波浪作用下软土地基半圆型防波堤稳定性模型实验研究  

Research on stability of semi-circular breakwater in soft soil foundation under wave load based on physical model experiment method

作　　者：孙百顺[1,2] 孟祥玮[2] 戈龙仔[2] 刘针[2] SUN Baishun;MENG Xiangwei;GE Longzai;LIU Zhen(State Key Laboratory of Hydraulic Engineering Simulation and Safety,Tianjin University,Tianjin 300072,China;Tianjin Research Institute for Water Transport Engineering,National Engineering Laboratory for Port Hydraulic Construction Technology, Tianjin 300456,China)

机构地区：[1]天津大学水利工程仿真与安全国家重点实验室,天津300072 [2]交通运输部天津水运工程科学研究所港口水工建筑技术国家工程实验室,天津300456

出　　处：《地震工程与工程振动》2018年第1期97-107,共11页Earthquake Engineering and Engineering Dynamics

基　　金：交通运输部建设科技项目(2013328224070)~~

摘　　要：在长456 m、宽5 m、深8~12 m的实验水槽建立了模型与原型比尺为1∶5的模拟波浪—半圆型防波堤结构—软土地基实际工作状态的物理模型实验系统,开展了设计高低水位、不同波高和波浪作用循环次数作用下半圆型防波堤结构稳定性实验研究。通过对实验测试数据分析,得出半圆型防波堤软土地基孔隙水压力的变化规律,孔隙水压力发展趋势分为四种类型。从结构安全不利角度选取增长型曲线进行数据拟合,得到半圆型防波堤下软土地基对数型的最大孔隙水压力发展模型。The physical model experimental system simulating the actual working state of wave-semi-circular breakwater-soft soil foundation is established with model and prototype 1: 5 in the experimental flume with length of 456 m,width of 5 m and depth of 8 ~ 12 m. The structural stability of semi-circular breakwater under the design of high and low water level,different wave heights and wave action cycles is studied. Based on the experimental data,the variation law of pore water pressure on the soft soil foundation of semi-circular breakwater is analyzed,and the development trend of pore water pressure is divided into four types. The logarithmic maximum pore water pressure development model of soft soil foundation under semi-circular breakwater is obtained from the growth curve of pore water pressure for structural safety.

关 键 词：软土地基 半圆型防波堤 大比尺模型实验 孔隙水压力 

分 类 号：U656.2[交通运输工程—港口、海岸及近海工程]