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| Comparative analysis between integral-transform solution and separate variable method for consolidation of the ground by air-boosted vacuum preloading |
| SHEN Yupeng1，2，DONG Shuhai3，WANG Yunchao1，JIN Yawei4，LI Xinyu1 |
| (1. Key Laboratory of Track Engineering，Beijing Jiaotong University，Beijing 100044，China；2. Beijing Engineering and Technology Research Center of Rail Transit Line Safety and Disaster Prevention，Beijing Jiaotong University，Beijing 100044，China；
3. CCCC Third Harbor Consultants Co.，Ltd.，Shanghai 200032，China；4. Jiangsu Xintai Geotechnical Technology Co.，Ltd.，Yixin，Jiangsu 214267，China) |
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Abstract Air-boosted vacuum preloading can overcome the problem of clogging of classical vertical drains，but there is lack of theoretical basis for the consolidation of air-boosted vacuum preloading method. The analytical solution of consolidation of single-layer homogeneous soil with air-boosted vacuum preloading is proposed which is based on the assumption of equal strain of soil，Newman-Carrilo equation and the intergral-transform method. And the results were compared the analytical solution with that from the separation variable method. At last，the engineering practical charts and tables are put forward to actual reference. The results show that：With the increase of Th，the total average consolidation degree grows rapidly. With the increase of n，the consolidation rate decreases；the analytical solution obtained by integral-transform method and separation variable method have little difference，which can be used to complete the derivation of the analytical solution of air-boosted vacuum preloading consolidation.
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2019, Vol. 38 
