广州猎德大桥主桥设计

结合猎德大桥工程概况,从跨径布置、主梁、主塔及缆索系统等方面介绍了该悬索桥结构的设计,该桥突破了传统桥塔的外观形状,并采用了独特创新的贝壳造型,其景观标致性强,不失为广州的标志性构筑物。

The Continuum Analytical Method of Steel Frame- Reinforced Concrete Shear Wall Mixed Structure

The inter-story drift stiffness considered the semirigidity of beam and column joints connection, and P-Delta second order effect of steel frame parts in the mixed structure is presented in the paper. After considering on the influence of semirigidity between steel beams and steel columns, second order effect of beam-column members for steel frame and structural second order effect, the traditional continuum analytial method used in RC shear-frames wall structure is developed to steel frames-reinforced concrete shear wall mixed structure subject to horizontal load in this paper. A continuum approach, which is suitable for analyzing steel frames-reinforced concrete shear wall mixed structure subject to horizontal load, is presented. The method is relatively simple and more practical. It will be referred to structural design for steel frames-reinforced concrete shear wall mixed structure.

Numerical Analysis of the Composite Connection of Steel Joist Embedded in Concrete Girder

So far, numerous numerical studies have been conducted on the behavior of Composite Reinforced Concrete-Steel （RCS） beam-to-column connections. However, the lack of studies regarding the steel joist-concrete girder connection has yet to be addressed through comprehensive finite element methods to get an understanding of influential parameters. Hence, in this paper, composite connection of embedded steel joist in concrete girder is investigated with an appropriate finite element software, namely, ABAQUS. The validity of the proposed model is examined by the comparison made with the test data in literature. Results indicate that maximum bending capacity of the connection is achieved when embedment ratio is 1.78. Moreover, double web angles in the embedment region significantly reduce the embedment length required to achieve the maximum bending capacity. Finally, damage analyses show that bending capacity of concrete girder is slightly reduced in the connection zone.

渭河特大桥钢—混结合段设计研究

钢—混凝土结合段是混合梁的关键部位,决定着混合梁设计的成败。依托渭河特大桥设计与优化,提出结合段整体设计的概念、原则和思路,着重介绍结合段构造选型以及设计与优化的思路、过程、方法,详细描述结合段构造设计成果,并利用有限元软件建立结合段局部空间模型,数值模拟分析结果表明,钢-混凝土结合段受力较均衡、变形连续协调、总体应力水平总体满足设计要求,说明结合段整体设计和构造设计合理可靠。