Construction of a Large Diameter Cast-in-Situ Concrete Pipe Pile for Ground Improvement

2009 ◽  
Author(s):  
Hanlong Liu ◽  
Yumin Chen ◽  
Jinyuan Liu
Keyword(s):  
Ground Improvement ◽  
Large Diameter ◽  
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):  
Field Test ◽  
Pipe Pile ◽  
Concrete Pipe

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):  
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.

scholarly journals Use of large-diameter, cast–in situ concrete pipe piles for embankment over soft clay

2009 ◽  
Vol 46 (8) ◽  
pp. 915-927 ◽  
Author(s):  
Han-Long Liu ◽  
Jian Chu ◽  
An Deng
Keyword(s):  
Large Diameter ◽  
Soft Clay ◽  
Cost Effective ◽  
Soil Improvement ◽  
Scale Model ◽  
Concrete Pipe ◽  
Construction Techniques ◽  
And Performance ◽  
Piled Embankment

A new method of using large-diameter, cast–in situ concrete pipe (PCC) piles for embankments over soft clay is introduced in this paper. This PCC pile method offers a relatively quick and cost-effective way for soil improvement as compared with other existing soil improvement methods. The principles and construction techniques involved in this method are described. Full-scale model tests were conducted to evaluate the quality and performance of piles and the responses of the surrounding soils. Methods that can be used to check the quality of the pipe piles are elaborated. A case study that illustrates the application of this method in a piled embankment over soft clay is presented.

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