JPS60105715A - Consolidating and levelling weight for underwater rubble-mound foundation - Google Patents

Abstract

PURPOSE:To effectively consolidate and level through application of vibration on a weight plate, by a method wherein a support form fabricated from steel materials, a weight plate secured to a lower end, and a removable vibrator applying vibration on the weight plate, are provided, and graduations are marked in the direction of the height of the support form. CONSTITUTION:A wire rope 17 connected to a vibrator 15 is engaged with a hook 18 of a crane to lift up and down a consolidating and levelling weight (a). Vibraton is exerted on a weight plate 2 through a steel pipe 9 with the aid of the vibrator 15. A top end is consolidated through application of vibration on the weight plate 2 as the lifting-down height of the weight (a) is regulated, the height of the consolidated top end is measured again, and the top end is further consolidated for compaction until the measurement attains a design height. This permits detection of a consolidating distance of the top end and the direction of projection and recess, and since the support form has a low center of gravity and high safety, consolidation, which is conducted in a condition that the support form is erected on the top end, can be smoothed and a consolidated work can be effectively carried out.

Description

[Detailed Description of the Invention] [Field of Application of Industry-1-] The present invention provides underwater rubble 7J rl, which is used for installing and fixing structures such as caissons in horizontal construction of breakwaters, etc.;
This relates to a weight used to consolidate and level a.

[Conventional technology]

Conventionally, as this kind of weight, ill, muscle ml non-critic 1
・Hp, 11 or L; A vibrating pile driver is fixed to the head of a hollow gauging made of i'4171, and a vibratory compaction device is rigidly connected to the lower end of the reinforcing bar τ non-crete, 1-shoe. known (rTPAIIC published by the Ministry of Transport and Construction of the USSR)
nOPTHOE c, T p OM T EΔb′C
'rBO' December 1973 issue).

[Problems to be solved and attempted by the invention] -1- In the vibration compaction device described above, the shoe at the lower end of the hollow casing is made of unreinforced concrete and is the weakest compared to steel. Because there is
The vibration compaction capacity is not necessarily sufficient, and cracks occur in the shoe itself, especially after repeated use over a long period of time.This also applies to hollow gauging, even if it is made of reinforced concrete. The same thing can be said.

In addition, the vibratory compaction device described in -J- has a vibrating pile driver fixed to the I'if1 part of the hollow casing.
Therefore, the entire equipment consisting of the reinforced concrete shoe 1 rigidly connected to the bottom +6:H, the hollow filter shing, the vibrating pile driver, and the reinforced concrete 1/setting is assembled as a single unit. It is recognized that if the piles are not handled properly, it is not only inconvenient for the company's fortunes, but also that it is uneconomical to install a vibrating pile machine in each hollow casing individually.

[Means for solving problems]

The present invention fixes a weight plate made of an extremely thick steel plate to the lower end G of the support frame made of steel assembly, and also provides a removable vibrator that vibrates the weight plate, and is a 1-segment scale starting from the bottom of the weight plate.

[For production]

Therefore, according to the present invention, it is possible to perform the desired consolidation and leveling effectively and over a long period of time without reducing the capacity by applying vibrations to the pile made of extra-thick steel plate, and the vibrator can be used as needed. In the detached state, it can be used as a free-falling weight consisting of a support frame with a weight plate, and the weight and the vibrator can be used separately.

[Example] The consolidation and leveling weight of the present invention can be used in accordance with the leveling width of the large end of the underwater rubble foundation, the shape or size of the structure such as a caisson to be installed, the water depth, the capacity of the crane ship, etc. It is manufactured in advance using a caisson wheel, etc. using shaped steel materials and extra-thick steel plates.

That is, in the present invention, the consolidation and leveling hammer a is constructed by forming a support frame 1 provided with a scale scale 3 in the height direction, and placing beams 5 and braces 6 on four supports 4 at appropriate intervals. They are assembled into a prismatic tower shape, and a weight plate 2 is fixed to the lower end.

The weight plate 2 is formed into a rectangular shape using an extra-thick steel plate, and has steel protrusions 7 for tamping arranged in rows at required intervals on the lower surface, and water that penetrates vertically between the protrusions 7. A series of holes 8 are provided to reduce resistance during lifting and lowering, and to prevent small rubble from being blown away by water pressure.

The scale 3 is manufactured separately from the support frame 1 and has a scale of 1 cm starting from the bottom surface of the weight plate 2.
It is attached to the outer surface of each of the pillars 4 so that at least the upper part protrudes from the water surface when it is suspended from the top of the underwater rubble foundation.

Reference numeral 9 denotes a steel pipe whose lower end is fixed to the center of one side of the weight plate 2, and a pair of hanging tools 11, 1 are provided on the top plate 1o at the upper end.
1 faces the upper opening of the support frame 1, and has a ventilation hole 13 at the upper end and a water passage hole 14 at the lower end to prevent the steel pipe 9 from generating buoyancy.

Reference numerals 15 and 15 denote a pair of electric vibrators, each equipped with a hydraulic chuck 16.16.
The wire lobe 17, which is connected to the vibrator 15 and 15, is held on the hanging device 11 by the crane.
By placing JJI on the machine, this consolidation and leveling weight a can be lifted and lowered, and the vibrator 15.
15, it is possible to apply vibration to the weight plate 2 via the steel pipe 9.

19 is the power cable and chuck for the vibrator 16°]6
This is an oil pipe for use.

Consolidation and leveling of the underwater rubble foundation using the weight a having the above configuration is carried out as follows.

First, by putting in the required amount of rubble, an underwater rubble foundation with the top slightly higher than 51 steps is formed. Then, use the flagpole 20 to display the positions on both sides of the crown with a little more margin than the planned width, and make sure that the crown is a little higher than the planned height by adjusting the excess or deficiency of rubble while making the necessary inspections. .

In addition, a weight a suspended by a wire lobe 17 from a hook 18 of a crane of a crane ship is lowered onto the underwater rubble foundation, and the top is adjusted to the extent that the supporting frame l protrudes from water and The amount of strain (higher than the planned height) and the direction of the unevenness are detected, and the weight a is lifted up and down to the required height and allowed to fall freely for the required number of times, and when it is stood up, Roughly level the surface to the extent that the weight a does not wobble excessively.

Next, the surveyor 23 checks a fixed point, for example, the existing caisson 2.
Using the surveying instrument 22 installed at 1, the height of the crest was measured by reading the scale 3 displayed on the 1ia pillar 4 suspended and erected at the crest, and the exact value to be pressed was determined. Notify the crane ship operator using a transceiver, etc.

Based on the numerical value, the operator applies vibration to the hanging weight plate 2 while adjusting the lifting height of the weight a to apply ring pressure to the top, and then measures the top height with this ring pressure again and plans. By further compressing and compacting until the height is reached, and then continuing the above operations, the top surface of the underwater rubble foundation can be consolidated and leveled to the planned height.

In addition, in this embodiment, a case is shown in which the support frame is formed into a prismatic shape and the weight plate is formed into a rectangular shape, but the support frame and the weight plate are not limited to the above shapes. may each be formed into a circular shape.

Further, the scale scale may not be separate from the support frame, but the scale may be directly displayed on a required portion of the support.

Furthermore, the vibrator may be installed at a required part of the support frame, or may be placed directly on the weight plate I- in a watertight structure.

[Result of invention glue]

According to the consolidation and leveling weight of the present invention, the supporting frame is the water 1118
Since the height corresponding to the structure such as a geison installed on the stone foundation is ¥J, - the width pressure of the top ☆ 1j, 1 depending on the above water protrusion and inclination when the foundation 1 is erected. Heb
L and the uneven direction can be detected, and the quality of the workpiece can be determined by the scale scale provided at the required part of this support frame with the bottom of the weight plate as the starting point.
Since it is made of 4A assembly and has a weight plate made of extra-thick steel plate fixed to the lower end, the center of gravity is low and stability is high. Can be implemented effectively.

In particular, as mentioned above, the weight plate is made of extremely thick steel plate.
! It has a long life and does not have 1f6 (like those made of reinforced concrete), so it is a floating part that can be used repeatedly over a long period of time, and it is easy to manufacture.

In addition, since the vibrator is removable, it can be operated separately from the support frame with a weight plate, and it is also possible to remove the vibration 1 shallow and use the support frame with a weight plate called fQ as a weight, and use it as a free fall. It can also be conveniently used for rough leveling as described in the embodiment.

[Brief explanation of the drawing]

Figures 1 and 2 are a perspective view and a front view of the consolidation and leveling weight of the present invention.
The figure shows only the weight plate cut away, and FIG. 3 is an explanatory view of the state of implementation of consolidation leveling using the single weight. ■... Support frame, 2... Weight plate, 15... Vibrator, 3...
ri scale scale. Spear 1

Claims (1)

[Scope of Claims] 1. Not installed on the underwater 13 stone foundation 1- [Steel having a height that is compatible with the structure of the construction site] 7 (Assembled support frame and the lower end of the support frame) A fixed weight plate made of extra-thick '5141 cloth, a rotatable screwdriver that vibrates the weight plate, and the necessary parts of the above-mentioned support frame (☆, -1-marked on the weight plate) Underwater rubble 2, whose general characteristic is that it consists of a large scale.
(A weight for compaction and leveling.