Chapter 11 Arch,Suspension and Shell Systems 11.1.Arch Systems 11.2.Suspension Systems 11.3.Shell Systems 11.4 New Spatial Structures
Chapter 11 Arch, Suspension and Shell Systems 11.1. Arch Systems 11.2. Suspension Systems 11.3. Shell Systems 11.4 New Spatial Structures
11.1.Arch system To optimize the dead weight efficiency, the shape is better to coincide to its pressure resultant,such as parabolic arch or catenary line. Idealistic arch/suspension shape is equivalent to moment diagram
11.1. Arch system To optimize the dead weight efficiency, the shape is better to coincide to its pressure resultant, such as parabolic arch or catenary line. Idealistic arch/suspension shape is equivalent to moment diagram
Fig.11-5 Line of pressure and arch moment V 4Hx(L-x) H- L x (a)竖向均布荷载 (b)垂直于拱轴的均布荷载 (a)中心集中荷载 (b)竖向偏心分布荷载
Fig.11-5 Line of pressure and arch moment H H q 4 H L x y y L2 x ( L x) L y x 2 L y x F x y (a)竖向均布荷载 (b)垂直于拱轴的均布荷载 (a)中心集中荷载 (b)竖向偏心分布荷载 q
Fig.11-1 Beam,arch and suspension system (Idealistic arch/suspension shape is equivalent to moment diagram) 业业业Y IDEALISTIC ARCH SHAPE GIVEN BY BEAM: MOMENT DIAGRAM RISE二DARCH C SECTION M-ARM IS SMALL BEAM BEAM 二=很===二>c=三三==二= SAG=h % IDEALISTIC S元NS1ON SUSPENSION SHAPE GIVEN BY MOMENT DIAGRAM NOTE THAT THC "IDEAL"SHAPE FOR AN ARCH OR SUSPENSION SYSTEM IS EQUIVILENT TO IHE DESIGN LOAD MOMENT DIAGRAM
Fig.11-1 Beam,arch and suspension system (Idealistic arch/suspension shape is equivalent to moment diagram)
Fig.11-5 Line of pressure and arch moment y ↓Vy↓yyb PRESSURE-LINE乙、之二 M IN ARCH =He ARcH AKIS UNDER(NON-UNIFORM）∠ Wp +WL H-> BEAM =HA (W2+4N) (2+4WL)
Fig.11-5 Line of pressure and arch moment