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照片是某工程中的一座三孔十五米石拱桥。它采用的是小石子混凝土砌片石拱圈。用小石子混凝土代替沙浆的圬工砌体,是近年釆国内石拱桥施工中发展的一项先进经验。它的优点是:
Photo is a project in a three hole 15 meters stone arch bridge. It uses a small stone concrete lap stone arch ring. Stone mortar instead of mortar with small gravel concrete is an advanced experience in the development of domestic stone arch bridge in recent years. Its advantages are: