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一、引言同济大学李国豪科研组受上海市科委的委托,为配合上海市政工程设计院设计的上海黄浦江大桥全预应力混凝土斜张桥的主方案,进行了结合梁斜张桥比较方案的可行性研究[1](图1)。本方案以结合梁桥面,幅射形密索布置,柔性钢筋混凝土桥塔以及悬浮方式为基本结构特色。它综合吸收了近十年国外建造大跨度斜张桥的先进经验。美国著明桥梁工程师D·AFirmage对斜张桥的经济研究表明:密索、辐射形的索型最为经济合理。西德著名的桥梁专家F.Leonhardt教授在美国P-K桥
I. INTRODUCTION LI Guo-hao, Tongji University Scientific research team commissioned by the Shanghai Municipal Science and Technology Commission, in order to meet the Shanghai Municipal Engineering Design Institute of the Shanghai Huangpu River Bridge prestressed concrete oblique slab main program, carried out a comparison beam slant bridge program Feasibility Study [1] (Figure 1). The program with the combination of beam deck, radioactive densely arranged, flexible reinforced concrete pylons and suspension as the basic structural features. It has comprehensively absorbed the advanced experience of constructing long-span diagonal tension bridges abroad in the past decade. D · AFirmage, a bridge engineer from the United States, conducted an economic study on slant-tensioned bridges and found that it is most economically reasonable to have a cable and radiation-shaped cable. Professor F. Leonhardt, a famous bridge expert in West Germany, is on the P-K Bridge in the United States