摘要
为探讨锚固材料在高温下的锚固性能,采用理论分析、结构计算及实验相结合的方法,在着重解决温度可控、操作安全及结构合理等问题的基础上,设计并制作了一种实验过程安全便捷、客观真实的高温锚固同步实验机械装置。通过对树脂锚固材料的高温锚固实验表明:20~250℃范围,随着温度升高,锚固力增大到峰值70.9kN;250~350℃,锚固力下降为49.7kN;350~400℃期间,随着锚固材料的热解炭化,平均锚固力下降为14.6kN;500~600℃时锚固力完全丧失。该实验结果较客观地反映了高温下锚固材料的锚固力学性能,为锚固材料的实验研究提供依据。
Anchoring materials are widely used in Geotechnical reinforcement,but the mechanical characteristics of the anchorage will be changed greatly at high temperature.High temperature anchoring experiment is the main method to study the high temperature mechanical properties of anchoring materials.Using theoretical analysis,structural calculation and experimental application,and on the basis of solving the problems of adjustable temperature,safe operation and reasonable structure,this paper designed a test device with safe and convenient operation and synchronous measurement of anchoring force at high temperature.The mechanical test at high temperature of the resin anchoring material was carried out.The results show that:at 20~250 ℃,anchoring force increases to a peak 70.9kN as the temperature rises;at 250~350 ℃ anchoring force drops to 49.7kN;at 350~400 ℃,the average anchoring force drops to 14.6kN;with the pyrolysis and charring of the anchoring material,the anchoring force completely disappears at 500~600℃.The test data objectively reflect the high temperature mechanical properties of the anchoring material.
出处
《太原理工大学学报》
CAS
北大核心
2016年第3期309-313,共5页
Journal of Taiyuan University of Technology
基金
山西省自然科学基金资助项目:特厚煤层巷道高预应力锚固体结构特征研究(2015011066)
关键词
锚固材料
高温锚固力学特性
实验机械装置
锚固实验
anchoring material
temperature anchoring mechanical properties
mechanical device
anchorage test
