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.

Design Research and Technical Application of the Multi-Type-Pile Composite Foundation

2012 ◽  
Vol 170-173 ◽  
pp. 110-114
Author(s):  
Yan Gao ◽  
Hui Min Li ◽  
Ji Ling Yao
Keyword(s):  
Bearing Capacity ◽  
Design Research ◽  
Composite Foundation ◽  
Social Benefits ◽  
Drilling Machine ◽  
Construction Technology ◽  
Practical Application ◽  
Technical Application ◽  
Foundation Soil ◽  
High Rise

Through project example, analysis of the multi-type-pile composite foundation (lime pile plus CFG pile) in the practical application of liquefied foundation of high-rise building, especially using the ZFZ construction technology which forwards formed a hole and reverses packed into a compaction pile by a long spiral drilling machine to eliminate liquefaction of foundation soil and improve the bearing capacity of foundation is very notable, in addition, it also produces good economic and social benefits, so it has great value of promotion and use.

A Field Experimental Study of Composite Foundation with Rammed Soil-Cement Pile in Collapsible Loess Area

2014 ◽  
Vol 1030-1032 ◽  
pp. 969-973 ◽  
Author(s):  
Hai Jian Sun ◽  
Shi You Zhang
Keyword(s):  
Composite Foundation ◽  
Engineering Properties ◽  
Test Results ◽  
Loading Test ◽  
Foundation Soil ◽  
Loess Area ◽  
Soil Cement ◽  
Static Loading Test ◽  
Natural Foundation ◽  
Field Static

Natural foundation in loess areas is collapsible; however, composite foundation with rammed soil-cement pile can be used to meet the load requirements of the building. Immersion-compression test and field static loading test were carried out to measure the treatment effect. The test results showed that: the collapsible of loess foundation can be eliminated by treatment with rammed soil-cement pile when the loading pressure is between 200 to 500 kPa. Engineering properties of the foundation soil between piles are improved. The parameters improve more obvious with the pile spacing getting smaller. The bearing capacity of composite foundation increased to 291 kPa, compared with natural loess foundation. The research results can be applied to design and construction of compacted soil cement pile composite foundation in loess area.

The Study on the Engineering Properties of Squeezed Branch Piles under Combined Load

2014 ◽  
Vol 580-583 ◽  
pp. 371-375 ◽  
Author(s):  
Wei Feng Han ◽  
Bin Bin Feng ◽  
Jing Zhou ◽  
Chen Yuan Lu
Keyword(s):  
Bearing Capacity ◽  
Engineering Properties ◽  
Equivalent Diameter ◽  
Horizontal Load ◽  
Combined Load ◽  
Single Plate ◽  
Deformation Properties

In this article, we design an experiment about model piles to study their bearing capacity and deformation properties under uplifting load of different angles, model piles include the equivalent-diameter pile, the squeezed branch pile with single plate and the squeezed branch pile with two plates. The test shows, the bearing capacity of squeezed branch pile is higher than the equivalent-diameter pile, and its plates can resist the horizontal load on the top of pile better.

Analysis of Subsidence and Bearing Capacity of Consolidated Ground

2010 ◽  
Vol 163-167 ◽  
pp. 3457-3460
Author(s):  
Zhong Chang Wang
Keyword(s):  
Bearing Capacity ◽  
Soft Soil ◽  
Deformation Modulus ◽  
Load Condition ◽  
Composite Foundation ◽  
Gantry Crane ◽  
Foundation Treatment ◽  
Relationship Of ◽  
The Relationship ◽  
Two Sides

There is high requirement to the foundation of the raceway of container gantry crane. However, the marine soft soil is distributed extensively at Dalian ports. In the paper, the settlement and bearing capacity of natural and composite foundation of raceway of container gantry crane under design load is analyzed by finite element method on the basis of geological data, foundation treatment. The relationship of different deformation modulus and foundation bearing capacity is obtained by considering the strength of foundation and the requirement of settlement. The settlement and the inclination value of two sides of container gantry crane which is less than the permitting value of laws under consolidated ground and corresponding load condition is obtained. The corresponding deformation modulus of consolidated ground is obtained under different load condition. The boundary of basis is easy to failure, the treatment range extension of foundation should be considered.

The Analysis on Bearing Characteristic of Residue Pile Composite Foundation Formed by DDC

2014 ◽  
Vol 580-583 ◽  
pp. 302-307
Author(s):  
Zeng Rong Liu ◽  
Qing Juan Sun ◽  
Zhi Fang Yan
Keyword(s):  
Finite Element ◽  
Bearing Capacity ◽  
Composite Foundation ◽  
Dynamic Compaction ◽  
Finite Element Software ◽  
Foundation Treatment ◽  
Bearing Characteristic

The bearing capacity of residue pile composite foundation formed by deep dynamic compaction, shorted for DDC, is calculated and analyzed by ANSYS finite element software. The analysis results show that pile body and soil between piles have a good coordination, residue pile composite foundation is semi-flexible and semi-rigid and the effect of consolidating foundation is obvious. The purpose of foundation treatment should be taken into consideration primarily to provide reference for future similar projects.

Study on Calculation Method of Reinforced Embankment Bearing Capacity Based on Landslide Equilibrium Method

2013 ◽  
Vol 671-674 ◽  
pp. 1240-1244
Author(s):  
Wen Xian Liu
Keyword(s):  
Bearing Capacity ◽  
Calculation Method ◽  
Composite Foundation ◽  
Soft Ground ◽  
Friction Resistance ◽  
Foundation Treatment ◽  
Slide Block ◽  
Equilibrium Method ◽  
Practical Engineering ◽  
Balance Analysis

Foundation treatment is necessary when the construction is built on soft ground; Reinforcing is superior to many other methods when embankment is built on soft ground. This paper adopts slide block balance analysis of the composite foundation bearing capacity consisting of the horizontal reinforced and discrete material pile, while considering the level friction resistance from the reinforcement and ground on the foundation bearing capacity influence. and it is applied to practical engineering. The results show that the method is feasible.

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.

Two-Stage Optimal Design of Small Pile Composite Foundation Based on Consolidation Degree and Bearing Capacity Control

2012 ◽  
Vol 455-456 ◽  
pp. 199-203
Author(s):  
Huai Feng Tong
Keyword(s):  
Optimal Design ◽  
Bearing Capacity ◽  
Design Theory ◽  
Soft Soil ◽  
Composite Foundation ◽  
Processing Technology ◽  
Post Processing ◽  
Consolidation Process ◽  
Foundation Soil ◽  
Consolidation Degree

The optimal design theory of the post-processing technology of thick filling area is based on the characteristics of small non-sand concrete pile, to research the production and development process of stress and strain of foundation soil in the course of drilling and grouting, and thus to optimize the key technical parameters of the post-processing technology. In this paper, on the basis of the analysis of consolidation process and treatment mechanism of the post-processing under the conditions of saturated soft soil, the research of optimal design of the post-processing technology on the control of consolidation degree and bearing capacity is completed, which is of reference for the design and construction of the post-processing technology.

scholarly journals Statistical Analysis on the Static Characteristics of the Geosynthetic Encased Stone Column

2021 ◽  
Author(s):  
Fang Ou Yang ◽  
Yingang Wang ◽  
Zuoju Wu ◽  
Zhijia Wang
Keyword(s):  
Statistical Analysis ◽  
Stress Concentration ◽  
Bearing Capacity ◽  
Concentration Ratio ◽  
Stone Column ◽  
Static Characteristics ◽  
New Developments ◽  
Foundation Treatment ◽  
Stress Concentration Ratio ◽  
Made In

Abstract The geosynthetic encased stone column is made of stone column encased with geosynthetic encasement. The geosynthetic encased stone column is often used for foundation treatment of roadbeds, dams, buildings and other structures. At present, a series of new developments have been made in the researches of bearing capacity, stress concentration ratio and deformation of the geosynthetic encased stone column. This paper statistically analyzes the three important static characteristics of the geosynthetic encased stone column.

National Strategic Crude Oil Storage in the Weeks Island Dome Salt Mine—Part II: Rock Mechanics Evaluation

1979 ◽  
Vol 101 (2) ◽  
pp. 87-92
Author(s):  
L. L. Van Sambeek ◽  
F. D. Hansen ◽  
P. F. Gnirk ◽  
M. Ashraf Mahtab
Keyword(s):  
Crude Oil ◽  
Rock Mechanics ◽  
Salt Mine ◽  
Noticeable Effect ◽  
Long Term Storage ◽  
Oil Storage ◽  
Deformation Properties ◽  
Strategic Petroleum Reserve ◽  
Strength And Deformation ◽  
Mine Workings

This paper, the second in a series of two, presents the results of a rock mechanics evaluation of the Weeks Island dome salt mine. The purpose of the evaluation was to assess the structural stability of the old mine workings in conjunction with a proposed new deeper mine level during the use of the facility for the long-term storage of crude oil under the Federal Energy Administration’s Strategic Petroleum Reserve Program. The scope of the work involved laboratory testing of the strength and deformational characteristics of the rock salt; determination of a minimum web (or sill) thickness between the old workings (within which crude oil would be stored) and a proposed new mine level development below; and assessment of the effects of crude oil emplacement and withdrawal on the mine stability, as related to both the old workings and the proposed new mine level development. The finite element results, wherein use was made of the strength and deformation properties of the salt from the laboratory tests, indicated that a minimum sill thickness of 90 m (300 ft) should be maintained between the old mine workings and the new level development. Furthermore, the emplacement and withdrawl of crude oil from the old workings will have little influence on pillar and sill stabilities for the entire mine, including the proposed lower level development. The only noticeable effect could, perhaps, be obtained in the creep rate due to changing stress conditions.

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