JPH0774501B2 - How to place steel piles - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method for driving a steel pile,
In particular, it does not consist of flanges and webs such as H-section steel and I-section steel.
Steel pile with a part notched on the outer surface of one flange
The protruding groove of the rectangular cross section on the outer surface of the other flange
A steel pile with axially protruding pieces that engage with the protruding grooves
Steel for forming a wall in the ground by continuous casting
It concerns the method of placing piles .

[0002]

2. Description of the Related Art For example, when a steel pile is continuously cast to form a wall in a hard ground, a steel having a flange and a web such as H-shaped steel or I-shaped steel having high rigidity is used instead of the sheet pile. Piles are often used. In order to continuously integrate these steel piles, as shown in FIG.
The projecting groove portion 10 having a rectangular cross section, a part of which is cut away, and the projecting piece 13 that engages with this projecting groove portion 10 are provided on the outer surfaces of the flanges 2b and 12b of No. 2, and the steel pile is driven while engaging these as a joint portion .

These steel piles such as H-shaped steel and I-shaped steel are usually driven by a vibrating hammer driving machine such as a vibro hammer, but when the verticality of the steel pile deteriorates, the post-driving that engages with this steel pile is performed. The verticality of steel piles is also cumulatively affected. Therefore, the inclination of the steel pile is measured by an inclination measuring device at any time, and the driving angle of the steel pile is adjusted based on the measurement result.

In order to measure the inclination of the steel pile, conventionally, as shown in FIG. 4, an angle member 3 is provided at the corner where the web 2a and the flange 2b of the steel pile 2 such as H-shaped steel intersect.
Was arranged in the longitudinal direction to form a vertical hole 4 having a rectangular cross section, and an inclination measuring device 6 suspended by a signal cable 5 was inserted into the vertical hole 4. The inclination measuring device 6 has a built-in differential transformer type inclinometer, and the upper and lower rollers 7 (only the upper roller 7 is shown in FIG. 4) whose shaft is fixed to the device body 6a are used as the surface to be measured. The axis of the device body 6a is made parallel to the axis of the steel pile 2 by abutting against the flange 2b, and in this state, the inclination degree detected by the differential transformer type inclinometer is used as an electric signal through the cable 5 to display the equipment on the ground side. It is designed to be transmitted to. In FIG. 4, 8 is an elastic roller.

[0005]

However, in such a conventional steel pile driving method, the angle for forming the vertical hole 4 for inserting the inclination measuring device 6 to measure the inclination of the steel pile 2 is set. Since the material 3 has to be welded to the steel pile 2, there is a problem that it takes time and effort.

Therefore, the present invention provides a steel pile driving method capable of continuously driving steel piles while easily measuring the inclination without providing a vertical hole exclusively for inclination measurement. To aim.

[0007]

In order to solve the above-mentioned problems, the method for driving a steel pile according to the present invention is applied to H-shaped steel and I-shaped steel.
Steel pile consisting of flange and web, with one flan
On the outside surface, the protruding groove with a rectangular cross section that is partially cut
On the outer surface of the flange of the
By continuously laying steel piles each equipped in the axial direction,
In the method of driving steel piles to form walls on
The process of driving the steel piles into the ground and the
Built-in working transformer type inclinometer in the protruding groove of the steel pile
Device main body, and the protruding groove portion provided in the device main body
Inside the flange as the surface to be measured
At least a pair of upper and lower rollers that roll, outside the flange
The first inner surface of the protruding groove portion facing the side surface is elastically contacted with the first inner surface.
No. 1 elastic contact member, and the protrusion forming a right angle with the first inner surface.
A second elastic contact member that elastically contacts the second inner surface of the groove.
Insert and fix the tilt measuring device to fix the steel pile at the fixed position.
The step of measuring the inclination, and the protruding groove portion whose inclination is measured
While engaging the protruding piece of the steel pile adjacent to the inside,
Adjacent while adjusting the inclination based on the measurement results
It consists of the process of placing steel piles in the ground, and the above steps are performed in sequence.
It is possible to repeatedly form a wall body with integrated steel piles in the ground.
And are characterized by .

[0008]

[Action] In striking設方method of the construction and steel pile as inclined measuring apparatus, Te projecting groove smell <br/> steel pile has finished pouring, the apparatus main body first and second elastic contact Since it is positioned at the corner of the protruding groove by the reaction force received from the member, the device main body is placed in the protruding groove whose cross-sectional area is considerably larger than the conventional vertical hole for inclination measurement formed by welding angle materials. Even if it is inserted , the device body does not rattle and the protruding groove
It can be inserted and fixed at any position inside, which allows accurate tilt measurement.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a vertical cross section of the projecting groove portion 10 of the steel pile 2. As shown in FIG. 4 described above, the protruding groove portion 10 has a pair of angle steels 11 facing each other along the longitudinal direction on the outer surface of the flange 2b of the steel pile 2, and a part of the long side portion is notched. It has a rectangular cross section. This groove 10
Can insert and engage a T-shaped steel 13 as a protruding piece arranged on the outer surface of the flange 12b of the adjacent steel pile 12 with the protruding groove portion 10 and the T-shaped steel 13. The joint portion of is configured.

When measuring the inclination of the steel pile 2,
A tilt measuring device 14 is vertically inserted into the groove 10. The tilt measuring device 14 includes a device body 14 extending vertically.
The tilt of the device body 14a in the left-right direction in FIG. 2 can be measured by a differential transformer type inclinometer (not shown) housed inside the device body 14a. The measurement result is transmitted as an electric signal to the display device on the ground side via the cable 5.

Rollers 17 to 20 are vertically arranged on both sides (left and right sides in FIG. 2) of the apparatus body 14a. One of the rollers 17 and 18 is adapted to come into contact with a flange 2b as a surface to be measured of the steel pile 2 to roll, and its support shaft is fixedly supported by the apparatus body. The upper rollers 17 are composed of a pair of right and left as shown in FIG. 1, whereby rolling of the apparatus main body 14a is prevented. The other rollers 19 and 20 (first elastic contact member) are adapted to abut on an inner first inner surface 21 of the angle steel 11 facing the flange 2b so as to roll, and the supporting shaft thereof is a leaf spring. It is supported at the tips of 22, 23. The leaf springs 22 and 23 are adapted to elastically contact the rollers 19 and 20 with the first inner surface 21, so that the apparatus body 14a is pressed against the flange 2b by the reaction force received by the leaf springs 22 and 23. It has become.

As shown in FIG. 1, a substantially U-shaped leaf spring 24 (second elastic contact member) is provided on the side surface of the apparatus body 14a. The central portion of the leaf spring 24 is in slidable elastic contact with the second inner surface 25 of the angle steel 11 forming a right angle with the first inner surface 21 of the angle steel 11, and the reaction force causes the device body 14a to angle. Third inner surface 26 of steel 11
It is designed to be pressed. A pair of upper and lower sliding plates 27 are attached to the side surface of the apparatus body 14a, and the sliding plates 27 are in sliding contact with the third inner surface 26.

The inclination measuring device 6 is constructed as described above, and after the steel pile 2 is driven to a predetermined depth, the inclination measuring device 14 is inserted into the groove portion 10 to measure the inclination of the steel pile 2. However, since the inclination of the steel pile 2 is particularly problematic in the pile row direction due to the clearance of the groove portion 10 and the like, the inclination measuring apparatus 14 also measures only the inclination in the pile row direction. When the inclination measuring device 14 is inserted into the groove portion 10, the rollers 19, 20 and the leaf spring 24 cause the first and second inner surfaces 21, 25 of the groove portion 10 to move.
As a result of the elastic contact with each other, the device body 14a is pressed and positioned by the corner portion on the flange 2b side by the reaction force thereof as shown in FIG. Therefore, the size of the device body 14a is larger than that of the groove portion 10.
Although the device main body 14a can be reliably positioned with respect to the flange 2b of the steel pile 2 in spite of being relatively small, the accurate inclination measurement can be performed.

Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various modifications can be made. For example, in the above embodiment, the first embodiment of the inclination measuring device 14 is described. The elastic contact members are rollers 19, 20 and leaf spring 2
However, instead of these, a leaf spring whose surface has been subjected to a low friction treatment may be directly slidably elastically contacted with the first inner surface 21.

[0015]

As described above, the method for driving steel piles according to the present invention is provided on each steel pile as means for engaging with adjacent steel piles.
The protruding groove part is used as it is, and the protruding groove part is used.
Insert and fix the tilt measuring device at any position in the
Since the inclination is measured, the inclination
It is not necessary to provide a vertical hole for measurement on the steel pile,
Of course, it is possible to reduce costs only,
It is possible to measure the inclination of arbitrary steel piles at the driving site.
The steel piles accurately by placing the steel piles accurately.
It is possible to form a continuously integrated and stable wall body in the ground .

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing a state in which an inclination measuring device is inserted into a projecting groove portion of a steel pile.

FIG. 2 is a sectional view taken along the line II-II of FIG.

FIG. 3 is a cross-sectional view showing a state in which a tilt measuring device is inserted in a protruding groove portion of a steel pile.

FIG. 4 is a transverse cross-sectional view showing a state of measuring the inclination of a conventional steel pile.

[Explanation of symbols]

 2 Steel Pile 2b Flange (surface to be measured) 10 Projecting groove part 13 T-shaped steel (projecting piece) 14 Tilt measuring device 14a Device body 17,18 Roller 19,20 Roller (first elastic contact member) 21 First inner surface 22 , 23 leaf springs 24 leaf springs (second elastic contact member) 25 second inner surface

Claims (1)

[Claims] 1. Flange and wafer of H- section steel, I- section steel, etc.
Steel pile consisting of
On the outer surface of the other flange
Each of which is provided with a protruding piece that engages with the protruding groove portion in the axial direction.
A wall body in the ground by continuously laying steel piles
In the method of placing steel piles for
The step of driving and the projecting groove of the steel pile after driving.
Inside the section, the device body with the built-in working transformer type inclinometer,
Measurement target in the protruding groove portion, which is arranged in the apparatus main body
The outer surface of the flange as a surface abuts and rolls at least
Also a pair of upper and lower rollers, before facing the outer surface of the flange
A first elastic contact member that elastically contacts the first inner surface of the protruding groove portion, and
And a second inner portion of the protruding groove that is perpendicular to the first inner surface.
A tilt measuring device comprising a second elastic contact member elastically contacting the surface
Insert and fix and measure the inclination of the steel pile at the fixed position.
Process and steel pile adjacent to the inside of the projecting groove part whose inclination is measured
Based on the measurement results while engaging the protruding piece of
The adjacent steel piles into the ground while adjusting the inclination.
Steel piles while repeating the above steps in sequence.
A method for driving steel piles, characterized in that a wall body integrated with the steel is formed in the ground .