曲线花束造型结构及铝板无缝饰面施工技术研究

随着个性化、艺术化建筑设计理念的不断深入,人们不再满足于方正规矩的造型,尤其在装饰装修业中,空间曲面造型被广泛应用,如何更好地做好复杂曲面造型,诠释建筑艺术成为技术难题。结合新建郑阜高铁河南段鄢陵站曲线花束造型结构施工项目,介绍其总体施工方案,研究特殊造型钢结构安装、铝板无缝饰面等施工技术,总结技术特点,展望曲线花束造型结构施工技术在建筑装饰应用中的前景。

Exact Controllability with Internal Controls for First-Order Quasilinear Hyperbolic Systems with Zero Eigenvalues

For first-order quasilinear hyperbolic systems with zero eigenvaiues, the author establishes the local exact controllability in a shorter time-period by means of internal controls acting on suitable domains. In particular, under certain special but reasonable hypotheses, the local exact controllability can be realized only by internal controls, and the control time can be arbitrarily small.