Results 21 to 30 of about 803 (177)

Ultrasoft Ground Treatment of Vacuum Preloading Combined with Calcium-Based Flocculants

open access: yesAdvances in Civil Engineering, 2020
Vacuum preloading is one of the popular methods improving the engineering properties of slurry ground with high water content. Commonly, the efficiency of vacuum preloading gradually decreased due to the clogging of prefabricated vertical drains (PVDs ...
Jin-Kai Yan   +6 more
doaj   +1 more source

Consolidation mechanism of vacuum preloading for dredged slurry and anti-clogging method for drains

open access: yesYantu gongcheng xuebao, 2021
Considering the key problem that the vacuum preloading method cannot efficiently improve dredged slurry, the research findings over the years obtained by the author’s research team are comprehensively summarized, including the following four aspects: (1)
CAI Yuan-qiang
doaj   +1 more source

A Hansbo's consolidation solution of sand-drained ground with impeded boundaries under vacuum and surcharge preloading

open access: yes工程科学学报, 2018
The top and bottom boundaries of sand-drained ground were visualized as impeded boundaries to investigate the effects of the pervious behaviors of the cushion above the top and the substratum below the bottom during the consolidation process of sand ...
HU Ya-yuan
doaj   +1 more source

Analysis of the conventional vacuum preloading method

open access: yesIOP Conference Series: Materials Science and Engineering, 2020
Abstract The conventional vacuum prepressing method is to reinforce the soft soil foundation. The process is to lay a certain height of horizontal sand cushion layer on the surface to form a horizontal drainage channel, and then set up a plastic drainage plate and connect it with a pumping pipe to form a vertical drainage channel.
openaire   +1 more source

Application of Vacuum Preloading in Foundation Treatment of River

open access: yesIOP Conference Series: Materials Science and Engineering, 2019
Abstract Vacuum preloading method is a commonly used dewatering and drying method for soft foundation soil in China, which has the characteristics of low cost and high treatment efficiency. Vacuum preloading method has been widely used throughout the country as a simple, fast and economical foundation treatment method. It is necessary to
Shi Xin, Lu Shanshan
openaire   +1 more source

Reverse vacuum preloading method for overlying backfill soil of blown silt foundation

open access: yesYantu gongcheng xuebao
A reverse vacuum preloading method is proposed to address the problems of poor reinforcement effects of deep soil and vacuum loss when the traditional vacuum preloading is used to treat silt foundation.
GAO Ziyang 1, 2, 3, 4 , WANG Jun 1, 2, 3, 4, GAO Mingwei 1, ZHU Xiaoxiao 1, 2, 3, 4, FU Hongtao 1, 2, 4, XU Zhao 5, LÜ Youchang 5
doaj   +1 more source

Model tests and numerical simulations of newly sheet-free vacuum preloading method for ultra-soft dredger fills

open access: yesYantu gongcheng xuebao, 2017
There are problems when dealing with the dredger fills using the traditional vacuum preloading method, for example, the treated area can not be too large and the plastic-sheet maybe leaks.
LEI Hua-yang 1, 2, LIU Ying-nan 2, FENG Shuang-xi2, LIU Jing-jin 1, 2
doaj   +1 more source

Finite Element Analysis of Vertical and Horizontal Drainage Structures under Vacuum Combined Surcharge Preloading

open access: yesAdvances in Civil Engineering, 2021
Combined vacuum and surcharge preloading has gradually been widely used because of its advantages of low cost, green environmental protection, and good treatment effect.
Daqing Wang   +6 more
doaj   +1 more source

Laboratory tests on vacuum preloading and electro-osmotic consolidation of calcareous soft soil

open access: yesYantu gongcheng xuebao, 2021
The calcareous soft soil mainly with fine particle content is distributed in the South China Sea and countries along the the Belt and Road. How to drain and consolidate is a subject worthy of study.
WANG Jing-zhou 1, DING Xuan-ming 1, 2, JIANG Chun-yong 1, FANG Hua-qiang 1
doaj   +1 more source

The effect of PVD layout on the consolidation characteristics of dredged slurry under vacuum preloading

open access: yesFrontiers in Marine Science, 2023
Vacuum preloading coupled with prefabricated vertical drains (PVDs) has been widely used to improve the property of the dredged slurry. However, the effect of PVD layout on slurry consolidation characteristics remains poorly understood.
Jing Cai, Zili He, Bin Xu, Mengfei Yu
doaj   +1 more source

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