排架结构码头阶梯形岸坡桩土相互作用模型试验研究  

Model Test Study on Interaction between Piles and Soil of Frame Wharf Ladder Type Slope

作　　者：张钧堂 简富献 王鹏[2] 

机构地区：[1]重庆交通大学国家内河航道整治工程技术研究中心,重庆400074 [2]重庆交通大学水利水运工程教育部重点试验室,重庆400074

出　　处：《科学技术与工程》2016年第6期106-110,116,共6页Science Technology and Engineering

基　　金："十二五"国家科技支撑计划课题(2012BAB05B04)资助

摘　　要：为研究排架结构码头阶梯形岸坡桩土相互作用以及水位变化对桩土作用的影响,进行了大型模型试验模拟。根据试验数据,对排架结构桩周土体的侧向应力分布、排架桩身的受力特性以及水位变化的影响进行了讨论。结果表明:水平荷载作用下,排架各桩桩周土体侧向应力分布相似,呈三角形分布。桩周土体侧向应力随荷载的增加而增大;排架结构对岸坡有遮帘效应,起到一定的抗滑作用;排架桩身弯矩值随荷载的增加逐渐增大,桩身弯矩的大小与桩所处的位置有很大关系;水位越高,桩周土体侧向应力越大,桩身弯矩也越大,码头整体稳定性越差。For study the interaction between piles and soil of frame wharf ladder type slope and the effect of wa- ter level changes for pile-soil interaction, the large scale model test is used to simulate. According to the experimental data, the lateral stress distribution in the soil around the pile, the stress characteristics and the influence of the variation of the water level are discussed. It is revealed that the lateral stress distribution in the soil around the pile is similar and a triangular distribution. The lateral stress increases with the increase of load. The frame of the slop of has blind effect and plays a anti-slip role . The moment of the pile increases gradually with the increase of the load and the moment of the pile is related to the position of the pile. The higher the water level is, the larger the lateral stress is and the greater the moment of the pile is. So the whole stability of the pier is worse.

关 键 词：桩土相互作用 排架 水位变化 模型试验 

分 类 号：U656.1[交通运输工程—港口、海岸及近海工程]