JPS60105744A - Expansion joint - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an expansion joint that provides an expansion joint between adjacent constructs.

This type of expansion joint is used when another building is built adjacent to an existing building, or when there is uneven settlement,
It is suitable as a means for separating the underground outer wall and the building body to avoid the effects of earthquakes, etc., or for expanding and contracting the two when there are low-rise buildings around a high-rise building.

By the way, as a conventional expansion joint, one shown in FIG. 1, for example, has been proposed.

That is, IA and IB in the figure are structures arranged adjacent to each other at a required interval (for example, about 50 fins), and these structures IA.

Connecting protrusions 2A and 2B are integrally formed on the roof of the IB, respectively.

Reference numeral 3 denotes a cover that covers the connecting protrusions 2A and 2B, and is composed of an F-shaped top plate portion 4 and side plate portions 5A and 5B extending downward from both ends thereof.

6A and 6B are supports interposed between the side plate portions 5A and 5B of the cover 3 and the upper end surfaces of the connecting ridges 2A and 2B, and the support 6A is located on the upper end of the connecting ridges 2A. A fixed guide body 8 is fixed to an end face and has a sliding guide groove 7; a sliding plate 10 is inserted into and held in the sliding guide groove 7 so as to be slidable in the horizontal direction; It is composed of an engaging column part 11 that engages with the engaging recess 9, and a fixing plate 12 fixed to the side plate part 5A. A fixed plate 14 that is fixed and has an engagement recess 13 and a fitting column 1 that engages with the engagement recess 13
5, and a fixing plate 16 fixed to the side plate part 5B.

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

Therefore, when the distance between the structures IA and 18 expands or contracts due to the influence of an earthquake or the like, or when there is a difference in the vertical height due to ground subsidence, the respective supports 6A and 6B will fit into their engagement recesses 9. .13 and the engaging column portion 11.15, the sliding plate 10 of the support 6A expands and contracts to accommodate the amount of displacement between the building IA and 18.

However, in the conventional expansion joint as described above, the expansion and contraction of the sliding plate IO and the engagement recesses 9, 1
3 and the rotation of the rotational joint of the engaging column 11.15, the amount of displacement between the buildings IA and 18 is allowed, so the displacement between the two is relative to each other, such as due to unequal settlement. It is effective to some extent and can be tolerated in cases where the displacement is about 1 to 2 ml11 in a few days, but when relative displacement occurs instantaneously, such as in an earthquake, sliding The expansion and contraction of the plate 10 cannot respond to the vibration cycle, and as a result, an overload is applied to the cover 3 and the supports 6A and 6B, causing cracks and plastic deformation in these, resulting in the unexpected failure. It has the disadvantage of not being able to achieve the desired effect, and also has the disadvantage of not being easy to carry out due to the large number of component parts and complex structure, and being very expensive. .

The present invention has been made by focusing on these conventional drawbacks, and by supporting the cover with an elastic support, it is possible to prevent long-term relative displacements such as those caused by unequal conditions, as well as those caused by earthquakes. It is possible to sufficiently tolerate the amount of relative displacement even in a short period of time, and at the same time, the structure is significantly simpler than the conventional example, and the construction work can be performed extremely easily.
Moreover, the purpose is to provide a very inexpensive expansion joint.

In order to achieve this object, the present invention provides an expansion joint that joins two adjacent structures, a cover that covers both the structures, and a cover that is interposed between the side surface of the cover and each of the structures. and an elastic support body.

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

FIG. 2 is a sectional view showing an example of an expansion joint according to the present invention, and FIG. 3 is a perspective view showing an example of an elastic support forming a part of the expansion joint.

The expansion joint shown in this embodiment is a connecting protrusion 2A called Kasagi installed in buildings IA and IB.
and 2B, and elastic supports 22A and 22B interposed between the side surfaces of the cover 18 and the connecting ridges 2A and 2B.

The cover 18 is made of, for example, a stainless steel plate or the like and includes a top plate part 19 formed in a square shape, and side plate parts 20A and 20B extending downward from both ends of the top plate part 19, and the side plate parts 2OA,
The lower ends of 20B are bent inward and the hook portions 21A, 2
1B is formed.

The elastic supports 22A and 22B are formed of plate springs formed in an inverted U shape, and are attached to the side plate portions 20A and 2 of the cover 18, respectively.
It is interposed between 0B and the connecting protrusions 2A and 2B, and one end thereof is connected to the hook portion 21A of the side plate portions 20A and 20B of the cover 18.
, 21B, and at the same time, the other end side is attached to the side surface of the connecting ridges 28, 2B, thereby connecting the cover 18 to each of the connecting ridges 2A of the buildings IA, IB.

It is designed to be attached to and support the 2B, and also to serve as a sleeve rain cover.

That is, as shown in FIG. 3, the elastic supports 22A and 20B 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 mounting holes 26, 26 extending vertically at required intervals.

The elastic supports 22A, 22B are attached so as to be slidable in the vertical direction along the side surfaces of the connecting protrusions 2A, 2B by means of attachment screws 27 inserted into the attachment elongated holes 26, respectively. , the hooking piece 25 is the cover 18
The cover 18 is attached and supported so as to be slidable in the longitudinal direction of the elastic supports 22A and 22B.

In addition, in the figure, 28 is a cushioning material such as styrofoam interposed between the buildings IA and IB, and 29 is a connecting protrusion 2A and 2B.
The cover 18 is interposed between the top plate portion 19 of the cover 18 and the upper surface of the connecting protrusions 2A and 2B in order to prevent the cover 18 from rubbing against each other and being damaged, and at the same time to provide heat insulation, soundproofing, etc. It is an insulating material such as glass wool.

The above is an explanation of the configuration of an example of the expansion joint according to the present invention and its mounting state, and next, the mounting method and operation thereof will be explained.

First, I will explain how to install the connecting protrusion 2A.

A heat insulating material 29 such as glass wool, which also has soundproofing, moistureproofing, and buffering effects, is spread on the upper surface of the structure 2B, and a cover 18 is placed on top of the heat insulating material 29 for connecting the structures IA and IB.

After placing it so as to cover 2B, its side plate parts 20A, 20
Engage the hook pieces 25 of the elastic supports 22A, 22B with the hook pieces 21A, 21B formed at the lower ends of B, and in this state insert the mounting screws 27 into the long mounting holes of the elastic supports 22A, 22B. 26, and the elastic supports 22A, 22B are attached to the side surfaces of the connecting protrusions 2A, 2B by the attachment screws 27 so as to be slidable in the vertical direction.

Next, to explain the operation of the expansion joint installed in this way, as shown in FIG. pulls the cover 18 vertically downward, so the elastic support 22B is conversely pulled upward by the cover 18, and therefore a force is applied in the direction of arrow B in FIG. It will bend as shown in .

On the other hand, an elastic support 22A attached to the opposite side
Is it an elastic support because when the cover 18 tilts downward to the right in the figure, it is pulled upward as shown by arrow A? Similar to 2B, it is bent as shown by the solid line from the original position shown by the dashed line.

In this case, the elastic supports 22A, 22 made of leaf springs
Since the elastic strength of B is the same, the cover 18 will be displaced to a position where the loads of both are balanced.

Further, the amount of deflection of the elastic supports 22A and 22B at this time is determined by the distance between each elastic support, but
Compared to the relative displacement between A and IB, the distance between the elastic supports is extremely small and can be ignored.

That is, in the triangle QPP' shown by the broken line in Fig. 4, the amount of settlement (relative displacement) of the building IB is expressed as PP', the change in the distance between the elastic supports is expressed as QP'' -QP, and the angle QPP
' = 90 degrees, QP is sufficiently long compared to PP', so
Q P' -Q P has a value very close to 0, and even if the building IB is significantly displaced in the vertical direction, the elastic supports 22A and 22B can absorb the displacement with almost no bending.

Therefore, even if the buildings IA and IB sink alternately and repeatedly during an instant, such as during an earthquake, this can be handled without causing any damage such as cracks to each part.

In addition, when a large displacement occurs over time, such as due to 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. I can do it.

Next, when a horizontal displacement occurs such that the distance between the structures IA and 18 becomes wider or narrower, the leaf spring portions 24 of the elastic supports 22A and 22B are bent, reducing the load on each elastic support. The cover 18 is displaced to a balanced position.

That is, when the buildings IA and IB approach each other, the distance between the side plate portions 20A and 20B of the covering body 18 and the connecting protrusions 2A and 2B increases, so that the leaf spring portions 2 of the elastic supports 22A and 22B
4 will bend so that its curvature increases, and conversely, when the distance between the buildings IA and IB increases, the leaf spring part 24
bends so that its curvature becomes smaller, and the displacement is absorbed.

Next, each building LA, IB has elastic support members 22A, 22
When displaced in the B longitudinal direction, that is, in the direction perpendicular to the plane of the drawing in FIG. The displacement between the buildings LA and IB is absorbed by sliding the inner surfaces of the hook pieces 21A and 21B that are in sliding contact with this.

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 and very easy compared to the conventional example. It has the advantage of being inexpensive.

Furthermore, since the hook portions 25 of the leaf spring-like elastic supports 22A, 22B are engaged with the hook portions 21A, 21B of the cover 18, the elastic supports 22A, 22B function as sleeve rain closures. However, it has a particularly excellent effect of being able to prevent wind and rain from entering between buildings IA and 18.

FIG. 5 is a sectional view showing another example of the expansion joint according to the present invention, and FIG. 6 is a perspective view showing an example of its elastic support.

In this embodiment, the side part of the connecting protrusion 2B disposed on the building IB is omitted, and the structure IB is covered from the side wall to the top with a waterproof sheet 30 for waterproofing. This shows an example of an expansion joint. If an elastic support like the one used in the first embodiment is used in the part covered with this waterproof sheet 30, the holes for the mounting screws 27 will be formed in the waterproof sheet 30 exposed to the outside. Since this would cause inconvenience to waterproofing, an elastic support 31 having a shape as shown in FIG. There is.

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 formed by bending the plate spring part 33 at a required angle, and is formed at the lower end of the side plate part 20B of the cover 18 as shown in FIG. hook part 21
It is configured to be engaged with B from above.

When using this elastic support 31, buildings IA, I
After spreading insulation material 29 such as glass wool on top of B,
First, the elastic support 31 is attached to the waterproof sheet 30 on the side wall of the building IB.
from the main part, with the hanging piece part 34 on the bottom
2 on the upper side, the cover 18 is attached so as to be slidable in the vertical direction with the mounting screw 27 inserted through the long mounting hole 35 of the vertical plate part 32, and then the cover 18 is attached to the hook part 21B of the side plate part 20B.
is placed on the buildings IA, IB 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 retaining piece 25 is engaged, and in this state the elastic support 22A is attached to the connecting ridge 2A of the building IA.

The above is the configuration of the second embodiment of the present invention. According to this configuration, even if the buildings IA and IB are displaced in the vertical and/or vertical directions and/or the horizontal direction, the elastic By bending the flat leaf spring portion 33 of the support body 31, the buildings IA and IB are also
Even if there is a relative displacement along the longitudinal direction of the cover 18
The respective hooking pieces 25 and 34 of the elastic supports 22A and 31, which are hooked and in sliding contact with the hooked pieces 21A and 21B, absorb the displacement by sliding with respect to the hooked pieces 21A and 21B. can do.

Therefore, in this case as well, as in the first embodiment,
This has the effect that the cover 18 can be reliably installed and supported without causing any damage even in the event of an earthquake with vertical vibrations or horizontal vibrations, and also has the effect that it can be installed inexpensively and easily. . Furthermore, according to this embodiment, when the waterproof sheet 30 is covered and waterproofed by using the elastic support 31, the waterproof sheet 3
A particularly advantageous effect is that the elastic support can be attached to the portion exposed to the outside of the 0 without making a hole.

In each of the above embodiments, a case has been described in which a plate spring is used as the elastic support, but the present invention is not limited to this, and other elastic bodies such as a coil spring or a rod-shaped rubber can also be applied.

In addition, on the upper side, the rooftops of buildings IA and IB are covered with 1
8 has been described, the present invention can also be applied when connecting an underground outer wall to a building, or when connecting a high-rise building and a low-rise building to each other.

As described above, according to the present invention, since both sides of the cover are mounted and supported by elastic supports so as to absorb displacement in three directions, it is possible not only to prevent 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 the structure vertically up and down and/or horizontally forward, backward, left and right 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 damage to the cover, it is possible to reliably prevent damage to the cover.

In addition, since the cover is elastically supported, there is no need to provide a rotational engagement part as in the conventional case, and therefore there is no place where excessive force is applied and plastic deformation occurs, and there is no troublesome repair etc. The structure is extremely simplified, and therefore the implementation work is extremely easy and inexpensive, which is an excellent effect.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing a conventional expansion joint, FIG. 2 is a sectional view showing an example of the configuration of an expansion joint according to the present invention and its mounting state, and FIG. 3 is a perspective view showing its elastic support. FIG. 4 is a sectional view showing a state in which the building is relatively displaced in the vertical direction, and FIG. 5 is a sectional view showing another example of the expansion joint according to the present invention.
FIG. 6 is a perspective view showing the elastic support. Description of symbols LA, IB--1 building (construction), 2A, 2B series of connecting protrusions, 18-cover, 20A, 20B-ff1 side plate part, 22A, 22B, 31-elastic support body . Patent Applicant: Maruto Sangyo Co., Ltd. Procedural Nefi Official Document (Spontaneous) May 24, 1980 Mr. Kazuo Wakasugi, Commissioner of the Patent Office1, Indication of the Case, Patent Application No. 209983, 1983, 2, Name of the Invention: Expansion Zico India 3. Relationship with the case of the person making the amendment Patent applicant Address: 1494 Nishitoyoi, Kudamatsu City, Yamaguchi Prefecture Name: Maruto Sangyo Co., Ltd. 4, Agent: 150 6, Subject of amendment (1) ) Statement 7 in the “Detailed Description of the Invention” section of the specification, contents of amendment 7/--ゝ・, as attached. , Jojuriki, Kishi, (Attachment) (1) Correct r20BJ to r22BJ in the third line from the bottom of page 6 of the specification. (2) In the first line of page 11 of the specification, rQP-QPJ is corrected to rQP'-QPJ. (3) The words "curvature" in the first and third lines of page 11 of the specification are corrected to "radius of curvature." (4) “In addition,” from line 3 to line 6 on page 15 of the specification
In each of the second embodiments,... can also be applied. "In addition, in each of the above embodiments,
The elastic supports 22A, 22B, or 31 interposed between the side surface of the covering body 18 and the structure are formed with plate springs, and the elastic supports 22A, 22B, or 31 are formed with plate springs so as to extend in the vertical direction along the side surfaces of the connecting protrusions 2A, 2B or the side walls of the structure IB. In the present invention, it is not necessarily necessary to attach these elastic supports so that they can slide, but the elastic supports 22Δ, which are made of plates I\ne,
22B and 31 are respectively fixed (dimensions &J), and their thickness is made thinner than that of the covering body 18, and the elastic strength is used as an outlet to prevent relative displacement of the structure in the vertical up-down direction, yk and left-right direction. In contrast, by easily deforming the elastic supports 22A, 22B, and 31 to the point of expansion/contraction, the covering body 18
The elastic support 22A, 2'2B, or 31 may be constructed so as to absorb the displacement without applying almost any load m1, and the elastic support 22A, 2'2B, or 31 may be a coil/Nl in addition to the above-mentioned plate spring.
An elastic body such as rubber or rod-pull hole rubber can also be used. j
Correct b=8. that's all

Claims (1)

[Claims] +11 In an expansion joint that joins two adjacent structures, a cover that covers both the structures;
An expansion joint comprising an elastic support interposed between the side surface of the cover and each of the structures. (2) The expansion joint according to claim 1, wherein the elastic support is a plate spring. (3) The expansion joint according to claim 1, wherein the elastic support is a coil spring.