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利用竹材修建桥梁,目前在国内外还是一个新的课题,也是就地取材修桥技术革新方向之一。南昌公路运输局1958年在改建上(高)宜(丯)铜(鼓)线珠兰坳桥时,将其中一孔试用竹材作面板,借以了解一些有关竹材的发裂、腐圬、虫蛀等问题,为今后进一步研究修建简支梁竹桥及竹桁架桥作一些准备。经初步计算,这一孔桥面可节省木料2.20公方,节约面板材料费82％。这座桥已于六月份建成通车,情况很好,兹将修建情况简要说明如次: 一、设计标准珠兰坳桥为2孔5.50公尺全长11.80公尺的石台木架水面桥,上部结构载重标准为汽-8级,采用原省公路局1954年桥梁标准图施工。由于条件限制,不能将使用的竹材作力学性能的试验,因此在作强度计算时,是以
The use of bamboo to build bridges is still a new subject both at home and abroad and one of the technical innovations in the field. Nanchang Road Transport Bureau in 1958 in the transformation of (high) should (丯) copper (drums) Line Bridge Depression, one of the holes of bamboo as a test panel, to understand some of the bamboo hair cracking, rotting, moth-eaten And other issues for the future to further study the construction of simple bamboo bridge and bamboo truss bridge for some preparation. After preliminary calculation, this bridge deck can save 2.20 square lumber, save 82% panel material costs. The bridge was opened to traffic in June in good condition, the construction will be briefly described as follows: First, the design standard for the second floor of the Pearl Bridge Au Depression 5.50 meters length 11.80 meters Shitai wooden surface water bridge, The superstructure load standard for vapor -8, using the original Highway Bureau 1954 bridge standard construction. Due to the conditions, can not be used as mechanical properties of bamboo test, so in the calculation of strength, so