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近几年来,云南省禄丰县兴建的水库中有混凝土拱坝1座,混凝土及浆砌石混合拱坝5座。拱坝常建于峡谷等地形、地貌复杂的地段,因此拱坝在施工中的拱圈放样就比较困难。拱圈的放样,主要是把设计好的拱圈弧线标定在地面上,以便于拱石的安装或混凝土的浇筑,拱坝形状比较复杂,拱圈的放样方法也多种多样。 1.直接画圆法 坝高较低的等厚圆拱,如果地形条件允许,可用直接画圆法放样。事
In recent years, there are 1 concrete arch dam and 5 mixed concrete and masonry dams in the reservoir built in Lufeng County of Yunnan Province. Arch dam is often built in canyons and other terrain, the location of complex terrain, arch dam arch in the construction of the more difficult. The lofting of the arch ring is mainly to calibrate the arc of the designed arch ring on the ground so as to facilitate the installation of the arch stone or the pouring of the concrete. The shape of the arch dam is rather complicated, and the setting method of the arch ring is also varied. 1. Draw a circular dam directly lower height of the arch of equal thickness, if the topography allows, you can draw a straight circle method of lofting. thing