JPH1046580A - Earth retaining temporarily arranged form and underground piping execution work method using it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a work form and a work method by which a collapse of sediment can be reliably prevented and a movement can be smoothly performed in lightweight and underground piping work of a prescribed section can be extremely efficiently and safely performed and piping work can be performed with every short section without taking a place so much. SOLUTION: An earth retaining temporarily arranged form vertically moves along the inside of panel groups 10 whose plural panels 2 are erected on the left and right both sides of a long groove by excavating the ground surface for piping, and holds an interval between these left and right panel groups 10. In that case, hinge parts 19 are respectively arranged in a pair of left and right lower frames 3 and 3 extending in the longitudinal direction, a pair of left and right upper frames 3 and 3 vertically arranged at intervals from these respective frames 3 and either of these upper or lower left and right frames 3, and left and right-front and rear respective joints 4 whose one ends are joined to the hinge parts 19 and other ends are joined to either of other upper or lower left and right frames 3, respectively, lower jacks 5 and 5 which extend and contract the mutual left and right lower frames 3 and 3 and are arranged in front-rear positions and upper jacks 5 and 5 which extend and contract the mutual left and right upper frames 3 and 3 and are arranged in front-rear positions, are integrally assembled in a block shape, and are made freely suspendible. Underground piping is also laid by using this form.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a temporary retaining frame and a temporary retaining frame used for preventing a collapse of a trench due to a collapse of earth and sand during a work in an excavation trench for pipes such as water supply and sewerage pipes. The present invention relates to a buried pipe construction method using a frame type.

[0002]

2. Description of the Related Art In order to bury a conventional pipe of this kind in the ground, first, a pipe installation site is dug up by an excavating machine or the like, a predetermined groove is provided in advance, and a panel group of a plurality of panels is sequentially arranged on both sides of the groove. Embedding to form a deep groove deeper,
There has been a construction method in which gravel or the like is spread over the deepest portion of the deep groove, piping is carried out, earth and sand for pipe fixing are placed on the piping, and then a panel group is pulled up to bury the groove. But,
With this construction method, the left and right panel groups that are deep trenches are very weak in the left and right pressure resistance, and often this panel group is deformed toward the center of the deep trench and the surrounding earth and sand is put into the deep trench, and there is a risk that the worker will be buried. there were. Therefore, a method has been adopted in which a crosspiece is passed on the left and right sides of the deep groove between the panel groups, and a beam is further inserted between the crosspieces to prevent collapse of earth and sand in the deep groove.

[0003]

In such a conventional method, it is difficult to attach the crossbars and beams, and the left and right panel groups, crossbars and beams cannot be removed until a long piping is completed. In places where excavation and plumbing are performed, traffic was a major obstacle until the plumbing work was completed. Therefore, a very large one-piece metal panel is provided on the left and right, temporary retaining frames for fixing the jacks are provided between the left and right, and the temporary retaining frames are sequentially arranged side by side, and further stacked. There is also a method of piping after excavating the soil in the retaining temporary frame, but in this method, the weight of the retaining temporary frame is very bulky, and it is difficult to pull up the temporary retaining frame after burying the pipe, There is a problem that it cannot be moved, and it cannot cope especially on narrow roads or roads with heavy traffic. In addition, there is a problem that the panel of the temporary retaining frame is very heavy, the assembling work is troublesome, and the working efficiency is significantly low.

The present invention has been made to solve the above-mentioned problems of the prior art, and has a simple structure and reliably prevents the collapse of earth and sand. Underground piping work in a predetermined section can be performed extremely efficiently. In addition, since one or two or three pipes can be sequentially piped for each unit block in the pipe work, a temporary retaining frame type for earth retaining, which can be installed without taking up space, and which can easily embed the pipes, and the use thereof. To provide a buried piping method.

[0005]

A temporary retaining frame mold 1 according to the present invention is provided along a panel group 10 in which a plurality of panels 2 are erected on both right and left sides of a long groove excavated for piping. It is a temporary retaining frame type for retaining the earth, which moves up and down to maintain the space between the left and right panel groups 10, and a pair of left and right lower frames 3, 3 extending in the front-rear direction, and vertically spaced from each frame. A pair of left and right upper frames 3, 3 and a hinge portion 19 is provided on each of the upper and lower left and right frames, one end is connected to the hinge portion, and the other end is connected to any of the upper and lower other left and right frames. Left and right joints 4, lower jacks 5, 5 arranged at front and rear positions to extend and contract between left and right lower frames 3, 3, and front and rear positions arranged at right and left upper frames 3, 3 to extend and contract Upper jack 5,5 The integrated assembled into blocks, which is constituted freely suspended.

In the buried piping method using the temporary retaining frame mold, one side of a plurality of panels 2... Is sequentially installed on both sides of the temporary retaining frame mold 1 in the longitudinal direction. A step of forming the left and right panel groups 10 and 10 and integrating them with the frame die 1 and a step of placing the soil retaining temporary frame die and the left and right panel groups 10 and 10 from above in a shallow groove 7a excavated in advance. A step of releasing the connection between the left and right panel groups 10 and the frame die 1 and driving the panel groups 10 and 10 into the ground; and a temporary retaining frame located between the driven panel groups 10 and 10. A step of digging down the soil located below the mold 1 to sequentially form the deep groove 7, a step of driving each panel group 10, 10 deeper, and a step between the left and right frames of the temporary retaining frame mold 1 toward the left and right panel groups. The process of making it stretched and the piping to the excavated deep groove 7 And performing a fill for the tube fixed,
A step of loosening the space between the left and right frames 3 and 3 of the retaining frame temporary mold 1 to raise the panel group 10 above the embankment, and a step of lifting the retaining frame temporary frame mold 1 to a required height position;
Connecting each panel 2 to the temporary retaining frame mold 1 again; moving the combined panel group and the temporary retaining frame mold into a shallow groove at the next work position; The piping of a predetermined length section is performed while sequentially repeating the step of burying the already-formed groove.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In carrying out the present invention, each of the panels 2 is provided with a connecting vertical groove 8 extending vertically, and each of the upper and lower frames 3 is formed in a longitudinal direction. The panel 2 and each frame 3 are connected and fixed through the two grooves 8 and 11 for use in the temporary retaining frame mold. A pair of rods 61, such as rods and poles, is erected from the four sides with respect to the upper frame 3, 3 which is a pair of right and left. By attaching the support legs 6 on which the casters 22 are fixed to the temporary frame die 1 so that the entire temporary frame die 1 can be moved in the front-rear direction, the temporary frame die can be moved smoothly and quickly after the piping work.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. The temporary retaining frame mold 1 shown in FIG. 1 forms panel groups 10, 10 in which one side of a plurality of panels 2... And a pair of left and right lower frames 3, 3 that move up and down along the panel groups 10, 10, and a pair of left and right upper frames 3, 3, and a pair of left and right connecting upper and lower portions of the lower and upper frames. Four joints 4,4,4,4 arranged in four places in front and back and four jacks 5,5,5 arranged in four places in up, down, front and back to expand and contract the interval width of the left and right frames 5 and four small projections 62 welded to the upper surfaces near both ends in the longitudinal direction of the left and right upper frames 3 and 3.

[0009] The four small projections 62 ...
A pin hole is bored in the lateral direction, and a hook at the lower end of a hanging chain or a hanging wire is inserted into the pin hole and connected so that the entire temporary retaining frame mold 1 can be lifted and suspended. is there.

The supporting means of the temporary retaining frame mold 1 shown in the embodiment is constructed by connecting the lower end of a rod 61 made of a pipe to each of these small projections 62 and projecting upward. A cylindrical body 63 connected to the rod member 61 with a pin, an outer frame 64 provided with a caster 22 and a vertical expansion / contraction adjustment handle 23 provided below, and a cylindrical body 63 A support leg 6 composed of a horizontal frame 65 connecting the outer frame 64 to the outside of the panel group and passing it laterally outward is connected, and the frame die 1 is supported by the support leg 6 and the rod 61. It is like that.

The panel 2 erected in the pipe groove 7 is formed of a metal material such as iron, aluminum or the like. As shown in FIG. 7 and FIG. A channel section 9 having a channel shape in cross section having a slide groove 8 in the vertical direction is provided. The panel 2 is arranged side by side with one side end thereof superimposed on the other side end of the next panel 2 of the same shape to form a panel group 10.

As shown in FIGS. 7 and 8, each of the left, right, upper and lower frames 3 of the retaining frame mold 1 extends in the front-rear direction (the width direction of the panel group). Lower jacks 5 and 5 and upper jacks 5
5, the distance between the left and right frames 3, 3 is adjusted to expand and contract. Each of these frames 3 ...
As shown in FIG. 8, a side wall plate 1 holding an elongated hole 11 for penetrating the tip of a slide lock bolt to be described later at a position deviated from a surface (outside surface) near the panel group 10 on the upper surface.
2 are provided along the longitudinal direction of the frame. The left and right lower frames 3 and the left and right upper frames 3 have the same shape. As shown in FIG. 8, a slide lock bolt 13 for connecting the frame 3 and the panel group 10 has a wedge hole 15 formed at the center of a shaft portion 14 and a slide groove 8 of the panel 2 at a tip portion. And a slide plate 16 that slides.

The slide lock bolt 13 is mounted on the slide plate 16 in the slide groove 8 of the panel 2.
After the insertion, a wedge 18 is inserted into the wedge hole 15 of the slide lock bolt 13 in a state where the washer 17 is passed through the washer 17 at the tip of the shaft portion 14 penetrating the elongated hole 11 of the frame 3 and the washer is brought into contact with the side wall plate 12. Drive in. Thus, each panel 2... And each frame 3 are connected and fixed.

In this manner, the slide lock bolts 13 are attached to the respective panels 2.
8, the individual panels 2 and the frame 3 are connected and fixed, and the slide lock bolts 1 are fixed.
By loosening the wedge 18 of each of the frames 3, each frame 3 and each panel 2 can move up and down along the relative sliding contact surface. A lock bolt 13 for sliding and a washer 17 for connecting the panel 2 to each frame 3.
The wedges 18 are arranged for each panel and for each frame. This lock bolt 13
Instead of the wedge 18, a screw may be formed on the shaft of the slide lock bolt 13 and screwed with a fastening nut.

Each of the left, right, upper and lower frames 3 shown in the embodiment
The jacks 5 arranged in between are all the same turnbuckle type jacks, which can be separately extended and retracted between the front and rear positions of the lower frame and the front and rear positions of the upper frame. It is. Therefore,
The temporary retaining frame mold 1 can adjust the interval between the left and right frames in accordance with the width between the left and right of the groove 7 excavated by the expansion and contraction of the jacks 5 at the front and rear and the front and rear. It goes without saying that the jack 5 may employ a hydraulic, hydraulic or pneumatic jack.

The joints 4 connecting the upper and lower frames 3 have the same structure. As shown in FIGS. 1 and 7, the joint 4 is vertically movable between a lower joint member 20 hinged to a hinge member 19 projecting from the upper surface of each lower frame 3 and the lower joint member 20. And an upper joint member 21 connected to the lower surface of the upper frame 3. The temporary retaining frame mold 1 adjusts the distance between the lower frame 3 and the upper frame 3 by means of these telescopic adjustment joints 4 and expands and contracts the jacks 5 so that each frame 3.
Can be protruded toward the panel side, or can be inclined toward the center side of the groove 7 to be separated from the panel side.

The support legs 6 with the casters 22 connected to the upper portions of the rods 61 projecting upward from the upper surface of the upper frame 3 are all of the same shape. When each jack 5 is extended and each frame 3 is stretched toward the panel side, each caster 22 is connected to a panel 29 as shown in FIG.
To move the entire temporary retaining frame mold 1 toward the front of the next operation by moving the caster 5 toward the outside of the groove so as to move away from the groove, and moving the caster 22 toward the front of the next operation, FIG. It is used by moving in the front-rear direction as shown in FIG.

In the piping method using the temporary retaining frame mold 1, a slide plate 16 of a lock bolt 13 for slide is inserted into a slide groove 8 of each panel 2 in advance, and a tip of the lock bolt for slide is connected to a frame. 3, the panel and the frame are connected to each other by a washer 17 and a wedge 18 through the long hole 11 of the side wall plate 12, and each jack 5 is stretched and connected so that the panel and the frame are not separated from each other, as shown in FIG. Group 1 with a crane etc. in the shallow groove 7a excavated as
Place the temporary retaining frame mold 1 together with 0. After the panel group 10 is driven into each of the left and right sides of the shallow groove 7a excavated earlier, the temporary retaining frame mold 1 is inserted between the panel groups, and the panel and the frame are joined by the lock bolts for sliding. You may do so.

Next, after the shallow groove 7a is dug deeper to form the deep groove 7, each of the frames 3 above the temporary retaining frame 1
Of each wedge 18 (FIG. 2). By removing the wedge 18 and contracting the upper jack 5, FIG.
As shown in (2), the left and right frames and the left and right joints are inclined toward the center from the left and right, so that the frame and the panel are separated from each other, and the panel can be more easily driven.

Next, after the panels are sequentially driven deeper, each caster is pulled in a direction away from the left and right sides of the groove 7, and each jack 5 is extended to extend each frame 3 together with the panel 2 to the left and right side walls of the groove 7. (Fig. 4). By this operation, since the panel is pressed outward from the groove, the outside earth and sand does not enter the groove and is buried. Further, in this state, in order to stabilize the pipe P for laying at the deepest portion in the groove 7, the earth and sand are spread and pressurized, and then the pipe is laid thereon, and the earth and sand for fixing the laying arrangement P is spread thereon.

After this operation, each jack 5 of the temporary retaining frame mold 1 was slightly loosened to ease the connection between the temporary retaining frame mold and the panel, and each panel was pulled out above the soil in the groove 7. When the wedge 18 is driven into the wedge hole 15 of the sliding lock bolt 13 of each frame 3 on the upper part of the temporary soil retaining frame mold 1 in the state, the panel and the frame are joined. Then, the trajectory of the position of each caster 22 is corrected in the front-rear direction (FIG. 5).

Next, the panel groups 10 and 10 are moved together with the temporary retaining frame mold 1 along the casters in the front-rear direction to the next work position in front, and horizontally moved into the next shallow groove 7a (FIG. 6). In this way, the previous work site where the piping is completed is backfilled. In this way, piping is sequentially performed in a predetermined length section.

In the above embodiment, the frame 3 is made of a rigid rectangular tube, and the side wall plate 12 for forming the horizontally long hole 11 for panel connection is provided on the upper surface thereof along the longitudinal direction of the frame. The reason is that, when excavating earth and sand with a backhoe or excavator, if the slide lock bolt 13 protrudes from the frame 3 toward the inside of the excavation groove 7, the excavator or the like may be caught by the bolt 13 and hinder the work. This is a consideration for prevention.

The embodiment shown in FIG. 9 shows another embodiment of the frame 3. In the embodiment, the frame 3 is composed of two rectangular tubes 31, 31 vertically separated by a predetermined interval. Place,
These are connected by a connecting plate 32 at both ends in the longitudinal direction to be integrated, and the washer 17 for the lock bolt 13 is formed into a U-shape having a concave portion into which the recess is inserted into the space. It is designed to be able to be tightened.

The embodiment shown in FIG. 10 shows another embodiment of the frame 3. The frame 3 of this embodiment has two frames as in the case of the embodiment shown in FIG. Are vertically arranged at predetermined intervals, and are connected and integrated by connecting plates 32 at both ends in the longitudinal direction, and another long tube is provided on the lower surface side of the lower tubular body 31. The plates 33 are integrally connected to each other so as to project from the inner surface of the lower tube 31 by a required width. Thus, the nut of the lock bolt 13 is tightened within the range of the protruding width of the long plate 33.

[0026]

As described above, the temporary frame type for retaining the soil according to the present invention has panels erected on both left and right sides of a long groove excavated for piping, and holds between the left and right panel groups. A pair of left and right lower frames that move up and down along the inside of the panel group and extend in the front-rear direction, and a pair of left and right upper frames separated from each other by up and down. And left and right, front and rear joints with one end connected to each hinge at the lower left and right frames, and one end connected to the hinges, and the other end connected to each upper left and right frame, and between the left and right lower frames The front and rear lower jacks to be made and the front and rear upper jacks that expand and contract between the left and right upper frames are integrated into one structure, so the entire temporary retaining frame type for earth retaining is separate from the panel group, or the panel Optionally with a group It can be moved, and even when in use, it can be disconnected from each panel and only the panels can be driven into the ground individually and pulled out from the ground, and apart from the panel group, the vertical spacing between frames can be adjusted In addition, since it is possible to freely adjust the interval in the width direction and the angle, etc., there is a remarkable effect that the burying work of the pipe can be performed efficiently and smoothly.

Further, in the method of burying piping using the temporary retaining frame type, the left and right panel groups in which one side of a plurality of panels are sequentially overlapped to form a side-by-side panel are formed. A step of integrating with the frame form, a step of placing the retaining frame temporary frame form and the left and right panel groups from above in a shallow groove excavated in advance, and digging down the soil in the retaining form temporary frame form into a deep groove. Process, a step of driving the panel group further deeply, a step of stretching the left and right frames of the temporary retaining frame mold toward the left and right panel groups, and a step of piping in a deep groove and embedding for pipe fixing. And a step of loosening the space between the left and right frames of the retaining frame temporary frame mold and lifting the panel group above the embankment, and a step of combining each panel with the retaining frame temporary frame mold,
The step of moving the combined panel group and the temporary retaining frame mold into the shallow groove in the front and burying the deep pipe already formed in the rear is repeated to perform predetermined piping, so that the inside of the excavation groove is That the burial of earth and sand can be reliably prevented and plumbing can be performed efficiently in a safe condition, and especially when plumbing on narrow roads or roads with heavy traffic, a long section of construction work is required. Therefore, there is an advantage that the piping work can be sequentially performed for each short section.

[Brief description of the drawings]

FIG. 1 is a front view showing a state in which a temporary retaining frame mold and a panel are put in a groove.

FIG. 2 is a front view showing a state in which a trench in a temporary retaining frame mold is excavated to be a deep trench.

FIG. 3 is a front view showing a state where a temporary retaining frame type jack for earth retaining is contracted.

FIG. 4 is a front view showing a state where a temporary retaining frame type jack for earth retaining is extended.

FIG. 5 is a front view showing a state in which piping is provided in a groove of a temporary retaining frame type.

FIG. 6 is a side view showing a state in which the temporary retaining frame and the panel are moved forward.

FIG. 7 is a perspective view showing a temporary retaining frame mold and a panel.

FIG. 8 is a perspective view of a main part showing a temporary frame type frame for retaining the earth and a panel.

FIG. 9 is a perspective view of a portion corresponding to FIG. 8 showing another embodiment.

FIG. 10 is a perspective view of a portion corresponding to FIG. 8 showing still another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Temporary frame type for earth retaining 2 Panel 3 Frame 4 Joint 5 Jack 6 Support leg 7 Groove 7a Shallow groove 8 Sliding groove 9 Guard part 10 Panel group 11 Long hole 19 Hinge part

Claims (4)

[Claims] 1. A panel group (10) in which a plurality of panels (2)... Are erected on both left and right sides of a long groove excavated for a pipe, and move up and down along the inside of the panel group (10). A pair of left and right lower frames (3), (3) extending in the front-rear direction, and a pair of right and left upper frames vertically spaced from each other. (3), (3)
Left and right and front and rear joints having one end connected to the hinge portion and the other end connected to the other upper or lower left or right frame, respectively. (4) ... and the left and right lower frames (3),
(3) Lower jack located at the front and rear position to expand and contract the space
(5), (5) and upper jacks (5), (5) arranged at the front and rear positions to extend and contract between the left and right upper frames are assembled into a block shape, integrated, and configured to be freely suspended. Temporary frame type for earth retaining. 2. A panel group (10) in which a plurality of panels (2)... Are erected on both left and right sides of a long groove excavated from the ground for piping, and move up and down along the inside of the panel group (10). A pair of left and right lower frames (3), (3) extending in the front-rear direction, and a pair of right and left upper frames vertically spaced from each other. (3), (3)
Left and right and front and rear joints having one end connected to the hinge portion and the other end connected to the other upper or lower left or right frame, respectively. (4) ... and the left and right lower frames (3),
(3) Lower jack located at the front and rear position to expand and contract the space
(5), (5) and the upper jacks (5), (5) arranged at the front and rear positions to expand and contract between the left and right upper frames are assembled in a block shape and integrated to be freely suspended, The panel (2) is provided with connecting vertical grooves (8) extending vertically, and the upper and lower frames (3) are provided with connecting horizontal grooves (11) extending longitudinally. Grooves (8), (1
A temporary frame type for earth retaining, wherein each panel (2) and each of the upper, lower, left and right frames (3) are connected and fixed via 1). 3. A panel group (10) in which a plurality of panels (2)... Are erected on both left and right sides of a long groove excavated for the piping, and move up and down along the inside of the panel group (10). A pair of left and right lower frames (3), (3) extending in the front-rear direction, and a pair of right and left upper frames vertically spaced from each other. (3), (3)
Left and right and front and rear joints having one end connected to the hinge portion and the other end connected to the other upper or lower left or right frame, respectively. (4) ... and the left and right lower frames (3),
(3) Lower jack located at the front and rear position to expand and contract the space
(5), (5) and the upper jacks (5), (5) arranged at the front and rear positions to expand and contract between the left and right upper frames are assembled in a block shape and integrated to be freely suspended, The panel (2) is provided with a connecting vertical groove (2a) extending vertically, and the upper frame (3), (3) has a rod member protruding upward.
(61) is erected, and the rod (61) extends laterally and outwardly above the panel group (10), and a caster (2
A temporary retaining frame type for retaining a ground, wherein a supporting leg 6 to which 2) is fixed is connected and fixed. 4. A panel group (10) is formed on both sides of the temporary retaining frame mold (1) in the longitudinal direction in such a manner that one side of a plurality of panels (2)... And a step of integrating the frame type (1) with the temporary frame type (1) for retaining the soil and the left and right panel groups (10) and (10) from above in a shallow groove (7a) excavated in advance. The process of placing, these left and right panels (2) ... and the frame type (1)
A step of driving the panel groups (10) and (10) into the ground by disconnecting the connection with the ground, and a temporary retaining frame mold (1) located between the driven panel groups (10) and (10). Excavating the soil located below the bottom and sequentially forming a deep groove (7), driving each panel group (10), (10) further deeply, and removing the space between the left and right frames of the temporary retaining frame mold (1). A step of stretching toward the left and right panel groups, a step of performing piping to the excavated deep groove (7) and embankment for pipe fixing, and a left and right frame (1) of a retaining frame temporary frame type (1) 3) and (3) to loosen the panel group (10) above the embankment, and to raise the retaining frame temporary mold (1) to the required height position. The step of connecting and coupling the fastening temporary frame mold (1) again, the step of moving the joined panel group and the soil retaining temporary frame mold into the shallow groove of the next work position, and Bury Buried piping construction method, wherein the piping of a predetermined length section is performed while sequentially repeating the above steps.