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预应力钢筋混凝土桥梁跨越能力大,材料用量少。然而,由于结构和工艺的复杂性,在我国实际造价仍然十分昂贵。施工费用已接近材料费的情况表明,要改善其经济性必须从我国实际出发,简化构造、改革工艺和努力缩短工期。本文就常德沅水大桥方案设计中所做过的一些上部构造工艺设计来进行讨论,中心是探讨如何利用缆索吊装设备来修建大跨度预应力混凝土桥梁。由于没有直接实践,文内所述必有很多谬误,希望批评指正。
Prestressed reinforced concrete bridges over capacity, less material. However, due to the complexity of structure and technology, the actual cost in our country is still very expensive. The fact that the construction cost is close to the material cost shows that in order to improve its economy, we must proceed from the reality of our country, simplify construction, reform the process and strive to shorten the construction period. This paper discusses the design of some superstructures in the scheme design of Changde Yuanshui Bridge, and discusses how to build long-span prestressed concrete bridges with cable hoisting equipment. Since there is no direct practice, there must be many fallacies in the text, hoping to criticize and correct it.