摘要
斜桩嵌岩是在基岩埋藏深度较浅或者基本无覆盖层的地质条件下采用一定斜率的嵌岩灌注桩技术。钢管桩作为嵌岩灌注桩的钢护筒,受海底地形影响,钢护筒的入土深度不足以形成桩基自身稳定的地质条件。文章通过分析一定斜率的钢护筒在受到自身重力、钢护筒内水的重力、波浪力、水流力、土压力等的作用下,通过最不利工况计算出桩的最小入土深度,形成人造基床,达到桩基自身的稳桩措施,解决了在海上裸露基岩或覆盖层较薄的地基上进行斜桩嵌岩施工技术难题,为斜桩嵌岩施工提供了理论依据。
Diagonal rock-embedded pile is the technique of rock-embedded cast-in-situ piles with a certain slope applying to the geological condition of shallow bedrock or without cover layer.Steel pipe pile is used as steel casing of rock-embedded cast-in-situ pile,the depth of the steel casing driven into soil cannot transformed into stable pile foundation due to seabed terrain.By analyzing the status of steel casing with a certain slope under the action of gravity itself,the gravity of water inside the steel casing,wave force,water current force,soil pressure,etc.,and calculating the minimum depth of the pile driven into soil under the most unfavourable working condition,an artificial foundation bed is formed,which can ensure pile stability.The research is a solution to technical difficulties in the construction of diagonal pile embedded into the sea bedrock exposed to air or the foundation with thinner cover layer,also provide a theoretical basis for the construction of diagonal piles embedded in rock.
作者
高小荣
徐少东
金崇强
Gao Xiaorong;Xu Shaodong;Jin Chongqiang(Ningbo Branch of CCCC Third Harbor Engineering Co.,Ltd.,Ningbo Zhejiang 315200,China)
出处
《港口航道与近海工程》
2024年第3期66-70,共5页
Port,Waterway and Offshore Engineering
关键词
斜桩嵌岩
自身稳定
力矩平衡
人造基床
diagonal piles embedded in rock
self-stability
torque balance
artificial foundation bed
