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予应力混凝土 T 型刚构公路桥,近些年来,国内修建甚多。这种结构,对于修建大跨径钢筋混凝土桥梁,是较合理的型式之一。我省修建予应力混凝土 T 型刚构桥,首建于1965年的(?)山桥,跨径70米,沉井基础空心墩;再建于福州市的闽江桥,跨径48米,灌注桩基础混凝土墩;又于1971年再建乌龙江桥,跨径144米,管柱基础空心墩。为进一步探讨予应力混凝土 T 型刚构桥在实际运营中的效能,对乌龙江桥进行了定期观测。现将观测过程实绩介绍如下:
Prestressed concrete T-type rigid-frame highway bridge, in recent years, many domestic construction. This structure, for the construction of large-span reinforced concrete bridges, is one of the more reasonable type. Construction of T-type rigid frame bridge to the stress concrete in our province was first built in 1965 (?) Mountain Bridge with a span of 70 meters and a hollow base of the caisson. It was built in Minjiang Bridge of Fuzhou City with a span of 48 meters and was filled with Pile foundation concrete pier; and in 1971 to rebuild Wulong River Bridge, spanning 144 meters, hollow column pier foundation. In order to further investigate the effectiveness of prestressed concrete T-type rigid frame bridge in operation, regular observation was made on Wulong River Bridge. Now the observation process results are as follows: