JP2763455B2 - Paved version - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paving slab for forming a continuous road surface on a road bridge such as a bridge or viaduct.

[0002]

2. Description of the Related Art A bridge girder or a viaduct such as a viaduct expands and contracts between ends of the bridge girder so that the bridge girder expands and contracts due to a temperature change, and does not contact or collide with an adjacent structure when a vibration displacement occurs due to an earthquake. Joints are provided. The road surface located at the joint of the bridge girder needed an expansion device corresponding to the expansion joint.

[0003] There are various methods of the conventional telescopic device, but in each case, the joint between the girders is made of steel, reinforced concrete, rubber or the like. Therefore, steel, concrete, rubber, resin mortar, and the like are exposed on the road surface. The road surface on the road bridge is often made of asphalt concrete pavement, and the material is different from that of the telescopic device. For this reason,
There is a drawback in that a difference occurs in the degree of progress of frictional deformation depending on the traveling vehicle, and irregularities occur in the extension device along the traveling direction.

[0004] The irregularities cause noise and vibration and decrease the running comfort, and furthermore, due to the occurrence of impact, accelerate the fatigue damage of the expansion and contraction device, the fatigue of the bridge elevated, and cause the load of the traveling vehicle to be lost. I have. Also, repairing the damage to the expansion and contraction device is a work after traffic service, so the working time is limited, and repairing a device having a complicated structure has been a troublesome task.

The present invention has been made in view of the above problems. The purpose is to provide a pavement slab that can prevent the occurrence of unevenness due to running vehicles and the occurrence of various obstacles caused by this unevenness on the pavement surface on road bridges such as bridges and viaducts. There is to suggest.

[0006]

The pavement slab is a pavement slab which is arranged on a road bridge provided with expansion joints to form a road surface, and comprises: (a) a continuous displacement absorbing layer on a bridge girder; Continuous paving slab, and (c) three layers of surface layer are arranged in order,
The continuous pavement slab is reinforced by embedding a continuous mesh material, and a cut blind land is provided on the through surface layer at a position directly above an expansion joint of a bridge girder.

[0007]

FIG. 1 shows an embodiment in which a pavement slab 2 is arranged on a bridge 1 to form a pavement road surface.
The bridge 1 is constructed with a bridge girder 5 interposed therebetween. One end of the bridge girder 5 is fixedly mounted on the bearing 6-1 and the other end is movably mounted on the bearing 6-2, between the side surface of the abutment 3 and the end surface of the bridge girder 5, and between the bridge girder 5, An expansion joint 7 for absorbing expansion and contraction displacement between the girders is provided between the five end faces. The joint between the abutment 3 and the top surface of the bridge girder 5 and between the top surfaces of the bridge girder 5,5 is joined.
A cover plate 8 for covering the upper surface is provided with one end fixed by a fastening pin 9.

On the bridge girder 5 of the bridge 1, a pavement slab 2 having a thickness h in which a continuous displacement absorbing layer 10, a continuous pavement slab 11, and a continuous surface layer 12 are sequentially stacked is arranged to form a pavement road surface. The displacement absorbing layer 10 has adhesiveness and plastic deformability, adheres to both the bridge girder and the paving slab thereon, and absorbs the horizontal displacement of the bridge girder to reduce or interrupt the stress transmitted to the paving slab. This is a continuum composed of layers of bituminous material, rubbery material, resin material and the like.

The continuous paving slab 11 supports the through surface layer 12. In this embodiment, the continuous paving slab 11 is a continuum mainly composed of asphalt or concrete, in which one or a plurality of mesh members 13 are buried and reinforced. The mesh material 13 is a reinforcing material against the stress caused by the expansion and contraction of the lower girder and the load on the running vehicle. In this embodiment, the hemp-shaped wire mesh shown in FIG. 2 is used as a continuous body. As the mesh material 13, in addition to the normal wire mesh wire of the above embodiment, a special elastic wire wire mesh having a small thickness, a crimp wire mesh shown in FIG. 3, or a tensile elastic modulus of a plain woven wire mesh, a carbon fiber mesh, a resin fiber mesh, or the like is used. Higher ones can be used. The through surface layer 12 is a continuous layer made of asphalt concrete, and is finished flat so as not to cause irregularities due to the tires of the running vehicle. A cut blind spot 14 is provided on the through surface layer 12 at a position directly above the elastic joint 7.

[0010]

The pavement slab is constructed as described above, and the expansion and contraction stress between the bridge girders is cut off or reduced by the displacement absorbing layer provided on the bridge girder and transmitted to the continuous paving slab. The continuous pavement slab is reinforced with a mesh material, and exhibits reinforcement that withstands joint expansion stress and vehicle load. Therefore, the continuous pavement slab and the through surface layer are integrated to form and maintain a continuous pavement road surface, and it is possible to prevent the occurrence of irregularities due to vehicle running.

Therefore, the pavement plate ensures comfortable running of the vehicle, prevents noise and vibration, and contributes to improving the road environment. In addition, even if the pavement surface is damaged, repair can be performed by continuously changing the surface layer, and there is no need for complicated work like conventional repair work, and quick repair can be performed.

[Brief description of the drawings]

FIG. 1 is a sectional view of a pavement slab according to an embodiment.

FIGS. 2 (a) and 2 (b) are a plan view and a side view of a barbed wire mesh material.

3A and 3B are a plan view and a side view of a crimped wire mesh.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Bridge, 2 ... Paved version, 3 ... Abutment, 4 ... Pier, 5 ... Bridge girder, 6 ... Bearing, 7 ... Expansion joint, 8 ... Cover plate, 9
... fastening pins, 10 ... displacement absorption layer, 11 ... continuous pavement plate, 1
2 ... through surface layer, 13 ... mesh material, 14 ... cut blind ground.

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-1-169004 (JP, A) JP-A-62-21909 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) E01C 11/02 E01D 19/06

Claims (1)

(57) [Claims] 1. A pavement slab which is arranged on a bridge girder having joints for absorbing expansion and contraction displacement between the bridge girder and forms a road surface, wherein (a) a continuous displacement absorbing layer on the bridge girder, (b) continuous pavement Edition, and
(c) The continuous pavement slab is laid in three layers in order, and a continuous mesh material is buried and reinforced in the continuous paving slab, and the continuous surface slab is cut at a position immediately above the expansion joint of the bridge girder. A paved version characterized by having a blind spot.