer and a vertical streak spacer. A vertical streak spacer having at least one depression engaging the horizontal streak, and the vertical streak spacer having a vertical streak engagement portion having a depression engaging the vertical streak; and a diagonal outward from the vertical streak engagement portion. And legs extending downwardly.

(Effects of the Invention) In the masonry construction method of the present invention, since the break joint masonry construction method is performed using the spacer as described above, the masonry is constructed after the masonry despite the break joint type masonry. By inserting a vertical streak into the cavity from the top of the stacking unit, the horizontal streak and the vertical streak can be brought into close contact with each other, and the cover thickness with the inner surface of the cavity can be ensured.

Also, the horizontal streak spacer of the present invention can be attached to the web shell of the masonry unit by its legs to support the horizontal streak in the correct position, while the vertical streak spacer is located within the cavity of the stacked masonry unit. The legs that extend obliquely downward when inserted allow the vertical streaks to be drawn into close contact with the already fixed horizontal streaks, and the leg tips have a predetermined covering on the inner surface of the cavity of the masonry unit. The thickness can be secured.

(Examples) Hereinafter, the present invention will be described in detail with reference to examples with reference to the drawings.

FIG. 2 is a perspective view of the masonry unit. Masonry unit 1
Is composed of a face shell 2 forming both side surfaces and two web shells 3 connecting these face shells.

The structure of the spacer for carrying out the construction method of the break-type masonry according to the present invention using these masonry units 1 will be described. FIGS. 3, 4, and 5 show the horizontal streak spacer. The transverse streak spacer 4 connects two forked legs 5, 5 ′, each of which engages across the web shell 3 of the masonry unit 1, and connects these legs and receives the transverse streak 6. And a horizontal streak support portion 8 having two recesses 7 for receiving the same.

6, 7, and 8 show the vertical streak spacer 10. FIG.
The vertical streak spacer 10 has a vertical streak engaging portion 13 having two arc-shaped portions 11 and 12 at both ends to engage with the vertical streak 9, and extends obliquely downward outward from a lower end of the vertical streak engaging portion 13. Two legs 14,
14 '. The free ends of the legs 14, 14 'are bent further downward and most of the legs are rust-proof. In this embodiment, as is clear from FIG. 9, the vertical bar spacer 10 is formed by continuously bending one bar, but the vertical bar engaging portion 13 is formed with circles at both ends of one bar. The arc portions 11 and 12 may be formed by welding, and the legs 14 and 14 'may be welded to the arc portions.

Next, a construction method of stacking masonry units in a jointed manner while arranging them using the vertical and horizontal stripe spacers 4 and 10 having the above structure will be described.

In FIG. 10, the mortar 17 is spread on the foundation 16 and the masonry units 1 are horizontally and horizontally stacked thereon.
The bifurcated legs 5, 5 'of the horizontal streak spacer 4 are fitted over the upper end of the web shell 3 of the masonry unit 1 as shown in FIGS. The horizontal streak 6 is placed on one of the recesses 7 and fixed with a binding wire or the like. The position of the recess 7 of the horizontal streak spacer 4 is
Is located on either side of the center line of the wall thickness
At a distance of at least half the diameter of the shell and at a cover thickness that does not prevent the passage of coarse aggregate from the inner surface of the cavity of the face shell 2, that is, at a position at least 1.25 times the diameter of the coarse aggregate You have to decide to be fixed. The interval at which the horizontal streak spacers 4 are attached depends on the size of the horizontal streak 6, but the interval at which the horizontal streak 6 does not bend significantly (about
800-1200mm). While repeating such operations at each stage, the masonry units are stacked one by one as shown in FIG.

Next, the arc-shaped portions 11 and 12 of the
And fix them by binding them (Nos. 6 and 7).
Figure). As shown in FIG. 14, the vertical stripes 9 are
Are mounted at intervals of several rows of horizontal stripes.

Looking into the cavity from the top of the stacked masonry unit 1, the horizontal streaks 6 overlap each other in a straight line and are slightly eccentric with respect to the center of the width of the cavity. The vertical streak 9 with the streak spacer 10 attached thereto is slowly inserted with the legs 14, 14 'of the vertical streak spacer 10 toward the wider side opposite to the horizontal streak 6, and horizontally at a position slightly higher than a predetermined position. Rotate it by 180 degrees and lower it at the position where the tips of the legs 14, 14 'of the vertical stripe spacer 10 are just above the horizontal stripe 6. When the legs 14 and 14 'hit the horizontal streaks 6, if the hands are released, the weight of the vertical streaks 9 causes the inclined legs 14, 14' of the vertical streak spacer 10 to slide down on the horizontal streaks 6 and descend. ,
The vertical streaks 9 are drawn toward the horizontal streaks 6 and adhere to each other, and the nodes of the deformed reinforcing bars are engaged and fixed in the in-plane and out-of-plane directions. At that time, the lower end of the vertical streak is
Integrated with 18. Further, the open leg portions 14 and 14 'of the vertical streak spacer 10 ensure the minimum cover thickness in the in-plane and out-of-plane directions of the vertical streak.

[Brief description of the drawings]

FIG. 1a is an explanatory view showing how to break the masonry unit of the masonry unit, FIG. 1b is an explanatory view showing how to use the potato joint type of masonry unit, FIG. 2 is a perspective view of the masonry unit, FIG. Fig. 4 is a front view of the horizontal streak spacer of the present invention, Fig. 4 is a side view of the horizontal streak spacer of Fig. 3, Fig. 5 is a plan view of the horizontal streak spacer of Fig. 3, and Fig. 6 is a front view of the vertical streak spacer of the present invention. Fig. 7, Fig. 7 is a side view of the vertical streak spacer of Fig. 6, Fig. 8 is a plan view of the vertical streak spacer of Fig. 6, Fig. 9 is a perspective view of the vertical streak spacer, and Fig. Partial sectional view showing the arrangement of the horizontal streaks and the streaks of the masonry construction method, FIG. 11 shows the vertical streaks and the horizontal streaks arranged by using the spacers by the break joint masonry construction method according to the present invention. FIG. 12 is a view including a partial cross section showing the arrangement, and is a view taken along line bb ′ in FIG. 12, and FIG.
FIG. 13 is a sectional view taken along the line aa ′ of FIG.
FIG. 14 is a horizontal cross-sectional view taken along the line cc ′ in the figure, and FIG. 14 is a view showing a vertical streak with a vertical streak spacer according to the present invention. DESCRIPTION OF SYMBOLS 1 ... Masonry unit 2 ... Face shell 3 ... Web shell 4 ... Horizontal stripe spacer 5,5 '... Bifurcated leg 6 ... Horizontal stripe 7 ... Depression 8 ... Horizontal stripe support part 9 ... Vertical stripe 10 ... vertical streak spacer 11, 12 ... recess 13 ... vertical streak engagement part 14, 14 '... leg

Claims (2)

(57) [Claims] 1. A masonry unit is arranged side by side on a foundation, a horizontal streak spacer is mounted on the masonry unit, and the horizontal streak is supported and fixed at a predetermined position by the horizontal streak spacer. After repeatedly stacking the masonry units one by one in a break joint type, insert the vertical streaks attached with the vertical streak spacers corresponding to the spacing of the horizontal streaks from the top of the stacked masonry units into the cavity, A method of building a masonry with a break joint, characterized in that a vertical streak spacer is used to adhere to a horizontal streak, and then the concrete or mortar is filled in the cavity of the masonry unit. 2. A masonry unit comprising a face shell forming both side surfaces and a web shell connecting these face shells, and a vertical and horizontal reinforcing bar is provided when a construction method of a break joint type masonry is carried out. In a spacer for arranging a bar in an appropriate position, the spacer includes a horizontal bar spacer and a vertical bar spacer, and the horizontal bar spacer includes bifurcated legs on both sides of a web shell of the masonry unit,
A longitudinal muscle support having at least one depression engaging the lateral muscle and connecting the legs on both sides, wherein the longitudinal muscle spacer has a longitudinal muscle engaging portion having a cavity engaging with the longitudinal muscle; And a leg extending obliquely downward and outward from the vertical streak engaging portion.