真三轴静载作用下混凝土的动态力学性能研究

徐松林,王鹏飞,单俊芳,张鸣,周李姜

振动与冲击 ›› 2018, Vol. 37 ›› Issue (15) : 59-67.

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振动与冲击 ›› 2018, Vol. 37 ›› Issue (15) : 59-67.
论文

真三轴静载作用下混凝土的动态力学性能研究

  • 徐松林,王鹏飞,单俊芳,张鸣,周李姜
作者信息 +

Dynamic behavior of concrete under static tri-axial loadings

  • XU Songlin, WANG Pengfei, SHAN Junfang, ZHANG Ming, ZHOU Lijiang
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文章历史 +

摘要

研制了一种真三轴静载作用下混凝土、岩石动态实验系统。该系统采用液压伺服控制系统可对试件施加三向独立的100MPa静载、采用霍普金森杆(SHPB)冲击加载可对试件施加1GPa以下的冲击动载;同时,立方体试件六个面的动态信号可由六根杆上的应变片记录。由此,研究了C30混凝土材料在不同的真三轴静载条件下的动态压缩性能,得到了三向独立的动态应力应变关系、动态体积应变、动态Drucker-Prager强度参数等。尼龙和花岗岩试件作为对比材料,进行了初步探讨。

Abstract

A dynamic testing system for concrete and rock under static triaxial loading was developed. The hydraulic servo control system used in the testing system provides tri-axial independent pressures up to 100MPa, and SHPB devices were used to provide an impact load lower than 1GPa on specimens. The dynamic signals on six faces of a cube specimen were recorded with strain gauges on six SHPB bars attached to the cube specimen. The dynamic compressive behaviors of C30 concrete material under different static tri-axial loadings were investigated, and tri-direction independent dynamic stress-strain relations, dynamic volumetric strains, and dynamic Drucker-Prager strength parameters were obtained. For the purpose of comparison, the dynamic compressive behaviors of Nylon and Fujian granite were also investigated.
 

关键词

材料动力学 / 真三轴静载 / Hopkinson压杆(SHPB) / 混凝土 / 加载路径效应

Key words

 material dynamics / static tri-axial loadings / split Hopkinson pressure bar (SHPB) / concrete / loading path effect

引用本文

导出引用
徐松林,王鹏飞,单俊芳,张鸣,周李姜. 真三轴静载作用下混凝土的动态力学性能研究[J]. 振动与冲击, 2018, 37(15): 59-67
XU Songlin, WANG Pengfei, SHAN Junfang, ZHANG Ming, ZHOU Lijiang. Dynamic behavior of concrete under static tri-axial loadings[J]. Journal of Vibration and Shock, 2018, 37(15): 59-67

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