JP4328230B2 - Construction method to improve earthquake resistance of masonry - Google Patents

Description

  The present invention improves the earthquake resistance of a masonry structure wall mainly composed of bricks, blocks, stones, etc., and prevents the masonry structure from collapsing due to an earthquake or the like. It relates to the method of improving construction.

  For example, in the Middle East, Central and South America, and the like, many houses are used that use a simple masonry wall constructed by stacking bricks, stones, and the like using mortar as a joint material. A house with such an architectural structure often collapses easily even in a relatively weak earthquake, and the entire house often collapses, so the resident often dies under the house. Some surveys show that 1.4 million people have been killed in the Asia-Pacific region during the 90 years of 1900-1990 due to earthquakes, many of which are thought to be due to the collapse of these houses.

In order to prevent the wall from collapsing, a method of increasing the earthquake resistance of the wall itself by fixing a reinforcing bar, a wire mesh or the like along the inner wall or along the wall surface can be considered.
However, there is a problem that increasing the earthquake resistance by using a reinforcing bar, a wire mesh or the like increases the construction cost and increases the construction cost and is difficult to spread widely.

  In view of the above problems, the present invention can prevent a masonry structure wall constructed by stacking bricks, blocks, stones, etc. from easily collapsing due to an earthquake or the like, and the construction cost is also relatively low. The objective is to provide a method for improving the earthquake resistance of masonry construction that is easy to be widely adopted by the general public.

In order to solve the above-mentioned problems, the present invention provides a pair of packing bands made of a strip-shaped olefin resin on both front and back surfaces of a masonry structure wall constructed by stacking bricks, blocks, stones, and the like. The pair of nets is provided by arranging a net so that the band-like surface faces the wall and connecting one end of a plurality of connecting members penetrating the wall to a portion where the olefin resin band intersects A method for improving the earthquake resistance of masonry, which is characterized by connecting them together.

According to such a masonry construction method for improving earthquake resistance, a pair of nets formed of an olefin resin band are connected to each other by a plurality of connecting members penetrating the wall, thereby constituting the wall. The bricks, stones, etc. to be encased by the net-like body. Therefore, even when the wall is greatly shaken by the earthquake, the bricks and the like are not easily separated, and the complete collapse of the wall is prevented. Thus, if the wall can be prevented from being completely collapsed, the house can be prevented from collapsing, and the damage caused by the earthquake can be reduced.
In addition, compared to the case of using reinforcing bars, wire mesh, etc., the processing is easy and the material cost is low, so there is an advantage that it is easy to adopt even in regions that are not economically rich or in technically low levels. .

  Hereinafter, an embodiment of a method for preventing collapse of an existing wall according to the present invention will be described in detail with reference to FIGS.

  FIG. 1 is a front view showing an existing wall as a construction target in one embodiment of the present invention. 2 is a front view showing a state in which a net-like body is attached to the existing wall, and FIG. 3 is a partially enlarged view of FIG.

  As shown in FIG. 1, an existing wall 1 that is a construction target is a wall having a masonry structure in which bricks 3 are stacked using a mortar 2 as a binder, for example. The wall 1 may be not only an outer wall facing the outside of the house, but also an inner wall that divides a room into a room, or may be a wall other than a house.

  In this embodiment, as shown in FIGS. 2 and 3, first, the surface and the back surface of the existing wall 1 are covered with a net 4 formed of an olefin resin band, and then the surface and the back surface of the existing wall 1 are covered. By connecting the pair of nets 4 arranged by connecting members 5 provided so as to pass through the walls at various locations of the existing wall 1, the wall collapse is prevented as much as possible. It is.

  As the olefin resin constituting the olefin resin band, various kinds of polyethylene, polypropylene, and the like can be used. In addition, the band is not particularly limited as long as it is band-shaped, but from the viewpoint of being easily available because it can efficiently cover the wall surface and prevent the jumping out of bricks and the like and is widely spread. A band for use can be suitably used. In particular, a polypropylene (PP) band is more preferable from the viewpoint of high tensile strength and low cost.

As the reticulate body 4, a reticulated body can be used in which the olefin resin bands are arranged so as to be orthogonal to each other. The orthogonal bands are preferably configured so that the shape of the net can be maintained by alternately knitting the upper and lower bands or welding them with heat or the like.
Moreover, it is preferable that the size of the mesh of the mesh-like body 4 is such that bricks, stones, and the like constituting the wall do not pass through.

  When installing the mesh body 4 on the wall 1, as shown in FIG. 2, it is preferable to fix the olefin-based resin band in a direction inclined about 45 degrees. When fixed in such a direction, even when a lateral stress is applied to the wall due to an earthquake or the like, the olefin resin band inclined to either the left or right side relaxes the stress, and the wall 1 collapses. This can be prevented more effectively.

  It is also possible to fix the mesh so that the olefin resin band is in the vertical direction and the horizontal direction. When such a fixing method is adopted, there is an effect that it is easy to process the mesh 4 with an olefin resin band.

  At the upper end and the lower end of the wall 1, it is preferable to fix the end of the mesh body 4 to a jig (not shown). As the jig, for example, a rod-shaped member that can be easily fixed by winding the olefin-based resin band can be suitably used.

  Further, the connecting member 5 is not particularly limited as long as it can connect the mesh bodies 4 to each other, and any member can be used.

The installation location and the number of installation of the connecting member 5 are not particularly limited, and the installation is performed within a range in which the collapsing prevention effect can be obtained in consideration of the strength of the masonry wall to be constructed and the size of the block used. That's fine.
When the wall to be constructed has the structure as described above, a through hole (not shown) is provided in the portion of the mortar 2, the connecting member 5 is inserted into the through hole, and one end and the other end of the connecting member 5 are provided. May be fixed to the mesh body 4 respectively.

  Further, the fixing method of the connecting member 5 and the mesh body 4 is not particularly limited. For example, a method of fastening one end of the connecting member 5 to a portion where the olefin resin band of the mesh body 4 intersects is preferably adopted. Can do.

  When the end of the wall is interrupted or there is an opening in the wall, the mesh body 4 is bent along the edge of the wall and directly connected to the mesh body 4 disposed on the opposite surface side. You may do it.

  Furthermore, in order to keep the aesthetic appearance of the wall, it is possible to coat the mesh body 4 by applying mortar or the like (not shown) from above the mesh body 4 as necessary.

  The wall of the masonry structure that has been prevented from collapsing by the above method has the brick 3 surrounded by the pair of nets 4 connected by the connecting member 5 from both the front and back sides. It is possible to obtain a structure that does not easily fall apart and is not easily collapsed. Further, by preventing the wall from collapsing, the earthquake resistance of the house, which has conventionally been highly likely to collapse, is improved, and the number of casualties due to the earthquake can be greatly reduced.

The construction method for improving the earthquake resistance of masonry construction according to the present invention is a great feature in that it can be easily applied to an existing structure, but the construction object is not limited to an existing structure.
That is, the construction method of the present invention can also be applied when newly constructing a structure, and in that case, the construction becomes easier.

The front view which showed an example of the wall used as construction object. The front view which showed the state which arranged the mesh body on the wall. The elements on larger scale of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Wall used as construction object 2 Mortar 3 Brick 4 Net body 5 Connection member

Claims (1)

A pair of nets formed of a band for packing made of a strip-like olefin resin on both the front and back sides of a masonry structure wall constructed by stacking bricks, blocks, stones, etc. The masonry, which is arranged so as to face each other and connects the pair of nets by connecting one end of a plurality of connecting members penetrating the wall to a portion where the olefin resin band intersects Construction method to improve earthquake resistance.