摘要
采用模型试验研究预应力加筋路堤的静力力学性能.路堤模型尺寸为1500mm×780 mm×1750 mm,模型路堤填料为中砂,加筋材料为碳纤维增强塑料(CFRP).设计了2种试验工况,分别研究在竖向荷载作用下中砂路堤模型的竖向位移、侧向位移及侧向应力分布,并比较加筋土路堤与预应力加筋土路堤的力学性能.试验表明,这种预应力加筋土结构可以提高加筋土结构的承载力,并可以明显减少加筋土结构的竖向、侧向变形.
A model test was conducted to study the mechanical properties of reinforced embankment with prestress. The size of the embankment model was 1 500 mm × 7 80 mm × 1 750 mm, in which medium sand was the filling and carbon fabrics reinforced plastics （CFRP） was the material to be reinforced. Two subcases were designed to study the vertical displacement, lateral displacement and lateral-stress distribution of the embankment model under the action of vertical load. In addition, the mechanical properties of the reinforced structures with and without prestress were compared. The result has shown that the application of prestress on the reinforced structure can dramatically improve the carrying capacity of the structure and reduce its vertical and lateral deformation.
出处
《湖南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2008年第2期27-30,共4页
Journal of Hunan University:Natural Sciences
基金
国家自然科学基金资助项目(50578062)
国家安全生产监督管理总局安全生产科技发展计划项目(07-207)
湖南省科技计划项目(2007RS4009)
湖南省科技计划重点项目(06SK4057)
关键词
预应力
加筋土
路堤
模型设计
prestress
reinforced earth
embankment
model design
作者简介
杜运兴（1971-），男，河南平顶山人，湖南大学副教授，博士十通讯联系人，E-mail：duyunxing@yahoo．com．cn
