JPS62134518A - Method for measuring inclination of penetration type steel plate cell body - Google Patents

Abstract

PURPOSE:To make it possible to immediately adjust the direction of a steel plate cell body, by respectively connecting the upper parts of mutually opposed pressure receiving plate sets provided in the direction at a right angle to the line connecting two points opposed to each other and detecting the pressure difference of said sets to measure the inclination of the steel plate cell body. CONSTITUTION:At least two sets each consisting of a pair of mutually opposed liquid receiving bodies 9, a communication pipe 10 and a pressure receiving body 11 are provided in the direction at a right angle to the line connecting a pair of the mutually opposed liquid receiving bodies 9. The upper parts of the mutually opposed pressure receiving bodies 11 are respectively connected to pressure converters 12 and the pressure difference between the pressure receiving bodies 11 opposed to each other is detected to be digitally displayed, for example, on a cathode ray tube. By this constitution, an operator can grasp the drive-in state of a steel plate cell body in a real time. If the steel plate cell body is driven in on the basis of thus measured inclination of the steel plate cell body by the vibration of a vibrohammer while adjustment for vertically driving in the steel plate cell body by various means such as the movement of a crane ship is performed, the vertical drive-in of the steel plate cell body is performed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for measuring the inclination of an embedded steel plate cell body.

[Prior art]

In recent years, as the use of Japan's sea areas has become more diverse and sophisticated, there has been an urgent need to realize deep-water structures with higher precision.In order to meet this demand, pre-integrated steel plates have been developed. The steel plate cell construction method, in which the cell body is driven directly into the seabed, is used.

In this construction method, a steel plate cell body is driven into the steel plate cell body by synchronized operation of multiple vibronic λ hammers, transmitting strong vibration energy evenly to the steel plate cell body, and then filling sand is immediately poured into the steel plate cell body to form a strong wall. It is attracting attention as a system that allows offshore work on deep-water structures to be carried out quickly, accurately, and economically.

However, when driving the steel plate cell body in the above-mentioned embedded steel plate cell construction method, it is important to always maintain the levelness of the steel plate cell body. Control is the most important thing in order to perform an accurate vertical drive.

[Purpose of the invention]

The present invention has been made for the purpose of providing a method for measuring the inclination of a steel plate cell body that can obtain information on the levelness of the steel plate cell body in real time when driving the steel plate cell body in the above-mentioned embedded type steel plate cell construction method. It is something.

[Structure of the invention]

In order to achieve the above object, the inclination measurement method of the embedded type steel plate cell body of the present invention involves erecting liquid storage bodies on two opposing points of a base ring positioned on the steel plate cell body, and are connected by a communication pipe, and a pressure receiving body is provided near the liquid storage body, the pressure receiving body is in liquid communication with the communication pipe and the liquid storage body, and a gas layer is provided on top of the liquid in the pressure receiving body, and these are sealed. At least one more set consisting of a liquid storage body, a communication pipe, and a pressure receiving body communicating with each other is provided in a direction perpendicular to the line connecting the two opposing points, and a pressure transducer is provided above each of the opposing pressure receiving bodies. In conclusion, this method is characterized in that the inclination of the steel plate cell body is measured by detecting the pressure difference between the pressure receiving bodies facing each other.

[Embodiments of the invention]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a method for measuring the inclination of a steel plate cell body during construction using the steel plate cell construction method will be described below with reference to the drawings.

First, in this embedded steel plate cell construction method, as shown in No. 4 = A5, the steel plate cell body 1 integrated in advance is placed on the water surface W.
,L, In order to directly drive into the seabed ground 2 below, after positioning, the upper end of the steel plate cell body 1 is integrated with the base ring 4 by the hydraulic chuck 3, as shown in Figs. A plurality of vibrohammers 6 are interposed between a hanging metal object 5 suspended from a hook 15 of a crane ship (not shown) above, and each vibrohammer 6 is connected by a shaft 7 and synchronized. While operating the steel plate cell body 1 and evenly transmitting strong vibrational energy to the steel plate cell body 1 through the base ring 4, the steel plate cell body 1 is poured into the seabed ground 2, and after the casting, the steel plate cell body 1 is placed in the seabed as shown in Fig. 4-C. The filling process is completed by filling with filling sand 8.

Next, as shown in FIG. 1, liquid storage bodies 9 each containing a liquid such as water are erected on two opposing points of the base ring 4 positioned above the steel plate cell body 1 as described above. The bottoms of these bodies are communicated with each other by a communication pipe 10, and a pressure receiving body 11 is provided near each liquid storage body 9 and is in fluid communication with the communication pipe IO and the liquid storage body 9. A gas FiA is provided and sealed above the liquid reservoir, and is connected to a pressure transducer 12 that converts the pressure applied to each gas layer into a signal. This gas layer A is provided to reduce the influence of vibration since the steel plate cell body 1 is hammered with a vibrohammer.

In addition, in FIG. 1, the dashed line indicates the state when the steel plate cell body l is tilted, and even in this case, the level of liquid in the pair of liquid storage bodies 9 is determined by the action of the communication pipe 10. Since the pressure difference occurs only in the pressure of each gas layer A of the pressure receiving body 11, by detecting this and converting it into an inclination angle, the inclination of the steel plate cell body 1 can be determined. can be measured.

Note that the communication pipe 10 may be a pipe-shaped pipe such as a vinyl pipe, and the liquid storage body 9 may also be a vinyl pipe or the like supported by a stay member.

Each pair of liquid storage bodies 9 and communication pipes 10 facing each other,
As shown in FIG.
The upper portions of each are connected to pressure transducers 12, and the pressure difference between the opposing pressure receiving bodies 11 is detected and displayed digitally on, for example, a cathode ray tube 13 as shown in FIG. This will allow you to understand the pouring status in real time.

Based on the inclination of the steel plate cell body 1 measured as described above, the hanging hardware 5 suspended from the hook 15 of a crane ship, etc.
The vibro hammer 6
When the steel plate cell body 1 is driven by the vibration, the steel plate cell body 1 is driven vertically.

In the above embodiment, 2 cents are provided for each pair of opposing liquid storage bodies 9, communication pipe 10, pressure receiving body 11, etc., but if more cents are provided, more accurate inclination measurement can be achieved. can be done.

〔Effect of the invention〕

As explained above, by adopting the inclination measurement method of the present invention, information on the levelness of the steel plate cell body when driving the steel plate cell body can be grasped in real time, and the orientation of the steel plate cell body can be immediately determined based on that information. can be adjusted, it becomes possible to carry out accurate embedding type steel plate cell construction, and the casting work can be carried out quickly and accurately.

Furthermore, in the inclination measuring method of the present invention, inclination can be accurately measured using a relatively simple device in which the liquid container is mounted on the base ring, and the cost of the measuring device is low and economical.

[Brief explanation of drawings]

Fig. 1 is a schematic side sectional view of an embodiment of the inclination measuring device for a $4 plate cell body during steel plate cell construction using the method for measuring the inclination of a steel plate cell body of the present invention; 3 is a schematic plan view of the figure; FIG. 3 is a drawing showing the display section of the cathode ray tube device that displays the measurement results of the inclination measuring device of FIG. 1;
Figures 4-A, 4-B, and 4-C are a series of side views showing the embedded steel plate cell construction method. 1...&T4 plate cell body, 4... base ring, 9...
...Liquid storage body, 10...Communication pipe, 11...Pressure receiving body, 12...Pressure transducer, A...Gas layer, D...Pressure difference, 12...Liquid.

Claims (1)

[Claims] A liquid storage body is provided upright on two opposing points of a base ring placed on a steel plate cell body, and these are communicated by a communication pipe, and a communication pipe and a liquid storage body are installed near the liquid storage body. A pressure receiving body is provided in fluid communication with the body, and a gas layer is provided on top of the liquid in the pressure receiving body to seal it, and at least one set consisting of a liquid storage body, a communication pipe, and a pressure receiving body communicated with the pressure body is provided with at least one other set as described above. It is installed in a direction perpendicular to the line connecting two opposing points, and the upper parts of these opposing pressure receiving bodies are connected to pressure transducers, and the pressure difference between the opposing pressure receiving bodies is detected to detect the inclination of the steel plate cell body. A method for measuring the inclination of embedded steel plate cell bodies.