摘要
桩身内力静压试验是了解基桩的内力分布规律、确定基桩质量和单桩极限承载力最可靠的方法,但试验周期长、费用高和加载能力有限。利用ANSYS软件,土体采用Drucker-Prager本构模型,在桩-土之间设置无厚度接触单元,结合工程实例,对某基桩静载内力试验进行了数值模拟。结果表明,通过合理地设定计算参数,计算值与试验结果吻合良好,对桩土作用试验结果的扩展分析具有重要参考价值。
Static loading internal force test is the most reliable method to comprehend the internal forces distribution, confirm the quality and vertical ultimate bearing capacity of foundation piles, but it＇s test period is long, the cost is high and the capacity to load is limited. With examples of project, static loading internal forces test for some foundation piles was simulated by ANSYS software. The Drucker-Prager constitutive model was used to simulate soil. Between soil and pile, the non-thickness contact units was set up. The results have indicated that the calculated and experimental results are good agreement. It is the important reference to analyze the pile-soil interaction test results.
出处
《建筑技术开发》
2008年第11期28-29,34,共3页
Building Technology Development
关键词
桩-土相互作用
桩身内力试验
有限元
数值模拟
Soil-pile interaction
Static loading internal force test for foundation pile
Finite element method
Numerical simulation
