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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。
The results of geotechnical exploration and design of two retaining structures at the port of Los Angeles, California, were introduced. In order to provide two barge stops at the pier, excavation of the existing dyke slope is required. The excavated slope needs There support structure support. According to the site investigation and laboratory test data, the project foundation is sand, muddy sand and clay. The site is at the operational earthquake level (magnitude 5.5, peak acceleration 0.28g) and sporadic earthquake level (magnitude 6.5, peak acceleration 0.52g) Liquefaction will occur. It is suggested that the steel plate piles combined with AZ-type central pile and AZ-type auxiliary pile should be adopted in the retaining structure and the pile length and section size should be determined by the lateral pressure distribution diagram and the limit equilibrium method under the action of static and operating vibration levels.