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Application research of high pressure jet grouting pile in an underground engineering in Vietnam

Nguyen Xuan Loi, Wu Li, Nguyen Khanh Tung, Bui Quang Anh

Archives of Civil Engineering

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2020

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Vol. 66, nr 3

575--593

EN

High-pressure jet grouting pile is a kind of stratum reinforcement technology developed in recent years. Due to its characteristics of high solid strength, fast construction, low noise, safety and reliability, low cost, controllable reinforcement diameter, strong adaptability to stratum, and good reinforcement effect for soft soil, loose soil and water-rich stratum, high-pressure jet grouting pile technology has been more and more widely used in foundation treatment, water stop, and seepage prevention, tunnel lining and other fields in recent years. As a country with a relatively late development of underground construction engineering, Vietnam has little research on special geotechnical reinforcement technology, especially on special geotechnical reinforcement technology around urban underground construction engineering, especially on its theoretical analysis and practical application. Therefore, this thesis combines the Vietnam Trung Hoa tunnel project as an example, using the theoretical calculation formula and field monitoring measurement comparing the two methods, the high pressure jet grouting pile system research in Vietnam in the underground engineering reinforcement principle and application effect, get to the actual engineering design and construction has a guiding significance to the research, provides the reference for future similar projects. Finally, the application effect of high-pressure jet grouting pile in underground building reinforcement project is evaluated, which proves that high-pressure jet grouting pile has good applicability and economic benefit in underground building reinforcement project in Vietnam.

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Mechanizm formowania się oporu pobocznicy przy podstawie pala określony na podstawie badań laboratoryjnych

Meyer Z., Żarkiewicz K.

Inżynieria i Budownictwo

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2017

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R. 73, nr 5

263--265

PL

Opór pobocznicy jest kluczowym elementem w projektowaniu pali. Niewłaściwa interpretacja oporu pobocznicy pala może być przyczyną przeszacowania nośności pala. Przedstawiono analizę formowania się oporu pobocznicy przy podstawie pala opartą na wynikach badań laboratoryjnych.

EN

Skin friction is the main part of pile capacity design. Wrong interpretation of skin friction may cause overestimation of pile load capacity. Paper presents analysis of skin friction mobilization near to the toe of the pile, based on results of laboratory research. The relationship between toe resistance and skin friction during static pile load test was analysed.

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Poszerzanie podstaw pali metodą iniekcji strumieniowej

Szymankiewicz C.

Inżynieria i Budownictwo

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2013

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R. 69, nr 3

115-120

PL

Omówiono podstawowe cechy pali z podstawą poszerzoną za pomocą iniekcji strumieniowej, wyniki badań oraz uwarunkowania dotyczące możliwości wprowadzenia proponowanej technologii do praktyki inżynierskiej.

EN

The basic characteristics of piles with base expanded by jet grouting and the results of experimental pile tests were presented. The main advantage of the expending is increasing the pile bearing capacity by as much as 200% in suitable circumstances. Conditions applicable for the implementation of the proposed technology to the practice of engineering were discussed.