PRIMJER

 

 ANVELOPA  

      

 UTJECAJNE LINIJE

 

 

 

promjeniti mjerne jedinice [kNm]                LINK

 

- anvelopa

NEW MODEL          LINK à         potpuno novi model

 

            BEAM                       LINK à         definiramo osnovne parametre grede

                                                                       Number of spans                 à   3

Span Length                        à   4 m

Section Properties             à   'default'

 

DEFINE à MATERIJAL             LINK à         definiramo materijal

                                                                                              karakteristike                     à   zadani materijal (BETON)

 

DEFINE à FRAME SECTIONS   LINK à        definiramo poprečni presjek     Add Rectangular

                                                                                                                                            

                                                                                              Materijal                              à   definirani materijal (BETON)

Section Name                      à   30/60

Dimensions                          à   30/60cm

DEFINE à COMBINATIONS à         3 kombinacije + anvelopa

 

ANALYSE à RUN ANALYSE à RUN NOW                LINK à  proračun

 

 

- utjecajne

... pobrišemo jedan raspon.

 

EDIT à DIVIDE FRAMES...                    à        diskretiziramo štapne elemente

Divide into 4 frames             

 

ASSIGN à JOINT à RESTRAINS         LINK à         definiramo Rubne Uvjete

               odabrati točke                    à   lijevi ležal: upeto

                                                                      srednji i desni ležaj: klizni zglobni ležaj

 

 - prisilni pomak ležaja

DEFINE à LOAD CASES             LINK à         definiramo slučaj opterećenja

                                                                                              Load Name                           à   npr. UTJ_P

Type (tip opt.)                     à   SUPER DEAD

 

ASSIGN à JOINT LOAD à DISPLACEMENTS         LINK à         definiramo prisilni kut zaokreta lijevog ležaja

                                                                                                                                             Load Case Name                à   prethodno definirano (UTJ_P)

                                                                                                                                             Rotation about GLOBAL Y               à   1.0

 

 

ANALYSE à RUN ANALYSE à RUN NOW                LINK à  proračun

 

 

DISPLAY à SHOW DEFORMED SHAPE                     LINK à  prikaz progibne linije kojoj odgovara utjecajna linija

                                                                                                                                             Case / Combo                      à  UTJ_P

 

- zamjensko čvorno opterećenje

DEFINE à LOAD CASES             LINK à         definiramo slučaj opterećenje

                                                                                              Load Name                           à   npr. UTJ_Z

Type (tip opt.)                     à   SUPER DEAD

 

ASSIGN à FRAME..... à POINT            LINK à definiramo zamjensko čvorno opterećenje u rubnim točkama promatranog elementa

                                                                                                              Load Case Name                à   UTJ_Z

                                                                                                              Moments                               à   iznos i smjer iz izraza za zamjensko čvorno opterećenje

(Forces                                 à   iznos i smjer iz izraza za zamjensko čvorno opterećenje, kod utjecajne linije za moment: nula)

 

ANALYSE à RUN ANALYSE à RUN NOW                LINK à  proračun

 

DISPLAY à SHOW DEFORMED SHAPE                     LINK à  prikaz progibne linije kojoj odgovara utjecajna linija

                                                                                                                                             Case / Combo                      à  UTJ_Z

 

 

- prikaz pomoću Show Influence lines

DEFINE à BRIDGE LOADS à LANES...                     à  definiramo prometni trak dodavanjem pojedinih štapnih elemenata

                                                                                              Lane Name à  npr. TRAK

                                                                                              Frame à oznaka štapnog elementa (1, 2, ...)

                                                                                              Centerline Offset à 0

                                                                                              Lane Width à 0

                                                                                                          Add

 

 DEFINE à BRIDGE LOADS à VEHICLES…            à  definiramo „opće vozilo“ (koncentriranu pokretnu jediničnu silu)               Add General Vehicle

                                                                                              Vehicle name à  npr. JEDINICA

                                                                                                                            

DEFINE à BRIDGE LOADS à VEHICLE CLASSES…         à  definiramo „skupinu vozila“            Add New Class...

                                                                                                          Vehicle Class Name à   npr.  J

Vehicle Name à   JEDINICA

                                                                                                          Scale Factor à   1.0

 

DEFINE à ANALYSIS CASES...              à  definiramo novi slučaj proračuna za pokretno opterećenje             Add New Case...

Analysis Case Name à   npr.  MOVE

Analysis Case Type à   Moving Load

Loads Applied  à   J

Scale Factor à   1.0 

Add

 

ANALYSE à RUN ANALYSE à RUN NOW                LINK à  proračun

 

DISPLAY à SHOW INFLUENCE LINES           à   prikaz utjecajne linije

            Select Lane à  TRAK

               Analysis Case  à   MOVE

               Frame Label à  koji element, npr.  9

               Plot Along Line Center Line

Relative Distance à   0.5 (sredina elementa)

               Component  à   koja unutarnja sila, npr. moment 3-3