JPH0643694B2 - A civil engineering construction work machine that intermittently installs steel piles for earth retaining walls at a position within 480 mm from the boundary, and an earth retaining wall construction method using steel piles and horizontal sheet piles. - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION “Industrial field of application” The present invention relates to an H-shaped steel material for a retaining wall such as a connecting wall, a connecting wall, a polymerized wall, and a connecting wall, which is constructed at a position 480 mm close to the boundary The present invention relates to a construction work machine for intermittently installing steel piles, and a construction method for constructing an earth retaining wall using steel piles such as H-shaped steel and horizontal sheet piles. It should be noted that 480 mm from the boundary means, for example, when an H-shaped steel material B of 300 mm is provided 180 mm from the boundary as shown in FIG. This means that the steel material B) is provided.

“Conventional Technology and Its Problems” Conventionally, when constructing a structure for this kind of temporary construction, a parent pile side sheet pile method which is usually constructed by an H-shaped steel material and a side sheet pile, or a steel sheet pile, a tonret sheet, and a sheet pile are connected. The steel sheet pile construction method is used.

However, in this type of conventional construction method, for example, in the construction method using Monken, when the pile is built (vertical),
Noise and vibration are generated. Because of that, noise pollution,
Or, due to the adverse effect on other ground, construction is actually impossible except in a certain place.

In the method of using a vibration exciter, when the pile is chucked, the pile is chucked at the center position of the frame.

Therefore, it becomes difficult to drive the pile at the near line position because the end of the frame interferes. Nowadays, the effective use of land is being called for. For example, according to the applicant's tentative plan and experience, in the parent pile side sheet pile construction method using a conventional auger, or in the steel sheet pile construction, H
Since the vertical hole into which the shaped steel material is inserted is excavated, it is usually 500 mm from the boundary line due to the need for a large vertical hole.
It is constructed with ~ 700mm, and many dead areas can be created.

The following technical documents can be cited as examples of the above-mentioned improvement.

(1) There is a sheet pile builder of Japanese Patent Publication No. 53-40242.
The present invention is a structure in which sheet piles can be continuously built at the position of a near line, and is a structure for effectively utilizing land.

(2) Further, there is a sheet pile construction method disclosed in JP-A-51-53707. The present invention has a structure in which sheet piles can be continuously installed in the vicinity of an existing building, as described above.

(3) There is a support metal member for driving piles such as H-shaped steel materials of Japanese Utility Model Publication No. 58-42502. This metal fitting has a structure capable of chucking the steel plate on the inner surface of the H-shaped steel material to bring the H-shaped steel material closer to the borderline position of the boundary. However, since this machine uses the Monken, there is the above-mentioned problem, and since the H-section steel is driven by using the Monken, the H-section steel is not necessarily built vertically in the ground. There is no guarantee that.

(4) In addition, as a chucking device for H-shaped steel materials, steel sheet piles, etc., a vibrating cylinder in a vibration exciter of a pile punching machine of JP-B-59-25962, a chucking device of 59-30058, and a chucking device of JP-61-24585. There is a steel sheet pile holding device. However, since these devices also chuck at the center of the frame, they have the same problem of dead land as described above.

(5) On the other hand, in the inventions of JP-B-53-40242 and JP-A-51-53707, since the screw-shaped cutting tip is thin, the excavation area of the tip formed in the ground is narrowed, resulting in In addition, it is considered that smooth installation of the steel sheet pile is considered difficult, or that the installation of the steel sheet pile requires a considerable squeezing force, resulting in poor workability. Further, in these inventions, a chuck device (a cylinder in this example) is provided on the side of the adjacent building so as to project considerably in order to hold the steel sheet pile. Therefore, even if it is possible to build it by adjoining to the adjacent building, the position of the adjoining line is considerably wide, and in reality, the earth retaining wall is only at a position of 500 mm to 600 mm from the boundary, that is, a place far away from the boundary. Can not be built, after all, there is a problem in terms of effective use of land, and when there is a building at the boundary, the chuck device becomes an obstacle (stops against the building), There is a big problem that the steel sheet pile cannot be installed at the near line position. Further, in the method of continuously constructing steel sheet piles, the steel sheet piles are inclined at the time of extracting the excavation, and it is impossible to construct the steel sheet piles in the vertical direction. Is likely to occur.

(6) In some documents, at the position 100 mm from the boundary,
A structure in which a monken is provided is disclosed. Specifically, it is illustrated that an H-shaped steel material of 300 mm can be driven so that the outer surface exists at a position of 200 mm. However, even if a horizontal sheet pile is inserted between the H-shaped steel materials of 300 mm constructed in this way, the position of the earth retaining wall is 500 mm from the boundary.
Is. Therefore, first of all, according to the technique of this document, as in the present invention, the boundary (adjacent building or adjacent building, etc.)
It is very clear that the earth retaining wall cannot be built in the close position within 80 mm. Further, in the technique of this document, the position where the mountain retaining wall can be constructed is completely different from the close position of the present invention. Furthermore, since the technique of the document uses a monken, there is a problem such as noise, vibration, or ground subsidence as in the above-described conventional example. In addition, there is no guarantee that the pile will be installed in the vertical direction, and as a further explanation of the technology of this document, the method of driving a pile by approaching an adjacent structure using a quick pile is obviously a desk theory. It is considered that the actual construction is almost impossible and the technical literature has many problems.

"Means for Solving the Problem" In view of the above, the present invention provides a connecting wall, a connecting wall, a superposing wall, and a connecting wall that are constructed at a 480 mm inward proximity position (hereinafter, in principle, a proximity position) from the boundary. A civil engineering construction work machine that can reliably and vertically install steel piles for earth retaining walls (such as building, press-fitting or inserting).
The gist is that the driven wheel of a drive device that can be moved up and down in a leader of a crane is connected to a fixed driven wheel such as a fixed pulley that is linked through a winding medium such as a belt, and is suspended from the fixed driven wheel. An excavation mixer located outside the drive unit and in an outer flange of a steel pile such as an H-shaped steel material, and linked with a drive wheel of the drive unit via a winding medium such as a belt; A movable driven wheel such as a movable pulley that is provided so as to be able to come in contact with and separate from the fixed driven wheel through a turning device that is vertically provided on the drive device, and a steel such as the H-shaped steel material that is suspended from the movable driven wheel. The excavation and agitation drill located inside the outer flange of the pile, the drive source such as a hydraulic motor that drives the drive wheel, and the inner surface of the inner flange of the steel pile such as the H-shaped steel material contacted It hangs on the bottom of the frame hanging from the drive. Fixed hanging arm, a movable pressing arm provided in the lower part of the frame body for pressing the outer surface of the inner flange of the steel pile such as the H-shaped steel material so as to be movable back and forth, and the movable pressing arm And a chucking device including a driving device such as a cylinder that is laterally provided below the frame that controls the forward and backward movement of the chucking device.

Further, the present invention is to construct a retaining wall such as a connecting wall, a connecting wall, an overlapping wall, and an attaching wall reliably and simply through a steel pile such as an H-shaped steel material located 480 mm closer to the boundary. As a purpose, the following construction method using steel piles and horizontal sheet piles will be adopted. The gist is that the driven wheel of a drive device that is vertically movable in a leader of a crane is connected to a fixed driven wheel such as a fixed pulley that is linked via a winding medium such as a belt, and is suspended from the fixed driven wheel. An excavating and stirring excavator located outside the drive unit and in an outer flange of a steel pile such as an H-shaped steel material, and linked with a drive wheel of the drive unit through a winding medium such as a belt; A movable driven wheel, such as a movable pulley, which is provided so as to be able to come in contact with and separate from the fixed driven wheel through a turning device vertically provided on the drive device, and a steel such as the H-shaped steel material that is suspended from the movable driven wheel. The excavating and stirring excavator located in the outer flange of the pile, the drive source such as a hydraulic motor for driving the drive wheel, and the inner surface of the inner flange of the steel pile such as the H-shaped steel material are brought into contact with each other. It is installed at the bottom of the frame hanging from the drive unit. That stationary drooping arm, and the H
A movable pressing arm provided to the lower part of the frame body that presses the outer surface of the inner flange of the steel pile such as a shaped steel material, and a lower part of the frame body that controls the longitudinal movement of the movable pressing arm. A drive device such as a cylinder laterally installed in, a chucking device consisting of, and a civil construction work machine composed of
A steel pile such as an H-shaped steel material is arranged at a close position within 480 mm from the boundary, and a steel pile such as an H-shaped steel material is provided in the vertical direction of the close position via the civil engineering work machine, and then, At appropriate intervals, steel piles of the following H-shaped steel and the like are vertically provided at the adjacent positions, and through the same operation and procedure as described above,
Providing a large number of steel piles such as H-shaped steel materials in a predetermined location at the close position intermittently, and then, through excavation of earth and sand at unexcavated portions between the steel piles such as the H-shaped steel materials, The horizontal sheet pile is inserted between the steel piles such as the H-shaped steel material, and then the next horizontal sheet pile is removed through excavation of earth and sand at the unexcavated site between the steel piles such as the next H-shaped steel material. Is a construction method in which a large number of transverse sheet piles are sequentially inserted and inserted between a large number of other steel piles such as H-shaped steel materials through the same operation and procedure as described above.

"Operation" The operation of the present invention will be described below.

First, the tip of the top sheep of the leader is located at the proximity position, and the movable side driven wheel and the excavation stirring edge are provided at this proximity position, and the movable side driven wheel and the excavation stirring edge are turned by the turning device. By the rotation of No. 2, the excavation and agitation can be performed at any time and the steel pile (hereinafter, described as a representative example of H-shaped steel material) can be advanced.

On the other hand, the movable pressing arm of the chucking device retracts the piston rod of the cylinder to the retracted position.

By completing the above operation, H
Since the shaped steel material can be mounted, the heavy equipment such as this crane or other crane is used to lift the H shaped steel material and insert the tip end thereof into the chucking device.

The H-shaped steel material inserted in this way consists only of the movable pressing arm that advances by expansion and contraction of the piston rod of the cylinder that operates subsequently, and the hard soil of the fixed hanging arm that is hung from the frame (same as above). ) Drill. That is, by excavating a small amount of earth and sand between the next H-shaped steel materials, the collapse of the earth and sand between the next H-shaped steel materials is promoted, and the efficiency of earth and sand excavation is promoted as described above. In this way, excavation of a portion of the earth and sand between the next H-shaped steel materials is performed, and when the predetermined depth is reached, the next horizontal sheet pile is inserted between the next H-shaped steel materials.

The operations such as excavation of a part of the sand between the H-shaped steel materials and the insertion of the horizontal sheet piles described above are sequentially performed between a large number of other H-shaped steel sheets, and the H-shaped steel sheet and the horizontal sheet piles are placed in close proximity. By connecting wall,
Soil retaining wall (connecting wall, overlapping wall, etc.).
Hereafter, the earth retaining wall will be used. ) Is built.

Then, against the earth retaining wall, although not shown, angry,
Use shavings, head ties, root stops, etc. Further, it is the same as in the prior art to secure an appropriate rooting length in the H-shaped steel material and the like. Also, instead of horizontal sheet pile, concrete board, P
It is possible to use C plate and iron plate. Further, it is also possible to construct a vertical sheet pile standing between the H-shaped steel materials and a crosspiece supporting several vertical sheet piles between the H-shaped steel materials. Further, although not shown, it is also possible to construct a soil cement pile by a cement milk construction method in which cement milk is press-fitted in the process of excavating the ground by excavation and agitation.

According to the present invention, in some cases, the H-section steel material can be reliably and smoothly provided by effectively responding to the earth pressure resistance of the residual soil on the inner surface side of the H-section steel material by excavation by excavation and agitation. , Or to be able to effectively cope with any soil, for example, rotary excavation with excavation and agitation, wire narrowing method, press-fitting method using a hydraulic device, etc. Can be used together.

"Example" Hereinafter, one example of a civil construction work machine for providing a steel pile (H-shaped steel material) for a retaining wall of the present invention will be described with reference to the drawings.

In the figure, 1 is a crane, 2 is its leader, 3 is a top sheave provided at the tip of the leader 2, a pulley 4 provided on the top sheave 3 is provided on a drive device 6 via a rope 5, and a pulley 7 is suspended. Thus, the civil construction work machine A (which is an example) including the drive device 6 and the like is hung on the top sheave 3 and mounted on the leader 2 so as to be vertically movable. Although not shown, the civil construction work machine A is
It is also possible to use other means provided in the reader 2, for example, a structure for raising and lowering with a chain. The drive unit 6 has a built-in drive source such as a hydraulic motor for driving a two-stage pulley described later.

In the figure, 8 is a driven wheel fixed to the output shaft 6A of the drive device 6, for example, a two-stage pulley, and a groove 8 of this two-stage pulley.
a and 8b are wrapped around a medium, for example, a belt 9,
A fixed driven wheel, for example, a fixed pulley 10 via 9a,
The movable driven wheel, for example, the movable pulley 10a is linked.
Therefore, when the two-stage pulley 8 rotates, the fixed pulley 10 and the movable pulley 10a are rotated accordingly. The fixed pulley 10 and the movable pulley 10a are equipped with excavation and agitation drills 11, 11a, respectively. Further, the tip ends of the excavation and agitation piers 11 and 11a are rotatably inserted into a frame of a chucking device described later, and the tip ends thereof are extended downward. Reference numeral 12 is an excavation stirring blade provided on the excavation stirring cutoffs 11 and 11a, and 13 and 13a are perforation claws. The power transmission mechanism, that is, the two-stage pulley 8, belts 9 and 9a,
The movable pulley 10a, the movable pulley 10a, and the like are examples, and the present invention is not limited to this example.

Further, reference numeral 15 in the drawing denotes a turning device which is mounted between the two-stage pulley 8 and the movable pulley 10a, and is configured to rotate about the two-stage pulley 8 as a fulcrum via, for example, a hydraulic device 16. There is. Therefore, the movable pulley 10a on the movable side and the excavation and stirring edge 11a can rotate. That is,
The swivel device 15 is swung outward through the hydraulic device 16, and an insertion space for the H-shaped steel material B is formed between the pair of excavation stirring cut-off holes 11, 11a. Is inserted. Also, both of these excavation and agitation drills 11 and 11a
Is provided inside the outer flange B ″ of the H-shaped steel material B.
In other words, the outer flange B ″ of the H-shaped steel material B is located on the outer side of both the excavation and stirring cut-offs 11 and 11a, so that the H-shaped steel material B is provided at the adjacent position. In order to secure the vertical state of the
Two stopper members 17 and 17a are provided at the inner corners of the H-shaped steel material B from Nos. 1 and 11a.

In the figure, 18 is a chucking device, and this chucking device 18 is, for example, the mounting rod 1 hung from the drive device 6.
A frame 20 supported by 9, 19a, a bifurcated fixed hanging arm 21 having a number of locking special notes 21a on the front surface (leader direction) hanging from the tip of the frame 20, and the fixed hanging It faces the arm 1 and moves forward and backward through a piston rod of a cylinder 22 which is provided on the lower surface of the frame body 20 on the lower surface of the frame 20 and has a large number of locking projections 2 on the front surface (anti-leader direction).
3a, the movable pressing arm 23 is provided. The fixed hanging arm 21 and the movable pressing arm 23 chuck both side surfaces of the inner flange B ′ of the H-shaped steel material B.

The earth retaining wall is constructed through the civil engineering work machine A and the operation and procedure (construction method) described above. A specific example is the earth retaining wall shown in FIG. 6 as described above. It is an example of construction constructed by using a horizontal sheet pile C which is provided between H-shaped steel materials B provided intermittently. In addition, FIG. 7 shows an earth retaining wall of another example, which is an example of construction constructed by using, for example, a splint E and a vertical sheet pile D that are provided between H-shaped steel materials B. A detailed explanation is omitted. The civil construction work machine A of the present invention is also used to build a soil cement pile or a permanent retaining wall pile (not shown). Furthermore, although the above description has been given for the H-shaped steel material B, the rail material and piles (not shown) are the same, and when the same steel sheet pile, trench sheet, etc. are used, they are slightly different from the civil engineering construction work machine A etc. By making improvements, it can be installed in a close position. F in the figure
Is a near line, and G is an adjacent building.

Incidentally, FIG. 2 shows another example, and in this example, the excavation device using the excavation and agitation drills 11 and 11a, and the wire 24.
In this case, the tension is applied to the wire 24 by winding the take-up device 1a by tensioning the drive device 6 and the take-up device 1b provided on the crane 1 via pulleys 1b and 1c. The drive device 6 and the excavation and agitation device 11, 11
A squeezing force is applied to the a, so that the excavation and agitation cuttings 11, 11 are
By utilizing the squeezing force with the excavation by a, the residual soil resistance in the vicinity of the H-shaped steel material B can be effectively dealt with. Similarly, although not shown, it is also possible in some cases to use a digging device and a press-fitting device together for the digging and stirring ends 11, 11a. Although not shown, the excavation and agitation drills 11, 11a may be in a single line.

As described above, a large number of horizontal sheet piles C are provided between the large number of H-shaped steel materials B provided in the intermittent manner, so that an earth retaining wall is constructed within 480 mm from the boundary. The construction method and procedure for constructing the earth retaining wall by the civil engineering work machine A or the like constructed at this close position have been described in detail in the above-mentioned “action”, and therefore the description thereof will be omitted.

[Advantages of the Invention] As described above, according to the present invention, a thin fixed hanging arm vertically hung from a driving device provided in a leader and a movable pressing arm that moves forward and backward by a cylinder facing the fixed hanging arm are used. With the chucking device configured, both excavation and agitation drills that sandwich the inner flange of an H-shaped steel material (steel pile) and that are suspended from the drive device are located inside the inner and outer flanges of the H-shaped steel material. It is a civil engineering construction work machine. So before,
The effect is that steel piles such as H-shaped steel, which could not be considered at all, can be installed intermittently in the ground at a close position in the vertical direction in a reliable, simple, and noiseless state. Further, the earth retaining wall can be constructed through the steel piles such as the H-shaped steel material and the horizontal sheet piles. Further, the steel piles such as H-shaped steel material do not enter the other ground (underground) at all, and various troubles with the adjacent ground are completely eliminated.
Further, there is an effect that the H-shaped steel material or the like does not tilt or shake, and various adverse effects on the adjacent ground or the adjacent structure hardly occur, and there is no vibration or noise at all.

Further, the present invention is a civil construction work machine in which steel piles such as an H-shaped steel material can be provided in a close position. Therefore, even if an adjacent building exists, the effect that a steel pile such as an H-shaped steel material for an earth retaining wall can be provided at a position adjacent to the adjacent structure, and an H-shaped structure is formed vertically in the ground at the adjacent position. There is an effect that a steel pile such as a steel material can be reliably and easily provided.

Further, after the steel piles such as H-shaped steel materials are intermittently provided in the vertical direction in the ground at the adjacent position through the civil engineering work machine,
It is a construction method for constructing an earth retaining wall by sequentially excavating and removing a part of the sand between steel piles such as the H-shaped steel material and sequentially inserting a large number of horizontal sheet piles. Therefore, effective use or beneficial use of land is achieved, in other words, effective use of existing dead land and discovery of unused land enable effective and beneficial use of land.

[Brief description of drawings]

1 to 5 show an example of a civil engineering work machine used for constructing an earth retaining wall of the present invention.
The figure is a front view showing a mounted state on the crane, Fig. 2 is a front view showing other mounted states, Fig. 3 is an enlarged front view of a partial lack of a main portion, and Fig. 4 is a drive wheel and driven wheels. And FIG. 5 is an enlarged cross-sectional view showing the stopper member. In addition, FIG. 6 (a), (b) and FIG. 7 (a),
(B) shows an example of the earth retaining wall of the present invention, and FIG. 6 (A) and FIG. 7 (A) show 48 from the boundary.
An example of constructing an earth retaining wall at a 0 mm proximity position is shown in each of the schematic plan views, FIG. 6 (b) and FIG. 7 (b), showing an example of constructing an earth retaining wall at a 480 mm proximity position from the boundary. FIG. 8 is a schematic side view showing each of them, and FIG. 8 is an enlarged schematic view explaining a state in which an H-shaped steel material is provided within 480 mm from the boundary. 1: Crane, 1a: Winding device 2: Leader, 3: Top sheave 1b, 1c, 4, 7: Pulley, 5: Rope 6: Drive device, 6a: Output shaft 8: Two-stage pulley, 8a, 8b : Grooves 9, 9a: Belts, 10: Fixed pulleys 10a: Movable pulleys, 11, 11a: Excavation and agitation blades 12, 12a: Excavation and agitation blades, 13 and 13a: Drilling claws 15: Swing device, 16: Hydraulic device 17, 17a: Stopper member, 18: Chucking device 19, 19a: Mounting rod, 20: Frame 21: Fixed hanging arm, 21a, 23a: Locking protrusion 22: Cylinder, 23: Movable pressing arm 24: Wire, A: Work machine B: H-shaped steel material, B ': Inner flange B ": Outer flange, C: Horizontal sheet pile D: Vertical sheet pile, E: Jetty F: Proximity line, G: Adjacent building

Claims (2)

[Claims] 1. A fixed driven wheel such as a fixed pulley which is linked to a drive wheel of a drive device which is vertically movable on a leader of a crane through a winding medium such as a belt, and is hung from the fixed driven wheel. And, the excavator and agitator located outside the drive unit and in the outer flange of the steel pile such as an H-shaped steel material are linked with the drive wheel of the drive unit through a winding medium such as a belt, In addition, a movable driven wheel such as a movable pulley that is provided so as to be able to come in contact with and separate from the fixed driven wheel via a turning device that is vertically installed on the drive device, and a movable driven wheel that is suspended from the movable driven wheel and that is made of the H-shaped steel material or the like The excavation and agitation drill located inside the outer flange of the steel pile, the drive source such as a hydraulic motor that drives the drive wheels, and the inner surface of the inner flange of the steel pile such as the H-shaped steel material. It hangs on the bottom of the frame hanging from the drive unit. Fixed hanging arm, a movable pressing arm provided in the lower part of the frame body for pressing the outer surface of the inner flange of the steel pile such as the H-shaped steel material so as to be movable back and forth, and the movable pressing arm A chucking device consisting of a driving device such as a cylinder laterally installed at the bottom of the frame that controls the forward and backward movement of the frame, and a steel pile for the earth retaining wall at an adjacent position within 480 mm from the boundary consisting of Civil engineering work machine to be installed in. 2. A fixed driven wheel such as a fixed pulley which is linked to a drive wheel of a drive device which is vertically movable on a leader of a crane through a winding medium such as a belt, and is hung from the fixed driven wheel. And outside the drive, and H
A swivel device that is linked to the excavation and agitation device located in the outer flange of a steel pile of shaped steel or the like through a drive wheel of the drive device through a winding medium such as a belt, and that is vertically installed on the drive device. And a movable driven wheel such as a movable pulley that is provided so as to be capable of coming into contact with and separated from the fixed driven wheel via a wheel, and is located inside the outer flange of the steel pile such as the H-shaped steel material that is hung from the movable driven wheel. In the lower part of the frame suspended from the drive device, which is abutted against the inner surface of the inner flange of the steel pile, such as the H-shaped steel material, and the excavating and stirring excavator, the drive source such as the hydraulic motor that drives the drive wheels. A vertically-moving fixed hanging arm, a movable pressing arm provided in the lower portion of the frame body for pressing the outer surface of the inner flange of the steel pile such as the H-shaped steel material so as to be movable back and forth, and the movable type. A cylinder, etc. that is installed horizontally under the frame that controls the forward / backward movement of the pressing arm. A steel pile such as an H-shaped steel material is arranged at a position within 480 mm from the boundary through a civil construction work machine configured by a chucking device including a drive unit and the civil construction work machine. Then, steel piles of H-shaped steel or the like are provided in the vertical direction of the adjacent position, and thereafter, steel piles of the next H-shaped steel or the like are provided in the vertical direction at the adjacent positions at appropriate intervals. Through the same operation and procedure, a large number of steel piles such as H-shaped steel materials are intermittently provided at predetermined positions in the proximity positions, and then, at unexcavated portions between the steel piles such as the H-shaped steel materials. Through excavation of earth and sand, insert a horizontal sheet pile between the steel piles of the H-section steel, etc., and then eliminate excavation of earth and sand at the unexcavated site between the steel piles of the next H-section steel, etc. The next horizontal sheet pile is inserted and inserted, and the same operation as described above is performed between a large number of other steel piles such as H-shaped steel materials. Through fine steps, in sequence a number of earth retaining wall construction method according to the steel pile and the horizontal sheet pile provided with transverse sheet pile into 480mm in proximity position of the boundary, which is constructed by inserting.