利用CPT结果进行可打入性分析  

Pile driveability analysis by using CPT results

作　　者：康思伟 贾志远[2] KANG Si-wei JIA Zhi-yuan(Shanghai Branch, China National Offshore Oil Corporation, Shanghai 200335, China School of Civil Engineering, Tianjin University, Tianjin 300072, China)

机构地区：[1]中海油上海分公司,上海200335 [2]天津大学建筑工程学院,天津300072

出　　处：《中国港湾建设》2016年第10期36-39,43,共5页China Harbour Engineering

基　　金：自然科学重点基金(51239008);国家973项目(2014CB046800);国家重大专项(2011ZX05056002-01)

摘　　要：桩的可打入性研究一直是海洋工程中普遍关心的问题,如何准确地预测桩的可打入性是研究的重点,桩的可打入性与打桩土阻力有直接关系。根据某海域的现场打桩记录,运用GRLWEAP反算出打桩土阻力,与常用的基于CPT计算方法的结果进行对比分析,分析每种方法在计算土阻力时的准确性,并对各种方法的结果进行评价。计算结果显示,大直径桩在砂土中打桩也会发生土塞闭合;在本算例中,CPT方法用来进行土阻力预测时,不同的方法具有各自的特点。The study of pile driveability has been a universal concern in ocean engineering, and how to accurately predict piledriveability is the key of the research, pile driveability has a direct relationship with soil resistance driving. According to thepile driving records of a certain area, we calculated the soil resistance driving by the GRLWEAP, and compared with thecommonly used calculation method based on the CPT results, analyzed the accuracy of each method when calculating the soilresistance, and evaluated the results of various methods. Calculation results show that the large diameter pile can also occur soilplug closure when piling in sands. In this example, the CPT method is used to predict the soil resistance, and the differentmethods have their own characteristics.

关 键 词：CPT 土阻力 桩的可打入性 土塞 

分 类 号：U655.544.1[交通运输工程—港口、海岸及近海工程]