摘要
为了对现浇混凝土大直径管桩等新桩型开展更深入的研究,并考虑到室内小模型试验存在的比尺效应等问题,自行开发了大型桩基模型试验系统,为进行室内桩基足尺试验研究提供了可能。该试验系统主要由模型槽、加载系统、测量系统以及试验所需的土料和桩体等组成。鉴于较少开展室内足尺试验,提出了试验土料的制备方法,并通过现场取样、CPT等试验对土体的质量进行了检验,证明了该方法的可行性。此外,利用该试验系统进行了现浇混凝土大直径管桩室内足尺静载荷模型试验,通过将试验结果与现场实测结果进行对比,表明利用试验系统进行桩基室内足尺试验是可行的。
In order to make further researches on the new types of piles, a large-scale pile foundation system is established to make full-scale model tests and overcome the disadvantages of small model tests, such as scale effect. The developed system consists of the test room, loading system, measuring system and soils. The preparing method of soils, including control indices, laying methods and result detecting, is introduced. Meanwhile the pile-making method and quality test method are also shown. The final test results show that the quality of the soils can meet the requirements of the following experiments. Furthermore, by use of this model test system, the full-scale load tests on PCC piles are done, and the results indicate that the full-scale pile foundation test is feasible.
出处
《岩土工程学报》
EI
CAS
CSCD
北大核心
2009年第3期452-457,共6页
Chinese Journal of Geotechnical Engineering
基金
国家自然科学基金项目(50679017
50778063)
江苏省自然科学基金创新学者攀登项目(BK2008040)
关键词
模型试验
足尺试验
桩基试验
系统开发
model test
full-scale test
pile foundation test
system development
