桩基动态测试

本文简要介绍了锤击法和CASE法的基本原理、现场测试要点、分析方法及存在问题,根据实践经验对桩基质量、完整性标准作了分类,对影响桩身质量的各种因素加以判别。进而推导出WCASE法,此法引入了桩侧阻尼力,桩体几何尺寸和桩内质点速度对桩基的影响。与CASE法相比,WCASE法不仅简化了推导过程,而且提高了计算精度,增加了计算内容,本法适用于大多数桩基测试。

DYNAMIC TEST OF PILE FOUNDATION

The basic principles, main points of worksite testing, analysis methods and existing problems of the hammering method and CASE method are briefly introduced in this paper. Based on practical experiences, the qualities and perfect standard of pile foundation are classi-fied, and various factors affecting the quality of piles are discriminated, then the WCASE method is inferred. The WCASE method has considered the influence of amortization force beside the pile, geometric dimensions of the pile and velocity of material particles in the pile on the pile foundation. In contrast with CASE method, WCAWE method not only simplified the inferring procedure, but also heightened the calculating accuracy and increased the calcu-lation content. This method is suitable for the testing of most of pile foundations.