JPH054497B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method of constructing a vibration isolation wall for isolating vibrations propagating underground.

[Prior Art] Conventionally, the following methods have been used to prevent buildings on the ground from being affected by vibrations caused by industrial machinery or traffic such as roads.

(1) Install steel sheet piles or concrete walls underground.

(2) Dig an empty trench underground.

(3) Construct two layers of steel sheet piles or concrete walls underground, spaced apart.

(4) Driving steel sheet piles into the ground in double layers at intervals, and inserting Styrofoam, etc. between the steel sheet piles.

[Problems to be Solved by the Invention] However, the above-mentioned conventional methods (1) to (4) have the following problems.

Method (1) is simple, but has a small vibration isolation effect.

Method (2) has a great effect of blocking vibrations propagating underground, but it requires digging deep underground to prevent diffracted waves. In order to attenuate the amplitude of the vibration wave by half with a groove, it is necessary to dig a groove with a depth of at least 1/4 of the wavelength of the vibration wave, which requires a depth of 5 to 10 meters. Therefore, it is difficult to prevent wall collapse for a long period of time.

Method (3) poses problems with vibration and noise during pouring when using steel sheet piles. Moreover, in order to maintain the space between the steel sheet piles, each steel sheet pile must be made to stand on its own, and for this reason, it is necessary to drive the steel sheet piles deeper than the required depth. Furthermore, when driving steel sheet piles,
There is a risk of damaging underground objects, and construction cannot be carried out in narrow spaces where pouring machines cannot be brought in.
On the other hand, in the case of concrete walls, although some of the problems associated with steel sheet piles can be solved, there are problems in terms of construction cost and time.

Method (4) is an improvement over method (3), but the problems of method (3) remain.

Therefore, the object of the present invention is to provide a structure that has a large vibration isolation effect, can be constructed even in a narrow space without generating noise, and is free from the risk of damaging underground objects during construction. A method of constructing a barrier wall is provided.

[Means for Solving the Problems] When digging a trench underground, the trench is dug to a predetermined depth while the excavated surface is protected by a liner plate, and the liners facing each other at an interval are The feature is that a vibration isolation wall made up of plates is constructed underground.

Next, one embodiment of the method for constructing a vibration isolation wall according to the present invention will be described with reference to the drawings.

1 to 3 are process diagrams showing one embodiment of the method for constructing a vibration isolation wall according to the present invention.

First, as shown in FIG. 1, a groove 1 of a predetermined width is dug, and a liner plate 2 as shown in FIG. 5 is constructed on the wall surface of the groove 1.

Next, after digging the trench 1 to a certain depth in this way, reinforcing material 3 such as H-shaped steel is placed from the ground.
is suspended vertically inside the liner plate 1 via a hanging rod 4. The existing liner plate 2 is also suspended via the hanging rod 4. Opposing reinforcing material 3
are connected in parallel by a support material 5 that has a vibration-proofing function and is made of, for example, laminated urethane and can withstand earth pressure. This prevents the wall from collapsing.

Next, the trench 1 is further dug and, as shown in FIG. 3, a new reinforcing material 3A is connected to the lower end of the existing reinforcing material 3 by a connecting plate 6, as shown in FIG. . In this way, all existing reinforcements 3
Connect new reinforcing material 3A to. Note that the newly installed liner plate 2A is bolted to the existing liner plate 2 before connecting the reinforcing member 3.

By repeating the above operations, the liner plates 1 are connected to the wall surface in a staggered manner to construct a vibration isolation wall. Note that, if necessary, a vibration isolating material such as styrofoam or urethane may be inserted between the liner plates 1.

[Effects of the Invention] As explained above, according to the present invention, by constructing the liner plate in two layers, the vibration isolating effect is large, and a large machine is not required during construction, so that it can be installed in a narrow space. Can be built in any convenient location,
Moreover, during construction, various useful effects are brought about, such as no noise and no risk of damaging underground objects.

[Brief explanation of the drawing]

1 to 3 are process diagrams showing one embodiment of the method for constructing a vibration isolation wall according to the present invention, FIG. 4 is a perspective view showing a state in which reinforcing members are connected in the same method, and FIG. FIG. 2 is a partial perspective view of the liner plate. In the drawings: 1...Groove, 2...Liner plate, 3...Reinforcement material, 4...Hanging rod, 5...Support material, 6...Connection plate.

Claims (1)

[Claims] 1. When digging a trench in the ground, the trench is dug to a predetermined depth while protecting the excavated surface with a liner plate, and thus a vibration isolation wall constituted by the liner plates facing each other with an interval is formed. A method of constructing a vibration isolation wall characterized by constructing it underground.