Characteristics of Cast-InSitu Concrete Pipe Pile under Lateral Load

2012 ◽  
Vol 204-208 ◽  
pp. 743-746
Author(s):  
Zhi Tao Ma ◽  
Yong Ping Wang
Keyword(s):  
Lateral Load ◽  
Pile Driving ◽  
Soft Ground ◽  
General Introduction ◽  
In Situ Test ◽  
Pipe Pile ◽  
Concrete Pipe

The cast-in-situ concrete pipe pile is a new kind of pile used widely in China to improve the soft ground. In this paper, the general introduction of this pile was given, mainly including the pile driving machine, the technique of pile working and the structure of pile. At last, one in situ test of this pile under lateral load were given, the characteristics of displacement of pile body and displacement of pile top were analyzed. These results can give a reference for practice project.

Field Test Research on Soil Compacting Effect of Cast-In Situ Concrete Pipe Pile

2012 ◽  
Vol 446-449 ◽  
pp. 1914-1917
Author(s):  
Zhi Tao Ma ◽  
Han Long Liu ◽  
Yong Ping Wang ◽  
Ji Ming Zhu
Keyword(s):  
Field Test ◽  
Pipe Pile ◽  
Concrete Pipe

Field Test Research on Soil Compacting Effect of Cast-In Situ Concrete Pipe Pile

2012 ◽  
Vol 446-449 ◽  
pp. 1914-1917
Author(s):  
Zhi Tao Ma ◽  
Han Long Liu ◽  
Yong Ping Wang ◽  
Ji Ming Zhu
Keyword(s):  
Pore Water Pressure ◽  
Water Pressure ◽  
Engineering Application ◽  
Deep Soil ◽  
Pipe Pile ◽  
Pile Diameter ◽  
Concrete Pipe ◽  
Practical Engineering

Combined with practical engineering application, the test researches were carried out to analyze the soil compacting effects of Cast-in-situ concrete pipe pile while the pile was driven by vibration hammer. This article is focused on the characteristics of soil uplift and lateral deformation around pile, included surface soil and deep soil. In addition, the change characteristic of pore water pressure of soil around pile is also analyzed, and some useful rules were concluded. All researches are helpful to optimize the construction parameters, such as distance between piles, pile diameter etc., to improve the quality of pile foundation, also to reduce the construction impact on environment.

Elasto-Plasticity Solution on Bearing Characteristic of Cast-in-Place Concrete Pipe Pile with Large Diameter in Layered Soil under Lateral Load

2010 ◽  
Vol 168-170 ◽  
pp. 2321-2328
Author(s):  
Jian Wei Zhang ◽  
Han Long Liu ◽  
Gui Yang
Keyword(s):  
Large Diameter ◽  
Internal Force ◽  
Lateral Load ◽  
Layered Soil ◽  
Pipe Pile ◽  
Concrete Pipe ◽  
Elasto Plasticity ◽  
Force Profile ◽  
Pcc Pile ◽  
Bearing Characteristic

Aimed at problems lying in the exiting methods for calculation of laterally loaded piles installed in layered soils, the elasto-plasticity solution of cast-in-place concrete pipe pile with large diameter (PCC pile) in layered soil under lateral load based two-parameter foundation model and unity limiting force profile, deduced the finite difference solution based unity limiting force profile(LFP), established the calculation program of the displacement and internal force of pile. It was shown that the calculated pile moment and pile displacement coincided very well by computation and comparison of model test and FEM, verified the method’s correction. Meanwhile, the method was more precise and efficient than the existing conversion methods of subgrade modulus. Therefore, it could be useful for the design and analysis of PCC pile under lateral load.

Prediction of Lateral Load Response for a Pile Group

1997 ◽  
Vol 1569 (1) ◽  
pp. 36-46 ◽  
Author(s):  
Pedro F. Ruesta ◽  
F. C. Townsend
Keyword(s):  
Test Group ◽  
Pile Group ◽  
Lateral Load ◽  
Load Test ◽  
Pressuremeter Test ◽  
In Situ Test ◽  
Concrete Piles ◽  
Load Response ◽  
Pile Load Test

A full-scale lateral load test of a pile group consisting of 16 (4 by 4) prestressed 76-cm-square concrete piles was conducted at Roosevelt Bridge, Stuart, Florida, during the summer of 1996. Presented are ( a) in situ test results, ( b) various p-y curves from these tests, and ( c) comparisons of various computer predictions (FLPIER, GROUP, and PIGR3D) using p-y curves tempered with results from a single-pile load test. From these comparisons, the best Class A prediction is made for the 16-pile group using FLPIER with nonlinear pile properties; p-y multipliers of 0.8, 0.4, 0.3, and 0.3 for the leading, middle, and trailing two rows, respectively; and dilatometer test—pressuremeter test p-y curves. This prediction suggests that an average load per pile of 280 kN will produce a deflection of 0.1 m (63 kips/pile at a deflection of 3.9 in.) for the test group.

Test Research on Cast-In-Situ Concrete Pipe Piles under Lateral Load

2012 ◽  
Vol 166-169 ◽  
pp. 653-656
Author(s):  
Zhi Tao Ma ◽  
Yong Ping Wang ◽  
Sai Jiang Liang
Keyword(s):  
Bending Moment ◽  
Horizontal Displacement ◽  
Lateral Load ◽  
Deformation Characteristics ◽  
Pile Diameter ◽  
Concrete Pipe ◽  
Relationship Of ◽  
The Relationship ◽  
Pile Length

Using the model test systems self-designed, the deformation characteristics such as displacement and bending moment of cast-in-situ concrete pipe piles under lateral load were studied, the nonlinear characteristics of pile top horizontal displacement and the maximum bending moment variation with load were also analyzed by fitting the measured data. Further, the main factors such as pile length, pile diameter that affect the deformation characteristics significantly were also analyzed. The results show that the relationship between horizontal displacement of pile top and load is nonlinear hyperbolic, but the relationship of maximum bending moment and load is power function. All results can provide a reference for related pile projects.

scholarly journals Design and Application of an In Situ Test Device for Rheological Characteristic Measurements of Liquefied Submarine Sediments

2021 ◽  
Vol 9 (6) ◽  
pp. 639
Author(s):  
Hong Zhang ◽  
Xiaolei Liu ◽  
Anduo Chen ◽  
Weijia Li ◽  
Yang Lu ◽  
...  
Keyword(s):  
Yellow River ◽  
Rheological Characteristic ◽  
Yellow River Delta ◽  
Turbidity Currents ◽  
Rheological Characteristics ◽  
Submarine Landslides ◽  
Test Device ◽  
Offshore Area ◽  
In Situ Test

Liquefied submarine sediments can easily lead to submarine landslides and turbidity currents, and cause serious damage to offshore engineering facilities. Understanding the rheological characteristics of liquefied sediments is critical for improving our knowledge of the prevention of submarine geo-hazards and the evolution of submarine topography. In this study, an in situ test device was developed to measure the rheological properties of liquefied sediments. The test principle is the shear column theory. The device was tested in the subaqueous Yellow River delta, and the test results indicated that liquefied sediments can be regarded as “non-Newtonian fluids with shear thinning characteristics”. Furthermore, a laboratory rheological test was conducted as a contrast experiment to qualitatively verify the accuracy of the in situ test data. Through the comparison of experiments, it was proved that the use of the in situ device in this paper is suitable and reliable for the measurement of the rheological characteristics of liquefied submarine sediments. Considering the fact that liquefaction may occur in deeper water (>5 m), a work pattern for the device in the offshore area is given. This novel device provides a new way to test the undrained shear strength of liquefied sediments in submarine engineering.

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