双曲拱桥(国外英文资料).docVIP

双曲拱桥(国外英文资料) Double curved arch bridge Two-way curved arch bridge] refers to an arch bridge consisting of longitudinal arch ribs and transverse arch waves. A new type of arch bridge created by bridge workers in Wuxi County of Jiangsu Province in 1964. The arch of his arch consists of arch ribs, arches, arches and transverse linkages. The shape of the arch is curved in two directions, called the hyperbolic arch. The main arch forms include single wave, multi wave, multi wave, high and low rib, etc.. The section of the arch rib has a rectangular shape, an inverted T shape, a I shape, a L shape, a thin-wall box shape, etc.. The double curved arch bridge belongs to the through type arch bridge in the position of its lane. If viewed from the cross section of the main arch, it consists of arch ribs, arches, arches and transverse linkages. Because the arch wave between the arch ribs is curvilinear and orthogonal to the curve of the main arch ring, it is called a hyperbolic arch bridge. This bridge is a bridge in 1960s in Jiangsu Province, Wuxi County, first built by the workers, it gives full play to the advantages of prefabrication, can not save the wood frame construction, accelerate the construction progress, and the consumption quantity and not much. A hyperbolic arch can bear a greater load than a single arch, mainly because the arch is arched not only in one direction but also in the other direction perpendicular to it. The fender of the bike is this kind of hyperbolic arch. When it is in force, force transfer more evenly along the two arch direction; a local force is too large, can quickly adjust the balance of hyperbolic arch, the double arch not due to excessive local stress and damage. In addition to building bridges, arch arches are another important use for building dams. Especially the hyperbolic arch dam, the arched roof by water pressure can be evenly transferred to the bank through the arch, sturdy on both sides to maintain stability, compared with gravity