JPH10195858A - Plane maintaining device for artificial road surface - Google Patents

Abstract

PROBLEM TO BE SOLVED: To correct irregularity of an artificial road surface by supporting an artificial road surface in each upper end surface of piles through a telescopic actuator, and detecting settlement of piles with an inclination sensor so as to operate each telescopic actuator for extension and contraction. SOLUTION: A telescopic actuator 5 such as a hydraulic jack is assembled in an upper end of each pile 1, which is placed in the ground so as to support an artificial road surface, so as to be operated for extension and contraction in the vertical direction. A X, Y double-shaft type inclination sensor 6 is provided at a central part of a lower surface of each decking 3, and driving command is sent to each telescopic actuator 5 through a computing unit 7. In the case where irregularity is generated in a deck 4 as an artificial road surface by unequal settlement of the piles 1, the inclination sensor 6 detects it, and computing is performed in the computing unit 7, and a required telescopic actuator 5 is driven so that the output of the inclination sensor 6 becomes zero, and the deck 4 is thereby corrected flat. Absolute height level can be maintained by monitoring level position, which is provided in the pile 1, with a measuring unit provided in land on the basis of a gauge, which is provided as a reference point in the pile 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for maintaining a flat surface of an artificial road surface supported by a plurality of piles.

[0002]

2. Description of the Related Art As shown schematically in FIG. 11, an offshore structure such as an offshore oil drilling base or an offshore airport has a large number of piles 1 arranged in the front-rear and left-right directions and driven into the soil 2, and 1
The decking plates 3 are arranged between the upper end surfaces of the vehicle to form an artificial road surface.

[0003] In the above-mentioned marine structure, if the pile 1 undergoes uneven settlement due to an external force such as soil change or ocean waves, the unevenness of the surface of the deck 4 will cause trouble. Therefore, it is necessary to periodically measure the flatness (flatness) of the deck 4 and correct the portion where the unevenness occurs.

[0004] As an example of a conventional method of correcting unevenness on the surface of the deck 4, a sealing material of a seam between the floor plates 3 forming the deck 4 is removed, then the floor plate 3 is removed, and the pile 1 having uneven settlement is caused. A spacer member is arranged at the upper end, and
There is a method in which, after the bottom plate 3 is returned so that the spacer member is interposed on the lower surface of the bottom plate, the sealing material is refilled at the joint between the bottom plates 3.

[0005]

However, in the case of the above-mentioned correction method, since the work such as removal and refilling of the sealing material and movement and resetting of the floor plate 3 becomes very large, when the unevenness is small, The fact is that it is left untouched.

As a method of correcting settlement on land structures, as disclosed in Japanese Patent Application Laid-Open No. Hei 8-27829, a foundation is dug by cutting down a foundation, and a foundation pile is buried in the hole. A hydraulic jack is interposed between the upper end and the lower surface of the foundation, the foundation is lifted by the hydraulic jack, and then a spacer is attached between the foundation and the foundation pile. Some of the holes are backfilled with mortar, but they also require a large amount of work and are not suitable for offshore work.

[0007] Therefore, the present invention is intended to make it possible to easily correct even if unevenness occurs on the artificial road surface due to uneven settlement of the pile supporting the artificial road surface.

[0008]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is to displace an artificial road surface in a vertical direction on a plurality of piles which are driven into the soil to support the artificial road surface at an upper end surface. A telescopic actuator for assembling the telescopic actuator, and installing a tilt sensor for detecting the settlement of each of the piles at a required position, and further transmitting a drive command to each of the telescopic actuators based on the output of each of the tilt sensors. The configuration is provided with.

[0009] When uneven settlement occurs on the pile, the tilt sensor in which uneven settlement has occurred outputs an output. Therefore, based on the output of the tilt sensor, the telescopic actuator is operated by a command from a computing unit. Thereby, the artificial road surface is displaced in the vertical direction at the position of the pile, and the irregularities are corrected.

In addition, a gauge for setting a reference point in the vertical direction is attached to an arbitrary pile and a surveying instrument for observing the gauge is provided, so that the absolute height level of the artificial road surface can be reduced. Easily maintained.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 3 show an embodiment of the present invention. In an offshore structure having a structure similar to that shown in FIG. 11, in the present invention, hydraulic pressure is previously set in the upper end of each pile 1. A telescopic actuator 5 such as a jack is assembled in the up and down direction, and the extension of the telescopic actuator 5 allows the boundary portion of the floor plate 3 to be displaced in the vertical direction. X
A computing unit 7 for installing two-axis type inclination sensors 6 capable of detecting the inclination displacement in the direction and the Y direction, and sending a drive command to each telescopic actuator 5 based on the output of each inclination sensor 6
The configuration is provided with.

In FIG. 1, reference numeral 8 denotes a connecting member for connecting between the piles 1, in FIG. 2, reference numeral 9 denotes a sealing material filled in a joint of the base plate 3, and in FIG. Interface.

In the present invention, when unevenness of the pile 1 causes unevenness on the deck 4 serving as an artificial road surface, the uneven settlement of the pile 1 is detected by the inclination sensor 6, and the signal is calculated by the arithmetic unit 7. Then, by driving the required telescopic actuator 5 so that the output of the tilt sensor 6 becomes zero, the deck 4 is corrected to be flat.

More specifically, for example, as shown in FIG.
It is assumed that seven piles 1 are arranged in the X direction and six in the Y direction. _{Incidentally, P 10, P 11, P} 12 ... are disposed point on the pile 1 coordinates, l ₁ is pile span between the X-direction, l ₂ represents the pile span between the Y-direction.

The output of the tilt sensor 6 is zero when the floor plate 3 is horizontal as shown in FIG.
As shown in (b), when the floor plate 3 is at the upper right, + θ °,
As shown in (c), when the floor plate 3 is to be - [theta] ° when downhill, the upper end level of the pile 1 point P ₁₀ columns arranged in the X direction (X, Z direction perpendicular to the Y direction) in FIG. Assume that the state is as shown in FIG.

[0017] In this case, when a reference pile 1 of the point _{P 10, P 10 = 0 P} 11 = P 10 -l 1 sin θ 1 P 12 = P 11 + l 1 sin θ 2 P 13 = P 12 + l 1 sin the _{θ 3 P 14 = P 13 -l} 1 sin θ 4 P 15 = P 14 + l 1 sin θ 5 P 16 = P 15 + l 1 sin θ 6. Expanding this, P ₁₁ = −l ₁ sin θ ₁ P ₁₂ = l ₁ (−sin θ ₁ + sin θ ₂ ) P ₁₃ = l ₁ (−sin θ ₁ + sin θ ₂ + sin θ ₃ ) P ₁₄ = l ₁ (−sin θ ₁ + sin θ ₂ + sin θ ₃ −sin θ
₄ ) P ₁₅ = l ₁ (−sin θ ₁ + sin θ ₂ + sin θ ₃ −sin θ
₄ + sin θ ₅ ) P ₁₆ = l ₁ (−sin θ ₁ + sin θ ₂ + sin θ ₃ −sin θ
₄ + sin θ ₅ + sin θ ₆ ).

Next, -sin θ ₁ and ≧ 1, (−sin θ ₁ +
sin θ ₂ ) and ≧ 1, (−sin θ ₁ + sin θ ₂ + sin
θ ₃ ) and ≧ 1,... (−sin θ ₁ + sin θ ₂ + sin θ ₃ −
sin θ ₄ + sin θ ₅ + sin θ ₆ ) is compared with ≧ 1. If this value is stake 1 having ≧ 1, the point P _{10 used} as the reference
Will be higher than the pile 1. Therefore, the heights of the pile groups of 1 ≦ α are all compared, and the number of the pile 1 having the largest value of 1 ≦ α is selected from among them. Using this as a reference pile, the values of the other piles 1 are calculated. Similarly, the points P arranged in the X direction
_The reference pile 1 is calculated for the _20th row, the _30th row, the _40th row, the _50th row, and the _60th row. This is shown in macro form in FIG.

FIG. 7 shows that the heights of one row of piles 1 arranged in the X direction are all the same, but there is a level difference between the rows. However, this level difference can be calculated based on the output of the inclination sensor 6 in the Y direction in the same manner as in the X direction. Thus, the point in the Y direction P ₁₀ column, P ₁₁ column, P
Calculate the standard pile 1 of the _12th row, the _13th row, the _14th row, the _15th row, and the _16th row. This is macroscopically shown in FIG. Next, based on an arbitrary point in the X direction, the level difference in the X direction of each point is calculated, and the highest point in the X direction is obtained. in this case,
In Figure 8, a point P _14.

[0020] Thus, between mutual P ₁₄ point P ₁₄ as a reference, that is, the displacement amount for the P ₁₃ and P ₁₅ at the same level as P ₁₄ can be calculated by the inclination distance of the inclination sensor 6. Similarly, P ₁₁ based on the P _12, P _12, based on the P _13,
The displacement amount of P ₁₀ is calculated based on P ₁₁ , and the displacement amount of P ₁₆ is calculated based on P ₁₅ .

[0021] Thus, since all the ₁₀ columns point P aligned in the X direction becomes the same level, further, as a reference level, and calculates the amount of displacement of each point of the rows arranged in the Y direction in a similar procedure. Therefore, by operating the telescopic actuator 5 at each point based on this displacement amount, the coordinates of the pile 1 at each point are all at the same level in the X and Y planes. That is, the deck 4 can be corrected to be flat.

As a method of driving the telescopic actuator 5 by calculating the amount of vertical displacement at each point of the pile 1, for example, the pile 1 located at an arbitrary point is used.
With reference to the above, the level difference of the pile 1 located at another point is obtained, or the operation of obtaining the level difference is performed for each point, the pattern with the smallest level difference is calculated, and the final correction amount is calculated. May be determined.

Next, FIG. 9 shows another embodiment of the present invention. In the structure similar to that shown in FIGS. 1 to 3, a marine structure constructed at a position relatively close to land 11 is shown. A surveying instrument 12 such as a transit is installed on the land 11 side, and an arbitrary one pile 1 is selected.
A gauge 13 for monitoring with the surveying instrument 12 is attached,
An arbitrary level position of the gauge 13 is used as a reference point, and the state between the other piles is monitored by the inclination sensor 6 using this reference point as an initial zero point. When the output of the inclination sensor 6 exceeds a certain range,
The telescopic actuator 5 is operated.

In the case of the structure shown in FIG.
Since the reference point can be monitored at 2, it is possible to maintain not only the flatness of the deck 4 but also the absolute height level.

In the above embodiment, the case where the telescopic actuator 5 is mounted on the upper end of the pile 1 has been described.
That it may be assembled to the middle part of the pile 1,
In the embodiment, the case where the inclination sensor 6 is installed on the lower surface of the floor plate 3 has been described. For example, as shown in FIG. 10A, when the connecting members 8 between the piles 1 are mounted diagonally, When installed at the intersection of the connecting members 8 or when the connecting members 8 are independently attached in the X and Y directions, the uniaxial tilt sensors 6a and 6b are connected to the connecting members 8 in the X direction and the Y direction. The pile 1 may be separately installed on the material 8, and in the embodiment, the example in which the pile 1 is employed in an offshore structure as a structure in which the pile 1 is underwater is shown. However, the pile 1 may be installed on land or in any medium. It can be applied to any structure to be driven, and in the above embodiment, the case where the artificial road surface is kept horizontal is shown, but it can also be applied to an artificial road surface supported at a certain inclination angle with respect to the horizontal , Other gist of the present invention It is needless to say that various changes and modifications may be made within a scope not prolapse.

[0026]

As described above, the artificial road surface maintaining apparatus of the present invention has the following excellent effects. (1) To assemble telescopic actuators for displacing the artificial road surface in the vertical direction, and to detect the settlement of each of the above-mentioned piles, on a number of piles that are driven into the soil to support the artificial road surface at the upper end surface The tilt sensor is installed at a required location, and furthermore, there is provided a computing unit that sends a drive command to each of the telescopic actuators based on the output of each of the tilt sensors. By operating, the unevenness of the artificial road surface can be easily corrected, and the flatness can be maintained. Therefore, it can be easily applied to marine structures. (2) Since a drive command based on the signal of the tilt sensor is sent from the arithmetic unit to the telescopic actuator, the flatness can be automatically corrected. (3) Since the output of the inclination sensor can be taken into the arithmetic unit and processed, the situation of the artificial road surface can be grasped in real time. (4) By performing image processing, the condition of the artificial road surface can be intuitively judged. (5) By attaching a gauge for setting a reference point in the vertical direction to an arbitrary pile and having a surveying instrument for monitoring the gauge, not only the flatness but also the absolute height level can be reduced. Can be maintained.

[Brief description of the drawings]

FIG. 1 is a schematic side view showing an embodiment of an artificial road surface flatness maintaining device according to the present invention.

FIG. 2 is an enlarged sectional view of a portion A in FIG.

FIG. 3 is a control block diagram.

FIG. 4 is a diagram showing an installation position of a stake in XY coordinates.

5A and 5B show an inclination sensor, wherein FIG. 5A shows a case where the output is zero, FIG. 5B shows a case where a positive output is generated, and FIG.
FIG. 4 is a schematic side view showing a case where a negative output is generated.

FIG. 6 is a schematic diagram showing an example of a settlement state of piles arranged in the X direction.

FIG. 7 is a perspective view macroscopically showing a state in which the levels of the piles arranged in the X direction are aligned.

FIG. 8 is a macro perspective view showing a state in which the levels of the piles arranged in the Y direction are aligned.

FIG. 9 is a schematic view showing another embodiment of the present invention.

FIG. 10 shows another installation structure of the tilt sensor.
(A) shows the state where the biaxial type is installed at the intersection of the connecting materials,
(B) is a schematic plan view showing a state where the uniaxial type is installed on the connecting members in the X direction and the Y direction, respectively.

FIG. 11 is a schematic side view showing an example of an offshore structure.

[Explanation of symbols]

 Reference Signs List 1 pile 2 soil 4 deck (artificial road surface) 5 telescopic actuator 6, 6a, 6b tilt sensor 7 arithmetic unit

Claims (2)

[Claims] 1. A telescopic actuator for vertically displacing an artificial road surface is mounted on a number of piles which are driven into the soil to support the artificial road surface at an upper end surface, and the settlement of each of the piles is detected. For maintaining a flat surface of an artificial road surface, further comprising a configuration in which a tilt sensor for performing an operation is provided at a required place, and further, a computing unit that sends a drive command to each of the telescopic actuators based on the output of each of the tilt sensors is provided. apparatus. 2. The artificial road surface maintaining apparatus according to claim 1, further comprising: a gauge for setting a reference point in a vertical direction attached to an arbitrary pile, and a surveying instrument for observing the gauge.