JP2502019B2 - Anti-vibration structure of underground wall of building and its construction method - Google Patents

Description

Detailed Description of the Invention

INDUSTRIAL APPLICABILITY The present invention can be applied to general buildings, but is particularly effective when constructing a building near a line through which a train passes or in an area where a large number of large vehicles pass. The present invention relates to an anti-vibration structure for an underground wall and a construction method thereof.

2. Description of the Related Art Conventionally, in the case of building a building (the same applies to areas where a lot of trains and heavy vehicles pass), as shown in FIG. In the ground, a soil retaining wall 3 is formed in advance by soil concrete so as to surround the underground wall 1 ′ of the building to be constructed, and the underground retaining wall 3 ′ is connected to the soil retaining wall 3 inside the soil retaining wall 3 as a foundation of the building 1. It was intended to build buildings and other structures.

However, in the above-mentioned conventional example, in general, in a region where trains and heavy-duty vehicles frequently come and go, the impact at the time of passage is greatly affected by the soil quality of the ground 4. Is transmitted as vibration to the underground wall 1'of the building through the retaining wall 3, which is perceived as low-frequency sound (vibration that is inaudible to the ear but is felt by the body) to the inhabitants in a structure such as a residence. ing. Moreover, it is also known that vibrations are transmitted with various strengths due to the clay or sandstone of the ground. In addition, vibration may not be tolerated not only in the case of residence but also in special facilities (research facilities, hospitals, etc.). However, there is no definitive means to prevent such vibration from reaching the building, and its realization has not yet been seen. The present invention is intended to provide an underground wall anti-vibration structure for a structure and a construction method thereof, which can prevent pollution caused by such vibrations.

According to the structure for preventing vibration of a basement wall of a building according to the present invention, a vibration isolation material such as a styrene foam plate is interposed between an earth retaining wall provided underground and an underground wall of a concrete structure. In addition, a separator having one end attached to the soil retaining wall penetrates through the vibration isolator and the underground wall, and a vibration isolator is provided over the entire length of the outer surface of the separator. And The construction method of the underground wall anti-vibration structure of the building of the present invention is a step of fixing one end of a separator provided with an anti-vibration material over the entire outer surface to the earth retaining wall provided underground, and the separator. A step of providing a vibration isolator along the surface of the soil retaining wall to which is fixed, the step of penetrating the separator through the vibration isolator, and a form at the other end of the separator at a predetermined distance from the vibration isolator. A step of holding, a step of placing concrete between the vibration isolator and the formwork to construct an underground wall of the building, and a step of removing the formwork after the concrete has hardened. It is characterized by including.

The vibration transmitted from the outside of the building to the retaining wall is absorbed and damped by the vibration isolator, so that it does not propagate to the underground wall of the building at all. In addition, the separator, one end of which is attached to the retaining wall to hold the formwork during construction,
In order to remain inside the concrete basement wall after the construction,
Vibration tries to propagate from the retaining wall to the underground wall, which is the foundation of the concrete structure, through the separator, but on the outer surface of the separator, a vibration isolator is provided over the entire length, Vibration is prevented from propagating to the wall.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the embodiments shown in the drawings. A plurality of H-section steels 5 are preliminarily arranged on the ground 4 in an area where train tracks and heavy vehicles frequently come and go. And penetrate vertically. And each adjacent H
The soil retaining wall 3 is constructed by excavating between the shape steels 5 and pouring soil concrete. After that, the earth retaining wall 3
Remove the soil in the area surrounded by. Next, a separator 8 having a rubber or other vibration-damping material 7 made of the same material applied to the entire outer surface is welded to the building side of the H-section steel 5 through an expansion joint 6 such as a turnbuckle on the way. Mount horizontally. The expansion joint 6 is provided to adjust the position of the mold attached to the other end of the separator 8.
The expansion joint 6 is not always necessary. In this state, the vibration isolator 2 made of a styrofoam plate having a predetermined thickness is installed along the surface of the earth retaining wall 3 facing the building 1. At this time, the separator 8 attached to the H-shaped steel 5 is penetrated through the inside of the vibration isolator 2, and the end portion of the separator 8 is arranged at a position spaced from the vibration isolator 2 by an appropriate distance. And corn material 1 at the end
5 are provided. Next, the frame 9 made of a plate material such as veneer is vertically abutted against the cone material 15, and the fastener 13 is screwed to the screw of the cone material 15 to move the frame 9 to the vibration isolation member 2 It is held with a predetermined space between and. Further, on the surface opposite to the surface of the mold 9 facing the soil retaining wall 3 of the mold 9, vertical flaps (edge thick) 10 and 11 for stably holding the mold 9 and each vertical. Bats 10 and 1
The side plates 12 for holding 1 are arranged in an orthogonal state, and the pin 16 or other fastener 14 is inserted into the hole 16 provided at the tip of the fastener 13.
And insert it. In such a state, concrete is poured into the space formed between the vibration isolator 2 and the form 9, and the underground wall 1'that is the foundation of the building 1 is constructed. After that, when the concrete hardens and the basement wall 1'of the building 1 is completed, the fastener 14, the fastener 13, the vertical stiles 10 and 11, the horizontal sill 12, the formwork 9, and the corn material 15 are removed respectively. Thus, as shown in FIG. 2, a concrete structure having a structure in which the vibration isolator 2 is interposed between the retaining wall 3 and the underground wall 1'of the structure 1 is completed. This basement wall 1 '
Since a concave portion after the cone material 15 is removed is formed on the inner surface of the, the antivibration material is filled in the concave portion.
It is most effective to provide the vibration-damping material 7 over the entire area from the separator 8 to the H-shaped steel through the expansion joint 6. Next, to describe the anti-vibration function of the above-mentioned building, the vibration from the vicinity propagating from the ground 4 is absorbed and attenuated by the vibration isolator 2 made of a material different from that of the soil retaining wall 3 to isolate the vibration. Direct propagation from the material 2 to the underground wall 1'of the concrete structure 1 is prevented. On the other hand, even if the vibration applied to the retaining wall 3 is transmitted from the H-shaped steel 5 to the underground wall 1'of the concrete structure 1 through the expansion joint 6 and the separator 8, the vibration-proof material applied to the outside of the separator 8 By 7, the vibration is in a damped state and is prevented from propagating from the separator 8 to the underground wall 1 ′ of the concrete structure 1. In addition, the moisture that gradually tries to permeate through the gap between the separator 8 and the underground wall 1'of the concrete structure 1 through the ground, the retaining wall 3, the vibration isolator 2, etc.
The anti-vibration material 7 applied to the separator 8 prevents the permeation thereof. As a result, the inside of the underground wall 1'of the building 1 can be protected from moisture.

As described above, the structure for preventing vibration of the underground wall of the building according to the present invention propagates from the outside because the vibration isolator is interposed between the underground wall and the earth retaining wall of the concrete structure. The generated vibration is prevented from directly propagating to the underground wall.
In addition, the separator attached to the earth retaining wall to hold the formwork when constructing the underground wall is provided with a vibration-proof material on the entire outer surface, so the concrete retaining structure is constructed from the earth retaining wall through the separator. It is possible to reliably prevent the vibration transmitted to the underground wall of the. Further, the vibration damping material provided on the entire outer surface of the separator has many excellent effects such as preventing moisture from entering the underground wall of the concrete structure through the separator. Further, such an underground wall anti-vibration structure for a building can be easily manufactured by the construction method of the present invention.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional side view of an essential part showing an embodiment of a structure for preventing vibration of a basement wall of a building according to the present invention.

FIG. 2 is an enlarged view of a cross section taken along the line AA of FIG.

FIG. 3 is a plan sectional view showing a step in an embodiment of a method of constructing the vibration-proof structure.

FIG. 4 is a schematic cross-sectional view showing a conventional example.

[Explanation of symbols]

 1 Building 1'Underground wall 2 Vibration isolation material 3 Earth retaining wall 7 Anti-vibration material 8 Separator 9 Formwork

Claims (2)

(57) [Claims] 1. A vibration isolator such as a styrofoam plate is interposed between an earth retaining wall provided underground and an underground wall of a concrete structure, and the interior of the vibration isolating member and the underground wall are used as the earth retaining wall. An underground wall anti-vibration structure for a building, wherein a separator having one end attached thereto penetrates, and a vibration isolator is provided over the entire length of the outer surface of the separator. 2. A step of fixing one end of a separator having an antivibration material provided on the outer surface over the entire length to an earth retaining wall provided underground, and along the surface of the earth retaining wall to which the separator is fixed. A step of providing a vibration isolator to penetrate the separator into the vibration isolator, and a step of holding a mold at the other end of the separator at a predetermined distance from the vibration isolator,
Characterized by including a step of placing concrete between the vibration isolator and the formwork to construct an underground wall of a building, and a step of removing the formwork after the concrete hardens. Construction method of anti-vibration structure for underground wall of building.