numerisk analys av explosionslaster i bergtunnlar - Rosengren ...

More documents

Recommendations

Info

Numerisk analys av explosionslaster i bergtunnlar INNEHÅLLSFÖRTECKNING 1 INTRODUKTION............................................................................................................ 1 1.1 BAKGRUND ................................................................................................................. 1 1.2 SYFTE OCH MÅL .......................................................................................................... 3 1.3 OMFATTNING .............................................................................................................. 3 2 FÖRUTSÄTTNINGAR ................................................................................................... 5 2.1 VAL AV ANALYSMETOD OCH PROGRAMVARA.............................................................. 5 2.2 PROBLEMGEOMETRI .................................................................................................... 6 2.3 BERGMASSANS HÅLLFASTHETS- OCH DEFORMATIONSEGENSKAPER............................ 8 2.3.1 Allmänt ............................................................................................................... 8 2.3.2 Materialmodell................................................................................................... 9 2.3.3 Materialparametrar ......................................................................................... 10 2.4 DRÄNERINGSFÖRHÅLLANDEN ................................................................................... 11 2.5 IN-SITUSPÄNNINGAR ................................................................................................. 11 2.6 BERGFÖRSTÄRKNING ................................................................................................ 11 2.6.1 Allmänt ............................................................................................................. 11 2.6.2 Bergbultar ........................................................................................................ 14 2.6.3 Sprutbetong ...................................................................................................... 20 2.6.4 Samverkan mellan bultar och sprutbetong....................................................... 25 2.6.5 Samverkan mellan sprutbetong och berg......................................................... 25 2.7 DYNAMISK LAST ENLIGT TUNNEL 99......................................................................... 26 2.8 DYNAMISKA BELASTNINGSFALL................................................................................ 28 3 UPPRÄTTANDE AV NUMERISK MODELL ........................................................... 29 3.1 VÅGPROPAGERING OCH FREKVENSANALYS............................................................... 29 3.1.1 Allmänt ............................................................................................................. 29 3.1.2 Aktuell applikation ........................................................................................... 30 3.2 MODELLGEOMETRI.................................................................................................... 35 3.3 RANDVILLKOR .......................................................................................................... 36 3.3.1 Statisk analys.................................................................................................... 36 3.3.2 Dynamisk analys .............................................................................................. 36 3.4 APPLICERING AV DYNAMISK LAST............................................................................. 37 3.4.1 Allmänt ............................................................................................................. 37 3.4.2 Aktuell applikation ........................................................................................... 37 3.5 MEKANISK DÄMPNING............................................................................................... 38 3.5.1 Allmänt ............................................................................................................. 38 3.5.2 Aktuell applikation ........................................................................................... 40 3.6 MODELLERINGSSEKVENS OCH UTFÖRDA MODELLER ................................................. 40 iii
Numerisk analys av explosionslaster i bergtunnlar 4 RESULTAT .................................................................................................................... 42 4.1 STATISKA ANALYSER (MODELL 0) ............................................................................ 42 4.2 DYNAMISKA ANALYSER (MODELL I-III) ................................................................... 53 4.2.1 Modell I ............................................................................................................ 53 4.2.2 Modell II........................................................................................................... 58 4.2.3 Modell III.......................................................................................................... 68 5 DISKUSSION ................................................................................................................. 76 5.1 DYNAMISK LAST........................................................................................................ 76 5.2 STORSKALIG STABILITET........................................................................................... 76 5.3 LOKAL STABILITET.................................................................................................... 77 5.4 MODELLBEGRÄNSNINGAR......................................................................................... 78 5.4.1 Allmänt ............................................................................................................. 78 5.4.2 Analysmetod ..................................................................................................... 78 5.4.3 Materialmodell................................................................................................. 79 5.4.4 2D/3D-ekvivalens............................................................................................. 80 6 SLUTSATSER OCH REKOMMENDATIONER ...................................................... 82 7 REFERENSER............................................................................................................... 84 BILAGOR Bilaga 1: Short description of FLAC version 4.0 Bilaga 2: Beskrivning av oelastisk sprutbetongmodell enligt metod B Bilaga 3: CD innehållande ”Movies” iv
Page 1 and 2: NUMERISK ANALYS AV EXPLOSIONSLASTER
Page 3: Numerisk analys av explosionslaster
Page 7 and 8: Numerisk analys av explosionslaster
Page 19 and 20: 2.6.2 Bergbultar Numerisk analys av
Page 25 and 26: 2.6.3 Sprutbetong Numerisk analys a
Page 47 and 48: 4 RESULTAT Numerisk analys av explo
Page 55 and 56:
Numerisk analys av explosionslaster
Page 57 and 58:
Page 59 and 60:
Page 61 and 62:
Page 63 and 64:
Page 65 and 66:
Page 67 and 68:
Page 69 and 70:
Page 71 and 72:
Page 73 and 74:
4.2.3 Modell III Numerisk analys av
Page 75 and 76:
Page 77 and 78:
Page 79 and 80:
Page 81 and 82:
Page 83 and 84:
Page 85 and 86:
Page 87 and 88:
Page 89 and 90:
show all

numerisk analys av explosionslaster i bergtunnlar - Rosengren ...

Create successful ePaper yourself

Delete template?

Save as template?