汕头海湾二桥模型在风洞试验过程中意外的发生了静风失稳现象。为了彻底探明这一现象，首次提出了非线性空气静力稳定理论。通过运用所编制的程序对这一实例展开深入、全面的力学分析，获得了与试验极为接近的力学行为及临界风速值，并探明了失稳的力学机理，从而初步证明这一理论的适用性及程序的正确性。 Shantou Bay Bridge model accidentally occurred during the wind tunnel test of static wind instability. In order to completely prove this phenomenon, for the first time proposed nonlinear aerostatic stability theory. Through the application of the program compiled in-depth and comprehensive mechanical analysis of this example, the mechanics behavior and the critical wind velocity value which are very close to the experiment were obtained, and the mechanics of instability was proved, which proves the application of this theory The correctness of the sex and procedure.