Experimental research on dynamic response of red sandstone soil under impact loads

Tong Wang, Zhanping Song, Jianyong Yang, Junbao Wang and Xuegang Zhang

Abstract

The cycling impact test of red sandstone soil under different axial pressure and different impact loads are conducted to reveal the mechanical properties and energy consumption mechanism of red sandstone soil with static-dynamic coupling loading. The results show that: Under the action of different axial pressure and different impact loads, the peak stress of the specimen increases, and then tends to be stable with the times of impact. With the increase of impact times, the specific energy absorption value of the red sandstone soil specimen is increased first and then gentle development trend. When the impact loads are certain, the larger the axial pressure is, the smaller the peak value of energy absorption, which indicates that the energy utilization rate is not high under the condition of large axial pressure. Through the analysis of energy utilization, it is found that the smaller the impact load, the higher the energy utilization rate. The greater the axial pressure, the lower the energy utilization rate. when the axial pressure is large, the impact loads corresponding to the maximum values of reflectivity, transmissivity and absorptivity are the same. The relationship between reflectivity and transmissivity is negatively correlated.

Key Words

red sandstone soil; static-dynamic coupling loading; stress-strain; specific energy absorption value; energy utilization rate

Address

Tong Wang: 1.)School of Civil Engineering, Xi\'an University of Architecture and Technology, Xi\'an 710055, China 2.) School of Resources and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China Zhanping Song and Junbao Wang: 1.) School of Civil Engineering, Xi\'an University of Architecture and Technology, Xi\'an 710055, China 2.) Shaanxi Key Laboratory of Geotechnical and Underground Space Engineering, Xi\'an 710055, China Jianyong Yang:School of Resources and Environmental Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China Xuegang Zhang: School of Civil Engineering, Xi\'an University of Architecture and Technology, Xi\'an 710055, China

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