SINGLE-PILE FOUNDATION ANTI-SCOURING CONSTRUCTION METHOD BASED ON MOSAIC UNDERWATER CEMENT ROCKFILL

• Main Authors: WANG WEI, CHEN SONGGUI, CHEN HANBAO, HU JIELONG, YAN JUNYI, ZHANG ZECHAO, YU GUANGMING, WANG BAIZHI
• Format: Patent
• Language: English; Japanese
• Published: 02.08.2023
• Subjects: EMBANKMENTS; EXCAVATIONS; FIXED CONSTRUCTIONS; FOUNDATIONS; HYDRAULIC ENGINEERING; SOIL SHIFTING; UNDERGROUND OR UNDERWATER STRUCTURES

To provide an anti-scouring construction method suitable for repairing a damaged scouring pit around a foundation of a bottom protection structure body and an offshore building and capable of effectively reducing and preventing follow-up scouring damage.SOLUTION: A single-pile foundation anti-scouring construction method based on mosaic underwater cement rockfill includes: a step 1 of determining a range of installation construction; a step 2 of dividing the range of the installation construction into a plurality of circular areas forming a mosaic area and determining circle centers of the circular areas as preset installation points; a step 3 of calculating a single pouring amount of an underwater cement-based material and preparing the underwater cement-based material; a step 4 of installing the underwater cement-based material at the preset installation point and completing a single-point installation; and a step 5 of repeating the step 4 till installations at all the preset installation points are completed.SELECTED DRAWING: Figure 1 【課題】破壊された底部保護構造体及び洋上建造物の基礎周りの洗掘ピットの補修に適しており、さらなる洗掘破壊を効果的に軽減、防止することができる洗掘防止施工方法を提供する。【解決手段】打設施工の範囲を決定するステップ１と、打設施工の範囲を、モザイク状領域となる複数の円形領域に分割し、円形領域の円心を所定の打設点として決定するステップ２と、水中セメント系材料の一回の打設量を計算し、水中セメント系材料を準備するステップ３と、所定の打設点で水中セメント系材料を打設し、一点打設を完了するステップ４と、すべての所定の打設点の打設が完了するまで、ステップ４を繰り返すステップ５と、を含むモザイク状水中セメントロックフィルに基づくモノパイル基礎の洗掘防止施工方法。【選択図】図１