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一、前言当列车通过时,桥梁要产生竖向及横向振动。对于竖向振动,近年来随着高速铁路的发展,日本、西欧以及美国已进行了不少理论分析研究,然而,对于横向振动的研究进行得比较少。这是由于下列两方面的原因:一是一般中小跨度桥梁由于车辆界限净空(下承
First, the preface When the train passes, the bridge should produce vertical and horizontal vibration. In the recent years, with the development of high-speed railway in Japan, Western Europe and the United States, many theoretical analyzes have been carried out. However, studies on transverse vibration are relatively rare. This is due to the following two reasons: First, the general small span of the bridge due to vehicle clearance (under the