圆形截面预应力钢筋混凝土悬臂式支护桩的分析与应用  

Analysis and Application of Circular Section Prestressed Reinforced Concrete Cantilever Retaining Piles

作　　者：刘力英[1] 莫海鸿[2] 曹洪[2] 

机构地区：[1]广州市市政工程设计研究院,510060 [2]华南理工大学建筑学院土木工程系,广州510640

出　　处：《建筑结构》2005年第2期42-44,共3页Building Structure

摘　　要：从悬臂式支护桩的受力特征和预应力钢筋混凝土的工作原理出发 ,对圆形截面预应力钢筋混凝土悬臂式支护桩的截面特征、强度和构造措施进行分析 ,推导出单侧配筋公式 ,提出配筋的合理角度以及极限抗弯强度与桩径的关系。通过工程实例 ,证实了悬臂式预应力支护桩既可以节省钢筋用量 ,又可以控制桩顶位移。Based upon the working principle of prestressed reinforced concrete(PRC), as well as the loading and deformation mechanism of circular section cantilever retaining piles, the section character, the strength and the details of the pile are discussed. The formulas of reinforcements are derived and the appropriate angle of reinforcements and the relation between the ultimate bending strength with the diameter of the pile are given. The conclusion that the circular PRC cantilever retaining pile can save steel and control deformation is drawn through an example.

关 键 词：支护桩 预应力钢筋混凝土 圆形截面 配筋 构造措施 桩顶位移 极限抗弯强度 受力特征 控制桩 工程实例 

分 类 号：TU473[建筑科学—结构工程] TU375[建筑科学—土工工程]