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| Reinforcement scheme of highway tunnel based on pile-plate composite structure replacing invert |
| DANG Xiaoyu1, MA Jinsong2
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| （1. Gansu Tiancheng Road and Bridge Survey and Design Co., Ltd., Lanzhou 730070, Gansu, China;2. Chongqing Branch, North China Municipal Engineering Design & Research Institute Co., Ltd., Chongqing 401147, China） |
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Abstract In view of the road diseases that occurred during the operation of the Shiyan to Tianshui Expressway, such as road cracks, bulges, kick drums, etc, the reinforcement measure using pile-plate composite structure replacing of invert was proposed, comprehensively considering of many factors such as tunnel geology, hydrology, lining structure, disease situation, construction conditions, disposal period, project cost, etc. Using finite element numerical simulation calculation, and getting through the comparison and analysis of on-site test data, the results showed that the reinforcement schemes based on pile-plate composite structure replacing invert could better control tunnel settlement and deformation, reduce road settlement diseases, ensure tunnel operation safety, and provide reference for the treatment of similar operating tunnel diseases.
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Received: 20 June 2022
Published: 20 March 2023
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