The Selection of the Collapsible Loess Foundation Treatment Methods

2012 ◽  
Vol 170-173 ◽  
pp. 331-334
Author(s):  
Yun Bo Xu ◽  
Yan Fei Sun
Keyword(s):  
Soft Soil ◽  
Composite Foundation ◽  
Treatment Methods ◽  
Advantages And Disadvantages ◽  
Ground Treatment ◽  
Foundation Treatment ◽  
Collapsible Loess ◽  
Key Issues ◽  
Foundation Pile ◽  
Selection Of

The collapsible loess ground treatment methods include dynamic compaction, soil replacement cushion method, lime-soil compaction pile composite foundation, pile foundation, etc. Each method has its advantages and disadvantages. The bearing capacity of collapsible loess is not lower, it is non-soft soil. The purpose of the collapsible loess ground treatment is to eliminate the collapsible at the most, few to increase the capacity and improve the heterogeneity of the foundation. In this paper, the collapsible loess foundation treatment methods are been compacted from the technical and economic factors. And the key issues of the collapsible loess ground treatment methods are discussed.

The Experimental Research on the Bag-Grouting-Pile Composite Foundation in Coastal Soft Foundation Treatment

2013 ◽  
Vol 275-277 ◽  
pp. 1411-1414
Author(s):  
Dong Wang ◽  
Jia Cao
Keyword(s):  
Experimental Research ◽  
Soft Soil ◽  
Cost Effective ◽  
Horizontal Displacement ◽  
Composite Foundation ◽  
Soil Reinforcement ◽  
Treatment Technology ◽  
Ground Treatment ◽  
Foundation Treatment ◽  
Soft Foundation

As a new ground treatment technology, the bag-grouting-pile composite foundation is used in railway soft soil reinforcement. In this paper, the application effect of bag-grouting-pile in coastal soft foundation treatment was studied in this experimental research; the deep settlement and the deep horizontal displacement of embankment edge in bag-grouting-pile composite foundation are tested in the research. The results of research show that the bag-grouting-pile composite foundation is a cost-effective ground treatment technology using in coastal soft foundation treatment.

Study on Optimal Selection for Soft Soil Foundation Treatment Methods of Port Engineering

2013 ◽  
Vol 368-370 ◽  
pp. 2007-2013
Author(s):  
Peng Tang ◽  
Ding Yong Yu
Keyword(s):  
Soft Soil ◽  
Evaluation Methods ◽  
Optimal Selection ◽  
Treatment Methods ◽  
Foundation Treatment ◽  
Selection For ◽  
Soil Foundation ◽  
Soft Soil Foundation ◽  
Port Engineering ◽  
Selection Of

In this paper, advantages and disadvantages of single evaluation methods in solution selection of soft soil foundation treatment are analyzed and evaluated. Grey multilevel evaluation model combined AHP method and GRAP method is used in method selection of soft soil foundation treatment. Three kinds of soft soil foundation treatment schemes to be adopted in breakwater engineering construction in the west area of Yantai port are analyzed. And optimal selection of soft foundation treatment schemes is realized. It indicates that grey multilevel evaluation methods is reliable in results and possesses certain practical applicability and effectiveness, which provides a new way for optimal selection for soft soil foundation treatment methods of port engineering.

Reinforcement Technology of Cement Agitation Pile in the Highway Soft Foundation Treatment

2013 ◽  
Vol 329 ◽  
pp. 205-209
Author(s):  
Kai Chen
Keyword(s):  
Soft Soil ◽  
Construction Technology ◽  
Pressing Method ◽  
Treatment Methods ◽  
Deep Mixing ◽  
Replacement Method ◽  
Foundation Treatment ◽  
Soft Foundation ◽  
Mixing Method ◽  
Soil Distribution

There is the soft soil distribution mostly in the regions along the river or the sea in our country, so the soft foundation treatment shold be well done in building highways. With respect to the soft foundation treatment methods, the scholars, engineers and technicians home and abroad have put forward a dozen or more methods, such as replacement method, reinforcement method, top pressing method, sandstone pile method and deep mixing method etc.. This article discusses the reinforcement mechanism, construction technology and some proceedings requiring attention in the construction and detection of the cement agitation pile.

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.

Application of Lime-Soil Compaction Pile Method for Loess Foundation Treatment

2014 ◽  
Vol 638-640 ◽  
pp. 393-396 ◽  
Author(s):  
Fei Huang ◽  
Da Jun Zhao
Keyword(s):  
Soil Compaction ◽  
Construction Projects ◽  
Engineering Practice ◽  
Treatment Methods ◽  
Foundation Treatment ◽  
Collapsible Loess ◽  
Characteristics Analysis

Construction projects are increasingly encountered bad foundation, because of collapsible loess is widely distributed in our country, so most widely especially bad in collapsible loess foundation, this paper based on the characteristics analysis of the loess collapsibility of loess, expounded in combination with the engineering practice of collapsible loess foundation treatment methods, problems and countermeasures.

Numerical Simulation Research on the Settlement Regularity in Pile-Net Composite Foundation

2011 ◽  
Vol 261-263 ◽  
pp. 1251-1256
Author(s):  
Jin Jiang YU ◽  
Qian Gong Cheng ◽  
Cheng Hui Li ◽  
Hua Wen
Keyword(s):  
Numerical Simulation ◽  
Soft Soil ◽  
Composite Foundation ◽  
Simulation Research ◽  
Pile Spacing ◽  
Engineering Characteristics ◽  
Foundation Treatment ◽  
Pile Cap ◽  
Deep Soft Soil

Based on the foundation treatment for deep soft soil in Chaoshan station district, this paper studied the engineering characteristics of soft soil in Chaoshan and the settlement regularity of pile-net composite foundation, etc. by numerical simulation. The results show: the reduction of pile spacing and the settings of pile cap can decrease the settlement of soil among the piles on foundation plane.

Reinforcement Effect of Vibration Replacement Stone Column Test in Test Pile Area for One Crude Oil Business Reserve Base

2014 ◽  
Vol 584-586 ◽  
pp. 1922-1932
Author(s):  
Shun Xiang Meng ◽  
Shi Ming Xiao ◽  
Wei Liang ◽  
Qian Kun Gao
Keyword(s):  
Crude Oil ◽  
Bearing Capacity ◽  
Composite Foundation ◽  
Engineering Properties ◽  
Stone Column ◽  
Foundation Soil ◽  
Oil Storage ◽  
Foundation Treatment ◽  
Deformation Properties ◽  
Foundation Pile

The crude oil storage tank foundation is always treated by using vibration replacement stone column composite foundation treatment, mainly to improve the engineering properties of foundation soil and the deformation properties of soil, improving the bearing capacity of composite foundation, and to ensure the normal use of tank in the superstructure loads from damage or excessive deformation. Before construction to carry out the vibration replacement stone column composite foundation pile test, the test shows that strengthening the foundation bearing capacity characteristic value of vibration replacement stone column can meet the design requirements.

An Introduction to the Selection of Outcome Measures

2005 ◽  
Vol 68 (5) ◽  
pp. 202-206 ◽  
Author(s):  
Susan Corr ◽  
Leonie Siddons
Keyword(s):  
Occupational Therapy ◽  
Outcome Measures ◽  
Occupational Therapists ◽  
Advantages And Disadvantages ◽  
Key Issues ◽  
Selection Of

This paper introduces the key issues that occupational therapists need to cover when selecting outcome measures for their workplace. It indicates the properties required for a standardised tool and describes how data are usually collected and analysed. Consideration is given to the advantages and disadvantages of using a standardised tool to measure the outcome of occupational therapy.

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