1)amount of static cushion deformation,座垫静变形量2)static deformation modulus E v2,静态变形模量Ev23)deformation coordinate,形变座标4)Abutment deformation,坝座变形5)static deformation modulus E_(v2),静态变形模量E_(v2)6)Tight deformation amount in advance of the spring,静弹簧预紧变形量