1 PhÇn tö chÞu kÐo nÐn däc trôc EA EA − a [ k] = a − EA EA a a PhÇn tö giµn ph¼ng EA a [ k ] = EA − a EA a EA a 0 − 0 0 0 0 PhÇn tö dÇm chÞu uèn ph¼ng 12 EJ z a3 EJ z [ k] = a − 12 EJ z a3 EJ z a2 EJ z a2 EJ z a EJ − 2z a EJ z a 12 EJ z a3 EJ − 2z a 12 EJ z a3 EJ − 2z a − EJ z a2 EJ z a EJ z − a EJ z a PhÇn tö chÞu xo¾n thuÇn tóy GJ x [ k] = a − GJ x a GJ x a GJ x a − PhÇn tö khung ph¼ng EA a [ k ] = − EA a − EA a 0 12 EJ z a3 EJ z a2 EJ z a2 EJ z a 0 −12 EJ z a3 EJ z a2 −6 EJ z a2 EJ z a3 0 12 EJ z a3 −6 EJ z a2 EJ z a2 EJ z a3 −6 EJ z a2 EJ z a −12 EJ z a3 −6 EJ z a2 EA a 0 0 PhÇn tö kh«ng gian EA a [ k ] = − EA a 0 0 − EA a 0 0 12 EJ z a3 0 EJ z a2 −12 EJ z a3 0 0 0 0 0 0 0 12 EJ y a −6 EJ y a2 GJ x a −6 EJ y a EJ y a −12 EJ y a EJ y a2 −GJ x a −6 EJ y a2 EJ y a EJ z a2 0 EJ z a EJ z a2 0 0 0 0 EA a 0 0 −12 EJ z a3 0 EJ z a2 12 EJ z a3 0 0 0 0 0 0 EJ z a −6 EJ z a2 0 −6 EJ z a2 −12 EJ y a −6 EJ y −GJ x a 0 a EJ y a EJ y a 12 EJ y a EJ y GJ x a 0 a EJ y a2 EJ y a −6 EJ z a2 EJ z a −6 EJ z a2 EJ z a