竖向锚定板水平抗拔承载力三维力学模型分析  

Three-dimensional Mechanical Model Analysis on Horizontal Pullout Capacity of Vertical Anchor-plate

作　　者：张英[1] 胡伟[1] 姜守东[2] 

机构地区：[1]海南大学土木建筑工程学院,海南海口570228 [2]海南高速公路股份有限公司,海南海口570203

出　　处：《公路工程》2015年第2期74-79,共6页Highway Engineering

基　　金："十二五"国家科技支撑计划项目(2013BAK05B00);海南大学中西部学科重点领域建设项目(ZXBJH-XK011);海南省自然科学基金项目(513144)

摘　　要：竖向锚定板的水平抗拔承载力确定是锚定板档土结构设计中一个不可回避的关键问题,而当前有关这方面的理论研究还存在很多不足。在总结了当前有关竖向锚定板水平抗拔承载力研究的基础上,深入分析了竖向锚定板水平受拉时的三维力学机制,指出了当前理论研究中存在直接套用条形锚定板的平面应变模型用于矩形锚定板的三维问题、板前滑移线场假定具有主观性、未考虑板土接触面的真正力学特征对系统力学机制的影响这3方面的不足之处,论证了构建三维力学模型的必要性;并进一步就该问题三维力学模型的构建、板土接触面特性的考虑以及浅锚、深锚的统一指明了研究思路,为后续竖向锚定板抗拔承载力的深入理论研究奠定了基础。The ascertain of vertical anchor-plate＇s pullout capacity is an inevitable problem to the design of anchor-plate retaining wall,but there exit great shortages in the current theoretical research about this problem. Base on the summary of current research on the horizontal pullout capacity of vertical anchor-plate,the authors deeply analyzed the three-dimensional mechanical mechanism of vertical anchorplate under horizontal loading,and pointed out three shortcomings in the current theoretical research,which including the misuse of plane strain model on the rectangular anchor-plate,the subjectivity of the hypothesis of slip field before the plate,and non consideration of the effect of the real mechanical characteristic of the contact surface between soil and plate. The necessity of the building up of three-dimensional mechanical model was demonstrated,and the research approaches about the establishment of three-dimensional model,the consideration of the effect of the contact surface,and the unification of shallow and deep anchor-plates were further discussed,which lays the foundation for the intensive theoretical research on the pullout capacity of vertical anchor-plate in the future.

关 键 词：竖向锚定板 抗拔承载力 三维力学模型 滑移线场 接触面 

分 类 号：TU444[建筑科学—岩土工程]