论文部分内容阅读
近几年来,我县水利桥梁建设形式多以桁架拱桥为主。特别是农村公路桥,采用三角形拱桁架、三米混凝土微弯板和二侧飞燕式悬半波的钢筋混凝土桁架拱桥,具有结构合理,造型美观,经济实用等特点,在节约材料、降低造价、加快施工速度等方面都取得了明显的经济效果。以仓浦桥为例,该桥是1979年冬建成的三孔桁架拱农村公路桥,总净跨92米,总长97.7米,净宽4.5米,总宽5.3米。该桥共用水泥146吨,钢材14.5吨,总造价5.99万元,每平方米造价115.6元,比同类型未改进的桁架拱桥节约水泥25 %、钢材33%、资金
In recent years, the construction of water conservancy bridges in our county mainly truss arch bridge. In particular, the rural road and bridge, the use of triangular arch trusses, three-meter concrete micro-bending plate and two sides of the Swallow half hanging waves of reinforced concrete truss arch bridge, with a reasonable structure, handsome in appearance, economical and practical features, saving materials and reduce costs , Speed up construction and other aspects have achieved significant economic results. Taking Cangpu Bridge as an example, the bridge is a three-hole truss-arch rural road bridge built in the winter of 1979 with a total net span of 92 meters, a total length of 97.7 meters, a net width of 4.5 meters and a total width of 5.3 meters. The bridge shares 146 tons of cement, 14.5 tons of steel, the total cost of 59,900 yuan, the cost of 115.6 yuan per square meter than the same type of truss arch bridge to save 25% of cement, steel 33% of the funds