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河南省南阳专区先后在通航的河流上,用简易办法修建了三个可开启的活动木桥,通车一年以来,使用情况良好。兹以白河大桥为例,介绍如下。一般概况白河大桥是低水位漫水木桥,全长有二百余米,高有1.3米左右,按汽—10级载重设计,上部构造为净—4的简单梁式木桥。东岸的第4孔为1957年10月用东北红松修建的活动木桥面,第5孔此其他邻孔跨径大一些,净跨为6米,采用迭梁;同时底梁在靠近活动木桥面一端伸出帽木处40公分,供支承活动木桥面大梁之用(如图1)。
Nanyang Prefecture in Henan Province has a navigable river, with easy way to build three openable activities wooden bridge, opened to traffic a year, the use of good. Here is a case of Baihe Bridge, introduced below. General Profile The Baihe River Bridge is a low-water-flooded wooden bridge with a total length of 200 meters and a height of 1.3 meters. According to the steam-10 load design, the upper structure is a net-4 simple beam-type wooden bridge. The 4th hole on the east coast is the activity wooden deck constructed with the northeast Korean pine in October 1957. The other 5 holes are larger in spanning diameter of 6 meters with a net span of 6 meters, One end of the wooden deck extends over 40 cm of the wooden cap to support the movable wooden deck girder (Figure 1).