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一、概述 空心桥墩是高墩常用的墩型之一。在成昆及湘黔(大土至贵定段)两干线上,已建成的钢筋混凝土(混凝土)空心墩,墩高在30米以上的共44个(其中一个是混凝土空心墩),其中最高的钢筋混凝土空心墩达68.2米,混凝土空心墩为50.6米。一般高50米左右的钢筋混凝土空心墩,比同等高的实体墩节省圬工1/3左右,混凝土空心墩比同等高的实体墩节约圬工1/4～1/5左右。墩的高度愈大,空心墩节省圬工愈显著。
First, an overview Hollow piers pier is one of the commonly used piers. On the two main lines of Chengkun and Xiangqian (from Dadu to Guiding), there are 44 reinforced hollow concrete piers (concrete hollow piers) with a total height of more than 30m (one of them is concrete hollow piers), of which the highest Of reinforced concrete hollow pier up to 68.2 meters, 50.5 meters of hollow concrete pier. Generally, the reinforced concrete hollow piers of about 50 meters in height save about 1/3 of the piers of the same height, and the concrete hollow piers save about 1/4 to 1/5 of the piers of the same height. The greater the height of the piers, the greater the saving of hollow piers.