Construction Technology of Rigid-Flexible Composite Piles for Reinforced Thick Overburden and Deep-Buried Soft Soil

2015 ◽  
Vol 744-746 ◽  
pp. 459-463
Author(s):  
Xin Quan Wang ◽  
Yun Liang Cui ◽  
Jian Feng Liang ◽  
Shi Min Zhang ◽  
Yi Qun Tan ◽  
...  
Keyword(s):  
Bulk Material ◽  
Soft Soil ◽  
Soil Layer ◽  
Construction Technology ◽  
Reinforcing Effect ◽  
Soil Mixing ◽  
Rigid Pile ◽  
Body Strength ◽  
Thick Overburden ◽  
Poor Soil

By adopting the conventional pile foundation to treat the area of thick overburden on soft soil, the reinforcing effect can’t meet the use requirement: by adopting the bulk material pile, the lower pile body strength can’t be ensured, and by adopting the cemented soil mixing pile for reinforcing, the pile is difficult to form and the reinforcing depth can’t meet the requirement. This paper aims to overcome the defects of the conventional construction method by adopting different materials to treat, namely, the concrete rigid pile is adopted for reinforcing the soft soil layer with poor soil body quality and the cement mortar flexible pile is adopted for reinforcing the overburden with excellent soil body quality, therefore not only the reinforcing effect is ensured, but also the construction cost is saved.

Application of Cement-Soil Mixing Pile with Bearing Load Plate

2012 ◽  
Vol 170-173 ◽  
pp. 3199-3202
Author(s):  
Peng Li He
Keyword(s):  
Soft Soil ◽  
Soil Layer ◽  
Construction Technology ◽  
Bearing Plate ◽  
Soil Mixing ◽  
Soil Cement ◽  
Bearing Load ◽  
Good Potential ◽  
Layered Ground ◽  
Cement Soil

In order to treat efficiently with the soft multi-layers in the middle of ground, the improved cement-soil double mixed pile is developed and the pile diameter is enlarged in the soft soil layer depth to form the cement-soil mixed column with bearing load plate. The installation mechanism, deep mixing machine, and pile installation procedure of the soil-cement mixed pile with bearing plate is presented. The field test results show that the cement-soil mixing pile with bearing load plate construction technology can ensure the cement mix content and mixing uniformity. The pile strength is greatly higher than conventional cement-soil pile, so it can be used to improved soft multi-layered ground economically and effectively, and it has a good potential application for practice.

Research on Characters and Reinforcement of Silt on the Bottom of Stone Tongue Formed by Reclamation Silt

2013 ◽  
Vol 405-408 ◽  
pp. 203-206
Author(s):  
Wan Li ◽  
Ming Hui Huang ◽  
Mo Li
Keyword(s):  
Cross Section ◽  
Soft Soil ◽  
Soil Layer ◽  
Treatment Method ◽  
Construction Technology ◽  
Deep Drilling ◽  
Layer Depth ◽  
Engineering Requirement ◽  
Sea Reclamation ◽  
Engineering Cost

Drum-shaped stone tongue that there are 3 ~ 5 m thick wedge silt on the bottom formed in the junction of silt and the stone embankment by reclamation silt with mountain stone during the course of backfill. In the paper, on the basis of drills, superficia drilling holes, deep drilling holes and vibrating stop plank model, boundary stone embankment shape and soft soil layer depth were obtained, cross section of stone embankment and stone embankment boundary were revealed during the course of artificial fill, study the stone tongue shape, soft soil around stone tongue, silt characters on stone tongue bottom and reinforcement treatments were studied to obtain treatment method which can satisfy the engineering requirement and can save the engineering cost and provide mature construction technology and method for the similar subgrade treatment of sea reclamation engineering.

scholarly journals Construction Technology and Mechanical Properties of a Cement-Soil Mixing Pile Reinforced by Basalt Fibre

2017 ◽  
Vol 2017 ◽  
pp. 1-14
Author(s):  
Yingwei Hong ◽  
Xiaoping Wu ◽  
Peng Zhang
Keyword(s):  
Mechanical Properties ◽  
Core Sample ◽  
Strength Test ◽  
Construction Technology ◽  
Basalt Fibre ◽  
Soil Mixing ◽  
New Type ◽  
Tensile Splitting Strength ◽  
Cement Soil ◽  
Drilling Core

A new type of cement-soil mixing pile reinforced by basalt fibre is proposed for increasing the bearing capacity of cement-soil mixing piles. This work primarily consists of three parts. First, the process of construction technology is proposed, which could allow uniform mixing of the basalt fibre in cement-soil. Second, the optimal proportions of the compound mixtures and the mechanical properties of the pile material are obtained from unconfined compression strength test, tensile splitting strength test, and triaxial shear test under different conditions. Third, the reliability of the construction technology, optimal proportions, and mechanical properties are verified by testing the mechanical properties of the drilling core sample on site.

scholarly journals CONCERNING THE EXTRACTION OF A SLACK SOIL LAYER FROM COMPRESSIBLE THICKNESS OF FOUNDATION STRATUM OF FINITE WIDTH FOUNDATIONS

2019 ◽  
Vol 7 (4) ◽  
pp. 49-56
Author(s):  
Zaven Ter-Martirosyan ◽  
Armen Ter-martirosyan ◽  
Valery DEMYANENKO
Keyword(s):  
Analytical Solutions ◽  
Soft Soil ◽  
Soil Layer ◽  
Horizontal Displacement ◽  
Creep Model ◽  
Shear Stresses ◽  
Finite Width ◽  
Relative Depth ◽  
Weak Layer ◽  
Horizontal Displacements

The paper provides a quantitative assessment of the deflected mode of foundation stratum of finite width foundation, in the compressible thickness of which there is a slack clay soil layer. A number of criteria for assessing the possibility or impossibility of extruding a slack layer depending on its strength and rheological properties, as well as the relative thickness of the layer to its length (h/l) and the relative depth of the layer (h/d) have been given. Closed analytical solutions are given to determine the rate of Foundation precipitation depending on the rate of extrusion of the weak layer, including taking into account the damped and undamped creep. The analytical solutions in the article are supported by the graphical part made with the help of the Mathcad program. Plots of changes in shear stresses in the layer along the x axis at different distances from the axis and at different values 0, contours of horizontal displacement velocities in the weak layer at different distances from the x axis, plots of horizontal displacement velocities in the middle of the weak layer and plots of horizontal displacement velocities in the weak layer at different distances from the x axis are given. As a calculation model for describing the creep of a slack layer, rheological ones of the soil using power and hyperbolic functions and their modifications have been considered. In addition, most modern rheological models that take into account soil hardening during creep have been considered. Based on these models, the problem is solved by means analytical and numerical methods using the Mathcad PC and the PLAXIS PC according to the Soft Soil Creep model. The graphical part shows the isofields of horizontal displacements for 300 days and 600 days and the corresponding contours of horizontal displacements.

Model Test of Bearing Capacity of WasteTire Assembly Foundation on Soft Soil Layer

2021 ◽  
Vol 69 (7) ◽  
pp. 263-269
Author(s):  
Me ti ◽  
Tri Harianto ◽  
Abdul Rachman Djamaluddin ◽  
Achmad Bakri Muhiddin
Keyword(s):  
Bearing Capacity ◽  
Model Test ◽  
Soft Soil ◽  
Soil Layer
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