JP2001040620A - Soundproof wall formed of precast concrete, and method for constructing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a soundproof wall formed of precast concrete, which can be constructed by reducing labor and shortening a construction period. SOLUTION: Soundproof walls 1 which each include a fixing portion 11 to be fixed onto an upper surface of a concrete structure and a panel portion 12 to be erected with respect to the concrete structure, are serially fixed by U bolts 41, respectively. Bolt holes 14 are formed in the fixing portion 11 of each soundproof panel 1, into which the U bolt 41 arranged in a felloe guard 2 of the concrete structure is inserted. Further, an upper portion of each bolt hole 14 is expanded to form an injecting portion 14' opening in an upper surface of the fixing portion 11, and a washer 9 is arranged in a manner covering the injecting portion 14'. Then, an injection opening 92 which communicates with the injection portion 14', is formed in the washer 9. Thus, a filler 31 is injected from the injection opening 92 via the injection portion 14' into the bolt holes 14.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a soundproof wall made of precast concrete standing on an elevated portion of a viaduct or a retaining wall of a railway or the like, and more particularly to an improvement of a fixed portion.

[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.

[0003]

However, in order to form a soundproof wall by connecting panels each having a predetermined width, the bottom of the panel must be fixed to the ground cover. This is because a fixing bolt provided in the ground cover is inserted into a bolt hole formed in the bottom of the panel, a nut is fastened to the fixing bolt, and mortar or the like is inserted into a gap between the ground cover and the panel bottom. It is interposed. At this time, a gap is formed around the bolt, and this gap is necessary for adjusting the position of the panel and workability. However, since a problem such as a decrease in strength or the like occurs as it is, the gap is filled with a filler.
In this filling operation, once the mortar has hardened, the bolts once tightened are loosened, the filler is injected, and then the bolts are tightened again. For this reason, it is troublesome twice and the construction period is extended at present. The present invention has been proposed in view of the above, and aims to reduce labor and shorten the construction period in a soundproof wall made of precast concrete.

[0004]

In order to achieve the above object, a first aspect of the present invention is to provide a precast concrete soundproof panel in which a soundproof panel made of precast concrete is fixed in a row on an upper surface of a reinforced concrete structure by anchor bolts. In the concrete soundproof wall, the soundproof panel includes at least a fixing portion fixed to an upper surface of the concrete structure and a panel portion standing upright with respect to the concrete structure, and the fixing portion of the soundproof panel includes a concrete structure. In addition to opening a bolt hole for inserting an anchor bolt provided in the ground cover part, an upper end part of the bolt hole is extended to provide an injection part that opens to an upper surface of the fixing part, and an injection part is provided on an upper surface of the fixing part of the soundproof panel. In the washer to be placed, an injection port communicating with the injection section is opened, and the bolt hole is filled from the injection port of the washer through the injection section. It is a precast concrete soundproof wall so as to inject. According to a second aspect of the present invention, in addition to the configuration of the first aspect, the anchor bolt is formed of a U-bolt, the injection portion straddles a pair of bolt holes provided in the fixing portion, and the washer is provided on the fixing portion. This is a precast concrete soundproof wall that covers the injection section and has an injection port opened in the middle of both bolt holes and communicates with both bolt holes via the injection section. According to a third aspect of the present invention, a mortar is provided on a ground covering part of a reinforced concrete structure on which anchor bolts are arranged, and a fixing part fixed to an upper surface of the ground covering part and a panel part standing upright above the mortar. A bolt hole for inserting an anchor bolt provided in a ground covering portion of a concrete structure is provided in the fixing portion, and an upper end portion of the bolt hole is expanded to open into an upper surface of the fixing portion. A soundproof panel manufactured in advance so as to be provided was suspended, an anchor bolt of the ground covering part was inserted into a bolt hole provided in a fixing part of the soundproof panel, and an injection port communicating with an injection part of the fixing part was opened. A washer is arranged on the upper surface of the fixing portion, the position of the soundproof panel is adjusted, and the surfaces of the adjacent soundproof panels are adjusted. After the adjustment of the soundproof panel is completed, loosen the anchor bolts. And fastening the lock nut to secure the acoustic panel, a method of applying pre-cast concrete sound barriers of injecting filler into the bolt hole through the injection portion of the fixed portion from the inlet opened in the washer. According to a fourth aspect of the present invention, in addition to the configuration of the third aspect, an injection portion for communicating a plurality of bolt holes to the fixing portion of the soundproof panel is provided, and a filler is provided from the injection hole of the washer to the plurality of bolt holes. This is a method of constructing a precast concrete soundproof wall in which the steel is injected.

[0005]

An embodiment of the present invention will be described below with reference to the drawings. The precast concrete soundproof wall according to the present invention is to be constructed on a railway line, a road, or the like, and the outline thereof is that a concrete panel previously manufactured at a factory is provided on a ground cover 2 provided on a side edge of a concrete structure.
Mortar 3 on the upper surface of the floor so that the surface is flat
Are provided along the length direction, and each panel is fixed on the mortar 3 in rows by anchor bolts 4.

[0006] The concrete panel, that is, the soundproof panel 1 is a fixed part 1 mounted on the upper surface of a concrete structure.
1 and a panel portion 12 that rises from one side of the fixing portion 11. In the illustrated embodiment, the outer rib portions 13a are provided on both side edges of the panel portion 12, and furthermore, near the center. Two inner ribs 13b are provided, and a total of four ribs 13 are provided. The soundproof panel 1 is produced in advance at a factory or the like using concrete such as ordinary concrete, fiber reinforced concrete, or polymer concrete.

When the soundproof panel 1 is manufactured, the fiber reinforced concrete is basically made of concrete having high sound insulation properties, and is made of steel fiber, carbon fiber, glass fiber or the like in order to increase its structural strength. A high-strength fiber material can be mixed at an appropriate mixing ratio to achieve high strength and light weight.

Next, the structure of the soundproof panel 1 will be described.
The soundproof panel 1 includes the fixing portion 11, the panel portion 12, and the rib portion 13 as described above. The fixing part 11 is a base part of the soundproof panel 1, and is formed in a substantially rectangular shape in a plan view, and the lower surface is formed flat so as to be placed on the ground covering part 2. Further, a bolt hole 14 for inserting the anchor bolt 4 is formed in the fixing portion 11 at a predetermined position in a long hole shape. The bolt hole 14 is formed in a tapered shape in which the lower end is slightly enlarged in diameter, so that the insertion and positioning of the anchor bolt 4 are facilitated.

On the upper surface of the fixed part 11 of the soundproof panel 1, there is provided an injection part 14 'for a filler 31 to be described later.
The injection portion 14 ′ is obtained by expanding the upper end portion of the bolt hole 14, and in the illustrated embodiment, a pair of bolt holes 14,
The upper surface portion of the fixing portion 11 is recessed so that 14 is connected at the upper end portion (see, for example, FIG. 16).

The panel portion 12 is a main portion of the soundproof wall. The panel portion 12 rises vertically from one side of the fixed portion 11, that is, a side edge on the outside of a route or the like, and gradually loosens from almost the middle to the inside. It is curved.

The rib portion 13 reinforces the panel portion 12, and includes a pair of outer rib portions 13a provided at least on both side edges of the panel portion 12. In the illustrated embodiment, the rib portion 13 is almost at the center. Two inner ribs 1 provided at equal intervals
3b. The outer rib portion 13a
Are used to connect adjacent soundproof panels 1. At a predetermined position of the outer rib portion 13a, a bolt insertion hole 15a for opening and tightening a bolt at the time of construction is provided, and a supporting plate 16 is provided on the inner surface of both outer rib portions 13a. At a predetermined position of the inner rib portion 13b, an insertion hole 15b used for lifting is formed at substantially the same position as the bolt insertion hole 15a.

Each of the ribs 13 is formed in a substantially trapezoidal shape in which the base end side, that is, the panel section 12 side is thick and the front end side is thin. The outer end surface of the outer rib portion 13a is substantially upright from the panel portion 12 so as to contact the outer rib portion 13a of the adjacent soundproof panel 1. On the outer end surface of the outer rib portion 13a, a substantially trapezoidal groove portion 17 fitted when the adjacent soundproof panels 1 are abutted, and a trapezoidal ridge portion 18 corresponding to the groove portion 17 are formed on both outer sides. Rib part 1
It is formed vertically along the leading edge of 3a. Note that the soundproof panel 1 can be formed of a single plate, but in this case, the connection is made at the side end surface of the panel.

In addition, each corner of the soundproof panel 1 is chamfered at an appropriate inclination. At a desired position, for example, an embedded bolt 19 used for electrical work or the like is used.
Is provided. Furthermore, it is also possible to form a decorative portion on the surface of the panel portion 12 by providing an uneven pattern, or by coloring or painting. The soundproof panel 1 can arrange auxiliary muscles and the like as necessary.

On the other hand, the fixing portion 11 of the soundproof panel 1 described above.
A pair of bolt holes 14 and 14 and an injection portion 1
A washer 9 covering 4 'is provided. The washer 9 is provided with through holes 91, 91 through which the U bolt 41 passes, and is provided at a position corresponding to the injection portion 14 'of the fixing portion 11 described above.
2, and the injection port 92 and the bolt hole 14 are communicated with each other via the injection section 14 'of the fixing section 11. In the illustrated embodiment, an inlet 92 is provided between the two bolt holes 14.

Next, a method for constructing a soundproof wall using the above soundproof panel 1 will be described. First, an anchor bolt 4, for example, a U bolt 4 is attached to the ground covering 2 of the concrete structure.
1 is provided. Specifically, for example, as shown in FIG. 4, a structural reinforcing bar 51 and an auxiliary reinforcing bar 52 are arranged in a formwork 61, the bent portion of the U-bolt 41 is locked to the auxiliary reinforcing bar 52, and 41 is passed through the hole of the fixing plate 62, and is fixed at a predetermined pitch while using a positioning ruler 63 provided with a nail 67 on a cutting 66 on the side edge of the formwork 61.
Further, in order to make the embedded length of the U bolt 41 constant,
The vinyl chloride pipe 64 is put on the bolt 41 and fixed with the lower nut 65 a of the locking nut 65. And
The cast-in-place concrete 21 is poured into the mold 61 and cured. In the drawings, the support of the mold 61 is omitted, and the mold 61 may be a buried mold.

When the ground cover 2 having the U bolt 41 is constructed, a design height is determined by stretching a water thread in order to adjust unevenness. Then, in order to prevent the mortar 3 from flowing out, a sealing material 71 made of a polymer substance, for example, EPT (ethy
lene-propylene terpolymer) sponge (hereinafter simply EP
(Referred to as T sponge) in a band shape corresponding to the installation width.

In the illustrated embodiment, a water-blocking material 72 made of an elastic material or the like is installed in a direction substantially at the center of the U-bolt 41, that is, in the middle of the width direction of a pair of bolt heads protruding from the ground cover 2. Along with the adhesive.

Liner plate 73 according to design height
Are appropriately arranged in the vicinity of the U bolt 41 as shown in FIGS. 6 and 7, for example. Then, the mortar 3 is spread inside the sealing material 71. At this time, the height of the mortar 3 is slightly higher than the designed height, for example, about 1 to 2 mm. The floor mortar 3 is of a non-shrink type. In addition, the liner plate 73
Are selected and combined in an appropriate thickness to obtain a desired height.

On the other hand, a plate-like packing material 74 made of EPT sponge is stuck on one side surface of a soundproof panel 1 made of precast concrete produced in advance at a factory, and a semi-cylindrical shape is formed in a groove 17 formed on one side. The formed packing material 75 is attached (see FIG. 8). At this time, the plate-shaped packing material 74 has been cut so as to be correspondingly temporarily reduced in width since the rib portion 13 is narrowed upward (FIG. 9).
And FIG. 10). In addition, this Kamaboko-type packing material 7
5 also consists of an EPT sponge. The work of attaching these packing materials 74 and 75 is performed at the construction site.

Then, the soundproof panel 1 on which the packing members 74 and 75 are attached is lifted by a dedicated hanging jig 81, and is left on the liner plate 73 whose height has been adjusted as described above. When lifting, the inner rib 1
It is lifted at four points using each insertion hole 15b opened in 3b. FIG. 11 briefly shows the suspended state and the stacked state. That is, in the stacked state, the cushioning material packing 82 is interposed between the soundproof panels 1 and the pallet 83 is laid below.

The stationary soundproof panel 1 is passed through the bolt insertion hole 15a formed in the outer rib portion 13a such that the joint spacing between the adjacent soundproof panels 1 is smaller than the thickness of the packing material 74 described above. It is compressed by the bolt 42 during construction. For example, when the thickness of the packing material 74 is 7 mm, the bolt 42 for construction is tightened so that the joint interval becomes 5 mm.

On the other hand, the soundproof panel 1 is provided by a horizontal device or a vertical device.
Fix your posture. In particular, the first soundproof panel 1 is very important because it serves as a reference for the soundproof panel 1 'to be installed later. In addition, when the panel surfaces of the adjacent soundproof panels 1 do not match, it is easy to fit by tightening the upper end portion indicated by A in FIG. 12 with a jig appropriately interposing a cushioning material. Further, since the bolt hole 14 of the fixing portion 11 is formed in a tapered long hole shape, the position can be easily adjusted.

When the arrangement and the fine adjustment of the soundproof panel 1 are completed, the locking nut 65 is tightened with a predetermined torque using a torque wrench. At this time, the washer 9 is interposed on the upper surface of the fixing portion 11. That is, both heads of the U bolt 41 are passed through the through holes 91, 91 of the washer 9 to make the injection port 92 communicate with the injection part 14 '. Of the three U-bolts 41 provided per panel, only the outer U-bolts 41 are tightened and temporarily fixed, and after the mortar 3 is hardened, the center U-bolts 41 are preferably tightened and fixed (FIG. 14). reference).

When the mortar 3 is hardened, the filling material 31 is injected into the bolt holes 14 for finishing.
According to the present invention, the filling material 31 can be injected without loosening the locking nut 65. That is, the bolt hole 14 opened in the fixing portion 11 is connected to the injection portion 14 ′, and the injection portion 14 ′ communicates with the outside through the injection hole 92 opened in the washer 9. Therefore, the filler 3
1 injects each bolt hole 14 through the injection portion 14 '.
The filling material 31 goes around. The filling material 31 is preferably of a non-shrink type like the mortar 3.

According to the construction method of the soundproof wall according to the present invention as described above, the locking nut 65 for fixing the soundproof panel 1 is provided.
The filling material 31 can be injected into the bolt hole 14 without loosening, so that the man-hour can be reduced and the construction period can be shortened.

Although the present invention has been described with reference to the illustrated embodiments, the present invention is not limited to the above-described embodiments, and can be arbitrarily implemented unless the structure described in the claims is changed.

[0027]

In summary, the present invention comprises a sound-insulating panel having a fixing portion fixed to the upper surface of a concrete structure and a panel portion standing upright with respect to the concrete structure, being fixed in a row by anchor bolts. In a soundproof wall made of precast concrete, a bolt hole for inserting an anchor bolt provided in a ground cover of a concrete structure is opened in a fixing portion of the soundproof panel, and an upper end portion of the bolt hole is expanded to fix the fixing portion. An injection port is provided on the upper surface of the base, and a washer arranged to cover the injection section is provided with an injection port communicating with the injection section, and the filler is injected from the injection port into the bolt hole through the injection section. As a result, filler material can be injected into the bolt holes without loosening the locking nut that secures the soundproof panel, reducing man-hours and Shorten the construction period is possible. In addition, since the work is performed without loosening the locking nut which is positioned and fixed, the soundproof panel does not shift during the work, and a soundproof wall having a good finish can be provided without the need for readjustment.

[Brief description of the drawings]

FIG. 1 is a front view of a soundproof panel.

FIG. 2 is a rear view and a cross-sectional view of the soundproof panel.

FIG. 3 is a side view of the soundproof panel.

FIG. 4 is a cross-sectional view of a ground covering portion in a state where a U bolt is positioned.

FIG. 5 is a plan view of a ground cover in a state where a U bolt is positioned.

FIG. 6 is a cross-sectional view of a ground covering portion provided with an inflatable water-stopping material, a liner plate, a sealing material, and a mortar.

FIG. 7 is a plan view of the same.

FIG. 8 is an enlarged view of one side portion of the soundproof panel.

FIG. 9 is a sectional view of an upper portion in a state where adjacent soundproof panels are connected.

FIG. 10 is a sectional view of a lower portion in a state where adjacent soundproof panels are connected.

FIG. 11 is an explanatory diagram of a state where the soundproof panel is lifted and stored.

FIG. 12 is a rear view and a side view showing a connection state of the soundproof panel.

FIG. 13 is a cross-sectional view of a main part showing a construction process of the soundproof wall.

FIG. 14 is a rear cross-sectional view of a main part showing a construction process of the soundproof wall.

FIG. 15 is a cross-sectional view of a main part of the soundproof wall after the construction is completed.

FIG. 16 is a longitudinal sectional view of a fixing portion of the soundproof panel.

FIG. 17 is a cross-sectional view of the soundproof panel showing the relationship between the fixing portion and the washer.

FIG. 18 is a plan view of a washer.

FIG. 19 is a plan view of a main part with a part removed for explaining the periphery of an injection part.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Soundproof panel 2 Ground covering part 3 Mortar 4 Anchor bolt 9 Washer 11 Fixed part 12 Panel part 13 Rib part 13a Outer rib part 13b Inner rib part 14 Bolt hole 14 'Injection part 31 Filler 65 Lock nut 71 Sealing material 72 Water stopping material 74 Packing material 75 Packing material 91 Through hole 92 Inlet

Claims (4)

[Claims] 1. A precast concrete soundproof wall comprising precast concrete soundproof panels fixed in rows by anchor bolts on an upper surface of a reinforced concrete structure, wherein the soundproof panel is fixed to an upper surface of the concrete structure. At least a fixing part and a panel part standing upright with respect to the concrete structure are provided.The fixing part of the soundproof panel is provided with a bolt hole for inserting an anchor bolt provided in a ground covering part of the concrete structure. The upper end of the bolt hole is extended to provide an injection portion that opens to the upper surface of the fixing portion. The washer disposed on the upper surface of the fixing portion of the soundproof panel has an injection port that communicates with the injection portion. Precast concrete characterized by injecting filler into the bolt hole from the injection port through the injection part Soundproof wall. 2. An anchor bolt comprising a U-bolt, an injection portion straddles a pair of bolt holes provided in a fixing portion, and a washer covers the injection portion of the fixing portion and is opened in the middle of both bolt holes. The soundproof wall made of precast concrete according to claim 1, wherein the inlet communicates with both bolt holes via the injection portion. 3. A mortar is provided on a ground covering part of a reinforced concrete structure on which anchor bolts are arranged, and at least a fixing part fixed to an upper surface of the ground covering part and a panel part standing up are provided above the mortar. The fixing portion is provided with a bolt hole for inserting an anchor bolt provided in a ground cover portion of the concrete structure, and an injection portion is provided by expanding an upper end portion of the bolt hole and opening to an upper surface of the fixing portion. A previously manufactured soundproof panel is hung, an anchor bolt of the ground cover is inserted into a bolt hole provided in a fixing part of the soundproof panel, and a washer having an injection port communicating with an injection part of the fixing part is fixed to the fixing part. After adjusting the position of the soundproof panel and adjusting the surfaces of the adjacent soundproof panels, after the adjustment of the soundproof panel is completed, the locking bolt is fixed to the anchor bolt. A method for constructing a soundproof wall made of precast concrete, characterized in that the soundproof panel is fixed by tightening and a filler is injected into a bolt hole through an injection part of a fixing part from an injection opening formed in the washer. 4. The fixing part of the soundproof panel is provided with an injection part for communicating a plurality of bolt holes, and a filler is injected from the injection hole of the washer into the plurality of bolt holes. The construction method of the precast concrete soundproof wall described.