JP3541237B2 - Earth retaining panel for trench cut method - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a retaining panel used mainly when a trench having a depth of about 3 m is excavated in the ground by a trench cut method for burying water / sewer pipes and the like.
[0002]
[Prior art]
Conventionally, various types of earth retaining panels for a trench cut method are known.
For example, Japanese Unexamined Utility Model Publication No. 53-33210 discloses a configuration in which a column made of H-section steel or the like is built, a retaining panel is built in the H-steel groove, and the column is supported by a support jack instead of a cutting beam. I have.
[0003]
Japanese Utility Model Publication No. 59-1849 discloses a jack mounting portion in which channel members are arranged and fixed in parallel in a back-to-back direction along one side surface of a support column, and a jack at a shaft end of a support jack is provided. A jack mounting structure is disclosed in which the connector has an end metal fitting inserted into a groove portion of the jack mounting portion with a space between the jack mounting portion and a pin to stop.
[0004]
Japanese Utility Model Publication No. 7-43168 discloses a configuration in which earth retaining panels fitted and stacked in guide grooves of a vertically erected column are supported by support jacks erected like cut beams between the columns. There is disclosed a jack mounting structure in which a channel and a vertical portion of a column are sandwiched between two branches of a connection fitting and bolted to the column and jack.
[0005]
In Japanese Utility Model Publication No. 58-47090, an upward and downward connecting hole is provided at the upper and lower connecting portions of the retaining panel, and a short rod-shaped connecting metal fitting is fitted into the connecting hole of the upper or lower retaining panel and horizontally stopped. An earth retaining panel connection structure is described in which a retaining pin is inserted and the connecting metal fitting is fitted into a connection hole of the other earth retaining panel, and the earth retaining panel and the connecting metal are fastened with a fixing pin.
[0006]
Japanese Utility Model Laid-Open Publication No. 1-138936 discloses a soil having a configuration in which square pipe posts are provided on both sides of a retaining panel, and a connection fitting fitted into an opening of the square pipe post is fastened with a horizontally inserted stopper pin. A fastening panel connection structure is described.
Japanese Utility Model Publication No. 6-34423 discloses that a connecting member made of H-shaped steel is projected from a lower end of a guide rail (post) supporting a retaining panel, while the connecting member is formed in a rectangular hollow portion at an upper end of the guide rail. Is described, and a retaining panel connection structure is described in which a retaining pin is inserted and connected.
[0007]
Next, Japanese Utility Model Application Laid-Open No. 56-121738 discloses that the flat plate projecting toward the front side in the horizontal direction from the face plate along the upper and lower edges of the retaining panel is fixed, and the retaining panels are stacked one on top of the other. An earth retaining panel connection structure is described in which a flat plate is joined with a connecting hardware having a U-shaped groove-shaped fixing jaw holding a protruding portion of the flat plate.
[0008]
[Problems to be solved by the present invention]
As mentioned above, a variety of retaining panels and retaining devices have been developed. The main goal of such development is to summarize the connection means between the upper and lower retaining panels and the jack mounting structure for connecting the retaining panels and the support jacks (cut beams). Another object of the present invention is to provide a lightweight, inexpensive and easy-to-use earth retaining panel. That is,
As described in Japanese Utility Model Application Laid-Open No. 53-33210, etc., in the case of a configuration in which the strut and the retaining panel are separated, the number of components is increased, which is inconvenient for transportation and storage. However, since the time and labor required for installation are increased, workability is ultimately poor and expensive.
[0009]
A conventional jack mounting structure described in Japanese Utility Model Publication No. 59-1849, Japanese Utility Model Publication No. 7-43168, etc. is a jack having a rail-like shape in the vertical direction on one side of a pillar which is formed separately from a retaining panel. This is a relatively large structure in which a mounting portion is provided, a jack connector having a special structure is fitted into the jack mounting portion, and pins are connected while being slid up and down.
[0010]
The connection structure of the upper and lower retaining panels described in Japanese Utility Model Publication No. 58-47090 and the like also has a structure in which the columns and the retaining panels are separate bodies. The same can be said for the panel connection structure.
The connection structure of the upper and lower retaining panels described in Japanese Utility Model Application Laid-Open No. 56-121738 is a structure in which the connecting hardware is fastened and fixed by bolts. In addition, since the connecting hardware has a configuration in which a flat plate portion slightly protruding inward of the retaining panel is joined to a shape held by a fixed jaw, there is a problem that the retaining panel is weak against bending action in which the retaining panel falls down inward due to earth pressure.
[0011]
Accordingly, an object of the present invention is to provide a structure in which a support is integrated with a panel, which is lightweight and simple in structure, and a connection structure between earth retaining panels stacked vertically, and a jack mounting for a cut beam. An object of the present invention is to provide a retaining panel for a trench cutting method, which has a simple structure, is lightweight, and has an improved configuration that is easy to use.
[0012]
[Means for Solving the Problems]
As means for solving the above-mentioned problems, a plurality of retaining panels for a trench cut method according to the invention of claim 1 are vertically stacked along a side wall of a trench excavated by the trench cut method. The earth retaining panel
The size of the earth retaining panel, in vertical position along the side edges of the right and left side of the shape which is formed in the face plate (inner surface), is fixed a vertical beam having an open groove with the front of the inner surface side cage, lateral stiffening member is fixed to the left-right direction in the portion between the longitudinal beams of the left and right have the same inner surface of the face plate, a position for closing the opening of the groove the upper end of the vertical beam, a lower end and the constraining plate is fixed to the upper end of the longitudinal beam, at least one of the lower end, the connecting pin for connecting the upper and lower panels stacked is connected a set screw through the through hole formed in the constraining plate pin It is characterized by being installed upward or downward with a configuration in which it is screwed into a screw hole provided in the above.
[0013]
The invention described in claim 2 is the earth retaining panel for the trench cut method according to claim 1 ,
The horizontal stiffening member of the face plate is formed by bending a steel plate into a substantially groove shape, and the inclined surface, the upper edge portion and the lower edge portion formed as a bent surface of the horizontal stiffening member abut against the inner surface of the face plate. that is secured to, and vertical reinforcing members on the inner surface of the right and left longitudinal beams also faceplate to an intermediate portion of fixed vertically, the inclined surface of the vertical reinforcing members the lateral stiffening member, a bent surface It is characterized by being penetrated and covered by a web portion.
[0014]
The invention described in claim 3 is the earth retaining panel for a trench cut method according to claim 1 or 2 ,
The retaining panel with a blade is characterized in that the inner side surface of the horizontal stiffening member of the face plate in the height range from the cutting edge portion to the vicinity of the top level of the buried pipe is formed as a flat surface with an iron plate.
The invention described in claim 4 is the earth retaining panel for the trench cut method according to claim 1,
The groove of the longitudinal beams, short rod-shaped jack fixing member for connecting the jack connector support jack Setsuhari substitute is characterized in that by the supporting shaft Rioko Fukukaido is mounted freely.
[0015]
The invention described in claim 5 is the earth retaining panel for a trench cut method according to claim 1, 2, 3, or 4 ,
A vertical beam provided along the left and right side edges of the inner surface of the face plate is a configuration in which two channel steels or angles are arranged back to back or face to face or side by side, and are combined in parallel at intervals. It is characterized in that the flange of the section steel is fixed to the face plate.
[0016]
The invention according to claim 6 is the earth retaining panel for a trench cut method according to claim 1 ,
Contracture set screw through the through hole provided in Tababan are screwed into threaded holes provided in the connecting pin, characterized in that it is further through the distal end into the through hole of the faceplate.
[0017]
Embodiments and Examples of the Invention
The retaining panel according to the present invention is used in such a manner that a plurality of the retaining panels are vertically stacked along a side wall of a trench excavated on the ground by a trench cut method and are supported by cutting beams. The depth of a trench to be excavated in the ground is set to about 3 m, and basically, three types of large, medium, and small earth retaining panels 10, 15 and 20 are used in combination and stacked. However, a combination of the above three types of panels can be selected and implemented in various ways according to the working conditions of the trench cut method.
[0018]
Each of the large, medium, and small retaining panels 10, 15, and 20 is positioned above and below the right and left edges of one side (inner surface) of the face plate 3 formed into the size and shape of the retaining panel. A horizontal stiffening member 2 formed by bending an iron plate into a substantially groove shape in a portion between the left and right vertical beams 1 and 1 on the same inner surface of the face plate 3 is fixed in the left and right direction. And a plurality of them are arranged and fixed in parallel at intervals in the vertical direction. The vertical beam 1 has a vertically open groove 16 in the vertical direction, and the restraint plate 4 is fixed by welding or the like at positions at the upper end and lower end of the vertical beam 1 to close the front opening of the groove 16. I have. In addition, at least one of the upper end portion and the lower end portion of the vertical beam 1 is provided with a connecting pin 7 for connecting earth retaining panels stacked vertically using the restraining plate 4 to face upward or downward, respectively. Common.
[0019]
5A and 5B show details of the mounting structure of the connecting pin 7. FIG. The connecting pin 7 is formed of a square steel tube having a length of about 76 × 50 mm and a length of about 230 mm so that it can be vertically inserted into and removed from the groove 16 closed by the restraining plate 4. The taper is chamfered to facilitate insertion. In this connection pin 7, screw holes 7a are provided in a symmetrical arrangement in the upper and lower sides of the front and rear side walls formed in a thickness of about 16 mm in a depth direction, and a stopper 7b is provided in an intermediate portion to provide a vertical direction and front and rear directions. Are configured to be able to be used commonly in different directions. On the other hand, the connecting pin 4 is inserted into the groove 16 in the restraining plate 4, and a through hole 4 a is provided at a position where the center of the screw hole 7 a coincides with the center of the screw hole 7 a with the stopper 7 b abutting on the end face of the longitudinal beam 1. Have been. The face plate 3 is also provided with a through hole 3a at a position on the center line of the through hole 4a. 5B is an adjustment liner for adjusting the depth dimension of the groove 16 to the dimension of the connection pin 7, and is also provided with the through hole 3a and a series of through holes on the center line. I have.
[0020]
In short, if required of the connecting pin 7 you experience any earth retaining panel is inserted until the stopper 7b the coupling pin 7 into the grooves 16 of the longitudinal beams 1 abuts. Then, the set screw 6 is inserted into the through hole 4 a from the front side of the restraint plate 4 and screwed into the screw hole 7 a of the connecting pin 7. The set screw 6 shown in FIG. 5B has a butterfly bolt structure in consideration of convenience in use, and its screw portion 6a is screwed into only a screw hole 7a in the side wall on the near side of the connecting pin 7. Is formed. Therefore, when the set screw 6 is screwed in as described above, the connecting pin 7 is pulled toward the constraint plate 4 and fixed. Then, the unthreaded tip portion of the set screw 6 penetrates to the through hole 3a of the face plate 3, thereby supporting the connecting pin 7 in a form of supporting both ends. Thus, the upper half of the connecting pin 7 protrudes at the upper end (or lower end) of the longitudinal beam 1.
[0021]
A total of four restraining plates 4 fixed to the upper and lower ends of the left and right vertical beams 1 and 1 as described above are also inserted into a groove 16 on each inner side by inserting and suspending a bar-shaped hanging bracket. Each retaining panel 10, 15, 20 can be hung flat by a crane. Therefore, it is convenient for movement in a yard, loading work on a truck, and the like.
The lateral stiffening members 2 of the retaining panels 10 and 15 and 20 are formed such that the upper edge and the lower edge of the groove shape are formed on the inclined surfaces 2a and 2b, or the upper edge is formed on the bent surface 2c which is substantially perpendicular. The stiffening effect of the face plate 3 is enhanced by forming, abutting on the face plate 3 and fixing them by means such as welding. The transverse stiffening member 2 is formed by bending an iron plate or a steel plate having a thickness of about 6 mm. The standard form of the lateral stiffening member 2 is a substantially groove shape in which the width of the flat portion (web) is 250 mm, the width of the inclined surfaces 2a and 2b is 50 mm, and the height is about 50 mm. The upper edge of the uppermost horizontal stiffening member 2 is formed as a bent surface 2c that is bent at substantially a right angle. A steel plate having a thickness of about 2.3 mm is used for the face plate 3. Such a configuration is also common to the retaining panels 10, 15, and 20, respectively. Hereinafter, the common configuration will be described only when it is exceptionally different. Note that a portion where importance is placed on weldability with the face plate 3 uses a channel member 18 instead of forming the bent surface (see FIG. 8).
[0022]
A vertical reinforcing member 1 ′ made of a channel steel is also arranged vertically in the middle portion between the left and right vertical beams 1, 1, and is fixed to the face plate 3 to enhance the reinforcing effect. The vertical reinforcing member 1 ′ is installed so as to penetrate the inclined surfaces 2 a, 2 b and the bent surface 2 c of the horizontal stiffening member 2 and to be covered by a web portion. Such a configuration is also common to each retaining panel, thereby improving the strength and rigidity of the entire panel, reducing the weight, and simplifying the structure. As shown in FIGS. 4A and 4B, a channel steel having a size of about 100 × 50 × 5 mm is used for the vertical beams 1 on both the left and right sides. A channel steel of about 100 × 50 × 5 mm is used for the central longitudinal reinforcing member 1 ′, and the front edges of both flanges are fixed to the face plate 3 by welding or the like.
[0023]
In the case of the embodiment shown in FIGS. 4A and 4B, the left and right vertical beams 1 and 1 are paired in parallel with a pair of channel steels 1a and 1a spaced apart by about 45 mm. The flange surface is fixed to the face plate 3 by means such as welding. The base end of a short cylindrical rod-shaped jack fixing member 5 is attached to the vertical beam 1 at the spaced groove portions 16 by a support shaft 9 so as to be freely rotatable when retracted and raised. As shown in detail in FIGS. 4B and 11, the jack fixing member 5 has a short cylindrical rod shape having an outer diameter of 40 mm and an effective length of about 65 mm, and a base portion thereof is supported by the support shaft 9. The support shaft 9 is supported at both ends by penetrating through the channel steel webs on both sides. In consideration of the stability and usability of the use of the jack fixing bracket 5, the jack fixing bracket 5 is attached to the front plate of the vertical beam at the portion where the jack fixing bracket 5 is attached, as shown in FIGS. The positioning plate 14 that holds the vertically raised posture is fixed. The positioning plate 14 has a lower base 14a having a semicircular shape with which the lower half of the vertically fixed jack fixing metal 5 abuts, and a parallel width (about 55 mm) slightly larger than the outer diameter (about 40 mm) of the jack fixing metal 5. ) Are formed. Therefore, the jack fixing metal 5 raised vertically as described above is stopped by the lower bottom portion 14a of the U-shaped notch 14b and keeps the standing state, and does not fall further downward. Also, when not needed, the jack fixing member 5 can be stored by falling down into the groove portion 16 of the longitudinal beam 1. The jack fixing member 5 is provided with a key groove 5a which communicates with the key groove 13a of the jack connector 13, and a wedge-shaped key 19 is inserted into the key groove 5a.
[0024]
The jack mounting structure for connecting the jack connector 13 of the support jack 12 for the cutting beam to the jack fixing fitting 5 as shown in FIG. 11 is also common to each earth retaining panel. Usually, the support jack 12 is configured such that by rotating a manual handle by hand, the two left and right shaft portions on a common center line expand and contract by a screw motion. Jack connectors 13 are attached to left and right shaft ends. The jack fixing fitting 5 and the jack connector 13 fitted thereto are connected by inserting an elongated plate-like wedge-shaped key 19 as shown in FIG. 11, and the connection is released by removing the wedge-shaped key 19.
[0025]
Reference numeral 21 shown in FIGS. 1, 6, and 9 indicates a hole for hanging the panel.
The configuration of each retaining panel will be described in more detail.
As shown in FIGS. 1 to 3, the retaining panel 10 with the blade positioned at the largest and the lowest level has a one-sided edge 11 along its entire length along the lower edge, so that the bite into the ground is good. Is formed. The height of the back is made 1.5 m as an example. The connection pins 7 connected to the upper panel are provided upward only at both corners of the upper edge (upper end positions of the vertical beams). When the medium-sized retaining panel 15 is stacked on the bladed retaining panel 10 so that the edge positions in the left-right direction coincide with each other, the middle-sized retaining panel 15 protrudes upward at both left and right ends of the upper edge of the bladed retaining panel 10. The upper half of the connecting pin 7 fits into the lower ends of the grooves of the left and right vertical beams of the middle-sized retaining panel, thereby preventing displacement of the panels. At this stage, the two can be connected in series by screwing a set screw through the through hole of the restraint plate below the vertical beam of the middle-scale earth retaining panel 15. Therefore, when pulling out the used earth retaining panel, both can be pulled out in series. However, instead of providing the connecting pins 7 at both ends of the upper edge of the bladed retaining panel 10, conversely, the connecting pins 7 are provided at both ends of the lower edge of the medium-sized retaining panel 15 to achieve the same purpose of connection. You can do it.
[0026]
The blade retaining panel 10 is formed to be about 3 m in length in the left-right direction of FIG. 1 as an example. The groove portions 16 spaced apart between the webs of the pair of channel steels 1a, 1a constituting the left and right vertical beams 1, 1 are provided at two locations of 250 mm and 500 mm downward from the upper edge of the retaining panel 10. At this position, a jack fixing bracket 5 is attached by a support shaft 9 so as to be able to move up and down freely. However, the mounting position and the number of locations of the jack fixing member 5 are not limited to those in this example, but are determined by design conditions that require support by a cut beam. For example, in FIG. 1, a positioning plate 14 or the like is prepared as a dummy for mounting the jack fixing bracket at an intermediate position between the upper and lower jack fixing brackets 5,5.
[0027]
On the face plate 3 of the retaining panel 10 with blades, a horizontal stiffening member 2 is fixed to the same inner surface on which the vertical beam 1 is provided in three steps by equally dividing the entire surface of the face plate 3 in the vertical direction. ing. However, up to the height range of the top level of the buried pipe, specifically, as shown in FIG. A flat iron plate 17 is arranged so as to close the recess between the eye and the second stage, and the upper and lower edges thereof are fixed by continuous welding to form a flat surface. As a result, the backfill soil is accumulated in the recess between the upper and lower lateral stiffening members 2 and 2, so that the resistance at the time of pulling out increases, and the recesses roll up the backfill soil at the time of pulling and disturb (unravel). The inconvenience does not occur.
[0028]
Next, the medium-scale retaining panel 15 used by being stacked on the retaining panel 10 with a blade will be described with reference to FIGS. The middle-sized retaining panel 15 is manufactured to have a height of about 1.0 m in height and, of course, has no edge at the lower edge. The lateral stiffening members 2 are fixed to the retaining panel 15 in two upper and lower stages (FIG. 7).
Also in the case of the earth retaining panel 15, restraining plates 4 and 4 are provided at positions to close the front opening of the groove at the upper and lower ends of the left and right vertical beams 1 and 1, and the upper ends of the left and right vertical beams 1 and 1 are provided. Or, if necessary, the connecting pin 7 described above can be provided at the lower end. The form and mounting structure of the connecting pin 7 are the same as those described with reference to FIGS. 5A and 5B.
[0029]
Because of the above configuration, this medium-sized retaining panel 15 is used by being stacked on the bladed retaining panel 10, and a plurality of such medium-sized retaining panels 15 are stacked as needed. The required earth retaining height can be obtained.
As described above, when the middle-scale retaining panel 15 is stacked on the retaining panel with blade 10 in a state where the edge positions in the left-right direction coincide with each other, the middle retaining panel 15 at the left and right ends of the upper edge of the retaining panel with blade 10 is provided. The upper half of the connecting pin 7 protruding upward fits into the lower end of the groove 16 of the left and right vertical beams 1, 1 of the middle-sized earth retaining panel 15. At this stage, the two panels can be connected in series by screwing the set screw 6 through the through hole 4a of the restraint plate 4 below the vertical beam of the middle-scale earth retaining panel 15. Therefore, when the used earth retaining panel is pulled out, both are pulled out in series. By connecting and stacking work using the connecting pins 7, the upper and lower retaining panels 15 and 10 are reliably prevented from being displaced in the inward (out-of-plane) and parallel directions perpendicular to the face plate 3. Is done.
[0030]
Next, the small-scale retaining panel 20 which is the smallest and is stacked on the medium-scale retaining panel 15 and positioned at the uppermost stage will be described with reference to FIGS. The small earth retaining panel 20 is manufactured to have a height of about 0.5 m and a length of about 3 m in the left-right direction. A restraint plate 4 is fixed at a position that closes the groove openings at the upper and lower ends of the left and right vertical beams 1 and 1.
[0031]
As shown in FIG. 6, this small-scale retaining panel 20 is placed on a medium-sized retaining panel 15 having connecting pins 7 protruding upward at both left and right ends of an upper edge, so that edges in the left-right direction coincide with each other. Stacking and connection are performed. As described above, the total height of the three types of retaining panels 10, 15, and 20 when they are stacked in series is 3.0 m. If necessary, a plurality of small-scale retaining panels 20 can be stacked to obtain a required retaining height. In such a case, the small-sized earth retaining panel 20 is used by providing the connecting pins 7 upward or downward at the ends of the left and right vertical beams 1, 1 at the upper edge or the lower edge of the small retaining panel 20.
[0032]
The support jacks 12, which support the earth retaining panels 10, 15, 20 sequentially stacked as described above from the inside like cut beams, are attached as shown in FIG.
Finally, FIGS. 13A to 13E show examples of different configurations of the longitudinal beam 1. This is because, as is clear from FIG. 4B, in the case of the vertical beam 1 in which two channel steels 1a and 1a are combined back to back, the processing of the end of the lateral stiffening member 2 is performed by the groove 1a. It must be done in a curved form from the flange to the contour of the web, which is very troublesome. On the other hand, the function required for the longitudinal beam 1 is sufficient if the groove 16 is formed to be capable of reinforcing the face plate 3 and accommodating the jack fixing member 5 and allowing the connecting pin 7 to be inserted and removed. Therefore, FIG. 13A shows a configuration in which two channel steels are arranged to face each other, and the end of the lateral stiffening member 2 is in contact with the flat web back surface of the channel steel. FIG. 13B shows a configuration in which two channel steels are arranged side by side, and the end of the lateral stiffening member 2 is also in contact with the flat web back surface of the channel steel. FIG. 13C shows a configuration in which one H-shaped steel is used, and the end of the lateral stiffening member 2 is in contact with the flat flange side surface of the H-shaped steel. FIG. 13D shows a configuration in which two angles are arranged to face each other, and the end of the lateral stiffening member 2 is in contact with the back surface of one flat side of the angle. FIG. 13E shows a configuration in which two angles are arranged side by side, and the end of the lateral stiffening member 2 is in contact with the back surface of one flat side of the angle. In any of the embodiments, the processing of the end of the lateral stiffening member 2 can be performed simply and linearly. In short, the longitudinal beam 1 can be configured using various shaped steels.
[0033]
[Effects of the present invention]
The earth retaining panel for the trench cut method according to the present invention has a simple structure, a small number of parts, is easy to manufacture and inexpensive, and can be installed and constructed with a small number of man-hours in use, and is efficient. Therefore, the overall evaluation is excellent in economic efficiency and inexpensive. Also, since the weight is reduced as much as possible, it is easy to use, the labor for use can be reduced, it is convenient for handling, and it is convenient for transportation and storage.
[Brief description of the drawings]
FIG. 1 is an elevation view of a retaining panel with blades according to the present invention.
FIG. 2 is a side view of a retaining panel with blades.
FIG. 3 is an enlarged view showing the details of the structure of a blade-sided retaining panel lateral stiffening member.
4A is a horizontal sectional view of a retaining panel with blades, and FIG. 4B is an enlarged view of a vertical beam portion.
FIG. 5A is an enlarged view showing an attached state of a connecting pin, and FIG. 5B is a sectional view of the same before.
FIG. 6 is an elevation view of a mid-size retaining panel.
FIG. 7 is a side view of a medium-sized retaining panel.
FIG. 8 is an enlarged cross-sectional view of a lateral stiffening member of the middle-sized earth retaining panel.
FIG. 9 is an elevation view of a small earth retaining panel.
FIG. 10 is a side view of the small earth retaining panel.
FIG. 11 is an elevation view showing a mounting structure of a support jack.
FIG. 12 is a view taken along line CC in FIG. 9;
13A to 13E are plan views showing different embodiments of the vertical beam.
[Explanation of symbols]
10 Retaining Panel with Blade 15 Medium Retaining Panel 20 Small Retaining Panel 1 Vertical Beam 16 Groove 2 Lateral Stiffening Member 3 Face Plate 4 Restraining Plate 7 Connecting Pins 2a, 2b Inclined Surface 2c Bent Surface 17 Iron Plate 12 Support Jack 13 Jack connector 5 Jack fixing bracket 1a Channel material

Claims (6)

In a retaining panel that is stacked and installed vertically along the side wall of the trench to be excavated by the trench cut method,
The size of the earth retaining panel, in vertical position along the side edges of the right and left side of the shape which is formed in the face plate (inner surface), is fixed a vertical beam having an open groove with the front of the inner surface side cage, lateral stiffening member is fixed to the left-right direction in the portion between the longitudinal beams of the left and right have the same inner surface of the face plate, a position for closing the opening of the groove the upper end of the vertical beam, a lower end and the constraining plate is fixed to the upper end of the longitudinal beam, at least one of the lower end, the connecting pin for connecting the upper and lower panels stacked is connected a set screw through the through hole formed in the constraining plate pin An earth retaining panel for a trench cut method, wherein the earth retaining panel is installed upward or downward with a configuration of being screwed into a screw hole provided in the panel. The lateral stiffening member of the face plate is formed by bending a steel plate into a substantially groove shape, and the inclined surface, the upper edge portion and the lower edge portion formed as the bent surface of the horizontal stiffening member correspond to the inner surface of the face plate. what is the contact is secured, and vertical reinforcing members on the inner surface of the right and left longitudinal beams also faceplate to an intermediate portion of fixed vertically, the inclined surface of the vertical reinforcing members the lateral stiffening member, a bent surface The retaining panel for a trench cut method according to claim 1, wherein the retaining panel is penetrated and covered with a web portion. The blade-retained retaining panel is characterized in that, of the lateral stiffening members of the face plate, the inner side surface of the height range from the cutting edge portion to the vicinity of the top level of the buried pipe is formed into a flat surface with an iron plate. An earth retaining panel for a trench cut method according to claim 1. The groove of the longitudinal beams, characterized in that the short bar-shaped jack fixing member for connecting the jack connector support jack Setsuhari substitute is mounted for undulating rotated by shaft, according to claim 1 earth retaining panel for the trench cut method. A vertical beam provided along the left and right side edges of the inner surface of the face plate is a configuration in which two channel steels or angles are arranged back to back or face to face or side by side, and are combined in parallel at intervals. The retaining panel for a trench cut method according to claim 1, wherein the flange of the section steel is fixed to the face plate. Contracture set screw through the through hole provided in Tababan are screwed into threaded holes provided in the connecting pin, characterized in that it is further through the distal end into the through hole of the face plate, according to claim 1 Earth retaining panel for trench cut method.

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