JPS63241205A - Apparatus for preparatory shearing deforming and holding of rubber support - 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 [Field of Industrial Application] The present invention provides a rubber bearing formed by pre-snapping lVT between an upper structure such as a bridge girder and a lower structure such as a bridge pier or abutment. The present invention relates to a preliminary shear deformation holding device used when setting.

[Prior art]

Conventionally, in the case of a rubber bearing preliminary shear deformation holding device disclosed in Japanese Patent Application Laid-Open No. 62-45803, the first
As shown in FIGS. 6 to 15, a rubber layer 1 in a rubber support 4 consisting of a rubber +@1 and an upper metal plate 2 and a lower metal plate 5 integrally provided thereon, and an upper part of the rubber layer 1 are shown in FIGS. The lower plate 16 and the upper plate 14 are subjected to preliminary shear deformation (V, the lower plate 16 and the upper plate 14
and a large number of ribs 15 connecting these.
The i1 part support member 16 is disposed in the front part of the rubber support 74, and the lower surface plate 17 and the upper surface plate 18 are connected to the first part. A rear support member 20 made of metal, consisting of a large number of lips 19 connecting these parts, is arranged at the rear of the rubber bearing 4, and the front end of the lower metal plate 3 of the rubber bearing 4 is engaged with the front support member 16. , the rear end of the upper metal plate 2 in the rubber bearing 4 is connected to the rear support member 2
0 and connects the left and right ends of the front support member 16 and the rear support member 20 by connecting the metal connection members 21 disposed on both left and right sides of the rubber bearing 4, and connecting members on both left and right sides. Both ends of 21 are connected to the bolt 12, and detachment prevention protrusions 22 and 23 are provided on each of the upper plates 14 and 18.
Recesses 2 A, , 25 provided in the upper part of the projecting metal plate 2
At the same time, the detachment prevention protrusions 26, 27 provided on each of the lower plates 13, 17 are arranged in recesses 28, 29 provided at the lower part of the lower metal plate A.

[Problem that the invention seeks to solve]

However, in the case of the conventional preliminary shear deformation holding device, the three-dimensional metal front support member 16 and the metal substitute support member 20 extending over the gold plate of the rubber bearing 4 and the left and right connecting members 21 are Since it is arranged so as to surround the entire circumference of the rubber bearing, it is large, heavy and costly.
, and the structure is also complicated.

[Purpose and structure of the invention]

It is an object of the present invention to provide a pre-hardening shear deformation retaining device for a rubber bearing which can advantageously solve the above-mentioned problems.The gist of the present invention is to provide a rubber layer 1 and a The rubber layer 1 in the rubber bearing 4 consisting of the provided upper metal plate 2 and lower metal plate 6 is subjected to preliminary shear deformation so that the upper part of the rubber layer 1 is deviated forward and the lower part is deviated backward, and the rubber layer 1 of the rubber bearing 4 is A rear stone 5 and a lower metal plate 6 are provided on both left and right sides to be engaged with the rear end of the upper metal plate 2.
a retaining plate 7 having a front stone 6 engaged with the front end of the retaining plate 7;
is arranged and protrudes inward from the upper part of the holding plate 7. The upper engagement protrusion 8 (σ is arranged in the upper engagement recess 9 provided at the upper side of the upper metal plate 2, and
The lower engagement protrusion 10 protruding inward from the lower part of the lower metal plate 6 is connected to the lower engagement recess 11 provided at the lower side of the lower metal plate 6.
The left and right retaining plates 7 have bolts 12' at both ends.
There is a preliminary shear deformation holding device for a rubber bearing, characterized in that the device is connected by ef11~.

〔Example〕

Next, the present invention will be explained in detail using illustrated examples.

1 to 4 show a preliminary shear deformation holding device for a comb bearing according to a first embodiment of the present invention, in which the upper surface of a rectangular or square rubber layer 1 with arcuate corners is shown. A rectangular or square upper metal plate 2 and a lower metal plate 6 are integrally fixed to the lower surface, and the upper metal plate 2
An upper locking projection 30 is integrally provided at the center of the upper surface, and a lower locking projection 61 is integrally provided at the center of the lower surface of the lower metal plate 6, thereby forming the rubber support 4.

The rubber layer 1 in the rubber bearing 4 is pre-sheared so that the upper part of the rubber layer 1 is deviated forward and the lower part is deviated backward, and the rubber layer 1 is in the form of a band that is in contact with the left and right sides of the rubber bearing 4. At the rear upper part of the inner surface of the holding plate 70 made of a metal plate,
A rear stopper 5 that engages with the rear end surface of the upper metal plate 2 is fixed by welding, and a front stopper that engages with the front end surface of the lower metal plate 6 is attached to the front lower part of the inner surface of the holding plate 7.・
'P6 is fixed by welding to the outer surface of the retaining plate 7,
Metal auxiliary ribs 62 extending in the front-rear direction are fixed by welding, and upper engagement projections projecting inward from the inner surface of the retainer plate 7 are provided on four parts provided at the upper portions of both the front and rear sides of the retainer plate 7. 8 is fitted and fixed by welding, and a lower engagement part protruding inwardly from the inner surface of the retaining plate 7 is fitted into the recess provided at the lower part of both the front and rear sides of the retaining plate 7. A metal fitting 34 having a protrusion 10 is fitted and fixed by welding.

By the extraction rib 62! l The retaining plate 7 with increased rigidity and the rear stone J? fixed to it. 5 and the front stone groove 6 constitute a stone and groove holding member 35, and a plurality of upper engagement recesses 9 are provided at the upper portions of both left and right sides of the upper metal plate 2 at full intervals in the front and rear direction. , an upper engaging protrusion 8 is arranged in the upper engaging recess 9, and a plurality of lower engaging recesses 11 are arranged at intervals in the front (child direction) at the lower part of both left and right ψII of the lower metal plate 6. A lower engaging protrusion 10 is disposed in the lower engaging recess 11, and further C.
Both ends of the holding plate 7 on both right sides are connected via bolts 12 inserted therethrough.

When the rubber bearing 4 is subjected to pre-walled shear deformation and held in that state, compressive force is applied to the rubber bearing 4 from above and the lower metal plate 6 is fixed. In addition to power metal, rubber layer 1? Shear deformation in the front-back direction, and then arrange the stone and lug holding members 35 on both the left and right sides of the 1 mm support 4, and the stone
The front stopper 6 of the retaining member 35 K is arranged so as to engage with the rear end surface of the lower metal plate 3 (111), and each lower The engaging protrusions 8 are placed in each of the upper engaging recesses 9, and the lower engaging protrusions 10 are placed in each of the lower retaining parts 11, and then both ends of the left and right holding plates 7 are inserted into the row bolts 12. The rubber bearing 4 and each holding member 65 with a stopper are connected by a valve to prevent separation 1, and then the compressive force and the lateral pressure are completely released.

When the rubber layer 1 is given a preliminary shear deformation and the compressive force in the downward direction of the rubber bearing 4 is released, the shear deformation restoring force of the rubber layer 1 causes the head metal plate 2 and the lower metal plate 3 to deform in the longitudinal direction. However, the inclination is caused by the engagement between the upper engagement protrusion 8 and the upper engagement recess 9 and the engagement between the lower engagement protrusion 10 and the pa part engagement recess 11. is prevented by

In addition, the F part metal plate 0, the lower metal plate and the -stone
′! ? The f・1 holding member 5 is made of steel in Example 2'2'.
It is made of 1".

1) to 7 (1) A side shock ζ in the form of Specifically, a steel slate 37 is fixed to the upper surface of a substructure 36 such as a pier or abutment with a plurality of anchor bolts 38, and the above-mentioned support 4 is fixed to the base plate 57. When it is placed, the lower locking protrusion 31 at the bottom of the lower metal plate is inserted into the lower locking recess 69 of the base plate filter 7.
A steel reaction force receiving material 40 is fixed by welding to the upper surface of 7 at a position facing the inner t111+ of both front and rear ends of each holding plate 70, and furthermore, a holding number 7 and a reaction force receiving material are fixed to the above-mentioned PACESO l/-) 37. 40, a screw hole 41 for mounting a jack holder is provided.

A steel sole plate 4 is attached to the upper metal plate 2 of the rubber support 4.
2 is placed, the upper locking protrusion 60 on the upper part of the upper metal plate 2 is fitted into the upper locking recess 46 of the sole plate 42, and the upper portion of the upper locking recess 43 is inserted into the north surface of the sole plate 42. A closing steel cover plate 44 is fixed by welding or adhesive, and a number of anchor members 45 are fixed to the upper part of the sole plate 42 by screwing or welding.

As described above, the rubber bearing 4 held by the preliminary shear deformation holding device is set on the base plate 57, and a sole plate (42't) equipped with the anchor member 45 is placed on the comb bearing 4. After the concrete is poured, concrete 1- composing the superstructure 16 of the a-jo etc. is poured.

When the concrete becomes hard, g 7) 12
is removed from the retaining plate 7, and as shown in FIG. The removal gloss 49 consisting of a hydraulic jack placed between the end of the gloss bracket 47 and the gloss bracket 47
The bolts or the like are used to secure the retaining member 650 with the stopper, and the jack 49 presses and moves both ends of the retaining member 650 with the stopper 5 to the outside.
? - Remove the rubber bearing 4 from the metal plate, remove each retaining protrusion 8, 10 from the metal plate, and remove the jack holder 47, resulting in the state shown in FIG. 9.

Next, a 20% rest stress is introduced into the upper structure 46, and the shrinkage and creep of the upper structure 46 due to the introduction of the prestress, as well as drying shrinkage of the upper structure 46, etc. One part of the pulled container is sheared in the direction of releasing the actual shape.

Figures 10 to 121; 7th J of the tree opening
It shows a sharpening tool, and at the middle upper part of the holding number 7,
r A protrusion 10 is fixed by welding, and four upper engaging portions 9 are provided on both left and right sides of the upper metal plate 2 in the rubber bearing 4 and extend long in the front and back direction. Lower engagement recesses 1 extending long in the front and back direction on both sides
1 is provided, but the configuration of the pond is the same as in the first embodiment.

The glossy bracket 47 may be fixed to the base plate 37 before pouring concrete for the superstructure 46, or the glossy bracket 47 may be fixed to the base plate 37 before pouring concrete for the superstructure 46. fv-) 37, and a detachment jack 49 may be interposed between the jack holder 47 and the end of the holding plate 7.

〔Effect of the invention〕

According to the present invention t.', the rubber R1 and the rubber R1 provided integrally therewith:
f Also, the rubber layer 1 that can be separated from the lower metal plate 2 and the lower metal plate 6 is arranged such that the upper part of the rubber layer 1 is deviated forward and the lower part is deviated backward. A rear stone 5 which is pre-sheared and is engaged with the rear end of the upper metal plate 2 and a front stone 6 which is engaged with the nlt end of the lower metal plate 6 are provided on both left and right sides of the rubber bearing 4. Since the retaining plate 7 is arranged, the pair of retaining members 65 with simple, small and lightweight stones and grooves can hold the goy bearing 4 f'F in the shear deformed state, and 1) The upper engaging protrusion 8 protruding inward from the upper part of the holding plate 7 is connected to the upper part of the rubber bearing 4.
ii. The upper engaging recess is located in the upper part of the side of the metal plate 2, and is protruded inwardly from the lower part of the retaining plate 7.
1. The lower engaging protrusion 10 is provided at the lower side of the lower metal plate 6 in the rubber bearing 4. Since it is disposed within the nid part engaging recess 11, the -7°・1・2
It is possible to eliminate the fear that the support 4 and the stone and groove holding parts paulownia 55 on both the left and right sides may move relative to each other in the vertical direction and come off. [The tilt of the upper metal plate 2 and the lower metal plate 60 in the front-rear direction that is about to occur when a change is applied is expressed as lj'l 'A:)='
The earth part engaging protrusion 8 and the lower engaging protrusion 10 can strongly prevent the occurrence of stones and ξ during transportation and handling due to the bolts 12 connecting both ends of the left and right holding plates 7. It is possible to prevent the holding member 35 from separating from the rubber bearing 4, and furthermore, the rubber bearing preliminary shear deformation holding device of the present invention has a simple and compact structure, so it can be manufactured at low cost, and is also lightweight. Therefore, effects such as ease of handling can be obtained.

[Brief explanation of the drawing]

Figures 1 to 4 show a preliminary shear deformation holding device for a rubber bearing according to a first embodiment of the present invention;
2 is a side view, FIG. 6 is a plan view, and FIG. 4 is a partially enlarged vertical front view. 5 to 7 show a state in which a rubber bearing held by a preliminary shear deformation holding device and a sole plate with an anchor member are set in sequence on a base plate fixed to a lower structure. , Figure 5 is a vertical side view, Figure 6 is a vertical side view.
The figure is a plan view, and FIG. 7 is a LE view. Figure 8 is a plan view showing the state when the retaining member with the stone and groove is removed from the rubber bearing, and Figure 9 is a plan view showing the state when the retaining member with the stone and groove, the material, and the steel jack holder are removed. FIG. 3 is a plan view showing a rubber bearing on a base plate and a sole plate with a partial anchor. 10 to 12 show a preliminary shear deformation holding device for a comb bearing according to a second embodiment of the present invention, in which FIG. 10 is a plan view, FIG. 11 is a side view, and FIG. 12 is a FIG. 13 to 15 show a conventional preliminary shear deformation holding bag with a rubber bearing, in which FIG. 16 is a vertical side view, FIG. 14 is a side view, and FIG. 15 is a plan view. 1: Rubber layer, 2: Upper metal plate, 6: Lower full plate 1.4:
Rubber bearing, 5: Rear stone, 6: Front stopper, 7
: Holding plate, 8: Upper engaging protrusion, 9: Upper engaging recess, 10
: Lower engaging protrusion, 11: Lower engaging recess, 12... Bolt, 30 Two upper locking protrusions, 31: Lower locking protrusion, 35:
Holding member with stopper, 36 - Lower structure, 57: Steel base plate - 38 Near anchor bolt, 39: Lower locking recess, 40: Steel reaction force receiving material, 42: Steel sole plate, 46: Upper retainer Recessed part, 45: Anchor member, 46:
Superstructure, 47: Steel jack holder, 48: Porto,
49: Jack for withdrawal. Figure 4

Claims (1)

[Claims] A rubber bearing 4 consisting of a rubber layer 1 and an upper metal plate 2 and a lower metal plate 3 provided integrally with the rubber layer 1 is pre-sheared so that the upper part of the rubber layer 1 is deviated forward and the lower part is deviated backward. Deformed, on both left and right sides of the rubber bearing 4,
A retaining plate 7 having a rear stopper 5 engaged with the rear end of the upper metal plate 2 and a front stopper 6 engaged with the front end of the lower metal plate 3 is arranged, and a retaining plate 7 is arranged inwardly from the upper part of the retaining plate 7. The protruding upper engagement protrusion 8 is disposed within an upper engagement recess 9 provided at the upper side of the upper metal plate 2, and the lower engagement protrusion 1 protrudes inwardly from the lower part of the retaining plate 7.
0 is arranged in a lower engagement recess 11 provided at the lower side of the lower metal plate 3, and both ends of the left and right holding plates 7 are connected via bolts 12. Pre-shear deformation holding device.