单桩承台拉梁设计方法  

Design Method for the Base Beam Connected to Single Pile Cap

作　　者：丁翠红[1] 顾建文 

机构地区：[1]浙江工业大学建工学院,杭州310014 [2]中国联合工程公司,杭州310022

出　　处：《建筑结构》2005年第5期47-49,共3页Building Structure

摘　　要：针对弹性长桩,采用“m”法求解弹性挠曲微分方程,求得桩的抗弯刚度,把单桩(单排桩)等代成一抗弯刚度相同的两端刚接的柱子,与上部结构以及拉梁一起进行共同作用内力分析,从而求出桩柱的偏心荷载对拉梁的影响。通过算例的计算可知,在规范允许的最大桩偏位情况下,拉梁的弯矩和配筋比无偏位的有大幅度的增加,并提出了拉梁内力计算方法。For the long elastic pile,the m method is used to solve the elastic deflection differential equation and the bending rigidity can be obtained.The single pile can be replaced by one fixed at two ends with the same rigidity,and be analyzed with the upper structure and the base beam.The influence of the eccentric load on base beam can be calculated.The analysis of an example shows that the bending moment and the reinforcement of base beam increases greatly in the scope of allowable maximum deflection stipulated by the code.The calculation method of the internal forces of base beam is put forward.

关 键 词：拉梁 设计方法 桩承台 内力计算方法 抗弯刚度 微分方程 “m”法 内力分析 共同作用 上部结构 偏心荷载 单排桩 大幅度 弹性 偏位 长桩 柱子 刚接 单桩 配筋 弯矩 

分 类 号：TU473.1[建筑科学—结构工程] TU312.1[建筑科学—土工工程]