预应力高强混凝土矩形支护桩的变形分析  

Deformation analysis of rectangular prestressed high strength concrete supporting pile

作　　者：陆磊[1,2] 黄广龙[1] 周文苑[3] 

机构地区：[1]南京工业大学交通学院,江苏南京210009 [2]昆山华-岩土勘察工程有限公司,江苏苏州215300 [3]南京市测绘勘察研究院有限公司,江苏南京210019

出　　处：《南京工业大学学报（自然科学版）》2014年第1期60-65,共6页Journal of Nanjing Tech University(Natural Science Edition)

基　　金：江苏省产学研联合创新基金(BY2012031)

摘　　要：为了更准确地计算预应力高强混凝土矩形支护桩在实际工作中的位移变形值,根据矩形支护桩抗弯试验的实测数据,采用最小二乘法对其挠度曲线进行拟合,计算出矩形支护桩受弯试验过程中的实际抗弯刚度,并采用结构力学的方法对抗弯刚度计算值进行验证,进而提出矩形支护桩的修正抗弯刚度计算方法。结合实际工程,采用修正抗弯刚度计算矩形支护桩位移变形,计算结果与实测值较为接近,结果表明采用修正抗弯刚度计算矩形支护桩位移变形更为合理。In order to accurately achieve the deformation of rectangular pre-stressed high strength concrete supporting pile, the actual flexural rigidity of pile was calculated by test data, and deflection curves were fitted by a least square method.The result was then verified by structural mechanics method and the modi- fication method was proposed to calculate the flexural rigidity of piles.Finally ,the method was used to cal- culate the deformation of rectanglar piles in practical construction, it led to similar results as test results. Results showed that it is more reasonable to calculate the deformation of rectangular supporting pile by the modified flexural rigidity method.

关 键 词：矩形支护桩 抗弯刚度 最小二乘法 变形分析 

分 类 号：TU378[建筑科学—结构工程]