JPS5938364B2 - How to build a wave-break structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a construction method for accurately setting an underwater restraint point at an arbitrary position when constructing a structure underwater using piles and blocks.

Conventionally, when building structures by driving piles underwater, underwater welding is a method for creating precise restraint points at the required locations, but there are currently many uncertainties in this method.

This invention is a construction method for accurately and easily setting underwater restraint points.

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

FIG. 1 is a longitudinal cross-sectional view of an example of this wave-break structure.

For example, a steel pile 1 is driven into solid ground at the bottom of the water, and from a hanging device 10 attached to the top of the pile, the circular blocks 4 and 5 are suspended as shown in FIG. As shown in Figure 5, it consists of an inner ring 5 and an outer ring 4,
As an example, the inner ring 5 is divided into three equal parts, the inner ring 5 and the outer ring 4.
As shown in Figures 3 and 4, the inner ring 5 is in contact with the taper at a certain angle, and its inner diameter is slightly larger than the diameter of the pile.
is mounted on an annular plate 6 fixed to the outer ring 4, and the outer ring 4 is further connected to the wire 2 and the inner ring 5 to the wire 3.

After suspending the supporting ring rings 4 and 5 at a predetermined water depth, a circular hole block γ is dropped with the pile as the center and stacked on the outer ring 4 until the top of the pile is reached.

During this time, the wire rod is temporarily fixed to the hanging device 10.

At this point, the member 8 to which the fixing device 11 is attached is passed over the top of the pile to the upper block as shown in FIG. The divided ring 5 of the inner ring enters between the outer ring 4 and the pile, produces a wedge effect, and comes into close contact with the pile.

If sufficient tension is applied, it will form a reliable restraining fulcrum and at the same time prestress the stacked oval hole blocks.

Furthermore, the prestress and wedge effect eliminate the relative displacement between the pile and the circular hole block caused by waves, so the quality of the concrete and grout that fills the voids can be expected to improve after hardening.

[Brief explanation of the drawing]

Fig. 1 is a vertical cross-sectional view of a structure in which restraint blocks are stacked on core piles driven into the four vertices of a square by the method of the present invention, Fig. 2 is an enlarged view of the suspension device section attached to the top of the pile, and Fig. Figure 3 is a vertical cross-sectional view of the circular block while it is being hung, Figure 4 is a vertical cross-sectional view of the circular block set in the fixed position, Figure 5 is a plan view of the circular block, and Figure 6 is a vertical cross-sectional view of the circular block while it is being hung. The figure is a plan view of a member to which the fixing device is attached, and FIG. 1 is a sectional view of the member to which the fixing device is attached.

Claims (1)

[Scope of Claims] 1. When constructing an underwater wavebreak structure using piles and blocks, in order to set the support base that supports the weight of the wavebreak body on the pile, the toroidal body that will become the support base is set as 2. It is divided into two parts, the outer torus is a female one, and the inner torus is a male taper that is combined to form a complete torus on the outside, and the inner torus is divided into several equal parts. Several wire rods fixed to each of these toroids are suspended from the top of the pile with the pile as the center. When the wire rods reach the designated position, the wire rods are temporarily fixed to the support device at the top of the pile, and the outer circle is suspended from the top of the pile. Blocks with circular holes in the ring body are stacked, and after the blocks reach near the top of the pile, a member for finally fixing the wire is passed over the top of the pile to the upper block, and this is used to receive the reaction force. A construction method that reliably forms an underwater restraint point by tensioning the wire until a sufficient rust effect occurs on the inner split torus and the torus is brought into close contact with the pile.