Abstract：Research purposes:Currently，low-strain integrity testing and cross-hole sonic logging have been universally applied for testing integrity of pile，but these two methods have their limits for testing long pile integrity. The long piles，which are constructed in the loose layer of the quaternary, are used widely in the foundation of bridge in high- speed railway. According to the integrity test of long concrete pile，a new test method has been studied to remedy the limitation of the existing method.
Research conclusions:(1)A new test method，vertical logging，has been presented in this paper. The elastic wave of vertical logging transmitted from the deep pile can be reliably received and the lengths of testing pile can be up to 70 m. (2)This paper has proposed the calculate methods of wave velocity，relative amplitude attenuation and frequency of vertical logging.(3)The new method to judge the integrity of pile has been presented. The signal transmitted from the pile bottom can be detected in the test which includes length more than 50 m of 126 piles and the effect is good. The problem of pile integrity testing to test the long piles，which are longer than 40 m，has been solved to some extent. This method has obtained invention patent. ( 4)The research results have applied in the field of civil engineering.
杨怀玉,任春山,赵明龙. 竖向透射法长桩完整性检测新技术研究[J]. 铁道工程学报, 2015, 32(8): 31-34.
YANG Huai-yu，REN Chun-shan,ZHAO Ming-long. Research on the Vertical Logging-a New Technology of Long Pile Integrity Test. 铁道工程学报, 2015, 32(8): 31-34.
Zhang Qixin. Research on Loading Behavior and Method to Simulate the Behavior of Lengthy Pile[D]. Nanjing:Hohai University ,2008.
Sun Shuli. Research on Bearing Characteristics of Large-diameter and Overlength Bored Pile[J]. Chinese Journal of Railway Engineering Society, 2011 (10);66-71.
[5]
JGJ 94-2008，建筑桩基技术规范[S]
TB 10218-2008，Specification for Non-destructive Testing of Railway Piles[S]].
Yang Huaiyu, Sun Shuli, Ren Chunshan. Testing Technology for Railway Geotechnical Engineering [ M]. Beijing:China Railway Publishing House ,2011.
杨怀玉.采用弹性波透射方式检测混凝土桩桩身完整性 的方法:中国，ZL 2008 1 0154315. 6 [ P ] . 2010-11-17 Yang Huaiyu. The Method of Using Elastic Wave Transmission Testing Concrete Pile Integrity:China, ZL 2008 1 0154315. 6 [ R ].2010-11-17.
[7]
张忠苗.软土地基超长嵌岩桩的受力性状[J].岩土工 程学报，2001(5);552-556
Tang Fenghua, Ji Xiaohai, Mao Yijia. Research on the End Bearing Capacity Features of Large-diameter Bored Piles[J].Modern Transportation Technology, 2010(5);51-55.
Zhang Zhongmiao. The Endurance of Overlength Pilesin Soft Soil[J].Chinese Journal of Geotechnical Engineering , 2001( 5) ; 552-556.
[10]
张齐兴.超长桩基承载性状及承载力计算方法研究 [D].南京:河海大学，2008
[1]
孙树礼.大直径超长灌注桩承载特性试验研究[J].铁 道工程学报，2011(10):66-71
JGJ 106-2014，Technical Code for Testing of Building Foundation Piles[S]].
[4]
JGJ 106-2014，建筑基桩检测技术规范[S]
JGJ 94-2008，Technical Code for Building Pile Foundation[S].
[6]
杨怀玉，孙树礼，任春山.铁路岩土工程检测技术[M]. 北京:中国铁道出版社，2011.
Yang Jibao, Zhong Zhengxiong. Research on Load Transfer Mechanism of Overlength Pile[J].Chinese Journal of Geotechnicai Engineering, 1998(6):108- 112.
2015, Vol. 32 
版权所有 © 2014 《铁道工程学报》编辑部