Field Test Investigation of the Pile Jacking Performance for Prefabricated Square Rigid‐Drainage Piles in Saturated Silt Sandy Soils

Wang, Xiangying

doi:10.1155/2019/4587929

Cited by 6 publications

(3 citation statements)

References 22 publications

(13 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…With the increase in seismic acceleration under high seismic intensity, the anti-liquefaction performance of the composite foundation stabilized with stone columns was obvious in shaking table model tests (Qu et al [17]). Wang [18] found that gravel piles reduced the amplitude of the peak pressure, caused by piling, and quickly dissipated the excess pore water pressure in the liquefiable layer. Based on the results of 1 G laboratory-scale shaking table tests, Dinh et al [19] showed that the compaction and drainage effects of gravel piles were the main factors to reduce the liquefaction of the foundation.…”

Section: Introductionmentioning

confidence: 99%

Study on Seismic Response in Deeply Deposited Saturated Liquefiable Soil Reinforced by Using Subarea Long-Short Gravel Piles

Junding

Zhang

et al. 2021

Applied Sciences

View full text Add to dashboard Cite

To avoid large deformation, resulting from liquefaction, in inclined and deeply deposited liquefiable soil, it is necessary to design economical and reasonable reinforcement schemes. A reinforcement scheme employing subarea long-short gravel piles was proposed, and it was successfully applied in the embankment construction of the Aksu-kashgar highway. To reveal its underlying mechanism and effect on the seismic performance of the highway, the dynamic responses of natural foundation and two kinds of reinforced foundations were analyzed and compared under this scheme, using the program FEMEPDYN. Results showed that both the seismic subsidence and the excess pore pressure ratios were far less in the foundation reinforced with isometric gravel piles and in the foundation reinforced with subarea long-short gravel piles, compared with that in natural foundation. Therefore, the potential hazards of liquefaction were overcome in these two kinds of reinforced foundations. Furthermore, it was obvious that the shielding region only formed within the foundation reinforced with subarea long-short gravel piles. With the shielding effect, the proposed reinforcement scheme employing subarea long-short gravel piles not only eliminated liquefaction in deeply deposited liquefiable soil, but it also demonstrated an outstanding advantage in that the total length of gravel piles used was greatly reduced compared to the total length in the isometric gravel piles scheme and the interphase long-short gravel piles.

show abstract

Section: Introductionmentioning

confidence: 99%

Study on Seismic Response in Deeply Deposited Saturated Liquefiable Soil Reinforced by Using Subarea Long-Short Gravel Piles

Junding

Zhang

et al. 2021

Applied Sciences

View full text Add to dashboard Cite

show abstract

“…Steel sheet pile cofferdams have been widely used for river and coastal revetments, piers, and other support structures built in the water because of their convenience of installment, cost efficiency, and reusability. Research has been conducted into the applications of steel sheet piles [1][2][3][4]. e problem of corrosion was found in those steel sheet piles exposed to the marine environment [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Vertical and Lateral Bearing Capacity of FRP Composite Sheet Piles in Soft Soil

Wang

Shu-wei

Weng

et al. 2020

Advances in Civil Engineering

View full text Add to dashboard Cite

Fiber-reinforced polymer (FRP) composite sheet piles are usually favored for slope and river-retaining structures due to their construction and environmental efficiency. Their applications, however, have been hindered by the lack of understanding of the bearing capacity. This paper studies the vertical and lateral bearing capacity of FRP composite sheet piles through three full-scale tests conducted in Haiyan, a soft soil site in the Yangtze River Delta of China. In the three tests, we measured the vertical bearing capacity of the FRP composite sheet piles, the bearing capacity of the composite foundation, and the lateral capacity of the FRP composite sheet piles, respectively. The test results show that the Q-S (load on the top of the pile versus settlement) curve of the FRP composite sheet piles exhibits a steep fall while that of the composite foundation is relatively flat. Moreover, the ultimate bearing capacity of the FRP composite sheet piles is measured to reach 23.8 kN while that of the composite foundation increases by 47.1 %, reaching 35.0 kN. It shows that the FRP composite sheet piles under the composite foundation have a favorable bearing performance. Finally, the final horizontal displacement of the FRP composite sheet pile in the reinforced area with anchoring the sheet pile is smaller than the final horizontal displacement in the nonreinforced area, indicating that the horizontal bearing capacity can be significantly improved by anchoring the sheet pile.

show abstract

“…PHC pipe piles are widely used in foundation works in civil, municipal, and other projects in China due to the advantages of a high bearing capacity, high construction efficiency, and reliable quality [5][6][7][8]. e hydraulic jacking method is a common technique for pile penetration that has several advantages such as being vibration-free and noise-free during construction [9][10][11][12]. is method is generally used to press a PHC pipe pile into the site soil.…”

Section: Introductionmentioning

confidence: 99%

Experimental Research Based on the Optical Fiber Sensing Technology for a Jacked PHC Pipe Pile Penetration Process

Sang

Wang

et al. 2020

Advances in Civil Engineering

View full text Add to dashboard Cite

The aim of this work is to explore the influence of the end resistance and shaft resistance regarding the mechanism for jacked pile penetration and the load-transfer rule during the penetration process. A full-scale field test was conducted in an actual project located in Dongying, Shandong Province, China. In this test, the axial strain experienced by two closed Prestressed High-strength Concrete (PHC) pipe piles during jacking into layered soil was monitored successfully using Fiber Bragg Grating (FBG) sensors mounted on the pile shaft. The experimental results show that FBG sensors have a good stability, strong antijamming performance, and can effectively monitor the pile stress. The variation law of the jacking force reflects the distribution of the soil layer, and the hardness of the soil layer at the pile end limits the pile force. When the pile end enters the silt layer from the clay layer, the jacking force and shaft resistance increase by 2.5 and 1.7, respectively. The shaft resistance accounted for 44.99% of the jacking force. The end resistance is affected by the mechanical properties of soil, and the end resistance of the silt layer is approximately twice that of the clay layer. The end resistance of the silt layer accounted for 59.84% of the jacking force. When the pile end enters the soft soil layer from the hard soil layer, the impact of the pile driving speed and the tangential force on the surface of the pile body must both be considered. During the pile penetration process, as the penetration depth increases, the radial stress on the pile side at a given depth is gradually released, while the shaft resistance at the pile side degrades significantly.

show abstract

Field Test Investigation of the Pile Jacking Performance for Prefabricated Square Rigid‐Drainage Piles in Saturated Silt Sandy Soils

Cited by 6 publications

References 22 publications

Study on Seismic Response in Deeply Deposited Saturated Liquefiable Soil Reinforced by Using Subarea Long-Short Gravel Piles

Study on Seismic Response in Deeply Deposited Saturated Liquefiable Soil Reinforced by Using Subarea Long-Short Gravel Piles

Vertical and Lateral Bearing Capacity of FRP Composite Sheet Piles in Soft Soil

Experimental Research Based on the Optical Fiber Sensing Technology for a Jacked PHC Pipe Pile Penetration Process

Contact Info

Product

Resources

About