摘要
研究目的:通过2种试验方法的对比和综合分析,提出用非标准固结试验方法测定先期固结压力的修正方法,提高了试验的生产效率,与铁路客运专线勘察设计工期要求相适应。研究方法:通过对标准和快速固结试验结果分析对比,确定次固结修正法和K值修正法的修正方法,对修正后的结果与标准试验结果进行了误差分析,根据数理统计学原理进行检验分析。研究结果:对比试验数据表明,12 h快速固结试验经两种方法修正后,以95%置信度与标准固结试验所得结果无显著差异,试验工期由9 d可缩短为5 d。研究结论:对比试验研究提高了试验效率,缩短了试验工期,其结果已经纳入了《铁路工程土工试验规程》(TB 10102—2004),并被铁路勘察设计系统应用于铁路客运专线工程的土工试验中,有效地缓解了地质勘察设计的工期压力。
Research purposes： Through making comparison of 2 testing methods and comprehensive analysis modified method is proposed in this paper to determine Pc by a non - standardized consolidation testing, of them, a which will improve the testing efficiency and meet the requirements of the schedule of survey and design of railway passenger dedicated line.
Research methods： The modified methods of secondary consolidation and K value were determined through making analysis and comparison of the standardized testing results with that of fast consolidation testing. Then the analyses were made for the errors between the modified results and standardized testing results based on the statistical method.
Research results： The comparative data of the testings show that, after being modified by the 2 methods, the results 12 -hour fast consolidation test are well correspond to those of standardized consolidation test with trusting degree of 95% and there are no significant differences between the 2 methods. The duration of testing can be shortened from 9 days to 5 days.
Research conclusions：The tests results show that the 12 -hour fast consolidation test mehtod can be used to determine the preconsolidation pressure of subsoil, which will improve the productivity efficiency of highpressure consolidation test and can be widely used in construction of railway passenger dedicated line.
出处
《铁道工程学报》
EI
北大核心
2007年第8期23-26,共4页
Journal of Railway Engineering Society
关键词
地基土
先期固结压力
试验
对比
假设检验
次固结
修正
subsoil
preconsolidation pressure
test
comparason
assumptive test
secondary consolidation
modification
