JPH0252727B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an expansion joint for joining adjacent structures and an elastic support used therein.

This type of expansion joint is used when an existing building is expanded adjacent to another building, or to avoid the effects of uneven settlement, earthquakes, etc., by separating the underground outer wall from the main body of the building. It is suitable as a means for expanding and contracting a high-rise building, or when a low-rise building exists 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, 1A and 1B in the figure indicate the required interval (for example,
(approximately 50 mm) are structures arranged adjacent to each other at a distance from each other, and these structures 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 portion 4 and side plate portions 5A and 5B extending downward from both ends thereof.

6A, 6B are supports interposed between the side plate portions 5A, 5B of the cover 3 and the upper end surfaces of the connecting ridges 2A, 2B, and the support 6A is located above the connecting ridges 2A. A fixed guide body 8 fixed to an end face and having a sliding guide groove 7, a sliding plate having an engaging recess 9 at the tip inserted and held in the sliding guide groove 7 so as to be slidable in the horizontal direction, and its engagement. Engagement column portion 11 that engages with mating recess 9
and a fixed plate 12 fixed to the side plate portion 5A.
On the other hand, the support 6B is fixed to the upper end surface of the connecting protrusion 2B, and the engagement recess 13
The fixing plate 14 includes a fixing plate 14 having a fixed plate 14, and a fixing plate 16 having a fitting column part 15 that engages with the engaging recess 13 and 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 1A and 1B expands or contracts due to the influence of an earthquake or the like, or when there is a difference in the vertical height, the respective supports 6A and 6B fit into their engagement recesses 9 and 13. At the same time, the sliding plate 10 of the support 6A expands and contracts to accommodate the amount of displacement between the structures 1A and 1B.

However, in the case of the conventional expansion joint as described above, the expansion and contraction of the sliding plate 10,
It is assumed that displacement of the position 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, so 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 parts, resulting in the desired effect not 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.

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 not only long-term relative displacement such as uneven subsidence, but also earthquakes. We have developed a new expansion joint that can easily and reliably tolerate relative displacement even in a short period of time, and at the same time has a significantly simpler configuration than conventional models, making construction work extremely easy. The purpose is to provide information.

In order to achieve this object, the present invention provides an expansion joint that joins adjacent structures so that the gap between the structures is covered between the connecting ridges disposed between each of the structures. a vertical elastic support body interposed between the cover body and the connection side position of each of the connecting protrusions; It is characterized by being comprised of a horizontal elastic support inserted between a connecting protrusion and a horizontal elastic support.

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

FIG. 2 is a sectional view showing a first embodiment of the present invention, and FIGS. 3A and 3B are perspective views showing a rain joint fitting.

In the present invention, the cover 3 is supported by the connecting protrusions (capsules) 2A, 2B by elastic supports.

The cover 3 is attached so as to be movable vertically and horizontally between the connecting ridges 2A and 2B so as to cover the gap between the adjacent structures 1A and 1B.

That is, 18A and 18B are vertical elastic supports made of coil springs, and one end of which is connected to the connecting ridges 2A and 2B of the buildings 1A and 1B, respectively.
It is inserted and held in vertical cylindrical bodies 19A and 19B which are fixedly installed on the upper surface of the ends opposite to each other, and the other end is brought into contact with the lower surface of the cover 3 via receiving washers 20A and 20B. Here, the vertical elastic support 18
A, 18B are arranged in a required number at required intervals in the longitudinal direction of the cover 3 (direction perpendicular to the page).

21A and 21B are horizontal elastic supports,
It is constituted by a coil spring, and one end thereof is inserted and held in a bottomed horizontal cylindrical body 22A, 22B fixed to an outer position of the connecting protrusion 2A, 2B,
The other end is in contact with the inner surface of the side plate portions 5A, 5B of the cover 3 via receiving washers 23A, 23B.

Here, the required number of horizontal elastic supports 21A and 21B are arranged at required intervals in the longitudinal direction of the cover 3.

Therefore, the spring constants of the vertical elastic supports 18A and 18B are selected to be sufficient to support approximately 90% of the total weight of the cover 3, and
The spring constants of the horizontal elastic supports 21A and 21B are selected so that the remaining weight of the horizontal elastic supports 21A and 21B is carried by the horizontal elastic supports 21A and 21B.

In this case, each elastic support 18A, 18B; 21
A and 21B are interposed between the connecting protrusions 2A and 2B and the cover 3 in a state where they are compressed by the required length with respect to their free lengths so that they can expand and contract in the vertical and horizontal directions, respectively. ing.

24A, 24B are side plate parts 5A, 5B of the cover 3
It is a rain joint arranged between the lower end surface of the connecting ridges 2A and 2B, and the screw 2 screwed into the side surface of the connecting ridges 2A and 2B as shown in Fig. 3.
L fittings 26A, 26B (A in the same figure) are arranged to be slidable up and down by L fittings 5A, 25B, and L fittings 26A, 26B are arranged to be slidable in the horizontal direction on the horizontal plate portions of the L fittings 26A, 26B. Sliding plate 28 fixed to side plate parts 5A, 5B of cover 3 with wood screws 27A, 27B
It is composed of A and 28B.

The L fittings 26A, 26B have elongated holes 29 extending in the vertical direction at a required interval in the vertical plate portion thereof, and elongated holes 30 extending in the horizontal direction at a required interval in the horizontal plate portion. , by inserting screws 25A, 25B into the elongated holes 29 and screwing their tips onto the connecting ridges 2A, 2B, so as to be freely slidable on the connecting ridges 2A, 2B.

L fittings 26A, 2 are attached to the sliding plates 28A, 28B.
A long hole 31 corresponding to the long hole 30 of 6B is bored, and the long hole 3 into which the wood screws 27A, 27B are inserted.
2 is drilled, and wood screws 27A,
27B is inserted and fixed to the bent parts 33A, 33B formed in advance on the side plate parts 5A, 5B of the cover 3, and the long hole 31 and the long hole 3 of the L fittings 26A, 26B are inserted.
By loosely inserting the bolts 34A, 34B into the long hole 31 side and screwing the nuts 35A, 35B onto the bolts 34A, 34B, the L fittings 26A, 26B are slidably slidable in the horizontal direction on the horizontal plate portions of the L fittings 26A, 26B. Ru.

The above is the configuration of the first embodiment of the present invention, and its operation will be explained next.

To explain the case where the building 1A (or 1B) side sinks, the vertical elastic support 18A (or 18B) expands as the building 1A (or 1B) sinks, and at the same time, the vertical elastic support 18B (or 18A) contracts, and the horizontal elastic support further expands. At the same time as the body 21A (or 21B) bends upward, the horizontal elastic support 21B (or 21
A) is bent downward, and the cover 3 is displaced to a position where the loads on each elastic support are balanced.

Since this amount of displacement is approximately 1/2 of the amount of settlement of the building 1A, the L fitting 26A (or 26B) of the rain joint 24A (or 24B) is relative to the connecting ridge 2A (or 2B). and slide it upward to attach the L fitting 26 of the rain joint 24B (or 24A).
B (or 26A) slides downward against the connecting ridge 2A (or 2B), and as a result, the building 1A
(or 1B) is absorbed.

In this way, the amount of subsidence is absorbed by the elastic deformation of each elastic support, and the amount of movement of the cover 3 is only about 1/2 of the amount of subsidence, so the response characteristics to the subsidence are fast and smooth. It will be done.

Therefore, like an earthquake, the building 1
Even if the subsidence of A and 1B is repeated alternately, this can be dealt with without causing any damage such as cracks to each part.

Further, when a horizontal displacement occurs such that the distance between the buildings 1A and 1B becomes wider or narrower, the horizontal elastic support 21A (or 21B) expands and the horizontal elastic support 21B (or 2
1A) is contracted, and the vertical elastic supports 18A and 18B are deflected horizontally to the left or right, respectively, and the cover 3 is placed in a position where the load on each elastic support is balanced.
is displaced.

In this case, since the vertical elastic supports 18A and 18B are bent in the horizontal direction, the amount of displacement of the cover 3 is further reduced, and the amount of displacement of the cover 3 is also reduced by the sliding plates 28A and 28A of the rain joints 24A and 24B. This will be absorbed by the relative movement between 28B and L fittings 26A, 26B.

Therefore, in this case as well, the response to the horizontal vibration of an earthquake, so-called lateral shaking, is increased, as described above.

Next, a second embodiment of the present invention will be described in FIGS. 4 and 5.
This will be explained using figures.

In this example, the vertical elastic support is constituted by one vertical elastic support 37.

That is, as shown in FIG. 5, the vertical elastic support body 37 consists of an inverted U-shaped leaf spring part 38 and mounting flange parts 39A, 39B extending outward from both ends thereof. Elongated hole 4 through which the mounting screws 40A and 40B are inserted
1A and 41B are drilled.

The vertical elastic support 37 has its mounting flange portions 39A and 39B attached to the building 1, respectively.
The connecting protrusions 2A and 2B of A and 1B are fixed to the upper surfaces of opposite end sides by mounting screws 40A and 40B, and the plate spring portion 38 is in contact with the lower surface of the center of the cover 3 in a compressed state. , which supports about 90% of the total weight of the cover 3.

The other configurations are substantially the same as those of the first embodiment, and detailed explanation thereof will be omitted.

The above is the configuration of the second embodiment of the present invention, and according to this configuration, similarly to the first embodiment, the building 1A,
Even if 1B is relatively displaced in the vertical direction, the abutting position between the leaf spring portion 38 of the vertical elastic support 37 and the cover 3 shifts according to the amount of displacement as shown in FIG. , submerged structure 1A (or 1
At the same time as the horizontal elastic support 21A (or 21B) on the B) side bends upward, the other building 1B (or 1
The horizontal elastic support 21B (21A) on the A) side bends downward, and the cover 3 is elastically supported at a position where the load on each elastic support is balanced.

Also, when the buildings 1A and 1B are relatively displaced in the horizontal direction, the horizontal elastic support 21A (or 21B) expands and the horizontal elastic support 21B (or 21A) contracts, although not shown. Along with this, whether the horizontal movement of the cover 3 shifts the contact position with the leaf spring part 38 of the vertical elastic support 37, or
Alternatively, it is allowed by elastic deformation of the leaf spring portion 38.

Therefore, the same effect as in the first embodiment can be obtained, and the cover 3 can be reliably supported without causing any damage even in the event of a pitching earthquake.
Moreover, since the vertical elastic support 37 is a single simple component consisting of the leaf spring part 38 and the mounting flanges 39A and 39B, the construction work is easy and the overall structure is simplified. It has great advantages.

Next, a third embodiment of the present invention will be described with reference to FIGS. 6 and 7.

In this example, in the configuration of the second example (shown in FIG. 4), the vertical elastic support body 37 omits the long holes 41A, 41B of the mounting flange portions 39A, 39B, and instead uses U-shaped leaf springs. A long hole 42 for attachment is formed in the center of the portion 38, and the vertical elastic support 37 bridges the U-shaped plate spring portion 38 between the connecting ridges 2A and 2B so as to be freely tiltable. The flange portions 39A and 39B are swingably attached to the center of the plate spring 43 via an adjustment washer 44.
It has the same structure as the second embodiment except that it is interposed between the connecting protrusions 2A, 2B and the cover 3 in a state where they are simply brought into contact with the lower part of the cover 3, respectively.

Therefore, in the case of this third embodiment as well, the relative displacement in the vertical direction of the structures 1A and 1B can be reliably tolerated by the elastic deformation of each elastic support, as shown by the chain line in FIG. , the horizontal elastic supports 21A and 21B also respond to relative displacement in the horizontal direction.
Either one of them expands and the other contracts, and the amount of displacement can be tolerated by sliding between the flange portions 39A, 39B and the lower surface of the cover 3.

In addition, in the FIGS. 1 to 3 embodiments, the width of the connecting ridges 2A, 2B formed on the buildings 1A, 1B is wide, and therefore the width of the cover 3 becomes extremely wide, increasing its weight. In this case, as shown in FIG. 7, the vertical elastic supports 37 (as shown in FIGS. 4 and 6) or the vertical elastic supports 18A and 18B (as shown in FIG. 2)
It is preferable to arrange auxiliary vertical elastic supports 45A and 45B on the outside.

Next, a fourth embodiment of the present invention will be described with reference to FIGS. 8 and 9.

In this example, horizontal elastic supports 21A, 21
B is configured to double as a sleeve rain closure.

That is, the horizontal elastic supports 21A, 21B
As shown in the figure, it is composed of a vertical plate part 46 and a plate spring part 47 folded back in an inverted U shape from its upper end.
Elongated mounting holes 48 extending in the vertical direction are bored in the vertical plate portion 46 at required intervals.

The horizontal elastic supports 21A and 21B are attached so as to be slidable in the vertical direction with attachment screws 49A and 49B, with the vertical plate portions 46 aligned with the outer surfaces of the connecting ridges 2A and 2B.

On the other hand, at the lower ends of the side plate parts 5A and 5B of the cover 3,
Hook pieces 50A and 50B extending inward are formed,
A horizontal elastic support 2 is provided in these hook pieces 50A and 50B.
The ends of the leaf spring portions 47 of 1A and 21B are engaged.

Thus, the cover 3 and the horizontal elastic supports 21A, 21
B means that after the horizontal elastic supports 21A, 21B are attached to the connecting protrusions 2A, 2B, the cover 3 is lowered from above, and the hooks 50A, 50B are attached to the leaf spring portions of the horizontal elastic supports 21A, 21B. 47 and then press it against its elasticity to bend the leaf spring part 47 inwardly. In this state, the cover 3 is further lowered to release the hook pieces 50A, 5
When the engagement between 0B and the leaf spring part 47 is disengaged, the leaf spring part 47 returns to its original position due to its elasticity, and its lower end is inserted and held in the hook pieces 50A and 50B.

The above is the configuration of the fourth embodiment of the present invention. According to this, the horizontal elastic supports 21A, 21B allow relative displacement in the horizontal direction of the buildings 1A, 1B, and the horizontal elastic supports 21A, 21B leaf spring part 4
7 and the hooks 50A and 50B of the cover 3 are engaged, so wind and rain can be prevented from entering from this engaged position, and the sleeve can function as a rain cover.

In each of the above embodiments, a coil spring or 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 rubber rod can also be used.

In addition, in the above example, the case where the connecting ridges 2A and 2B formed on the roofs of the buildings 1A and 1B are covered with the cover 3 was explained, but when connecting the underground outer wall and the building, The present invention can also be applied to cases in which buildings and low-rise buildings are connected to each other.

As described above, according to the present invention, since the cover is elastically supported by vertical elastic supports and horizontal elastic supports, long-term relative displacement of the structure such as uneven settlement is prevented. Of course, it is possible to reliably and immediately tolerate instantaneous vertical and/or horizontal relative displacement of the structure due to earthquakes, etc., and there is no risk of unexpected large stress being applied to the covering. Damage to the cover can be reliably prevented.

In addition, since the cover is an elastic support, there is no need to provide a rotating engagement part, a sliding part, etc. as in the conventional case.
Therefore, there are no parts where plastic deformation occurs, and repairs and the like are not troublesome, and the overall structure is extremely simplified, making the construction work easier.

In addition, when the vertical elastic support is constituted by a U-shaped leaf spring portion and flange portions extending outward or inward from both ends of the U-shaped leaf spring portion, attachment of the vertical elastic support becomes extremely easy, and This has the excellent effect of making it easier to move the cover in the horizontal direction.

Furthermore, by constructing the horizontal elastic support body with a vertical plate part and a leaf spring part folded back in an inverted U-shape from the upper end, it is possible to have a function as a sleeve rain cover in addition to the support function. It also has the effect of preventing wind and rain from entering.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing a conventional example, Fig. 2 is a sectional view showing a first embodiment of an expansion joint according to the present invention, and Figs. 3 A and B are perspective views showing an example of the rain joint fitting. 4 is a sectional view showing a second embodiment of the present invention, FIG. 5 is a perspective view showing an example of the vertical elastic support, and FIG. 6 is a sectional view showing a third embodiment of the present invention. FIG. 7 is a cross-sectional view showing the case where a reinforcing vertical elastic support is attached to the expansion joint shown in the first to third embodiments, and FIG. 8 is a cross-sectional view showing the fourth embodiment of the present invention. figure,
FIG. 9 is a partially omitted perspective view showing an example of the horizontal elastic support. Explanation of codes, 1A, 1B... Building, 2A, 2
B... Connection protrusion, 3... Cover, 18A, 18B
and 37...vertical elastic support, 21A, 21B...
...Horizontal elastic support, 39A, 39B...Mounting flange portion.

Claims (1)

[Scope of Claims] 1. In an expansion joint that joins adjacent structures 1A and 1B, the structure 1A, A cover 3 that is movably attached in vertical and horizontal directions so as to cover the gap between 1B, and the cover 3 and each of the connecting protrusions 2.
Vertical elastic supports 18A, 18B, 37 inserted between the connecting side positions of A, 2B, and horizontal elastic supports 18A, 18B, 37 inserted between the side surface of the cover 3 and each of the connecting protrusions 2A, 2B. An expansion joint comprising supports 21A and 21B. 2. The expansion joint according to claim 1, wherein the vertical elastic supports 18A, 18B are coil springs. 3. The expansion joint according to claim 1, wherein the vertical elastic support 37 is composed of a U-shaped leaf spring and a flange portion whose both ends extend outward or inward. Into. 4. The expansion joint according to any one of claims 1 to 3, wherein the horizontal elastic supports 21A and 21B are coil springs.