JPS62178692A - Propulsion sheathing device for method of drive construction - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a propulsion soil for open-cut construction used when burying various pipes or other members in trenches created by excavating the ground using the open-cut construction method. This relates to a fastening device.

[Prior art]

Conventionally, a propulsion retaining device for open-cut construction method used when burying various pipes or other parts in a trench created by excavating the ground using open-cut construction method is disclosed in Japanese Patent Application Laid-Open No. 59-20.
As disclosed in Publication No. 3191, a pair of earth retaining slide panels supporting both side walls of a trench is slidably supported by a support frame placed between them, and the pair of slide panels After excavating the ground in front of the
A propulsion retaining device is known in which the slide panel and the support frame are configured to move forward separately.

[Problem that the invention seeks to solve]

However, in the case of the conventional propulsion retaining device, the retaining slide panel must be towed and moved forward while the retaining force is acting on it, so there is a limit to the traction capacity. Yes, that is, the length of the slide panel in the front-rear direction cannot be increased to a certain degree.

Therefore, the working space between a pair of slide panels is short, so it cannot be used for burying long objects such as long pipes, and it takes a relatively long time to connect objects to be buried such as pipe bodies. If this is required, the time for which the propulsion retaining device is stopped, that is, the waiting time, becomes longer, so there is a problem that the excavation efficiency decreases.

[Purpose and structure of the invention]

The purpose of this invention is to provide a propulsion earth retaining device for open cut construction method which can advantageously solve the above-mentioned problems. An earth retainer that extends in the vertical direction and is open at the rear of each slide panel 1 in a propulsion earth retainer comprising a retaining slide panel 1 and a support frame 2 that slidably supports each slide panel 1. A panel insertion groove 3 is provided, and a plurality of retaining panels 6 having connecting protrusions 4 on one side and connecting grooves 5 on the other side are connected to each other on both sides in the groove, Lee row 7
The front part of each earth retaining panel row 7 is arranged in the earth retaining panel insertion groove 3, and the depth Dl of the earth retaining panel insertion groove 3 is greater than the width D2 of the earth retaining panel B. This propulsion earth retaining device for open-cut construction is characterized in that it is set in a dog-eared manner and a telescopic support member 8 is removably interposed between left and right earth retaining tunnel rows 7.

〔Example〕

Next, the present invention will be explained in detail using illustrated examples.

7 and 8 show a retaining panel 6 used in an embodiment of the present invention, which has a connecting protrusion 4 on one side in the width direction and a connecting groove on the other side in the width direction. Multiple steel ξ-nel units 9, 10.11 with 5
are arranged in series in the vertical direction, and a hanging fitting 12 is fixed to the upper end of the uppermost panel unit 9, and vertical retaining grooves are arranged in a straight line on both sides of the width direction on the inner surface of each panel unit. 13 is provided, and a steel joint plate 14 is arranged across vertically adjacent panel units, and the dilt 15 inserted through the joint plate 14 is screwed to the panel unit, and the panel units 9, 13 are connected to each other. 10
．． 11 constitutes the earth retaining panel 6.

9 and 10 show a telescopic steel support member 8 used in an embodiment of the invention,
A pair of beam members 16 and 17 having a box cross section are slidably inserted, and a hydraulic jack 20 for expansion and contraction is interposed between the jack receiving members 18 and 19 fixed inside each of the beam members 16 and 17, The hydraulic jack 20 is a jack receiving member 18.19.
The beam members 16, 17 and the hydraulic jack 20 constitute a telescoping beam 21, and both ends of the telescoping beam 21 are provided with vertical engaging grooves 22 on both sides in the width direction. A vertical support member 23 is fixed by welding, and a stiffener 24 is fixed by welding to both upper and lower surfaces of both ends of the telescopic beam 21 and the inner surface of the support member 23. A support member 8 is constituted by a support member 23 fixed to both ends.

FIG. 11 shows an earth retaining panel retaining member 25 and an anchor rod 26 used in an embodiment of the present invention, in which a vertical connecting protrusion 4 is integrally attached to the front part of a vertical retaining member main body 27. The earth retaining panel retaining member 25 is configured by having a plurality of push-in holes 28 passing through the retaining member main body 27 in the left-right direction at intervals in the vertical direction. A rod 26 is inserted.

Figures 1 to 6 show a propulsion earth retaining device for open cut construction according to an embodiment of the present invention, which shows a groove 29 in the ground.
A steel support frame 2 is arranged between a pair of steel earth retaining slide panels 1 that support both side walls of the slide panel 1.
On the inner surface of the groove, a plurality of guide members 30 made of H-beam steel extending in the longitudinal direction (front-back direction) are fixed at intervals in the vertical direction, and each guide member 30 is fixed to the vertical frame member of the support frame 2. A vertical plate of a steel side frame member 33 with an inverted cross section that is slidably fitted into a support fitting 32 fixed to [3] and further extends in the front-rear direction overlaps the upper outer surface of the slide panel 1. The horizontal plate of the side frame member 63 is placed on the upper surface of the side part of the support frame 2 and fixed by bolts or welding.

Six or more pillars 64 arranged at intervals in the front-back direction
An earth retaining plate 35 is placed between them and fixed with bolts 3B, thereby forming an upper earth retaining nozzle 37, and an inner lower part of each support column 64 in the upper earth retaining panel 37 is attached. A metal fitting 68 is fixed by welding, and the lower part of the upper earth retaining panel 37 and the mounting metal fitting 38 are placed on the horizontal plate of the side frame member 33, and the mounting metal fitting 68 is attached to the support frame 2 by the Daltro 9. Fixed at the top.

The slide panel 1 is composed of a front slide panel 1A and a rear slide nozzle 1B fixed to the outside of the rear end by welding, and side plates arranged parallel to each other at intervals on the inside of the rear slide panel 1B. 40 is fixed to the side surface of the narrow part of the guide member 30 by welding, and the rear slide/ξ channel 1B and the side plate 40 form a retaining panel insertion groove 3 that extends in the vertical direction and is open at the rear. It is configured.

The front end of the rear upper earth retaining plate 41 is fixed to the outside of the rear end of the upper earth retaining panel filter 7 by welding, and the rear upper earth retaining plate 41 is arranged on the same plane as the rear slide panel 1B, In addition, a mounting bracket 45 is welded to the inner lower part of each column 42 in a rear upper inner panel 44 consisting of a pair of columns 42 arranged at intervals in the front-rear direction and an upper side plate 43 interposed and fixed between them. The mounting bracket 45 is placed on the horizontal plate of the side frame member 33, and the mounting bracket 45 is fixed to the upper part of the support frame 2 with bolts. Rear upper retaining plate 41 in the side plate 40
The side surfaces are arranged on the same plane, and one earth retaining panel is also provided between the rear upper earth retaining plate 41 and the rear upper inner panel 44.

A sled 46 is fixed to the lower part of the support frame 2, and an engaging member 47 for pulling and moving is fixed to the front end of each slide panel 1.

A large number of earth retaining panels 6 configured as described above are interlocked and connected to each other on both sides (left and right sides) in the groove width direction to constitute earth retaining panel rows 7 that support the groove side walls, and each earth retaining panel row The front part of 7 is arranged in the earth retaining panel insertion groove 3, and the depth Dl of the earth retaining panel insertion groove 3 is
is set larger than the width D2 of the earth retaining panel 6.

The rear slide panel 1B and the rear upper retaining plate 4
1 may be pressed by the tonosho and pressed against the outer surface of the earth retaining panel 6, and in this case, frictional resistance is generated between the earth retaining panel 6, the rear slide panel 1B, and the rear upper earth retaining plate 41. First, earth retaining nogunnel insertion groove 6
In order to reliably prevent the earth retaining or o-nel 6 inserted therein from moving together with the slide panel 1 due to the frictional force when the slide nozzle 1 is moved forward, the first earth retaining or o-nel The connecting protrusion 4 of the retaining member 25 is pushed into the connecting groove 5 at the rear of the retaining member 6, and the anchor rod 26 is inserted into the insertion hole 28 of the retaining member 25 and driven into the ground. is fixed so that it does not move forward, and its stopper member 25
This prevents the first earth retainer 7g from moving forward.

Next, excavate the ground in front between the pair of left and right slide panels 1, move one slide panel 1 forward by one earth retaining panel, and then attach the second earth retaining panel to the first earth retaining panel. While engaging, insert the earth retaining panel insertion groove 3
Then, after moving the other slide panel 1 forward by one earth retaining panel, as in the previous case, insert the second earth retaining panel into the first earth retaining panel and insert the other slide panel 1. It is inserted into the earth retaining panel insertion groove B in the slide panel 1, and then the support frame 2 is moved forward by one earth retaining panel.

In this way, the front ground excavation between the pair of left and right slide nozzles 1, the forward movement of one slide panel and the insertion of the earth retaining panel, and the forward movement of the other slide nozzle 9 and the earth retaining panel. The insertion of the support frame 2 and the forward movement of the support frame 2 are sequentially repeated to move the propulsion retaining device forward.

When a paddle 1 for moving the slide panel 1 forward, for example, a backhoe used for excavating a trench, is engaged with the engagement member 47 at the front end of the slide/ξ panel 1 and towed and moved, and the support frame 2 is moved forward. For example, a backhoe is engaged with the upper cross beam 49 of the support frame 2 to pull it.

The support member 26 of the support member 8 is disposed over the earth retaining panel 6 which protrudes rearward from the earth retaining panel insertion groove 3 and is HD aligned in the front-rear direction, and the hydraulic jack 20 for expansion and contraction of the support member 8 is extended. Then, insert the retaining 7 flanges 22 on both sides of the support member 23 into the engagement grooves 1 of each retaining panel 6.
3, and the supporting member 8 supports the earth retaining panel B which acts on the left and right earth retaining panels B. In this way, the supporting members 8 are set at appropriate intervals between the left and right earth retainers and the ξ flanges 6, and when the work space for joining the buried pipes has been secured, the buried pipes 8
8 is suspended into the trench to perform the work of joining the buried pipes.

Since the buried pipe joining work position moves in the excavation direction, backfilling is performed from the rear, and in parallel with this backfilling work, the support member 8 and earth retaining panel 6 from the backfilling section are pulled out and repeated. To use. Note that when pulling out the support member 8, the width of the support member 8 is shortened by shortening the hydraulic jack 20 in advance.

When carrying out this invention, the retaining panel 6 may be one that is not divided in the vertical direction, or may have any cross-sectional shape.

The supporting member 8 may be of any structure other than that shown in the drawings, and the upper level of the slide panel 1 is set higher than the ground surface, and the upper earth retaining panel 3 and the rear upper earth retaining member are Plate 41 and rear upper inner panel 44
etc. may be omitted.

〔Effect of the invention〕

According to this invention, after excavating the ground in front between the pair of earth retaining slide panels 7, the slide panel 1 is moved forward, and then the earth retaining panel 6 is engaged with the existing earth retaining panel. , insert it into the retaining panel insertion groove 3 at the rear of the slide panel 1, move the support frame 2 between the left and right slides and the o-nel 7 forward, and further protrude rearward from the retaining panel insertion groove 3. By repeating the process of setting the expandable support member 8 between the left and right earth retaining panels A, a large number of earth retaining panels can be placed on both sides of the trench after the propulsion earth retaining device has been propelled. The earth retaining panel row 7 consisting of 6 panels can be set without any gaps, and the earth retaining panel row 7 can be strongly supported against the tonosho. Therefore, a long work space can be created without increasing the length of the propulsion earth retaining device. It is possible to perform jointing work on long objects by installing a 2-way earth retaining panel row 7, and even if the joining work takes a long time, the work space is lengthened by the earth retaining panel row 7, so that excavation and propulsion earth retaining work can be carried out in parallel with the joint work. Since the equipment can be propelled, work efficiency can be improved. Also, the depth Dl of the earth retaining and O-flank insertion groove 6 is the width D2 of the earth retaining panel 6.
Since it is designed to be more dog-edge than the existing earth retaining panel, the new earth retaining panel can be easily engaged with the existing earth retaining panel within the earth retaining panel insertion groove 6, which is not adversely affected by earth and sand, and the support member 8 is extendable and retractable, so it is easy to attach and detach between the left and right earth retaining tunnel rows 7, and it is also economical because the earth retaining panel 6 and support member 8 can be pulled out and reused. is obtained.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, in which Fig. 1 is a plan view of a propulsion earth retaining device for open-cut construction, Fig. 2 is a cross-sectional view taken along line A-A in Fig. 1, and Fig. 3 is a cross-sectional view taken along line A-A in Fig. Figure 1 is a sectional view taken along the line B-B in Figure 1, Figure 4 is a perspective view of the propulsion retaining device, Figure 5 is a sectional view taken along the line C-C in Figure 4, and Figure 6 is the rear upper inner panel in Figure 4. FIG. 7 is a partially cutaway perspective view of the earth retaining panel; FIG. 8 is a sectional view taken along line D-D in FIG. 7; FIG. 9 is a perspective view of the support member; The figure is a longitudinal sectional front view showing a part of the support member, and FIG. 11 is a perspective view showing the snow stopper member and the anchor rod. In the figure, 1 is a slide panel for earth retaining, 2 is a support frame, 3 is an earth retaining panel insertion groove, 4 is a connecting protrusion, 5 is a connecting groove, 6 is an earth retaining panel, 7 is a row of earth retaining panels, and 8 is an earth retaining panel. Support member, 16 is an engagement groove, 20 is a hydraulic jack for expansion and contraction, 21 is an expansion and contraction beam, 22 is a retaining flange, 23 is a support member, 25
26 is an anchor rod, 29 is a groove, 30 is a guide member, 32 is a support metal fitting, 67 is an upper earth retaining panel, 40 is a side plate, 41 is a rear upper upper retaining plate, 44
is the rear upper inner panel, and 48 is a buried pipe. Figure 11

Claims (1)

[Claims] A pair of earth retaining slide panels 1 that support both side walls of the trench
and a support frame 2 that slidably supports each slide panel 1. At the rear of each slide panel 1, there is an earth retaining panel insertion groove 3 that extends in the vertical direction and is open at the rear. A large number of earth retaining panels 6 which are provided and have a connecting protrusion 4 on one side and a connecting groove 5 on the other side are connected to each other on both sides in the groove to form an earth retaining panel row 7, The front part of each earth retaining panel row 7 is arranged in the earth retaining panel insertion groove 3, and the depth D1 of the earth retaining panel insertion groove 3 is set larger than the width D2 of the earth retaining panel 6. A propulsion earth retaining device for open cut construction method, characterized in that an expandable support member 8 is removably interposed between the earth retaining panel rows 7.