JP2001020230A - Precast concrete sound insulation wall for use of special place and its execution method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a precast concrete sound insulation wall for use of special places which can lighten the weight and which is exellent in workability, safety, landscape, and other overall factors. SOLUTION: This sound insulation wall is provided with a telegraph pole foundation 21 in which reinforcements 72 for connection of the foundation side are arranged in a specified anchorage length and a sound insulation panel 3 for the telegraph pole part formed after reinforcements 32 for connection of the sound insulation panel are embedded in a specified position in a specified anchorage length and a cylindrical sleeve 5 for a reinforcement are arranged in order to erect the telegraph pole. When the sound insulation panel 3 is installed in the foundation part 21 for the telegraph pole, the reinforcements 72 for connection of the foundation side are arranged to butt against the reinforcements 32 for connection of the sound insulation panel and the sleeve 5 is inserted and further, a grout material 6 is filled in the space in the sleeve 5 and cured to mutually unify these reinforcements 32, 72 for connection. In this way, a force of the sound insulation panel 3 is transmitted to the telegraph pole foundation 21 through the grouting material 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a precast concrete sound-insulating wall installed on an elevated portion of a viaduct or a retaining wall of a railway or the like, and more particularly, to a precast concrete sound-insulating wall for a special portion having a widened width. And its construction method.

[0002]

2. Description of the Related Art As is well known, on a railway line such as a Shinkansen or a conventional line, a soundproof wall having a soundproofing or sound absorbing function is installed so as to prevent noise from being scattered around.
This soundproof wall is based on the fact that a concrete wall is erected on the side edge of the roadbed to prevent noise from leaking to the outside. It is configured to be installed in the middle or to be connected independently. In addition, a special portion having an increased width is formed on the roadbed in order to erect a utility pole or to use it as a material storage area or a shelter.

[0003]

A soundproof panel formed to have a predetermined width may be connected to a linear standard part having a constant width of a roadbed. However, a special part having a widened width is separately provided. A noise barrier corresponding to the width must be formed.
Therefore, conventionally, this special part is constructed by casting in place, combining a plurality of pre-cast concrete soundproof panels formed into a curved surface, or attaching a galvanized iron plate. However, cast-in-place concrete construction has a problem in that the thickness of the soundproof wall becomes large and the scenery is problematic. Also,
At the time of construction, a temporary scaffold is also required outside the roadbed, which poses a problem in terms of safety. On the other hand, those formed by combining a plurality of soundproof panels made of precast concrete are advantageous in terms of safety because work can be performed in the roadbed, but the number of fixing points of the soundproof panels increases,
There is a problem in securing a work space for mounting.
Further, at present, a soundproof wall made of an iron plate cannot be obtained in view of the scenery, although the wall thickness can be reduced. The present invention has been proposed in view of the above, and an object of the present invention is to provide a soundproof wall made of precast concrete of a special part, which is excellent in weight reduction, workability, safety, landscape, etc. .

[0004]

Means for Solving the Problems To achieve the above object, the invention according to claim 1 is constituted by fixing a plurality of precast concrete soundproof panels in a row on an upper surface of a reinforced concrete structure with anchor bolts. A precast concrete soundproof wall for a special part formed in a special part obtained by widening the reinforced concrete structure, wherein the base part is provided at a predetermined position of a base part of the widened reinforced concrete structure. A special part formed by arranging the reinforcing bars for the side joints at a predetermined fixing length, and the reinforcing bars for the soundproofing panel side are embedded at predetermined positions at a predetermined fixing length, and a cylindrical sleeve for a reinforcing bar joint is arranged. The pre-cast concrete soundproof panel for the special part is provided, and the soundproof panel for the special part is installed in the special part. At the time of joining, the joining reinforcing bar on the base portion side of the special portion and the joining reinforcing bar on the soundproofing panel side are inserted into the sleeve, and the gap in the sleeve is filled with a grout material and hardened, thereby joining the both ends. This is a precast concrete soundproof wall for a special part in which reinforcing steel bars are integrated with each other and the force of the soundproof panel is transmitted to the foundation through the hardened grout material. The invention described in claim 2 is, in addition to the configuration of claim 1, before or after arranging a precast concrete soundproof panel for a special part in a special part of a reinforced concrete structure. It is a soundproof wall made of precast concrete for a special part in which a utility pole is installed in the special part. The invention described in claim 3 is based on claim 1 or 2
In addition to the above structure, a fixed or irregular sealing is provided on the joint surface between the precast concrete soundproof panel for the special part provided on the special part of the reinforced concrete structure and the precast concrete soundproof panel for the standard part provided on the standard part. It is a precast concrete soundproof wall with special materials. According to a fourth aspect of the present invention, there is provided a precast concrete soundproof wall constructed by fixing a plurality of precast concrete soundproof panels in a row with anchor bolts on an upper surface of a reinforced concrete structure. At the specified position of the object, the reinforcing bar for the base part side is arranged at a predetermined fixing length to form a special part, the reinforcing bar for the soundproof panel side is embedded at the predetermined position at the predetermined fixing length, and at the same time, A special-section precast concrete soundproof panel provided with a cylindrical sleeve is installed in the special section, and the reinforcing bar on the base section side of the special section and the reinforcing bar on the soundproof panel side are inserted into the sleeve. The grout material is filled into the gap in the sleeve and hardened, and the reinforcing steel is joined to each other by the hardening of the grout material. Is embodied, is a method of applying a special unit for precast concrete soundproof wall so as to transmit to the base portion of the power of acoustic panel via the cured grout. According to a fifth aspect of the present invention, in addition to the configuration of the fourth aspect, a special part for installing a reinforced concrete or steel utility pole before or after disposing a soundproof panel on a special part of a reinforced concrete structure. The construction method of the precast concrete soundproof wall. According to a sixth aspect of the present invention, in addition to the constitution of the fourth or fifth aspect, a soundproof panel made of a precast concrete for a special part provided on a special part of a reinforced concrete structure and a precast concrete for a standard part provided on a standard part are provided. This is a construction method of precast concrete soundproof walls for special parts in which the joint surface with the soundproof panel is treated with a fixed or irregular shaped sealing material.

[0005]

An embodiment of the present invention will be described below with reference to the drawings. The precast concrete soundproof wall 1 for a special part according to the present invention is to be constructed on, for example, a railway line or a road, and is provided on a special part 2 whose width is widened. In addition, in the illustrated embodiment, a power pole part on which a power pole is erected as the special part 2 will be described, and will be hereinafter abbreviated as a power pole part.

The soundproof panel 3 for the utility pole is a precast concrete panel manufactured in advance at the factory, like the soundproof panel 4 for the standard part. This soundproof panel 3 for electric poles has, for example, a semi-cylindrical shape as shown in FIGS. 1 to 6, and mesh bars 31 are appropriately arranged inside. Further, a cylindrical sleeve 5 for a joint to be described later is provided at a lower end portion.
Along with this (hereinafter simply abbreviated as the sleeve 5), a soundproof panel-side joining reinforcing bar 32 is provided at a predetermined position with a predetermined fixing length. In addition, the soundproof panel 3 for a telephone pole part has a height of about 1.8 m, a width of about 700 mm, and a thickness of about 1 mm.
It is about 00 to 150 mm. It should be noted that deformed reinforcing bars are used for the reinforcing bars 32 and the mesh bars 31 for the soundproof panel side.

The lower part of the outer surface (convex surface) of the sound pole panel 3 for a utility pole is provided with a decorative portion 33 having a raised pattern.
And decorative grooves 34 are formed near the upper and lower ends. The decorative portion 33 and the decorative groove 34 form a design that is continuous with the adjacent standard portion soundproof panel 4.

The joint sleeve 5 provided at the lower end portion of the soundproof panel 3 has an insertion hole 51 penetrating in the longitudinal direction, and an upper through hole near the upper end, which communicates with the insertion hole 51 and opens laterally. 52 (discharge port), and a lower through-hole 53 that opens laterally in communication with the insertion hole 51 near the lower end.
(Injection port) (see FIG. 10). In addition, the insertion hole 51 is formed in a tapered shape in which the upper side is slightly reduced in diameter, and has an uneven portion (not shown) inside.
Is formed. Further, a stopper 54 is provided at a substantially central portion of the insertion hole 51 so as to lock the inserted rebar. The lower through hole 53 serving as an inlet for the grout material 6 described later is wider than the upper through hole 52, and the opening diameter of the insertion hole 51 is larger than the outer diameter of the reinforcing bars 32, 72 to be inserted. It is large and the rebars 32 and 72 can be inserted with a margin.

The above-mentioned sleeve 5 is previously embedded in the lower end portion of the soundproof panel 3 for a utility pole at appropriate intervals. In the illustrated embodiment, four sleeves 5 are buried, and the upper half of the insertion hole 51 of each sleeve 5 is inserted with a soundproof panel-side joining reinforcing bar 32, respectively. Are fixed to the mesh streaks 31.

On the other hand, the lower open end of the insertion hole 51 of each sleeve 5 is open to the lower end surface of the soundproof panel 3. The upper through-hole 52 and the lower through-hole 53 of each sleeve 5 are opened on the inner peripheral surface of the soundproof panel 3.

[0011] The soundproof panel 3 for the telephone pole section as described above includes:
It can be pre-produced in a factory by a normal production process. At this time, when embedding the sleeve 5, a rubber stopper, a cap, or the like is used to prevent the concrete bar from entering the insertion hole 51. In addition, a special jig for positioning the sleeve 5 can be used while the rubber stopper is expanded in the inside of the insertion hole 51 to prevent the intrusion of the rubber plug.

The ground cover 7 on which the soundproof wall 1 is erected is provided with a telephone pole 8.
Is provided with a utility pole base portion 21 for standing up. The utility pole base portion 21 is provided in a cylindrical shape to protrude from the ground cover portion 7 and has a circular hole 22 in which the utility pole 8 is fitted and stands. The utility pole 8 can be made of either concrete or steel pipe.

In the ground covering part 7, a reinforcing bar 71 is appropriately disposed, and a reinforcing bar 72 for connecting to a base portion penetrating the utility pole base portion 21 is provided. The reinforcing-bar-side joining reinforcing bar 72 is arranged corresponding to the sleeve 5 of the soundproof panel 3 described above. That is, the four reinforcing bars 72 for joining the base portion side in a semicircular arc shape.
However, it rises from the ground covering part 7, and the tip part protrudes from the utility pole base part 21 by a predetermined length. The protruding length of the reinforcing bar 72 for the base portion side corresponds to the length of the lower half of the insertion hole 51 of the sleeve 5 provided in the soundproof panel 3,
A predetermined fixing length is obtained.

Next, a method of installing the precast concrete soundproof wall 1 for the special part 2 according to the present invention will be described. First,
A cylindrical utility pole base 21 is formed in the ground covering 7 by casting in place. At this time, the reinforcing bar 72
And the tip is raised from the utility pole base portion 21 to a predetermined length, that is, a length almost in contact with the stopper 54 of the sleeve 5.

The outer half of the pole base 21, that is, the portion on which the semi-cylindrical soundproof panel 3 previously produced at the factory is mounted, for the purpose of flowing out the mortar or grout material 6 for adjusting unevenness. The sealing material 61 is attached in a belt shape. Note that a polymer material such as EPT can be used for the sealing material 61.

Next, the soundproof panel 3 is lifted by a crane above the electric pole base 21 as described above, and is inserted into the insertion hole 51 of the sleeve 5 buried at the lower end from the electric pole base 21 for joining to the foundation on the side of the electric pole base 21. The soundproof panel 3 is placed on the upper surface of the utility pole base 21 so that the reinforcing bar 72 penetrates.
At this time, since the insertion hole 51 of the sleeve 5 has an inner diameter that has a margin compared with the outer diameter of the reinforcing steel bar 72 for the base portion side, a slight positional deviation can be absorbed. Note that horizontal and vertical adjustments are made as necessary using a liner plate or the like.
Further, since the sealing material 61 is slightly crushed by the load of the soundproof panel 3, it is preferable to use a material thicker than the designed thickness.

After placing the soundproof panel 3 in a predetermined position,
The grout material 6 is injected into the sleeve 5. The grout material 6 preferably has no shrinkage, high strength and excellent fluidity.
For example, non-shrink high strength mortar can be used. For injection of the grout material 6, for example, an injection nozzle connected to a pump is attached to the lower through hole 53 of the sleeve 5 located at the end, that is, the injection port, and the lower through holes 53 of the other sleeves 5 are respectively connected. The grout material 6 is press-fitted with a pump while sealing and opening the upper through-hole 52 of each sleeve 5, that is, the discharge port. Then, the injected grout material 6 rises in the gap between the inner wall of the sleeve 5 to which the nozzle is mounted and the inserted reinforcing bar 72 for the base portion and the reinforcing bar 32 for the soundproof panel, and fills this gap. After that, a state is obtained in which the liquid slightly overflows from the upper through-hole 52 serving as the discharge port. In this state, the upper through-hole 52 is sealed with a sealing plug.

On the other hand, the injected grout material 6 passes through a gap between the upper surface of the utility pole base portion 21 surrounded by the sealing material 61 and the lower surface of the soundproof panel 3, and reaches the next sleeve 5, and reaches the first sleeve 5. Like the sleeve 5, the gap in the insertion hole 51 is raised,
Eventually, it will overflow from the upper through-hole 52. If it slightly overflows, it means that the gap has been sufficiently filled, so that the upper through-hole 52 is sealed as in the case of the first sleeve 5. The upper through hole 52 of the fourth sleeve 5
The grout material 6 is injected until the grout material 6 slightly overflows.

By injecting the grout material 6 in this manner, only one injection point is required, and work can be performed safely and reliably even in a site where only a small work space can be secured. Note that a mortar may be laid beforehand, the soundproof panel 3 may be placed on the mortar, and the grout material 6 may be individually injected into each sleeve 5.

When the grout material 6 injected into each of the sleeves 5 is hardened, the reinforcing bar 72 for joining the base portion and the reinforcing bar 32 for joining the soundproof panel are firmly joined to each other. Therefore, the force applied to the soundproof panel 3 can be transmitted to the ground covering part 7, and the soundproof panel 3 can be securely fixed.

The soundproof panel 3 in the telephone pole section as described above.
May be installed before or after the concrete or steel utility pole 8 is installed on the utility pole base portion 21, and according to the present invention, the construction can be performed without any problem in any case. is there.

On the other hand, in the standard part where the width of the ground covering part 7 is constant and formed linearly, a soundproof panel 4 made of precast concrete for the standard part is installed. The soundproof panel 4 for the standard part is manufactured in advance at the factory, and the soundproof panel 3 for the utility pole part is manufactured.
Similarly, a makeup part 41 and a makeup groove 42 are provided. still,
According to the illustrated embodiment, the soundproof panel 4 for the standard part is:
The two soundproof panels 3 are formed longer by the height of the utility pole base 21.
Are formed so that the top ends of the two coincide.

Since the soundproof panel 4 for the standard part is installed on the straight part, it is easy to secure a work space, and the soundproof panel 4 can be fixed by the U-bolt 43 in the form of a conventional anchor bolt. Further, the installation work of the soundproof panel 3 of the standard part may be performed before the installation of the soundproof panel 3 of the electric pole part, or may be performed after the electric pole part is formed,
Alternatively, the installation of the soundproof panels 3 and 4 can be performed almost simultaneously.

Further, as shown in FIG. 12 (A), the arrangement of the soundproof panel 4 of the standard part and the soundproof panel 3 of the telephone pole part is such that the side surfaces of the soundproof panels 3 and 4 are partially overlapped with each other. Alternatively, the contact may be made at the corners as shown in FIG.

Further, a soundproof panel 4 installed in the standard part,
A fixed sealing material made of rubber sponge or the like is interposed at the joint with the soundproof panel 3 provided on the telephone pole,
Alternatively, a sealing treatment can be performed by injecting an amorphous sealing material such as a synthetic resin. If a gap is provided between the soundproof panels 3 by providing a sealing material, the soundproofing effect can be further enhanced and the scenery can be significantly improved.

According to the construction method of the soundproof wall 1 as described above,
Scaffolding, temporary frames, etc. are not required, and work can be done safely even at high places. In addition, even if the work space is small, the work can be sufficiently performed, and can be performed by ordinary workers without requiring skill. Furthermore, in a construction site, assembling work is mainly performed, and concrete implantation and curing are unnecessary, so that it is hardly affected by the weather.

On the other hand, according to the semi-cylindrical soundproof panel 3 as described above, since the section modulus can be increased, the thickness of the concrete can be reduced and the weight can be reduced. Also, sufficient strength can be obtained with a small number of anchor points.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and can be appropriately implemented as long as the configuration described in the claims is not changed. For example, in the illustrated embodiment, the utility pole portion is described as a special portion, but the special portion can be applied to a material storage area, a shelter, and the like. Although a semi-cylindrical soundproof panel is shown as a special part soundproof panel, a quarter-arc soundproof panel and a standard part soundproof panel are combined to form a semi-oval special part or a rectangular or rectangular soundproof panel. A trapezoidal special part can also be configured. Furthermore, the number of sleeves used can be changed as appropriate.

[0029]

In summary, according to the present invention, a plurality of precast concrete soundproofing panels are widened in a special part of a precast concrete soundproofing wall constituted by fixing a plurality of precast concrete soundproofing panels in a row on an upper surface of a reinforced concrete structure with anchor bolts. A special part formed by arranging reinforcing bars for the base part side at a predetermined fixing length at a predetermined position on the base part of a reinforced concrete structure, and a reinforcing bar for the soundproofing panel side at a predetermined position at a predetermined fixing length. Embedded, and a special portion pre-cast concrete soundproof panel formed by arranging a cylindrical sleeve for a reinforcing joint, when the soundproof panel for the special portion is installed in the special portion, the base portion side of the special portion The joining reinforcing bar and the joining reinforcing bar on the soundproof panel side are abutted and inserted into the sleeve, and the grout is inserted into the gap in the sleeve. It is a soundproof wall and its construction method in which both joining reinforcing bars are integrated with each other by filling and curing, and the force of the soundproof panel is transmitted to the foundation through the cured grout material. The following operational effects can be obtained. The soundproof panel for the special part can be unitized by being produced in advance at a factory, and a general-purpose product can be produced, thereby reducing costs. Skills such as temporary frames, welding, and scaffolding are not required, and ordinary workers can easily perform the assembling work, thereby shortening the working time. In addition, even when working at a high place, the work can be safely performed inside the ground cover, so that the safety is high. In the formation of a special part, for example, in the formation of a telephone pole part, the installation work of the soundproof panel of the special part is possible either before or after installing the telephone pole, and even before the installation of the soundproof panel of the standard part. Since the soundproof panel of this special part can be installed even later, there is no delay in the construction period without being affected by other work processes. The soundproof panel for special parts can be formed thin,
The weight of the soundproof panel can be reduced, and the base portion or the ground covering portion can be simplified. It is possible to provide a decorative part on the surface of the soundproof panel of the special part, forming a design that is continuous with the soundproof panel of the standard part,
It can provide a soundproof wall with excellent scenery. By providing a sealing material between the soundproof panel of the special part and the soundproof panel of the standard part, it is possible to prevent the leakage of noise and the disturbance of the scenery. Further, according to the present invention, it is possible to provide a soundproof wall having excellent overall properties such as weight reduction, workability, safety, and landscape.

[Brief description of the drawings]

FIG. 1 is a front view of a soundproof panel for a utility pole according to the present invention.

FIG. 2 is a side view of a soundproof panel for a utility pole according to the present invention.

FIG. 3 is a sectional view taken along line AA ′ of FIG. 1;

FIG. 4 is a rear view of the soundproof panel for a utility pole according to the present invention.

FIG. 5 is a layout diagram of a soundproof panel for a utility pole according to the present invention.

FIG. 6 is a longitudinal sectional view of a soundproof panel for a utility pole according to the present invention.

FIG. 7 is an explanatory front view of a soundproof wall according to the present invention.

FIG. 8 is an explanatory side view of the soundproof wall according to the present invention.

FIG. 9 is an explanatory longitudinal sectional view of a soundproof wall according to the present invention.

FIG. 10 is an enlarged view description of a main part of the soundproof wall according to the present invention.

FIG. 11 is a sectional view taken along line BB ′ of FIG. 9;

FIG. 12 is a plan view showing an arrangement example of a soundproof panel for a standard part and a soundproof panel for a utility pole part, wherein FIG. 12A is an explanatory diagram of a case where parts are partially overlapped, and FIG. is there.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 soundproof wall 2 special part 3 soundproof panel for utility pole part 4 soundproof panel for standard part 5 sleeve 6 grout material 7 ground covering part 8 utility pole 21 utility pole base part 32 soundproof panel side joining rebar 51 insertion hole 52 upper through hole 53 Lower side hole 72 Reinforcing bar for base side

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Takashi Nakanishi F-term in Ozawa Concrete Industry Co., Ltd. 1-7-16 Kamikaido, Suginami-ku, Tokyo 2D001 AA01 AA05 CA01 CB01 DA02

Claims (6)

[Claims] 1. A precast concrete soundproof wall comprising a plurality of precast concrete soundproof panels fixed in rows by anchor bolts on an upper surface of a reinforced concrete structure, and formed in a special portion where the reinforced concrete structure is widened. A special part formed by arranging reinforcing steel for the base part at a predetermined anchoring length at a predetermined position of the base part of the widened reinforced concrete structure, A special-section precast concrete soundproof panel formed by embedding a reinforcing bar for the soundproof panel side at a predetermined position with a predetermined fixing length, and arranging a cylindrical sleeve for a reinforcing bar joint; When installing the soundproof panel in a special part, the reinforcing steel for the base part side of the special part and the reinforcing steel for the soundproof panel side Are inserted into the sleeve while being filled, and a grout material is filled in a gap in the sleeve and hardened so that the two reinforcing bars are integrated with each other, and the force of the soundproof panel is interposed via the hardened grout material. The soundproof wall made of precast concrete for special parts, characterized in that the sound is transmitted to the foundation. 2. The electric pole made of reinforced concrete or steel is installed in the special part of the reinforced concrete structure before or after installing the precast concrete soundproof panel for the special part in the special part of the reinforced concrete structure. Precast concrete soundproof wall for special parts. 3. A fixed or irregular-shaped sealing material is provided on a joint surface between a special part precast concrete soundproof panel provided on a special part of a reinforced concrete structure and a standard part precast concrete soundproof panel provided on a standard part. The soundproof wall made of precast concrete for a special part according to claim 1 or 2, further comprising: 4. A method for constructing a precast concrete soundproof wall comprising a plurality of precast concrete soundproof panels fixed in a row on an upper surface of a reinforced concrete structure by anchor bolts, wherein a predetermined position of the reinforced concrete structure is widened. At the same time, a special part is formed by arranging the reinforcing steel for the base part side at a predetermined fixing length, and embedding the reinforcing steel for the soundproofing panel side at a predetermined position at a predetermined fixing length, and forming a cylindrical sleeve for a reinforcing joint at a predetermined position. The pre-cast concrete soundproof panel for the special part arranged is installed in the special part, and the reinforcing steel for the base part side of the special part and the reinforcing steel for the soundproof panel side are butted into the sleeve, and inserted into the sleeve. The inside gap is filled with a grout material and hardened, and the hardening of the grout material integrates the two reinforcing bars with each other, Construction methods of precast concrete soundproof wall special unit, characterized in that via the serial cured grout was to transmit the power of the acoustic panel to the foundation. 5. The precast concrete soundproof wall for a special part according to claim 4, wherein a steel pole made of reinforced concrete or steel is installed before or after the soundproof panel is installed on the special part of the reinforced concrete structure. Construction method. 6. A fixed or indeterminate sealing material for a joint surface between a special part precast concrete soundproof panel provided on a special part of a reinforced concrete structure and a standard part precast concrete soundproof panel provided on a standard part. The method for constructing a soundproof wall made of precast concrete for a special part according to claim 4 or 5, wherein the soundproof wall is made of a special part.