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半直立式圆筒护岸是一种新式港口工程结构,结合其在大连某水工护岸工程中的应用,进行了半直立式圆筒护岸地基的加载试验,通过实测土压力、沉降、水平位移及孔隙水压力,分析了半直立式圆筒护岸地基的沉降及水平位移变化特点,并进一步研究了其不均匀沉降的发展过程。试验结果表明:半直立式圆筒护岸沉降及水平位移对护岸荷载分级、每级荷载加载量、加载历时及两级荷载之间的间隔时间较为敏感,其中护岸后方最后一级不对称加载对圆筒结构的不均匀沉降影响最大,孔隙水压力变化主要受每级加载量、加载历时及潮汐作用影响,而圆筒安装及第一级荷载施加后,孔隙水压力产生较大的波动。
Semi-vertical cylindrical revetment is a new type of port engineering structure. Combined with its application in some water conservancy bank protection project in Dalian, the semi-vertical cylindrical revetment foundation loading test is carried out. Through the measurement of earth pressure, settlement, horizontal displacement and Pore water pressure, analyzed the characteristics of subsidence and horizontal displacement of semi-vertical cylindrical revetment foundation, and further studied the development process of its uneven settlement. The test results show that the settlement and horizontal displacement of semi-vertical cylindrical revetment are sensitive to the classification of bank revetment, the loading of each stage, the loading duration and the interval time between two stages of loading. In the last stage of bank revetment, The variation of pore water pressure is mainly affected by the loading of each stage, loading duration and tidal effect. However, the pore water pressure fluctuates greatly after the cylinder is installed and the first stage load is applied.