Research on the Bearing Capacity of Unsupported Random Launching Site

Abstract

Based on the uncertainty of engineering properties of unsupported launching site, fast assessment of preselective site must be done before missile launching, to provide decision for selecting launching position reasonably, and ensure launching missile safely and reliably. Mostly, the launching site is an elastic-plastic structure, the deformation and destruction of launching site is nearly related to the stress and developing process of strain, the support load of the site must be computed before using. In this paper, the bearing load of launching site is analyzed in missile erecting process with the hypothesis that the launching vehicle is bilateral symmetry object. Jack reaction force in erecting process is calculated while the influence of wind load is considered, which provides load criterion for building evaluation model of launching site. The running curve of jack reaction force related to erecting angle is yielded through using pressure data acquisition system. The amplitude and variation trend of jacks reaction force are in well match with theoretical calculation results by analyzing the running curves, and the rationality of result is verified by this way. The research conclusions can offer references for selecting and judging intensity of missile launching site when unsupported random launching way is applied.