Analytical Solution on Vertical Dynamic Responses of PCC Piles in Soft Soil

10.3850/gi152 ◽  
2009 ◽  
Author(s):  
Xuanming Ding ◽  
Hanlong Liu ◽  
Yumin Chen
Keyword(s):  
Analytical Solution ◽  
Soft Soil ◽  
Dynamic Responses

Analytical Solution of 1-D Viscoelastic Consolidation of Soft Soils with Fractional Maxwell Model

2012 ◽  
Vol 157-158 ◽  
pp. 419-423
Author(s):  
Ya Peng Zhang ◽  
Feng Gao
Keyword(s):  
Analytical Solution ◽  
Soft Soil ◽  
Soil Layer ◽  
Viscoelastic Model ◽  
Integral Form ◽  
Maxwell Model ◽  
One Dimensional ◽  
The Laplace Transform ◽  
Fractional Maxwell Model ◽  
The One

Considering the rheological characteristics of soil, think the fractional maxwell with viscoelastic model can be described, the fractional maxwell model into integral form of saturated soft soil layer, the one dimensional compression, through the Laplace transform problems get instantaneous loading and single stage, the analytical solution of the loading conditions.

scholarly journals An Analytical Solution of Dynamic Responses for Seabed under Flow and Standing Wave Coexisting Fields

2015 ◽  
Vol 27 (2) ◽  
pp. 118-134 ◽  
Author(s):  
Kwang-Ho Lee ◽  
Dong-Wook Kim ◽  
Do-Sam Kim ◽  
Tae-Hyung Kim ◽  
Kyu-Han Kim ◽  
...  
Keyword(s):  
Analytical Solution ◽  
Standing Wave ◽  
Dynamic Responses

scholarly journals Analytical solution for dynamic responses of the vertical shaft in a shaft-tunnel junction under transverse loads

2019 ◽  
Vol 126 ◽  
pp. 105779 ◽  
Author(s):  
Jinghua Zhang ◽  
Yong Yuan ◽  
Emilio Bilotta ◽  
Bu Zhang ◽  
Haitao Yu
Keyword(s):  
Analytical Solution ◽  
Tunnel Junction ◽  
Dynamic Responses ◽  
Vertical Shaft ◽  
Transverse Loads

Dynamic Responses of a Sedimentary Valley to Incident Waves

2011 ◽  
Vol 243-249 ◽  
pp. 3945-3951
Author(s):  
Wen I Liao ◽  
Yu Chi Sung ◽  
Jenn Shin Hwang
Keyword(s):  
Fluid Layer ◽  
Soft Soil ◽  
Plane Waves ◽  
Ground Surface ◽  
Scattered Wave ◽  
Least Square ◽  
Dynamic Responses ◽  
Exterior Region ◽  
Wave Fields ◽  
Long Span Bridges

This paper presents the analysis of the dynamic response of a sedimentary valley subjected to incident plane waves. The sediment-filled valley is composed by a fluid layer over a soft soil deposit whose effect is of importance in the design of long span bridges with high piers. The method of analysis makes use of decomposing the problem into interior and exterior regions. In the exterior region, the scattered wave fields are constructed with two linearly independent sequences of Lamb’s singular solutions which satisfy the traction free conditions at ground surface and radiation conditions at infinity. For the interior regions, the wave fields for the fluid layer and soft soil deposit are expressed in terms of wave functions which satisfy the equation of motion. The continuity conditions at the interface of the media are satisfied in the least square sense. The effects of geometric topography, soil amplification and fluid layer under different types of incident harmonic plane waves are analyzed and discussed in detail.

scholarly journals Modelling of a vacuum consolidation project in Vietnam

2020 ◽  
Vol 9 (1) ◽  
pp. 78-101
Author(s):  
Nguyen Trong Nghia
Keyword(s):  
Analytical Solution ◽  
Numerical Modelling ◽  
Plane Strain ◽  
Ground Improvement ◽  
Soft Soil ◽  
Design Tool ◽  
In Situ Monitoring ◽  
Improvement Project ◽  
Prefabricated Vertical Drains ◽  
Prefabricated Vertical Drain

Ground improvement technique by prefabricated vertical drain (PVD) in combination with vacuum preloading is widely used to facilitate consolidation process and reduce residual settlement. However, this technique seem hardly be estimated by both analytical method and numerical method because it has complex boundary conditions (such as vacuum pressure changing with time). Moreover, lateral displacements caused by this technique are also significant problem. Numerical modelling may be an effective design tool to estimate behavior of soft soil treated by this method, however it needs to have a proper calibration of input parameters. This paper introduces a matching scheme for selection of soil/drain properties in analytical solution and numerical modelling (axisymmetric and plane strain conditions) of a ground improvement project by using Prefabricated Vertical Drains (PVD) in combination with vacuum and surcharge preloading. In-situ monitoring data from a case history of a road construction project in Vietnam was adopted in the back-analysis. Analytical solution and axisymmetric analysis can approximate well the field data meanwhile the horizontal permeability need to be adjusted in plane strain scenario to achieve good agreement. In addition, the influence zone of the ground treatment was examined. The residual settlement was investigated to justify the long-term settlement in compliance with the design code. Moreover, the degree of consolidation of non-PVD sub-layers was also studied by means of two different approaches.

Analytical Solution for Plane Strain Consolidation of Soft Soil Stabilised by Stone Columns

2021 ◽  
pp. 753-767
Author(s):  
Sam Doan ◽  
Behzad Fatahi ◽  
Hadi Khabbaz ◽  
Haleh Rasekh
Keyword(s):  
Analytical Solution ◽  
Plane Strain ◽  
Soft Soil ◽  
Stone Columns

Nonlinear analytical solution for one-dimensional consolidation of soft soil under cyclic loading

2006 ◽  
Vol 7 (8) ◽  
pp. 1358-1364 ◽  
Author(s):  
Kang-he Xie ◽  
Tian Qi ◽  
Ya-qin Dong
Keyword(s):  
Cyclic Loading ◽  
Analytical Solution ◽  
Soft Soil ◽  
One Dimensional

Vibration of a Simple Beam Subjected to a Moving Sprung Mass with Initial Velocity and Constant Acceleration

2016 ◽  
Vol 16 (03) ◽  
pp. 1450109 ◽  
Author(s):  
Shih-Hsun Yin
Keyword(s):  
Finite Element ◽  
Analytical Solution ◽  
Initial Velocity ◽  
Time Integration ◽  
Dynamic Responses ◽  
Constant Acceleration ◽  
Element Discretization ◽  
Integration Schemes ◽  
Average Acceleration ◽  
Time Integration Schemes

In this paper, a semi-analytical solution to the problem of a simply supported beam subjected to a moving sprung mass with initial velocity and constant acceleration or deceleration was presented, which serves as a benchmark for checking the performance of other numerical methods. Herein, a finite element modeling procedure was adopted to tackle the vehicle–bridge interaction, and the responses of the vehicle and bridge were computed by time integration schemes such as the Newmark average acceleration, HHT-[Formula: see text], and Wilson-[Formula: see text] methods. In comparison with the semi-analytical solution, the acceleration response of the beam solved by the Newmark average acceleration method shows spurious high-frequency oscillations caused by the finite element discretization. In contrast, the HHT-[Formula: see text] and Wilson-[Formula: see text] methods can dissipate these oscillations and show more accurate results. Moreover, we found that the dynamic responses of the beam and sprung mass were mainly determined by the initial velocity of the sprung mass, but not by the acceleration or deceleration.

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