JP5976976B1 - Slide rail method built-in simple earth retaining method - Google Patents

Abstract

[Objective] To provide a construction method capable of easily and accurately positioning a first set of slide rail units in a slide rail type built-in simple earth retaining method. [Configuration] A ladder-shaped slide rail unit is formed by connecting slide rails, this slide rail unit is built in the excavation groove, a panel is inserted into the guide groove on the excavation direction side, and the excavation direction side end of the panel is inserted In the earth retaining method in which the guide groove of the next slide rail unit is inserted, the panel is inserted into the guide groove on the digging direction side of the slide rail unit, and the same operation is repeated thereafter, the supporting member is attached to the ground part. A step of using the set of panels to erect, a step of inserting the guide groove of the slide rail unit at the end opposite to the groove advancement side of the set of panels, and then the groove advancement side of the set of panels And a step of inserting a guide rail of a slide rail unit to be first built in the pre-excavated excavation groove. [Selection] FIG.

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an excavation groove earth retaining prior construction method and an apparatus therefor, and more particularly, to a slide rail type simple earth retaining method using a sheet-like sheet pile called a slide rail and an earth retaining panel.

  For waterworks and sewerage work involving small-scale trench excavation work, in order to prevent occupational accidents associated with sediment collapse during trench excavation work and in-groove work, a soil retaining support will be installed prior to the work in the trench. It is normal. As a method of installing this earth retaining support, there is a so-called slide rail type simple earth retaining method in which the support is assembled while repeating excavation of a groove and press-fitting of a sheet-like sheet pile.

  FIG. 1 thru | or FIG. 10 shows the procedure of this slide rail system built-in simple earth retaining method. A plurality of cutting beams 2 matching the cutter width are attached to the pair of slide rails 1 on the ground in advance, and the slide rail unit 5 is assembled. FIG. 1 shows a state in which the slide rail unit 5 is suspended and built in a pre-excavated excavation groove A with a backhoe (not shown).

  Next, as shown in FIGS. 2 and 3, the lower panel 3 suspended by a backhoe is inserted into the guide groove 1 a of one slide rail 1 in the direction of digging. Further, as shown in FIGS. 4 and 5, the lower panel 3 suspended by the backhoe is inserted into the guide groove 1 a of the other slide rail 1.

  Next, FIG. 6 shows a state in which the second set of slide rail units 5 is built in the pair of lower panels 3 to form a box shape. The inside of the box-shaped lower panel 3 is further excavated, the lower panel 3 is pushed in, and then the slide rail units 5 are pushed alternately. FIG. 7 shows a state in which the lower panel 3 is sunk to the vicinity of the ground surface by repeating this operation.

  FIG. 8 shows a state where the upper panel 4 is added to the lower panel 3 pushed to the vicinity of the ground surface. Then, the lower panel 3 and the upper panel 4 are pushed in, and then the slide rail units 5 are pushed alternately. FIG. 9 shows a state in which the upper panel 4 is sunk to the vicinity of the ground surface by repeating this operation.

  Thus, when the first set of support works is installed at a predetermined excavation depth, the lower panel 3 of the second set of support works is inserted into the guide groove 1a of the one end slide rail 1 of the first set of support works. Next, the slide rail unit is installed in the direction of excavation. The inside of the lower panel 3 shown in FIGS. 7 and 8 is further excavated, the lower panel 3 and the upper panel 4 are pushed in, and then the slide rail unit 5 is pushed in alternately. FIG. 10 shows a state in which the second set of earth retaining has been completed by repeating the work described in the explanation of FIG. 9 by repeating this work and sinking to a predetermined excavation depth. This work is repeated for the third and subsequent sets to complete the installation of the predetermined length.

  Patent Document 1 discloses a method for burying an anti-vibration block using a slide rail type built-in simple earth retaining method.

  In Patent Document 2, a support unit composed of a slide rail and a panel is suspended in a pre-dig groove, and then a panel is fitted in the guide groove of the slide rail so that the earth retaining support unit is sequentially connected to the excavation groove. Several methods and apparatus are disclosed.

JP 2009-180054 A JP 2006-70437 A

  In the above-described slide rail type built-in simple earth retaining method, it is important to suspend and build the first set of slide rail units shown in FIG. This is because the direction of excavation is determined by the slide rail unit built in first. Therefore, in order to dig in a predetermined direction, it is necessary to accurately determine the verticality of the slide rail unit to be built first and the directionality with respect to the digging direction.

  However, since there is a risk of the earth wall collapsing, it is not possible for an operator to enter the excavation groove where earth retaining is not performed. Therefore, delicate positioning is performed by operation of the box hoe and manual guidance of the slide rail unit by an operator on the ground. However, such work is difficult and accurate positioning is difficult.

  Then, an object of this invention is to provide the construction method which can perform positioning of the 1st set of slide rail unit easily and correctly in the slide rail system built-in simple earth retaining method.

  The configuration of the present invention that achieves the above object is as follows.

  (1) According to the first aspect of the present invention, a pair of slide rails each having a required length in which guide grooves are formed in the longitudinal direction of both the front and rear members, and one side surface in a direction intersecting with the guide groove forming portion A ladder-shaped slide rail unit is formed by connecting more than one stretchable beam, and this first set of slide rail units is built in a pre-excavated excavation groove, and a panel is installed in the guide groove on the excavation direction side. Insert the guide groove of the second set of slide rail units into the digging direction side end of the panel, insert the panel into the digging direction side guide grooves of the second set of slide rail units, and repeat the same operation thereafter In the slide rail method of simple earth retaining method for retaining earth, a set of panels is erected on the ground using a support member, and a pre-excavated excavation is made at the end of the groove on the side of this set of panels. First built in the groove It constituted by inserting a guide groove of the slide rail units writing.

  (2) In the invention according to claim 2, a pair of slide rails each having a required length in which guide grooves are respectively formed in the longitudinal direction of the front and rear members, and one side surface in a direction intersecting the guide groove forming portion A ladder-shaped slide rail unit is formed by connecting more than one stretchable beam, and this first set of slide rail units is built in a pre-excavated excavation groove, and a panel is installed in the guide groove on the excavation direction side. Insert the guide groove of the second set of slide rail units into the digging direction side end of the panel, insert the panel into the digging direction side guide grooves of the second set of slide rail units, and repeat the same operation thereafter In the simple railing method with built-in slide rail method, the process of standing a set of panels on the ground using a support member and the end of the set of panels opposite to the groove digging side , Slide And a step of inserting a guide rail of a slide rail unit first built in a pre-excavated excavation groove at the end of the pair of panels on the groove excavation side. .

  (3) The invention described in claim 3 is the slide rail type built-in simple earth retaining method according to claim 1 or 2, wherein the support member is provided with two column members standing on the bottom plate.

  It will be outlined with reference to the drawings how the present invention configured as described above works to solve the problems.

  In the construction method according to claim 1, before the slide rail unit is built in the pre-excavated excavation groove, as shown in FIG. A set of guide members formed by the panel 10 erected using 20 is installed. In addition, as shown in FIG. 13, the guide groove 1a of the slide rail 1 constituting the slide rail unit 5 to be first built in the excavation groove A is inserted into the excavation direction side end portion of the panel 10 to perform the construction work. It is.

  As described above, it is necessary to accurately position the slide rail unit 5 that is built first in the vertical direction and the directionality relative to the direction of excavation.

  Therefore, the panel 10 constituting the guide member is erected by the support member 20 so that the end portion in the excavation direction side is vertical, but this operation can be performed on the ground instead of in the excavation groove. It is possible to easily perform the suspension by suspending by the hand and the manual guidance by the worker. Similarly, positioning the panel 10 accurately in the excavation direction can be performed not on the excavation groove but on the ground, and can be performed easily and accurately.

  In the construction method according to claim 2, before the slide rail unit is built in the pre-excavated excavation groove, as shown in FIG. A pair of guide members formed by inserting the guide grooves 31 of the slide rail 30 constituting the slide rail unit 40 is installed at the opposite end of the panel 10 in the digging direction. In addition, as shown in FIG. 17, the guide groove 1a of the slide rail 1 constituting the slide rail unit 5 that is first built in the excavation groove A is inserted into the excavation direction side end portion of the panel 10 to perform the installation work. It is.

  As described above, it is necessary to accurately position the slide rail unit 5 that is built first in the vertical direction and the directionality relative to the direction of excavation.

  Therefore, the panel 10 constituting the guide member is erected by the support member 20 so that the end portion in the excavation direction side is vertical, but this operation can be performed on the ground instead of in the excavation groove. It is possible to easily perform the suspension by suspending by the hand and the manual guidance by the worker. Similarly, positioning the panel 10 accurately in the excavation direction can be performed not on the excavation groove but on the ground, and can be performed easily and accurately.

  Further, by inserting the guide groove 31 of the slide rail 30 constituting the slide rail unit 40 into the end of the upright panel 10 in the direction of excavation, the pair of panels 10 are accurately matched to the cutter width of the excavation groove. Can be installed. By inserting and fitting the guide groove 31 of the slide rail 30 constituting the slide rail unit 40 into the panel 10, it is possible to stably support the pair of panels.

  As described above, the guide member including the pair of panels 10 and the slide rail unit 40 can be easily assembled on the ground instead of in the excavation groove, and is first built in the excavation groove A with accurate positioning of the panel 10. Since the slide rail unit 5 to be inserted can be accurately positioned, the present invention provides a method for easily and accurately positioning the first set of slide rail units 5 in the slide rail type built-in simple earth retaining method. It becomes possible to do.

Process explanatory diagram of slide rail method built-in simple earth retaining method Process explanatory diagram of slide rail method built-in simple earth retaining method Process explanatory diagram of slide rail method built-in simple earth retaining method Process explanatory diagram of slide rail method built-in simple earth retaining method Process explanatory diagram of slide rail method built-in simple earth retaining method Process explanatory diagram of slide rail method built-in simple earth retaining method Process explanatory diagram of slide rail method built-in simple earth retaining method Process explanatory diagram of slide rail method built-in simple earth retaining method Process explanatory diagram of slide rail method built-in simple earth retaining method Process explanatory diagram of slide rail method built-in simple earth retaining method Process explanatory drawing of this invention Process explanatory drawing of this invention Process explanatory drawing of this invention Process explanatory drawing of this invention Process explanatory drawing of this invention Process explanatory drawing of this invention Process explanatory drawing of this invention Process explanatory drawing of this invention Perspective view of slide rail unit Perspective view of support member

Hereinafter, an embodiment of a preferred invention will be outlined with reference to the drawings. The embodiment of the present invention is not limited to the following embodiment, and can take various forms as long as they belong to the technical scope of the present invention. The same reference numerals are used for the same members as in the conventional example.

 The present invention relates to the positioning of a slide rail unit to be first built in a digging groove in a general slide rail type built-in simple earth retaining method described in the background section.

  In the first aspect of the present invention, first, as shown in FIG. 11, a pair of panels 10 are not shown on a pair of support members 20 previously placed on the ground surface at intervals corresponding to the cutter width of the excavation groove. Suspend with, etc., and stand up.

 FIG. 12 shows a state where the excavation groove is pre-excavated in the vicinity of the guide member 51 formed of the pair of panels 10 formed as described above, or the guide member 51 is installed in the vicinity of the excavated excavation groove. .

  From this state, as shown in FIG. 13, the slide rail unit 5 used in the general slide rail type erection simple earth retaining method described in the background art is fitted into the end portion of the panel 10 in the excavation direction, and the excavation groove A is inserted. It is to be built. Specifically, the slide rail unit 5 is suspended by a backhoe or the like, and the end portion of the panel 10 is inserted into the guide groove 1 a of the slide rail 1 and fitted.

  With the above steps, the work of building the first set of slide rail units 5 into the excavated groove A is completed. In the following, the earth retaining work is completed using the general slide rail type built-in simple earth retaining method outlined in the background art with reference to FIGS. 1 to 10.

  In the invention described in claim 2, first, as shown in FIG. 11, a pair of panels 10 are not shown on a pair of support members 20 previously placed on the ground surface at intervals corresponding to the cutter width of the excavation groove. Suspend with, etc., and stand up.

  Next, as shown in FIG. 15, a ladder-like slide rail unit 40 formed by attaching a plurality of beams 2 matching the cutter width to the slide rail 30 is fitted into the opposite end of the panel 10 in the direction of digging. More specifically, the panel 10 is fitted into the guide groove 31 of the slide rail 30.

 A state in which the excavation groove is pre-excavated in the vicinity of the guide member 50 formed of the slide rail unit 40 and the panel 10 formed as described above, or the guide member 50 is installed in the vicinity of the excavated excavation groove is illustrated. 16.

  From this state, as shown in FIG. 17, the slide rail unit 5 used in the general slide rail type erection simple earth retaining method described in the background art is fitted into the end portion of the panel 10 in the excavation direction, and the excavation groove A is inserted. It is to be built. Specifically, the slide rail unit 5 is suspended by a backhoe or the like, and the end portion of the panel 10 is inserted into the guide groove 1 a of the slide rail 1 and fitted.

  With the above steps, the work of building the first set of slide rail units 5 into the excavated groove A is completed. In the following, the earth retaining work is completed using the general slide rail type built-in simple earth retaining method outlined in the background art with reference to FIGS. 1 to 10.

  As shown in FIG. 19, the slide rail unit 40 has a pair of slide rails 30 each having a required length in which guide grooves 31 are formed in the longitudinal direction of both the front and rear members in a direction intersecting the guide groove forming portion. One side surface is connected to each other by two or more telescopic cutting beams 2 to form a ladder shape.

  That is, the slide rails 30 and 30 are assembled in a ladder shape by connecting the side surfaces 32 not provided with the guide grooves 31 to each other and connecting at least two cut beams 2 at a predetermined interval. is there.

  The cutting beam 2 used here has a turnbuckle structure, and both ends are fixed to the side surfaces 32, 32 of the slide rails 30, 30. In addition, a jack-type cut beam can be used instead of the turnbuckle structure.

  Further, a mounting bracket 33 is provided at a predetermined position of the slide rail 30, and the base end of the cut beam 2 is fitted into the mounting bracket 33 so that it can be detachably fixed by a pin or the like. .

  The slide rail 30 is obtained by shortening the height in the longitudinal direction of the slide rail 1 in the conventional example. That is, it is formed in a length that can support the panel 10 by combining structural materials, and the guide grooves 31 are formed on both front and rear sides in use. In this embodiment, the lip groove steel is formed into an integral shape by superimposing the web surface side, and the inside thereof is formed as the guide groove 31. Accordingly, the guide groove 31 has a structure in which an opening is formed between the lip portions 31a and 31a. The slide rail 30 is not limited to such an embodiment. The required cross-sectional strength can be obtained by using other members, and the end portion of the panel 10 to be described later is provided at either the front-rear position or the front-rear position. As long as a guide groove that can be fitted and held is formed.

  The panel 10 can use a retaining panel used for a general retaining support, and has a composite structure made of a steel material having a strength corresponding to a required earth pressure.

  As shown in FIG. 20, the support member 20 is obtained by fixing two vertical plates 22, 22 spaced apart from each other to a bottom plate 21 in a vertical direction with a required interval for fitting the panel 10. Of course, this is only an example, and any form can be used as long as the panel 10 can be fitted and erected. For example, the bottom plate may be provided with a plurality of support bars standing in the vertical direction.

10. Panel 20 ... Support member 30 ... Slide rail

Claims (3)

A pair of slide rails with required lengths, each of which has a guide groove formed in the longitudinal direction of the front and rear surfaces, and one side surface in a direction intersecting the guide groove forming portion are connected to each other by two or more telescopic beams. A ladder-shaped slide rail unit is formed, and the first set of slide rail units is built in a pre-excavated excavation groove, a panel is inserted into the guide groove on the excavation direction side, and the excavation direction side end of the panel is inserted. Insert the guide groove of the second set of slide rail units, insert the panel into the guide groove on the digging direction side of the second set of slide rail units, and then repeat the same operation to fix the soil by using the slide rail method. In the fastening method,
A set of panels is erected on the ground using a support member,
A slide rail type built-in simple earth retaining method characterized by inserting a guide groove of a slide rail unit to be built first into a pre-excavated excavation groove at the end of a set of panels that have been erected on the groove excavation side. A pair of slide rails with required lengths, each of which has a guide groove formed in the longitudinal direction of the front and rear surfaces, and one side surface in a direction intersecting the guide groove forming portion are connected to each other by two or more telescopic beams. A ladder-shaped slide rail unit is formed, and the first set of slide rail units is built in a pre-excavated excavation groove, a panel is inserted into the guide groove on the excavation direction side, and the excavation direction side end of the panel is inserted. Insert the guide groove of the second set of slide rail units, insert the panel into the guide groove on the digging direction side of the second set of slide rail units, and then repeat the same operation to fix the soil by using the slide rail method. In the fastening method,
A set of panels is erected on the ground using a support member,
Insert the guide rail of the slide rail unit into the end of the set of panels that have been erected on the opposite side of the groove digging side,
Next, a slide rail type built-in simple earth retaining method, wherein a guide groove of a slide rail unit to be built first in a pre-excavated excavation groove is inserted into an end of the pair of panels on the groove excavation side.   The slide rail type built-in simple earth retaining method according to claim 1 or 2, wherein the support member is a member in which two pillar members are erected on the bottom plate.

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