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The Design and Construction of Vacuum Surcharge Preloading in the Superhighway of Pinglin

Author: ZhuYunFei
Tutor: XuNengXiong；ZhuMingXing
School: Chinese Geology University (Beijing)
Course: Geological Engineering
Keywords: Vacuum preloading Soft ground Reinforcement Mechanism Highway Reinforcement Design Construction Monitoring
CLC: U416.1
Type: Master's thesis
Year: 2008
Downloads: 84
Quote: 0
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Abstract


Soft soil areas are widely distributed in our country , a lot of road construction in soft ground , soft soil because of its water content , high compression , low carrying capacity of unfavorable characteristics to highway construction to bring greater impact and hidden . To solve the problem , the current highway subgrade treatment preloading method and composite foundation treatment methods , but these methods are more difficult to meet the construction duration and requirements of settlement after the vacuum preloading law in these areas has a very big advantage . This article summarized in a review the vacuum preloading the historical development of the technology , Research and reinforcement mechanism based on combined Henan Ping k39 050-k39 110 section temporary highway soft foundation reinforcement this project examples , reinforcement design of vacuum preloading method construction steps , construction content elaborate , and through the membrane under vacuum degree , the pore water pressure , groundwater levels , land subsidence monitoring project monitoring results of a comprehensive analysis of the treatment effect of vacuum preloading method . Draw vacuum preloading method in Soft Foundation Treatment is more effective , has a broader promotion . Finally , on the basis of the results of the above research and analysis on the basis of practical experience optimized design ideas , such as : the horizontal arrangement of plastic drainage board instead of the filter tube , placed a vacuum pump , and improved low sand cushion to improve further promotion and application of the next stage of the research work is suggested.

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CLC: > Transportation > Road transport > Road works > Roadbed, pavement engineering > Subgrade
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