JP3908757B2 - Vibration isolation wall structure - Google Patents

Description

  The present invention relates to a structure of a vibration isolation wall that is installed in a general ground or a narrow area such as under a viaduct, and that blocks vibration with a train, automobile, machine foundation, or the like as an epicenter.

  2. Description of the Related Art Conventionally, there has been known a structure of a vibration isolation wall mainly composed of a plate-shaped member such as a steel sheet pile or a concrete wall. Vibration isolation walls using steel sheet piles and concrete walls are strong and safe due to the nature of their materials, but the vibration isolation effect is not sufficient (see, for example, Patent Document 1). In addition, vibration isolation air grooves defined by steel sheet piles that are press-fitted so as to oppose each other have a higher vibration isolation effect than those without such air grooves, but there are issues with safety and earthquake resistance. Was left.

  Therefore, in order to solve the problems of these conventional vibration isolation walls, there is a structure of the vibration isolation wall in which vibration isolation members created by connecting a plurality of tubes (cushion bodies) filled with gas are embedded in the ground. Are known.

According to the structure of the vibration isolating wall, the vibration isolating performance is high, but a large-sized construction machine such as a clam shell is previously drilled into a vertical hole having a depth determined by the number of the vibration isolating members. A vibration isolation member with a concrete weight attached to the hole is buried and fixed.
Japanese Patent Publication No. 2001-226998

  However, the construction method using the cushion body requires a large construction machine for excavating a vertical hole having a necessary depth in advance, and it is difficult to perform construction in a low altitude place such as a narrow space. was there. In addition, no measures were taken to prevent the original ground from being displaced during and after the completion of the construction. Further, it is necessary to attach a weight for preventing the cushion body from rising due to the buoyancy generated in the cushion body at the lower end in the insertion direction of the cushion body, and there is a problem that the structure of the vibration blocking wall becomes complicated.

  An object of the present invention is to provide a structure of a vibration isolation wall that can be installed in a general land and a narrow space while solving the above-mentioned problems, and has a higher vibration isolation performance than the conventional one and has safety. To do.

In order to solve the above-mentioned object, the structure of the vibration isolation wall according to the present invention includes a retaining wall formed by a press-fitting material press-fitted into an excavated original ground, the excavated original ground, and the earth retaining A soiled portion formed between the wall, a vibration isolation member inserted in the soiled portion, a first support member attached along a longitudinal direction of the vibration isolation member, and the first support member curable material which is cured with provided perpendicularly, and a second support member provided on the insertion side leading end of the vibration isolation member, is composed of, after the soil section is a lapse of a predetermined time for The soiled portion forms a continuous wall after curing, and is provided at an end opposite to the insertion direction of the first support member to prevent the inserted vibration isolating member from rising . 3 at least before the support member Until the continuous wall is formed, characterized in that so as to connecting the first supporting member and the soil retaining wall.

  According to the structure of the vibration isolating wall of the present invention, the vibration isolating wall has a three-layer structure including a retaining wall, a vibration isolating member filled with gas, and a curable continuous wall containing the vibration isolating member. According to such a structure, sufficient strength is secured by the curable continuous wall, and the vibration isolating member filled with gas is disposed inside the continuous wall. A vibration isolation wall having safety and high vibration isolation performance can be obtained. In addition, since the original ground is made into a soil using a curable solution and the vibration isolating member is press-fitted, a lifting-preventing weight is not required. Furthermore, since the earth retaining wall is formed, deformation of the original ground can be prevented.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is an explanatory view showing a vibration isolation wall in the middle of construction. Specifically, the vibration isolation wall according to the present invention is formed by press-fitting a press-fitting material 3 made of a steel sheet pile or the like into a cloth excavation part T excavated in advance by a construction machine having a press-fitting material press-fitting and drawing device (not shown). A soil retaining wall (partition plate) W that divides the ground and a construction machine equipped with a multi-axis oscillating spray device, which will be described later, are soiled (fluidized) between the soil retaining wall W and the cloth moat T. The vibration isolating member 5 inserted into the soiled portion S formed in this manner, and the anti-lifting metal fittings 10 and 10A for preventing the vibration isolating member 5 from floating due to buoyancy until the soil forming portion S is cured. Consists of

  When starting construction, the base ground is excavated by a predetermined width D to provide the cloth moat T, and the width D of the cloth moat T is sufficient with a smaller excavation amount than before.

  FIG. 2 is a view showing the multi-axis oscillating injection device 200 in a state where the vibration isolation member 5 constituting the main part of the vibration isolation wall is attached.

  The multi-axis oscillating spray device 200 is a device for forming the soil forming portion S and inserting the vibration isolating member 5 and is detachably fixed to a main body of a construction machine (not shown). When the earth retaining wall W is formed on the main body of the construction machine (not shown), a press-fitting material press-fitting and drawing device (not shown) is attached, and the earth retaining wall W is formed by the press-fitting material press-fitting and drawing device. After the earth retaining wall W is formed, the multi-axis oscillating spray device 200 shown in FIG. 2 is attached to the main body of the construction machine, and each construction process described later is performed. In this way, by attaching an attachment (for example, a press-fitting material press-fitting / pulling-out device, a multi-axis oscillating jet device 200, etc.) that matches the purpose to the main body of the same construction machine, Can be constructed economically.

  As shown in FIG. 2, the multi-axis oscillating injection device 200 is attached to the main-axis oscillating injection device main body 20 and the elevating means composed of hydraulic pressure, a chain 30 and the like so as to be movable up and down. A pair of multi-axis oscillating shafts 27 and 27 is generally configured. The tip of the multi-axis swing shaft 27 is provided with an injection port 21 for injecting, for example, a solution for forming a soil for making the original ground into a soil at a high pressure. The injection port 21 can inject the solution for soiling around AR3 and AR4 around the multi-axis swing shaft 27 (see FIG. 3).

  As shown in FIG. 3, since the injection port 21 is provided at a position opposite to the substantially diagonal line, the base ground and the solution for soiling can be mixed efficiently. Moreover, since the connection part 28 and the injection port 21 are raised / lowered together by raising / lowering of the chain 30, a vertical hole can be provided gradually to a predetermined depth while making the original ground into a soil.

  Further, the pair of multi-axis oscillating shafts 27 and 27 are slidably held by a cylindrical holding portion 25, and the pair of holding portions 25 and 25 are connected and reinforced by a connecting portion 26.

  Referring to FIG. 2, the vibration isolating member 5 includes a columnar first support member 82 that supports the longitudinal direction of the vibration isolating member 5, and a bottom portion of the vibration isolating member 5 that is connected to the first support member 82. Is attached to the connecting portion 26 of the multi-axis oscillating spray device 200 by the second support member 81 that supports the shaft. Specifically, the engagement portion 82a provided at the upper end of the first support member 82 and having a diameter smaller than that of the first support member 81 is attached to the connecting portion 26 of the multi-axis swing injection device 200 so as to be movable up and down. It is fixed to a chuck 29 attached to one end of an elevating member 83 inserted through the portion 24. Moreover, the below-mentioned levitation prevention metal fitting 10 is also attached to this engaging part 82a.

  Further, as shown in FIG. 4A, the support members 81 and 82 are formed in a substantially T shape, and a reinforcing member 81 b is provided at a joint portion between the first support member 82 and the second support member 81. . Further, the bent portions 81a at both ends of the second support member 81 are provided with through holes 81c through which a lower hook 90 described later is inserted.

  The vibration isolating member 5 can be moved up and down independently of the lifting and lowering of the multi-axis swing shaft 27 of the multi-axis swing injection device 200 by the lifting means including the chain 30 and a hydraulic device (not shown). It is also possible to move up and down with the same amount of movement in parallel with the multi-axis oscillating spray shaft 27. Due to such a structure, in the process of lowering the multi-axis oscillating injection device 200, the soil formation is performed while the soil is grounded by high-pressure injection of the soiling solution from the injection port 21 of the multi-axis oscillating injection shaft 27. The vibration isolating member 5 supported by the support members 81 and 82 can be inserted into the part S.

  In the present embodiment, the vibration isolation member 5 is formed by connecting a plurality of cushion bodies filled with gas inside the flexible container. When the flexible vibration blocking member 5 is wound around the lower hook 90, the vibration blocking member 5 is attached to the support members 81 and 82.

  FIG. 5 is an explanatory view showing a process of installing the vibration isolation wall according to the present invention.

  As shown to Fig.5 (a), the press-fitting material (steel sheet pile) 3 is press-fitted in a predetermined location using the construction machine which is not shown in figure, and the earth retaining wall W is formed. A first soil forming part S1 is formed between the earth retaining wall W and the excavated raw ground by using the multi-axis swing injection device 200 with the vibration isolating member 5 attached (FIG. 5 (b)). . In addition, the dotted line in FIG.5 (b) shows the area | region made into a soil. In this embodiment, a steel sheet pile is used as the press-fitting material, but a concrete plate or the like may be used.

  Next, the vibration isolating member 5 is inserted into the soil forming part S1 (FIG. 5C).

  Next, the construction machine (not shown) is moved and soiling is performed as many times as necessary (FIG. 5D shows a state in which the second soiling part S2 is formed).

  When a plurality of vibration blocking members 5 are inserted, adjacent vibration blocking members 5 are arranged so as to overlap each other in order to prevent vibration from propagating between the respective vibration blocking members 5 (FIG. 5 ( e)). The length X of the overlap portion O may be adjusted as appropriate. Further, as shown in FIG. 5C and the like, the vibration blocking member 5 is inserted with a predetermined angle with respect to the earth retaining wall W.

  Next, the anti-lifting metal fitting 10 is attached to the engaging portion 82a of the first support member 82 that supports the inserted vibration isolating member 5 (FIG. 5E). As shown in FIG. 4B, the levitation preventing metal fitting 10 has a pair of arms 10A that are appropriately fixed to the connecting portion 82a of the support member 82 by screws or the like (not shown) and that press the upper portion of the vibration isolating member 5. is doing. The arm 10A is in contact with the upper end surface of the vibration isolating member 5, and the end of the arm 10A is welded to the earth retaining wall W by the welded portion 100 as shown in FIG. Is prevented from rising. That is, the levitation preventing metal fitting 10 and the arm 10A function as a third support member.

  As a method for fixing the anti-lifting metal fitting 10 to the earth retaining wall W, a pair of arms 10A is provided so as to be rotatable with respect to the anti-lifting metal fitting 10, and an engaging portion is provided at the tip of the arm 10A. The engaging wall and the detachable engaged portion may be provided on the earth retaining wall W. Further, a connecting portion for preventing the pair of arms 10A and 10A from rotating is provided until the soil forming portion S is cured, and the connecting portion is fixed to each arm 10A with a pin or the like, If the engaged portion is connected with a pin or the like, the vibration blocking member 5 can be prevented from rising more reliably.

  The support members 81 and 82 do not serve as weights in the conventional structure. Therefore, in the present invention, the anti-vibration members 10 and 10A are used to prevent the vibration blocking member 5 from floating. In other words, the fact that the support members 81 and 82 hardly function as a weight means that the support members 81 and 82 are lighter than a concrete weight in the conventional structure. For this reason, it is better to use the relatively lightweight support members 81 and 82 in terms of workability.

  Finally, when the soil forming part S (S1, S2) is cured and the continuous wall C is formed, the anti-lifting metal fitting 10 and the arm 10A are removed and the construction is completed (FIG. 5 (f)).

  FIG. 6 is a perspective view showing a state after the completion of construction. As understood from FIG. 6, the soil that has been soiled is hardened to form a continuous wall C, and the vibration isolation member 5 is embedded in the continuous wall C.

  In addition, the earth retaining wall W made of the press-fit material 3 has a role of preventing the deformation of the surrounding ground in addition to the role of supporting the weight of the construction machine described above. It also has high safety. In the present invention, the curability is imparted by adding cement or the like to the solution for soiling for soiling. However, if it is not always necessary to impart curability, water is simply added at high pressure. You may spray. That is, what is necessary is just to determine the composition of the solution for soiling according to the composition of a raw ground.

  In the above-described embodiment, the case where the vibration isolation wall is installed in a narrow area has been described. However, the structure according to the present invention is not limited to the narrow area, and the same safety and vibration isolation performance are provided in a general area. Can be obtained.

  In addition to general land, it is possible to obtain a barrier wall having high strength and vibration isolation performance while ensuring safety even in a confined area such as under an overpass where it is difficult to carry in a large construction machine.

It is explanatory drawing which shows the place which has installed the vibration isolation wall which concerns on this invention. It is a front view of the multi-axis rocking | fluctuation injection apparatus with which the vibration interruption member was attached. FIG. 3 is a partially enlarged view of the multi-axis oscillating spray device shown in FIG. 2. (A) is a perspective view which shows the support member of the vibration isolating member which concerns on this invention, (b) is a perspective view which shows a floating prevention metal fitting. It is a schematic diagram which shows the installation method of the vibration isolation wall which concerns on this invention. It is a perspective view which shows the vibration isolation wall after completion | finish of construction.

Explanation of symbols

3 Press-fitting material 5 Vibration blocking member 10 Lift prevention metal fitting 10A Arm 81 Second support member 81a Bending portion 81c Through hole 82 First support member 82a Engaging portion 90 Lower hook rod 100 Welding portion 200 Multi-axis swing injection device S Soil formation Part C Continuous wall T Nunobori part W Earth retaining wall

Claims (8)

A vibration isolation wall structure,
A retaining wall formed by a press-fitting material press-fitted into the excavated raw ground;
A soiled portion formed between the excavated raw ground and the retaining wall;
A vibration isolating member inserted into the soiled portion;
A first support member attached along the longitudinal direction of the vibration isolation member;
A second support member provided in a direction perpendicular to the first support member, and provided at a distal end on the insertion side of the vibration isolation member ;
The soiled portion is composed of a curable material that cures after a predetermined time has elapsed, the soiled portion forms a continuous wall after curing,
Wherein the insertion direction of the first support member provided at the opposite end, the soil retaining wall to at least the continuous wall is formed by the third support member to which the inserted vibration isolation member can be prevented from floating A structure of a vibration isolating wall, wherein the first support member and the first support member are connected to each other . A structure of the vibration isolation wall according to claim 1, wherein the vibration isolation member, the structure of the vibration isolation walls, wherein a gas is formed inside a hollow member filled. A structure of the vibration isolation wall according to claim 1, wherein the first support member and the second support member, the structure of the vibration isolation wall, wherein the formed outline T-shape. A structure vibration isolation wall according to claim 1, the structure of the vibration isolation wall, characterized in that said soil retaining wall is formed by press-fitting a plurality of press-fitting members. A structure of the vibration isolation wall according to claim 1, wherein the vibration isolation member, the structure of the vibration isolation wall, characterized in that it is installed to be inclined by a desired angle with respect to the earth retaining wall. 6. The structure of a vibration isolating wall according to claim 5, wherein the vibration isolating member is composed of at least two vibration isolating members, and at least a part of the adjacent vibration isolating members are arranged to overlap each other. Characteristic vibration isolation wall structure . 2. The structure of the vibration isolating wall according to claim 1, wherein an engagement portion having a diameter smaller than that of the first support member is provided at an end portion of the first support member, and the third support member is the engagement member. The structure of the vibration isolating wall characterized by being fitted to the joint. A structure of the vibration isolation wall according to claim 1, the structure of the vibration isolating walls the pressed material, characterized in that they are composed of sheet piles.

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