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一、问题的提出大连港和尚岛港区煤码头1号墩沉箱基础,座落在地基为碎石及角砾层上,高程-13.50m。该层厚度为2.25m,其下为石灰岩,夹有溶沟。石灰岩高程-15.75m至-26.00m。溶沟中充填有软弱堆积物,见附图1。为了解决1号墩沉箱基础的地基应力和沉陷量,在结构上采用沿1号墩纵向安装8根20m长的钢筋混凝土基础板,断面尺寸b×h=2.0×1.2m。沉箱和基础板中间,用粒径1—4cm碎石找平,矿石层厚度20cm。基础板下是抛石基床,进行了分层
First, the issue put forward Dalian Port, Hong Kong Island Port Pier Pier No. 1 caisson foundations, is located in the foundation for gravel and breccia layer, elevation -13.50m. This layer has a thickness of 2.25 m, under which limestone is sandwiched. Limestone elevation -15.75m to -26.00m. Dissolved ditch filled with weak deposits, see Figure 1. In order to solve the foundation stress and settlement of caisson foundation of No. 1 pier, 8 20m long reinforced concrete foundation slabs along longitudinal pier No. 1 are adopted in the structure. The section size is b × h = 2.0 × 1.2m. Caisson and the middle of the base plate, with a gravel 1-4cm gravel, ore layer thickness 20cm. Under the base plate is a riprap bed, stratified