JPH05195532A - Setting of steel pile - Google Patents

Abstract

PURPOSE:To reduce the cost of setting as well as raise the accuracy of setting by a method in which a slope measurer is set in an elastically pressing manner on the inner one corner of a rectangular trench for coupling the adjacent pile in a shape-steel flange. CONSTITUTION:A partly notched rectangular trench is formed in the outside of the flange 2b of an H-shaped steel pile 2, and a T-shaped coupler is provided to the other side to farm a coupler for continuous setting. A slope measurer 14 is also provided and a pair of upper and lower rollers 17 and a slide plate 27 are provided to the body 14a. A pair of upper and lower rollers 19 and a plate spring 24 are attached through elastic parts to the opposite sides of the rollers 17 and the plate 27 of the body 14a. After driving the pile 2, the measurer 14 hung down by a cable is inserted into the trench to elastically joint the one corner consisting of the flange 2b and one-side wall of the trench. The slope of the pile 2 is measured by he measurer 14 and transmitted to a displayer on the ground through the cable. The measurement can thus be made with high accuracy without providing a vertical hole for measurement for the pile.

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, the present invention relates to a steel pile driving method for accurately and continuously driving steel piles composed of flanges and webs such as H-shaped steel and I-shaped steel.

[0002]

2. Description of the Related Art For example, when a steel pile is continuously driven 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 with a part 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 carried out. 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 detected by the differential transformer type inclinometer is used as an electric signal through the cable 5 to display on the ground side. It is designed to be transmitted to. In FIG. 4, 8 is an elastic contact 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, according to the method of driving a steel pile of the present invention, a steel pile composed of a flange and a web of H-shaped steel, I-shaped steel or the like is continuously driven to form a wall in the ground. In order to form a body, a protruding groove portion having a rectangular cross section with a part cut out and a protruding piece that engages with the protruding groove portion are provided on the flange outer surface of the steel pile, and along the preceding steel pile while engaging these. In the method of placing a steel pile in which the next steel pile is placed and the steel pile is integrated, in the projecting groove portion of the steel pile that has been placed, a device main body incorporating an operating transformer type inclinometer,
At least a pair of upper and lower rollers disposed on the apparatus main body and rolling by abutting the outer surface of the flange as the surface to be measured in the projecting groove portion, on the first inner surface of the projecting groove portion facing the outer surface of the flange. By inserting an inclination measuring device including a first elastic contact member that elastically contacts and a second elastic contact member that elastically contacts the second inner surface of the protruding groove portion that is perpendicular to the first inner surface of the steel pile, The feature is that the inclination is measured at any time.

[0008]

In the steel pile driving method constructed as described above, the inclination measuring device is positioned at the corner of the projecting groove portion by the reaction force received from the first and second elastic contact members in the projecting groove portion. Therefore, even if the device body is inserted into a protruding groove that has a considerably larger cross-sectional area than the conventional vertical hole for tilt measurement formed by welding angle materials as before, there is no rattling of the device body and accurate tilting is possible. A measurement can be made.

[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 on the outer surface of the flange 2b of the steel pile 2 along the longitudinal direction thereof, and a part of the long side portion is notched. It has a rectangular cross section. This groove 10
Is designed to be able to 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,
The inclination measuring device 14 is vertically inserted into the groove 10. The tilt measuring device 14 is a device body 14 that extends vertically.
The inclination 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 main body of the apparatus. It should be noted that 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 the inner first inner surface 21 of the angle steel 11 facing the flange 2b to roll, and the supporting shaft thereof is a leaf spring. It is supported by the tips of 22 and 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 leaf spring 24 (second elastic contact member) having a substantially U shape is provided on the side surface of the apparatus body 14a. The central portion of the leaf spring 24 is slidably elastically contacted 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 its reaction force causes the apparatus body 14a to be angled. Third inner surface 26 of steel 11
It is designed to be pressed. A pair of upper and lower slide plates 27 are attached to the side surface of the apparatus body 14a, and the slide 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 device 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 reaction force causes the apparatus body 14a to be pressed and positioned by the corner portion on the flange 2b side as shown in FIG. Therefore, the size of the device body 14a is larger than that of the groove portion 10.
Although the device body 14a can be reliably positioned with respect to the flange 2b of the steel pile 2 despite being relatively small, 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 and 20 and leaf spring 2
However, instead of these, a leaf spring whose surface has been subjected to low friction treatment may be directly slidably contacted directly with the first inner surface 21.

[0015]

As described above, the steel pile driving method according to the present invention measures the inclination of the steel pile by inserting the inclination measuring device into the groove portion of the steel pile joint portion already installed in the steel pile. Therefore, it is not necessary to provide a vertical hole for exclusive use for inclination measurement in the steel pile as in the conventional case, and it is of course possible to reduce the cost by that amount. It is possible to measure the inclination of the steel pile and to drive steel piles with high accuracy.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing a state in which a tilt measuring device is inserted in a protruding 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 (measurement surface) 10 Projection groove part 13 T-shaped steel (projection piece) 14 Tilt measuring device 14a Device main 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. A rectangular cross-section in which a part of the flange of the steel pile is cut out in order to form a wall body in the ground by continuously driving steel piles made of flanges and webs such as H-section steel and I-section steel. A protruding groove portion and a protruding piece that engages with the protruding groove portion,
In the method of placing a steel pile that integrates the steel pile with placing the next steel pile along with the preceding steel pile while engaging these, in the projecting groove portion of the steel pile that has been placed, A device main body having a built-in working transformer type inclinometer, and at least a pair of upper and lower rollers which are arranged in the device main body and abut on an outer surface of a flange as a surface to be measured in the protruding groove portion, and the outer surface of the flange. The first of the protruding groove portions facing the
A first elastic contact member elastically contacting the inner surface of the second and a second elastic contact member elastically contacting the second inner surface of the protruding groove that is perpendicular to the first inner surface.
A method for placing a steel pile, wherein the inclination of the steel pile is measured at any time by inserting an inclination measuring device including the elastic contact member.