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Journal articles on the topic 'Jet grouting'

Author: Grafiati

Published: 4 June 2021

Last updated: 31 May 2022

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1

Krysan, Volodymyr, and Vitaliy Krysan. "Jet and jet-mixing grouting." ACADEMIC JOURNAL Series: Industrial Machine Building, Civil Engineering 2, no. 51 (October 12, 2018): 68–72. http://dx.doi.org/10.26906/znp.2018.51.1294.

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Analysis of ground cement elements production technologies by jet, jet mixing and mixing technologies with the consumption of various quantities of cement needed for their manufacture is carried out, their applicability is determined. It has been defined that design of bases and building bases grouted by ground-cement elements on weak and subsidence soils requires scientific approach. Mixing and jet-mixing technologies are more cost-effective ones and do not require pulp utilization; the material (ground cement) obtained during soils jet grouting for determining change in its characteristics in time and under the influence of various factors should be studied.

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2

Poh, Teoh Yaw, and Ing Hieng Wong. "A field trial of jet-grouting in marine clay." Canadian Geotechnical Journal 38, no. 2 (April 1, 2001): 338–48. http://dx.doi.org/10.1139/t00-093.

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The basement excavation of the Singapore Post Center involved extensive jet-grouting to improve the soft marine clay present within the excavation. The treated soil mass, with much improved strength and deformation characteristics, was intended to act as an internal strut below the bottom of the excavation level, reducing movements caused by the basement excavation. This paper presents the performance of a well-instrumented field jet-grouting trial during the construction of the building basement. Results of monitoring suggest that the jet-grouting trial caused the retaining diaphragm walls and the adjacent soils immediately behind and at some distance away from the walls to move away from the jet-grouted area. The maximum free field lateral soil movements in the excavation side of the jet-grouted mass were much larger than the corresponding lateral movements behind the wall. The results suggest that the diaphragm wall provided considerable restraint, thereby reducing the lateral movements of the soil behind the wall induced by the jet-grouting. Bending moments were induced in the diaphragm walls due to the jet-grouting work. The jet-grouting also caused some increase in the lateral earth pressure and the piezometric levels.Key words: jet-grouting, ground improvement, diaphragm wall, ground movements.

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3

COOMBER, DB, and AL BELL. "INFORMAL DISCUSSION. JET GROUTING." Proceedings of the Institution of Civil Engineers 80, no. 6 (December 1986): 1661–64. http://dx.doi.org/10.1680/iicep.1986.541.

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4

Morey, J., and R. R. W. Harris. "Jet grouting in construction." Geological Society, London, Engineering Geology Special Publications 10, no. 1 (1995): 105–14. http://dx.doi.org/10.1144/gsl.eng.1995.010.01.08.

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5

Al-Kinani, Ali M., and Mahmood D. Ahmed. "Comparison of Single and Group Jet Grouting Columns Capacity Based on Field Load Test and Theoretical Methods." Civil Engineering Journal 5, no. 6 (June 23, 2019): 1353–66. http://dx.doi.org/10.28991/cej-2019-03091337.

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The evaluation of axial capacity of jet grouted soil cement columns in soft soil is a complicated issue because it depends according to the number of factors such as, soil type, influence mixture between soil and grouting materials, nozzle jet energy, jet grouting and water flow rate, rotation and lifting speed. These parameters related to the type of jet grouting methods (single, double and triple system). Most methods of design the bearing capacity of the jet-grouting column based on experience. Therefore, some designer calculates the bearing capacity of the jet grouting column based on jet grout section capacity. In this paper, different theoretical methods have been used to estimate of the jet grouting soil-cement capacity, such as Poulos and Davis, 1980 methods and then their comparison with the pile load test calculations based on the quick pile load test as presented in ASTM-D1143-07. Therefore, the study describes a prototype test single and group jet grout soil-cement models of arrangement (1*1, 1*2 and 2*2) for total length to diameter ratios (L/D) is 13.33 and clear spacing three times of diameter has been constructed in soft clayey soils in the right bank of the Euphrates River, at Al- Nasiriyah city. As a result, the theoretical method for estimation the bearing capacity gives unfaithful values for the single and group jet grout column compared to the load- settlement calculations obtained from field pile load test data. On the other hand, the Hansen’s 90% and Butler and Hoy’s given closer results to each other and may be considered faithful interpretation methods to compute the bearing capacity of single and group jet grouting columns.

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6

Heidari, Mahdi, and Fulvio Tonon. "Ground reaction curve for tunnels with jet grouting umbrellas considering jet grouting hardening." International Journal of Rock Mechanics and Mining Sciences 76 (June 2015): 200–208. http://dx.doi.org/10.1016/j.ijrmms.2015.03.021.

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7

Wang, Xiaojun, Zhipeng Mao, and Wendi Wang. "Digital Evaluation of Vertical Compressive Bearing Capacity for Jet Grouting Pile-Mini Steel Pipe Pile Composite Foundation." Mathematical Problems in Engineering 2022 (May 11, 2022): 1–9. http://dx.doi.org/10.1155/2022/8499597.

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The jet grouting pile-mini steel pipe pile in soft soil area is composed of the jet grouting pile and the mini steel pipe pile. Through the analysis of the stress mode of the composite foundation under the overall compression of the pile top, the hypothetical diagram and calculation equation of the interfacial friction resistance distribution of the composite foundation are put forward. Thus, the calculation equation of the axial force of the mini steel pipe pile and the jet grouting pile is deduced, and the axial force distribution diagram of the mini steel pipe pile and the jet grouting pile in the composite foundation is defined. The vertical compression composite foundation in the field was selected for bearing capacity test and calculation and comparative analysis, and the relative error was 3%. Therefore, the stress mode and calculation method of the jet grouting pile-mini steel pipe pile proposed in this paper can meet the needs of engineering design and popularization and application of the composite foundation.

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8

Liu, Gang Yu, and Bing Long Wang. "Study on the Effect of Jet Grouting Pile Reinforcing Soft Soil Subgrade." Advanced Materials Research 594-597 (November 2012): 1420–28. http://dx.doi.org/10.4028/www.scientific.net/amr.594-597.1420.

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Composite foundation is commonly used to control the soft soil subgrade settlement. Considering that post-construction settlement of high speed railway is strictly controlled, it’s supposed to use jet grouting pile to strengthen the existed composite foundation and it’s necessary to analyse the effectiveness. Take a line as an example, analyse embankment settlement regularity of the original design mixing pile reinforcement and jet grouting pile reinforcement, evaluate the effect of the jet grouting pile reinforcement. The results show that the jet grouting pile reinforcement on the basis of original design does not have obvious effect on the embankment surface and ground surface settlement control, but effectively controls horizontal displacement at toe of slope and improves the foundation stability.

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9

Wang, Shu Li, Man Gen Mu, Dun Wu Chen, and Geng Ren. "Field Design of Jet Grouting Parameters on Soilcrete Columns." Applied Mechanics and Materials 170-173 (May 2012): 3068–71. http://dx.doi.org/10.4028/www.scientific.net/amm.170-173.3068.

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Method of jet grouting has become one of the ground improvement technologies used to address seepage concerns and to provide strength improvement of soils. The soilcrete columns can be also used to form seepage vertical cut-off walls from a series of continuous and interconnected vertical columns in deep pit. If the native soil is not completely mixed with slurry, the resulting columns will have soil inclusions which can increase the permeability of the column or fail barrier to water flow. Specifications of soilcrete columns that are achieved from the jet grouting procedures from the diameter and strength aspect depend on jet grouting parameters such as grout pressure, lifting speed, number and diameter of nozzles and c/w ratio and specifications of local soil. Different soil must use different jet grouting parameters.

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10

Modoni, G., P. Croce, and L. Mongiovì. "Theoretical modelling of jet grouting." Géotechnique 56, no. 5 (June 2006): 335–47. http://dx.doi.org/10.1680/geot.2006.56.5.335.

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11

Coomber, D. B. "Groundwater control by jet grouting." Geological Society, London, Engineering Geology Special Publications 3, no. 1 (1986): 445–54. http://dx.doi.org/10.1144/gsl.eng.1986.003.01.52.

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12

Bzówka, Joanna, Anna Juzwa, Konrad Wanik, Lidia Wanik, and Tomasz Żyrek. "Discussion on the Influence of Various Technological Parameters on Jet Grouting Columns Geometry." Transactions of the VŠB – Technical University of Ostrava, Civil Engineering Series. 15, no. 1 (June 1, 2015): 11–16. http://dx.doi.org/10.1515/tvsb-2015-0002.

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Abstract One of the most popular elements created by using jet grouting technology are columns. During designing such columns, it is a problem of estimating their shape and dimensions. The main factors that influence on columns geometry are soil characteristic and technological parameters. At the frame of Authors scientific research, following technological factors were taken into account: system of jet grouting, injection pressure, dimension of nozzles and rotation speed during injection. In the paper some results of the field tests of jet grouting columns are presented

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13

Cheng, Shih-Hao, Hung-Jiun Liao, Junichi Yamazaki, and Ricky K. N. Wong. "Evaluation of jet grout column diameters by acoustic monitoring." Canadian Geotechnical Journal 54, no. 12 (December 2017): 1781–89. http://dx.doi.org/10.1139/cgj-2017-0025.

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To evaluate the diameter of jet grout columns actually formed under the ground, several methods had been developed over the past years. Nevertheless, uncertainty still exists in different methods mostly due to the variations of ground and grouting conditions. This study proposes an acoustic monitoring system capable of directly recording the jet grouting sounds detected at different distances from the jet nozzle. To correlate the actual diameter of the jet grout column with the monitored sound prints, a field test was conducted in an interlayered sandy and gravelly soil and the jet grout column was excavated for dimension measurement. The recorded sounds show that the distribution of the threshold peak amplitudes at different distances can be represented by the curve of the normal distribution function. In addition, the standard deviation and mean of the normally distributed threshold peak amplitudes can be used as indicators to determine the effective diameter of the jet grout column for a specific jet grouting project. Although this acoustic monitoring method would be costly and time-consuming if used to examine all jet grout columns, it is suitable for frequent use in trial tests for finding reasonable grouting parameters when forming jet grout columns with design diameters.

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14

Zhang, Jin, Tao Liu, and Zhi Wei Jiang. "Application of Horizontal Jet Grouting in Qingdao Tunnel Construction." Applied Mechanics and Materials 353-356 (August 2013): 1547–50. http://dx.doi.org/10.4028/www.scientific.net/amm.353-356.1547.

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With the background of Qingdao Baoer~Hexi subway station in Water-rich Sand Stratum, research the application of horizontal jet grouting in soils underlain by rock. Introduce the difficulties in engineering and the optimization process in horizontal jet grouting. In order to understand its reinforcement effect, samples to test the point of load and compressive strength, at the same time, analyzes the impact of stratum settlement based on the monitoring data. Monitoring results show that horizontal jet grouting has great effects in control the settlement. The research results would provide guidance for the subsequent construction.

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15

Guan, Chengli, and Yuyou Yang. "Field Study on the Waterstop of the Rodin Jet Pile Method in a Water-Rich Sandy Gravel Stratum." Applied Sciences 9, no. 8 (April 25, 2019): 1709. http://dx.doi.org/10.3390/app9081709.

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Due to the increasing depths of underground urban construction, the surrounding environment and hydrogeological conditions are becoming increasingly complex, and conventional high-pressure rotary jet grouting has become unable to meet construction needs. At present, Rodin jet pile (RJP) ultra-high-pressure rotary jet grouting has been widely used as a grouting reinforcement method for deep and large foundations in silty soils, fine sands and clay strata; however, there have been no successful applications in a sandy gravel stratum with high water content (namely, water-rich sandy gravel stratum). Therefore, this paper uses the ventilating shaft in a section of the Beijing Metro as the construction background to carry out field tests on the RJP ultra-high-pressure rotary jet grouting method and waterstop in a water-rich sandy gravel stratum. Through a series of experiments monitoring the formation deformation and pore water pressure and exposing the pile diameter, pile occlusion, pile strength, and permeability of the test pile construction process, it is believed that, for the RJP ultra-high-pressure construction method in a water-rich sandy gravel stratum, reliable jet solidification can occur, the joint between jets can be achieved, the solid strength can reach 10 MPa or higher, and the permeability coefficient can reach 10−8 cm/s. Therefore, RJP ultra-high-pressure rotary jet grouting can be applied as a waterstop method in water-rich sandy gravel stratum.

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16

Croce, P., and A. Flora. "Analysis of single-fluid jet grouting." Géotechnique 50, no. 6 (December 2000): 739–48. http://dx.doi.org/10.1680/geot.2000.50.6.739.

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17

Greenwood, D. A. "Discussion: Theoretical modelling of jet grouting." Géotechnique 58, no. 6 (August 2008): 533–35. http://dx.doi.org/10.1680/geot.2008.58.6.533.

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18

Croce, P., and G. Modoni. "Design of jet-grouting cut-offs." Proceedings of the Institution of Civil Engineers - Ground Improvement 11, no. 1 (January 2007): 11–19. http://dx.doi.org/10.1680/grim.2007.11.1.11.

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19

Ishutina, Sofya Aleksandrovna. "The use of water-jet grouting." Interactive science, no. 1 (March 21, 2016): 92–94. http://dx.doi.org/10.21661/r-17275.

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20

Morey, J. "Les domaines d’application du Jet grouting." Revue Française de Géotechnique, no. 61 (1992): 17–30. http://dx.doi.org/10.1051/geotech/1992061017.

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21

Carvajal, Gabriel, and Sunil Arora. "Jet Grouting to Provide Scour Protection." Transportation Research Record: Journal of the Transportation Research Board 2201, no. 1 (January 2010): 10–16. http://dx.doi.org/10.3141/2201-02.

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22

Dwi Atmanto, Indrastono. "PENGENALAN STABILISASI TANAH DENGAN JET GROUTING." Teknik 34, no. 2 (September 13, 2013): 75. http://dx.doi.org/10.14710/teknik.v34i2.5628.

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Due to restriction of land availability it is frequently we have to build constructions on soft or low bearingcapacity soils, so that soil stabilization must be applied in order to increase its properties. There are manytechniques of soil stabilization, where its applicability depends on many factors regarding appropriateengineering judgement. This paper presents the soil stabilization method by jet grouting, including its theory andpractice.

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23

Inazumi, Shinya, Sudip Shakya, Takahiro Komaki, and Yasuharu Nakanishi. "Numerical Analysis on Performance of the Middle-Pressure Jet Grouting Method for Ground Improvement." Geosciences 11, no. 8 (July 26, 2021): 313. http://dx.doi.org/10.3390/geosciences11080313.

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This study focused on the middle-pressure jet grouting method, which has a complicated development mechanism for the columnar soil-improved body, with the aim of establishing a computer-aided engineering (CAE) system that can simulate the performance on a computer. Furthermore, in order to confirm the effect of middle-pressure jet grouting with mechanical agitation and mixing, a comparative analysis was performed with different jet pressures, the development situation was visualized, and the performance of this method was evaluated. The results of MPS-CAE as one of the CAE systems showed that the cement slurry jet ratio in the planned improvement range, including the periphery of the mixing blade, by the middle-pressure jet grouting together with the mechanical agitation and mixing was increased and a high quality columnar soil-improved body was obtained. It is expected that the introduction of CAE will contribute to the visualization of the ground, and that CAE will be an effective tool for the visual management of construction for ground improvement and the maintenance of improved grounds during the life cycle of the ground-improvement method.

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24

Qiu, Yu Liang, Wan Kun Zheng, Bao Tong Shi, and Rui Huang. "Research on Grouting Experiment in Aeolian Sand Tunnel." Advanced Materials Research 382 (November 2011): 316–20. http://dx.doi.org/10.4028/www.scientific.net/amr.382.316.

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Portland cement, superfine cement and modified sodium silicate have been taken as grouting materials in the aeolian sand tunnel which is characterized by single particle, bad gradation and loose structure. In this paper, penetration grouting and rotary jet grouting have been adopted in site grouting experiment, whose effects are tested by excavation sampling test and field excavation detection. The grouting feature of aeolian sand formation has been revealed. In the meantime, the applicability of different kinds of grouting materials in aeolian sand tunnel have been clarified which provides useful significance and reference value on the selection of grouting parameter and construction in aeolian sand tunnel.

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25

Farhangi, Visar, Moses Karakouzian, and Marten Geertsema. "Effect of Micropiles on Clean Sand Liquefaction Risk Based on CPT and SPT." Applied Sciences 10, no. 9 (April 29, 2020): 3111. http://dx.doi.org/10.3390/app10093111.

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Liquefaction is a hazardous seismic-based phenomenon, which causes an abrupt decrease in soil strength properties and can result in the massive destruction of the built environment. This research presents a novel approach to reduce the risk of soil liquefaction using jet-grouted micropiles in clean sands. The saturated soil profile of the study project mainly contains clean sands, which are suitable to more reliably employ simplified soil liquefaction analyses. The grouting is conducted using 420 micropiles to increase the existing soil properties. The effect of jet grouting on reducing the potential of liquefaction is assessed using the results of the cone penetration test (CPT) and the standard penetration test (SPT), which were conducted before and after jet grouting by implementing micropiles in the project sites. According to three CPT-based liquefaction analyses, the Juang method predicts the most effective improvement range of the factor of safety in the clean sand. The Boulanger and Idriss, and Eurocode methods show comparable evaluations. Results of the SPT-based analyses show the most considerable increase of the factor of safety following the Boulanger and Idriss, and NCEER approaches in the SP soil. CPT- and SPT-based analyses confirm the effectiveness of jet grouting by micropiles on enhancing soil properties and reducing the risk of liquefaction.

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26

Guler, E., and G. Gumus Secilen. "Jet grouting technique and strength properties of jet grout columns." Journal of Physics: Conference Series 1928, no. 1 (June 1, 2021): 012006. http://dx.doi.org/10.1088/1742-6596/1928/1/012006.

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27

Pinto, Ricardo, and José Borges. "Escavação escorada em solo mole incorporando laje de fundo em jet grouting: Análise considerando os efeitos da consolidação." Geotecnia, no. 118 (March 21, 2010): 65–87. http://dx.doi.org/10.14195/2184-8394_118_4.

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Utilizando um programa baseado no método dos elementos finitos, analisa-se uma escavação multi-escorada em solo mole, reforçada no fundo com laje de jet grouting. O programa incorpora a teoria multidimensional de consolidação de Biot (formulação acoplada das equações de equilíbrio e de escoamento) com relações constitutivas simuladas pelo modelo de estados críticos p-q-θ. Avalia-se, em particular, da importância da instalação da laje de jet grouting, funcionando como escoramento abaixo da base da escavação, por forma a evitar a rotura do fundo daquela. É dada especial atenção à análise, durante e após o período construtivo, das pressões de água, dos excessos de pressão neutra, das tensões de corte, dos níveis de tensão e dos deslocamentos no maciço, bem como dos esforços axiais nas escoras, dos deslocamentos, momentos flectores e pressões na parede e dos esforços axiais e momentos flectores na laje de jet grouting.

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28

Zhang, Cong Jiao, Shi Bao Zhang, and Feng Shan Fan. "Application of High Pressure Jet Grouting Technology in the Seepage Control of Earth Dam Reinforcement." Advanced Materials Research 291-294 (July 2011): 3259–63. http://dx.doi.org/10.4028/www.scientific.net/amr.291-294.3259.

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Based on the construction practice of strengthening dam foundation and cross-strait dam end (0+149～0+330) high pressure jet grouting impervious wall of an earth dam, this paper expounds the construction equipment, technological process, construction parameters and construction method of high pressure jet grouting impervious wall construction. By analyzing the impervious wall’s depth, continuity, strength, permeable rate, the quality of the wall is eligible, and its indexes comfort the design requirements. The experiences are useful in similar earth dam reinforcement construction.

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29

Lunardi, P. "Ground improvement by means of jet-grouting." Proceedings of the Institution of Civil Engineers - Ground Improvement 1, no. 2 (April 1997): 65–85. http://dx.doi.org/10.1680/gi.1997.010201.

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30

Fang, Y. S., C. C. Kao, J. Chou, K. F. Chain, D. R. Wang, and C. T. Lin. "Jet grouting with the superjet-midi method." Proceedings of the Institution of Civil Engineers - Ground Improvement 10, no. 2 (April 2006): 69–76. http://dx.doi.org/10.1680/grim.2006.10.2.69.

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31

Greenwood, D. A. "Discussion: Design of jet-grouting cut-offs." Proceedings of the Institution of Civil Engineers - Ground Improvement 162, no. 1 (February 2009): 47–50. http://dx.doi.org/10.1680/grim.2009.162.1.47.

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32

Kimpritis, Thomas, Jamie R. Standing, and Robert Thurner. "Estimating column diameters in jet-grouting processes." Proceedings of the Institution of Civil Engineers - Ground Improvement 171, no. 3 (August 2018): 148–58. http://dx.doi.org/10.1680/jgrim.17.00001.

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33

Wang, Zhi-Feng, Shui-Long Shen, Chu-Eu Ho, and Ye-Shuang Xu. "Jet grouting for mitigation of installation disturbance." Proceedings of the Institution of Civil Engineers - Geotechnical Engineering 167, no. 6 (December 2014): 526–36. http://dx.doi.org/10.1680/geng.13.00103.

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34

Trunk, Ulrich, and Friedrich Winkler. "Jet grouting in tunnelling / Düsenstrahlverfahren im Tunnelbau." Geomechanics and Tunnelling 6, no. 3 (June 2013): 274–89. http://dx.doi.org/10.1002/geot.201300017.

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35

Modoni, Giuseppe, and Joanna Bzówka. "Analysis of Foundations Reinforced with Jet Grouting." Journal of Geotechnical and Geoenvironmental Engineering 138, no. 12 (December 2012): 1442–54. http://dx.doi.org/10.1061/(asce)gt.1943-5606.0000718.

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36

Essler, R. D. "Applications of jet grouting in civil engineering." Geological Society, London, Engineering Geology Special Publications 10, no. 1 (1995): 85–93. http://dx.doi.org/10.1144/gsl.eng.1995.010.01.06.

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37

Górski, Krzysztof, Rajmund Leszek Ignatowicz, Jędrzej Wierzbicki, Robert Mazur, and Jakub Mazurkiewicz. "The numerical calculations of influence of underpinning on foundations settlement." Studia Geotechnica et Mechanica 35, no. 4 (December 1, 2013): 47–64. http://dx.doi.org/10.2478/sgem-2013-0036.

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Abstract The paper presents numerical calculations of the influence of implementation technology for underpinning the footing on settlement, with the use of finite element method. Three cases of underpinning methods were taken for calculations, depending on the diameter of the jet grouting column and the order of works. The intensity of settlement of the base of the footing foundation is significantly influenced by the growth of Young’s modulus and the jet grouting column with time, until its complete curing and reaching final technological parameters.

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38

Wu, Nan. "Environmental Engineering Deformation Control of High-speed Railway Shield Tunnel Under Crossing Bridge Piles." Journal of Physics: Conference Series 2029, no. 1 (September 1, 2021): 012133. http://dx.doi.org/10.1088/1742-6596/2029/1/012133.

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Abstract With the continuous acceleration of my country’s high-speed rail construction, it is inevitable to cross the existing engineering structure during the construction process. During the construction of high-speed railway, the control of the influence and deformation of the existing structure is a subject that needs to be studied in environmental engineering. Hangzhou metro line 1 is designed to cross under the Hu-Hang high-speed railway. According to the design, the shield tunnel is very close (minimum distance 5.19m) to the bridge piles of the Hu-Hang high-speed railway. Therefore, how to control the deformation of the bridge piles is a big problem in the shield tunnel excavation. Before construction, the method of the bored piles coupled with the jet grouting piles was proposed. The 3D numerical model was built to study the deformation of the bridge piles with the cases of the shield tunnel excavation without soil consolidation, the construction of the bored piles coupled with the jet grouting piles and the shield tunnel excavation with soil consolidation. The results show that the method of the bored piles coupled with the jet grouting piles can control the deformation of the bridge piles in the shield tunnel excavation effectively. Then, the deformation monitoring of the bridge piles was performed in the process of construction. The monitored data were close to the calculated results, which implies that the method of the bored piles coupled with the jet grouting piles is effective.

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39

Zhang, Shi Bao, and Jie Wen. "Application of High Pressure Jet Grouting Technology in Seepage Prevention of ChuLou Reservoir." Applied Mechanics and Materials 238 (November 2012): 317–20. http://dx.doi.org/10.4028/www.scientific.net/amm.238.317.

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In view of the existing permeable sand layer and the leakage risk which threaten the earth dam foundation of Chulou reservoir, the high pressure jet grouting measure was applied to block leakage passage to solving the leakage problems of earth dam foundation. This paper mainly describes the high pressure jet grouting impermeable wall construction, including construction equipment, technological process, construction parameters and method, and wall quality detection. The test results show that the indexes such as wall depth, continuity, compressive strength, permeability coefficient meet the design requirements. The quality of impermeable wall is accepted.

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40

Wang, Chuan Li, Shu Qing Sun, Jian Zhong Xia, Bo Qian, Yong Sheng Li, Zhi Xin Wang, and Chun Xiao Ni. "Construction Quality Control and Inspection Measures of Ultra Deep Jet Grouting Pile." Applied Mechanics and Materials 357-360 (August 2013): 1543–47. http://dx.doi.org/10.4028/www.scientific.net/amm.357-360.1543.

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High pressure jet grouting piles have a wide range of application in the engineering field. However, nowadays the increasing construction depth leads to an increasing difficulty of construction,which involves that the quality of construction is much more difficult to control. In this paper, some examples are given of the Luoyuan ultra-deep high pressure jet grouting piles. These examples are described with the used construction quality control methods and preventive recommendations for work construction quality detection methods. That is why this paper has an important guiding significance for similar projects.

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41

Ředina, Tomáš. "RECONSTUCTION OF THE HISTORICAL BUILDING FOKSAL 13 AND 15 IN WARSAW." Acta Polytechnica CTU Proceedings 23 (July 30, 2019): 44–48. http://dx.doi.org/10.14311/app.2019.23.0044.

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We were asked to design geotechnical structures to enable reconstruction of historical buildings. Buildings have to meet current standards so load bearing capacity had to be increased and underground garages can be built. A description of the securing construction pit is described below as well as the design of the deep foundation. The construction pit was secured by jet-grouting columns with struts and soil nails. Parts of the walls were underpinned by micropile trestles. Jet-grouting columns were also used for the deep foundation of existing walls.

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42

Shen, Shui-Long, Zhi-Feng Wang, Suksun Horpibulsuk, and Yong-Hyun Kim. "Jet grouting with a newly developed technology: The Twin-Jet method." Engineering Geology 152, no. 1 (January 2013): 87–95. http://dx.doi.org/10.1016/j.enggeo.2012.10.018.

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43

Wang, Chuan Li, Shu Qing Sun, Jian Zhong Xia, Bo Qian, Yong Sheng Li, Zhi Xin Wang, and Chun Xiao Ni. "New Construction Machinery Developed in Ultra-Deep High Pressure Jet Grouting Pile." Advanced Materials Research 734-737 (August 2013): 2650–54. http://dx.doi.org/10.4028/www.scientific.net/amr.734-737.2650.

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High pressure jet grouting pile has been widely used in engineering application, with the increase of depth, demand for construction machinery will increase, also the difficulty of the construction quality control. Through the deep soft soil area in southeast coastal areas in fujian actual engineering example, we have improved ultra-deep Yet Grouting Pile machinery to meet the construction requirements.

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44

Li, Xiao Long, Bing Long Wang, Xue Li, and Chang Ji. "Analysis of Anti-Floating Measures and Construction Parameters of Shield Tunnel through River under Ultra-Shallow Covering." Applied Mechanics and Materials 353-356 (August 2013): 628–34. http://dx.doi.org/10.4028/www.scientific.net/amm.353-356.628.

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Shield tunnel through the river under shallow covering usually facing the phenomenon of tunnel floating due to the thickness of overburden layer inadequate,and resulting in flooding accident due to the overburden layer split.Aiming at the project of Hangzhou metro line one through the Tangjia river under ultra-shallow covering,checking the thickness of overburden layer and taking the measures of anti-floating plate,uplift pile and jet-grouting piles to resist tunnel floating;through the control of soil chamber pressure,driving speed and grouting pressure in the process of construction,tunnel axis is controlled within±30mm,the amount of surface uplift is less than 10mm,tunnel segments without breakage and leakage.The results show that using anti-floating plate,uplift pile and jet-grouting piles,and controlling the construction parameters strictly are effective measures to resist tunnel floating and ensure construction safety.

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45

Wang, Zhi-Feng, Jack S. Shen, and Wen-Chieh Cheng. "Simple Method to Predict Ground Displacements Caused by Installing Horizontal Jet-Grouting Columns." Mathematical Problems in Engineering 2018 (2018): 1–11. http://dx.doi.org/10.1155/2018/1897394.

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During the horizontal jet grouting in soft ground, injection of large volumes of water and grout into the soil can lead to significant ground displacements. A simple method is proposed in this paper to predict the ground displacements caused by installing horizontal jet-grouting columns. The process of installing a horizontal column is simplified as the expansion of a cylindrical cavity with a uniform radial stress applied at plastic-elastic interface in a half plane. In this study, the analytical solution is adopted to calculate the deformation induced by the expansion of a cylindrical cavity. Considering the main jetting parameters (jetting pressure of the fluid, flow rate of the fluid, and withdrawal rate of the rod) and the soil properties (stiffness of the surrounding soil), an empirical equation to estimate the radius of plastic zone is developed. Two field tests are carried out in Shanghai, China, to verify the correctness and applicability of the proposed method. Comparisons between the predicted and measured values indicate that the proposed method can provide a reasonable prediction. The proposed simple method can be recommended as a useful tool for the design of ground improvement by means of horizontal jet grouting.

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Qiu, Gang, and Xin Sheng Ge. "The Research of the Governance of Instability Retaining Wall." Advanced Materials Research 1065-1069 (December 2014): 85–88. http://dx.doi.org/10.4028/www.scientific.net/amr.1065-1069.85.

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According to retaining walls of joint construction buildings and office building of the mine of three yuan weizi town, outdoor pavement reinforcement of engineering practice, introduced the design parameters and construction process of the high-pressure jet grouting pile, soil nail wall and drilling grouting, the results showed that reinforcement scheme is reasonable and feasible, there is reference to other similar projects.

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Modoni, Giuseppe, Lidia Wanik, Gaspare Giovinco, Joanna Bzówka, and Angelo Leopardi. "Numerical analysis of submerged flows for jet grouting." Proceedings of the Institution of Civil Engineers - Ground Improvement 169, no. 1 (February 2016): 42–53. http://dx.doi.org/10.1680/grim.14.00012.

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48

Bauer, Sebastian, Christian Pichler, Klaus Meinhard, Markus Astner, and Roman Lackner. "Extending chemo-thermal quality assessment for jet grouting." Proceedings of the Institution of Civil Engineers - Ground Improvement 169, no. 4 (November 2016): 264–74. http://dx.doi.org/10.1680/jgrim.15.00019.

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Yuan, Yao, Shui-Long Shen, Zhi-Feng Wang, and Huai-Na Wu. "Automatic pressure-control equipment for horizontal jet-grouting." Automation in Construction 69 (September 2016): 11–20. http://dx.doi.org/10.1016/j.autcon.2016.05.025.

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50

Juzwa, Anna, and Joanna Bzówka. "Numerical Simulations of Settlement of Jet Grouting Columns." Transactions of the VŠB – Technical University of Ostrava, Civil Engineering Series. 16, no. 1 (March 1, 2016): 1–6. http://dx.doi.org/10.1515/tvsb-2016-0001.

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Abstract The paper presents the comparison of results of numerical analyses of interaction between group of jet grouting columns and subsoil. The analyses were conducted for single column and groups of three, seven and nine columns. The simulations are based on experimental research in real scale which were carried out by authors. The final goal for the research is an estimation of an influence of interaction between columns working in a group.

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