大梁支座
纵向大梁必须置于柱子[或墙墩/桥墩]之上,这些柱子承载大梁载荷的推力.专门制作了水泥混凝土承重块,为的是使大梁的末端置于适当的承座上,以使大梁的载荷均匀分布在其安置的结构上.由于纵向大梁在严寒热与酷热时的膨胀和收缩,桥礅（或桥基）两端备有辊子/滚柱以允许其运动而不致使大梁变形/弯曲.
英语翻译Bearings for the Girders The longitudinal giders have to
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