JP7333594B2 - Earthquake-resistant building structure - Google Patents

Description

TECHNICAL FIELD The present invention relates to an earthquake-resistant building structure that prevents concrete buildings from being damaged by lateral vibrations such as earthquakes.

In concrete buildings, in order to prevent damage to concrete buildings due to lateral vibrations such as earthquakes, earthquake-resistant slit members made of highly flexible materials (such as polystyrene Form) is interposed to absorb the displacement and deformation (shake) of the walls and columns caused by the rolling during an earthquake.

The earthquake-resistant slit member used in such an earthquake-resistant building structure is interposed between the column and the wall using the process of placing concrete in a concrete building.
In many cases, during the concrete placing process, a synthetic resin frame member is fitted between both sides of the earthquake-resistant slit member in the width direction and the ridges provided on the inner surface of the formwork for placing concrete. After the earthquake-resistant slit member is held at a predetermined position in the formwork, concrete is poured into the slit member so that it is interposed between the column and the wall made of concrete mass (see Patent Document 1. ).

Patent No. 3921122

Recently, it is not uncommon for earthquakes to occur on a scale and frequency that exceed expectations.
By the way, depending on the scale of the earthquake, there is a possibility that the lateral shaking (vibration) of the walls and columns may occur beyond the assumption of the seismic slit members.
In such a case, the frame member holding the sides of the earthquake-resistant slit member may not be able to withstand the stress caused by the rolling motion and may be damaged.

In particular, when a frame member placed on the outside of a concrete building is damaged, rainwater from the outside (outside air) of the concrete building penetrates inside through the damaged part of the frame member and affects the concrete mass. There is concern that rainwater may enter the concrete building (rain leakage).
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an earthquake-resistant building structure that can prevent rainwater from entering due to damage to frame members caused by rolling of adjacent concrete masses.

An aspect of an earthquake-resistant building structure according to the present invention is an earthquake-resistant building structure in which an earthquake-resistant slit member is interposed between adjacent concrete blocks in a concrete building, and the earthquake-resistant slit member has a width of the earthquake-resistant slit member It has a frame member that is inserted into each side part on both sides of the direction and holds the earthquake-resistant slit member when concrete is poured. A waterproof member is provided between the outer surface of the member in the width direction and the inner surface of the frame member facing the outer surface so as to fill the gap , and the concrete building extends through the earthquake-resistant slit member, A bar member whose ends are connected to the concrete masses on both sides of which the earthquake-resistant slit member is sandwiched, and a sac member which is inserted halfway into one end of the bar member and is embedded in the concrete mass. (Claim 1).

Preferably, the waterproof member is made of a waterproof sheet, and is interposed between the end surface of the side portion of the earthquake-resistant slit member and the inner surface of the frame member facing the end surface. This allows a simple structure (claim 2) .

According to the present invention, when an earthquake-resistant slit member between adjacent concrete blocks is greatly deformed due to the lateral shaking vibration of an earthquake, and the frame member on the side of the earthquake-resistant slit member is damaged, rainwater from the outside of the concrete building will intrude into the concrete block through the damaged portion of the frame member. At this time, since the waterproof member is provided between the side outer surface of the earthquake-resistant slit member and the inner surface of the frame member facing the outer surface, it is possible to prevent rainwater from entering from the damaged portion of the frame member.

Therefore, it is possible to prevent rainwater from entering due to damage to the frame member caused by the rolling of the adjacent concrete blocks .
In addition, an earthquake-resistant slit member, a bar member extending through the earthquake-resistant slit member and having each end connected to the concrete blocks on both sides of the earthquake-resistant slit member, and one end of the bar member inserted halfway. By combining a structure having a sack member embedded in a mass of concrete and a waterproof structure using a waterproof member, it is possible to further improve earthquake resistance (claim 1).
In addition, if a waterproof sheet is used as the waterproof member and is interposed between the side end face of the earthquake-resistant slit member and the inner surface of the frame member, the waterproof construction is performed on the side of the earthquake-resistant slit member and the inner surface of the frame member. It is only necessary to insert a waterproof sheet between them, and construction is simple (claim 2).

BRIEF DESCRIPTION OF THE DRAWINGS The perspective view explaining the earthquake-resistant building structure used as the aspect which concerns on the 1st Embodiment of this invention. 1(a) is a plane cross-sectional view of the earthquake-resistant slit member and frame member in FIG. 1(a) taken along line AA, and (b) is a plane cross-sectional view enlarging the main part. FIG. 2 is an exploded perspective view of the seismic slit member, the frame member, and the waterproof member (waterproof sheet). FIG. 4 is a cross-sectional plan view for explaining lateral vibration absorption brought about by the earthquake-resistant slit member. FIG. 10 is a cross-sectional plan view for explaining an earthquake-resistant building structure that is a main part of a mode according to a second embodiment of the present invention; FIG. 4 is a cross-sectional plan view for explaining lateral vibration absorption provided by a bar member and a sack member;

The present invention will be described below based on a first embodiment shown in FIGS. 1 to 4. FIG.
FIG. 1(a) shows a part of a concrete building, for example, a concrete column 1 (corresponding to a concrete block of the present application) which becomes an outer wall of the concrete building, and a concrete wall 3 connected to the column 1. (Part: corresponds to the concrete mass of the present application)).
An earthquake-resistant building structure 5 is used for the outer wall of this concrete building. The earthquake-resistant building structure 5 is constructed, for example, by inserting an earthquake-resistant slit member 7 called a vertical slit between the column 1 and the wall 3, extending in the height direction of the column 1 and the wall 3. . Incidentally, the earthquake-resistant slit member 7 is made of a highly flexible member such as a strip-shaped member made of polystyrene foam.

This seismic-resistant slit member 7 is interposed between the column portion 1 and the wall portion 3 by using the step of placing concrete. Therefore, a pair of frame members 13 for supporting the earthquake-resistant slit member 7 on the inner surface of the formwork 11 (consisting of the outer frame 11a and the inner frame 11b) is provided on both sides of the earthquake-resistant slit member 7 in the width direction.
Each frame member 13 is made of a hard synthetic resin material as shown in FIGS. 2(a), 2(b) and 3, for example. Specifically, the frame member 13 is formed on the inner surface of the inner frame portion 13a having a U-shaped cross section that can be inserted into the side portion of the earthquake-resistant slit member 7, and the outer frame 11a and the inner frame 11b (both of which are the formwork 11). The outer frame portion 13b having a U-shaped cross section which can be inserted into the projected streak portion 11c is composed of a long member in which the back portions of the outer frame portion 13b are butted against each other.

Here, how to interpose the earthquake-resistant slit member 7 will be described. For example, when concrete is poured as shown in FIG. Each frame member 13 is supported by the outer frame 11a and the inner frame 11b by inserting the protrusion 11c of the inner frame 11b and the outer frame 11c. Then, the inner frame portion 13a of each frame member 13 and each side portion (both sides in the width direction) of the earthquake-resistant slit member 7 are fitted and inserted to position (hold) the earthquake-resistant slit member 7 at a predetermined position in the mold 11. .

After that, by pouring concrete into the formwork 11 partitioned by the earthquake-resistant slit member 7, the earthquake-resistant slit member 7 is placed at a predetermined position, the concrete block forming the column 1 and the concrete forming the wall 3. sandwiched between lumps. After placing the concrete, the outer frame 11a and the inner frame 11b are removed, and the recesses (recesses) left by the projections 11c are covered with a backup material 19a or a sealing material 19b.

In this embodiment, only the outer side of the seismic slit member 7 is sealed in order to ensure waterproofness on the outer side of the concrete building, for example. Also, in order to improve the fire resistance of the inner side of the concrete building, a fire resistant member 21 is provided between the inner side portion of the seismic slit member 7 and the inner frame portion 13a.
Among the frame members 13, the frame member 13 arranged on the outer side of the concrete building is provided with a waterproof member, for example, a waterproof sheet 25, which helps when the frame member 13 is damaged.

Specifically, the waterproof sheet 25 is composed of, for example, a band-shaped sheet made of rubber or synthetic resin and having a thickness of about 1 mm as shown in FIG. As shown in FIG. 2(b), the waterproof sheet 25 is arranged on the outer surface of the side portion, for example, the end surface 7a, which is arranged on the outer side of the concrete building, and the inner frame portion 13a (frame member 13) facing the end surface 7a. ) and the bottom surface 13c so as to fill the gap.

That is, the waterproof sheet 25 is interposed between the outer surface of the side portion of the earthquake-resistant slit member 7 and the inner surface of the frame member 13 facing the same side portion.
Of course, the waterproof sheet 25 consists of the end face 7a of the earthquake-resistant slit member 7, the side faces 7b on both sides thereof, the bottom face 13c of the inner frame portion 13a (frame member 13) facing the end face 7a and the side faces 7b, and the inner side faces 13d on both sides thereof. may be interposed between

With this waterproof sheet 25, even if the bottom surface 13c of the frame member 13 on the outer side of the seismic slit member 7 is damaged due to the lateral vibration of the wall 3 (horizontal vibration of an earthquake), the waterproof sheet 25 protects the damaged portion from the damage. The structure is designed to prevent rainwater from entering. In other words, the waterproof sheet 25 cuts off the rainwater intrusion path and prevents the rainwater from entering from the outside to the inside of the concrete building.
Next, operation of the earthquake-resistant building structure 5 will be described with reference to FIGS. 2 and 4. FIG.

For example, suppose an earthquake occurs and the lateral shaking vibration of the earthquake is transmitted to the outer wall of a concrete building. Then, for example, the adjacent column portion 1 and wall portion 3 sway. At this time, the column portion 1 and the wall portion 3 vibrate (displacement, deformation) in the directions of approaching and separating due to the applied stress.
At this time, when the column portion 1 and the wall portion 3 are separated from each other, the earthquake-resistant slit member 7 is deformed in the extending direction to absorb the lateral shaking (not shown). On the other hand, when the column portion 1 and the wall portion 3 approach each other, the earthquake-resistant slit member 7 deforms in the direction of compression as shown in FIGS. do. The frame member 13 is also displaced and deformed following the lateral vibration.

Here, for example, it is assumed that the lateral shaking vibration of an earthquake exceeding assumption is transmitted to the outer wall of a concrete building. At this time, the earthquake-resistant slit member 7 is forced to undergo excessive displacement and deformation due to the stress caused by the lateral shaking of the outer wall.
The frame member 13 may be damaged by the excessive rolling of the outer wall at this time.
For example, when damage occurs at the bottom surface 13c of the outer frame portion 13b as indicated by the “α” point in FIGS. invade. The intruded rainwater affects the outer wall and causes rain leakage.

Here, a waterproof sheet 25 is interposed between the side portion of the earthquake-resistant slit member 7 and the frame member 13 to which the side portion is fitted. That is, even if the bottom surface 13c of the frame member 13 is damaged by installing the waterproof sheet 25 in advance, the damaged portion is blocked by the waterproof sheet 25, thereby cutting off the entry path of rainwater.
Therefore, by interposing the waterproof sheet 25 between the side portion of the earthquake-resistant slit member 7 and the frame member 13, it is possible to prevent the influence of the concrete block and the intrusion of rain water caused by the damage of the frame member 13 caused by the rolling. be able to.

Moreover, since rainwater intrusion can be prevented simply by interposing the waterproof sheet 25 between the side end faces of the seismic slit member 7 and the bottom surface 13c of the frame member 13, construction of waterproofing is simple.
5 and 6 show a second embodiment of the invention.
In this embodiment, in addition to the earthquake-resistant slit member 7, an earthquake-resistant building structure 35 that uses a bar member 31 to prevent vibration of the wall 3 of the concrete building and a sack member 33 that releases the restriction by the bar member 31. is combined with the waterproof sheet 25 (waterproof member) in the first embodiment of the present invention.

That is, in the concrete building, as shown in FIG. and a bar member 31 (for example, made of a reinforcing bar) connected to the wall portion 3 (both of which correspond to the concrete mass of the present application), and an end portion of the bar member 31 on the side of the wall portion 3, which is one end portion of the bar member 31. There is an earthquake-resistant building structure 35 using a sack member 33 inserted and embedded in the wall portion 3 . The sac member 33 is made of, for example, a synthetic resin member, and is slidably placed over the bar member 31 .

In the earthquake-resistant building structure 35, not only is the vibration of the wall 3 suppressed by the bar member 31, but also when the wall 3 and the column 1 approach each other as shown in FIGS. 2, the stress caused by the deflection of the outer wall is also suppressed by inserting the bar member 31 into the sack member 33 with resistance.
By combining the bar member 31, the earthquake-resistant slit member 7, and the waterproof sheet 25, the earthquake-resistant building structure 35 can absorb a large stress while suppressing damage to the concrete building. can be improved. Quite effective.

However, in FIGS. 5 and 6, the same reference numerals are given to the same parts as in the above-described first embodiment, and the description thereof is omitted.
It should be noted that the present invention is not limited to the above-described embodiments, and various modifications may be made without departing from the gist of the present invention. For example, in the above-described embodiment, the waterproof sheet (waterproof member) is applied only to one side of the earthquake-resistant slit member. may

In the above-described embodiment, an example in which an earthquake-resistant slit member is provided between a pillar and a wall has been given, but the present invention is not limited to this. The present invention can also be applied to concrete blocks as long as there is a structure in which an earthquake-resistant slit member is provided between adjacent concrete blocks.

1, 3 Pillars, walls (concrete mass)
5, 35 earthquake-resistant building structure 7 earthquake-resistant slit member 13 frame member 13a inner frame portion 13b outer frame portion 25 waterproof sheet (waterproof member)
31 bar member 33 sack member

Claims (2)

An earthquake-resistant building structure in which an earthquake-resistant slit member is interposed between adjacent concrete blocks in a concrete building,
The earthquake-resistant slit member has a frame member that is inserted into each lateral side of the earthquake-resistant slit member and holds the earthquake-resistant slit member when concrete is placed,
Among the frame members, the frame member arranged at least on the outside side of the concrete building has the same gap between the outer surface of the width direction side part of the earthquake-resistant slit member and the inner surface of the frame member facing the outer surface. A waterproof member is provided to fill the gap ,
The concrete building includes a bar member extending through the earthquake-resistant slit member, each end of which is connected to the concrete blocks on both sides of the earthquake-resistant slit member, and one end of the bar member is inserted halfway. and a sack member embedded in the concrete mass
An earthquake-resistant building structure characterized by: The waterproof member comprises a waterproof sheet interposed between an end surface of one side in the width direction of the earthquake-resistant slit member and an inner surface of the frame member facing the end surface. The earthquake-resistant building structure according to claim 1.

Images