JPH0326264B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an expansion joint for expanding and contracting joints between structures that are adjacent to each other and have different heights.

[Conventional technology]

This type of expansion joint is used when building another building of a different height adjacent to an existing building, or when building a high-rise building to avoid uneven settlement, earthquakes, etc. When constructing a low-rise building adjacent to the surrounding area, it is suitable as a means to connect and connect the two buildings and prevent rainwater from entering between them.

By the way, as a conventional expansion joint, one shown in FIG. 6, for example, is provided.

That is, 1A and 1B are spaced at the required interval (for example, 50mm).
degree) The building is a building that is arranged adjacent to each other at a distance, and the height of the building 1A is higher than that of the building 1B, and the roof of the building 1B has a connecting ridge 2. are integrally formed.

3 is a cover, one end of which is rotatably attached to the side wall of the building 1A via a rotation joint 4, and the other end of which is attached to a support 5 on the connecting ridge 2 of the building 1B. They are rotatably connected via.

The support 5 includes a fixed guide body 7 that is fixed to the upper end surface of the connecting protrusion 2 and has a sliding guide groove 6, and a distal end that is inserted and held in the sliding guide groove 6 so as to be freely slidable in the horizontal direction. It consists of a sliding plate 9 having an engaging recess 8 on the side thereof, and a fixed plate 11 having an engaging column 10 that engages with the engaging recess 8 and fixed to the side plate 3a of the cover 3, The engagement recess 8 and the engagement post 10 form a ball joint.

[Problem to be solved by the invention]

However, in the case of such a conventional expansion joint, when the buildings 1A and 1B are vertically displaced relative to each other, the amount of displacement is calculated by the rotation of the rotary joint 4 and the expansion and contraction of the sliding plate 9. and the engagement recess 8
and the rotation of the rotational joint of the engagement column 10, so that both structures 1A and 1B may relatively sink by 1 to 2 mm in a few days, for example, due to uneven settlement. In cases where there is a degree of displacement, that displacement should be effectively tolerated, but when it causes instantaneous relative displacement such as in an earthquake,
The expansion and contraction of the sliding plate 10 cannot respond to the vibration cycle, and as a result, an overload is applied to the cover 3, support 5, etc., causing damage such as cracks or plastic deformation to these, resulting in unexpected failure. There was a serious flaw that made it impossible to achieve the objective.

In addition, conventional products have a large number of component parts and are complicated in construction, so they have the disadvantage that the installation work is complicated and they are very expensive.

Therefore, the present invention can be applied not only to cases where relative displacement occurs between structures over a long period of time such as uneven settlement, but also to complex relative displacements in vertical or horizontal directions that occur instantaneously such as an earthquake. The object of the present invention is to easily and reliably permit both of these, and to simplify the construction work by significantly simplifying the overall structure compared to conventional products.

[Means to solve the problem]

In order to solve this problem, the present invention provides an expansion joint that expands and contracts between first and second structures that are adjacent to each other and have different heights. extending from the side wall of the first structure to the top side of the second structure, one end of the cover is attached to be slidable vertically and horizontally along the side wall of the first structure, and faces the other end of the cover. A plate spring-like elastic support that also serves as a sleeve cover is attached to the side wall of the second structure, and the other end of the cover is slidable along the longitudinal direction of the elastic support. It is characterized by being engaged.

[Effect]

According to the present invention, when the constructs are vertically displaced relative to each other, the cover is slid against the first construct to allow the displacement, and when the constructs are relatively displaced in the front-rear direction toward and away from each other, the cover is moved relative to the first construct. When the spring-like elastic support bends and its displacement is allowed, and the structure is displaced from side to side along the longitudinal direction of the leaf-spring-like elastic support, both ends of the cover slide against the structure and the elastic support. The displacement is allowed.

In this case, relative displacement in the vertical and horizontal directions is allowed by sliding of the cover, so the external force acting on the cover due to complex relative displacement is extremely small, and there is no risk of deformation of the cover.

In particular, when a relative displacement occurs in the left-right direction, since both ends of the cover can be slid in the left-right direction, the displacement can be reliably tolerated without any external force acting on the cover.

Further, when a displacement occurs in the front-rear direction or when an earthquake or the like causes an instantaneous displacement in the vertical direction, the leaf spring-like elastic support is deformed and the displacement is reliably tolerated.

Therefore, of course, in cases where relative displacement occurs between structures over a long period of time, such as in cases of uneven settlement,
Even for complex relative displacements in the vertical or horizontal direction that occur instantaneously, such as in earthquakes, the amount of displacement can be easily and reliably tolerated.

In addition, since it has a simple structure that only supports both ends of the cover, the overall structure is significantly simpler than conventional products, and it can be installed easily.

〔Example〕

Hereinafter, the present invention will be specifically described based on embodiments shown in the drawings.

FIG. 1 is a sectional view showing an example of an expansion joint according to the present invention, and FIG. 2 is a perspective view showing an example of its elastic support.

In the figure, one end of 15 is attached so that it can slide vertically and horizontally along the wall of building 1A as a first structure, and the other end is attached to the top side of building 1B as second structure. Extended and building 1
Vertical plate part 1 which is a cover bent downward parallel to the side wall of building 1A and is in sliding contact with the side wall of building 1A.
6, a top plate part 17 that covers the top surface of the building 1B, and a side plate part 18 that faces the side wall of the building 1B. Bent piece portion 19 to be held
A hook portion 20 is formed at the lower end of the side plate portion 18 to engage with an elastic support 21 to be described later.

The elastic support body 21 is formed of a plate spring formed in an inverted U shape, and is connected to the side plate portion 18 of the covering body 15 and the building 1.
Interposed between the connecting protrusion 2 arranged on B,
One end thereof is engaged with a hook portion 20 formed at the lower end of the side plate portion 18 of the cover 15, and at the same time, the other end side is attached to the side surface of the connecting protrusion 2 so as to be slidable in the vertical direction. The side plate portion 18 of the cover 15 is attached to and supported by the building 1B, and is also used as a rain cover.

That is, as shown in FIG. 2, the elastic support body 21 includes a vertical plate part 22, a leaf spring part 23 bent from the upper end thereof into an inverted U shape, and a hanging piece bent at the tip thereof. The vertical plate part 22 has long mounting holes 25, 25, . . . extending in the vertical direction formed therein at a required interval. This elastic support body 21 is attached so as to be slidable in the vertical direction along the side surface of the connecting protrusion 2 by means of attachment screws 26 inserted into the long attachment holes 25, and at the same time, the elastic support body 21 is The detachable part 24 is the side plate part 18 of the cover 15
The cover 15 is hooked to a hook portion 20 formed in the
is attached and supported so as to be slidable in the longitudinal direction of the elastic support body 21.

FIG. 3 is a perspective view of a mounting spring fitting 27 that attaches the cover 15 to the side wall of the building 1A so as to be slidable in the vertical and horizontal directions along the wall surface of the building 1A, and the mounting screw 28 is inserted through the mounting spring fitting 27. It consists of a mounting flange part 30 in which through holes 29 are bored at required intervals, a plate spring part 31 bent in a U-shape, and a support piece part 32 bent in a Z-shape, As shown in FIG. 2, the bent corner portion 33 and tip edge 34 of the support piece portion 32 come into contact with the vertical plate portion 16 of the cover 15, and the elastic force of the leaf spring portion 31 causes the vertical plate portion to 16 is attached to the side wall of the building 1A so as to press it against the side wall of the building 1A.

Here, the bent piece portion 19 of the cover 15 is located approximately at the center within the mounting spring fitting 27, and is held so as to be slidable in the vertical and horizontal directions along the wall surface of the building 1A.

Note that 35 is a sealing material filled to prevent rainwater etc. from entering through the through hole 29.

In addition, 36 is a buffering material such as styrene foam that is interposed between the buildings 1A and 1B, and 37 is a buffering material such as styrene foam that prevents the covering 15 from rubbing against the connecting ridge 2 and being damaged, and has heat insulation and soundproofing effects. In order to grant
This is a heat insulating material such as glass wool interposed between the top plate part 17 of the cover and the connecting protrusion 2.

The above is an example of the structure of the expansion joint according to the present invention, and its operation will be explained next.

First, to explain the installation method, building 1
A glass wool insulation material is spread on the roof of Building B, and the vertical piece 16 of the cover 15 is placed on top of it with the vertical piece 16 in contact with the side wall of the building 1A. It is fixed to the side wall of the building 1A with the curved piece part 19 located in the center thereof, and then the hanging piece part 24 of the elastic support body 21 is hooked to the hook piece part 20 of the cover 15, and in this state Then, the elastic support 21 is attached to the side surface of the connecting ridge 2 of the building 1B using the attachment screw 26.

To explain the operation of the expansion joint mounted and supported in this way, first, when the building 1B is vertically displaced relative to the bottom due to ground subsidence or an earthquake, the elastic support 2 However, the vertical plate portion 16 of the cover 15 is attached to the side wall of the building 1A so that it can be slid vertically by means of a spring fitting 27. Since it is attached, the cover 15 moves downward in parallel along the side wall of the building 1A, thereby absorbing the relative displacement of the building 1B.

Furthermore, if the displacement in the vertical direction becomes even larger, the elastic support 21 slides against the building 1B through the mounting holes 25 bored in the vertical plate portion 22, thereby reducing the displacement. Absorb.

Furthermore, even if the vibration is relatively small in amplitude and short in period, such as during an earthquake, the plate spring portion 23 of the elastic support 21 is deflected and deformed. can be dealt with effectively.

Note that when the building 1B is displaced vertically upward, the hooking piece 24 of the elastic support 21 pulls up the cover 15, so contrary to the above, the vertical plate 16 of the cover 15 moves vertically upward. It slides upward along the side wall to absorb the displacement.

Next, when the buildings 1A and 1B move closer to each other in the left-right direction as seen in FIG. I try to push it outward, but
Since the vertical plate part 16 is pressed toward the building 1A side by the mounting spring fitting 27, the radius of curvature of the leaf spring part 23 of the elastic support body 21 is bent to become smaller, and conversely, the space between the buildings 1A and 1B is bent. When a displacement occurs in which the interval becomes narrower, the leaf spring portion 23 is deflected and deformed so that the radius of curvature becomes larger to absorb the displacement.

Furthermore, when the buildings 1A and 1B are relatively displaced in the direction perpendicular to the plane of the paper in FIG. part 33 and tip edge 3
4 is in sliding contact with the vertical plate portion 16 of the cover 15, and the hooking piece 24 of the elastic support 21 is in sliding contact with the hook piece 20 of the cover 15. The displacement can be dealt with by moving.

In addition, since the elastic support body 21 is configured to double as a sleeve rain cover formed by a leaf spring, the cover body 1
Wind and rain do not enter between the cover 15 and the elastic support 21, and there is no fear that the cover 15 will be damaged by the wind or that the inside will rust due to rainwater.

Further, the vertical plate portion 16 of the cover 15 is also pressed against the side wall of the building 1A by the mounting spring fittings 27, and its tip is bent downward to form a bent piece portion 19. It has a particularly excellent effect of preventing wind and rain from entering the area.

As described above, according to this embodiment, it is possible to reliably deal with relative displacement in three directions (up, down, front, back, left, and right) with an extremely simple configuration, and it is also possible to deal with large displacement over a long period of time such as uneven subsidence. In addition to being able to cope with vibrations that have relatively small amplitudes and short periods, such as those caused by earthquakes, it is also effective.

Furthermore, compared to the conventional example, the mounting work is extremely easy and the cost is very low.

Next, FIG. 4 is a sectional view showing another example of the expansion joint according to the present invention.

In this example, connecting ridges 2 are provided on the side of the building 1B.
A waterproof sheet 3 is not formed on the side of the building 1B.
8 is coated with waterproof treatment.

In this case, if the elastic support 21 shown in FIGS. 1 and 2 is used as the elastic support, the screws for attaching the elastic support can be attached to the part exposed outside the waterproof sheet 38 and exposed to wind and rain. This is not desirable in terms of waterproofing, so the 5th
An elastic support 39 as shown in the figure is used.

This elastic support body 39 is configured to use a sleeve cover like the elastic support body 21, and has a vertical plate portion 4 in which long holes 40 for attachment are bored at required intervals.
1, a leaf spring part 42 which is extended by being bent at a required angle with respect to the vertical plate part 41, and a locking piece part 43 which is further bent at a required angle with respect to the leaf spring part 42. , as shown in FIG.
1 is on the upper side and the above-mentioned latch piece 43 is on the lower side, the latch piece 43 is hooked on the hook piece 20 formed on the side plate part 18 of the cover 15, and in this state, the mounting screw 44 is
It is attached to the side of the building 1B via a waterproof sheet 38.

When constructing an expansion joint in this embodiment, first attach the elastic support 39 from above the waterproof sheet 38 to the side surface of the building 1B using the mounting screws 4.
After attaching the cover 1 so that it can slide vertically in step 4,
It is placed on the building 1B so that the hook part 20 of No. 5 and the hanging piece 43 of the elastic support 39 are engaged, and finally the mounting spring fitting is fixed and installed on the building 1A. do.

The other configurations are substantially the same as those in the above embodiment,
The same reference numerals are used to omit the detailed explanation.

The above is the configuration of the present embodiment. According to this configuration, even if the buildings 1A, 1B are displaced in the vertical direction, the hooking piece 43 of the elastic support 39 is attached to the cover 15 in the same way as in the previously described embodiment. Even if the vertical plate part 16 is slid by lifting or lowering the vertical plate part 16 and is displaced in the horizontal direction, the flat plate-like leaf spring part 42 warps upward or downward, thereby absorbing the displacement. In addition, the mounting spring fittings 27
When the elastic support body 39 is displaced in the longitudinal direction, the mounting spring fitting 27 and the cover body 15, and the elastic support body 39 and the cover body 15 can slide against each other and absorb the displacement.

Further, in this embodiment, since the vertical plate portion 41 of the elastic support 39 is covered by the cover 15 and the leaf spring portion 42 of the elastic support, it is not exposed to the outside.
There is a particularly excellent effect in that rainwater and the like will not enter through the screw holes from the long mounting holes 40 drilled in the vertical plate portion.

〔Effect of the invention〕

As described above, according to the present invention, one end of the cover extending toward the upper surface of the second structure is attached to the side wall of the first structure so as to be slidable in the vertical direction, and the other end of the cover Since an elastic support body is interposed between the side plate portion formed in the second structure and the second structure, it is possible to reliably allow relative displacement in the vertical and horizontal directions between the two structures. Moreover, since no unreasonable force is applied to the cover, the cover will not be damaged or plastically deformed. Therefore, even if relative displacement occurs instantaneously, such as during an earthquake, the cover will not be damaged or plastically deformed. This has the effect of reliably allowing displacement.

Furthermore, according to the present invention, it is possible to obtain an extremely simple expansion joint in which the cover is simply attached using a suitable mounting fitting such as the above-mentioned mounting spring fitting and an elastic support. It has excellent effects such as not only easy work but also very low manufacturing cost.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view showing an example of the expansion joint according to the present invention, FIG. 2 is a perspective view showing one row of its elastic supports, and FIG. 3 is a mounting used in the expansion joint according to the present invention. FIG. 4 is a sectional view showing another embodiment of the present invention, FIG. 5 is a perspective view showing an example of the elastic support, and FIG. 6 is a conventional expansion joint. It is a sectional view showing an example. Explanation of codes, 1A, 1B...Buildings (structures),
2... Connection protrusion, 15... Cover, 21, 39...
...Elastic support body, 27...Mounting spring fitting.

Claims (1)

[Claims] 1. In an expansion joint that expands and contracts between first and second structures 1A and 1B that are adjacent to each other and have different heights, said structures 1A and 1
A cover 15 that covers the space between B extends from the side wall of the first structure 1A to the upper surface side of the second structure 1B, and one end of the cover 15 slides vertically and horizontally along the side wall of the first structure 1A. movably mounted and
Elastic supports 21 and 39 in the form of leaf springs, which also serve as sleeve rain closures, are attached to the side wall of the second structure 1B facing the other end of the cover 15, and the other end of the cover 15 is attached to the elastic support. An expansion joint characterized in that the expansion joint is slidably engaged with the tips of the bodies 21 and 39 along the longitudinal direction thereof.