KR200185669Y1 - Base structure of a breakwater or embankment for the ground having a soft layer deeply - Google Patents

Abstract

In laying the foundation of breakwater or shelter that is built in deep ground of soft ground, hollow blocks are stacked in the deep ground of deep ground and spaced apart by a certain distance and interposed between them. Submerge the soft ground and replace the high quality sand, but make the foundation of the breakwater or the revetment of the structure with multiple layers of hard polyflofilene mat between the high quality sand, and save the construction cost and the construction period dramatically. It is about devising to build a foundation of solid breakwater in the ground.

Description

Base structure of a breakwater or embankment for the ground having a soft layer deeply}

The present invention relates to the structure of the lower foundation when constructing a breakwater or a revetment, and particularly to the foundation structure of a breakwater or a revetment that is constructed in a deep ground of a soft layer. As a method of forming a foundation when the ground is a soft ground, the whole soft ground layer is excavated and replaced with high-quality sand or other soil in this space, or an arbitrary load of heavy load is applied to a position where the body is forcibly constructed. Substituting a method of increasing the soil soil density by forcibly consolidating and sinking the soft ground at the foundation position, various grouting methods of discharging various grout chemicals at high pressure into the ground to form a solid body, or a constant thickness Install polyflourene mat (MAT) to minimize the settlement and to increase the load Mat laying method, which is used to induce even settlement while being dispersed on the mat, has been selectively used according to the field situation.

However, in the case of general soft ground, the soft ground is improved by various soft ground improvement methods as described above. However, when the depth of the soft layer is about 30 to 50M deep, the construction of the simple soft ground improvement method as described above is practical. It is very difficult, because in order to completely excavate the soft ground and replace it by the length of the breakwater, the grouting method that requires huge construction cost and air due to the excavation and replacement of a huge amount of ground and forms a solid in the ground is also large scale. In addition, it is also impossible to adopt a deep-depth soft ground improvement method.

In addition, although forced sedimentation methods are used a lot, problems such as unevenness of sedimentary bodies and consolidation around breakwaters caused by settlement have raised the surface of the seabed. Are frequently exposed.

1 is a cross-sectional view of a breakwater foundation structure implemented by the present invention

(Code description of main parts of drawing)

W.B breakwater system or raft 1. Foundational edge 2. Soft ground

3. Offshore slope 3a. Inshore slope 4. Hollow block

5,5a. Good quality sand 10,10a. Underground shield bulkhead

11.polyfluoropropylene mat

The present invention complements the safety caused by the above-mentioned forced substitution or irregular settlement, and solves the difficulties of construction such as preventing settlement and equal settlement by upper load, while dramatically reducing construction cost and shortening of air and reliable foundation. Based on the accompanying drawings as a design for a soft ground foundation structure having a depth of a breakwater having a strength or a deep revetment as follows.

In the soft ground (2) having a depth of 30 to 50M from the base end (1) (sea bottom), which is a substructure of a breakwater body or a wreck (WB), which is built on the deep ground of the soft ground, the soft ground External sea side inclined surface 3 and inner sea side inclined surface 3a of the breakwater WB, which are inclined with a constant gradient with respect to the base end 1, which is the upper end 1 of (2) and the bottom end 1 of the breakwater body WB. The lower end of each of the) is approximately four center walls inside the hollow and a constant thickness and width to be located in the center, and the hollow block (4) opened up and down to the required depth (in one embodiment as shown in the drawing 10M) Subsurface formation barriers 10 and 10a are placed on the bottom of the inclined surface (3) (3a) of the outer sea side and the inland sea side of the breakwater body (WB) by substituting the soft soil inside and replacing it with high quality sand (5). And the base end 1 of the soft ground 2 interposed in the space between the underground shielding bulkheads 10 and 10a on the inner and outer sea sides. As a result, about 3/5 of the depth of the underground shield bulkheads 10 and 10a is excavated and replaced with high-quality sand 5a, but the height of the hollow block 4 constituting the underground shield partitions 10 and 10a. Between and buried in a layer of hard polyflofilene mat (pp MAT) 11 to form a ground breakwater or raft foundation of deep ground of the soft layer of the present invention, and based on this foundation a breakwater or Construct construction of shelter.

By constructing the foundation of breakwater or revetment on the deep soft ground with the above structure, the vertical load (P) of the breakwater body (WB) is increased without the need to excavate and replace a huge amount of soft ground. It is laminated in multiple stages and applied to the high quality sand 5a filled between the mat 11 and the mat and the mat 11, and this vertical load P is equally distributed and is used as the underground shield bulkhead 10 and 10a. Force (P1) (P2) also extends to) but is shielded by underground shield bulkheads (10) (10a), which are upright in the ground, so no basic displacement occurs. It has an excellent effect to build a solid breakwater system and a base of rafts.

Claims (1)

In forming the foundation on the deep soft ground where the breakwater or revetment is built, a plurality of hollow blocks 4 are softly formed at the bottom of the inner and outer sea side slopes 3 and 3a of the breakwater body having a predetermined gradient. Buried upright in the ground, substituting the inside of the hollow block (4) with good quality sand (5) to install underground shield bulkheads (10) and (10a), respectively, and the soft ground of the space between the underground shield bulkheads (10) and (10a). A breakwater or raft foundation structure of a ground having a deep depth of a soft layer formed by stacking (2) into high quality sand (5a) and interposing a plurality of hard polyflofilene mats (11) between high quality sands.