一种改进型的管桩桩尖及其在倾斜地层中的应用

• 作 者: 张一飞 彭元生
• 机 构: 中国有色金属工业长沙勘察设计研究院,
• 出 处: 工程勘察
• 发表日期: 2004年期
• 关键词: 桩尖 管桩 地层 缺陷桩 斜桩 倾斜地层 防治措施 桩尖改进 高强度混凝土 沉桩

针对预应力高强度混凝土管桩在上软下硬的倾斜地层中施工时容易发生斜桩这一问题,笔者根据多项工程实践,通过详细分析产生斜桩的施工影响因素、常用桩尖的工程特点与沉桩时桩尖的工作机理,提出了施工技术防治措施,并设计了一种改进型的凹弧十字型管桩桩尖以解决斜桩问题。经工程实践证明,能够达到降低斜桩率、提高工程质量和降低生产成本等目的。

For the prestressed high-strength concrete pipe pile in the soft under the hard slope of the inclined stratum prone to construction problems, the author based on a number of engineering practice, through a detailed analysis of the impact of the construction of inclined pile factors, commonly used pile tip engineering Characteristics and working principle of pile tip when driving pile, put forward construction technology prevention measures, and design an improved concave arc cross pipe pile tip to solve the problem of inclined pile. Proved by the engineering practice, can achieve the purpose of reducing the rate of inclined piles, improve the quality of the project and reduce the production cost.