CAJ | 학술논문

介绍了美国加州洛杉矶港口停靠设施两种支挡结构的岩土工程勘探和设计成果,为了在码头提供两个驳船停靠点,要对现有堤坝边坡进行开挖,开挖后的边坡需要有支挡结构支撑.根据现场勘察和室内试验数据,项目地基为砂、泥质砂和黏土层,场地在运行地震水平下(震级5.5,峰值加速度0.28g)和偶发性地震水平下(震级6.5,峰值加速度0.52g)将会发生液化现象.建议支挡结构采用AZ型中心桩和AZ型辅助桩结合的钢板桩,并采用静力和运行震动水平共同作用下的侧压力分布图和极限平衡法分析确定桩长和截面尺寸.
개소료미국가주락삼기항구정고설시량충지당결구적암토공정감탐화설계성과,위료재마두제공량개박선정고점,요대현유제패변파진행개알,개알후적변파수요유지당결구지탱.근거현장감찰화실내시험수거,항목지기위사、니질사화점토층,장지재운행지진수평하(진급5.5,봉치가속도0.28g)화우발성지진수평하(진급6.5,봉치가속도0.52g)장회발생액화현상.건의지당결구채용AZ형중심장화AZ형보조장결합적강판장,병채용정력화운행진동수평공동작용하적측압력분포도화겁한평형법분석학정장장화절면척촌.
This paper presents results of a geotechnical investigation for two proposed retaining structures at a berth facility in the Port of Los Angeles,California,U.S.A.These retaining structures are needed for excavation of the existing dike slope to accommodate two Islander Barges.Based on the data obtained from a field exploration and laboratory testing program,the project site is underlain by sands and silty sands interbedded with silts and clay layers.The site is liquefiable under both the Operating Level Earthquake(0LE)event(a Magnitude 5.5 event with a peak acceleration of 0.28g)and the Contingency Level Earthquakes(CLE) event (a Magnitude 6.5 event with a peak acceleration of 0.52g).The retaining structures were proposed to consist of steel sheet piles with a combination of AZ-king piles and AZ-intermediary piles.Using the lateral pressure diagrams under both the static and OLE conditions,limit equilibrium analyses were performed to provide recommendations on the pile lengths and section sizes.