Experimental research on the structural optimization of grouting holes in circular and rectangular pipe sections for trenchless pipe jacking
Abstract In trenchless pipe jacking engineering practice, the formation of high-quality slurry jacket on the outer wall of pipe section is the key to effectively reducing the pipe-soil frictional resistance, improving the construction efficiency, reducing the construction risk and ensuring the const...
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Nature Portfolio
2025-01-01
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| Online Access: | https://doi.org/10.1038/s41598-025-85327-1 |
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| author | Jiwei Wen Yachen Ma Tian Xiang Minchuan Gan Huilin Qiao Wenhao Zhang Dongyu Li Jiale Wu Zizhe Lu |
| author_facet | Jiwei Wen Yachen Ma Tian Xiang Minchuan Gan Huilin Qiao Wenhao Zhang Dongyu Li Jiale Wu Zizhe Lu |
| author_sort | Jiwei Wen |
| collection | DOAJ |
| description | Abstract In trenchless pipe jacking engineering practice, the formation of high-quality slurry jacket on the outer wall of pipe section is the key to effectively reducing the pipe-soil frictional resistance, improving the construction efficiency, reducing the construction risk and ensuring the construction safety. Herein, the multifunctional experimental apparatus for the pipe-soil frictional resistance testing is improved to ensure the smooth implementation of the subsequent experimental research. The influences of the structural parameters of grouting holes in circular and rectangular pipe sections on the pipe-soil frictional resistance and the states of slurry jackets around the various pipe sections are investigated respectively based on orthogonal experiment. Key findings include the pipe-soil frictional resistances increase with the increase of the spacing between adjacent grouting holes and the deflection angle of grouting holes, the layout of grouting holes has the greatest influence on pipe-soil frictional resistance, reasonable and uniform layout of grouting holes around the pipe sections can form more complete high-quality slurry jackets, to show better pipe-soil frictional resistance reduction effect. Moreover, the optimal structural parameters of grouting holes in circular and rectangular pipe sections are the same, i.e. the layout is triple grouting holes, the spacing between adjacent grouting holes S is 417 mm, and the deflection angle of grouting holes α is 40°. These insights could provide some scientific and valuable guidance for pipe-soil frictional resistance reduction during trenchless pipe jacking. |
| format | Article |
| id | doaj-art-36c21f6a2f734c0aa7f3290640408646 |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-36c21f6a2f734c0aa7f32906404086462025-01-12T12:19:35ZengNature PortfolioScientific Reports2045-23222025-01-0115111810.1038/s41598-025-85327-1Experimental research on the structural optimization of grouting holes in circular and rectangular pipe sections for trenchless pipe jackingJiwei Wen0Yachen Ma1Tian Xiang2Minchuan Gan3Huilin Qiao4Wenhao Zhang5Dongyu Li6Jiale Wu7Zizhe Lu8Key Laboratory of Roads and Railway Engineering Safety Control (Shijiazhuang Tiedao University), Ministry of EducationKey Laboratory of Roads and Railway Engineering Safety Control (Shijiazhuang Tiedao University), Ministry of EducationState Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of TechnologyKey Laboratory of Roads and Railway Engineering Safety Control (Shijiazhuang Tiedao University), Ministry of EducationKey Laboratory of Roads and Railway Engineering Safety Control (Shijiazhuang Tiedao University), Ministry of EducationKey Laboratory of Roads and Railway Engineering Safety Control (Shijiazhuang Tiedao University), Ministry of EducationKey Laboratory of Roads and Railway Engineering Safety Control (Shijiazhuang Tiedao University), Ministry of EducationKey Laboratory of Roads and Railway Engineering Safety Control (Shijiazhuang Tiedao University), Ministry of EducationKey Laboratory of Roads and Railway Engineering Safety Control (Shijiazhuang Tiedao University), Ministry of EducationAbstract In trenchless pipe jacking engineering practice, the formation of high-quality slurry jacket on the outer wall of pipe section is the key to effectively reducing the pipe-soil frictional resistance, improving the construction efficiency, reducing the construction risk and ensuring the construction safety. Herein, the multifunctional experimental apparatus for the pipe-soil frictional resistance testing is improved to ensure the smooth implementation of the subsequent experimental research. The influences of the structural parameters of grouting holes in circular and rectangular pipe sections on the pipe-soil frictional resistance and the states of slurry jackets around the various pipe sections are investigated respectively based on orthogonal experiment. Key findings include the pipe-soil frictional resistances increase with the increase of the spacing between adjacent grouting holes and the deflection angle of grouting holes, the layout of grouting holes has the greatest influence on pipe-soil frictional resistance, reasonable and uniform layout of grouting holes around the pipe sections can form more complete high-quality slurry jackets, to show better pipe-soil frictional resistance reduction effect. Moreover, the optimal structural parameters of grouting holes in circular and rectangular pipe sections are the same, i.e. the layout is triple grouting holes, the spacing between adjacent grouting holes S is 417 mm, and the deflection angle of grouting holes α is 40°. These insights could provide some scientific and valuable guidance for pipe-soil frictional resistance reduction during trenchless pipe jacking.https://doi.org/10.1038/s41598-025-85327-1Trenchless technologyPipe jackingPipe-soil frictional resistanceGrouting holesSlurry jacketLubrication and friction reduction |
| spellingShingle | Jiwei Wen Yachen Ma Tian Xiang Minchuan Gan Huilin Qiao Wenhao Zhang Dongyu Li Jiale Wu Zizhe Lu Experimental research on the structural optimization of grouting holes in circular and rectangular pipe sections for trenchless pipe jacking Scientific Reports Trenchless technology Pipe jacking Pipe-soil frictional resistance Grouting holes Slurry jacket Lubrication and friction reduction |
| title | Experimental research on the structural optimization of grouting holes in circular and rectangular pipe sections for trenchless pipe jacking |
| title_full | Experimental research on the structural optimization of grouting holes in circular and rectangular pipe sections for trenchless pipe jacking |
| title_fullStr | Experimental research on the structural optimization of grouting holes in circular and rectangular pipe sections for trenchless pipe jacking |
| title_full_unstemmed | Experimental research on the structural optimization of grouting holes in circular and rectangular pipe sections for trenchless pipe jacking |
| title_short | Experimental research on the structural optimization of grouting holes in circular and rectangular pipe sections for trenchless pipe jacking |
| title_sort | experimental research on the structural optimization of grouting holes in circular and rectangular pipe sections for trenchless pipe jacking |
| topic | Trenchless technology Pipe jacking Pipe-soil frictional resistance Grouting holes Slurry jacket Lubrication and friction reduction |
| url | https://doi.org/10.1038/s41598-025-85327-1 |
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