大连恒隆广场超长结构分析与设计

Super-long structural analysis and design of Dalian Henglong Square

大连恒隆广场形如"双鱼",平面尺寸超长,场地地形高差较大,存在大型中庭及电影院以致开洞较多,部分区域有钢结构斜面屋顶,部分柱需作转换,存在竖向抗侧力构件不连续的情况。主要介绍超长结构设计的关键问题,包括超长结构混凝土的温度应力分析、结构转换、跃层柱、大跨及长悬臂梁、带高差的钢桁架结构体系等问题。通过对结构在罕遇地震下的非线性分析,对整体结构的抗震性能进行评价。

Dalian ttenglong Square shapes like ＂Pisces＂ with super-long plane size and large elevation difference in site. Theexistence of large atrium and cinemas leads to many structural openings. Steel structure oblique roof exists in some areas.Parts of columns ne, ed to be converted, leading to the discontinuity of vertical lateral-resisting members. The key problemsin super-long structural design were mainly introduced, including temperature stress analysis of super-hmg concretestructur, structural transfer, skip-floor column, large-span and long-cantilever beam and steel truss structural system withelevation difference. The nonlinear analysis of the structure was carried out under rare earthquake to evaluate the seismicperformance of the overall structure.