土工基础

›› 2014, Vol. 28 ›› Issue (2): 142-144.

• 工程实录 • 上一篇    下一篇

隔震用碎石与混凝土接触面之抗滑试验研究

韩晓雷，魏 磊，王海刚，张冬冬   

  1. （西安建筑科技大学 土木工程学院，西安 710055）
  • 收稿日期:2013-04-02 出版日期:2014-04-21 发布日期:2014-04-25
  • 作者简介:韩晓雷（1957-），男，教授，博士，博导，主要从事探矿工程、黄土土性及黄土地区岩土工程问题、岩土工程动力问题的有限元及光面爆破机理。

Skid Test Study on Interface between Crushed Stone and Concrete

HAN Xiaolei, WEI Lei, WANG Haigang, ZHANG Dongdong   

  1. （School of Civil Engineering，Xian University of Architecture and Technology，Xian 710055）
  • Received:2013-04-02 Online:2014-04-21 Published:2014-04-25

摘要： 碎石垫层作为村镇低矮建筑基础下滑移隔震材料有着较大研究意义。为了研究单一粒径碎石与混凝土板间的摩擦滑移情况，采用自制大型单剪仪，在室内进行了不同竖向荷载下混凝土板与不同单一粒径碎石材料的水平抗滑试验。结果表明，不同粒径碎石与混凝土板摩擦呈现统一规律，即摩擦力先是逐渐增大，达到一定程度后趋于稳定。随着竖向荷载的增加，各粒径与混凝土板的摩擦力也逐渐增大，摩擦系数存在一个范围值，中八粒摩擦系数最小，小八粒最大，摩擦滑动效果也较稳定，适合作为碎石垫层材料性能的参考对象。

关键词: 碎石垫层, 单一粒径, 大型单剪仪, 滑动摩擦

Abstract: Using the crushed stone as a sliding isolation material for rural lowrise buildings has a research significance. The inhouse made large simple shear device is used for the studies of frictional behavior between single crushed stone grain and the concrete slab. The horizontal shear sliding tests are performed with various grain sizes and vertical loads. The results indicate that, similar frictional performance can be found between crushed stone with various grain sizes and the concrete slab. The frictional resistance increases and reaches a stable level after a threshold displacement values is reached. The frictional resistance increases with the vertical load for stone various grain sizes. The coefficients of friction for crushed stone with different grain size vary in a certain range. Compared with small and large grains, the medium grain crushed stone has a smallest coefficient of friction and is a potential suitable cushion material for the seismic isolation purposes.

Key words:  , Cushion；Single Grain Size；Largescale Simple Shear Apparatus；Sliding Friction