建材技术与应用
建材技術與應用
건재기술여응용
RESEARCH & APPLICATION OF BUILDING MATERIALS
2014年
5期
8-10
,共3页
复合地基%刚柔多元桩%ABAQUS%桩身应力%变形规律
複閤地基%剛柔多元樁%ABAQUS%樁身應力%變形規律
복합지기%강유다원장%ABAQUS%장신응력%변형규률
composite foundation%rigid-flexible multi-pile%ABAQUS%pile body stress%deformation law
采用有限元软件ABAQUS模拟刚柔多元桩复合地基，得出其桩顶、桩身应力特点和变形规律。刚性桩承担的荷载明显大于柔性桩承担的荷载；对于同种桩型，角桩的应力最大，边桩次之，中桩最小；沿桩身应力最大部位不在桩顶，而是位于桩身的某一位置；复合地基的变形规律与承载力规律恰好相反，桩顶处变形最大，并且群桩中心处变形最大，边桩次之，角桩最小。
採用有限元軟件ABAQUS模擬剛柔多元樁複閤地基，得齣其樁頂、樁身應力特點和變形規律。剛性樁承擔的荷載明顯大于柔性樁承擔的荷載；對于同種樁型，角樁的應力最大，邊樁次之，中樁最小；沿樁身應力最大部位不在樁頂，而是位于樁身的某一位置；複閤地基的變形規律與承載力規律恰好相反，樁頂處變形最大，併且群樁中心處變形最大，邊樁次之，角樁最小。
채용유한원연건ABAQUS모의강유다원장복합지기，득출기장정、장신응력특점화변형규률。강성장승담적하재명현대우유성장승담적하재；대우동충장형，각장적응력최대，변장차지，중장최소；연장신응력최대부위불재장정，이시위우장신적모일위치；복합지기적변형규률여승재력규률흡호상반，장정처변형최대，병차군장중심처변형최대，변장차지，각장최소。
The present research imitates the bearing behavior of rigid - flexible multi - pile composite foundation using finite element software ABAQUS and obtains the pile body stress characteristics and deformation law. The load of rigid pile is obviously bigger than that of the flexible pile. As for the same type pile,stress of angle pile is the largest,stress of side pile is smaller,and stress of center pile is the smallest. The biggest pile body stress is not at the top of piles,but in a certain position of them. Laws of deformation and bearing capacity of composite foundation are opposite:the deformation of pile top is largest,the deformation of pile group center is the largest,that of the side pile is smaller,and that of the angle pile is the smallest.
