Abstract：To investigate the dynamic response of HDPE corrugated pipeline under blasting vibration, blasting experiments on embedded HDPE pipeline were conducted, and the vibration characteristics of HDPE pipelines with different blasting distances were analyzed. Furthermore, based on the finite element software LSDYNA, the numerical model for field test and the numerical model for water-filled HDPE pipeline were established, so that the dynamic responses of water-filled HDPE pipe under blasting vibration were studied, and the safety criterion of the HDPE pipeline was proposed according to the Code. The results show that under the blasting vibration, the vibration velocity value of water-filled HDPE pipe is slightly less than that of water-free pipeline, indicating that water in the pipeline can reduce the impact of blasting vibration to a certain extent. Both the vibration velocity and von Mises stress at the blasting side of each section of the pipeline are greater than those of the back blasting side of the pipeline, and the vibration response of the pipeline is relatively larger near the bottom of the pipeline. In addition, there is a linear function relationship between the peak von Mises stress and the peak vibration velocity of the pipeline, and under different burial depths there is a functional relationship between the pipeline vibration velocity and the surface vibration velocity. Based on the maximum allowable working pressure of pipeline in the Code and the functional relationship of pipeline stress and vibration velocity, the controlled vibration velocity of HDPE corrugated pipelines (water filled) with different burial depth under the site conditions is obtained, which provides guidance for engineering practice.
胡宗耀 蒋楠 周传波 蔡忠伟 罗学东 张玉琦. 充水高密度聚乙烯波纹管爆破振动动力响应特性[J]. 土木工程学报, 2021, 54(11): 99-108.
Hu Zongyao Jiang Nan Zhou Chuanbo Cai Zhongwei Luo Xuedong Zhang Yuqi. Dynamic response characteristics of water-filled high density polyethylene corrugated pipelines under blasting vibration. 土木工程学报, 2021, 54(11): 99-108.
