Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Study on dynamic response of shield tunneling under existing railway subgrade
Taking the shield tunnel of Qingdao Metro Line 2 underpassing Jiaoji Railway as the engineering background, a three-dimensional numerical calculation model of track system-sub grade-foundation is established by using finite element software to study the dynamic response law of shield underpassing existing railway subgrade under the action of train moving load. The influence of different shield tunneling speed on subgrade acceleration is analyzed. The results show that under the influence of shield tunneling disturbance, the decrease of shield tunneling speed has a significant effect on the decrease of subgrade acceleration peak. When the train enters, the sub grade acceleration is greatly affected by the train, but the influence of shield tunneling speed reduction on the subgrade acceleration is still significant. The change of shield tunneling speed mainly affects the 5–10 Hz frequency domain but has little effect on the middle and high frequency domain. The research results can provide reference for intelligent shield tunneling.
Study on dynamic response of shield tunneling under existing railway subgrade
Taking the shield tunnel of Qingdao Metro Line 2 underpassing Jiaoji Railway as the engineering background, a three-dimensional numerical calculation model of track system-sub grade-foundation is established by using finite element software to study the dynamic response law of shield underpassing existing railway subgrade under the action of train moving load. The influence of different shield tunneling speed on subgrade acceleration is analyzed. The results show that under the influence of shield tunneling disturbance, the decrease of shield tunneling speed has a significant effect on the decrease of subgrade acceleration peak. When the train enters, the sub grade acceleration is greatly affected by the train, but the influence of shield tunneling speed reduction on the subgrade acceleration is still significant. The change of shield tunneling speed mainly affects the 5–10 Hz frequency domain but has little effect on the middle and high frequency domain. The research results can provide reference for intelligent shield tunneling.
Study on dynamic response of shield tunneling under existing railway subgrade
Guo, Renliang (Autor:in) / Zhang, Yongjuan (Autor:in) / Qi, Rui (Autor:in)
25.11.2022
635946 byte
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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