Analysis of Bearing Capacity for Quicklime Compaction Pile Composite Foundation

2013 ◽  
Vol 671-674 ◽  
pp. 10-13 ◽  
Author(s):  
Yong Qiang He ◽  
Bin Can Liu ◽  
Bao Ping Jiao ◽  
Ji Zhong Gan
Keyword(s):  
Bearing Capacity ◽  
Influencing Factors ◽  
Calculation Method ◽  
Soil Compaction ◽  
Composite Foundation ◽  
Reliability Design ◽  
Collapsible Loess ◽  
Practical Engineering

In the collapsible loess of Midwest China, quicklime compaction pile composite foundation has been widely used in practical engineering. Firstly，the calculation method of quicklime compaction pile composite foundation is analyzed; then the influencing factors of bearing capacity for quicklime compaction pile composite foundation was researched on the basis of the character about soil compaction effect between piles with the quicklime expanding when absorbing water from the soil; lastly, the calculation method was used in practical engineering, the results can be used to reference in reliability design application of composite foundation.

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.

scholarly journals Study on Flexural Bearing Capacity Calculation Method of Enclosure Pile with Partial Excision in Deep Foundation Pit

2019 ◽  
Vol 2019 ◽  
pp. 1-10 ◽  
Author(s):  
Mingfeng Lei ◽  
Linghui Liu ◽  
Yuexiang Lin ◽  
Jin Li
Keyword(s):  
Flexural Strength ◽  
Bearing Capacity ◽  
Calculation Method ◽  
Deep Foundation ◽  
Foundation Pit ◽  
Theoretical Derivation ◽  
Deep Foundation Pit ◽  
Practical Engineering ◽  
Capacity Calculation ◽  
Partial Excision

During deep foundation pit construction, the structural clearance intrusion, which is caused by the complex formation conditions and the inefficient drilling equipment, is usually detected due to the vertical deviation of piles. To meet construction requirements, pile parts intruding into the structural clearance are supposed to be excised. However, the sectional flexural strength of the pile is bound to decrease with partial excision, which would reduce the bearing capacity of the enclosing structure during construction. In this paper, a theoretical derivation of the normal sectional flexural strength of the partially excised circular pile is proposed. The derivation adopts the assumption of the plane section and steel ring equivalence and can be solved by the bisection method. Furthermore, the calculation method is applied to the pile evaluation of a practical engineering; also, the method is verified by the numerical method. The application results show that the excision of rebar and pile’s sectional area will cause a rapid linear decline in the sectional flexural strength. After excising 18 cm radial thickness of the circular pile (ϕ800 mm) and 6 longitudinal rebars, the sectional flexural strength of the pile decreases to 58% from the origin, which cannot meet the support requirement. The analysis indicates that pile reinforcements must be carried out to maintain the construction safety.

Analysis on Bearing Capacity of CFG Pile Composite Foundation in Baotou

2013 ◽  
Vol 353-356 ◽  
pp. 337-340
Author(s):  
Ying Hao Wang ◽  
Yu Qin Feng ◽  
Shuo Li
Keyword(s):  
Bearing Capacity ◽  
Sandy Soil ◽  
Inner Mongolia ◽  
Composite Foundation ◽  
Engineering Project ◽  
Silty Soil ◽  
Practical Engineering ◽  
Soil Foundation ◽  
Cfg Pile Composite Foundation ◽  
Cfg Pile

By uniting composite foundation with CFG pile composite foundation for a practical engineering project in Baotou, the bearing capacity of CFG pile in sandy soil and silty soil foundation were analyzed. The conclusion can be applied to the similar projects in the region of Inner Mongolia.

Application of Long-Short-Pile Composite Foundation of High-Rise Building in Soft Soil

2012 ◽  
Vol 256-259 ◽  
pp. 57-60
Author(s):  
Rong Fang Song ◽  
Ling Yun Lang ◽  
Jing Wang
Keyword(s):  
Bearing Capacity ◽  
Calculation Method ◽  
Design Method ◽  
Soft Soil ◽  
Composite Foundation ◽  
Soft Ground ◽  
Design Calculation ◽  
Actual Measurement ◽  
High Rise ◽  
High Rise Building

A case of the long-short-pile composite foundation in liquefied soft soil under a 30-storey high-rise building is presented, in which the long and short piles are made of cement-flyash-gravel (CFG) and lime. A new design calculation method of bearing capacity and settlement of composite foundation is introduced, and the calculated value is compared with the actual measurement. The results show that the liquefaction of soft ground is eliminated and the demand of load and settlement for upper building is met. At the same time, it is proved that the design method is feasible.

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.

Design and Application of Long-Short-Pile Composite Foundation

2013 ◽  
Vol 790 ◽  
pp. 329-332 ◽  
Author(s):  
Ze Fan ◽  
Yu Cheng Zhang ◽  
Hui Kang Liu
Keyword(s):  
Bearing Capacity ◽  
Calculation Method ◽  
Engineering Application ◽  
Differential Settlement ◽  
Theory And Practice ◽  
Composite Foundation ◽  
Theoretical Research ◽  
Design Idea ◽  
Design And Application

Based on the theory and practice of existing composite foundation, this paper discussed the design idea and introduced the bearing capacity and deformation calculation method of the long-short-pile composite foundation. And it verified the feasibility of this method by engineering example. The results show that: the CM long-short-pile composite foundation which can effectively improve the bearing capacity, reduce the building settlement and differential settlement, and fully exert the potential of soil between piles, has theoretical research and engineering application value.

On the Calculation Method of Bearing Capacity of Combined-Pile Composite Foundation

2012 ◽  
Vol 594-597 ◽  
pp. 627-630
Author(s):  
Chang Zhi Zhu
Keyword(s):  
Bearing Capacity ◽  
Calculation Method ◽  
Construction Method ◽  
Composite Foundation ◽  
Loading Test ◽  
Capacity Improvement ◽  
General Influence

Based on study on the existing calculation method of bearing capacity of combined-pile composite foundation，consider the behavior of loaded combined-pile composite foundation and the general influence of construction method to the bearing capacity of soil, two coefficients, soil bearing capacity exertion coefficient and soil bearing capacity improvement coefficient, are introduced，a new step-by-step calculation method of bearing capacity of combined -pile composite foundation is put forward.It shows that computed data is in agreement with experimental date of loading test by example project．

Application of Lime Soil Pile in Collapsible Loess Ground Treatment

2014 ◽  
Vol 1049-1050 ◽  
pp. 256-259 ◽  
Author(s):  
Pei Chen ◽  
Qiang Cui
Keyword(s):  
Bearing Capacity ◽  
Loess Area ◽  
Ground Treatment ◽  
Collapsible Loess ◽  
Practical Engineering ◽  
Natural Foundation ◽  
Technology Foundation ◽  
Design Construction

When the bearing capacity of natural foundation cannot meet load requirements, generally the ground treatment usually can be taken to strengthen it. In this paper, from the practical engineering, the design, construction, and detection of the lime soil pile were introduced. The results show that the lime soil pile in collapsible loess area reinforcement technology foundation is feasible. The bearing capacity and stability of the treated foundation can meet the requirements.

Sign in / Sign up

Export Citation Format

Share Document