Time-dependent behaviors of working performance of biaxial reinforced composite foundation

2011 ◽  
Author(s):  
Bao-Guo Chen ◽  
Rui-Ping Luo ◽  
Jin-Shan Sun
Keyword(s):  
Composite Foundation ◽  
Time Dependent ◽  
Reinforced Composite ◽  
Working Performance

Model of vibration in drilling into fibre-reinforced composite materials

2009 ◽  
Vol 223 (9) ◽  
pp. 1107-1114
Author(s):  
B W Huang
Keyword(s):  
Composite Materials ◽  
Vibration Amplitude ◽  
Time Dependent ◽  
Process Time ◽  
Drilling Process ◽  
Improve Product Quality ◽  
Analysis Model ◽  
Inhomogeneous Materials ◽  
Reinforced Composite ◽  
Twisted Beam

A model of the dynamic drill characteristics while drilling through fibre-reinforced composite materials (FRCMs) is investigated in this study. Anisotropic and inhomogeneous materials such as FRCMs, which are used to improve product quality, make it possible to improve production rate and avoid drill breakage. Such materials were used to study the dynamic characteristics of the drilling process. A theoretical analysis model for drilling composite materials is proposed. A pre-twisted beam is used to simulate the drill. A moving Winkler-type elastic foundation is used to approximate the drilling process time-dependent boundary. Numerical analysis indicates that the vibration amplitude changes significantly as the drill moves through composite material.

scholarly journals A simplified planar model for geosynthetics reinforced composite foundation subjected to vertical load

2020 ◽  
Vol 198 ◽  
pp. 01039
Author(s):  
Weiming Huang ◽  
Chao Ren ◽  
Jinchang Wang ◽  
Qinyun Yu
Keyword(s):  
Large Scale ◽  
Influential Factors ◽  
Composite Foundation ◽  
Parameter Study ◽  
Deformation Control ◽  
Planar Model ◽  
Winkler Model ◽  
Reinforced Composite ◽  
Pasternak Model ◽  
Pitch Ratio

A simplified planar model for geosynthetics reinforced composite foundation under large-scale loading was established with a new consolidation analysis. The cushion was modeled by modified Pasternak model and the reaction of pile and subsoil was modeled by Winkler model. The effect of geosynthetics layer was directly considered as an elastic cable and the subsoil was divided into numerous columns with only vertical drainage. The solution was obtained by a finite difference based iterative scheme. The feasibility of the model was demonstrated by a case study. Then a parameter study was executed to analyze the effect of several influential factors. The results showed that there is a critical pile –to-pitch ratio that makes the increase of the stiffness of the geosynthetic material the most conducive to deformation control.

Numerical Study of Stone Column Reinforced Composite Foundation of Highway under Static and Seismic Load

2012 ◽  
Vol 602-604 ◽  
pp. 1526-1531
Author(s):  
Min Min Jiang ◽  
Shang Yu Han ◽  
Hong Li
Keyword(s):  
Numerical Study ◽  
Horizontal Displacement ◽  
Calculation Model ◽  
Composite Foundation ◽  
Traffic Load ◽  
Stone Column ◽  
Seismic Load ◽  
Reinforced Composite ◽  
Drainage Effect ◽  
Pile Length

Stone column reinforced composite foundation of highway under static and seismic load is simulated by numerical method. Fist, calculation model was built up, and verified by in situ test. Then the whole construction process of highway stone column reinforced composite foundation is simulated, after 3 years of traffic load, a seismic load was imposed on bottom of the model. Calculation result show that: in construction and run time period, drainage effect of stone column is significant, when pile length reached to 12m, maximum pore pressure in middle of stone column reduced to about 4 kPa, when pile length reached to 10m, effect of pile length on settlement is small; composite foundation has smaller maximum horizontal displacement in stone column; surface and toe of embankment slope is apt to liquefy under seismic load, stone column can eliminate liquefaction potential to a certain extent, especially in composite foundation range.

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