摘要
采用四点弯曲装置，分别对全冻土及冻土与混凝土界面进行了ＫⅠＣ的实验测定，考虑了温度、水含量及加载速率对断裂韧度ＫⅠＣ的影响．全冻土与界面的ＫⅠＣ随温度和水含量的变化具有相似的规律，即随温度降低成线性增大；随水含量增加成非线性增大；在本实验范围内。
This paper presents experimental results of fracture toughness, for both pure forzen soil and the interface between frozen soil and concrete. A 4 point bending device is employed in the experiment. The effects of temperature, water content and loading rate on fracture toughness K ⅠⅠC are taken into account. In authors' opinion, the relation of K ⅠⅠC versus to temperature and water content of pure frozen soil is similiar to that of interface between frozen soil and concrete. Result is that K ⅠⅠC linearly increases with the decrease of temperature and unlinearly increases with the increase of water content. Loading rate has no effect on experimental results under the given experiment conditions.
出处
《大连理工大学学报》
EI
CAS
CSCD
北大核心
1997年第1期20-23,共4页
Journal of Dalian University of Technology
基金
国家自然科学基金
关键词
冻土
断裂韧度
断裂力学
界面
混凝土
frozen soils
fracture toughness
fracture mechanics
interfaces
