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贵阳某商业建筑为复杂超长和抗震超限结构,大跨楼盖和大悬挑结构多,平面尺寸达到281m×290m。详细研究项目中的设计难点,紧抓控制质量和保证施工进度的关系,精进分析技术,提出具体而有效的应对措施以保证结构的安全性和经济性,解决了设计进度和设计质量的矛盾。详细介绍项目设计过程中遇到的结构设计难题和应对措施。针对超长结构,宜合理考虑桩侧刚度以减小基础对结构的约束;桩基施工过程中结构柱位调整较大时,基础选型宜充分考虑施工现状,尽量利用好已完工的基桩,从而缩短工期,降低工程造价;对于大跨楼盖结构,应尽量增加结构的冗余度,宜避免采用悬挑大梁作为主要承重构件。
A commercial building in Guiyang is a complicated long-span and earthquake-resistant overrun structure, with large-span floor coverings and large cantilevered structures with a plane size of 281m × 290m. Detailed research projects in the design difficulties, grasping the quality of control and ensure the progress of the construction of the relationship between the precision analysis of technology, put forward specific and effective response measures to ensure structural safety and economy, to solve the design schedule and design quality contradictions. Describe the structural design problems and countermeasures encountered in the project design process in detail. For the long structure, should consider the stiffness of the pile side to reduce the basic constraints on the structure; structural column pillar during the construction of a large adjustment, the foundation selection should take full account of the construction status, as far as possible to make good use of the completed pile , So as to shorten the construction period and reduce the construction cost; for the large-span floor structure, the redundancy of the structure should be increased as much as possible to avoid using the cantilevered beam as the main load-bearing component.