混合桩水平抗弯刚度研究  

Study on the Horizontal Bending Rigidity of Hybrid Pile

作　　者：程晔[1] 夏佩云[2] 王法武[1] 

机构地区：[1]南京航空航天大学土木工程系,210016 [2]济南铁路局,250001

出　　处：《特种结构》2015年第6期79-82,共4页Special Structures

基　　金：国家自然基金青年基金(批准号:51208255);交通运输部应用基础研究项目(2013319759060);江苏省自然科学基金青年基金(BK20130797)

摘　　要：为提高水平承载能力,深水桥梁的钻孔灌注桩成桩后保留了施工时的钢护筒,形成混合桩。混合桩已用于工程实践,但对其水平承载性能缺乏系统研究。本文考虑混合桩的结构特点,采用有限元方法进行数值模拟,分析了含钢率、泥皮的弹性模量及泥皮厚度等因素对其水平抗弯刚度的影响。根据数值模拟的结果,进行多元线性回归拟合分析,得出了混合桩水平抗弯刚度的数学计算模型。In order to improve the horizontal bearing capacity, steel casing is reserved after bored pile of bridge in deep water be finished. Bored pile and its steel casing composed hybrid pile. While the hybrid pile has been applied in the practice, the horizontal bearing performance of it hasn＇t been studied systemically. According to the characterization of the hybrid pile, and simulated by the method of finite element, it was and analyzed that how the horizontal bending rigidity of hybrid pile is affected by the facts such as steel ratio, elastic modulus and thickness of slurry. In terms of the results of simulation, the computation model of the bending rigidity of hybrid pile was proposed by the analysis of multiple linear regression.

关 键 词：混合桩 水平抗弯刚度 数值模拟 

分 类 号：TU473.1[建筑科学—结构工程]