预应力混凝土管桩和空心方桩轴心受压承载力计算讨论  

Discussion on the calculation methods of axial compression bearing capacity of prestressed spun concrete piles and prestressed spun concrete square piles

作　　者：汤关祚[1,2] 匡红杰[1,2] 

机构地区：[1]苏州混凝土水泥制品研究院有限公司,苏州215004 [2]苏州中材建筑建材设计研究院有限公司,苏州215004

出　　处：《建筑结构》2014年第8期6-9,43,共5页Building Structure

摘　　要：对预应力混凝土管桩和预应力混凝土空心方桩(均简称预应力桩)桩身轴心受压承载力设计值(简称轴压设计值)的两种计算方法、预应力桩综合折减系数及预应力桩成桩工艺系数的取值进行了讨论,说明了根据国内现行的一些技术规程、标准、图集等计算的预应力桩轴压设计值与实际工程经验不符,并对其提出了较合理的计算方法和观点。研究结果对预应力桩的合理应用和技术规程、标准、图集等的编制或修订具有一定意义。The two different calculation methods for the axial compression bearing capacity design value （axial compression design value for short） of the prestressed spun concrete piles and prestressed spun concrete square piles（ both prestressed spun piles for short）, the value of synthetical reduction coefficient and the value of the pile construction process coefficient of the prestressed spun pile were discussed. Meanwhile, it was pointed out that the axial compression design values of the prestressed spun pile by calculation methods of the current domestic technical regulations, standards, atlas and so on were not consistent with the engineering experience values. Some reasonable calculation methods and views for the design values were put forward to solve this problem. The results have certain significance for the reasonable application of prestressed spun piles and establishments or revisions of technical regulations, standards and atlas.

关 键 词：预应力桩 轴心受压承载力设计值 综合折减系数 成桩工艺系数 

分 类 号：TU525[建筑科学—建筑技术科学]