PROGRAMMA STRATA - NTC2008 - MICROZONAZIONE

STRATA

Strata

Un interessantissimo programma.....

Con Albert Kottke, Ellen M. Rathje

ABSTRACT.........................................................................................iii ACKNOWLEDGMENTS .................................................................. iv
TABLE OF CONTENTS ..................................................................... v
LIST OF FIGURES ........................................................................... vii
LIST OF TABLES .............................................................................. xi
1 INTRODUCTION .............................................................................z
1 2 SITE RESPONSE ANALYSIS.................................  ................... 1
2.1 Equivalent-Linear Site Response Analysis ................................... 3
2.1.1 Linear Elastic Wave Propagation.................................................3
2.1.2 Equivalent-Linear Analysis........................ ................................ 8
2.1.3 Dynamic Soil Properties ........................................................... 10
 2.2 Site Response Methods ............................................................... 16
2.2.1 Time Series Method .................................................................. 16
2.2.2 Random Vibration Theory Method............................................ 19
3 VARIATION OF SITE PROPERTIES.......................................... . 29
3.1 Introduction...................................................................................29
3.2 Random Variables.........................................................................29
3.3 Statistical Models for Soil Properties...........................................32
3.3.1 Layering and Velocity Model ...................................................32
3.3.2 Depth to Bedrock Model...........................................................44
3.3.3 Nonlinear Soil Properties Model..................................... .........45
4 USING STRATA ........................................................................... 47
4.1 Strata Particulars .........................................................................47
4.1.1 Auto-Discretization of Layers............................ .................... 47
4.1.2 Interaction with Tables............................................................ 48
4.1.3 Nonlinear Curves ................................................................... 49
4.1.4 Recorded Motion Dialog Box ............................................... 52
4.1.5 Results Page .......................................................................... 53
 vi 4.2 Glossary of Fields ................................................................55
4.2.1 General Settings Page .......................................   ................. 56
4.2.2 Soil Types Page..................................................................... 59
4.2.3 Soil Profile Page.................................................................... 62
4.2.4 Motion(s) Page...................................................................... 65
4.2.5 Output Specification Page..................................................... 70
4.3 Examples............................................................................... ...72
4.3.1 Example 1: Basic Time Domain .......................................... 73
4.3.2 Example 2: Time Series with Multiple Input Motions ........ 78
4.3.3 Example 3: RVT and Site Variation .................................... 79 REFERENCES.............................................................................. 83 

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