大连期货大厦钢-混凝土混合结构设计

Structural Design of Dalian Commodity Mansion

大连期货大厦为超高层双塔，采用钢筋混凝土核芯筒-钢框架混合结构体系。结合工程特点介绍了超限对策。风洞试验结果发现，得到的双塔楼的顺风向等效静力风荷载比单塔楼的大10％～20％，且横向风振的影响不容忽视。探讨了嵌岩锚桩设计及确定基岩承载力的方法，得出岩石地基承载力在不同受力情况下具有不同的结果。结合理论及试验，给出了两端简支H型钢梁开设大尺寸矩形孔的加固方法，采用纵向和横向加劲肋的加固方法时，横向加劲肋厚度和宽度等于梁翼缘，纵向加劲肋厚度和宽度等于梁腹板。结合混凝土浇注试验，介绍了新型外加剂、新工艺在方钢管混凝土柱中的应用。

Dalian commodity mansion is a superhigh twin tower building with reinforced concrete tube-steel frame hybrid structure. Combined with the characteristics of the project, the way to analyze the super-high building is introduced. Based on the results of wind experiment, the conclusion was drawn that the along-wind equivalent static wind loads of twin tower is 10 % - 20% bigger than that of single-tower and the transverse wind-induced vibration can not be ignored. It discusses the design of rock-anchored piles embedded in rock and the bearing capacity determination of rock foundation, which shows the bearing capacity of rock foundation is different in the different situation. Combined with the theory and the rcsuhs of experiment, the reinforced way of simply supported beams H steel with set great size rectangular opening is presented. When the reinforced ways of longitudinal and transverse rib is used in the projects, the height and width of transverse rib come up to the flange of beam, and the height and width of longitudinal rib come up to the web of beam. At last, combined with concrete experiment, the new admixture and new techniques applied in concrete-filled rectangular steel tube columns are introduced.