JP3896474B2 - Vibration reducing pavement structure and pavement method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention reduces vibration transmitted through the road when the vehicle travels, thereby improving the living environment around the road, reducing vibration obstacles in the precision processing industry, and activating the use of industrially important automobile roads. Reducing pavement structure and pavement method.
[0002]
[Prior art]
Although measures such as improving the road bed are effective for reducing vibrations transmitted through the road when the vehicle is running, there is a problem that the construction period is long and the vehicle cannot pass for a long time.
[0003]
[Problems to be solved by the invention]
On the main roads in urban areas, along with the increase in traffic volume, vibrations transmitted through the roads deteriorate the living environment of residents along the road. This invention makes it a subject to reduce the vibration transmitted through a road at the time of a vehicle travel, and to improve the living environment of a along-line inhabitant.
[0004]
[Means for Solving the Problems]
In order to achieve the above object, the present invention has the following configuration. That is, the invention according to claim 1 is a road pavement structure comprising a bottom plate member, a special elastic member of an intermediate layer, and an upper concrete slab that is directly subjected to wheel load, and vibration reducing pavement that is absorbed by elastic deformation of the elastic member. The elastic member is provided with an elastic stopper having a height lower than that of the elastic support portion, and when an impact force of a predetermined value or more is applied to the upper concrete slab, the lower surface of the upper concrete slab acts as the elastic stopper. The vibration reducing pavement structure is configured to absorb the impact force while restricting elastic deformation of the elastic support portion by elastic deformation by collision.
A second aspect of the present invention relates to the elastic member according to the first aspect, wherein a plurality of protrusions are provided on the elastic support portion of the elastic member, and the protrusions are embedded in the lower surface of the upper concrete slab. And
A third aspect of the invention relates to the structure of the first or second aspect, wherein an adhesive plate such as a steel plate is fixed to the lower surface of the elastic member, and the female screw is fixed to the adhesive plate.
According to the invention of claim 4, the upper concrete slab for road is placed and supported via the elastic member used in claim 1, and the vibration reducing elastic member elastically deforms the vibration acting on the upper concrete slab. A vibration-reducing pavement method for absorbing vibration, wherein the vibration-reducing elastic member is provided with pipe-shaped level adjusting means capable of adjusting the upper and lower levels of the upper concrete slab by screwing operation, and the pipe of the level adjusting means In the vibration reducing pavement method , the level adjusting means is provided in the vibration reducing elastic member, wherein mortar or the like is injected and filled into a space existing on the bottom surface of the vibration reducing elastic member through a hole. The upper concrete slab by adjusting the screwing amount of the male screw. Dynamic relief paving method vibration you characterized in that it is formed by the level adjusting male screw member for adjusting the vertical level.
The invention according to claim 5 relates to the structure according to claim 4, wherein the vibration reducing elastic member is provided with an elastic stopper having a height lower than that of the elastic support portion for supporting the upper concrete slab, and is equal to or greater than a predetermined value. When an impact force acts on the upper concrete slab, the lower surface of the upper concrete slab collides with the elastic stopper and elastically deforms, thereby limiting the elastic deformation of the elastic support portion and absorbing the impact force. According to a sixth aspect of the present invention, there is provided an elastic seal according to the construction method of the fifth aspect, wherein the elastic member is elastically deformed by elastic contact with the bottom plate member on the outer peripheral portion of the bottom surface of the elastic member for vibration reduction. A material portion is provided, and mortar or the like supplied to the space portion is configured to be prevented from flowing out by the elastic sealing material.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail based on the embodiment shown in FIGS.
FIG. 1 is an external perspective view of an upper concrete slab according to the vibration reducing pavement structure of the present embodiment, FIG. 2 is an external perspective view of a bottom slab member, FIG. 3 is an external perspective view of a pipe-shaped male screw for vertical level adjustment, and FIG. Is a schematic external side view in a state where the vibration reducing pavement is assembled, FIG. 5 is a plan view of the elastic member, FIG. 6 is a cross-sectional view taken along line V-V in FIG. FIG. 8 is an enlarged longitudinal sectional view for explaining a state in which the upper concrete slab is adjusted in the vertical level.
[0006]
The schematic configuration of the vibration reducing pavement structure according to the present embodiment includes an upper concrete slab A in which slab through holes Aa are formed at four corners as shown in FIG. 1, and a roadbed F as shown in FIG. A plurality of vibration-reducing elastic members (also simply referred to as “elastic members”) C are arranged in an intermediate layer with the base plate member B placed on the reference plate). The upper concrete slab A may be, for example, a concrete slab in which asphalt is paved on the surface of the upper concrete slab, and when the upper concrete slab A receives a force that is vibrated by a vehicle traveling thereon, The resulting vibration is absorbed and reduced by the elastic member C of the intermediate layer, the vibration transmitted to the bottom plate member B is reduced, and the vibration of the roadbed F below and the vibration transmitted to the outer part of the roadbed (private land, etc.) are reduced. To do. The upper concrete slab A is connected by various methods so as to have a necessary length and a necessary area as appropriate, and is configured to move integrally as a connecting plate.
[0007]
Next, referring to FIG. 6, the vibration reducing elastic member C disposed in the intermediate layer will be described. The elastic member C for vibration reduction is preferably formed in a structure having an overall symmetry with respect to its center line, such as a cylinder or a polygonal cylinder, and the load of the upper concrete slab A to be supported and The pressure receiving area, height, and spring constant are appropriately set according to the frequency, and the structure ensures durability and vibration proofing in normal use.
[0008]
The elastic member C for vibration reduction includes an annular elastic support portion Cg that elastically supports the load of the upper concrete slab A at normal times, a mounting diver Ca provided on the top surface of the elastic support portion Cg, and abnormal load generation. In order to limit the displacement elastically sometimes, an elastic support Cg and an elastic stopper Cb formed substantially concentrically are provided. This elastic stopper Cb is formed lower than the elastic support portion Cg, and has a stopper function for supporting the lower surface of the upper concrete slab A that receives an excessive impact force and rapidly changes downward. This stopper function reduces the displacement of the elastic part Cg that is always supported and improves the durability by suppressing excessive deformation of the upper concrete slab A and vibration reducing elastic member C without impairing the vibration proofing property under normal load. Let
[0009]
On the other hand, for the mounting diver Ca provided on the upper surface of the vibration reducing elastic member C, a material such as hard rubber, plastic or metal is appropriately used, and the lower part thereof is firmly bonded to the vibration reducing elastic member C by vulcanization adhesion or the like. The upper part is used by being embedded in the concrete, and a well-known uneven shape is appropriately formed in order to make it difficult to come out from the concrete.
[0010]
On the other hand, the elastic member bottom surface adhesive plate Cc is fixed to the bottom surface of the vibration reducing elastic member C by vulcanization adhesion. A female thread Cd is attached to and integrated with a substantially central portion of the adhesive plate Cc by fixing means such as welding, and a level adjusting pipe D having a male thread Da at the bottom is screwed into the female thread Cd. It is formed so that the vertical position of the upper concrete slab A can be adjusted. That is, the elastic member bottom surface adhesive plate Cc has a function of distributing stress to the elastic member when the upper concrete slab A is leveled using the integrated level adjusting female screw Cd.
[0011]
Further, as shown in FIG. 3, the level adjusting pipe D has a space portion formed between the bottom surface of the elastic member C and the base plate member B using the inner diameter portion and Db, that is, mortar or the like in the mortar injection portion I. It functions as an injection hole that fills.
[0012]
Further, as shown in FIG. 8, an elastic seal material Ce that can be elastically deformed is provided on the outer peripheral portion of the bottom surface of the elastic member C. It functions as a prevention mold that prevents the mortar and the like from flowing out from the bottom surface of the elastic member during the filling operation of the mortar and the like injected into the space I.
[0013]
Next, referring to FIG. 7, a pavement method for integrating the vibration reducing elastic member C with the upper concrete slab A will be described. First, the lower surface of the upper concrete slab A is turned upside down, and the mounting diver Ca of the vibration reducing elastic member C is placed on the lower surface of the upper concrete slab A so as to be placed on the upper concrete slab A. That is, after positioning the upper end of the protrusion Ga protruding upward from the lower surface of the upper concrete slab casting form G with the flat portion of the female screw Cd attached to the elastic member C, the concrete slab is embedded with the mounting diver Ca. Cast until
If the concrete slab is hardened and then removed from the slab form G, the vibration reducing anti-vibration slab as a vibration reducing pavement structure in which the vibration reducing elastic member C and the upper concrete slab A are integrated (FIG. 7). ) Is completed.
[0014]
Next, as shown in FIG. 8, the vibration reducing concrete slab completed by demolding is inverted and placed side by side on the bottom plate member B to form an upper concrete slab. A number of the upper concrete slabs are connected to each other by various methods to block the slab through hole Aa, and if necessary, asphalt or the like is applied to the surface thereof so that it can be used as a vibration-proof slab for roads.
[0015]
Next, in FIG. 8, the most important level adjustment at the time of construction and the injection process of mortar and the like will be described.
First, the pipe-shaped male screw D shown in FIG. 3 is inserted into the female screw Cd attached to the elastic member bottom surface adhesive plate Cc of the vibration reducing elastic member C from the upper slab hole. The upper concrete slab A is moved vertically by moving the upper concrete slab A up and down by screwing in with a jig (not shown) using the rotation slit Dd formed in the male screw D, and the lower end abutting against the bottom plate member B. Adjust. Thus, the elastic member bottom surface adhesive plate Cc has a function of distributing stress to the elastic member when the upper concrete slab A is leveled using the integrated level adjusting female screw Cd.
[0016]
When the level is thus adjusted, the elastic sealing material Ce attached to the vibration reducing elastic member C is in complete surface contact with the upper surface of the bottom plate member B due to its elastic deformation. In this state, the injection mortar H is injected from the inner diameter Dc of the pipe-shaped male screw D having an opening at the outer periphery of the tip, and the space I is filled and fixed. The level adjusting pipe D after the injection mortar has hardened may be pulled out by reversing the screw, but may be buried without being pulled out if not fixed to the upper concrete slab A.
Even if the injection pressure is applied to the inside of the mortar injection part I, the elastic sealing material Ce is elastically deformed and adhered to the bottom plate member B, so that the sealing action is exerted, and the mortar etc. flows out from the mortar injection part I to the outside. To stop doing.
[0017]
Here, the present applicant conducted an actual vehicle test in order to confirm the vibration reduction effect of the present invention. The experimental results will be described next. First, for the upper concrete slab A as the upper slab, a 200 × 3900 × 2500 mm reinforced concrete plate is used, and the four elastic members C (vertical spring constant: 2 t / cm · piece, 300φ × 100H) are attached thereto. The road width was 5200 mm (3900 + side road), the traveling direction was 2500 mm, and 14 pieces were firmly connected by connecting joints (three connecting portions). The bottom plate member B as the lower slab was a reinforced concrete plate of 200 × 4240 × 2500 mm, and was arranged on the roadbed. The level adjustment hole Aa of the upper concrete slab A was covered with a hole to close the hole, and the surface was given asphalt with a thickness of 30 mm. For comparison, conventional asphalt-structured test roads are arranged side by side in the direction of travel.
A single vehicle was used as the vehicle, and the vehicle with rear wheel axle loads of 6 ton and 12 ton was run at a speed of 50 km / h.
[0018]
It has been found that the vibration reducing pavement structure and the pavement method using the same according to the present embodiment have the following effects.
(1) The amount of vibration reduction is 3.9m wide (equivalent to about 1 lane) compared to the conventional paved road at the vertical vibration acceleration level (conforming to JIS C 1510) on the road boundary 5m from the road center. 7 to 11 dB (when the axle load is 6 · 12 tons and the speed is 50 km / h).
(2) When the vehicle runs with a 12 ton axle load, the vertical deflection of the upper concrete slab A by the vehicle is about 3.5 to 4.5 mm, which is in a range where there is no problem in practical operation.
In addition, when a high load is applied, since the bending is limited by the elastic stopper Cb that contacts only the high load, the durability of the elastic member C and the upper concrete slab A is ensured.
(3) Since the elastic member C is integrally attached at a predetermined position when the upper concrete slab A is manufactured, positioning in the plane direction during construction between the elastic members C is unnecessary.
(4) The vertical positioning of the upper concrete slab A can be easily adjusted up and down by screwing and rotating the pipe-shaped male screw D into the female screw Cd attached to the elastic member bottom surface adhesive plate Cc.
(5) Mortar that fills the space between the bottom surface of the elastic member C and the top surface of the base plate member B is made through a pipe inner diameter hole Dc for level adjustment, and the elastic member C itself is provided with an elastic sealing material Ce portion for preventing mortar escape. Therefore, a special mortar formwork is not required and construction is easy.
[0019]
【The invention's effect】
According to the vibration reduction pavement structure according to the present invention, the elastic member for vibration reduction provided between the roadbed and the upper concrete slab is provided with an elastic stopper having a lower height than the elastic support portion that supports the upper concrete slab, When an impact force of a predetermined value or more is applied to the upper concrete slab, the lower surface of the upper concrete slab collides with an elastic stopper and elastically deforms, thereby limiting the elastic deformation of the elastic support portion and absorbing the impact force. Therefore, the impact force caused by the vehicle running vibration is smoothly absorbed by the elastic support part, and the elastic stopper suppresses the deformation of the upper concrete slab and the elastic support part, and as a result, The vertical vibration level generated in the case can be significantly reduced compared to the conventional case, noise and vibration generation to the surroundings can be reduced as much as possible. Durability of the vibration relief elastic member, an effect which can thus greatly improve the durability of the road.
Further, since the level adjusting means is provided, adjusting the level adjusting means has an effect of easily positioning the upper concrete slab in the vertical direction.
In addition, since the elastic sealing material is provided on the bottom surface of the vibration reducing elastic member, it is possible to avoid leakage of mortar etc. from the space part to the outside during injection work of mortar etc. This eliminates the need for the formwork, and has the effect of facilitating the construction.
Furthermore, according to the vibration reducing pavement method according to the present invention, the road upper concrete slab is placed on and supported by the road base via the vibration reducing elastic member, and the vibration acting on the upper concrete slab is reduced by the vibration. A vibration reducing pavement method for absorbing the elastic member by elastic deformation, wherein the vibration reducing elastic member is provided with pipe-like level adjusting means capable of adjusting the upper and lower levels of the upper concrete slab by screwing operation. Since the mortar is injected and filled into the space existing on the bottom surface of the vibration reducing elastic member through the pipe hole of the level adjusting means, a special mold for mortar fixing is not required. In addition, it is possible to easily adjust the vertical position of the upper concrete slab by the level adjusting means.
[Brief description of the drawings]
FIG. 1 is a perspective view of an upper concrete slab according to an embodiment of the present invention.
FIG. 2 is a perspective view of a bottom plate member.
FIG. 3 is a pipe-shaped male screw for adjusting the vertical level.
FIG. 4 is a side view of the present invention.
FIG. 5 is a plan view of an elastic member.
FIG. 6 is a cross-sectional view of an elastic member.
FIG. 7 is a cross-sectional view of attaching an elastic member to an upper concrete slab.
FIG. 8 is a cross-sectional view when adjusting the upper and lower levels of the upper concrete slab.
[Explanation of symbols]
A ... Upper concrete slab, Aa ... Slab through hole, B ... Bottom plate member, C ... Elastic member, Ca ... Mounting lever, Cb ... Elastic stopper, Cc ... Elastic member bottom adhesive plate, Cd ... Female screw for level adjustment, Ce ... Elastic sealing material, Cf: elastic member upper pressure-receiving surface, Cg: elastic part (elastic support part) that is always supported, D: male pipe for level adjustment (pipe for level adjustment), Da: male thread part, Db: pipe Opening at the outer periphery of the tip, Dc: pipe inner diameter hole, Dd: slit for rotating the pipe, E: surface layer material, F: roadbed, G: formwork for placing concrete, Ga ... projection for attaching the elastic part of the formwork, H ... Injection mortar, I ... Mortar injection part,

Claims (6)

In a road pavement structure composed of a bottom plate member, a special elastic member of an intermediate layer, and an upper concrete slab that is directly subjected to a wheel load, the elastic member absorbs vibration by elastic deformation, and the elastic member An elastic stopper having a lower height than the elastic support portion is provided, and when an impact force of a predetermined value or more acts on the upper concrete slab, the lower surface of the upper concrete slab collides with the elastic stopper and elastically deforms, A vibration reducing pavement structure configured to absorb the impact force while restricting elastic deformation of the elastic support portion. Wherein the elastic support portion of the elastic member, provided a plurality of projections, the vibration relief pavement structure according to claim 1, wherein the protrusion portion is characterized in that is embedded in the lower surface of the upper concrete slab. The adhesive plate such as a steel plate on the lower surface of the elastic member is fixed, the vibration relief pavement structure according to claim 1 or 2, wherein the fixing the said female thread in adhesive plate. A vibration-reducing pavement in which an upper concrete slab for road is placed and supported through the elastic member used in claim 1 and the vibration acting on the upper concrete slab is absorbed by elastic deformation of the vibration-reducing elastic member. The vibration reducing elastic member is provided with pipe-like level adjusting means capable of adjusting the upper and lower levels of the upper concrete slab by screwing the elastic member, while the vibration reducing elastic member is provided through a pipe hole of the level adjusting means. In the vibration reducing pavement method , wherein the level adjustment means includes a female screw provided on the vibration reducing elastic member, and the female screw. Adjusting the vertical level of the upper concrete slab by adjusting the screwing amount of the male screw. That level adjustment male screw member and the dynamic relief paving method vibration you characterized in that it is formed in. When the elastic member for vibration reduction is provided with an elastic stopper having a height lower than that of the elastic support portion for supporting the upper concrete slab, and an impact force of a predetermined value or more acts on the upper concrete slab, the upper concrete slab 5. The vibration according to claim 4, wherein the lower surface abuts against the elastic stopper and is elastically deformed so that the impact force can be absorbed while restricting elastic deformation of the elastic support portion. Reduced paving method. An elastic sealing material portion that elastically deforms by elastically contacting the bottom plate member is provided on the outer peripheral portion of the bottom surface of the vibration reducing elastic member, and mortar and the like supplied to the space portion are prevented from flowing out by the elastic sealing material. The vibration reducing pavement method according to claim 5 , wherein the vibration reducing pavement method is configured.

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