JP2009013608A - Wall structure and construction method for it - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wall structure facilitating construction and having stable strength, and a construction method for it. <P>SOLUTION: A plurality of wall members 1 each consisting of a pile material 2 and a panel material 3 are obliquely buried under the ground from the ground surface to form a continuous wall W. The ground on the front side of the continuous wall is removed to expose the panel material 3 on the inclined front 22 side of the continuous wall W, and thereby the wall structure 100 is easily constructed. The advantage is that in constructing the wall structure 100, earth remaining work for temporarily constructing an earth retaining wall so as not to cause collapse of a wall surface to be excavated, is not needed. The dead load of the panel material 3 fitted to the inclined front 22 side of the pile material 2 acts as pressing force for pressing an inclined back 21 of the pile material 2 to the ground, so that the strength of the wall structure 100 is improved to achieve the wall structure 100 having rigidity to cover the inclined surface of the ground with stable strength. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a wall structure and a construction method thereof.

  Conventionally, as a revetment construction method, the river is temporarily cut off, the slope is leveled, concrete blocks are piled on the slope or concrete is put on the ground to build a revetment structure, and then the river's temporary cutoff is released. The construction method is known.

In addition, while excavating the ground by inserting an excavator obliquely along the slope of the river from the ground surface, soil cement is applied to the inside of the excavation groove in the shape of a wall, and precast concrete is placed in soft soil cement. An underground structure building method for forming a continuous wall in the ground by continuously constructing members is known (for example, see Patent Document 1).
JP 2000-104248 A

  However, in the case of the above conventional revetment construction method, it is necessary to temporarily cut off the river, so it is difficult to perform the construction in the flooding period, and the construction time is limited during the drought period, There was a problem that work processes such as earth retaining work and water change work were complicated.

  Moreover, in the case of the above-mentioned patent document 1, in order to form a continuous wall, which is an underground structure, at a position close to the current river, when the vicinity of the riverbed of the river is excavated, depending on the soil soil, When it comes out, the excavation groove may become brittle and collapse, and there is a problem that a stable continuous wall may not be formed.

  An object of the present invention is to provide a wall structure that is easy to construct and has a stable strength, and a construction method thereof.

In order to solve the above problems, the invention described in claim 1 is a wall structure (100), for example, as shown in FIGS.
A pile material (2) which is buried in an inclined state and whose inclined back surface (21) side covers the ground;
A panel material (3) covering the inclined front surface (22) side of the pile material and pressing the inclined back surface of the pile material toward the ground is formed in a wall shape in a continuous manner. To do.

  According to the invention described in claim 1, the wall structure is formed in a wall surface shape in which the pile material and the panel material covering the front side of the pile material are connected to each other and inclined in the ground. Because it is buried, the weight of the pile material resists earth pressure acting on the back of the pile. In addition, the earth pressure from the ground acting on the inclined back side of the pile material in the wall structure is a relatively small pressure, and the rigidity of the pile material is reduced compared to the pile material used for vertical straight walls, etc. Is possible.

The invention according to claim 2 is the wall structure according to claim 1, for example, as shown in FIG.
The said panel material is the upper end side of the said pile material, Comprising: The range which the said pile material is not embedded in the ground is covered, It is characterized by the above-mentioned.

  According to invention of Claim 2, in a wall structure, since a panel material covers the range which is the upper end side of a pile material and at least a pile material is not embed | buried in the ground, the panel material is used as a decorative panel It becomes possible to cover the surface of the wall structure and to add decorativeness to the wall structure or to add the functionality of the panel material to the wall structure.

Invention of Claim 3 is the wall structure (103) of Claim 1 or 2, Comprising: As shown, for example in FIG. 7, FIG.
The panel material (33) has a through hole (33a) along a direction in which the pile material is buried in the ground.

  According to invention of Claim 3, since the through-hole along the direction by which a pile material is embed | buried in the ground is formed in the panel material which comprises a wall structure, for example, water jet is used. In combination, it acts as a soil outlet when the panel material is buried in the ground, facilitating the embedding.

Invention of Claim 4 is a wall structure as described in any one of Claims 1-3, Comprising: As shown in FIG.1, FIG.3, FIG.6, FIG.
The panel material is provided integrally with the pile material.

  According to invention of Claim 4, since the panel material which comprises a wall structure is integrally provided in the pile material, the effort of installation can be saved.

The invention according to claim 5 is a construction method of a wall structure, for example, as shown in FIGS.
A plurality of pile members (1, 31) are buried obliquely from the ground surface into the ground, the pile members form a continuous wall (W) that is continuous in the ground, and then the ground on the front side of the continuous wall is removed. The wall structure (100, 103) is constructed by exposing the inclined front side of the continuous wall.

According to the invention of claim 5, the ground on the front side of the continuous wall formed by obliquely burying a plurality of pile materials in the ground from the ground surface is removed, the inclined front side of the continuous wall is exposed, and the wall Since a structure can be constructed, there is an advantage that, when constructing this wall structure, there is no need for earth retaining work for temporarily installing a retaining wall so that the wall surface to be excavated does not collapse. Specifically, a continuous wall formed by burying multiple pile materials in the ground has a function as a retaining wall, and by removing a natural ground on the inclined front side of the continuous wall, Since the continuous wall becomes a wall structure, there is no need to remove the temporary retaining wall.
Therefore, the construction method for constructing this wall structure has the merit that the construction period can be greatly shortened and the construction cost can be reduced compared with the case where the retaining wall is temporarily constructed, and the wall structure is constructed and constructed easily. Make it possible.

According to the present invention, the wall structure is formed into a wall surface by connecting pile materials embedded in an inclined state in the ground, and the inclined back side of the pile material constituting the wall structure is Since the ground is covered, the earth pressure from the ground acting on the inclined back side of the pile material in the wall structure is a relatively small pressure, compared to the pile material used for vertical straight walls, etc. It becomes possible to reduce the strength of the pile material.
In other words, since the earth pressure acting from the inclined surface of the ground is relatively small on the wall structure that can be constructed by easy construction of embedding the pile material in an inclined state, the piles that make up the wall structure It is possible to reduce the strength of the material. In other words, the apparent strength of a wall structure constructed using a common pile material such as a pile material having strength for a straight wall that has been used in the past, covers the sloped ground surface from the strength of the straight wall. The wall structure can be improved relatively and can cover the inclined surface with a stable strength.

  Hereinafter, the wall structure of the embodiment of the present invention and the construction method of the wall structure will be described with reference to the drawings.

The wall structure 100 is configured by connecting a plurality of wall members 1 shown in FIG.
The wall member 1 includes a pile material 2 and a panel material 3 attached to the pile material 2 as shown in FIGS.

As shown in FIGS. 1A and 1B, the pile material 2 is, for example, a hat-shaped steel sheet pile, and joints 2b are provided on both sides of the sheet pile main body 2a.
As shown in FIGS. 1A and 1B, the panel material 3 is, for example, a concrete decorative panel provided integrally with the recess of the sheet pile main body 2a, and is fixed to the upper end side of the pile material 2. Yes. As shown in FIG. 2, when the wall member 1 is constructed as a wall structure 100, the panel material 3 is formed of the pile material 2 so as to cover at least a range in which the pile material 2 is not embedded in the ground. It is arranged on the upper end side. And the panel material 3 comprises a part of wall member 1 so that it may be distribute | arranged to the front surface of the wall structure 100. FIG.

As shown in FIGS. 2 and 3, when the wall member 1 composed of the pile material 2 and the panel material 3 is embedded in the ground in an inclined state at a revetment as a construction site, the pile material 2 A wall structure in which a plurality of wall members 1 are connected via a joint 2b and the wall members 1 are juxtaposed so that the pile material 2 and the panel material 3 are connected to each other to form a wall surface. 100 is constructed.
And the inclined back surface 21 side of the pile material 2 in the wall member 1 embedded in the state inclined in the ground covers the ground, and the inclined front surface 22 side of the pile material 2 is covered with the panel material 3. It is like that. Moreover, this panel material 3 is made to act on the pressing force which presses the inclined back surface 21 of the pile material 2 toward the ground by its own weight.

The earth pressure from the ground acting on the inclined back surface 21 side of the pile material 2 in the wall structure 100 constructed by obliquely embedding the wall member 1 in the ground is a straight wall in which the pile material is buried substantially vertically. Therefore, it is possible to reduce the rigidity of the pile material 2 constituting the inclined wall structure 100 from that of the straight wall, and the pile material constituting the retaining wall of the straight wall. When the same strength is applied to the pile material 2 that is inclined, the rigidity of the wall structure 100 can be improved.
Moreover, since the weight of the concrete panel material 3 covering the inclined front surface 22 side of the pile member 2 in the wall member 1 acts from the inclined rear surface 21 side of the pile member 2 toward the ground, it resists earth pressure. By utilizing the weight of the panel material 3, it is possible to reduce the rigidity of the pile material 2 or improve the rigidity of the wall structure 100.

  Next, the construction method of the wall structure 100 using the wall member 1 will be described.

For example, when the wall structure 100 according to the present invention is constructed on the revetment in the revetment construction that widens the river width of the current river (old river) shown in FIG. 4 (a) and reinforces the riverbank, FIG. 4 (b) As shown in FIG. 2, the wall member 1 is buried obliquely at a predetermined angle from the ground surface into the ground at a predetermined position that is a revetment construction site.
And when embedding the several wall member 1 continuously, the wall member 1 is connected via the coupling 2b of the pile material 2, the several wall member 1 is arranged in parallel, and several wall member in the ground A continuous wall W in which 1 is continuous is formed.

Here, as a method of burying the wall member 1 in the ground, for example, the wall member 1 is supported by a large pile driving machine equipped with a crane or the like in an arrangement with a predetermined angle at the construction location, and then the wall By press-fitting the member 1 into the ground, the wall member 1 can be embedded in a state inclined at a predetermined angle.
Then, the continuous wall W can be formed by repeatedly embedding the wall member 1.
Further, as described above, after several wall members 1 are buried in the ground in an inclined state, they are installed at the upper end of the existing pile, and the reaction force is taken from the existing pile, You may make it form the continuous wall W by burying the several wall member 1 using the well-known pile press-fit apparatus which press-fits the pile to install.

And after forming the continuous wall W in the range equivalent to the wall structure 100 to be constructed, it is the ground on the front side of the continuous wall W, and power is applied to the ground and soil on the panel material 3 side of the wall member 1. By excavating and removing with an excavator or the like and exposing the panel material 3 of the wall member 1 on the inclined front side of the pile material 2, a wall structure 100 can be constructed as shown in FIG. .
Then, as shown in FIG. 4C, the bank protection is completed by laying a fence or a promenade along the river bank.

As described above, the wall structure 100 according to the present invention includes the wall member 1 composed of the pile material 2 and the panel material 3 embedded in a slanted state in the ground, and a plurality of continuous wall members 1. Since the inclined back surface 21 of the first pile material 2 covers the ground, the earth pressure from the ground acting on the inclined back surface 21 side of the pile material 2 in the wall structure 100 is relatively small. The rigidity of the pile material 2 of the wall member 1 can be reduced as compared with the pile material used for the retaining wall of the wall.
In particular, since the weight of the panel material 3 attached to the inclined front surface 22 side of the pile member 2 of the wall member 1 acts as a pressing force for pressing the inclined rear surface 21 of the pile member 2 toward the ground, the panel. By utilizing the weight of the material 3, the rigidity of the pile material 2 can be further reduced.
That is, when building the wall structure 100 having a predetermined strength, the individual pile members 2 constituting the wall structure 100 are constructed by adopting a construction method in which the wall member 1 is embedded in the ground in an inclined posture. The rigidity of can be reduced.

  In addition, since the earth pressure acting from the inclined surface of the ground on the wall structure 100 in which the wall member 1 embedded in the ground in an inclined posture is connected is relatively small, it is not possible to use the direct pressure as in the past. By using the pile material 2 having strength for walls, the strength of the wall structure 100 can be improved, and the wall structure 100 having rigidity that covers the inclined surface with stable strength can be obtained.

Further, in constructing the wall structure 100, there is an advantage that the earth retaining work for temporarily installing the retaining wall is unnecessary so that the wall surface to be excavated does not collapse.
That is, the continuous wall W formed by embedding a plurality of wall members 1 in the ground has a function as a retaining wall, and by removing a natural ground on the inclined front side of the continuous wall W, Since the continuous wall W becomes the wall structure 100, it is not necessary to remove the temporary retaining wall.
Therefore, the construction method for constructing the wall structure 100 has an advantage that the construction period can be greatly shortened and the construction cost can be reduced as compared with the case where the retaining wall is temporarily installed. Make it possible to build.

  Thus, the wall structure 100 constructed by continuously connecting the wall member 1 composed of the pile material 2 and the panel material 3 in an inclined posture is easy to construct, and the soil from the inclined surface (the ground). It has the advantage of having a stable strength against pressure.

In addition, in the construction method for constructing the wall structure 100 according to the present invention, the earth retaining work for temporarily installing the retaining wall is unnecessary. For example, as shown in FIG. 5, the old river and the wall structure 100 are constructed. Even if there is no natural ground between them and there is no place to temporarily install the retaining wall, the wall structure 100 can be constructed on the revetment.
In this case, since the straight wall on the riverbank of the old river and the wall structure 100 serving as the revetment of the new river intersect, in order to make the function of the continuous wall W as a retaining wall sufficient, It is preferable to use a long pile at the lower end side of the pile material 2 and to increase the rooting length.

The present invention is not limited to the above embodiment.
Although the pile material 2 of the wall member 1 which comprises the above-mentioned wall structure 100 was based on the hat-shaped steel sheet pile, for example, as shown in FIG. 6, the pile material based on the steel pipe pile 12 is used, and the wall member 101 in which one surface (front surface) of the pile member 12 is covered with the panel member 13 is used, and the wall structure 101 formed by connecting the wall members 11 is constructed. May be.

(Embodiment 2)
Next, a second embodiment of the wall structure and the construction method of the wall structure according to the present invention will be described.
In addition, the same code | symbol is attached | subjected to the same part as Embodiment 1, and only a different part is demonstrated.

As shown in FIGS. 7 and 8, the wall member 31 includes a pile member 32 based on a steel sheet pile, and a panel member 33 fixed to the recess of the sheet pile body 32 a of the pile member 32.
On the front side of the sheet pile main body 32 a of the pile material 32, a support protrusion 32 c that supports the panel material 33 so as not to be displaced from the pile material 32 is provided.
The panel material 33 is formed with a through-hole 33a along the direction in which the pile material 32 is embedded in the ground.
The wall member 31 is connectable in the longitudinal direction, and several wall members 31 are connected in accordance with the height of the inclined surface for constructing the wall structure 103 and the desired length. You can adjust it.

  Next, a construction method of the wall structure 103 using the wall member 31 will be described. In the second embodiment, an example in which the wall structure 103 is constructed by connecting the three wall members 31 in the vertical direction will be described.

First, as shown to Fig.8 (a), the 1st wall member 31 is embed | buried diagonally at a predetermined angle from the ground surface in the predetermined position used as the construction location of a revetment.
And when this wall member 31 is embed | buried in the ground, water is sent from the through-hole 33a of the panel material 33 with a water jet, and mud-like soil is pumped out by the vacuum, and underground of the wall member 31 is carried out. By assisting the press-fitting into the wall member, it is possible to suitably embed the wall member 31 as a retaining wall.
Moreover, the cross-sectional area of the panel material 33 perpendicular | vertical to the press-fit direction of the wall member 31 (pile material 32) is reduced by the through-hole 33a formed in the panel material 33, and the panel material 33 becomes the pile material 32. At the same time, since the resistance acting on the panel member 33 when being pressed into the ground is reduced, the wall member 31 as the retaining wall can be buried more suitably.
In addition, the lower end side of the pile material 32 of the 1st wall member 31 embed | buried toward the ground initially is formed long as a rooting part.

Next, as shown in FIG. 8B, the second wall member 31 is connected to the upper end of the first wall member 31, and the first wall member 31 is pushed in by the second wall member 31. The first wall member 31 and the second wall member 31 are buried obliquely at a predetermined angle in the ground.
Similarly, water is fed from the through hole 33a of the panel member 33 with a water jet, and the muddy soil is pumped out by vacuum to assist the press-fitting of the wall member 31.

Further, as shown in FIG. 8C, the third wall member 31 is connected to the upper end of the second wall member 31, and the second and first wall members 31 are connected by the third wall member 31. The first wall member 31, the second wall member 31, and the third wall member 31 are buried obliquely at a predetermined angle in the ground so as to be pushed in. Similarly, water is fed from the through hole 33a of the panel member 33 with a water jet, and the muddy soil is pumped out by vacuum to assist the press-fitting of the wall member 31.
When the first to third wall members 31 are continuously arranged and buried, the wall members 31 are connected in the lateral direction via the joints 32b of the pile members 32, and the plurality of wall members 31 are arranged in parallel. And the continuous wall W in which the several wall member 31 continues in the ground is formed.

  And as shown in FIG.8 (d), the wall material which makes the 1st-3rd wall member 31 one set is arranged in multiple numbers in the horizontal direction, and it is in the range equivalent to the wall structure 103 to be constructed. After the continuous wall W is formed, the ground on the front side of the continuous wall W is excavated and removed by a power shovel or the like on the panel member 33 side of the wall member 31, and the inclined front surface of the pile member 32 is removed. By exposing the panel member 33 of the wall member 31 on the side, a wall structure 103 can be constructed as shown in FIG.

  As described above, the wall structure 103 constructed by connecting the wall members 31 as the retaining walls made of the pile material 32 and the panel material 33 in the vertical direction and connecting them in the horizontal direction is also used for earth retaining work. The wall structure 103 thus constructed functions as a revetment having a stable strength.

  In the above embodiment, the pile material and the panel material in the wall member are integrally fixed, and the pile material and the panel material are integrally buried in the ground. For example, the pile material and the panel material are detachable, and the panel material is attached to the pile material before being buried in the ground, or the pile is buried while being buried in the ground. A panel material may be attached to the material, or the panel material may be attached to the pile material after being buried in the ground.

  In the above embodiment, the case where the wall structure is constructed as a river revetment has been described as an example. However, the present invention is not limited to this, and the wall structure is supported by an inclined surface. The construction location and use are arbitrary, such as constructing as a wall.

  Further, the number of wall members connected or continuously provided is arbitrary, and it is needless to say that other specific detailed structures can be appropriately changed.

They are a side view (a) which shows a wall member, and sectional drawing in the bb line of Fig.1 (a). It is explanatory drawing which shows the wall structure which concerns on this invention. It is sectional drawing in the III-III line in FIG. It is explanatory drawing which shows the construction method of a wall structure, the old river (a) which builds a wall structure, the continuous wall (b) formed with respect to the old river, and the wall constructed in the revetment of a new river The structure (c) is shown. It is explanatory drawing which shows the continuous wall formed in the position without a natural mountain with respect to an old river. It is explanatory drawing which shows the wall structure comprised by the wall member of a steel pipe pile type. It is explanatory drawing which shows the wall member (wall structure) in Embodiment 2 of this invention. It is explanatory drawing which shows the construction method of the wall structure in Embodiment 2 of this invention, and is embedded (a) of the 1st wall member, (b) of the 2nd wall member, and is embedded of the 3rd wall member ( c), continuous wall formation (d), wall construction (e).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Wall member 2 Pile material 21 Inclined back surface 22 Inclined front surface 2a Sheet pile main body 2b Joint 3 Panel material 100 Wall structure 11 Wall member 12 Pile material 13 Panel material 101 Wall structure 31 Wall member 32 Pile material 33 Panel material 33a Through-hole 103 Wall structure W Continuous wall

Claims (5)

Pile material that is buried in an inclined state in the ground, and the inclined back side covers the ground,
A wall structure characterized in that a panel material that covers the inclined front side of the pile material and presses the inclined rear surface of the pile material toward the ground is formed in a wall shape.   2. The wall structure according to claim 1, wherein the panel material is on an upper end side of the pile material and covers at least a range in which the pile material is not embedded in the ground.   The wall structure according to claim 1 or 2, wherein the panel material has a through hole along a direction in which the pile material is buried in the ground.   The said panel material is integrally provided in the said pile material, The wall structure as described in any one of Claims 1-3 characterized by the above-mentioned. A plurality of pile members are buried obliquely in the ground from the ground surface, and the pile members form a continuous wall in the ground, and then the ground on the front side of the continuous wall is removed, and the inclined front side of the continuous wall A method for constructing a wall structure, comprising exposing a wall to construct a wall structure.

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