scholarly journals Study on Foundation Treatment Technology of Comprehensive Pipe Gallery in Collapsible Loess Area

2020 ◽  
Vol 560 ◽  
pp. 012046
Author(s):  
Liangcheng Li ◽  
Qi Liu ◽  
Jianxun Ma ◽  
Rubin Jia ◽  
Wenyan Zhou ◽  
...  
Keyword(s):  
Treatment Technology ◽  
Loess Area ◽  
Foundation Treatment ◽  
Collapsible Loess

Application Research of Compaction Pile in Heavy Collapsible Loess

2011 ◽  
Vol 90-93 ◽  
pp. 1390-1393 ◽  
Author(s):  
Yong Qiang He ◽  
Yan Peng Zhu ◽  
Yun Wu ◽  
Xiao Qing Wang
Keyword(s):  
Soil Compaction ◽  
Composite Foundation ◽  
Application Research ◽  
Loess Area ◽  
Foundation Treatment ◽  
Collapsible Loess ◽  
Expansion Theory ◽  
Soil Compressibility ◽  
Cavity Expansion Theory ◽  
Physical Mechanics

Compaction piles is one of the conventional methods for foundation treatment in collapsible loess, there are very few research results about soil compaction effect between piles when forming the piles. Firstly, the stress field and displacement field of soil around compaction piles are elastic-plastic analyzed on the basis of the cavity expansion theory; then a series of field and laboratory tests were performed to evaluate the treatment effect of the compaction pile composite foundation. The result shows that the collapsibility has been eliminated, all physical mechanics indexes have been improved, and soil compressibility and modulus of compressibility are also increased remarkably. It embodies the correctness of the computation theory. And the feasibility of the compaction piles composite foundation on collapsible loess area is further proved.

Research on FLAC 3D Numerical Simulation of Working Mechanism of Compaction Pile Composite Foundation

2012 ◽  
Vol 204-208 ◽  
pp. 220-223
Author(s):  
Yong Qiang He ◽  
Hui Qing Zhang ◽  
Bin Can Liu ◽  
Yun Wu
Keyword(s):  
Soil Compaction ◽  
Composite Foundation ◽  
Working Mechanism ◽  
3D Numerical Simulation ◽  
Loess Area ◽  
Foundation Treatment ◽  
Collapsible Loess ◽  
Expansion Theory ◽  
Flac 3D ◽  
Cavity Expansion Theory

Compaction piles is one of the conventional methods for foundation treatment in collapsible loess, there are very few research results about soil compaction effect between piles when forming the piles. Firstly, the stress field and displacement field of soil around compaction piles are elastic-plastic analyzed on the basis of the cavity expansion theory; then a series of FLAC 3D numerical simulations were performed to evaluate the treatment effect of the compaction pile composite foundation. The result shows that all bearing capacity has improved, and quicklime compaction pile composite foundation has been increased remarkably. It embodies the correctness of the computation theory. And the feasibility of the compaction piles composite foundation on collapsible loess area is further proved.

Study on the Treatment and Settlement Monitoring Technology of Passenger Dedicated Line Collapsible Loess Foundation

2014 ◽  
Vol 584-586 ◽  
pp. 1951-1955
Author(s):  
Fu Chun Liu ◽  
Hui Feng Su ◽  
Qiu Chun Wang
Keyword(s):  
Loess Area ◽  
Transition Section ◽  
Railway Line ◽  
Foundation Treatment ◽  
Collapsible Loess ◽  
Hyperbolic Curve ◽  
Long Time ◽  
Line Passing ◽  
Settlement Monitoring

By the engineering background of Datong-Xian Passenger Dedicated Railway Line passing through the collapsible loess area, four representative test sections such as roadbed-bridge transition section, roadbed-culvert transition section, ordinary and special embankment section was selected. Different pile parameter and pile plane layout and subgrade filling measure has been taken according to the different test sections. At the same time, the correspondence of settlement monitoring project was carried out. After the long time monitoring, by the hyperbolic curve and logarithmic method predicting, the long-term settlement has been predicted. The monitoring results and the curve fitting shows that the settlement and the foundation treatment schemes with subgrade filling measurement meet the design requirement also provided reference and reference for other engineering.

The Technology Innovation of Green Soft Ground Handling Based on Squeezing and Consolidation Composited

2014 ◽  
Vol 580-583 ◽  
pp. 2244-2248
Author(s):  
Jun Yi Shao ◽  
Xiao Zhang
Keyword(s):  
Life Cycle ◽  
Carrying Capacity ◽  
Soil Compaction ◽  
Environmental Load ◽  
Treatment Technology ◽  
Foundation Treatment ◽  
Soft Foundation ◽  
Ground Handling ◽  
Pump Pressure ◽  
The Cost

In this paper, we sorted soft foundation treatment technology by quantifying based on evaluation technique of life cycle environmental load and choose cement mixing pile which life-cycle environmental load is small and spiral pump pressure CFG pile which carrying capacity is high to integrate. It not only improved soil compaction effects, but also solved the problems of other technologies in the foundation process, such as low carrying capacity, reduced diameter, broken pile, virtual pile and so on. Besides, it has reduced the cost of the project and the application prospects are broad.

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