JPH10252008A - Pavement plate connection structure - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To improve the durability of a connecting portion against a load fluctuation, a temperature change, and the like of a pavement plate. SOLUTION: The paving slabs 1, 2 on both sides which are connected to each other.
In addition, arcuate connection holes 2 and 2 are formed so as to open at the upper surface of each of the paving slabs 1 and 1 by connecting them at the joining end faces of the paving slabs 1 and 1, and arcuate connections are formed in the connection holes 2 and 2. The rod 10 is inserted across the two paving slabs 1, 1 and embedded and fixed by the filler 9. The connecting rod 10 includes an arc-shaped structural member 11 and a flexible massive cushion member 1 attached to both ends of the structural member 11.
3, 13 and a flexible tubular covering material 12 attached to the outer periphery of the structural material 11. Connecting rod 10
Vibration, displacement and the like of the structural material 11 are absorbed by the covering material 12 and the cushion materials 13, 13, thereby preventing the filler 9 from cracking.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting structure of a pavement slab when a precast concrete pavement or a cast-in-place concrete pavement is laid on a roadbed to form a pavement surface such as an apron or a runway of a road or an airport. About.

[0002]

2. Description of the Related Art Conventionally, pavements such as aprons and runways at roads and airports have excellent durability, and can be repaired or replaced for settlement, breakage, and the like. Editions are widely adopted. In order to cope with expansion and contraction due to temperature changes, these pavement plates form a pavement surface of a predetermined length and area by connecting a plurality of pavement plates in order to cope with expansion and contraction due to temperature change. It is supposed to.

[0003] Japanese Patent Application Laid-Open No. 56-167005 and Japanese Patent Application Laid-Open No.
No. 6, JP-A-56-167007, etc., in the connection structure disclosed in each of the paving slabs, a plurality of arc-shaped connection holes having both ends opened at the joining end surface and the upper surface at predetermined intervals, The connecting end faces of the paving slabs on both sides are brought into contact with each other to align and communicate the connecting holes, and a connecting rod such as an arc-shaped steel material is inserted into the connecting holes across the two, and further filled with mortar or the like. The material is filled and solidified, the connecting rods are buried and fixed, and the paving slabs on both sides are connected to each other.

[0004]

The above-described pavement plate connecting structure can efficiently perform operations such as insertion of a connecting rod into a connecting hole and filling of a filler from the upper surface of the pavement plate. Construction can be performed. However, with age after construction,
The filler exposed on the upper surface of the pavement plate breaks and peels off,
A defect that a concave portion is formed on the upper surface of the paving slab has been scattered.

As a mechanism of such damage, for example, as shown in FIG. 3, the connecting rods 7 in the connecting holes 2 and 2 are repeatedly caused by repeated vibrations and expansions and contractions due to load fluctuations on the pavement plates 1 and 1. The adhesion of the filler 9 is cut off, and the connecting rod 7 vibrates,
A crack or the like is generated in the filler 9 due to displacement or the like, and the crack 9 progresses.
As shown in (a) and (b), the end of the filler 9 protrudes from the connection holes 2 and 2 to the upper surface of the paving slabs 1 and 1, and this protruding portion is worn and broken by a traveling vehicle or the like. It is considered that the protrusion and breakage of the end portion of the filler 9 are repeated, and a concave portion is formed on the upper surface of the pavement plates 1 and 1 as shown in FIG.

Further, when such a mechanism further proceeds, not only the occurrence of a recess on the upper surface of the pavement plate, the filler in the connection hole is crushed, and the filler flows out due to rainwater inflow or the like. However, the connection function and the shearing force transmission function are also lost, and it is considered that the pavement plate itself is destroyed.

The present invention has been made in view of such a conventional problem,
It is an object of the present invention to provide a pavement plate connection structure in which the durability of a connection portion is further improved with respect to load fluctuation, temperature change, and the like of the pavement plate without impairing workability.

[0008]

SUMMARY OF THE INVENTION In order to solve the conventional problems as described above and to achieve the intended object, a feature of the present invention is to provide an arc-shaped connecting hole in both paving slabs connected to each other. Opened at the upper surface of each of the paving slabs communicating with the joint end surface of the paving slab, and formed in the connection hole, an arc-shaped connecting rod is inserted across the two paving slabs, and is filled with filler. In the connection structure of the paved slab buried and fixed, the connection rod,
An arc-shaped structural material, a flexible massive cushion material mounted on both ends of the structural material, and a flexible tubular covering material mounted on the outer periphery of the structural material. is there.

[0009]

FIG. 1 is a block diagram showing an embodiment of the present invention.
2 will be described.

In the drawing, reference numeral 1 denotes a precast concrete paving slab, and each paving slab 1 is formed with a plurality of arc-shaped connecting holes 2 having both ends opened at a joint end face and an upper surface at predetermined intervals. . The paving slabs 1 and 1 on both sides which are connected to each other are installed on the roadbed with their joining end faces in contact with each other, and the connecting holes 2 and 2 are aligned and communicated at the joining end faces. An arc-shaped connecting rod 1 is provided in the holes 2 and 2.
0 over the both, and further, a filler 9 such as mortar or the like.
By filling and solidifying, the connecting rods 10 are buried, fixed and connected to each other.

The connecting rod 10 is formed of an arcuate structural material 11.
And a flexible tubular covering material 12 attached to the outer periphery of the structural material 11 and flexible massive cushioning materials 13 attached to both ends of the structural material 11. .

The connecting rod 10 is made of, for example, an arc-shaped round steel (SR235) constituting the structural material 11 and a covering material 12.
Into a heat-shrinkable synthetic resin tube (Million Tube: trade name of Kyowa Co., Ltd.), and heat it evenly with a torch lamp or the like to bring the round steel and the heat-shrinkable synthetic resin tube into close contact with each other. By sealing and integrating the two ends with urethane foam constituting the cushion members 13, 13,
It can be suitably formed.

The structural material 11 of the connecting rod 10 is not limited to round steel as long as it has a certain strength, and the cushion members 13 are made of urethane foam if they have a certain flexibility. Not limited. The covering material 12 is not limited to the heat-shrinkable synthetic resin tube as long as the covering material 12 covers the structural material 11 and can hold the cushion members 13 at both ends, and does not necessarily have to be in close contact with the structural material 11. .

In the thus-structured pavement plate connecting structure, the connecting rod 10 is inserted into the connecting holes 2 and 2 from the upper surface side of the pavement plates 1, 1. Since work such as filling can be performed, construction can be performed efficiently. Further, the connecting rod 10 exerts flexibility by the covering material 12 and the cushioning materials 13 and 13 against load fluctuation, temperature change and the like of the pavement slabs 1, 1. 12, since it is absorbed by the cushioning materials 13 and 13 to prevent cracking of the filler material 9 and the like,
The durability is further improved.

In the above-described embodiment, a case has been described where the pavement slab to be connected is formed of precast concrete. However, the pavement slab to be connected may be formed of cast-in-place concrete.

[0016]

As described above, the connecting structure for paving slabs according to the present invention comprises a connecting rod buried and fixed in both connecting holes over both paving slabs connected to each other and an arc-shaped structural material. ,
By forming with a flexible massive cushion material attached to both ends of the structural material and a flexible tubular covering material attached to the outer periphery of the structural material, the load fluctuation of the pavement plate, The connecting rod exhibits flexibility against temperature changes and the like, and the durability of the connecting portion can be improved.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment of a pavement plate connecting structure according to the present invention.

FIG. 2 is an enlarged vertical sectional view of a connecting rod in FIG.

FIG. 3 is a vertical cross-sectional view showing the progress of destruction in a conventional pavement plate connection structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pavement plate 2 Connecting hole 9 Filler 10 Connecting rod 11 Structural material 12 Coating material 13 Cushion material

[Procedure amendment]

[Submission date] May 12, 1997

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Name of invention

[Correction method] Added

[Correction contents]

[Document Name] Statement

[Title of the Invention] Pavement plate connection structure

Claims (1)

[Claims] An arc-shaped connecting hole is formed in both paving slabs connected to each other at the joint end faces of the two paving slabs and is opened at the upper surface of each of the paving slabs. In a pavement plate connecting structure in which an arc-shaped connecting rod is inserted across the two pavement plates and buried and fixed by a filler, the connecting rod includes an arc-shaped structural material and both ends of the structural material. A pavement plate connecting structure, comprising: a lump-shaped cushion material having flexibility attached to a structural member; and a tubular covering material having flexibility attached to an outer periphery of the structural material.