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Deep excavation construction by top-down method in Zagreb

机译：萨格勒布自上而下的深基坑施工

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In the old centra] pan of Zagreb, among a block of buildings, a business facility is being built. The underground structure consists of 5 belowground floors, with maximum excavation depth of around 19 in. For construction of belowground floors the so-called "top - down" method is used. This method is useful to avoid long-term work on the construction of geotechnical anchors and tampering of nearby parcels. Excavation support is ensured by a 24.5 m long reinforced concrete diaphragm wall held by floor slabs of the underground levels. The reinforced concrete diaphragm wall is designed as a permanent structure and presents a vertical cap wall of the underground part of the building. Floor slabs are retained with steel columns, which are founded on drilled shafts Ø120 cm, 12 and 15 m of length.
机译：在萨格勒布（Zagreb）的老中部平底锅中，一幢建筑物之中，正在兴建商务设施。地下结构由5个地下层组成，最大挖掘深度约为19英寸。对于地下层的构造，使用了所谓的“自顶向下”方法。此方法有助于避免长期从事岩土锚的施工和附近地块的篡改。开挖支撑由地下楼层的楼板支撑的24.5 m长的钢筋混凝土隔板墙来确保。钢筋混凝土隔膜墙被设计为永久性结构，并呈现出建筑物地下部分的垂直盖墙。楼板用钢柱固定，钢柱以直径Ø120cm，长度12和15 m的钻孔轴为基础。

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