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| Dynamic response of deep circular composite-lined tunnel in saturated soil subjected to incident plane P-waves |
| Received:June 20, 2017 Revised:October 07, 2017 |
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| DOI：10.7511/jslx20170620001 |
| KeyWord:double linings saturated soil circular tunnel dynamic stress concentration factor |
| Author | Institution |
| 丁海滨 |
华东交通大学, 江西省岩土工程基础设施安全与控制重点实验室, 南昌 |
| 徐长节 |
华东交通大学, 江西省岩土工程基础设施安全与控制重点实验室, 南昌 ;浙江大学 滨海和城市岩土工程研究中心, 杭州 |
| 童立红 |
华东交通大学, 江西省岩土工程基础设施安全与控制重点实验室, 南昌 |
| 杨园野 |
华东交通大学, 江西省岩土工程基础设施安全与控制重点实验室, 南昌 |
| 郭生根 |
江西省港航管理局, 南昌 |
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| Abstract: |
| Based on wave function expansion method,an analytical solution for dynamic stress concentration of circular tunnel with double-layer-liner in saturated soil under incident plane P-waves is derived.The solutions are verified by degenerating the studied of saturated soil medium into elastic medium.According to the solutions,the internal dynamic stress concentration factor is larger than the dynamic stress concentration factor at the outer boundary of double-layer liner in saturated soil.The elastic modulus of the outer lining and the inner lining affect the dynamic stress concentration factor of the lining greatly.The material of inside lining with lest rigidity should be chosen,under the condition of the outer lining stability.Increasing the thickness of the outer lining and the inner lining could reduce the dynamic stress concentration factor of the lining obviously. |
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