JPWO2010092793A1 - Underground wall structure - Google Patents

Abstract

The underground outer wall structure of the present invention includes a plurality of steel sheet piles that are connected to each other by joint portions provided at the respective side edges and embedded in the ground to divide the ground side and the basement space side; A basement outer wall structure comprising: a pair of steel sheet pile side restraining means provided on the panel; a panel member provided on the basement space side; and a panel side restraining means provided on the panel member; The pair of steel sheet pile side restraining means is connected so as to restrain relative movement in the embedding direction of the steel sheet pile.

Description

The present invention relates to an underground outer wall structure. The present invention particularly relates to an underground outer wall structure including a wall main body made of a steel sheet pile and a panel main body provided on one side surface of the wall main body.
This application claims priority on February 10, 2009 based on Japanese Patent Application No. 2009-028767 for which it applied to Japan, and uses the content for it here.

  Conventionally, reinforced concrete underground outer walls (hereinafter referred to as RC walls) are frequently used as underground outer walls of buildings and the like. As a procedure for constructing such an RC wall, underground excavation is performed using temporary earth retaining by underground continuous walls such as a main pile lateral sheet pile and soil cement wall, and then the RC wall is placed inside the excavated temporary earth retaining. The construction method is generally common. In such a construction method of the underground outer wall, the temporary earth retaining material is not expected as a structure of the underground outer wall and is pulled out or buried after the RC wall is constructed. Therefore, there is an inconvenience that the construction cost increases and the construction period becomes longer.

In order to improve such an inconvenience, a technique has been proposed in which the temporary earth retaining material is used as a structure of the underground outer wall by a composite structure in which the temporary earth retaining material and the RC wall are integrated (for example, Patent Documents). 1 and 2).
In the underground wall structure described in Patent Document 1, a headed stud is attached to a flange of an H-shaped steel, which is a core material embedded in a soil cement wall that is a temporary earth retaining, and this headed stud is embedded in the rear. The H-section steel and the RC wall are connected by constructing the punched RC wall. By connecting the core material of the temporary earth retaining material and the RC wall in this way, the core material and the RC wall integrally resist external forces acting from the outside of the underground outer wall such as earth pressure and water pressure. Can do. That is, the RC wall can be reinforced by the core material, and the core material of the temporary earth retaining material can be used as a part of the structure of the underground outer wall.

  Moreover, the technique of patent document 2 is a technique regarding the composite structure which integrated the steel sheet pile and RC wall which are one of the temporary earth retaining materials. In this composite structure, the RC wall and the steel sheet pile are connected via a perforated steel plate gibber fixed to the steel sheet pile. Thus, by using the steel sheet pile as a structure of the underground outer wall, it is not necessary to pull out the steel sheet pile after the RC wall is constructed. In addition, the number of RC walls can be reduced by the amount of reinforcement by the steel sheet pile. Therefore, it is possible to reduce the construction cost and the construction period.

Japanese Patent No. 3578210 Japanese Patent No. 3614087

In the underground outer wall of the conventional composite structure described in Patent Documents 1 and 2, the core material and steel sheet pile constituting the temporary earth retaining material resist the load acting on the out-of-plane direction as a reinforcing material for the RC wall. However, it cannot resist the in-plane load during an earthquake. For this reason, RC walls are indispensable to resist the in-plane load at the time of an earthquake, and as a conventional underground outer wall structure, an RC wall is constructed after performing underground excavation using temporary earth retaining. Therefore, it cannot be expected that the construction cost will be significantly reduced and the construction period will be shortened.
On the other hand, in order to significantly reduce the cost and the construction period, it is possible to construct the underground outer wall with a steel sheet pile alone without constructing the RC wall in the conventional underground outer wall structure. However, in this case, since the connection part (joint part) between the steel sheet piles is not restrained in the longitudinal direction (vertical direction), the shear force cannot be sufficiently transmitted to the in-plane load at the time of the earthquake. A single underground wall cannot be used as a seismic wall.
Here, as a method of improving the shear strength at the connecting portion of the steel sheet pile, for example, a method of directly welding the connecting portion, a method of welding a round bar in the connecting portion, or the like can be considered. However, in the method of directly welding the connecting portion of the steel sheet pile, the size of the gap portion to be welded differs depending on the fitting state of the connecting portion. Therefore, there is a problem that it is difficult to apply to the construction work because it requires high-level throat thickness management and strength management. Moreover, since the precision of the field welding of the joint part of an adjacent steel sheet pile strongly depends on a welder's technique, quality control is difficult and the safety | security with respect to an earthquake etc. is inadequate.

  The purpose of the present invention is to use a joint restraint means that does not require an RC wall to resist the in-plane load during an earthquake and that allows easy construction and strength management so that an underground outer wall can be constructed with a steel sheet pile alone. An object of the present invention is to provide an underground outer wall structure having a function as a seismic wall and to provide an underground outer wall structure capable of realizing a significant cost reduction.

The present invention employs the following means in order to solve the above-described problems.
(1) One aspect of the present invention is a plurality of steel sheet piles that are connected to each other by joint portions provided at respective side edges and embedded in the ground to partition the ground side and the basement space side; A basement outer wall structure comprising: a pair of steel sheet pile side restraining means provided at straddling positions; a panel member provided on the basement space side; and a panel side restraining means provided on the panel member. The panel side restraining means and the pair of steel sheet pile side restraining means are connected so as to restrain relative movement in the embedding direction of the steel sheet pile.
(2) In the underground wall structure according to (1), the plurality of steel sheet piles include a first flange disposed on the basement space side; and a pair of both ends connected to both side edges of the first flange. And a pair of second flanges extending parallel to the first flange from the leading edge of the pair of webs and disposed on the ground side, and at the leading edge of the pair of second flanges It is a hat-shaped steel sheet pile provided with a pair of the joint portions, and one of the pair of steel sheet pile side restraining means may be provided on the surface of each of the pair of second flanges facing the basement space side.
(3) In the underground wall structure according to (1), the plurality of steel sheet piles include a first flange disposed on the ground side; and a pair of webs continuously provided on both side edges of the first flange. And a pair of second flanges extending in parallel to the first flange from the leading edges of the pair of webs and disposed on the basement space side, and at the leading edges of the pair of second flanges It is a hat-shaped steel sheet pile provided with a pair of the joint portions, and one of the pair of steel sheet pile side restraining means may be provided on a surface facing the basement space side in each of the pair of second flanges.
(4) In the underground wall structure according to (1), the plurality of steel sheet piles include a flange; and a pair of webs that are connected to both side edges of the flange; and tips of the pair of webs It is the 1st U-shaped steel sheet pile and 2nd U-shaped steel sheet pile in which a pair of said joint part is provided in an edge, The said 1st U-shaped steel sheet pile by which the said flange is arrange | positioned at the said ground side, and the said flange Are alternately arranged with the second steel sheet piles arranged on the basement space side, and faces the basement space side in the respective webs of the first U-shaped steel sheet pile and the second U-shaped steel sheet piles. The pair of steel sheet pile side restraining means may be provided.
(5) In the underground wall structure according to any one of (1) to (4), the panel-side restraining means includes a fixed portion fixed to the panel member; and from the fixed portion to the ground side A projecting portion projecting toward the pair, and the projecting portion may be connected to the pair of steel sheet pile side restraining means.
(6) In the underground wall structure according to (5), the pair of steel sheet pile side restraining means includes a plate-like portion protruding from the steel sheet pile toward the basement space side, and the plate-like portion and The protruding portion of the panel side restraining means may be fixed via a fixing tool.
(7) In the underground wall structure according to (6), the fixing tool includes a bolt that penetrates the plate-like portion of the pair of steel sheet pile side restraining means and the protruding portion of the panel side restraining means; A nut that is screwed onto the bolt, and at least one of the plate-like portion and the protruding portion may be provided with a large-diameter hole capable of adjusting the position of the bolt.
(8) In the underground wall structure described in (5) above, the pair of steel sheet pile side restraining means protrude from the steel sheet pile toward the basement space side, and are spaced apart from each other in the embedding direction of the steel sheet pile. A pair of fitting pieces provided so as to do so, and the protruding portion of the panel side restraining means may be inserted between the pair of fitting pieces.
(9) In the underground wall structure according to (8), an inclined surface is formed on the opposing surfaces of the pair of fitting pieces so as to widen toward the basement space side, and the panel side constraint A sliding contact surface capable of sliding contact with the inclined surface of the pair of fitting pieces may be formed at the tip of the protruding portion of the means.
(10) In the underground wall structure according to (5) above, the panel member is fixed to the panel member by a fixing tool that penetrates the panel member from a surface facing the basement space side of the panel member. It may be fixed to.
(11) In the underground wall structure according to any one of (1) to (4), the panel side restraining means includes a reinforcing plate fixed to a surface of the panel member facing the ground side. The pair of steel sheet pile side restraining means may include a pair of fasteners that penetrate the panel member and the reinforcing plate from the surface of the panel member facing the basement space side and are joined to the steel sheet pile. .
(12) In the underground wall structure according to (11), the pair of fixing tools includes a pair of bolts that pass through the panel member and the reinforcing plate; and a bolt that is fixed at a position straddling the joint portion. And a pair of nuts to be screwed together.
(13) The underground wall structure according to any one of (1) to (12) may further include a fixing unit that fixes the panel member to the steel sheet pile.
(14) In the underground wall structure according to any one of (1) to (13), the panel member is a landscape panel member in which a surface facing the basement space functions as a wall finishing material. Also good.

According to the structure as described in said (1)-(5), the relative deformation | transformation of the longitudinal direction (embedding direction of a steel sheet pile) in the joint part of an adjacent steel sheet pile, ie, the shear deformation of steel sheet piles, can be restrained. . Therefore, the wall main body in which a plurality of steel sheet piles are connected can sufficiently resist the in-plane shear force, and the wall main body can function as an earthquake-resistant wall. As a result, it is not necessary to construct a conventional RC wall on the inside (space side) of the wall main body made of steel sheet piles, and it becomes possible to significantly reduce the cost and construction period required to construct the RC wall. .
And by providing the panel side restraint means on the panel member attached later on the inside of the wall body, it is possible to carry out the connection work with the steel sheet pile side restraint means simultaneously with or concurrently with the installation work of the panel member, Since the work of a separate process of welding the joint portion of the steel sheet pile becomes unnecessary, the construction period can be shortened also in this respect, and the construction cost can be further reduced. Moreover, the thickness dimension of the whole wall which combined the wall main body and the panel member can be made small by connecting the steel sheet pile side restraint means and the panel side restraint means effectively using the recessed part of a steel sheet pile. .

  According to the configuration described in (6) above, the plate-like portion is provided on the steel sheet pile, and the plate-like portion and the protruding portion of the panel side restraining means are fixed by the fixing tool, so that the fixing work can be easily and quickly performed. Can be implemented. At this time, as the plate-like portion, it is preferable that the steel sheet pile is excavated after the steel sheet pile driving and the steel sheet pile is exposed, and then fixed to the surface by welding or the like. By fixing the steel sheet pile later, it is possible to prevent an increase in resistance at the time of placing the steel sheet pile and to absorb the construction error of the steel sheet pile itself to attach the plate-like portion at a predetermined position.

  According to the configuration described in (7) above, the plate-like portion of the steel sheet pile-side restraining means and the protruding portion of the panel-side restraining means are fixed using bolts and nuts, and the plate-like portion and the protruding portion have a large diameter. By providing a hole, it is possible to fix the panel side restraining means to the steel sheet pile side restraining means while adjusting the position, absorb the construction error of the steel sheet pile itself, and easily install the panel member at the predetermined mounting position can do.

  According to the configuration described in (8) above, the protrusion of the panel side restraining means is inserted into the fitting piece of the steel sheet pile side restraining means so that the panel side restraining means and the steel sheet pile side restraining means move up and down. Therefore, the fixing work on the back side of the panel member can be made unnecessary, and the shear deformation between the steel sheet piles can be restricted by a simple operation of installing the panel member from the front side toward the steel sheet pile. .

  According to the configuration described in (9) above, the projecting portion is inserted while the sliding contact surface is slidably contacted with the inclined surface of the fitting piece portion, so that a clearance for absorbing a construction error is not required, and a predetermined value is obtained. The panel side restraining means and the steel sheet pile side restraining means can be connected at the fitting position.

  According to the configuration described in (10) above, since the fixing portion of the panel side restraining means is fixed to the panel member with the fixing tool, the panel side restraining means in a state where the fixing tool is removed and removed from the panel member. After connecting to the steel sheet pile side restraining means, the panel side restraining means and the panel member can be fixed with a fixing tool from the front side, and a hand or a tool is inserted into the narrow gap between the panel member and the steel sheet pile. Since there is no need to work, workability can be improved.

  According to the configuration described in (11) above, the reinforcing plate fixed by the panel member constitutes the panel side restraining means, and the steel sheet pile side restraining means is constituted by the fixing tool penetrating the reinforcing plate, whereby the reinforcing plate The shear deformation between the steel sheet piles can be constrained only by joining a pair of fixing tools that pass through to adjacent steel sheet piles. Accordingly, the connection work between the panel side restraint means and the steel sheet pile side restraint means can be performed from the front side of the panel member, and the connection work and the fixing work of the panel member itself can be performed simultaneously. The sex can be greatly improved.

  According to the configuration described in the above (12), the nut is fixed to the steel sheet pile, and the bolt through which the panel member and the reinforcing plate are penetrated from the front side is screwed to the nut. Can be implemented. At this time, as the nut, it is preferable that the steel sheet pile is excavated after the steel sheet pile is cast to expose the steel sheet pile, and then fixed to the surface by welding or the like, and thus the nut is fixed later. Thus, an increase in resistance at the time of steel sheet pile driving can be prevented, and a construction error of the steel sheet pile itself can be absorbed to attach the nut at a predetermined position.

  According to the configuration described in (13), the panel member can be reliably and easily fixed to the steel sheet pile by providing the fixing means separately from the panel side restraining means and the steel sheet pile side restraining means. . As such a fixing means, it is preferable to be provided at a position different from the joint portion of the adjacent steel sheet piles. For example, the fixing means is provided so as to connect the flange located on the front side of the steel sheet pile and the panel member. It is preferable.

  According to the configuration described in (14) above, the panel member is constituted by a landscape panel member, that is, the panel member itself does not function as a structural body such as a seismic wall and is provided as a design finishing material on the front side. Even if it is a thing, as mentioned above, since the wall main body which consists of a steel sheet pile functions as an earthquake-resistant wall, the structure and attachment structure of panel member itself can be simplified, and cost reduction can be aimed at further.

  According to the underground outer wall structure of the present invention as described above, it becomes possible to constrain the shear deformation at the connecting portion of the steel sheet pile simultaneously with the installation of the panel member used mainly for the purpose of improving the beauty. It is no longer necessary to construct an RC wall that bears in-plane loads during an earthquake, and an underground outer wall can be constructed with a steel sheet pile alone. Moreover, the construction cost and construction period required for the construction of the RC wall can be greatly reduced, and the cost can be reduced and the construction period can be shortened.

It is a cross-sectional view which shows the underground outer wall which concerns on 1st Embodiment of this invention. It is a front view which shows the said underground outer wall. It is a longitudinal cross-sectional view which shows the said underground outer wall. It is a perspective view which shows the wall main body of the said underground outer wall. It is sectional drawing which shows the construction procedure of the said underground outer wall. It is sectional drawing which shows the construction procedure of the said underground outer wall. It is sectional drawing which shows the construction procedure following FIG. 5A and FIG. 5B. It is sectional drawing which shows the construction procedure following FIG. 5A and FIG. 5B. It is a longitudinal cross-sectional view which shows the modification of the said underground outer wall. It is a longitudinal cross-sectional view which shows the modification of the said underground outer wall. It is a longitudinal cross-sectional view which shows the modification of the said underground outer wall. It is a longitudinal cross-sectional view which shows the modification of the said underground outer wall. It is a cross-sectional view which shows the underground outer wall of 2nd Embodiment. It is a front view which shows the underground outer wall. It is a longitudinal cross-sectional view which shows the underground outer wall. It is a perspective view which shows the wall main body of the said underground outer wall. It is a longitudinal cross-sectional view which expands and shows a part of said underground outer wall. It is a figure which shows a modification about the expansion part shown by FIG. 10A. It is a longitudinal cross-sectional view which expands and shows the other part of the said underground outer wall. It is a figure which shows a modification about the expansion part shown by FIG. 11A. It is a cross-sectional view which shows the underground outer wall of 3rd Embodiment. It is a front view which shows the underground outer wall. It is a longitudinal cross-sectional view which shows the underground outer wall. It is the cross-sectional view which shows the underground outer wall of 4th Embodiment, a front view, and a longitudinal cross-sectional view. It is a front view which shows the underground outer wall. It is a longitudinal cross-sectional view which shows the underground outer wall. It is a perspective view which shows the wall main body of the said underground outer wall. It is a perspective view which shows the modification of the said underground outer wall. It is sectional drawing which shows the modification of the said underground outer wall. It is sectional drawing which shows the modification of the said underground outer wall. It is the cross-sectional view which shows the underground outer wall of 5th Embodiment, the front view, and a longitudinal cross-sectional view. It is a front view which shows the underground outer wall. It is a longitudinal cross-sectional view which shows the underground outer wall.

Hereinafter, each embodiment of the present invention will be described with reference to the drawings.
In the second and subsequent embodiments, the same constituent members as those described in the first embodiment and the constituent members having the same functions are denoted by the same reference numerals as those in the first embodiment. Those descriptions are omitted or simplified. In the present invention, the longitudinal direction or the vertical direction of a steel sheet pile or the like indicates the direction in which the steel sheet pile is embedded in the ground unless otherwise specified.

[First Embodiment]
FIG. 1 is a cross-sectional view showing an underground outer wall 1 according to the first embodiment of the present invention. FIG. 2 is a front view of the underground outer wall 1 as viewed from the basement side. 3 is a longitudinal sectional view showing the underground outer wall 1, and is a sectional view obtained along the line III-III in FIG.
1-3, the underground outer wall 1 is a wall structure which partitions the basement space S (panel side space) which is the space of the front side, and the back ground G (steel sheet pile side space) of the back side. The underground outer wall 1 includes a wall body 3 composed of a plurality of steel sheet piles 2 driven into the ground G, and a panel body 4 provided on a side surface on the basement space S side that is one side surface of the wall body 3.

  In the present embodiment, the steel sheet pile 2 is manufactured by hot rolling, and a first flange 21 located at the center of the cross section, a pair of webs 22 connected to both side edges of the first flange 21, and the pair A hat shape having a pair of second flanges 23 extending from the leading edge of the web 22 in parallel and outward to the first flange 21, and a pair of joint portions 24 provided at the leading edges of the pair of second flanges 23. It is a steel sheet pile. Each of these steel sheet piles 2 is provided with a first flange 21 provided along the panel body 4 on the basement space S side and a second flange 23 positioned on the ground G side. And the adjacent steel sheet piles 2 are connected by fitting together the joint parts 24 located in the ground G side apart with respect to the panel body 4, Thereby, the wall main body 3 is formed continuously.

  The panel body 4 has a panel body 41 that is a plate material made of precast concrete (PCa). The panel body 4 is attached to the steel sheet pile 2 from the basement space S side after the steel sheet pile 2 is placed on the ground G and the ground on the basement space S side is excavated. The panel body 4 is a so-called landscape panel in which the surface on the basement space S side is a finished surface in the basement, that is, a so-called landscape panel that functions as a wall finishing material, and covers the steel sheet pile 2 from the basement space S side. Good designability can be secured. In addition, the panel body 4 does not need to function as a structure in the underground outer wall 1, and it is sufficient if it functions as a simple wall finishing material. For this reason, the panel bodies 4 do not need to be joined. Also, the strength of the panel main body 41 may be sufficient if it does not break or fall off during normal use or during an earthquake. For this reason, the panel body 41 is not limited to one made of PCa, but can be made of an appropriate material such as a cement-based molding plate such as ALC, a wooden panel, or a resin panel.

  The steel sheet pile 2 and the panel body 4 described above are a pair of plate-like connecting members (plate-like portions) 5 as a steel sheet pile side restraining means provided on the steel sheet pile 2 side, and a panel side restraint provided on the panel body 4 side. They are connected to each other by an angled connecting member 6 as a means. As shown in FIG. 4, the pair of plate-like connecting members 5 are fixed to the second flange 23 which is a position straddling the joint portion 24 in the adjacent steel sheet piles 2, and the basement space S side from these second flanges 23. Is provided to protrude. These plate-like connecting members 5 are made of piece-shaped steel plates, and are fixed to the second flange 23 by welding after excavating the ground on the basement space S side. Further, the plate-like connecting member 5 is formed with a bolt hole 51 through which a bolt 53 that is a fixing tool to the angle-like connecting member 6 is inserted. The bolt holes 51 are long holes (large-diameter holes) formed long along the protruding direction of the plate-like connecting material 5, and therefore the angle-like connecting material 6 and the panel body 4 with respect to the plate-like connecting material 5. Can be adjusted.

  The angle-shaped connecting member 6 has a fixed portion 61 fixed to the panel body 41 and a protruding portion 62 protruding from the fixed portion 61 toward the steel sheet pile 2 and the ground G side, and is formed in an L-shaped cross section. Yamagata steel. The angle-shaped connecting member 6 is fixed to the panel main body 41 through bolts 63 and nuts 64, which are fixed parts 61, and the protruding parts 62 are connected to a pair of plates through a pair of bolts 53 and nuts 54, respectively. It is connected to the shaped connecting material 5. As shown in FIG. 5A, such an angle-shaped connecting member 6 is connected to the plate-shaped connecting member 5 in a state where the fixing portion 61 is not fixed to the panel body 41, that is, in a state separate from the panel body 4. . Note that a nut 64 is fixed in advance to the back side of the fixing portion 61 by welding. Then, as shown in FIG. 5B, the position of the angle-shaped connecting member 6 is adjusted along the bolt hole 51 of the plate-like connecting member 5 and positioned at a predetermined position, and then the bolt 53 and the nut 54 are tightened to project. The part 62 is fixed to the plate-like connecting material 5.

  After fixing the angle-shaped connecting material 6 to the plate-shaped connecting material 5 as described above, the panel body 41 of the panel body 4 is installed from the basement space S side as shown in FIG. 6A. The panel main body 41 is formed with a through hole 42 through which the bolt 63 is inserted and a recess 43 that accommodates the head of the bolt 63. Then, as shown in FIG. 6B, the panel body 41 and the fixing portion 61 of the angle-shaped connecting member 6 are fixed by screwing the bolt 63 inserted into the through hole 42 from the basement space S side into the nut 64. . At this time, the head of the bolt 63 is accommodated in the recessed portion 43 so as not to protrude toward the basement space S side. As described above, the panel body 4 is attached to the steel sheet pile 2 via the angle-shaped connecting member 6 and the plate-shaped connecting member 5, and at the same time, a pair of plate-like plates of the adjacent steel sheet piles 2 via the angle-shaped connecting member 6. The connecting members 5 are connected to each other, and the relative movement of the pair of plate-like connecting members 5 is restricted by the angle-like connecting member 6.

In addition, in this embodiment, the structure of the plate-shaped connection material 5 which is a steel sheet pile side restraint means and the angle-shaped connection material 6 which is a panel side restraint means is not restricted to the above-mentioned thing, The following FIG. 7A-FIG. The configuration shown can be employed.
In FIG. 7A, the angle-shaped connecting member 6 is formed in an inverted L-shaped cross section with a protruding portion 62 protruding from the upper end of the fixed portion 61.
In FIG. 7B, the angle-shaped connecting member 6 has a protruding portion 62 protruding from the center of a pair of upper and lower (longitudinal) fixing portions 61 so as to have a T-shaped cross section, and the upper and lower fixing portions 61 are respectively bolts 53 and nuts 54. It is fixed to the panel body 41.
In FIG. 7C, the angle-shaped connecting member 6 is formed to have a reinforcing rib 65 that connects the fixed portion 61 and the protruding portion 62.
In FIG. 7D, the plate-like connecting member 5 is formed having a reinforcing rib 55 that is joined to the second flange 23 of the steel sheet pile 2.

According to the underground outer wall 1 of the present embodiment as described above, the following actions and effects can be obtained.
That is, in the underground outer wall 1 of the present embodiment, the protruding portions 62 of the angle-shaped connecting material 6 are fixed across the pair of plate-shaped connecting materials 5 fixed at positions that straddle the joint portions 24 in the adjacent steel sheet piles 2. And the shear deformation that the adjacent steel sheet piles 2 shift in the vertical direction (longitudinal direction) is restrained. For this reason, the wall main body 3 which consists of the connected several steel sheet pile 2 can be functioned as an earthquake-resistant wall. Therefore, since the wall main body 3 can be used not as a temporary earth retaining but as a main wall structure, it is not necessary to construct a conventional RC wall. As a result, the construction cost can be greatly reduced, and the construction period for constructing the RC wall and the construction period for pulling out the temporary earth retaining can be eliminated, so the construction period required for underground construction can be greatly shortened. Can do.

  In addition, as a construction procedure, after the steel sheet pile 2 is placed on the ground G and the ground on the basement space S side is excavated, the plate-like connecting member 5 is fixed to the steel sheet pile 2 from the basement space S side, A procedure of fixing the angle-shaped connecting material 6 to the plate-shaped connecting material 5 with bolts 53 and nuts 54 and then fixing the panel body 41 of the panel body 4 to the angle-shaped connecting material 6 with bolts 63 and nuts 64 can be adopted. . Therefore, each member can be installed from the basement space S side, and the workability of the attaching work can be improved.

  In addition, the plate-like connecting material 5 is fixed to the second flange 23 located on the ground G side of the steel sheet pile 2, and the protruding portion 62 of the angle-like connecting material 6 is provided extending to the ground G side. The plate-like connecting member 5 and the angle-like connecting member 6 can be connected using a portion recessed toward the ground G side from the first flange 21 of the steel sheet pile 2. Accordingly, since the panel body 4 can be installed along the first flange 21 of the steel sheet pile 2, the thickness dimension of the entire underground outer wall 1 can be reduced, and the basement space S can be expanded and effectively used.

[Second Embodiment]
Next, 1 A of underground outer walls of 2nd Embodiment of this invention are demonstrated based on FIG. 8A-FIG. 11B.
8A to 8C are a cross-sectional view, a front view, and a vertical cross-sectional view showing the underground outer wall 1A according to the second embodiment. FIG. 9 is a perspective view showing the wall body 3 of the underground outer wall 1A.
1 A of underground outer walls differ in the structure of the steel sheet pile side restraint means and the panel side restraint means compared with the underground outer wall 1 which concerns on the said 1st Embodiment. The underground outer wall 1A is different from the underground street wall 1 in that a fixing means 7 for fixing the panel body 41 to the steel sheet pile 2 is provided in addition to the panel side restraining means and the steel sheet pile side restraining means. To do. Hereinafter, these differences will be described in detail.

  The fixing means 7 includes a bolt 71 that penetrates through the panel body 41 and a nut 72 that is fixed to the first flange 21 of the steel sheet pile 2 and screwed into the bolt 71. In this fixing means 7, as shown also in FIG. 10A, after excavating the ground on the basement space S side, a nut 72 is welded and fixed to the first flange 21, and the through hole 42 of the panel body 41 is penetrated from the basement space S side. The panel main body 41 is fixed to the steel sheet pile 2 by screwing the bolt 71 into the nut 72. Further, as shown in FIG. 10B, if the recess 44 that accommodates the nut 72 is formed on the back side of the panel main body 41, the panel main body 41 can be fixed close to the first flange 21 of the steel sheet pile 2.

  Further, the steel sheet pile side restraining means in the present embodiment is configured to have a pair of fitting pieces 8 that protrude from the second flange 23 of the steel sheet pile 2 toward the panel body 4 and face each other vertically. ing. And one set of fitting piece part 8 is being fixed to the 2nd flange 23 of the position over the joint part 24 in the adjacent steel sheet pile 2, respectively, and these one set of fitting piece part 8 is provided in a pair. The steel sheet pile side restraint means is comprised by this. On the other hand, the panel side restraint means in this embodiment is comprised by the connection material 9 which has the protrusion part 91 which protrudes toward the ground G side like the said plate-shaped connection material 5. As shown in FIG. The fixed portion of the connecting material 9 is embedded in the panel main body 41.

And as shown also to FIG. 11A, the inclined surface 81 opened toward the panel body 4 side is formed in the opposing surface in a set of fitting piece part 8. As shown in FIG. A slidable contact surface 92 that can slidably contact the inclined surface 81 is formed at the tip of the protruding portion 91. By inserting the protruding portion 91 of the connecting member 9 from the basement space S side toward the ground G side between the pair of fitting piece portions 8, the connecting member 9 and the fitting piece portion 8 can be vertically moved. Relative movement is restricted, and shear deformation between adjacent steel sheet piles 2 is restricted.
In addition, as a structure of the fitting piece part 8 and the connection material 9, the opposing surface of the fitting piece part 8 is shown in FIG. 11B, without forming the inclined surface 81 and the sliding contact surface 92 like FIG. 11A. May be formed in parallel, and the protrusion 91 of the connecting member 9 may be formed in a flat plate shape. Further, the fitting piece portion 8 is formed having a reinforcing rib 82 joined to the second flange 23 of the steel sheet pile 2, and the connecting member 9 has a reinforcing rib 93 joined to the fixing portion in the panel body 41. May be formed.

According to the underground outer wall 1A of the second embodiment as described above, the shear deformation between the adjacent steel sheet piles 2 is restrained in substantially the same manner as in the first embodiment. Therefore, the wall body 3 can function as a seismic wall. For this reason, it is not necessary to construct a conventional RC wall, so that the construction cost can be greatly reduced and the construction period can be greatly shortened.
Further, since the relative movement in the vertical direction between the connecting member 9 and the fitting piece 8 can be restrained only by inserting the protruding portion 91 between the pair of fitting pieces 8, the connecting member 9 and the fitting piece 8. And fixing work can be made unnecessary. Therefore, since the panel body 41 with the connecting member 9 fixed is installed from the basement space S side, the connecting member 9 and the fitting piece 8 are connected, so the work process is shortened and the working efficiency is improved. be able to. And since the panel body 4 itself is fixed to the steel sheet pile 2 by the fixing means 7 separately from the panel side restraining means and the steel sheet pile side restraining means, this fixing work can also be carried out from the basement space S side, which is good. Workability can be secured.

[Third Embodiment]
Next, the underground outer wall 1B of 3rd Embodiment of this invention is demonstrated based on FIG. 12A-FIG. 12C.
12A, 12B, and 12C are a cross-sectional view, a front view, and a vertical cross-sectional view showing the underground outer wall 1B according to the third embodiment.
Although the underground outer wall 1B is different from the first and second embodiments in that the wall body 3A is configured by using the first steel sheet pile 2A and the second steel sheet pile 2B which are U-shaped steel sheet piles, the steel sheet pile side restraining means The configuration of the fitting piece 8 as a connecting member, the connecting member 9 as a panel side restraining means, and the fixing means 7 is substantially the same as that of the second embodiment. Hereinafter, the differences will be described in detail.

  Each of the first steel sheet pile 2A and the second steel sheet pile 2B includes a flange 25, a pair of webs 26 connected to both side edges of the flange 25, and a pair of joints provided at the leading edges of the pair of webs 26. A U-shaped steel sheet pile having a portion 27. The first steel sheet pile 2A is provided with its flange 25 positioned on the ground G side which is the back side, and the second steel sheet pile 2B is provided with its flange 25 positioned on the panel body 4 side. And the 2nd steel sheet piles 2A and 2B are connected by mutually adjoining and mutually fitting the joint part 27. FIG. And the panel body 4 is being fixed to the flange 25 of the 2nd steel sheet pile 2B by the fixing means 7 separately from the panel side restraint means and the steel sheet pile side restraint means.

  The pair of fitting pieces 8 which are steel sheet pile side restraining means in the present embodiment are respectively fixed to the webs 26 at positions over the joint portions 27 in the adjacent first and second steel sheet piles 2A and 2B. . On the other hand, the connecting member 9 which is the panel side restraining means in the present embodiment is composed of a pair protruding from the panel body 41 toward the two-way web 26, and the protruding portions 91 of each connecting member 9 are a set of fittings. By being inserted between the pieces 8, the relative movement in the vertical direction between the connecting member 9 and the fitting piece 8 is restricted, and the shear deformation of the adjacent first and second steel sheet piles 2A and 2B is restricted. The According to such an underground outer wall 1B of the third embodiment, substantially the same effect as that of the second embodiment can be obtained.

[Fourth Embodiment]
Next, 1 C of underground outer walls of 4th Embodiment of this invention are demonstrated based on FIG. 13A-FIG. 16B.
13A to 13C are a cross-sectional view, a front view, and a vertical cross-sectional view showing an underground outer wall 1C according to the fourth embodiment. FIG. 14 is a perspective view showing a wall body 3B of the underground outer wall 1C.
Although the wall main body 3B is comprised using the steel sheet pile 2 which is a hat-shaped steel sheet pile similarly to the said 1st, 2 embodiment, the underground outer wall 1C is the direction of installation of the steel sheet pile 2 in 1st, 2nd embodiment. Is different. Moreover, the structure of the steel sheet pile side restraint means and the panel side restraint means is different from each said embodiment. Hereinafter, the differences will be described in detail.

  As for the steel sheet pile 2, the 1st flange 21 is provided in the ground G side, and the 2nd flange 23 is provided along the panel body 4 by the basement space S side. And the adjacent steel sheet piles 2 are connected by fitting the joint parts 24 close to the panel body 4 together. Thereby, the wall main body 3B is formed continuously.

  The steel sheet pile side restraining means in this embodiment is a fixing member (fixing tool) having a bolt 101 penetrating the panel main body 41 and a nut 102 fixed to the second flange 23 of the steel sheet pile 2 and screwed into the bolt 101. 10 is comprised. The fixing members 10 are respectively fixed to the second flanges 23 at the positions straddling the joint portions 24 in the adjacent steel sheet piles 2, and the pair of fixing members 10 constitute a steel sheet pile side restraining means. On the other hand, the panel side restraining means in the present embodiment is composed of a reinforcing plate 11 embedded on the back side of the panel main body 41, and the reinforcing plate 11 is provided across the pair of fixing members 10 and the panel body 4. It is fixed to the panel body 41 continuously in the height direction.

  In the fixing member 10 and the reinforcing plate 11 described above, after first excavating the ground on the basement space S side, the nut 102 is welded and fixed to the second flange 23, and the panel main body 41 and the reinforcing plate 11 from the basement space S side of the panel body 4. The bolt 101 penetrating the screw is screwed into the nut 102. Thereby, while the panel main body 41 is fixed to the steel sheet pile 2, the shear deformation of adjacent steel sheet piles 2 is restrained. According to the underground outer wall 1 </ b> C of the fourth embodiment, it is possible to obtain substantially the same effects as those of the above embodiments.

  In the present embodiment, the panel-side restraining means is not limited to the one that is fixed to the panel body 41 continuously in the height direction of the panel body 4 like the reinforcing plate 11, and is not limited to FIGS. As shown to 16B, you may be comprised with the reinforcement board 12 which consists of a steel plate divided | segmented for each steel sheet pile side restraint means. At this time, the reinforcing plate 12 has a flat side surface on the back side as shown in FIG. 16A, and a nut 102 is provided between the reinforcing plate 12 and the second flange 23 of the steel sheet pile 2. The gap may be formed between the reinforcing plate 12 and the second flange 23 by the thickness of the nut 102. 16B, the reinforcing plate 12 is installed inside a concave box-shaped member 121 embedded in the panel main body 41, and the nut 102 is accommodated in the box-shaped member 121, whereby the panel main body is accommodated. The back surface of 41 and the 2nd flange 23 of the steel sheet pile 2 may be comprised so that it may adjoin or contact | abut.

[Fifth Embodiment]
Next, an underground outer wall 1D according to a fifth embodiment of the present invention will be described with reference to FIGS. 17A, 17B, and 17C.
17A to 17C are a cross-sectional view, a front view, and a vertical cross-sectional view showing an underground outer wall 1D according to the fifth embodiment.
The underground outer wall 1D includes a wall main body 3B similar to that of the fourth embodiment, a pair of plate-like connecting members 5 serving as steel sheet pile side restraining means similar to those of the first embodiment, and an angled connection serving as panel restraining means. Material 6. That is, on the basement space S side of the second flange 23 provided to be located on the basement space S side, a pair of plate-like connecting members 5 is fixed at a position straddling the joint portion 24, and the pair of plate-like connecting members 5. The angle-shaped connecting member 6 extending from the panel body 4 is fixed to the plate body 4, thereby restraining the shear deformation between the adjacent steel sheet piles 2. According to the underground outer wall 1D of the fifth embodiment, it is possible to obtain substantially the same effect as that of the first embodiment.

In addition, this invention is not limited to the said embodiment, Including other structures etc. which can achieve the objective of this invention, the deformation | transformation etc. which are shown below are also contained in this invention.
For example, in the above embodiment, the underground outer walls 1, 1A, 1B, 1C, and 1D have been described. However, the wall structure of the present invention is not limited to the underground outer wall, and can be applied to a wall constructed on the ground. is there. That is, the upper end of the steel sheet pile may protrude from the ground surface to the ground, and a panel body may be installed on one side of the protruding steel sheet pile. In this case, the rear side of the steel sheet pile There is no ground, and an appropriate back space such as an external space or an internal space may be located. And also on the back side, the same panel body as described above may be attached via the steel sheet pile side restraining means and the panel side restraining means.
Moreover, in the said embodiment, although the hat-shaped steel sheet pile (steel sheet pile 2) and the U-shaped steel sheet pile (steel sheet pile 2A, 2B) were utilized as a steel sheet pile which comprises wall main body 3,3A, 3B, the form of a steel sheet pile Is not particularly limited, and appropriate materials such as a Z-shaped steel sheet pile and an I-shaped steel sheet pile can be used.

In addition, the best configuration, method and the like for carrying out the present invention have been disclosed in the above description, but the present invention is not limited to this. That is, the invention has been illustrated and described with particular reference to certain specific embodiments, but without departing from the spirit and scope of the invention, Various modifications can be made by those skilled in the art in terms of materials, quantities, and other detailed configurations.
Therefore, the description limiting the shape, material, etc. disclosed above is an example for easy understanding of the present invention, and does not limit the present invention. The description by the name of the member which remove | excluded the limitation of some or all of such restrictions is included in this invention.

  According to the present invention, an RC wall for resisting an in-plane load at the time of an earthquake is not required, and a joint restraint means that allows easy construction and strength management so that an underground outer wall can be constructed with a steel sheet pile alone. In addition, it is possible to provide an underground outer wall structure having a function as a seismic wall, and to provide an underground outer wall structure that can realize significant cost reduction. Therefore, industrial applicability is great.

1, 1A, 1B, 1C, 1D ... underground outer wall 2 ... steel sheet pile 2A ... first steel sheet pile 2B ... second steel sheet pile 3, 3A, 3B ... wall body 4 ... panel body 5 ... plate-like connecting material (plate-like part) Steel sheet pile side restraining means)
6 ... Angle-shaped connecting material (panel-side restraining means)
7: Fixing means 8: Fitting piece (steel sheet pile side restraining means)
9 ... Connecting material (Panel side restraining means)
10: Fixing member (fixing tool)
11, 12 ... Reinforcing plate (Panel side restraining means)
21 ... 1st flange 22 ... Web 23 ... 2nd flange 24 ... Joint part 25 ... Flange 26 ... Web 27 ... Joint part 41 ... Panel body 51 ... Bolt hole (large diameter hole)
53 ... Bolt 54 ... Nut 61 ... Fixed portion 62, 91 ... Projection 63 ... Bolt 64 ... Nut 71 ... Bolt 72 ... Nut 81 ... Inclined surface 92 ... Sliding contact surface 101 ... Bolt 102 ... Nut G ... Ground (steel sheet pile side) space)
S ... Basement space (panel side space)

The present invention employs the following means in order to solve the above-described problems.
(1) One aspect of the present invention is a plurality of steel sheet piles that are connected to each other by joint portions provided at respective side edges and embedded in the ground to partition the ground side and the basement space side; It is a basement outer wall structure provided with a pair of steel sheet pile side restraint means each provided in the straddling position; a panel member provided in the basement space side; and a panel side restraint means provided in the panel member. The panel side restraining means is fixed across the pair of steel sheet pile side restraining means, and the pair of steel sheet pile side restraining means of the adjacent steel sheet piles are connected via the panel side restraining means, The panel side restraining means and the pair of steel sheet pile side restraining means are connected so as to restrain relative movement in the embedding direction of the steel sheet pile.
(2) In the underground wall structure according to (1), the plurality of steel sheet piles include a first flange disposed on the basement space side; and a pair of both ends connected to both side edges of the first flange. And a pair of second flanges extending parallel to the first flange from the leading edge of the pair of webs and disposed on the ground side, and at the leading edge of the pair of second flanges It is a hat-shaped steel sheet pile provided with a pair of the joint portions, and one of the pair of steel sheet pile side restraining means may be provided on the surface of each of the pair of second flanges facing the basement space side.
(3) In the underground wall structure according to (1), the plurality of steel sheet piles include a first flange disposed on the ground side; and a pair of webs continuously provided on both side edges of the first flange. And a pair of second flanges extending in parallel to the first flange from the leading edges of the pair of webs and disposed on the basement space side, and at the leading edges of the pair of second flanges It is a hat-shaped steel sheet pile provided with a pair of the joint portions, and one of the pair of steel sheet pile side restraining means may be provided on a surface facing the basement space side in each of the pair of second flanges.
(4) In the underground wall structure according to (1), the plurality of steel sheet piles include a flange; and a pair of webs that are connected to both side edges of the flange; and tips of the pair of webs It is the 1st U-shaped steel sheet pile and 2nd U-shaped steel sheet pile in which a pair of said joint part is provided in an edge, The said 1st U-shaped steel sheet pile by which the said flange is arrange | positioned at the said ground side, and the said flange Are alternately arranged with the second steel sheet piles arranged on the basement space side, and faces the basement space side in the respective webs of the first U-shaped steel sheet pile and the second U-shaped steel sheet piles. The pair of steel sheet pile side restraining means may be provided.
(5) In the underground wall structure according to any one of (1) to (4), the panel-side restraining means includes a fixed portion fixed to the panel member; and from the fixed portion to the ground side A projecting portion projecting toward the pair, and the projecting portion may be connected to the pair of steel sheet pile side restraining means.
(6) In the underground wall structure according to (5), the pair of steel sheet pile side restraining means includes a plate-like portion protruding from the steel sheet pile toward the basement space side, and the plate-like portion and The protruding portion of the panel side restraining means may be fixed via a fixing tool.
(7) In the underground wall structure according to (6), the fixing tool includes a bolt that penetrates the plate-like portion of the pair of steel sheet pile side restraining means and the protruding portion of the panel side restraining means; A nut that is screwed onto the bolt, and at least one of the plate-like portion and the protruding portion may be provided with a large-diameter hole capable of adjusting the position of the bolt.
(8) In the underground wall structure described in (5) above, the pair of steel sheet pile side restraining means protrude from the steel sheet pile toward the basement space side, and are spaced apart from each other in the embedding direction of the steel sheet pile. A pair of fitting pieces provided so as to do so, and the protruding portion of the panel side restraining means may be inserted between the pair of fitting pieces.
(9) In the underground wall structure according to (8), an inclined surface is formed on the opposing surfaces of the pair of fitting pieces so as to widen toward the basement space side, and the panel side constraint A sliding contact surface capable of sliding contact with the inclined surface of the pair of fitting pieces may be formed at the tip of the protruding portion of the means.
(10) In the underground wall structure according to (5) above, the panel member is fixed to the panel member by a fixing tool that penetrates the panel member from a surface facing the basement space side of the panel member. It may be fixed to.
(11) In the underground wall structure according to any one of (1) to (4), the panel side restraining means includes a reinforcing plate fixed to a surface of the panel member facing the ground side. The pair of steel sheet pile side restraining means may include a pair of fasteners that penetrate the panel member and the reinforcing plate from the surface of the panel member facing the basement space side and are joined to the steel sheet pile. .
(12) In the underground wall structure according to (11), the pair of fixing tools includes a pair of bolts that pass through the panel member and the reinforcing plate; and a bolt that is fixed at a position straddling the joint portion. And a pair of nuts to be screwed together.
(13) The underground wall structure according to any one of (1) to (12) may further include a fixing unit that fixes the panel member to the steel sheet pile.
(14) In the underground wall structure according to any one of (1) to (13), the panel member is a landscape panel member in which a surface facing the basement space functions as a wall finishing material. Also good.

Claims (14)

A plurality of steel sheet piles that are connected to each other by joint portions provided at respective side edges and embedded in the ground to divide the ground side and the basement space side;
A pair of steel sheet pile side restraining means provided at a position straddling the joint;
A panel member provided on the basement space side;
Panel-side restraining means provided on the panel member;
An underground outer wall structure comprising:
The underground outer wall structure, wherein the panel side restraining means and the pair of steel sheet pile side restraining means are connected so as to restrain relative movement in the embedding direction of the steel sheet pile. The plurality of steel sheet piles,
A first flange disposed on the basement space side;
A pair of webs connected to both side edges of the first flange;
A pair of second flanges extending parallel to the first flange from the leading edges of the pair of webs and disposed on the ground side;
A hat-shaped steel sheet pile in which a pair of the joint portions are provided at the tip edges of the pair of second flanges,
The underground outer wall structure according to claim 1, wherein one of the pair of steel sheet pile side restraining means is provided on a surface of each of the pair of second flanges facing the basement space side. The plurality of steel sheet piles are:
A first flange disposed on the ground side;
A pair of webs connected to both side edges of the first flange;
A pair of second flanges extending from the front edge of the pair of webs in parallel and outward to the first flange and disposed on the basement space side;
A hat-shaped steel sheet pile in which a pair of the joint portions are provided at the tip edges of the pair of second flanges,
The underground outer wall structure according to claim 1, wherein one of the pair of steel sheet pile side restraining means is provided on a surface of each of the pair of second flanges facing the basement space side. The plurality of steel sheet piles are:
With a flange;
A pair of webs connected to both side edges of the flange;
And a first U-shaped steel sheet pile and a second U-shaped steel sheet pile in which a pair of the joint portions are provided at the tip edges of the pair of webs,
The first U-shaped steel sheet pile in which the flange is arranged on the ground side and the second steel sheet pile in which the flange is arranged on the basement space side are alternately arranged,
The pair of steel sheet pile side restraining means is provided on the surface of the first U-shaped steel sheet pile and the second U-shaped steel sheet pile facing the basement space side in each web. The underground outer wall structure according to 1. The panel side restraining means is
A fixing portion fixed to the panel member;
A protruding portion protruding from the fixed portion toward the ground side;
Including
The underground outer wall structure according to any one of claims 1 to 4, wherein the protruding portion is connected to the pair of steel sheet pile side restraining means. The pair of steel sheet pile side restraining means has a plate-like portion protruding from the steel sheet pile toward the basement space side,
The underground outer wall structure according to claim 5, wherein the plate-like portion and the protruding portion of the panel side restraining means are fixed via a fixing tool. The fastener is
A bolt penetrating the plate-like portion of the pair of steel sheet pile side restraining means and the protruding portion of the panel side restraining means;
A nut screwed onto the bolt;
Including
The underground outer wall structure according to claim 6, wherein a large-diameter hole capable of adjusting a position of the bolt is provided in at least one of the plate-like portion and the protruding portion. The pair of steel sheet pile side restraining means includes a pair of fitting pieces that protrude from the steel sheet pile toward the basement space side and are provided to be spaced apart from each other in the embedding direction of the steel sheet pile,
The underground outer wall structure according to claim 5, wherein the protruding portion of the panel side restraining means is inserted between the pair of fitting pieces.   The opposing surfaces of the pair of fitting pieces are formed with inclined surfaces so that the width is widened toward the basement space side, and the pair of fittings are formed at the ends of the protruding portions of the panel side restraining means. The underground outer wall structure according to claim 8, wherein a sliding contact surface capable of sliding contact with the inclined surface of the one part is formed.   The said fixing | fixed part of the said panel side restraint means is being fixed to the said panel member by the fixing tool penetrated to the said panel member from the surface which faces the said basement space side in the said panel member. Underground underground wall structure. The panel side restraining means has a reinforcing plate fixed to the surface of the panel member facing the ground side,
The pair of steel sheet pile side restraining means includes a pair of fasteners that penetrate the panel member and the reinforcing plate from a surface of the panel member facing the basement space side and are joined to the steel sheet pile. The underground outer wall structure according to any one of claims 1 to 4. The pair of fasteners are:
A pair of bolts penetrating the panel member and the reinforcing plate;
A pair of nuts fixed at a position straddling the joint and screwed onto the bolt;
The underground outer wall structure according to claim 11, comprising:   The underground outer wall structure according to any one of claims 1 to 4, further comprising fixing means for fixing the panel member to the steel sheet pile.   The underground outer wall structure according to any one of claims 1 to 4, wherein the panel member is a landscape panel member whose surface facing the basement space functions as a wall finishing material.

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