大跨度钢管混凝土拱桥拱肋线形操纵技巧(国外英文资料).docVIP

大跨度钢管混凝土拱桥拱肋线形控制技术(国外英文资料)Large span steel tube concrete arch bridge arch rib control technologyAuthor: fu chao??? Source: recommended by Internet users??? Number of hits: 34???? Update time: 2005-11-6????1, engineering overviewDrifting at jiuwanxi bridge belongs to the three gorges project supporting the project, located in the three gorges reservoir area zigui county, hubei province, total length of 221.5 m, the bridge for the net across 160 equal cross section catenary concrete-filled steel tube arch bridge bearing type, the main arch ring USES two d = 1.0 m pole, established to show the dumbbell shape, arch rib height of 2.4 m. F0 / L0 = 1/6, m = 1.495109, and the net vector height is 26.67 m. The structure of the arch is an assembly reinforced concrete hollow slab with a length of 12.66 m. The topography of the bridge is steep, cliff cliffs and no construction sites. The bridge is 216.77 m above the water level of the three gorges reservoir, which is 160m high, the bridge is in the tuyere, the wind is large and the wind can reach up to seven levels. The rocks of both sides of the strait are bare, and the rocks are well developed. Bridge main arch ring with two arch rib by horizontal, flat together as whole, arch rib center distance of 7 m, considering the bridge of the special terrain and the convenience of transportation, 15 segment of double rib arch rib is divided into integral hoisting, the heaviest section 26 t, the lightest of all disturbance paragraphs 12 t. The flange is connected by a flange with a flange.Bridge main construction method for: steel pipe processing in the factory, with 12 mmq235 steel plate and the Yangtze river to xiangxi wharf, then used car site, after half span single rib try spell and adjacent segment overall stereo spell, after using the cable hoisting system double rib cantilever. The concrete filling in the steel tube arch is pumped by the two sides of the two sides, the asymmetric method of the two sides, and the loading of the