Reinforcement mechanism analysis of lattice beam and prestressed anchor rod system for loess slope
Lattice beam and prestressed anchor rod are used to enhance stability and prevent failure of soil or rock slopes. In this study, a model of Lattice beam and prestressed anchor rod (LBPAR) system was designed with reinforcement mechanisms and a model test was constructed with a circular slip surface...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Frontiers Media S.A.
2023-05-01
|
| Series: | Frontiers in Earth Science |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/feart.2023.1121172/full |
| _version_ | 1797830974136909824 |
|---|---|
| author | Yang Liu Yang Liu Dongdong Han Nina Liu Wentao Wang |
| author_facet | Yang Liu Yang Liu Dongdong Han Nina Liu Wentao Wang |
| author_sort | Yang Liu |
| collection | DOAJ |
| description | Lattice beam and prestressed anchor rod are used to enhance stability and prevent failure of soil or rock slopes. In this study, a model of Lattice beam and prestressed anchor rod (LBPAR) system was designed with reinforcement mechanisms and a model test was constructed with a circular slip surface of a loess slope. First, interaction between the loess slope and the LBPAR system was investigated by an LBPAR system analysis model. Stability of sliding mass from the sliding bed with an arc-shaped sliding surface was then studied by an experimental model designed. Finally, internal force distribution of lattice beams in the LBPAR system was investigated by using a large-scale physical model test. The results were compared to those calculated using the reverse beam method, indicating that the LBPAR system strengthened the sliding mass in space and improved the overall stability of the loess slope. With vertical loading, the axial tensile stress of the main anchor rod increases continuously. The bending area of the anchor rod was concentrated within 2 m of the sliding surface. And the maximum bending moment reaches 70 N·m. The sliding mass was subject to vertical load pressure, lattice beams’ pressure, and dead weight in the meantime and the maximum earth pressure value is near the node of the lattice beams. It is proved that such a method excels in the engineering design of loess landslides, which has promising applications in the future. |
| first_indexed | 2024-04-09T13:44:45Z |
| format | Article |
| id | doaj.art-794b86652b5846c8a939d0fbb770b2e6 |
| institution | Directory Open Access Journal |
| issn | 2296-6463 |
| language | English |
| last_indexed | 2024-04-09T13:44:45Z |
| publishDate | 2023-05-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Earth Science |
| spelling | doaj.art-794b86652b5846c8a939d0fbb770b2e62023-05-09T05:23:23ZengFrontiers Media S.A.Frontiers in Earth Science2296-64632023-05-011110.3389/feart.2023.11211721121172Reinforcement mechanism analysis of lattice beam and prestressed anchor rod system for loess slopeYang Liu0Yang Liu1Dongdong Han2Nina Liu3Wentao Wang4School of Urban Planning and Municipal Engineering, Xi’an Polytechnic University, Xi’an, ChinaState Key Laboratory of Green Building in Western China, Xi’an University of Architecture and Technology, Xi’an, Shaanxi, ChinaSchool of Geological Engineering and Geomatics, Chang’an University, Xi’an, Shaanxi, ChinaSchool of Geological Engineering and Geomatics, Chang’an University, Xi’an, Shaanxi, ChinaDepartment of Civil and Environmental Engineering, University of Michigan, Ann Arbor, MI, United StatesLattice beam and prestressed anchor rod are used to enhance stability and prevent failure of soil or rock slopes. In this study, a model of Lattice beam and prestressed anchor rod (LBPAR) system was designed with reinforcement mechanisms and a model test was constructed with a circular slip surface of a loess slope. First, interaction between the loess slope and the LBPAR system was investigated by an LBPAR system analysis model. Stability of sliding mass from the sliding bed with an arc-shaped sliding surface was then studied by an experimental model designed. Finally, internal force distribution of lattice beams in the LBPAR system was investigated by using a large-scale physical model test. The results were compared to those calculated using the reverse beam method, indicating that the LBPAR system strengthened the sliding mass in space and improved the overall stability of the loess slope. With vertical loading, the axial tensile stress of the main anchor rod increases continuously. The bending area of the anchor rod was concentrated within 2 m of the sliding surface. And the maximum bending moment reaches 70 N·m. The sliding mass was subject to vertical load pressure, lattice beams’ pressure, and dead weight in the meantime and the maximum earth pressure value is near the node of the lattice beams. It is proved that such a method excels in the engineering design of loess landslides, which has promising applications in the future.https://www.frontiersin.org/articles/10.3389/feart.2023.1121172/fulllandslideloess slopeprestressed anchor rodlattice framereinforcement mechanism |
| spellingShingle | Yang Liu Yang Liu Dongdong Han Nina Liu Wentao Wang Reinforcement mechanism analysis of lattice beam and prestressed anchor rod system for loess slope Frontiers in Earth Science landslide loess slope prestressed anchor rod lattice frame reinforcement mechanism |
| title | Reinforcement mechanism analysis of lattice beam and prestressed anchor rod system for loess slope |
| title_full | Reinforcement mechanism analysis of lattice beam and prestressed anchor rod system for loess slope |
| title_fullStr | Reinforcement mechanism analysis of lattice beam and prestressed anchor rod system for loess slope |
| title_full_unstemmed | Reinforcement mechanism analysis of lattice beam and prestressed anchor rod system for loess slope |
| title_short | Reinforcement mechanism analysis of lattice beam and prestressed anchor rod system for loess slope |
| title_sort | reinforcement mechanism analysis of lattice beam and prestressed anchor rod system for loess slope |
| topic | landslide loess slope prestressed anchor rod lattice frame reinforcement mechanism |
| url | https://www.frontiersin.org/articles/10.3389/feart.2023.1121172/full |
| work_keys_str_mv | AT yangliu reinforcementmechanismanalysisoflatticebeamandprestressedanchorrodsystemforloessslope AT yangliu reinforcementmechanismanalysisoflatticebeamandprestressedanchorrodsystemforloessslope AT dongdonghan reinforcementmechanismanalysisoflatticebeamandprestressedanchorrodsystemforloessslope AT ninaliu reinforcementmechanismanalysisoflatticebeamandprestressedanchorrodsystemforloessslope AT wentaowang reinforcementmechanismanalysisoflatticebeamandprestressedanchorrodsystemforloessslope |