應用研究 2025年 第卷 第18期
DOI: 10.7672 / sgjs2025180118
密實卵石地質條件下鋼管樁沉樁施工技術
陳亞峰，郭彬
作者簡介：
陳亞峰，副總經理，高級工程師，E-mail: 13776565636@139. com作者單位：
中交三航局第三工程有限公司，江蘇南京 210009摘要：
薩爾瓦多位于火山活動頻繁的拉丁美洲地區，擬建碼頭所在海域的海底由火山灰和碎石堆積而成，近岸為卵石灘。受涌浪長期影響，海底上層形成 5—— 8m 厚密實卵石層，其中部分區域卵石粒徑較大，下層為安山巖和凝灰巖。基于工程實際，分析了該地質條件下的施工可行性，提出了沖孔再沉樁工藝，并采用高應變檢測技術評估樁身完整性。研究表明，沖孔再沉樁工藝在密實卵石層地質環境中具備良好穩定性和施工效果。
English：
El Salvador is located in a region of Latin America that is prone to frequent volcanic activity.The seabed in the area where the proposed pier will be constructed consists of volcanic ash and graveldeposits,with the nearshore area characterized by pebble beaches. Due to the long-term influence ofsurge waves, a dense pebble layer with a thickness of 5 —— 8m forms in the upper seabed. In some areas,the pebble size is relatively large,while the underlying layers consist of andesite and tuff. Based onpractical engineering considerations, this paper analyzes the feasibility of construction under thesegeological conditions and proposes a punching and pile-driving process. High-strain testing techniqueswere employed to assess the integrity of the piles. The study shows that the punching and pile-drivingprocess exhibits good stability and construction effectiveness in the geological environment of dense pebblelayer.