Abstract
In order to discuss the superiorities of High Vacuum Drubbing Means (HVDM) in soft foundation treatment of roads, this paper takes the soft foundation treatment project of Wucheng Road in Wuwei County of Wanjiang City Belt in China as an example. By comparing and analyzing the economic benefit differences between HVDM method and traditional powder injection pile method in soft soil foundation treatment, the following conclusions are drawn: Low-level high-vacuum compaction method soft base processing method is better than traditional powder-jet pile method in soft foundation treatment. The method can better reduce the consumption of raw materials such as cement and stone, avoid the pollution of the social environment caused by cement production, shorten the construction period by about 50 % and save the direct labor cost. Compared with the traditional powder-sprayed pile method, total cost of the project can be saved by more than 30 % and the construction quality is controllable. The construction process is green and its social and economic benefits are remarkable.
Highlights
With the rapid development of China’s social economy, road construction and bridge construction have played an important role in promoting regional economic development and will become the norm state of social and economic construction
There are some shortcomings in traditional road soft foundation treatment methods, such as long construction period, high cost, impacting natural landscape, destroying ecological environment
Low-level high vacuum compaction method is a new technology for fast consolidation of soft soil foundation
Summary
With the rapid development of China’s social economy, road construction and bridge construction have played an important role in promoting regional economic development and will become the norm state of social and economic construction. There are some shortcomings in traditional road soft foundation treatment methods, such as long construction period, high cost, impacting natural landscape, destroying ecological environment It will directly or indirectly cause air, soil and water pollution and lead to various geological disasters. Low-level high vacuum compaction method is a new technology for fast consolidation of soft soil foundation It mainly achieves the purpose of reducing soil water content, improving soil compactness and bearing capacity, reducing post-construction settlement and differential settlement of foundation through several times of high vacuum differential pressure drainage and several times of suitable variable energy compaction. Taking Wucheng Road soft foundation treatment project in Wuwei County of Wanjiang City Belt as an example, the economic and social benefits of low-level high vacuum compaction method and traditional dry jet pile method in dealing with bad subgrade are studied and analysed in this paper
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