JP2704489B2 - Road expansion connection device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a road expansion and contraction connection device for a road bridge or the like on which an automobile runs.

[0002]

2. Description of the Related Art Conventionally, a device disclosed in Japanese Patent Publication No. 63-15404 is known as a device for connecting an end of an elevated road so as to be able to expand and contract.

[0003]

In the case of the conventional elevated road expansion / contraction connection device, since a metal plate is not provided in the middle lower portion of the expansion joint material, the upper surface of the expansion joint material is provided above the expansion joint gap. When the vehicle wheel is mounted, the expansion joint material is strongly pressed against the comb-shaped support plate, and the lower surface of the expansion joint material is deformed, so that the durability of the expansion joint material deteriorates and When the lower surface of the joint material is deformed, the elasticity of the expansion joint material deteriorates.

[0004]

SUMMARY OF THE INVENTION In order to advantageously solve the above-mentioned problems, in the road telescopic connection device of the present invention, a metal bearing frame 2 is fixed to the upper part of the opposing road main body 1, and A stainless steel plate 4 is fixed to the upper surface of the intermediate horizontal plate 3 of the support frame 2, and a sliding rubber bearing 5 extending in the longitudinal direction of the bearing frame 2 is mounted on each stainless steel plate 4, and the sliding rubber bearing 5 Both ends in the width direction are fixed to the support frame 2 and the fiber-mixed rubber layer 7 and the metal plate 8 are formed on the upper surface of the tetrafluoroethylene plate 6 fixed to the lower surface of the intermediate portion of the sliding rubber support 5. Are fixed in a stacked state, and a lower inner groove 9 and a lower outer groove 10 are provided between the metal plate 8 and the fixing portion of the sliding rubber bearing 5, and the lower inner groove 9 in the sliding rubber bearing 5 is provided. Lower surface between the lower outer groove 10 and An ethylene tetrafluoride plate 11 is fixed, an upper intermediate groove 12 is provided above the metal plate 8 above the sliding rubber bearing 5, and a fixing portion between the upper intermediate groove 12 and the sliding rubber bearing 5 is provided. The upper outer metal plate 14 is embedded and fixed between the upper middle groove 12 and the upper outer groove 13.

[0005]

FIG. 5 shows a sliding rubber bearing 5 used in an embodiment of the present invention. An ethylene tetrafluoride plate 6 is fixed to a middle lower portion of a rubber member 15 extending in the width direction of the road. A fiber mixed rubber layer 7 is disposed on the upper surface of the tetrafluoroethylene plate 6, and a metal plate 8 made of a steel plate is disposed on the upper surface of the fiber mixed rubber layer 7. An intermediate rubber layer of the rubber material 15 is disposed, and the rubber layer, the metal plate 8, the fiber-mixed rubber layer 7, and the ethylene tetrafluoride plate 6 are integrally fixed by an adhesive or the like.

A washer 17 having a long hole 16 extending in the longitudinal direction of the rubber member 15 is disposed at both ends in the width direction of the rubber member 15 at intervals in the longitudinal direction of the rubber member 15. The washer 17 is embedded and fixed below the rubber material 15, and an opening 18 is provided above the washer 17, and a cap locking annular groove 19 is provided at an intermediate portion of the opening 18 in the height direction. Is provided.

A lower inner groove 9 and a lower outer groove 10 extending in the longitudinal direction of the rubber material 15 are provided between the washer 17 on both sides in the width direction of the rubber material 15 and the metal plate 8. The outer groove 10 is shallower than the lower inner groove 9, and an ethylene tetrafluoride plate 11 is fixed to the bottom surface between the lower inner groove 9 and the lower outer groove 10 with an adhesive or the like.

An upper intermediate groove 12 extending in the longitudinal direction of the rubber material 15 is provided at an upper portion on both sides in the width direction of the metal plate 8, and between each upper intermediate groove 12 and each sharp opening 18. An upper outer groove 13 extending in the longitudinal direction of the rubber material 15 is provided, and a horizontal upper outer metal plate 14 extending in the longitudinal direction of the rubber material 15 is provided between the upper intermediate groove 12 and the upper outer groove 13. Embedded and fixed.

FIGS. 1 to 4 show an embodiment of the present invention, in which a pair of road bodies 1 are arranged with a gap 20 therebetween, and an L-shaped recess 21 is formed at the upper end of each road body 1. The lower half of the inverted reinforcing bar 22 is embedded and fixed in the lower part of the L-shaped recess 21, and the upper half of the anchoring reinforcing bar 22 is arranged in the L-shaped recess 21.

An outer upper vertical plate 23 is integrally fixed to one end of the intermediate horizontal plate 3 in the longitudinal direction of the road body 1,
In addition, an inner lower vertical plate 24 is integrally provided at the other end of the road main body 1 in the longitudinal direction of the intermediate horizontal plate 3 to form the steel support frame 2. 3 and the inner lower vertical plate 24 are arranged at intervals in the longitudinal direction, and are fixed to the intermediate horizontal plate 3 and the inner lower vertical plate 24 by welding or the like. A bolt insertion hole 26 is provided at a close position, and a female screw cylinder 27 is fixed to the lower surface of the intermediate horizontal plate 3 at a position corresponding to the bolt insertion hole 26 by welding, and a lower half of the female screw cylinder 27 is provided. An L-shaped anchor bolt 28 is screwed into the portion.

A plurality of horizontal reinforcing bars 29 are arranged over the plurality of fixing reinforcing bars 25 and the plurality of anchor reinforcing bars 22, and the anchor reinforcing bars 22, the fixing reinforcing bars 25, and the horizontal reinforcing bars 2 are provided.
9 is connected by welding or a binding wire, and between the L-shaped recess 21 and the support frame 2 in the road body 1,
A time-curable material 30, such as concrete or high strength mortar, is filled.

As shown in FIGS. 1 to 4, the stainless steel plate 4 shown in FIG. 5 is placed on the intermediate horizontal plate 3 of the bearing frame 2 fixed to the ends of the pair of road bodies 1 and welded or welded. The sliding rubber bearing 5 fixed by an adhesive or the like is placed on the intermediate horizontal plate 3 and the stainless steel plate 4 in the bearing frame 2, and the width direction side of the sliding rubber bearing 5 is the outer upper vertical plate 23. And a large number of bolts 31 are inserted into the washer 17 and the bolt insertion through-hole 26 of the intermediate horizontal plate 3 and screwed into the female screw cylinder 27 to be tightened and connected. Next, the covering cap 32 made of an elastic material is press-fitted into the opening 18.

[0013]

According to the present invention, a metal bearing frame 2 is fixed to the upper portion of the opposing road body 1, and a stainless steel plate 4 is fixed to the upper surface of the intermediate horizontal plate 3 of each bearing frame 2. A sliding rubber bearing 5 extending in the longitudinal direction of the bearing frame 2 is placed on each stainless steel plate 4, and both ends in the width direction of the sliding rubber bearing 5 are fixed to the bearing frame 2, and the sliding rubber A fiber-mixed rubber layer 7 and a metal plate 8 are fixed in a laminated state on the upper surface of an ethylene tetrafluoride plate 6 fixed to the lower surface of the intermediate portion of the support 5, and the metal plate 8 and the sliding rubber support 5 are fixed. Between the lower inner groove 9
And a lower outer groove 10 are provided.
An ethylene tetrafluoride plate 11 is fixed to the lower surface between the lower inner groove 9 and the lower outer groove 10, and an upper intermediate groove 12 is provided above the metal plate 8 above the sliding rubber support 5. At the same time, an upper outer groove 13 is provided between the upper intermediate groove 12 and the fixing portion of the sliding rubber support 5, and an upper outer metal plate 14 is embedded and fixed between the upper intermediate groove 12 and the upper outer groove 13. The stainless steel plate 4 and the tetrafluoroethylene plate 6
And the tetrafluoroethylene plate 11 enables the road telescopic connection device to be slid lightly for a long period of time while maintaining the sliding resistance of the road telescopic connection device small over a long period of time, and ,
The load of the wheel on the sliding rubber bearing 5 is
The load of the wheel supported by the intermediate horizontal plate 3 of each bearing frame 2 and riding on the upper outer metal plate 14 is applied to the tetrafluoroethylene plates 6 and 11 on both sides of the lower inner groove 9. , The load of the wheel can be strongly supported, and the fiber-containing rubber layer 7 is interposed between the tetrafluoroethylene plate 6 and the metal plate 8. The layer 7 allows the polytetrafluoroethylene plate 6 to be buffered and supported. Further, since the tetrafluoroethylene plate 6 and the tetrafluoroethylene plate 11 are provided on the slide portion of the sliding rubber support 5, the friction resistance when the sliding rubber support 5 slides on the stainless steel plate 4 is reduced. , And the expansion and contraction of the sliding rubber bearing 5 is smooth, so that the sliding rubber bearing 5 is prevented from rising upward, so that the running performance of the vehicle can be improved and the sliding can be further improved. Since the compression resistance force when compressing the rubber bearing member 5 is small, the axial pressure acting on the bridge girder can be reduced.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional side view showing a road expansion / contraction connection device according to an embodiment of the present invention.

FIG. 2 is a plan view showing a road expansion / contraction connection device according to an embodiment of the present invention.

FIG. 3 is a longitudinal sectional side view showing a part of FIG. 1 in an enlarged manner.

FIG. 4 is a longitudinal sectional side view showing a part of FIG. 3 in an enlarged manner.

FIG. 5 is a longitudinal perspective view showing a sliding rubber bearing used in the embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Road main body 2 Bearing frame 3 Intermediate horizontal plate 4 Stainless steel plate 5 Sliding rubber bearing member 6 Tetrafluoroethylene plate 7 Fiber mixing rubber layer 8 Metal plate 9 Lower inner groove 10 Lower outer groove 11 Tetrafluoroethylene plate 12 Upper intermediate groove Reference Signs List 13 upper outer groove 14 upper outer metal plate 15 rubber material 16 long hole 17 washer 18 opening 19 annular groove for cap locking 20 gap 21 L-shaped recess 22 anchor reinforcing bar 23 outer upper vertical plate 24 inner lower vertical plate 25 fixing reinforcing bar 26 Through-hole for bolt insertion 27 Female screw cylinder 28 Anchor bolt 29 Lateral reinforcing bar 30 Temporary hardening material 31 Bolt 32 Cap for covering

Claims (1)

(57) [Claims] 1. A metal bearing frame 2 is fixed to an upper portion of the opposing road body 1, and a stainless steel plate 4 is fixed to an upper surface of an intermediate horizontal plate 3 of each bearing frame 2. The sliding rubber bearing body 5 extending to
The sliding rubber support 5 is placed on each stainless steel plate 4 and
Both ends in the width direction are fixed to the support frame 2,
A fiber-mixed rubber layer 7 and a metal plate 8 are formed on the upper surface of the
Are fixed in a stacked state, and a lower inner groove 9 and a lower outer groove 10 are provided between the metal plate 8 and a fixing portion of the sliding rubber bearing 5.
A tetrafluoroethylene plate 11 is fixed to the lower surface between the lower inner groove 9 and the lower outer groove 10 of the sliding rubber bearing 5, and the metal plate is mounted on the upper portion of the sliding rubber bearing 5. 8, an upper intermediate groove 12 is provided, and an upper outer groove 13 is provided between the upper intermediate groove 12 and a fixing portion of the sliding rubber bearing 5, and the upper intermediate groove 12, the upper outer groove 13, A road expansion / contraction connection device in which an upper outer metal plate 14 is embedded and fixed therebetween.