Authentication email has already been sent, please check your email box: and activate it as soon as possible.
You can login to My Profile and manage your email alerts.
If you haven’t received the email, please:
|
|
There are 5 papers published in subject: > since this site started. |
Results per page: |
Select Subject |
Select/Unselect all | For Selected Papers |
Saved Papers
Please enter a name for this paper to be shown in your personalized Saved Papers list
|
1. A Simple Anisotropic Bounding Surface Model for Saturated Soft Clay Considering Degradation under Cyclic Loading | |||
YANG Zhaohuan,WANG Jianhua | |||
Civil and Architectural Engineering 10 May 2017 | |||
Show/Hide Abstract | Cite this paper︱Full-text: PDF (0 B) | |||
Abstract:In this study, a simple elastoplastic bounding surface plasticity model accounting for the degradation of saturated soft clay under cyclic loading is developed on the base of critical state soil mechanics and the bounding surface plasticity. The associated flow rule is adopted for simplicity. A preferable rotational hardening rule proposed by Dafalias is generalized into the domain of dynamic model after comparing different kinds of rotational hardening rules to describe the development of anisotropy in soft clay. A new interpolation function of plastic modulus associated with the length of the deviatoric plastic shear strain trajectory is introduced into the model to describe cyclic degradation. Compared with the existing cyclic elastoplastic model, the amount of parameters needed in the proposed model are relative fewer. Merely 9 material parameters with robust physical meaning including 5 Modified Cam Clay model constants are required. The applicability of the constitutive to predict the saturated soft clay's response is validated by comparing the model simulation of monotonic and cyclic loading behavior under undrained conditions with experimental results. The proposed model is capable of capturing the essential features of response in saturated clay, including anisotropy and degradation. | |||
TO cite this article:YANG Zhaohuan,WANG Jianhua. A Simple Anisotropic Bounding Surface Model for Saturated Soft Clay Considering Degradation under Cyclic Loading[OL].[10 May 2017] http://en.paper.edu.cn/en_releasepaper/content/4728921 |
2. Liquefaction Hazard Zonation based on a Probabilistic Model of Lateral Spread Exceeding a Pre-defined Threshold | |||
LIU Fang,LI Zhen,LI Peizhen,JIANG Mingjing | |||
Civil and Architectural Engineering 24 February 2014 | |||
Show/Hide Abstract | Cite this paper︱Full-text: PDF (0 B) | |||
Abstract:Lateral spreads have been extensively found near waterfronts after major earthquakes as a consequence of liquefied saturated sandy soils, and they posed significant detrimental effects on widely-spreading urban lifelines. This paper proposes a displacement-based procedure for liquefaction hazard zonation by using a newly-developed probabilistic model of liquefaction-induced lateral displacements exceeding a pre-defined threshold. The probabilistic function was formulated from a regression analysis on case histories of liquefaction by employing probit modeling. The procedure for generating the liquefaction hazard map with this proposed model was demonstrated through a selected case study. The comparison between the predicted probability and the field measurements indicates that the model can provide reasonable prediction particularly in cases of large deformations. The displacement-based procedure is promising, providing probability map that highlights the regions where relatively large deformations have been observed. | |||
TO cite this article:LIU Fang,LI Zhen,LI Peizhen, et al. Liquefaction Hazard Zonation based on a Probabilistic Model of Lateral Spread Exceeding a Pre-defined Threshold[OL].[24 February 2014] http://en.paper.edu.cn/en_releasepaper/content/4586410 |
3. UH MODEL FOR SOILS AND ITS EXTENTION | |||
YAO Yangping | |||
Civil and Architectural Engineering 24 December 2012 | |||
Show/Hide Abstract | Cite this paper︱Full-text: PDF (0 B) | |||
Abstract:Based on the relationship between the current yield surface and the reference yield surface, the UH mode has been proposed. The key feature of the UH model is the adoption of a unified hardening parameter that is independent of stress paths. To evaluate the potential peak stress ratio of overconsolidated clays, a parabolic Hvorslev envelope rather than a straight line is adopted to modify the UH model. This modification leads to more realistic predictions on highly overconsolidated clays than with a straight line in the original UH model, and is consistent with critical state soil mechanics wherein the higher peak stress ratio shown in overconsolidated clays is a result of dilatancy rather than cohesion. The UH model has been developed and extended to consider the influence of temperature. | |||
TO cite this article:YAO Yangping. UH MODEL FOR SOILS AND ITS EXTENTION[OL].[24 December 2012] http://en.paper.edu.cn/en_releasepaper/content/4503597 |
4. Micro-deformation mechanism of granular materials under different boundary conditions based on DEM simulation | |||
TONG Zhaoxia,ZHOU Min,YAO Yangping | |||
Civil and Architectural Engineering 22 February 2012 | |||
Show/Hide Abstract | Cite this paper︱Full-text: PDF (0 B) | |||
Abstract:Series of biaxial compression simulations are carried out to investigate the effects of boundary condition on the deformation of granular materials by using DEM. The parameters used in DEM are validated by the biaxial compression experiments on elliptical steel bars. The effects of boundary condition on the stress-strain relationship are analyzed. And special focus are put in the analysis of particle displacement, particle rotation, void distribution, particle long axis orientation and contact force with the development of deformation. | |||
TO cite this article:TONG Zhaoxia,ZHOU Min,YAO Yangping. Micro-deformation mechanism of granular materials under different boundary conditions based on DEM simulation[OL].[22 February 2012] http://en.paper.edu.cn/en_releasepaper/content/4467605 |
5. Environmental Impact Assessement of Earthwork Activity | |||
LI Xiaodong,KONG Xiangqin,ZHANG Zhihui | |||
Civil and Architectural Engineering 02 January 2011 | |||
Show/Hide Abstract | Cite this paper︱Full-text: PDF (0 B) | |||
Abstract:With the aim to establish an integrated and objective model applicable to green earthwork assessment just at the pre-construction state, this paper focuses on the application of life-cycle assessment theory and methods to the qualitative analysis of resources and energy input-output effect and pollutants emission impact during the earthwork phase. The study gives the outline of this model include the units works breakdown technique, the input-output analysis of units and the assessment procedures. It's expected that the paper can offer us a general overview how to identify and quantitative assess the environment impacts during the earthwork phase, by which, a pre-control plan for green construction can be easily established. | |||
TO cite this article:LI Xiaodong,KONG Xiangqin,ZHANG Zhihui. Environmental Impact Assessement of Earthwork Activity[OL].[ 2 January 2011] http://en.paper.edu.cn/en_releasepaper/content/4403270 |
Select/Unselect all | For Selected Papers |
Saved Papers
Please enter a name for this paper to be shown in your personalized Saved Papers list
|
Results per page: |
About Sciencepaper Online | Privacy Policy | Terms & Conditions | Contact Us
© 2003-2012 Sciencepaper Online. unless otherwise stated