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And the effects of foundation displacement excitation,temperature,amplitude and asexternal damping on the nonlinear vibration of elliptic paraboloid cable net with the comparison between steel cable and carbon fiber cable were discussed.At last the conclusions are obtained that the temperature have great influence on steel cable and bat not on carbon fiber cable,and the vibration characteristics of cable net using carbon fiber cables is superior to cable net using steel.

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The main research contents are stated asfollow: 1. Simplified analysis method of space grids structuresDouble-layer space grids have been assumed as sandwich plate, and are analyzed bythe nontraditional theory of plate with consideration of shear deformation and threegeneralized displacements. Using the theory of energy variation, simplified methodsfor bending, stability and vibration analysis of double-layer space grids have been putforward based upon the idea of split rigidity. The formulas for calculating internalforces, displacements, critical load and natural frequency have been given out. Set thestable cables and bearing cables in hyperbolic paraboloid cable nets are all replaced bytruss-cable to form truss-cable nets structures. Natural vibration analysis method fortruss-cable nets structures has been put forward using the energy variation method andRayleigh method.

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Also the response amplitude will be changed with the initial conditions due to the nonlinear properties of the cables.Taking the bending stiffness, cable sag and cable inclination into consideration, the space vibration control of the cables using the visco-elastic dampers in cable-stayed bridges is investigated by joining the center difference method and the state space strategy. Both the maximum modal damping ration and the optimal damper size are obtained, then the practical suggestions are proposed for the design of the dampers. The space nonlinear vibration equations of the cable-damper system are derived, and anew hybrid method for solving the cable-damper system is presented by combing the Newmark method and Pseudo-force technology. According to the known properties of the cable-damper system, the nonlinear transient responses are analyzed under all kinds of excitations. Based on the transient response, the control effectiveness of the visco-elastic dampers is further demonstrated.

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Backstays, middle mast and downward tension ring, horizontal cable, and side cable, spinal cable, valley cable, suspended cable and antiwind cable assisting forming for membrane surface.

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Taking Changzhou Gymnasium as example,some emulation calculations of tension construction of cable-supported lattice shells have been analyzed,especially in the analysis of hoop cable tension method.

以常州體育館索承網(wǎng)殼鋼屋蓋為例欧美人在线，對(duì)索承網(wǎng)殼預(yù)應(yīng)力拉索施工方法中的環(huán)索張拉法進(jìn)行虛擬仿真計(jì)算，分析了由于環(huán)索連接節(jié)點(diǎn)的構(gòu)造處理及環(huán)索張拉點(diǎn)數(shù)量的不同對(duì)大跨度橢球形索承網(wǎng)殼預(yù)應(yīng)力建立效果的影響a黄色视频在线观看，提出了適合該類結(jié)構(gòu)的環(huán)索預(yù)應(yīng)力張拉方法。

Dynamic characteristics of Kiewitt cable-supported lattice shells ;2. Stability and static analysis of cable-supported lattice shells ;3. Taking Changzhou Gymnasium as example,some emulation calculations of tension construction of cable-supported lattice shells have been analyzed,especially in the analysis of hoop cable tension method.

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A detailed model of non-linear parametric excitation vibration coupling the stay cable and the girder, in which the static sag as well as the geometric non-linearity are considered, is proposed in this paper. Based on several numeric examples investigated by the Galerkin method composed with the integration strategy, several kinds of factors effecting stay cable parameter vibration are studied. Another parameter vibration model by the axial excitation is presented and the corresponding nonlinear equations are derived. The smallest excitation amplitude,the transient state and steady state resonance amplitudes, and the changing characteristics of the axial force are obtained by using harmonic balance method. According to numerical examples calculated by numerical integration method, the effects of the inner damping of the stay cables are investigated.

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