基于FLAC3D的加筋路堤地震响应分析  

SEISMIC RESPONSE ANALYSIS OF REINFORCED EMBANKMENT BASED ON FLAC3D

作　　者：段臣臣 刘欣 姬鹏越 段圣允 段劲松 DUAN Chenchen;LIU Xin;jI Pengyue;DUAN Shengyun;DUAN Jinsong(College of construction engineering,Heilongjiang University of science and technology,Harbin 150022;College of civil engineering,Nanjing Forestry University,Nanjing 210037;China Nuclear Industry Fifth Construction Co.,Ltd.,Guangdong Chaozhou 201500;Shenyang Guiju Construction Engineering Co.,Ltd.,Shenyang 110020;Jiangsu Jiuding Jiahe Engineering Design Consulting Co.,Ltd.,Jiangsu Xuzhou 221009)

机构地区：[1]黑龙江科技大学建筑工程学院,哈尔滨150022 [2]南京林业大学土木工程学院,南京210037 [3]中国核工业第五建设有限公司,广东潮州201500 [4]沈阳贵聚建设工程有限公司,沈阳110020 [5]江苏久鼎嘉和工程设计咨询有限公司,江苏徐州221009

出　　处：《低温建筑技术》2020年第7期77-79,100,共4页Low Temperature Architecture Technology

摘　　要：文中采用有限元差分软件FLAC3D从加筋路堤的水平向峰值速度、水平峰值土压力两个角度,研究双向土工格栅和三向土工格栅在不同地震烈度作用下的动力性能。结果发现:地震烈度为7度时,双向格栅加筋土路堤的水平向峰值速度随着监测点高程的增加而增大,水平向峰值土压力随着监测点高程的增加而减小;同一高程处,三向土工格栅加筋路堤的水平向峰值速度和土压力比双向格栅加筋土路堤小很多。当地震烈度增大到8度时,三向格栅加筋路堤比双向格栅加筋路堤的上述现象更加明显,动力性能优于二向土工格栅。In this paper,the dynamic performance of two-way geogrid and three-way geogrid under different seismic intensity is studied by using the finite element difference software FLAC3D from the two aspects of horizontal peak velocity and horizontal peak earth pressure of reinforced embankment.The results show that:when the seismic intensity is 7 degrees,the horizontal peak velocity and the horizontal peak earth pressure of the two-way geogrid reinforced embankment increase with the elevation of the monitoring point,and decrease with the elevation of the monitoring point;at the same elevation,the horizontal peak velocity and the earth pressure of the three-way geogrid reinforced embankment are much smaller than that of the two-way geogrid reinforced embankment.When the seismic intensity increases to 8 degrees,the above phenomenon of three-way grid reinforced embankment is more obvious than that of two-way grid reinforced embankment,and the dynamic performance is better than that of two-way geogrid.

关 键 词：FLAC3D 地震响应 加筋土路堤 速度 土压力 

分 类 号：TU311.3[建筑科学—结构工程]