JP2008127867A - Stopper device for limiting displacement of structure, and composite structure type cushioning packing used for the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a stopper device for limiting the displacement of a structure, and a cushioning packing used for the stopper device enhancing cushioning performance to impact. <P>SOLUTION: The stopper device 2 for limiting the displacement of the structure is constituted by providing a lower stopper member 3 with an upward protrusion 5, providing an upper stopper member 4 with a downward opening recess 7, and arranging the upward protrusion 5 in the downward opening recess 7, wherein impact force in case of an earthquake is cushioned by the cushioning packing fitted to the upward protrusion. The cushioning packing used for the stopper device 2 for limiting the displacement of the structure is a composite structure type cushioning packing 1 comprising a cylindrical packing body part 14 of annular cross section formed of a soft elastic material, and hard elastic parts 16 arranged embedded in a peripheral sidewall part in the cylindrical packing body part 14. The hard elastic parts 16 are arranged embedded to extend in the vertical direction of the cylindrical packing body part 14, and formed as hard elastic parts harder than the cylindrical packing body part 14. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a structure displacement limiting (displacement limiting) stopper device for preventing a bridge or other structure from being displaced by a strong horizontal seismic force and falling from an abutment, pier or other support structure, and The present invention relates to a composite structure type buffer packing used for this.

Conventionally, as a displacement limiting stopper device for preventing a structure such as a bridge supported by a rubber bearing from falling from a support structure such as an abutment or a pier due to a strong horizontal seismic force, FIG. As shown in FIG. 10, a locking upward protrusion 34 is integrally provided at the center of the upper surface of the lower stopper member 33 fixed to the upper portion of the support structure 23, and is fixed to the lower portion of the upper structure 22. A locking downward opening recess 36 is provided in the center of the lower surface of the upper stopper member 35, the upward protrusion 34 is disposed in the downward opening recess 36, and the structure 22 is provided between the upward protrusion 34 and the downward opening recess 36. The thing of the structure which provided the clearance gap L which accept | permits expansion / contraction of this is known (for example, refer patent document 1).
In the case of the stopper device 37 having the structure shown in FIGS. 9 and 10, since the stopper device is provided with the downward opening recess 36 and the upward protrusion 34 disposed on the inside thereof, the impact is applied when a strong horizontal force is applied. There is a problem that power increases.
In order to alleviate the impact force, as shown in FIGS. 11 and 12, it is considered to provide the projection 34 with a cylindrical cushioning packing 38 made of soft chloroprene rubber and having a uniform cross section. There is also.
No. 02-48494

The conventional shock-absorbing packing is a cylindrical shock-absorbing packing made of soft chloroprene rubber with a uniform cross-section, so that it has a shock-absorbing effect, but the upper structure becomes a continuous girder. As a result, a higher buffering performance is desired.
The present invention uses a composite structure type buffer packing used in a structure displacement limiting (movement limiting) stopper device having a higher shock absorbing performance than that of the conventional buffer packing and the composite structure type buffer packing. It is an object of the present invention to provide a structure displacement limiting stopper device.

In order to achieve the above object, in the composite structure type shock absorbing packing used in the structure displacement limiting stopper device according to the first aspect of the present invention, a locking upward projection is provided on the upper surface of the lower stopper member fixed to the support structure. And a downward opening recessed portion for locking is provided on the lower surface of the upper stopper member fixed to the structure, and the upward protrusion is disposed in the downward opening recessed portion for locking and is used for buffering to be fitted to the upward protrusion In the shock-absorbing packing used in the structure displacement limiting stopper device that cushions the impact force at the time of earthquake by the packing, the shock-absorbing packing has a cylindrical elastic packing material main body portion having an annular cross section. A hard elastic portion embedded in a peripheral side wall portion of the cylindrical packing main body portion, and the hard elastic portion extends in the vertical direction of the cylindrical packing main body portion. It is embedded disposed so that, and is characterized in that there is a the tubular packing main body hard elastic portion harder than unit.
In the second invention, in the composite structure type shock absorbing packing used in the structure displacement limiting stopper device of the first invention, the hard elastic portion is spaced in the circumferential direction of the cylindrical packing main body portion made of soft elastic material, It is characterized by being embedded and arranged in the cylindrical packing body by integral molding.
In the third invention, in the cushioning packing used in the structure displacement limiting stopper device of the first invention, the hard elastic portion is embedded and arranged integrally so as to be continuous in the circumferential direction of the cylindrical packing main body portion. It is characterized by.
In the composite structure type shock-absorbing packing used in the structure displacement limiting stopper device of the fourth aspect of the invention, an upper protrusion for locking is provided on the upper surface of the lower stopper member fixed to the support structure, and the upper part fixed to the structure. A downward opening recess for locking is provided on the lower surface of the stopper member, and the upward projection is arranged in the downward opening recess for locking, and shock force at the time of earthquake is generated by a cushioning packing fitted to the upward projection. In the buffer packing used in the structure displacement limiting stopper device configured to be buffered, the buffer packing includes a cylindrical packing main body portion having an annular cross section and a hard elastic material, and a periphery of the cylindrical packing main body portion. A soft elastic portion embedded in the side wall portion, and the soft elastic portion is embedded and disposed so as to extend in the vertical direction of the cylindrical packing main body portion, One characterized in that than the tubular packing main body portion is a soft elastic portion of flexible.
In the fifth invention, in the composite structure type buffer packing used in the structure displacement limiting stopper device according to any one of the first to fourth inventions, the composite structure type buffer packing is made of synthetic rubber, natural rubber or high damping rubber. It is characterized by being comprised by any one or several material of these.
In the sixth invention, in the composite structure type shock absorbing packing used in the structure displacement limiting stopper device according to any one of the first to fifth inventions, the outer peripheral wall portion and the inner peripheral wall portion of the composite structure type shock absorbing packing include: The cylindrical pressure-resistant reinforcing fibers are respectively embedded and arranged integrally.
According to the seventh aspect of the invention, in the structure displacement limiting stopper device, an upward protrusion for locking is provided on the upper surface of the lower stopper member fixed to the support structure, and is locked to the lower surface of the upper stopper member fixed to the structure. A downward opening recess is provided, and the upward protrusion is disposed in the downward opening recess for locking in a state in which the upward packing is fitted with a shock absorbing packing, and the shock absorbing packing is fitted into the upward protrusion, In the structure displacement limiting stopper device for buffering the impact force at the time of an earthquake, the buffer packing is the composite structure type buffer packing according to any one of the first to sixth inventions. .

According to the first and fourth inventions, the impact buffering performance can be remarkably improved and the durability of the composite structure type buffer packing can be improved as compared with the conventional cushioning packing made of soft chloroprene rubber.
According to the second aspect of the invention, the hard elastic portion is embedded in the cylindrical packing main body portion by being integrally formed at intervals in the circumferential direction of the soft elastic material cylindrical packing main body portion. Even if a force acts, the shock absorbing performance against impact can be improved as compared with the conventional shock absorbing packing.
According to the third invention, since the hard elastic portion is integrally embedded so as to be continuous in the circumferential direction of the cylindrical packing main body portion, even if an impact force is applied from any direction in the lateral direction, The shock-absorbing performance against impact can be improved as compared with the shock-absorbing packing.
According to the fifth invention, since it is composed of any one or more materials of synthetic rubber, natural rubber, or high damping rubber, it is possible to obtain a composite rubber type composite cushioning packing made of hard and soft vulcanized integral molding. Natural rubber composite structure type buffer packing made of hard and soft vulcanized integral molding, or synthetic rubber and natural rubber composite structure type buffer packing made of hard synthetic rubber and soft natural rubber. Or a composite structure type shock absorbing packing made of a composite rubber of high damping rubber and synthetic rubber or natural rubber, and the degree of freedom of design of the composite structure type shock absorbing packing having various buffering performances can be remarkably increased.
According to the sixth invention, since the cylindrical pressure-proof reinforcing fibers are embedded in the inner peripheral wall portion and the outer peripheral wall portion of the composite structure type shock absorbing packing, the upward projection on the lower stopper member at the time of an earthquake collides with the upper stopper member. Even so, the risk of the composite structure type shock-absorbing packing being damaged such as cracks can be eliminated, and the durability of the composite structure type shock-absorbing packing against impacts can be remarkably improved.
According to the seventh aspect of the present invention, since the composite structure type shock absorbing packing with significantly improved shock buffering performance is incorporated as compared with the case of the conventional structure displacement limiting stopper device, When the object relatively moves horizontally, the upper stopper member can be significantly buffered and engaged with the upward projection, and therefore, a structure displacement limiting stopper device with significantly improved shock absorbing performance, can do. In addition, even if a lateral impact force is applied, a structure displacement limiting stopper device with improved shock-absorbing performance compared to conventional shock-absorbing packings can be used. However, it is possible to use a structure displacement limiting stopper device with improved shock-absorbing performance compared to conventional shock-absorbing packings, or a composite structure type using any one or more materials of synthetic rubber, natural rubber or high-damping rubber. It is possible to use a buffer packing to make a structure displacement limiting stopper device that greatly increases the degree of freedom of design of composite structure type buffer packing with various buffering performance, or the upward protrusion on the lower stopper member at the time of earthquake is the upper stopper member Even if it collides, the risk of the composite structure shock-absorbing packing being damaged, such as cracks, can be eliminated. Can be a structure displacement restriction stopper device remarkably improves the durability.

  Next, the present invention will be described in detail based on the illustrated embodiment.

  1 and 2 show an embodiment of a composite structure type shock absorbing packing 1 of the present invention used for a structure displacement limiting stopper device, FIG. 1 shows a transverse plan view, and FIG. A partially longitudinal side view is shown, FIG. 3 shows a modified composite structure type shock absorbing packing 1, and FIGS. 4 and 5 show a structure displacement limit incorporating the composite structure type shock absorbing packing 1 of the present invention. A stopper device 2 is shown.

  4 and 5 show a structure displacement limiting stopper device 2 incorporating the composite structure type shock absorbing packing 1 of the present invention. The structure displacement limiting stopper device 2 is a supporting structure 23. FIG. The steel lower stopper member 3 is fixed to the upper structure 22 and the steel upper stopper member 4 is fixed to the upper structure 22. In the illustrated embodiment, a plurality of female screw cylinders 8 are provided below the lower stopper member 3. A male screw portion at the upper end of a lower anchor member 9 made of a steel rod is screwed into the female screw cylinder 8, and the lower anchor member 9 is fixed to the female screw cylinder 8 by welding. A locking upward protrusion 5 having a circular cross section is integrally provided at the center of the upper surface 10 of the head 3.

  In addition, a plurality of (for example, four) rubber positioning pieces 6 are provided on the upper surface 10 of the lower stopper member 3 around the upward protrusion 5 at intervals in the peripheral direction of the protrusion. The lower part of the rubber positioning piece 6 is fixed to the lower stopper member 3.

  A female screw hole is provided in the top plate 11 at the upper part of the upper stopper member 4, and a male screw part at the lower end of the upper anchor member 18 made of a steel rod having a flange at the upper end is screwed into the female screw hole, and the upper anchor member 18 is fixed to the top plate 11 by welding, and in the center of the lower surface 19 of the upper stopper member 4 is provided a downward opening recess 7 for locking such as a circle or an oval extending in the longitudinal direction of the structure. .

  In the structure displacement limiting stopper device 2 of the present invention, the composite structure type buffer packing 1 made of a rubber elastic material is fitted (attached or fitted) by dropping or light press-fitting to the upward locking projection 5. Has been. The inner peripheral surface side of the composite structure type shock-absorbing packing 1 is arranged in the state of being close to or in contact with the upward locking projection 5, and the outer peripheral surface of the composite structure type shock-absorbing packing 1 faces downward in the upper stopper member 4. With respect to the inner peripheral surface of the opening recess 7, a gap L that allows the amount of expansion and contraction movement due to the temperature change of the upper structure 22 is provided in the bridge axis direction. Closely arranged.

Here, the structure of the composite structure type buffer packing 1 will be described.
The composite structure type shock-absorbing packing 1 includes a cylindrical packing main body portion 14 having a circular cross section and a soft elastic material, and a hard elastic portion 16 embedded in a peripheral side wall portion 15 of the cylindrical packing main body portion 14. The hard elastic portion 16 is embedded and arranged so as to extend in the vertical direction of the cylindrical packing main body portion 14, and is a hard elastic portion 16 that is harder than the cylindrical packing main body portion 14. The hard elastic portion 16 and the cylindrical packing main body portion 14 made of soft elastic material are integrally manufactured as a whole by vulcanization integral molding. Further, on the inner peripheral wall portion side and the outer peripheral wall portion side in the cylindrical packing main body portion 14, an inner peripheral reinforcing fabric 12a and an outer peripheral reinforcing fabric 12b made of fibers for pressure resistance and impact reinforcement are respectively embedded and disposed. The entire packing including the elastic portion 16 is integrally vulcanized. As the reinforcing cloths 12a and 12b, synthetic fiber cloth or canvas is embedded and arranged.

The combination form of the soft elastic material cylindrical packing body 14 and the hard elastic part 16 is a synthetic rubber such as chloroprene rubber (CR) or styrene-butadiene rubber (SBR) or a natural rubber material. The cylindrical packing main body portion 14 of soft elastic material having a rubber shore hardness of 40 to 60 degrees and the hard elastic portion 16 of 50 to 80 degrees may be used. For example, a combination of soft 40 degrees and hard 50 degrees, It may be in the form of a composite structure type shock-absorbing packing 1 that is integrally vulcanized and molded by a combination of 55 degrees and 80 degrees hard, or a combination of soft 60 degrees and 80 degrees hard.
In addition to the above, a combination form of soft rubber and hard rubber of high damping rubber may be used, or any one kind of soft rubber of natural rubber, synthetic rubber and high damping rubber, and hard of other kinds. A combination form with rubber may be used.
Further, the hard and soft material portions in the above-described embodiment are replaced, and instead of the cylindrical packing main body portion 14 made of soft elastic material, this is used as a hard elastic portion made of hard rubber, and the hard elastic portion 16 is made of a soft elastic material. The soft elastic portion may be used. That is, the composite structure type shock-absorbing packing 1 includes a cylindrical packing main body portion having a circular cross section and a hard elastic material, and a soft elastic portion embedded in a peripheral side wall portion of the cylindrical packing main body portion. The elastic part may be embedded and arranged so as to extend in the vertical direction of the cylindrical packing main body part, and may be a soft elastic part that is softer than the cylindrical packing main body part. A similar buffering effect against impact force can be exhibited.

As the cross-sectional shape of the hard elastic portion 16, in addition to the triangular shape as shown in the figure, an inverted triangle, a circle, a quadrangle, a rhombus, a trapezoid (radial direction) arranged so that the inner diameter side is the top in the radial direction. (Including inverted trapezoidal shape with the positions of the upper and lower bases reversed), polygons (similar to the case of the trapezoidal shape, the side of the inner diameter side in the radial direction or the position of the outer side and the inverted polygon Such a columnar body having a cross-sectional shape may be used as the composite structure type buffer packing 1 integrated by vulcanization integral molding. Also, a configuration in which the hard elastic portions 16 having a plurality of cross-sectional shapes as described above are embedded and arranged so as to be continuous in the circumferential direction, or a configuration in which two or more hard elastic portions 16 are incorporated at intervals in the circumferential direction as shown in FIG. Good.
Although not shown, when the present invention is carried out, the hard elastic portion 16 that is integrally embedded in the cylindrical packing main body portion 14 made of soft elastic material and vulcanized is directed toward the central portion in the vertical direction. In the longitudinal section, the outer side in the radial direction may be concave toward the inner side, and in this way, an elastic material such as rubber can suppress the point where the spring constant at the center of the rubber where there is no escape from deformation increases, The spring constant in the vertical direction of the structural shock-absorbing packing 1 can be equalized, and the entire vertical shock-absorbing packing 1 can be equalized in the vertical direction so that the compression force can be borne.
Since the structure displacement limiting stopper device 2 of the present invention mainly acts in the bridge axis direction, the structure as in the above embodiment is provided at least on both side walls in the bridge axis direction of the composite structure type shock-absorbing packing 1. It is good to.

  As other planar forms of the composite structure type shock absorbing packing 1, the outer shape may be a rectangular shape in plan view, the inner peripheral side shape may be a circular shape in plan view, and the upward locking projection 5 is a cross-sectional view. In the case of a rectangular shape, the composite structure type shock-absorbing packing 1 may have a shape in which the inner peripheral shape is rectangular in plan view and the outer shape is circular or rectangular in plan view.

  The composite structure type shock absorbing packing 1 as described above was fitted to the upward projection 5, and a weight type impact test was performed. The structure of the weight type impact test apparatus 17 shown in FIG. 6 will be briefly described. The upper stopper member 4 in the structure displacement limiting stopper apparatus 2 is supported on the lower stopper member 3 so as to be movable in the lateral direction via rollers. In this state, the upper stopper member 4 and the impact receiving plate 20 are connected by the load cell 21 and the connecting member 24, and the swing angle of the weight 25 is changed from the height 1225mm to the impact receiving plate 20 (the collision speed). This is a weight type impact test apparatus 17 capable of changing

A shock absorber 17 as shown in FIG. 6 and a cushioning packing material 38 having a rubber shore hardness of 55 degrees with a conventional chloroprene rubber as shown in FIGS. The composite structure type buffer packing 1 having a composite structure as shown in the figure is fitted to the upward locking projections 5 and the swing angle is 30 degrees (1.8 m / sec at the collision speed) and 40 degrees (at the collision speed). 2.4 m / sec) and 55 degrees (3.2 m / sec at the collision speed), the result of the impact test is shown in FIG. 8, and the passive load acting on the impact receiving plate 20 (kN ) And the response time T (sec), FIG. 7 shows a case where the swing-up angle is 40 degrees (in the collision speed, 2.4 m / sec) as a representative form showing the overall tendency. The conventional buffer packing material 38 and the composite structure type buffer packing 1 of the present invention are for static design horizontal strength of 400 kN, and their outer diameter is 144 mm, inner diameter 104 mm, thickness 20 mm, height 70 mm. It is.
The conventional buffer packing material 38 used in the experiment is a buffer packing material 38 with a rubber shore hardness of 55 degrees made of chloroprene rubber, and its elongation at break is 450%. In addition, the composite structure type shock absorbing packing 1 of the present invention used in the experiment is a natural cylindrical soft cylindrical packing main body portion 14 (breaking elongation is 550%) made of natural rubber with a hardness of 80 degrees (breaking elongation is 300). %) In the packing circumferential direction so that the bottom is located at a position 3 mm from the inner circumferential side in the packing thickness direction with a large number of flat isosceles triangles (bottom 8.8 mm and height 14 mm). In addition to being placed in the nectar, it is embedded in the soft cylindrical packing main body 14 on the inner peripheral side and outer peripheral side, and vulcanized and integrally molded.

FIG. 7 is a graph when the swing-up angle is 40 degrees (2.4 m / sec at the collision speed). Similarly, the swing-up angle is 30 degrees (1.8 m / sec at the collision speed) and 55 degrees. The peak value of the passive load in the graph (the collision speed is 3.2 m / sec) (not shown) is plotted, which shows the relationship between each collision speed and the passive load shown in FIG.
As shown in the representative form of FIG. 7, the peak of the passive load (kN) is 163.8 kN in the conventional buffer packing (conventional type), whereas in the composite structure type buffer packing of the present invention, it is 107. 0.1 kN, which is a significant reduction (approximately 35% reduction compared to conventional chloroprene rubber).
In the passive load shown in FIG. 8, the passive load of the conventional cushioning packing material 38 (denoted as the conventional type) is 96.6 kN at a collision speed of 1.8 m / sec, 163.8 kN at 2.4 m / sec, Whereas it was 209.3 kN at 3.2 m / sec, with the composite structure type buffer packing 1 of the present invention (denoted as composite structure type), the collision speed was 78.1 kN at 1.8 m / sec. It was 107.9 kN at 2.4 m / sec and 125.1 kN at 3.2 m / sec.
As can be seen from the figure, in the case of the structure displacement limiting stopper device 2 fitted with the composite structure type buffer packing 1 of the present invention, the conventional structure fitted with the conventional buffer packing material 27 of homogeneous chloroprene rubber. Compared with the case of the object displacement limiting stopper device 2, 20 to 30 percent of the passive load was reduced.
In the composite structure type shock absorbing packing 1 according to the present invention, the triangular hard elastic portion 16 and the triangular soft elastic portion are alternately arranged in the packing circumferential direction at the center of the packing thickness in a plan view. Since the cylindrical packing main body 14 made of a soft elastic material is made of a hard elastic material, the hard elastic portion 16 is a soft elastic portion, and the inner peripheral side reinforcing cloth 12a and the outer peripheral side are only in the central portion in the thickness direction. The same tendency is assumed even when the reinforcing cloth 12b is reinforced so as to be embedded.

  As described above, a cylindrical packing main body portion 14 made of a soft elastic material and a hard elastic portion 16 embedded and arranged integrally therewith, or a cylindrical packing main body portion made of a hard elastic material, Compared with the case where a conventional soft material packing 38 is used, the composite structure type buffer packing 1 fitted to the upward projection 5 is formed by forming a composite structure with a soft elastic portion embedded and arranged by integral molding. When pressed at the initial stage of the collision, the displacement is small with respect to a high load. Therefore, even if the collision force due to the same horizontal force acts on the upward projection on the upper structure 22 during the earthquake, the impact force is relaxed and transmitted. be able to.

  When carrying out the present invention, the composite structure type shock-absorbing packing 1 has a cylindrical shape. However, as the composite structure-type shock absorbing packing 1 having a ceiling portion, a composite structure type in which a peripheral wall portion and a ceiling portion are integrated. It is good also as a buffer packing.

  The upper stopper member 4 is placed on the upper part of the rubber positioning piece 6 fixed to the lower stopper member 3, and a gap is formed between the upper surface 10 of the lower stopper member 3 and the lower surface 19 of the upper stopper member 4. G is provided.

  When installing the structure displacement limiting stopper device 2 as described above, first, the downward opening recess 7 in the stopper device 2 is arranged so as to extend in the longitudinal direction of the structure 22 such as a concrete bridge girder to be built. The lower anchor member 9 and the lower portion of the lower stopper member 3 are embedded and fixed to a concrete support structure 23 such as a pier or an abutment. Next, a groove-shaped mold (not shown) for constructing the structure 22 is assembled, and the upper stopper member 4 is fitted into an opening provided in the bottom plate of the mold, and then the mold is formed. The structure 22 is constructed by placing structural concrete in a frame.

  Although not shown in the side of the structure displacement limiting stopper device 2, a support device is installed between the support structure 23 and the structure 22.

  As described above, the structure expansion / contraction allowance gap is provided between the both ends in the bridge axis direction of the downward opening concave portion 7 in the structure displacement limiting stopper device 2 and the upward protrusion 5 fitted with the composite structure type buffer packing 1. Since L is provided, the structure 22 can freely expand and contract.

  In the present invention, when the structure 22 tries to move horizontally due to the horizontal seismic force, the composite structure type shock absorbing packing 1 first receives the pressing force. Thus, the composite structure type shock-absorbing packing 1 surely exhibits a buffering action. And the movement of the structure 22 is restrict | limited in the state supported by the buffer.

  Although illustration is omitted, when the structure 22 is a steel structure, the upper stopper member is attached to the steel structure by fixing the steel structure to the top plate 11 with bolts. You can do it.

  As in the above-described embodiment, a structure expansion / contraction allowance gap L is generally provided between both ends of the downward opening recess 7 in the longitudinal direction of the structure and the upward projection 5, but the upper structure 22 is provided. Is a planar arcuate curve, a gap is required that can move in two directions, the bridge axis direction and the bridge axis perpendicular direction.

The rubber positioning piece 6 is necessary only for positioning the lower stopper member 3 and the upper stopper member 4 in the vertical direction and providing a predetermined vertical gap G therebetween. The rubber positioning piece 6 may be omitted after the structure 22 is installed and the lower stopper member 3 that does not bear the vertical load of the structure 22 is installed.
When the amount of lateral movement of the upper stopper member 4 relative to the lower stopper member 3 is relatively small, the upper portion of the rubber positioning piece 6 is elastically deformed, and the amount of lateral movement of the upper stopper member 4 relative to the lower stopper member 3 is more than a certain level. Then, the rubber positioning piece 6 slides on the lower surface 19 of the upper stopper member 4.

  The rubber positioning piece 6 may be fixed to either the lower stopper member 3 or the upper stopper member 4. For example, contrary to the above embodiment, the upper portion of the rubber positioning piece 6 is previously placed on the upper stopper member 4. It may be fixed to.

  Further, the number of the rubber positioning pieces 6 may be 3 or 5 or more. Alternatively, the rubber positioning piece 6 may be slidable on the boundary surface between the upper and lower positioning pieces. As a fixing means of the rubber positioning piece 6, for example, it may be fixed by a screw or an adhesive.

  According to the above embodiment, when the concrete for structure is placed so as to embed the upper portion of the upper stopper member 4 with the lower stopper member 3 fixed to the support structure 23, the lower stopper member 3 is faced upward. Three or more rubber positioning pieces 6 provided between the lower stopper member 3 and the upper stopper member 4 around the protrusion 5 and the downward opening concave portion 7 of the upper stopper member 4, and the upper surface 10 and the upper portion of the lower stopper member 3. A required gap G can be ensured between the lower surface 19 of the stopper member 4.

  Moreover, one end of the positioning piece 6 in the vertical direction is fixed to one of the lower stopper member 3 and the upper stopper member 4, and the other end of the positioning piece 6 in the vertical direction is the lower stopper member 3 and the upper stopper member. Since the lower stopper member 3 and the upper stopper member 4 are laterally positioned relative to each other, the lower stopper member 3 and the upper stopper member 4 are positioned relative to each other. The structural expansion allowance gap L can be secured, and the upper stopper member 4 is moved laterally relative to the lower stopper member 3 due to vibration, impact or the like when the concrete for construction is placed. Since the positioning piece 6 is made of rubber, resistance to expansion and contraction of the structure 22 is small, so that the structure 22 can be freely expanded and contracted. Can.

It is a cross-sectional top view which shows one Embodiment of the composite structure type | mold buffer packing of this invention used for the stopper apparatus for structure displacement restriction | limiting. It is a partial vertical side view of the composite structure type | mold buffer packing of this invention shown in FIG. It is a cross-sectional top view which shows other embodiment of the buffer packing of this invention used for the stopper apparatus for structure displacement restriction | limiting. It is a partially vertical side view showing a state in which the composite structure type buffer packing of the present invention is fitted to the upward protrusion in the structure displacement limiting stopper device. FIG. 5 is a transverse plan view of the structure displacement limiting stopper device shown in FIG. 4. It is a schematic side view which shows an impact test apparatus. It is a figure which shows the relationship between the response time in the case of the conventional buffer packing, and the case of the composite structure type buffer packing of this invention, and a passive load. It is a figure which shows the relationship between the collision speed and the passive load in the case of the conventional buffer packing and the composite structure type buffer packing of the present invention. It is a partial vertical side view which shows one form of the conventional stopper device for structure displacement limitation. FIG. 10 is a transverse plan view of the structure displacement limiting stopper device shown in FIG. 9. It is a partial longitudinal cross-sectional side view which shows one form of the structure displacement limitation stopper apparatus provided with the conventional buffer packing. FIG. 13 is a transverse plan view of the structure displacement limiting stopper device shown in FIG. 12.

Explanation of symbols

G gap
L Structure expansion / contraction allowance gap 1 Composite structure type shock absorbing packing 2 Structure displacement limiting stopper device 3 Lower stopper member 4 Upper stopper member 5 Locking upward protrusion 6 Rubber positioning piece 7 Downward opening recess 8 Female screw cylinder 9 Lower anchor member DESCRIPTION OF SYMBOLS 10 Upper surface 11 Top plate 12a Inner periphery side reinforcement cloth 12b Outer periphery side reinforcement cloth 14 Cylindrical packing main-body part 15 Peripheral side wall part 16 Hard elastic part 17 Weight type impact test apparatus 18 Upper anchor member 19 Lower surface 20 Impact receiving plate 21 Load cell 22 Structure 23 Support structure 24 Connecting member 25 Weight 33 Lower stopper member 34 Upward protrusion 35 for locking Upper stopper member 36 Downward recessed portion 37 for locking Structure displacement limiting stopper device 38 Buffer packing

Claims (7)

  An upward protrusion for locking is provided on the upper surface of the lower stopper member fixed to the support structure, and a downward opening recess for locking is provided on the lower surface of the upper stopper member fixed to the structure. In the shock-absorbing packing used in the structure displacement limiting stopper device, the shock-absorbing packing disposed in the stop-opening recess for stopping and buffering the impact force at the time of an earthquake by the shock-absorbing packing fitted into the upward protrusion. The shock-absorbing packing includes a cylindrical packing main body portion having a circular cross section and a soft elastic material, and a hard elastic portion embedded in a peripheral side wall portion of the cylindrical packing main body portion. A structure characterized in that it is embedded and arranged so as to extend in the vertical direction of the cylindrical packing main body part and is a hard elastic part harder than the cylindrical packing main body part Composite structure type buffer packing used in the displacement restricting stopper device.   The said hard elastic part is embedded and arrange | positioned by integral molding at the cylindrical packing main-body part at intervals in the circumferential direction of the cylindrical packing main-body part of a soft elastic material property. Composite structure type shock absorbing packing used for a structure displacement limiting stopper device.   The composite structure type buffer for use in a structure displacement limiting stopper device according to claim 1, wherein the hard elastic portion is integrally embedded so as to be continuous in a circumferential direction of the cylindrical packing main body portion. Packing.   An upward protrusion for locking is provided on the upper surface of the lower stopper member fixed to the support structure, and a downward opening recess for locking is provided on the lower surface of the upper stopper member fixed to the structure. In the shock-absorbing packing used in the structure displacement limiting stopper device, the shock-absorbing packing disposed in the stop-opening recess for stopping and buffering the impact force at the time of an earthquake by the shock-absorbing packing fitted into the upward protrusion. The shock-absorbing packing includes a cylindrical packing main body portion having a circular cross section and a hard elastic material, and a soft elastic portion embedded in a peripheral side wall portion of the cylindrical packing main body portion. A structure characterized in that it is embedded and arranged so as to extend in the vertical direction of the cylindrical packing main body part, and is a soft elastic part softer than the cylindrical packing main body part Composite structure type buffer packing used in the displacement restricting stopper device.   The composite structure type shock-absorbing packing is made of any one or more materials of synthetic rubber, natural rubber, or high damping rubber. Cushioning packing used for stopper devices.   The structural displacement according to any one of claims 1 to 5, wherein a cylindrical pressure-proof reinforcing fiber is integrally embedded in each of the outer peripheral wall portion and the inner peripheral wall portion of the composite structure type cushioning packing. A shock-absorbing packing used for the limit stopper device.   An upward protrusion for locking is provided on the upper surface of the lower stopper member fixed to the support structure, and a downward opening recess for locking is provided on the lower surface of the upper stopper member fixed to the structure. A structure displacement in which the upward protrusion is disposed in the downward opening recess for locking in a state where the packing is fitted, and the impact force at the time of an earthquake is buffered by the shock-absorbing packing fitted to the upward protrusion. 6. A structure displacement limiting stopper device according to claim 1, wherein the buffer packing is a composite structure type buffer packing according to any one of claims 1 to 5.

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