JPH0326263B2 - - Google Patents

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention relates to an elastic support for an expansion joint, which elastically supports a covering covering the upper parts of two adjacent structures to form an expansion joint. Regarding the body.

[Conventional technology]

Expansion joints are used when adding another building adjacent to an existing building, or when separating the nearby outer wall from the building itself to avoid uneven settlement, earthquakes, etc. In cases where a low-rise building exists around a high-rise building, it is suitable as a means for expanding and contracting the two.

By the way, as a conventional expansion joint, one shown in FIG. 6, for example, has been proposed.

That is, 1A and 1B in the figure indicate the required interval (for example,
(approximately 50mm) These buildings are located adjacent to each other with a distance from each other, and these buildings 1A, 1
Connecting protrusions 2A and 2B are integrally formed on the roof of B, respectively.

Reference numeral 3 denotes a cover that covers the connecting protrusions 2A and 2B, and is composed of an F-shaped top plate part 4 and side plate parts 5A and 5B extending from both ends of the top plate part 4 to the lower pieces.

6A, 6B are supports interposed between the side plate portions 5A, 5B of the cover 36 and the upper end surfaces of the connecting ridges 2A, 2B, and the support 6A is the connecting ridge 2A.
A sliding plate 10 having an engagement recess 9 at the tip thereof is fixed to the upper end surface and is inserted and held in the sliding guide groove 7 of a fixed guide body 8 having a sliding guide groove 7 so as to be slidable in the horizontal direction. and a fixing plate 12 which has an engagement column part 11 that engages with the engagement recess 9 and is fixed to the side plate part 5A, and on the other hand, the support 6B has an engagement column part 11 that engages with the engagement recess 9, and a fixing plate 12 fixed to the side plate part 5A. The fixing plate 14 has an engaging recess 13 and an engaging column 15 that engages with the engaging recess 13, and has a side plate 5B.
A fixed plate 16 is fixed to the fixed plate 16.

Reference numeral 17 denotes a water stop plate stretched between the connecting ridges 2A and 2B.

Therefore, if the distance between the structures 1A and 1B expands or contracts due to the effects of an earthquake or the like, or if there is a difference in vertical height due to ground subsidence, etc., each support 6
A, 6B rotate between their engagement recesses 9, 13 and engagement pillars 11, 15, and the support 6A
The sliding plate 10 expands and contracts to allow for displacement between the buildings 1A and 1B.

[Problem to be solved by the invention]

However, in the case of the conventional expansion joint as described above, the expansion and contraction of the sliding plate 10,
Since the amount of displacement between the buildings 1A and 1B is allowed by the rotation of the engagement recesses 9, 13 and the rotation joints of the engagement columns 11, 15, uneven settlement may occur. For example, both of them are relatively different, for example, 1 to 2 times in a few days.
When the displacement is about mm, it works effectively to some extent and the amount of displacement can be tolerated. However, when relative displacement occurs instantaneously like an earthquake, the expansion and contraction of the sliding plate 10 is unable to respond to the vibration cycle, and as a result, overload is applied to the cover 3 and supports 6A and 6B, causing cracks and plastic deformation in these, which prevents the intended effect from being achieved. It has the disadvantage that it cannot be achieved, and the construction work cannot be easily carried out because the number of component parts is large and the structure is complicated, and it is also very expensive.

Therefore, the present invention has been made by focusing on these conventional drawbacks, and by providing a new elastic support body for supporting the cover, it is possible to prevent long-term relative displacement such as undue subsidence, etc. It can sufficiently tolerate relative displacement in a short period of time such as an earthquake, and at the same time, the structure is significantly simpler than conventional models, making construction work extremely easy and reducing costs. The challenge is to do so.

[Means to solve the problem]

In order to solve this problem, the present invention elastically supports each structure with a cover consisting of a top plate part that covers the upper parts of two adjacent structures, and side plate parts extending from both ends of the top plate part to the bottom piece. An elastic support for an expansion joint forming an expansion joint, one end of which is formed inside the side plate of the cover so as to cover a gap formed between the side plate and the structure. It is characterized in that it is slidably engaged with the hook portion along the longitudinal direction, and the other end is formed of a leaf spring attached to the side surface of each structure.

[Effect]

When using the elastic support for expansion joints according to the present invention, simply attach the elastic support to the side of each structure and engage the hook portion formed inside the side plate of the cover with the tip of the elastic support. The expansion joint can be easily installed, the structure is extremely simple, and the product cost is reduced.

When each structure undergoes relative displacement in the vertical direction and in the direction of approaching and separating, the displacement is allowed by the bending of the elastic support, and when the relative displacement occurs in the left-right direction, the cover and the elastic support The body is slid and its displacement is allowed.

〔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 using an elastic support according to the present invention;
FIG. 2 is a perspective view showing an example of an elastic support.

The expansion joint shown in this embodiment includes a cover 18 that covers continuous protrusions 2A and 2B called caps arranged on structures 1A and 1B, and a side surface of the cover 18 and a Projections 2A and 2B
and elastic supports 22A and 22B interposed between the elastic supports 22A and 22B.

The cover 18 is made of, for example, a stainless steel plate or the like.
It consists of a top plate part 19 formed in an F-shape, and side plate parts 20A, 20B extending downward from both ends thereof, and the lower ends of the side plate parts 20A, 20B are bent inward, respectively, and hook parts 21A, 21B is formed.

The elastic supports 22A and 22B are formed of plate springs formed in an inverted U shape, and are interposed between the side plate portions 20A and 20B of the cover 18 and the connecting protrusions 2A and 2B, respectively, with one end thereof is the side plate portion 2 of the cover 18
At the same time, the other end side is engaged with the hook portions 21A, 21B of 0A, 20B, and the connecting protrusions 2A, 2
B is attached to the side surface of the building, thereby allowing the covering body 18 to be connected to each of the connecting ridges 2A,
2B, and also serves as a sleeve rain cover by covering the gap formed between the side plate parts 20A, 20B and the structure, as shown in FIG.

That is, as shown in FIG. 9, the elastic supports 22A and 22B include a vertical plate part 23, a leaf spring part 24 bent from the upper end into an inverted U shape, and a hook formed at the tip thereof. The vertical plate part 23 is provided with elongated intermediary holes 26, 26, .

And, these elastic supports 22A, 22B are
Mounting screws 2 inserted into the long mounting holes 26, respectively.
7, the connecting protrusions 2A, 2B can be attached vertically along the side surfaces thereof, and at the same time, the hooking piece 25 is attached to the hooking piece 21 of the cover 18.
A, 21B, the cover 18 is attached and supported so as to be slidable in the longitudinal direction of the elastic supports 22A, 22B.

In addition, in the figure, 28 is a buffer material such as styrene foam that is interposed between the buildings 1A and 1B, and 29 is a buffer material that prevents the connecting ridges 2A and 2B and the cover 18 from rubbing against each other and being damaged. At the same time, a heat insulating material such as glass wool is interposed between the top plate portion 19 of the cover 18 and the upper surface of the connecting ridges 2A, 2B to provide heat insulation, soundproofing effects, etc.

The above is an explanation of the structure and mounting state of an example of the elastic support for an expansion joint according to the present invention, and next, the method and operation of mounting an expansion joint using this will be explained.

First, to explain the installation method, the connecting protrusion 2A,
A heat insulating material 29 such as glass wool, which also has soundproofing, moisture proofing, and buffering effects, is spread on the upper surface of the structure 2B, and the cover 18 is placed on top of the heat insulating material 29, which connects the structures 1A, 1B to the connecting ridges 2A, 1B.
After placing it so as to cover 2B, its side plate part 20
Hook portions 21A and 2 formed at the lower ends of A and 20B
Each hooking piece 2 of the elastic supports 22A and 22B is attached to 1B.
5 is engaged, and in this state, the mounting screw 27 is inserted into the long mounting hole 26 of the elastic supports 22A, 22B, and the mounting screw 27 is used to tighten the elastic supports 22A, 22B.
22B is attached to the side surface of the connecting protrusions 2A, 2B so as to be slidable in the vertical direction.

Next, to explain the operation of the expansion joint installed in this way, first, as shown in Figure 3, when the building 1B is vertically displaced relative downward due to an earthquake, etc. body 2
2B pulls the shroud 18 vertically downward, the elastic support 22B is conversely pulled upward by the shroud 18, and therefore the arrow B in FIG.
When a force is applied in the direction, it bends as shown by the solid line from the original position shown by the dashed line.

On the other hand, the elastic support 22A attached on the opposite side is pulled upward as shown by arrow A when the cover 18 is tilted downward to the right in the figure. Similarly, it will be bent as shown by the solid line from the original position shown by the dashed line.

In this case, the elastic support 22 made of a leaf spring
Since the elastic strengths of A and 22B are the same, the cover 18 will be displaced to a position where the loads of both are balanced.

In addition, the amount of deflection of the elastic supports 22A and 22B at this time is determined by the distance between each elastic support, but the distance between the elastic supports is extremely large compared to the relative displacement of the buildings 1A and 1B. It is so small that it can be ignored.

That is, in the triangle QPP' shown by the broken line in Figure 3,
The amount of settlement (relative displacement) of building 1B is expressed as PP', the change in the distance between elastic supports is expressed as QP' - QP, and the angle
Since QPP′=90 degrees, QP is sufficiently long compared to PP′,
QP′−QP has a value very close to 0, and the structure 1
Even if B is significantly displaced in the vertical direction, the elastic supports 22A and 22B can absorb the displacement without being substantially bent.

Therefore, even if the buildings 1A and 1B sink alternately and repeatedly during an instant, such as during an earthquake, this can be dealt with without causing any damage such as cracks to each part.

In addition, when large displacement occurs over time, such as ground subsidence, the elastic supports 22A and 22B slide up and down through the long holes 26 drilled in the vertical plate portion 23 to absorb the displacement. Can be done.

Next, when a horizontal displacement occurs in which the distance between the buildings 1A and 1B becomes wider or narrower, the leaf spring portions 2 of the elastic supports 22A and 22B
4 is bent, and the cover 18 is displaced to a position where the loads on the respective elastic supports are balanced.

That is, when the buildings 1A and 1B approach each other, the side plates 20A and 20B of the cover 18 and the connecting ridge 2A,
2B, the elastic support 22A,
The leaf spring portion 24 of 22B is bent so that its radius of curvature becomes larger, and conversely, the leaf spring portion 24 of building 1A, 1
When the distance between B increases, the leaf spring portion 24 bends so that its radius of curvature becomes smaller, and the displacement is absorbed.

Next, each building 1A, 1B has an elastic support member 22.
A, 22B When displaced in the longitudinal direction, that is, in the direction perpendicular to the paper plane of FIG.
The displacement between the buildings 1A and 1B is absorbed by the hooking pieces 25 of A and 22B sliding on the inner surfaces of the hook pieces 21A and 21B that come into sliding contact therewith.

As described above, according to the above-described embodiment, relative displacement in three directions can be reliably tolerated with an extremely simple configuration, and the installation work is extremely easy compared to the conventional example. It has the excellent effect of being very inexpensive.

Furthermore, the hook portions 25 of the elastic supports 22A, 22B in the form of leaf springs and the hook portions 21A, 21B of the cover 18
Since the elastic supports 22A, 2 are engaged with each other, the elastic supports 22A, 2
2B functions as a sleeve rain cover, and buildings 1A and 1
It has a particularly excellent effect of being able to prevent wind and rain from entering between B and B.

FIG. 4 is a perspective view showing another embodiment of the elastic support for an expansion joint, and FIG. 5 is a sectional view showing an expansion joint using this elastic support.

In this embodiment, the side part of the connecting protrusion 2B disposed on the building 1B is omitted, and the structure 1B is covered from the side wall to the top with a waterproof sheet 30 for waterproofing. This shows the case where it is applied to an expansion joint. If an elastic support like the one used in the first embodiment is used for the part covered with this waterproof sheet 30, it will be attached to the waterproof sheet 30 exposed to the outside. It is necessary to drill a hole for the screw 27, which causes problems with waterproofing, so
An elastic support 31 having a shape as shown in FIG. 4 is used so that it can be mounted inside the cover 18 with the mounting screws 25.

That is, the elastic support 31 includes a vertical plate part 32 in which mounting holes 35 are bored at predetermined intervals, and a leaf spring part 33 that is bent at a predetermined angle and extended from the vertical plate part 32. and a hooking piece 34 that is bent at a required angle with respect to the plate spring 33, and is formed at the lower end of the side plate 20B of the cover 18 as shown in FIG. It is configured to be engaged with the hook portion 21B from above.

When using this elastic support 31, first spread a heat insulating material 29 such as glass wool over the buildings 1A and 1B, and then place the elastic support 31 on the side wall of the building 1B from above the waterproof sheet 30. Stop piece part 3
4 as the lower side and its vertical plate part 32 as the upper side, the vertical plate part 32 is slidably mounted in the vertical direction by a mounting screw 27 inserted into the long mounting hole 35 of the vertical plate part 32,
Next, the cover 18 is attached to the hook portion 21B of the side plate portion 20B.
is placed on the buildings 1A, 1B so that it engages with the hooking piece 34 of the elastic support 31, and then the elastic support 22A is hooked on the hooking piece 21A of the side plate 20A of the cover 18. The detachable piece 25 is hooked, and in this state, the elastic support 22A is attached to the connecting protrusion 2 of the building 1A.
Attach to A.

The above is the second implementation configuration of the present invention, and according to this configuration, even if the buildings 1A and 1B are displaced vertically and/or horizontally, they can be elastically supported. By bending the flat plate spring portion 33 of the body 31, the structure 1
Even if A and 1B are relatively displaced along the longitudinal direction of the elastic supports 22A and 31, each hooking piece of the elastic supports 22A and 31 that is hooked to and comes into sliding contact with the hook portions 21A and 21B of the cover 18 Parts 25 and 34 are
By sliding on the hook portions 21A and 21B, the displacement can be absorbed.

Therefore, in this case as well, as in the case of the first embodiment, the cover 18 can be reliably mounted and supported without causing any damage even in the event of an earthquake with vertical vibration or horizontal vibration. It is effective, inexpensive, and easy to install. Furthermore, the elastic support 31 of this embodiment
If the waterproof sheet 30 is covered and waterproofed, the elastic support can be attached to the outside of the waterproof sheet 30 without making a hole, which is a particularly advantageous effect.

As described above, according to the elastic support of the present invention, both sides of the cover are supported so as to absorb displacement in three directions, so it is possible to absorb not only the relative displacement of the structure over a long period of uneven settlement. It is possible to reliably and immediately tolerate the instantaneous relative displacement of a building in the vertical up-down direction and/or the horizontal front-back, left-right direction due to earthquakes, etc., and in this case, there is no risk of unexpected large stress being applied to the covering. Since there is no cover, there is an effect that damage to the cover can be reliably prevented.

In addition, since the cover is elastically supported, there is no need to provide a rotating engagement part as in the conventional case, and there is no place where excessive force is applied and plastic deformation occurs.
There are no troublesome repairs, etc., and the overall structure is extremely simplified, so the construction work is extremely easy and inexpensive, which is an excellent effect.

[Brief explanation of drawings]

Fig. 1 is a sectional view showing an expansion joint using the elastic support for expansion joints according to the present invention, Fig. 2 is a perspective view showing an example of the elastic support, and Fig. 3 is a building construction. 4 is a perspective view showing another embodiment of the elastic support, FIG. 5 is a sectional view showing an expansion joint using this, and FIG. The figure is a sectional view showing a conventional expansion joint. Explanation of codes, 1A, 1B...Buildings (structures),
2A, 2B... Connection protrusion, 18... Cover, 20
A, 20B...Side plate portion of cover, 22A, 22B,
31...Elastic support.

Claims (1)

[Claims] 1 A covering body 18 consisting of a top plate part 19 that covers the upper parts of two adjacent structures 1A and 1B and side plate parts 20A and 20B extending downward from both ends thereof is elastically supported by each structure 1A and 1B to extract. An elastic support for an expansion joint forming a pansion joint, the side plate portion 20A,
One end side is slidably engaged along the longitudinal direction of hook portions 21A, 21B formed inside the side plate portion of the cover 18 so as to cover the gap formed between the structure 20B and the structures 1A, 1B. 1. An elastic support for an expansion joint, characterized in that the other end side is formed of a leaf spring attached to the side surface of each structure 1A, 1B.