Technical gazette, Vol. 27 No. 3, 2020.
Preliminary communication
https://doi.org/10.17559/TV-20180814044704
An Analysis on Comparison of the Static Load Test Performed to Post-Grouted Pile Foundation with Chinese, American and European Standard
Xianbin Huang
; Civil Engineering, Sichuan Agricultural University, Member of Sichuan Higher Education Engineering Research Center for Disaster Prevention and Mitigation of Village Construction, Sichuan 611830, China
Yujiao Mei
; Civil Engineering, Sichuan Agricultural University, Member of Sichuan Higher Education Engineering Research Center for Disaster Prevention and Mitigation of Village Construction, Sichuan 611830, China
Yahong Wangren
; Civil Engineering, Sichuan Agricultural University, Sichuan 611830, China
Tangyong Li
; Transportation bureau of xingwen county, yibin city, sichuan province,644000, China
Bo Lei
; Guang'an Vocational Technical College, Guangan, Sichuan 638500, China
Wei Zhao
; Civil Engineering, Sichuan Agricultural University, Member of Sichuan Higher Education Engineering Research Center for Disaster Prevention and Mitigation of Village Construction, Sichuan 611830, China
Abstract
In the paper, a study is conducted to pile foundation post-grouting and static load test, in which the tested value is used to compare with the standard of China, America and Europe. Taking Li-yuTuo bridge as study object, the trial piles - 3c2 and 3c4 with length of 33 meters and diameter of 1.2 meter are selected. The vertical bearing capacity of single pile is designed as 33000 kN which thereafter is enhanced using post-grouting. The on-site static load test is employed to evaluate the bearing capacity of pile foundation that is obtained being 39220 kN through self-balanced test. It is indicated through standard comparison that the bearing capacity calculated by China and America standard is akin to each other, turning to be excessively conservative and much less than the theoretical value of Europe. The Chinese standard shows bearing capacity after grouting is increased by 78.8 percent compared with pile foundation being not grouted. The post-grouting trial value is increased by 18.8 percent more than design value, 81.4 percent than theoretical value of general pile and 1.44 percent than theoretical value of post-grouting.
Keywords
bored pile; foundation; post-grouting; static load test; self-balanced test; vertical bearing capacity
Hrčak ID:
239109
URI
Publication date:
14.6.2020.
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