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固镇桥位于津浦线固镇车站附近的干线上,全桥有钢梁和10米跨度的普通钢筋混凝土梁,仅在天津端有1孔12米跨度的粗钢筋先张法预应力混凝土T形试验梁,位于直线上,采用有碴桥面,于1968年设计,1969年架设,为我国第1孔粗钢筋先张法预应力混凝土铁路桥梁。一、设计依据 1967年,专业设计院接受铁道部援外桥梁的设计任务,经过调查研究,决定对小跨度梁采用预应力混凝土结构。为使援外桥梁采用先进的材料和工艺,我们选用粗钢筋先张法预应力混凝土
Guzhen Bridge is located near the Jinpu Line Guzhen station on the main line, the full bridge with steel beams and 10 meters span of ordinary reinforced concrete beams, only in Tianjin side of a hole 12 meters span of crude steel pretensioned prestressed concrete T-shaped Test beam, located in a straight line, with ballast deck, designed in 1968, erected in 1969, is China’s first hole pre-tensioned prestressed concrete railway bridge. First, the design basis 1967, professional design institutes to accept the Ministry of Railways foreign aid bridge design task, after investigation and study, decided to use prestressed concrete structures for small-span beams. In order to use foreign advanced bridge materials and technology, we use the first prestressed concrete reinforcement prestressed concrete