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工程地质学报  2017, Vol. 25 Issue (6): 1603-1609    DOI: 10.13544/j.cnki.jeg.2017.06.024
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球型全流触探仪的机理研究及工程应用综述
杨岩1,2, 刘松玉1,2, 蔡国军1,2, 彭鹏1,2, 郑金伙3, 江涛3
1. 东南大学岩土工程研究所 南京 210096;
2. 江苏省城市地下工程与环境安全重点实验室 南京 210096;
3. 福建省建筑设计研究院 福州 350100
REVIEW ON PENETRATION MECHANISM AND APPLICATION OF BALL PENETROMETER IN OFFSHORE ENGINEERING
YANG Yan1,2, LIU Songyu1,2, CAI Guojun1,2, PENG Peng1,2, ZHENG Jinhuo3, JIANG Tao3
1. Institute of Geotechnical Engineering, Southeast University, Nanjing 210096;
2. Jiangsu Key Laboratory of Urban Underground Engineering and Environmental Safety(Southeast University), Nanjing 210096;
3. Fujian Institute of Architectural Design and Research, Fuzhou 350100
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摘要 近年来,随着全球海洋开发战略的逐步开展,越来越多的工程建设和试验研究将在海洋中进行,为了掌握海底的土体环境,静力触探(CPT)技术在国内外海洋工程领域中的运用变得更加重要。本文根据国内外大量文献中相关海洋原位测试技术的报道,对海洋静力触探的国内外发展历程进行总结,重点阐述和研究了一种适用于海底淤泥质土的球型全流触探仪。分析结果表明,球型全流触探仪在海洋岩土工程勘察中具有很好的应用前景,且集测量数据精确可靠、试验方法多样化、理论解析丰富全面等优点于一身;利用球型全流触探仪能够有效避免较大的实测数据修正,贯入机理清晰严谨,开展循环贯入试验可以评价土的重塑特性,变速率贯入试验在评价应变速率和现场土体强度以及测试中土体固结状态之间的关系上具有优势;结合现场试验,对比分析传统CPT和球型全流触探仪的试验结果,并考虑海底软土的性质,摸索出一种可停靠球型探头新形式。
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关键词海洋岩土工程   球型探头   全流触探仪   贯入机理     
Abstract: In recent years, with the development of global marine strategies, engineering construction and experimental studies have been increasingly carried out in both offshore and onshore. In order to evaluate the soil properties on the seabed, the cone penetration test(CPT)technology has become much more important in the domestic and international marine engineering. This paper summarizes the development of marine cone penetration test according to extensive literatures domestic and oversea. Besides, the relevant research contents of the ball penetrometer are summarized. The ball penetrometer is now used oversea for offshore site characterization in soft sediments as an alternative or supplement to conventional CPT tests. The analytical results show that the ball penetrometer is superior to the cone in quantifying the strength of soft clay, as well as evaluating the remoulded strength and the effect of penetration velocity by means of cyclic remoulding tests and variable rate penetrometer tests. Based on the full-flow mechanism, it is worthwhile to compare the in situ testing data between ball penetrometer and CPT.Furthermore given the nature of soft soil at seabed, this paper introduces a stoppable piezoprobe at shallow depths for offshore engineering.
Key wordsOffshore engineering   Ball penetrometer   Full-flow   Mechanism of penetration   
收稿日期: 2016-11-10;
基金资助:

国家重点研发计划课题(2016YFC0800201),全国优秀博士学位论文作者专项资金项目(201353),江苏省杰出青年基金项目(BK20140027)资助

通讯作者: 蔡国军(1977-),男,博士,教授,主要从事多功能孔压静力触探等现代原位测试技术方面的研究工作.Email:focuscai@163.com     E-mail: focuscai@163.com
作者简介: 杨岩(1993-),男,硕士生,主要从事海洋原位测试技术等方面的研究工作.Email:triggerl@126.com
引用本文:   
. 球型全流触探仪的机理研究及工程应用综述[J]. 工程地质学报, 2017, 25(6): 1603-1609.
. REVIEW ON PENETRATION MECHANISM AND APPLICATION OF BALL PENETROMETER IN OFFSHORE ENGINEERING[J]. Journal of Engineering Geology, 2017, 25(6): 1603-1609.
 
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