نتایج جستجو برای: liquefaction hazard

تعداد نتایج: 68553  

2013
Makoto Kodama Toyoaki Matsuura Yoshiaki Hara

The aim of the study is to clarify the vitreous body structure and liquefaction phenomena. It was found that when melting a frozen rabbit vitreous body, the gel-sol transition phenomenon occurs and the gel structure is broken. This is almost like the liquefaction of the vitreous body in vivo. We try to clarify the liquefaction phenomenon by using this animal model. The native vitreous body has ...

Journal: :مهندسی عمران فردوسی 0
علیرضا باقریه ایمان لولویی امیرحسین باقریه

earthquakes could have catastrophic impacts on tunnels and buried structures. liquefaction phenomenon is one of the most destructive effects of earthquakes. liquefaction results in decreasing effective stress and this consequently leads to decreases in shear strength of the soil. as a result, large deformation in both soil and buried structure occurs. moreover, liquefaction causes soil boiling,...

2005
Russell L. Wheeler

Paleoseismological study of geologic features thought to result from Quaternary tectonic faulting can characterize the frequencies and sizes of large prehistoric and historical earthquakes, thereby improving the accuracy and precision of seismichazard assessments. Greater accuracy and precision can reduce the likelihood of both underprotection and unnecessary design and construction costs. Publ...

2008
Lingyun Liang Zhihuai Mao Yebo Li Caixia Wan Tipeng Wang Lianhui Zhang Lingyan Zhang

The liquefaction of crop residues in the presence of ethylene glycol, ethylene carbonate, or polyethylene glycol using sulfuric acid as a catalyst was studied. For all experiments, the liquefaction was conducted at 160°C and atmospheric pressure. The mass ratio of feedstock to liquefaction solvents used in all the experiments was 30:100. The results show that the acid catalyzed liquefaction pro...

2011
Zhifeng Zheng Hui Pan Yuanbo Huang Xuliang Zhang Hao Feng

Comparing to the conventional bath heating, the effects of liquefaction parameters on the degree of liquefaction of wood in polyhydric alcohols by using microwave as an energy source were evaluated. Polyurethane foams were successfully prepared from the liquefied biomass-based polyols. The effects of heating methods (conventional bath heating and microwave) and liquefaction reaction time on the...

Journal: :Applied sciences 2023

In engineering practice, properly characterizing the spatial distribution of soil liquefaction potential and induced surface settlement is essential for seismic hazard assessment mitigation. However, geotechnical site investigations (e.g., cone penetration test (CPT)) usually provide limited sparse data with high accuracy. Geophysical surveys abundant two-dimensional (2D) data, yet their accura...

Journal: :Journal of Geophysics and Engineering 2021

Abstract A site-specific probabilistic seismic hazard assessment (PSHA) was achieved in the area of special economic zone authority Duqm, involving evaluation at bedrock conditions and assurance potential site influence on ground motion bedrock. Appropriate source ground-motion prediction models were selected hazards identified by means 5% damped Uniform Hazard Spectra (UHS) for three return pe...

Journal: :International Journal of Design & Nature and Ecodynamics 2020

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