کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6447839 | 1641804 | 2014 | 14 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Seismic damage mechanism and dynamic deformation characteristic analysis of mountain tunnel after Wenchuan earthquake
ترجمه فارسی عنوان
مکانیزم آسیب لرزه ای و تجزیه و تحلیل ویژگی های دینامیکی پویای تونل کوهی پس از زلزله ونچوان
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
مهندسی ژئوتکنیک و زمین شناسی مهندسی
چکیده انگلیسی
After the 2008 Wenchuan earthquake (Mw = 8.3), many mountain highway tunnels in the affected area were severely damaged. In order to improve the current knowledge about the seismic performance of mountain tunnels under strong earthquakes, a forensic investigation was conducted on 52 tunnels after the earthquake. Based on the seismic damage data, the damage level of the inspected tunnels was classified using a new damage evaluation criterion. Subsequently, typical seismic damage characteristics and mechanisms of mountain tunnels were analyzed based on three different damage patterns: damage to shallow tunnel, damage to deep-buried tunnel structure and damage to pavement. Finally, based on the relative displacement (RD) method, a three-dimensional numerical model was developed to investigate the deformation characteristics of the portal structure under a strong earthquake. The numerical results showed that the tunnel lining cross section exhibited an alternate tension-compression deformation at the diagonal directions, and the relative displacement value of the upper-structure (above the sidewall) was generally more than that of the lower-structure (under the sidewall). Three stress states of the lining were deduced from the numerical model, which provided a good interpretation for the seismic tunnel damages observed after the Wenchuan earthquake.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Geology - Volume 180, 8 October 2014, Pages 85-98
Journal: Engineering Geology - Volume 180, 8 October 2014, Pages 85-98
نویسندگان
Yusheng Shen, Bo Gao, Xiaoming Yang, Shuangjiang Tao,