Reliability Analysis of Vertical Bearing Capacity of Pile Based on Static Load Tests

2011 ◽  
Vol 243-249 ◽  
pp. 5745-5750
Author(s):  
Shi Qing Liu ◽  
Jun Jie Zheng ◽  
Zhi Jun Xu ◽  
Xiao Ya Bian
Keyword(s):  
Bearing Capacity ◽  
Static Load ◽  
Design Parameters ◽  
Building Foundation ◽  
Range Theory ◽  
Load Tests ◽  
Sample Range ◽  
Single Piles ◽  
Vertical Bearing ◽  
Vertical Bearing Capacity

Based on the sample range theory in Mathematical Statistics, the general standard variance of vertical capacity of single piles is evaluated according to the data from static load tests, and a method is presented to evaluate the reliability of vertical bearing capacity of pile, of which distribution obeys normal distribution. Finally, results from the case study indicate that it is effective to evaluate the reliability using the method presented in this paper, and the number of tested piles specified in Technical Code for Testing of Building Foundation piles and determining sample range can be interpreted reasonably in theory. Meanwhile, it can give good references to designers to determine the design parameters according to testing piles.

Finite Element Analysis of the Vertical Bearing Capacity of Single Piles in Tianjin Soft Soil Areas

2012 ◽  
Vol 446-449 ◽  
pp. 1387-1390
Author(s):  
Shi Lun Feng ◽  
Yu Ming Zhou ◽  
Jun Li ◽  
Pu Lin Li
Keyword(s):  
Finite Element ◽  
Bearing Capacity ◽  
Static Load ◽  
Soft Soil ◽  
Element Analysis ◽  
Finite Element Software ◽  
Single Piles ◽  
Vertical Bearing ◽  
Vertical Bearing Capacity

The ABAQUS finite element software is used to calculate the vertical bearing capacity of single piles in Tianjin, and the finite element results are compared with the data gained through the in-situ static load pile foundation tests. It is found that the Young’s modulus of the soil at the bottom of the pile could have a important role in improving the vertical bearing capacity of single piles.

Research on the Relationship between SPT and the Ultimate Vertical Bearing Capacity of Jacked Pile in Shenyang District

2011 ◽  
Vol 71-78 ◽  
pp. 3308-3311
Author(s):  
Xiang Ruan ◽  
Ren Yu Zuo
Keyword(s):  
Bearing Capacity ◽  
Empirical Formula ◽  
Standard Penetration Test ◽  
Penetration Test ◽  
Initial Stage ◽  
Engineering Requirement ◽  
Load Tests ◽  
Vertical Bearing ◽  
Vertical Bearing Capacity ◽  
The Relationship

Though the wide applications of jacked pile in engineering in Shenyang district, the problem is also exist in engineering for the capacity of the jacked pile is hard to account. The relationship between the standard penetration test and the ultimate vertical bearing capacity of jacked pile is established in this paper; also an empirical formula is put forward for calculating the ultimate vertical bearing capacity of the jacked pile in this district with blow count of standard penetration test (SPT). The engineering examples indicated that the empirical formula is feasible because the calculating bearing capacity of the silent pipe pile is coincided with the static load tests. The calculated results satisfy the engineering requirement andt can be concluded that the method is also convenient to choose the diameter and length of the pile during the initial stage of design.

Experiment Study on Bearing Capacity of Muddy Dolostone Foundation

2014 ◽  
Vol 501-504 ◽  
pp. 269-274
Author(s):  
Yang Chen ◽  
Zhi Hong Huang
Keyword(s):  
Bearing Capacity ◽  
Compression Strength ◽  
Static Load ◽  
Experiment Study ◽  
Axis Compression ◽  
Vertical Bearing ◽  
To Come ◽  
In Suit ◽  
Vertical Bearing Capacity ◽  
Water Ratio

In recent decades，there have been detailed investigations of bearing capacity of muddy dolostone through in-suit static load and uniaxial compressive strength．By analyzing test datas，the vertical bearing capacity, uniaxial compression and water ratio were studied．The bearing capacity which will be performed on slight , medium、strong weathering ,muddy dolostone．By the fact that the single axis compression strength and the water ratio experiment study to the slight weathering 、the medium weathering 、the strong weathering muddy dolostone, explain that making use of fitting equation to come to oppose guessing the bearing capacity of the foundation, is feasible，above all for medium and strong weathering muddy dolostone．

scholarly journals A Novel Numerical Method for Calculating Vertical Bearing Capacity of Prestressed Pipe Piles

2020 ◽  
Vol 2020 ◽  
pp. 1-20
Author(s):  
Rongbao Chen ◽  
Jichao Zhang ◽  
Zeyu Chen ◽  
Meixiang Gu
Keyword(s):  
Bearing Capacity ◽  
Static Load ◽  
Hard Rock ◽  
Soft Rock ◽  
Load Test ◽  
Static Load Test ◽  
Soil Layers ◽  
Vertical Bearing ◽  
Vertical Bearing Capacity ◽  
Rock And Soil

A novel method for calculating the vertical bearing capacity of prestressed pipe piles with the acceptable error was proposed and verified. Soils at the pile side and end were, respectively, simulated by an elastic-plastic model and a new double-line (at soft rock and soil layers) or triple-line model (at hard rock and soil layers); then, a mechanical model was established for simulating vertical bearing capacity of prestressed pipe piles, and the corresponding calculation process was carried out. The values of pile side resistance, pile end resistance, and pile end elastic displacement were first obtained from the results of high-strain dynamic testing (HSDT) and then were imported into the proposed numerical model for calculating the vertical bearing capacity of prestressed concrete pipe piles. The static load test was carried out to verify the numerical results. Besides, 20 piles were tested at two typical test sites (soft and hard rock bearing strata), of which 8 piles were arranged at the soft rock bearing stratum site and 12 piles were arranged at the hard rock bearing stratum site. The numerical results achieved from an empirical formula were also used for making a comparison. The values obtained by the proposed method were highly close to those achieved from the static load test with an error of within 10%. The outcomes indicated that the proposed numerical method can be potentially applied to predict the bearing capacity of prestressed pipe piles.

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