Axial Uplift Behavior of Belled Piers in Sloping Ground

Lu, Xian-long; Qian, Zeng-zhen; Yang, Wenzhi

doi:10.1520/gtj20150202

Cited by 9 publications

(7 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Once the field tests are completed, the load-displacement curves of the five belled piers are counted as shown in Figure 4. e characteristics of these curves are similar to those of the previous tests, including belled piers under axial uplift loading in Gobi gravel or loess sloping ground [12,13,22,23], micropiled raft under uplift, and compression loading in cohesive soil [25]. Similarly, the approximation of these load-displacement curves can be divided into three stages, as shown in Figure 5: (1) an initial linear stage, (2) a curvilinear transition stage, and (3) a final linear stage.…”

Section: Test Results and Failure Criteriasupporting

confidence: 75%

“…Similar to other field tests of cast-in-place concrete foundations [12,13,22,23], the construction process of test foundations can be divided into three steps:…”

Section: Foundation Installation Processmentioning

confidence: 99%

“…Jiang et al [11] studied the behavior of piles in sloping ground under undrained lateral loading conditions by finite element analysis. In addition, the representative field tests were completed by Lu et al [12] and Qian et al [13]. Based on two full-scale uplift load tests conducted on belled piers in the arid loess sloping ground, Lu et al discussed the uplift resistance of foundation on slope from the characteristics of load-displacement curve, failure mode of soil, and ultimate uplift load.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Estimating the Uplift Bearing Capacity of Belled Piers Adjacent to Sloping Ground by Numerical Modeling Based on Field Tests

Yangchun

Cheng

Zheng

et al. 2020

Advances in Civil Engineering

View full text Add to dashboard Cite

In order to evaluate the uplift bearing capacity of belled piers beside slopes, a series of numerical simulations are carried out based on field tests data. First, a number of uplift loading tests of full-scale belled piers are carried out on the project site of transmission line in Anhui Province, China. Second, a slope-foundation model for numerical modeling is proposed and calibrated based on field tests data. The behavior of belled piers adjacent to slopes subject to uplift load is studied by numerical modeling. The impact of three parameters, including distance (a) from the belled pier to the crest of the slope, slope angle (β), and embedment depth (h) of the belled pier, has been investigated on the uplift capacity of the belled pier. Based on the simulation results, an attenuation coefficient (ω) is put forward for evaluating the reduction of uplift bearing capacity of the belled pier. The results show that the coefficient ω is negatively correlated with distance a and depth h, and the influence of distance a is greater than that of depth h according to the results of variance analysis, but the difference is not significant by F test. Moreover, the empirical equation between attenuation coefficient ω and three key factors a, β, and h had been presented by a series of fitting.

show abstract

Section: Test Results and Failure Criteriasupporting

confidence: 75%

“…Similar to other field tests of cast-in-place concrete foundations [12,13,22,23], the construction process of test foundations can be divided into three steps:…”

Section: Foundation Installation Processmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Estimating the Uplift Bearing Capacity of Belled Piers Adjacent to Sloping Ground by Numerical Modeling Based on Field Tests

Yangchun

Cheng

Zheng

et al. 2020

Advances in Civil Engineering

View full text Add to dashboard Cite

show abstract

“…Based on the characteristics of these curves, the ultimate uplift load of the foundation can be determined by Energies 2020, 13, 2066 9 of 22 many methods, including: (1) mathematical fitting analysis [33]; (2) image analysis [34]; and (3) limited displacement [35]. In this study, the L 1 -L 2 method, a method of image analysis, which is selected in the relevant researches similar to the loading conditions [28][29][30]. This method divides the curve into three stages: the initial elastic stage (OA), the transition stage (AB), and the final failure stage (BC).…”

Section: Results Of Freezing Test: Temperature Field and Soil Frost Hmentioning

confidence: 99%

“…On the tenth day of the test cycle, the loading process is usually carried out. The slowly maintained loading method that is adopted by many researchers [27][28][29][30] is used in this work: first, the single-stage load increment is determined according to 10% of the predicted ultimate load; then, the static monotonic loading without cycle is carried out, and the displacement increment of the foundation after each load is recorded, until a certain displacement rate is reached. The time of each loading stage is maintained at 30 minutes, and then the next loading increment will be applied when the foundation displacement tends to be stable.…”

Section: Test Procedure: Freezing and Loading Processmentioning

confidence: 99%

Uplift Bearing Capacity of Cone-Cylinder Foundation for Transmission Line in Frozen Soil Regions, Using Reduced-Scale Model Tests and Numerical Simulations

et al. 2020

View full text Add to dashboard Cite

In order to analyze the uplift bearing capacity of cone-cylinder foundation for transmission line in frozen soil regions, a series of reduced-scale modeling tests and numerical simulations are carried out. First, three reduced-scale cone-cylinder foundations with the same sizes, that are five times smaller than the prototype, are made and then loaded under uplift load at −5 • C, −10 • C, and −15 • C, respectively. On this basis, the foundations of nine sizes are modeled and loaded by numerical simulation. The impact of three dimension factors, including the ratio of depth to bottom width (λ = h t /D t ), the top diameter of the cone-cylinder (d), and the bottom diameter of the cone-cylinder (D), on the uplift bearing capacity of foundations have been investigated. The results reveal that, for cone-cylinder foundation, the uplift bearing capacity is obviously affected by the freezing temperatures and the foundation sizes. The capacity is negatively correlated with the former. Whereas the order of correlation with the latter is as follows: λ, D, and d based on the comprehensive results of range and variance analysis, but none of them are the significant factors, according to the F-test. Furthermore, three failure mechanisms of frozen soil are distinguished and named T-mode, V-mode, and U-mode, respectively. Based on the above results, the bearing mechanism of cone-cylinder foundation in frozen soil is elaborated in detail.

show abstract

Investigation on Uplift Behavior of Rock-Socketed Belled Piles in Horizontal and Inclined Ground Using 1-g Model Test and 3D Numerical Method

Wang,

Hu,

Guo

et al. 2024

Rock Mech Rock Eng

View full text Add to dashboard Cite

Axial Uplift Behavior of Belled Piers in Sloping Ground

Cited by 9 publications

References 47 publications

Estimating the Uplift Bearing Capacity of Belled Piers Adjacent to Sloping Ground by Numerical Modeling Based on Field Tests

Estimating the Uplift Bearing Capacity of Belled Piers Adjacent to Sloping Ground by Numerical Modeling Based on Field Tests

Uplift Bearing Capacity of Cone-Cylinder Foundation for Transmission Line in Frozen Soil Regions, Using Reduced-Scale Model Tests and Numerical Simulations

Investigation on Uplift Behavior of Rock-Socketed Belled Piles in Horizontal and Inclined Ground Using 1-g Model Test and 3D Numerical Method

Contact Info

Product

Resources

About