دانلود کتب و مقالات مرتبط با روانگرایی خاک Liquefaction

 

روانگرایی خاک (Liquefaction) پدیده ای است که بدلیل کاهش سختی و مقاومت خاک در اثر وارد آمدن نیروی زلزله یا یک بارگذاری سریع صورت می گیرد. روانگرایی خاک و پدیده های مرتبط با آن در زلزله های سالیان گذشته صدمات زیادی را در سراسر جهان وارد کرده اند.روانگرایی فقط در خاکهای اشباع صورت می گیرد.آب موجود بین ذرات خاک فشاری را به ذرات خاک وارد می کند که این فشار سبب می شود ذرات خاک بطور محکم بهم فشرده شوند. پیش از زلزله فشار آب نسبتآ کم است اما با وقوع لرزش زلزله فشار آب افزایش یافته بطوریکه ذرات خاک بسرعت در کنارهم شروع به حرکت می کنند. هرچند اغلب لرزش زمین سبب افزایش فشار آب منفذی می گردد اما فعالیت های مرتبط ساختمانی همانند انفجار یا آبگیری مخازن و بطور کلی تغییر در تنش ارتجاعی زمین از طریق بارگذاری و باربرداری نیز می تواند سبب روانگرایی در خاک گردد.همانگونه که در شکل مشاهده می کنید  با وقوع روانگرایی مقاومت خاک کاهش یافته و توانایی خاک زیر پی برای حفظ پایداری ساختمانها و پلها از بین می رود. 

همچنین خاک روان شده پشت دیوارهای حائل می تواند سبب نشست و تخریب دیوار حائل گردد.چنانچه افزایش فشار آب منفذی در پشت سدها نیز میتواند سبب زمین لغزه و شکستن سدها گردد. روانگرایی خاک در بسیاری از زلزله های سالیان گذشته مشاهده شده است. به عنوان نمونه می توان به زلزله های آلاسکا (Alaska,USA,1964)، نیگاتا (Niigata,Japan,1964) ، لوماپرییتا (Loma Prieta,USA,1989) و کوبه (Kobe,Japan,1995) اشاره کرد.

 

Recent Advances in Soil Liquefaction Engineering: A Unified and Consistent Framework

GUIDELINES FOR ANALYZING AND MITIGATING LIQUEFACTION IN CALIFORNIA

Determination of Liquefaction Triggering from CPT

Methods for Improvement of Liquefiable Soil Conditions

LIQUEFACTION DETECTION FROM STRONG MOTION RECORDS

Dynamic properties and liquefaction potential of soils

Soil Liquefaction Response In Mid-America Evaluated By Seismic Piezocone Tests

Soil Liquefaction

Liquefaction potential of sand by torsional shear test

Centrifuge Research of Liquefaction Phenomena

Undrained shear strength of clean sands to trigger flow liquefaction

Flow potential of sand during liquefaction

Flow Deformation of Liquefied Sand Under Constant Shear Load

Liquefaction of sand in simple shear condition

Energy-Based Evaluation and Remediation of Liquefiable Soils

Ground Improvement for Liquefaction Mitigation at Existing Highway Bridges

Passive Site Remediation for Mitigation of Liquefaction Risk

Liquefaction and dam failures

The Effects Of Non-Plastic and Plastic Fines On The Liquefaction Of Sandy Soils

Condition indicators for liquefaction susceptibility with focus on silty soils

New criteria for distinguishing between silts and clays that are susceptible to liquefaction versus cyclic failure

Semi-empirical procedures for evaluating liquefaction potential during earthquakes

State normalization of penetration resistances and the effect of overburden stress on liquefaction resistance

Interpretation and visualization of model test data for slope failure in liquefying soil

Analysis of a void redistribution mechanism in liquefied soil

Void redistribution and localized shear strains in slopes during liquefaction

Evaluating liquefaction resistance at high overburden stresses

Evaluation of CPT liquefaction analysis methods against inclinometer data from Moss Landing

Evaluating the potential for liquefaction or cyclic failure of silts and clays

Investigation and evaluation of liquefaction related ground displacements at Moss Landing during the 1989 Loma Prieta earthquake

Prediction of maximum wave-induced liquefaction in porous seabed using Multi-Artificial Neural Network model

Strength of post-liquefaction flows - a speculative velocity-dependent model

-An alternative mechanism of pile failure in liquefiable deposits during earthquakes

Errors in design leading to pile failures during seismic liquefaction

Simulation of post-liquefaction deformation of sand

Optimization for calibration of liquefaction constitutive model

Centrifuge and numerical modeling of soil liquefaction at very large depths

Integrity of landfills founded on liquefiable foundation - Data report on centrifuge tests IT05, IT07 and IT08

Computational Modeling of Cyclic Mobility and Post-Liquefaction Site Response

Influence of Permeability on Liquefaction-Induced Shear Deformation

Numerical Analysis of Embankment Foundation Liquefaction Countermeasures

Liquefaction of Reclaimed Island in Kobe

Liquefaction Constitutive Model

Modeling of Liquefaction-Induced Shear Deformations

The Role of Paleo-Liquefaction Studies in Performance-Based Earthquake Engineering in the Central-Eastern United States

A Closer Look at Arias Intensity-Based Liquefaction Evaluation Procedures

The Number of Equivalent Cycles Concept for Liquefaction Evaluations ? Revisited

Geotechnical Analysis of Paleoseismic Shaking Using Liquefaction Features: Part II. Field Examples

Geotechnical Analysis of Paleoseismic Shaking Using Liquefaction Liquefaction Features: Part I. Major Updating of Analysis Techniques

Paleoliquefaction Studies in Continental Setting: Geologic and Geotechnical Factors in Interpretations and Back-Analysis

A CONTINUUM-DISCRETE MODEL FOR GRANULAR SOIL LIQUEFACTION

Remapping Scheme in ALE Method for Liquefaction Simulation

Earthquake Induced Hydraulic Fracturing and Delayed Liquefaction in Heterogeneous Saturated Soils

Boundary effects in dynamic centrifuge modelling of liquefaction in sand deposits

CPT-Based Probabilitic Assessment of Seismic Soil Liquefaction Initiation

Numerical modeling of liquefaction and comparison with centrifuge tests

Seismic liquefaction: centrifuge and numerical modeling

Numerical modeling of soil liquefaction at slope site

Practical constitutive model for soil liquefaction

Response of Sloping Ground with Liquefiable Materials during an Earthquake: a class A prediction

Modeling flow liquefaction, its mitigation, and comparison with centrifuge tests

Flow liquefaction due to mixing of layered deposits

A swinging plane model for soil liquefaction analysis

Correlation of liquefaction resistance with shear wave velocity based on laboratory study using bender element

Liquefaction Evaluation for Rio Blanco Offstream Dam. Comparison between Existenting Methodologies.

Liquefaction probability mapping in greater Boston

Lateral Stress Effects on CPT Liquefaction Resistance Correlations

Evaluation of Liquefaction Resistance of Clean and Silty Sands Based on CPT Cone Penetration Resistance

Liquefaction of Cohesive Sediments caused by Waves

Damage Induced By Liquefaction in the Marina District of San Francisco after the 1989 Loma Prieta Earthquake

An Analysis of the Sand Boils Due To Liquefaction in the San Francisco Marina District during the 1989 Loma Prieta Earthquake

Verification of Numerical Procedures for the Analysis of Soil Liquefaction Problems

Liquefaction-induced ground deformation and failure

Frame structures founded on liquefiable soil - Data report on centrifuge tests BM1, BM2 and BM3

Use of containment walls as a liquefaction remediation method for existing buildings - Data report on centrifuge tests WA1P, WA1F and WA3

Use of cemented zones as a lequefaction remediation mthod for existing buildings - Data report on centrifuge tests CZ1P CZ1F and CZ3

Use of inclined micro-piles as a lequefaction remediation method for existing buildings - Data report on centrifuge tests MP1, MP2 and MP3

Geotechnical analysis of paleoseismic shaking using liquefaction effects: a major updating

Engineering geologic and geotechnical analysis of paleoseismic shaking using liquefaction effects: field examples

Field occurrences of liquefaction-induced features: a primer for engineering geologic analysis of paleoseismic shaking

Use of laboratory data to confirm yield and liquefied strength ratio concepts

Yield strength ratio and liquefaction analysis of slopes and embankments

Liquefied strength ratio from liquefaction case histories

Paleoliquefaction studies in continental settings

Interpretation of penetration resistance for back-analysis at sites of previous liquefaction

1907 Static liquefaction flow failure of the north dike of Wachusett Dam

Liquefaction resistance using CPT and field case histories

The role of paleo-liquefaction studies in performance-based earthquake engineering in the Central-Eastern United States

Strength ratio-based liquefaction analysis of sloping ground

Liquefaction analysis of Lower San Fernando Dam using strength ratios

Geotechnical analysis of paleoseismic shaking using liquefaction features: Part I. Major updating of techniques for analysis

Liquefaction analysis of level and sloping ground using field case histories and penetration resistance

Paleoliquefaction studies in continental settings ? geologic and geotechnical factors in interpretation and back-analysis

Mechanics of Dilatancy and its Application to Liquefaction Problems

طراحی فونداسیون های شمعی در خاکهای با قابلیت روانگرایی
 
Product Details
Hardcover: 232 pages
Publisher: Imperial College Press (September 15, 2009)
Language: English
ISBN-10: 1848163622
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