摘要
原体试验是检验地基处理方法对场地条件的适应性、实际效果和优化桩设计的重要手段.通过对试桩的桩身完整性、单桩承载力、桩体试块强度、桩间土承载力、复合地基承载力等的试验分析,比较了地基处理前后地基土工程指标变化、承载力理论计算值与实际测试结果的差异,研究了复合地基桩土应力变化关系,验证了复合地基处理方案的可行性,为工程桩优化设计提供了依据.
Prototype testing is a key method for examining foundation treatment＇ s actual effect or it＇ s suitability to field conditions and to optimizational piles design. By a series of tests,such as piles＇ integrality,bearing capacity of single pile,sampling lump strength of the piles, the bearing capacity of the soil surrounding plies and the bearing capacity of the composite foundation, the engineering index of the ground before foundation treatment is contrasted with after foundation treatment, these are analyzed, the discrepancy of bearing capacity got from calculating and field testing, the stress distribution is investigated between the piles and the soil, the practicability of the foundation treatment method is evaluated,and it is provided reliable evidence for improving on pile＇ s design.
出处
《华北水利水电学院学报》
2008年第1期96-98,共3页
North China Institute of Water Conservancy and Hydroelectric Power
关键词
复合地基
桩土应力比
原体试验
composite foundation
stress ratio of pile to soil
prototype test
