JPH1113005A - Structure of joint part of bridge, and paving method of the joint - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a joint part for a bridge in which the noise and vibration are little generated through a continuous pavement surface, no local deformation caused by the expansion/shrinkage is present, cracks or separation of the pavement body are less generated during a long service, rutting is suppressed to a minimum, and generation of the shocks when a vehicle passes can be prevented. SOLUTION: A plate structure 9 which is of the height H approximately same as the depth of a recessed part 13, and is formed in a lattice by plate members 8 of the width same as the pavement width, is arranged in the recessed part 13 formed between pavement bodies 3a, 3b. The pavement material 10 such as asphalt is filled in divided space parts 9a of the plate structure 9 arranged in the recessed part 13 between the pavement bodies 3a, 3b, and in a space part between the plate structure 9 and the recessed part 13 so that the pavement material is approximately flush with the upper surface 3X of the pavement bodies 3a, 3b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a seam for a bridge and a method of paving a seam for a bridge, and more particularly to a method for preventing cracks, peeling and digging of a seam and improving the efficiency of construction work. The present invention also relates to a structure of a joint for a bridge capable of shortening a construction process and a method of paving a joint for a bridge.

[0002]

2. Description of the Related Art Conventionally, as a structure of a road joint portion for a bridge such as a road bridge or a viaduct, a joint portion between pavements made of asphalt, crushed stone, filler, and the like is connected by interposing a finger joint made of a metal material. The joints between the pavements and the joints between the pavements were connected with a rubber joint interposed, and the joints of the asphalt pavement constructed on the slab concrete were cut out, and the notched cross-section concave portions There is known a pavement surface integrated type buried joint (for example, JP-A-64-29508) in which a net-like material, a sheet-like material, and a honeycomb structure are provided, and asphalt, crushed stone, filler, and the like are filled thereon. I have.

[0003]

However, the one using a finger joint at the road joint has a problem that noise and vibration are generated, which deteriorates the environment of neighboring residents. There was a problem of giving unnecessary fatigue. In addition, since the finger joint is discontinuous with the pavement surface, there is a problem that the pavement surface is damaged such as cracks and peeling, and furthermore, there is a problem that it takes a long time to perform the work because of the mechanical fixation. .

[0004] In the case where a rubber joint is used for the joint, noise and vibration are not generated as much as the finger joint, but it gives an uncomfortable feeling to the occupant of a passing vehicle, and the rubber may be damaged on heavy traffic. Further, there is a problem that it takes a long time to perform the construction because of mechanical fixing. Furthermore,
In the case of a buried joint with an integrated pavement surface, rutted roads are large, and it is difficult to use it on slopes and in directions other than perpendicular to the direction of vehicle travel. In this case, there was a problem that cracks and peeling of the pavement occurred.

It is an object of the present invention to reduce the occurrence of noise and vibration, to prevent local deformation due to expansion and contraction, to reduce the occurrence of cracks and peeling of a pavement even during long-term use, and to minimize rut digging. It is an object of the present invention to provide a structure of a bridge joint and a pavement method of the bridge joint which can prevent the generation of an impact when passing through a vehicle and can improve the efficiency of the construction work and shorten the construction process.

In order to achieve the above object, according to the present invention, the structure of a joint portion for a bridge includes a gap on a floor slab and forms a recess extending over both pavements, and a longitudinal direction of the gap is formed in the recess. And a plate-like structure formed in a grid pattern by a plate-like member having a height substantially equal to the height of the recess, and being partitioned by the plate-like member in the plate-like structure. The pavement material made of an elastic material is filled into the space so as to be substantially flush with the upper surface of the pavement.

In the method of paving a joint for a bridge according to the present invention, a recess is formed over both pavements, including a gap between the pavements for a bridge, and the depth of the recess is substantially equal to the depth of the recess. A plate-like structure formed in a lattice shape by plate-like members having the same height is disposed so that the plate-like member obliquely intersects the longitudinal direction of the play, and the plate-like member of the plate-like structure is provided. The gist of the present invention is to fill a pavement material so as to be substantially flush with the upper surface of the pavement body in the space section defined by.

[0008] As described above, the plate-like structure formed in a lattice shape by the plate-like member having substantially the same height as the depth of the concave portion is formed in the concave portion formed between the pavements on the floor slab. The member is disposed so as to obliquely intersect with the longitudinal direction of the play, and paved in a space defined by the plate-shaped member of the plate-shaped structure so as to be substantially flush with the upper surface of the pavement. Since the material is filled, there is no local deformation due to expansion and contraction of the pavement, and rut digging can be minimized to prevent the generation of an impact when passing through the vehicle. In addition, even when the pavement is used for a long time, cracks and peeling of the pavement are less likely to occur, so that the efficiency of the construction work and the construction process can be shortened.

Further, since all the plate members are arranged obliquely in the direction of expansion and contraction of the joint, the plate members can more easily follow the deformation as compared with the honeycomb structure.

[0010]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a cross-sectional view of a joint portion for a bridge according to the present invention. The concrete floor slabs 2a and 2b installed with a play space 1 having a predetermined width h are separated by a predetermined size on the play space 1. Pavement 3a, 3b made of asphalt, crushed stone, filler, etc., having recess 13
Is installed at a predetermined thickness.

The gap 1 between the floor slabs 2a and 2b is filled with a back-up material 4 and a binder 5 so that rainwater or the like does not leak from the roadbed, and the upper surfaces of the floor slabs 2a and 2b are sandwiched between the gaps 1 and 2b. The center plate 6 covers the upper surface of the play space 1.
And fixed by fixing pins 7. Paving body 3
1 and 2 in the concave portion 13 formed between
As shown in the figure, a plate-like structure 9 formed in a lattice shape by a plate-like member 8 having a height H substantially equal to the depth of the concave portion 13 and having the same width as the pavement width (not shown) is provided. . The angle α at which the plate-like structures 9 intersect is not particularly limited, but may be 60 °.
~ 120 ° is preferred.

In the plate-like structure 9, the longitudinal direction of the plate-like member 8 is arranged at a predetermined angle, for example, about 40 ° to 60 °, preferably about 45 ° with the width direction of the pavement road or the road bridge. The floor slabs 2a and 2b are configured to be able to follow expansion and contraction and rotational deformation. The height H of the plate-like structure 9 is
Depending on the thickness of the pavement 3a, 3b of the road or road bridge,
Usually, it is composed of a thickness of 50 mm to 75 mm, or a thickness around these.

The plate-like member 8 constituting the plate-like structure 9 has only to have the purpose of transmitting stress.
In addition to metals such as aluminum and stainless steel, a plate-like body reinforced with resin or fiber may be used. As a fiber reinforcement,
It may be a plate impregnated with resin-impregnated fibers or reinforcing fibers. Examples of the fibers include metal fibers, polyamide fibers, polyester fibers, aromatic polyamide fibers, cellulosic fibers, and carbon fibers. .

Examples of the resin include a thermoplastic resin and a thermosetting resin. The thermoplastic resin is not particularly limited, but includes a polyolefin resin, a polyamide resin,
Thermosetting resin such as polyester resin and its composition,
Thermoplastic elastomers such as polyolefin-based thermoplastic elastomers, polyamide-based thermoplastic elastomers, polyester-based thermoplastic elastomers, polyurethane-based thermoplastic elastomers, and their compositions, and vulcanized rubber compositions in these thermoplastic resins and thermoplastic elastomers Thermoplastic polymer composition (polymer alloy) in which a rubber composition containing a product is dispersed in the form of particles.

As the thermosetting resin, urea resin,
Phenol resin, melamine resin, epoxy resin and the like are exemplified. Further, the plate-like structure 9 is configured by combining or bonding a plurality of plate-like members 8, or by bonding after combining the plate-like members 8. Further, as another configuration of the plate-like structure 9, it is also possible to stretch and deform an integrally formed one by extrusion and casting to form a lattice shape or a rhombus shape.

In the space 9a defined by the plate-like structure 9 disposed in the recess 13 between the pavements 3a and 3b and in the space between the plate-like structure 9 and the recess 13, the pavement 3a is provided. , 3b
Is filled with a pavement material 10 such as asphalt so as to be substantially flush with the upper surface 3X of the base material. Before filling the pavement material 10, a partition member 11 such as vulcanized rubber or plastic, which is slightly wider than the center plate 6, may be laid on the center plate 6.

As the pavement material 10, in addition to asphalt usually used as described above, goose asphalt, rubber-containing asphalt, modified asphalt, organic polymer binder, and the like, which are resilient, are preferably used. In the case of using a mixture with an aggregate such as the above, the rut resistance can be further improved. The crushed stone is slightly smaller than the opening of the space 9a between the lattices of the plate-like structure 9, and the crushed stone is desirably of a single grain size.
Further, it is preferable that the ratio of asphalt and aggregate in the space 9a between the lattices is such that the asphalt occupies 40% to 60% in volume ratio.

Next, a first embodiment of a method of paving a bridge joint portion will be described with reference to FIGS. In a concave portion 13 formed by cutting off a part of a joint portion of the bridge pavement 3a, 3b, a lattice-like shape is formed by a plate-like member 8 having substantially the same height H as the concave portion 13 and having the same width as the pavement width. Alternatively, the plate-like structure 9 formed in a rhombus is formed at a predetermined angle (40 ° to 60 °).
It is arranged in.

The asphalt or the asphalt or the like is formed in the space 9a defined by the plate-like structure 9 and the space between the plate-like structure 9 and the recess 13 so as to be substantially flush with the upper surfaces of the pavements 3a and 3b. A pavement material 10 consisting of a mixture of asphalt and aggregate such as crushed stone is filled. The pavement material 10 absorbs a change in the amount of play due to expansion and contraction, rotational deformation and the like of the concrete floor slabs 2a and 2b by the pavements 3a and 3b made of asphalt, crushed stones, fillers, and the like. The floor slabs 2a, 2 are directly provided by the plate-like structure 9 having a height.
b.

In particular, in the case of the pavement material 10 comprising a mixture of asphalt and aggregate used in the present invention, the resistance to rut digging can be further improved. As described above, in the space 9a of the plate-like structure 9, the pavement material 10 made of the asphalt used in the present invention and the material such as crushed stone added as needed is substantially flush with the upper surfaces of the pavements 3a and 3b. As a result, it is possible to prevent the occurrence of an impact when passing through the vehicle.
The asphalt used in the present invention has the same or similar properties as the asphalt usually used for the pavement of a bridge, so that the continuity of the pavement surface is maintained, and the pavement is less likely to crack or peel even after long-term use.

The bridge slabs 2a and 2b and the pavement 3
Since a special connection device is not used between a and 3b, the efficiency of the construction work and the shortening of the construction process can be achieved. Fig. 3 shows the second pavement method of the seam for the bridge.
In the present embodiment, a plate-like structure 9 is formed in advance in a place other than the embedding place, and the plate-like structure 9 is transported to the position of the recess 13 in the embedding place. It is a construction method of burying.

The plate-like structure 9 in this embodiment is formed to have the same size as the recess 13 or slightly smaller.
3, a backing material 4 and a binder 5 are filled in the play space 1 between the floor slabs 2a and 2b so that rainwater or the like does not leak from the roadbed, and the upper surface of the play space 1 It is also possible to install the center plate 6 so as to cover it and fix it with the fixing pins 7, and further lay a partition member 11 on the center plate 6.

Further, the plate-like structure 9 and the pavement material 10 are fixed to the boundary surface between the recess 13 and the pavement surface, the upper surfaces of the floor slabs 2a and 2b, and the entire upper surface of the play space 1 or a part thereof to prevent rainwater from penetrating. An adhesive layer 14 for prevention is used. The adhesive layer 14 is not particularly limited as long as it achieves the above-mentioned purpose, and has the same composition as the material used for the pavement material 10 or a material obtained by melting asphalt having similar properties. Alternatively, the same binder as that used in the play area is preferably used.

Example 1 Next, in order to confirm the stretchability of a structure composed of the plate-like structure 9 and the pavement material 10 according to the present invention, a test piece W as shown in FIGS.
And a pair of fixing jigs 12a and 12
b), and the expansion and contraction behavior was observed using a known expansion tester.

The specimen W is made of a thermoplastic elastomer (polymer alloy) in which a rubber composition containing a vulcanized rubber composition in a polypropylene resin is dispersed in a particle shape in a plate-like structure 9, and is cut into a comb shape. The asphalt-containing asphalt was used as the paving material 10. As a test method, expansion and contraction are performed by first stretching one end at a speed of 3 mm / hour from a play distance of 50 mm, inverting when the play distance becomes 75 mm, and then compressing at a speed of 3 mm / hour. When the play distance has become 25 mm, it is reversed again, extended at a speed of 3 mm per hour, and returned to the original play distance of 50 mm. A test was performed in which this operation was repeated as one cycle.

The specimen W of the above embodiment did not deform even after 5 cycles. The displacement due to the extension and compression was absorbed by the entire specimen W, and the displacement did not concentrate locally. In addition, no dent due to the entire elongation of the specimen W and no swelling due to the compression occurred, and the specimen W was absorbed by a change in the height of the asphalt in the lattice space 9a of the plate-like structure 9.

Example 2 A specimen W was manufactured using the same structure as in Example 1 but using a single-grained crushed stone having an average diameter of 13 mm on the asphalt portion, and using the same stretching test machine as in Example 1. A test of the stretching behavior was performed under the same conditions. Paving material 10
The crushed stone and asphalt are mixed at a ratio of 55:45, and the specimen W is a plate-like structure 9 in which a thermoplastic resin and a rubber composition containing a vulcanized rubber composition in a thermoplastic elastomer are particles. , A thermoplastic elastomer (polymer alloy) dispersed in a mixture, and a comb-like cut was combined and bonded to each other, and as a pavement material 10, rubber-containing asphalt was used. Specimen W of the above embodiment
Did not deform even after 5 cycles.

Comparative Example 1 The same size as in Example 1 was used.
A sample Wa made of a mixture of asphalt and crushed stone having no plate-like structure 9 was manufactured, and a test of expansion behavior was performed using the same expansion test machine as in Example 1 under the same conditions. As the crushed stone, a crushed stone having a single particle size with an average diameter of 14 mm was used. As the pavement material 10, asphalt with rubber was used.

In the specimen Wa according to Comparative Example 1, distortion occurs near the end of the center plate 6 during the first period of elongation, cracks occur during the second period of elongation, and the surface layer is removed during the third period. Torn. In the specimen Wa according to Comparative Example 1, the change in height during extension was remarkable, but the vicinity of the center swelled in the width direction during compression. As described above, by using the grid-like plate-like structure 9 and the pavement material 10 made of asphalt or a mixture of asphalt and an aggregate such as crushed stone to form a joint structure, a short-term structure can be obtained. No distortion or cracking was found to occur.

[0030]

According to the present invention, there is provided a plate-like member formed in a lattice shape by a plate-like member having substantially the same height as the depth of the concave portion in the concave portion formed between the pavements on the floor slab as described above. The structure is disposed so that the plate-like member obliquely intersects with the longitudinal direction of the play, and the upper surface of the pavement and a substantially surface thereof are provided in a space defined by the plate-like member of the plate-like structure. Since the pavement material is filled so as to be one, there is no local deformation due to expansion and contraction of the pavement, and rut digging can be minimized to prevent the generation of an impact when passing through the vehicle. In addition, even when the pavement is used for a long time, cracks and peeling of the pavement are less likely to occur, so that the efficiency of the construction work and the construction process can be shortened.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a bridge joint portion embodying the present invention.

FIG. 2 is a perspective view of a plate-like structure according to the present invention.

FIG. 3 is an explanatory view showing a second embodiment of a pavement method of a joint portion for a bridge.

FIG. 4 is a front view of a test piece used for an experiment with a stretching tester.

FIG. 5 is a plan view of a test piece used for an experiment with a telescopic tester.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Play space 2a, 2b Floor slab 3a, 3b Pavement 4 Backup material 5 Binder 6 Center plate 7 Fixing pin 8 Plate member 9 Plate structure 10 Pavement material 11 Partition member 13 Depression 12a, 12b Fixing jig 14 Adhesive layer h Width of play 9a Space 3X Upper surface of pavement

Claims (7)

[Claims] 1. A recess including a play on a floor slab and straddling both pavement bodies. The recess intersects obliquely in a longitudinal direction of the play and has a height substantially the same as the height of the recess. A plate-like structure formed in a lattice shape by a plate-like member having a thickness is disposed, and a pavement material made of an elastic material is filled in the space portion partitioned by the plate-like member in the plate-like structure. The structure of the seam for the bridge, which is filled almost flush with the upper surface of the bridge. 2. The structure according to claim 1, wherein the plate-like member is made of a metal plate or a synthetic resin plate. 3. The structure according to claim 1, wherein the paving material is asphalt alone or a mixture of asphalt and aggregate such as crushed stone. 4. A recess including a gap between bridge pavements and straddling both pavements, and a lattice-like or a plate-like member having a height substantially equal to the depth of the recess is formed in the recess. A plate-shaped structure formed in a rhombic shape is disposed so that the plate-shaped member obliquely intersects with the longitudinal direction of the play, and a space defined by the plate-shaped member of the plate-shaped structure, A pavement method for bridge joints where the pavement material is filled so that it is substantially flush with the top surface of the pavement. 5. The method for paving a bridge joint according to claim 4, wherein the plate-like structure is pre-assembled and buried from the plate-like member at a place other than a buried place. 6. The pavement method according to claim 4, wherein the plate-like structure is formed integrally by extrusion or casting and formed into a lattice shape and used. 7. The plate-like structure is obtained by assembling a comb-shaped plate, assembling the plate-like structure, further bonding the assembled member, or bonding a plate-shaped member. 7. The pavement method for a joint portion for a bridge according to claim 4, which is used by forming it in a lattice shape.