JPH0649806A - Pavement block - Google Patents

Abstract

PURPOSE:To prevent generation of unevenness of a road surface caused by traveling vehicles by piling successively, a girder, a displacement absorption layer, a conbinuous pavement block, which is reinforced by means of burying mesh material in the ground, and a consecutive surface layer. CONSTITUTION:A bridge beam 1 is formed by means of building a bridge girder 5 between an abutment 3 and a bridge pier 4 and also between bridge piers 4. An expansion joint 7, which absorbs expansion displacement between the abutmen 3 and the pier 5 and also between the girders 5, is provided and a cover plate 8 covering the top surface of the joint 7 is secured by a check pin 9. A pavement block is provided by means of successively piling on the bridge girder 5 a displacement absorption layer 10 of a bituminous material or the like, a continuous pavement block 11, formed by burying a mesh material 13 in asphalt or concrete, and a continuous surface layer 12 of asphalt concrete.

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 an overpass.

[0002]

2. Description of the Related Art In a road bridge such as a bridge or an overpass, when a girder expands or contracts due to temperature change or a vibration displacement occurs due to an earthquake,
Expansion joints are provided between the ends of the girders so that they do not come into contact with or collide with adjacent structures. An expansion device corresponding to expansion joints was required on the road surface portion of the girder located above the joint.

There are various methods for the conventional expansion / contraction device, but in each case, the joint portion between the girders is made of steel, reinforced concrete, rubber or the like. For this reason, steel on the road surface,
Exposed concrete, rubber, resin mortar, etc. The road surface on the road bridge is often asphalt concrete pavement, and the material is different from that of the expansion / contraction device. Therefore, there is a difference in the degree of progress of frictional deformation due to the traveling vehicle,
There was a defect that unevenness was generated along the running direction at the expansion and contraction device part.

The uneven portion causes noise, vibration and deterioration of traveling comfort, and further, the occurrence of impact promotes fatigue damage of the expansion and contraction device and fatigue of the bridge overpass, which may cause the load of the traveling vehicle to collapse. There is. Further, repairing a breakage of the expansion / contraction device requires work after the vehicle is in service, which limits the working time, and repairing a device having a complicated structure has been a difficult task.

The present invention has been made in view of the above problems. The purpose is to create a paving slab that can prevent the occurrence of unevenness due to the traveling vehicle and various obstacles due to this unevenness because the pavement surface on the road bridge such as bridges and overpasses is composed of a single continuous layer I have a suggestion.

[0006]

[Means for Solving the Problems] This pavement plate is a pavement plate that is arranged on a road bridge having stretch joints to form a road surface, and a displacement absorbing layer, a continuous pavement plate and a continuous surface layer are arranged on a girder in order. The continuous paving slabs are arranged in layers, and continuous mesh materials are embedded and reinforced.

[0007]

EXAMPLE FIG. 1 is an example in which a paving slab 2 is arranged on a bridge 1 to form a paved road surface, and between abutment 3 and pier 4 and pier 4
A bridge 1 is constructed by erection of a bridge girder 5 between them. 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, and is located between the side face of the abutment 3 and the end face of the bridge girder 5 and the bridge girder 5. Elastic joints 7 are provided between the five end faces to absorb the elastic displacement between the girders. A joint 7 straddles between the abutment 3 and the upper surface of the bridge girder 5 and between the upper surfaces of the bridge girders 5, 5.
A cover plate 8 covering the upper surface is arranged with one end fixed by a retaining pin 9.

On the bridge girder 5 of this bridge 1, the displacement absorbing layer 1
The paved road surface is configured by arranging a paving plate 2 having a thickness h, which is formed by sequentially stacking 0, the continuous paving plate 11 and the through surface layer 12.

The displacement absorbing layer 10 has adhesiveness and plastic deformability, adheres and fixes the bridge girder and the pavement on it, and reduces the stress transmitted to the pavement by absorbing the horizontal displacement of the bridge girder. It is intended to cut off, and is composed of layers of bituminous material, rubber material, resin material and the like.

The continuous paving slab 11 supports the through surface layer 12, and is a continuous body mainly made of asphalt or concrete in this embodiment, and one or a plurality of mesh materials 13 are buried and reinforced. The mesh member 13 is a reinforcing member against the stress caused by the expansion and contraction of the lower girder and the traveling vehicle load. In this embodiment, the mesh mesh shown in FIG. 2 was used as a seamless continuous body. As the mesh material 13, in addition to the usual barb-shaped wire mesh of the above-described embodiment, a thin special-shaped wire mesh, a crimp wire mesh shown in FIG. 3, a plain weave wire mesh, a carbon fiber mesh, a resin fiber mesh, or the like has a tensile elastic modulus. 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 unevenness due to the tires of the traveling vehicle. A cut blind joint 14 is provided on the through surface layer 12 immediately above the expansion joint 7.

[0011]

This pavement slab has the above-mentioned structure, and the displacement absorbing layer provided on the bridge girder blocks or reduces the expansion / contraction stress between the bridge girders and transmits it to the continuous pavement slab. The continuous paving slab is reinforced with a mesh material, and exerts reinforcement to withstand expansion and contraction stress of joints and vehicle load.

Therefore, the continuous floor slab and the through surface layer are integrated,
It is possible to maintain the formation of a continuous paved road surface and prevent the formation of irregularities due to vehicle running.

Therefore, this paving slab allows the vehicle to travel comfortably,
It prevents noise and vibration, improves the road environment, and prevents damage to the expansion and contraction device. In addition, even if it is damaged, it can be repaired by continuously changing the through surface layer, and there is no need for complicated work as in conventional repair work, and quick repair is possible.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a paving slab of an example.

FIG. 2A is a plan view and FIG. 2B is a side view of a paddle-shaped wire mesh material.

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

[Explanation of symbols]

1 ... Bridge, 2 ... Pavement version, 3 ... Abutment, 4 ... Bridge pier, 5 ... Bridge girder, 6 ... Support, 7 ... Expansion joint, 8 ... Cover plate, 9
... retaining pins, 10 ... displacement absorbing layer, 11 ... continuous paving slab, 1
2 ... Through surface layer, 13 ... Mesh material, 14 ... Cut blind spot.

Claims (1)

[Claims] 1. A pavement slab comprising a road bridge provided with joints for absorbing expansion and contraction displacement between girders to form a road surface, wherein a displacement absorbing layer, a continuous pavement slab, and a continuous surface layer are sequentially stacked on the girder. The continuous pavement plate is characterized in that a continuous mesh material is embedded and reinforced.