考虑桩侧阻尼的检测桩基承载力的CASE法  

Considering the Side Damping in CASE Method of Detecting Bearing Capacity for Pile

作　　者：赵亮[1] 孔亮[2] 王燕昌[3] 

机构地区：[1]同济大学航空航天与力学学院,上海200092 [2]青岛理工大学理学院,山东青岛266033 [3]宁夏大学校长办公室,宁夏银川750021

出　　处：《宁夏大学学报（自然科学版）》2010年第3期235-238,共4页Journal of Ningxia University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(50979037);新世纪优秀人才支持计划资助项目(NCET-05-0895)

摘　　要：在分析CASE法基本原理及其假设的基础上,利用土体阻力对桩身传播应力波波幅的影响为指数衰减的规律,得出了计算桩侧动阻力的方法,并改进了CASE法计算单桩承载力公式.工程实例的应用分析表明,改进的CASE法能够应用于侧摩阻力较大的桩,可以减少检测时高估桩基承载力的风险.Based on the analysis of the basic theory and its hypothesis of CASE method,the exponential attenuation law of the soil resistance to the amplitude of the stress wave transmitting in pile is used to calculate the side dynamic resistance of piles,and then the formula of calculating the bearing capacity for single pile in CASE method is improved.The analysis of an engineering example indicates that the improved CASE method is validated and can be applied to the pile with high side friction resistance.The new method can decrease the risk that overrates the bearing capacity of pile in test.

关 键 词：高应变 CASE法 承载力 改进 桩侧动阻力 

分 类 号：U443.15[建筑科学—桥梁与隧道工程]