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一、引言在无产阶级文化大革命和批林批孔运动的推动下,三年多来,“桥梁墩台制动力实验”的科研任务,在各级党委的直接领导与路内外各兄弟单位的大力支持协作下,我们对不同桥长、不同墩高的七座预应力钢筋混凝土梁桥进行了现场动载实验,积累了数以万计的实测数据。通过对这资料的分析和研讨,使我们对桥墩台承受的纵向水平力,在力素与概念方面有了新的认识与了解;在规律性方面也逐步加深和提高了认识。现将我们通过实验所取得的几点主要认识、和基于这认识而提高的桥墩设计活载计算图式、以及根据此项新的活载计算图式设计桥墩的经济效果,简要介绍如下。
I. INTRODUCTION Under the impetus of the Great Proletarian Cultural Revolution and the campaign to criticize the proletarian and proletarian movements, the scientific research task of “Braking Experiments on Bridge Pier and Dock” under the motto of the proletarian cultural revolution and the pro-Lin movement approved the direct leadership of the party committees at all levels and the vigorous efforts of various fraternal units With the support of cooperation, we carried out on-site dynamic test of seven prestressed reinforced concrete girder bridges with different bridge lengths and piers height, and accumulated tens of thousands of measured data. Through the analysis and discussion of this data, we have made a new understanding and understanding of the vertical horizontal force that the piers and piers are subjected to. They have also deepened and raised their awareness on regularity. Now let us through the experiment to obtain some of the main understanding, and based on this understanding to improve the piers design live load calculation diagram, and according to this new live load calculation diagram design piers economic effects are briefly described below.