大型复杂钢结构施工力学及控制新技术的研究与工程应用

Application and Research of Construction Mechanics and New Control Technology in Large and Complex Steel Structures Construction

随着我国钢材产量持续位居世界首位,钢结构在建筑工程中的应用越来越广泛。特别是大型公共建筑领域,涌现出大量复杂钢结构工程。它们对施工力学分析和控制技术提出了多方面挑战,尤其表现在三维动态变形预调技术的发展,整体提升、落架、起扳、滑移、张拉技术的信息化应用,面向建筑全生命周期结构设计理念的实现以及对施工误差、施工环境温度、焊缝收缩、混凝土收缩徐变等影响成型结构性能的因素的控制研究上。这些技术难点,必须通过能够在时间域和空间域进行协同时变分析的一体化系统来解决。结合国内外具有代表性的大型复杂钢结构工程,阐述了一体化协同时变分析系统在解决上述施工力学和控制问题时的原理、方法以及其中的新算法、新技术,为今后的工程建设提供参考。

With the capacity of steel production in China continuing to be the top of the world,steel structures are used more and more widely in buildings.Especially in large public buildings,lots of complex steel structures come forth.They challenge construction mechanics and control technologies in many aspects,particularly in development of 3-D dynamic pre-set construction deformation technique,informational application of integrated lifting,dismantling,pulling,slipping,tension technique,realization of full-life-oriented structural design,control criteria of construction deviation,influence of construction environment temperature,welding deformation and concrete＇s shrinkage-creep and so on.These problems have to be solved by integrated cooperative time-variation analysis system involved in space domain.Taking typical large complex steel structures home and abroad as examples,the authors point out theories and methods of integrated cooperative time-variation analysis system to solve problems above and introduces the new algorithm and FE element,which can provide reference for further construction analysis of projects.