Szukana fraza: [Abstrakt = "For about 25 years China has been developing high speed railway transport, so called high speed rail \(HSR\). The idea of building completely new tracks and stations has been adopted. In 2007 a new standard for design of HSR was introduced in China. The standard is, in general, compliant with PN\-EN standard rules for bridge design. However it applies to bridge carrying railway traffic at 250 km\/h and 350 km\/h velocity. Serviceability limit states are expressed as in the PN\-EN standard. There are also same differences, for instance\: load values of load model LM71. A system of small span bridge structures has been worked out for the HSR in China. It is based on prestressed concrete spans, mainly simply supported. Requirements for bridge structures in China are coincident with those included in the PN\-EN standards."]

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