Determining the Pile Bearing Capacity by the Curve Match Method of High Strain Dynamic Testing

2013 ◽  
Vol 438-439 ◽  
pp. 1414-1418
Author(s):  
Wei Ding ◽  
Qing Liu ◽  
Bing Yu Wang ◽  
Kang Kang Sun ◽  
Feng Tao Sui
Keyword(s):  
Bearing Capacity ◽  
Static Loading ◽  
Pile Foundation ◽  
High Strain ◽  
Dynamic Testing ◽  
Design Parameters ◽  
Foundation Engineering ◽  
Match Method ◽  
Error Sources ◽  
Shaft Resistance

This paper determines the bearing capacity of pile and shaft resistance by the curve match method of high strain dynamic testing. By the comparison of bearing capacity of pile between the testing results of static loading and dynamic high strain, the reliability and surveying precision of the curve match method is analyzed, and the error sources and reasons are explored, to reasonably determine the design parameters of pile foundation engineering.

Contrast Analysis about the Result of Static Load Test and High Strain Testing for the Bearing Capacity of Screw Pile Foundation

2014 ◽  
Vol 578-579 ◽  
pp. 663-666
Author(s):  
Qi Hong Wu ◽  
Qing Xu ◽  
Shi Ming Wan
Keyword(s):  
Bearing Capacity ◽  
Pile Foundation ◽  
Static Load ◽  
High Strain ◽  
Dynamic Testing ◽  
Load Test ◽  
Static Load Test ◽  
Screw Pile ◽  
Strain Testing ◽  
Contrast Analysis

Firstly, the technology of screw pile is introduced briefly. It has high body quality, high bearing capacity and wide application prospect. Then, based on engineering examples, the results of static load test and high strain testing for the bearing capacity of SCREW PILE foundation are analyzed contrastively. The bearing capacity value tested by high strain dynamic testing is higher than the static loading test’s with 13%~21%, which should be attached importance in the check and accept and application of the screwed pile. The analysis and sum up of testing results should be considered to the design and application of screwed pile, providing some reference to the quality judge and bearing capacity confirming is another purpose in the paper.

Model Tests of Foundation Bearing Capacity of Sandy Soil and Pile Foundation Bearing Capacity

2014 ◽  
Vol 580-583 ◽  
pp. 113-117
Author(s):  
Shi Jie Lu ◽  
Hua Dong Chen ◽  
Wei Chen ◽  
Tong Xiang ◽  
Xie Feng Hong
Keyword(s):  
Bearing Capacity ◽  
Sandy Soil ◽  
Pile Foundation ◽  
Soil Mechanics ◽  
Model Tests ◽  
Foundation Engineering ◽  
Foundation Settlement ◽  
Load Bearing ◽  
Model Device ◽  
Weight Loading

Using self―made model device, researchers studied the characteristics of foundation settlement of sandy soil and pile foundation load―bearing in sandy soil. Through weight loading, researchers analyzed the phenomenon of foundation settlement. Then, researchers embedded friction piles in sand, so as to analyzed pile foundation bearing capacity. The methods and results of the research can provide guidance for teaching of Soil mechanics and foundation engineering.

Testing and Analysis of Bearing Capacity on Pile Foundation

2014 ◽  
Vol 501-504 ◽  
pp. 234-237
Author(s):  
Yan Peng Zhu ◽  
Ze Xue Bao ◽  
Tian Zhong Ma ◽  
Chun Jing Lai
Keyword(s):  
Bearing Capacity ◽  
Pile Foundation ◽  
High Speed ◽  
Static Load ◽  
Rapid Development ◽  
Load Test ◽  
Foundation Engineering ◽  
Static Load Test ◽  
Volume Weight ◽  
Pile Testing

The application of pile foundation is promoted by the rapid development of the high speed railway, highway, high-rise buildings and big volume weight of building. However, the static load test and low strain test play a very important role in pile foundation inspection and ensurement of the quality of pile foundation engineering. In this paper, combined with the engineering of the basis of a hospital in lanhou, the author analyzed the results of 7 test piles static load test and a large number of low strain test and summarised pile testing contents and methods. At the same time,the bearing capacity of anchor pile in static load test is discussed.

Pile Bearing Capacity Improvement by Post-Grouting on Tip and Side

2011 ◽  
Vol 261-263 ◽  
pp. 1313-1318 ◽  
Author(s):  
Ji Feng Liu ◽  
Xiu Qin Cui
Keyword(s):  
Bearing Capacity ◽  
Static Loading ◽  
High Strain ◽  
Dynamic Test ◽  
Differential Settlement ◽  
Loading Test ◽  
Static Loading Test ◽  
Capacity Improvement ◽  
Post Grouting

For verifying pile bearing capacity improvement by post-grouting on tip and side and the decrease of building settlement, 10 tip and side post-grouting and 2 unpost-grouting piles are tested by low strain dynamic test, static loading test, stess distribution monitoring and high strain dynamic test, and the building settlement is monitored. It is indicated that all piles length and integrity are meeting the challenge, the post-grouting piles bearing capacity are at least 70% improved than that of unpost-grouting piles, designing pile bearing capacity as 8800kN is safer, the building maximal settlement and the differential settlement is satifying. The preliminary designed 904 piles are reduced to 531 by adopting post-grouting technique and about 20% cost of pile engineering is saved, the proper grouting stata choosing, the accurate grounting volume and pressure controlling in the post-grouting constrution process are needed.

scholarly journals Effect of Helical Geometry on the Axial Compressive Capacity

2020 ◽  
Vol 5 (6) ◽  
pp. 717-723
Author(s):  
Yofy Kurniawan ◽  
Maulid M. Iqbal ◽  
Ratna Dewi
Keyword(s):  
Bearing Capacity ◽  
Static Loading ◽  
Pile Foundation ◽  
Clay Soil ◽  
Loading Test ◽  
Pile Capacity ◽  
Round Shape ◽  
Static Loading Test ◽  
Helical Geometry ◽  
Definition Of

Helical pile is an invention in pile foundation with a main objective of increasing pile capacity. According to Prasad, et.al (1996), definition of helical pile is a pile foundation that equipped with one or more helix that has a round shape, attached to the shaft with a certain distance between helixes. The aim of this study is to understand the effect of helixes number to the bearing capacity. In this study, empirical model is validated with the static loading test on three different type of helical pile: 1) single shaft, 2) helical pile with the same diameter of helixes and, 3) helical pile with different diameter of helixes on clay soil. The diameter of helixes are 15 cm, 20 cm, and 25 cm with distance between helixes 50 cm. The result shows the bearing capacity increase of single shaft to helical pile 252% - 369%. Moreover, the comparison of bearing capacity between helical pile with the same diameter of helixes and helical pile with different diameter of helixes is explained in this study.

scholarly journals Numerical studies of soil base deformations from reconstructed multi-storey building to nearby buildings

2021 ◽  
Vol 274 ◽  
pp. 03020
Author(s):  
Ilisar Mirsayapov ◽  
Ildus Shakirov ◽  
Daniya Nurieva
Keyword(s):  
Bearing Capacity ◽  
Pile Foundation ◽  
Design Parameters ◽  
Reinforced Concrete Frame ◽  
Foundation Soil ◽  
Load Bearing ◽  
Concrete Frame ◽  
Numerical Studies ◽  
Need To Evaluate ◽  
Storey Building

During the building reconstruction with floors addition, there is a need to evaluate the building frame and foundation soil bearing capacity, especially if there are deviations from the design parameters. As a result of the field and numerical studies, we determined the basic change patterns in the stress-strain state of the 12-storey building load-bearing structures with a monolithic reinforced concrete frame due to uneven pile foundation deformation. We also found the influence degree of the existing deviations from the design parameters to the structures bearing capacity. The research results can be applied in reconstruction conditions with a significant increase in the load on the existing load-bearing elements of the building and on the pile foundation.

scholarly journals The Bearing Capacity of a Group-Pile Foundation with Inclined Piles under Lateral Loading.

2002 ◽  
pp. 97-107 ◽  
Author(s):  
Makoto KIMURA ◽  
Hiroshi MAKING ◽  
Katsunori OKAWA ◽  
Hiroyuki KAMEI ◽  
Feng ZHANG
Keyword(s):  
Bearing Capacity ◽  
Pile Foundation ◽  
Lateral Loading ◽  
Group Pile
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