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目前,德国联邦铁路的汉诺威一维尔茨堡和曼海姆—斯图加特新干线的许多山谷桥正在设计和施工,与公路桥相比,这些桥的桥面自重和交通荷载较大,允许变形较小。此外,还要求特别注意线路与桥梁的相互作用引起的应力。桥梁体系必须适应这种铁路特有的条件。下部结构刚度的计算具有特别重要的意义,因为桥梁变形会影响行车特性,并在钢轨内引起不允许的高应力。这需要地基专家与设计工程师密切合作,给出了平基础和桩基础的变形计算方法,并对垂直桩和斜桩体系的变形特性进行了比较。避免工程缺陷,是所有建设者的共同目标。揭示了维修费用居高不下的原因并提出了在施工设计和施工过程中进行改进的可能性。
At present, many of the valley bridges of the German Federal Railways Hannover-Würzburg and the Mannheim-Stuttgart Shinkansen are being designed and constructed. Compared with road bridges, the bridge decks and heavy traffic loads allow for less deformation . In addition, special attention is also required to the stress caused by the interaction of the line with the bridge. The bridge system must adapt to the unique conditions of this railway. The calculation of the stiffness of the substructure is of particular importance because the deformation of the bridge can affect the driving behavior and cause impermissible high stresses in the rail. This requires close cooperation between the foundation expert and the design engineer. The calculation method for the deformation of the foundation and pile foundation is given. The deformation characteristics of vertical and oblique pile systems are also compared. Avoiding engineering defects is a common goal for all builders. Revealed the reasons for the high maintenance costs and proposed the possibility of improvement in the process of construction design and construction.