An Analytical Method of Coulomb’s Active Earth Pressure Acting on Cohesion-Less Backfill Subject to Local Surcharge in Cold Regions
The traditional Coulomb’s earth pressure theory does not consider the effect of local surcharge on the lateral earth pressure and its critical failure angle. However, in practice, local surcharges commonly act on the surface of frozen backfill that is affected by freeze-thaw actions in cold regions...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2020-01-01
|
| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2020/8827006 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832560303119794176 |
|---|---|
| author | Li Liu Zhen Yang Pan Zhou Hongwei Yang |
| author_facet | Li Liu Zhen Yang Pan Zhou Hongwei Yang |
| author_sort | Li Liu |
| collection | DOAJ |
| description | The traditional Coulomb’s earth pressure theory does not consider the effect of local surcharge on the lateral earth pressure and its critical failure angle. However, in practice, local surcharges commonly act on the surface of frozen backfill that is affected by freeze-thaw actions in cold regions and tend to affect the active thrust and its position. In paper, analytical solutions for estimating the active thrust, critical wedge failure angle, and action position subject to a local surcharge in cold regions are proposed. Herein, the simplified equivalent moment of surcharge is adopted on the premise of maintaining Coulomb’s earth pressure assumptions. The formula derivation is provided as a typical example to obtain the active thrust, critical wedge failure angle, and its position under a strip surcharge. Compared with previous approaches, the proposed solutions lead to easier evaluation of all indexes associated with Coulomb’s active earth pressure. Meanwhile, the expressions of Coulomb’s earth pressure under other types of nonuniform loading acting on the wall are discussed. In addition, sensitivity is performed to assess the effect of some main parameters. The results indicate that the dip angle of retaining wall-back and the friction angle of frozen backfill soil are two most significant indexes that influence the active thrust and its position. |
| format | Article |
| id | doaj-art-2b010148a9d4400b83488471748309e1 |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-2b010148a9d4400b83488471748309e12025-02-03T01:27:54ZengWileyAdvances in Civil Engineering1687-80861687-80942020-01-01202010.1155/2020/88270068827006An Analytical Method of Coulomb’s Active Earth Pressure Acting on Cohesion-Less Backfill Subject to Local Surcharge in Cold RegionsLi Liu0Zhen Yang1Pan Zhou2Hongwei Yang3Department of Construction Engineering, Shanxi Polytechnic College, Taiyuan, Shanxi 030006, ChinaSchool of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou, Jiangsu 221116, ChinaDepartment of Geotechnical Engineering, Tongji University, Shanghai 200092, ChinaCollege of Architecture and Civil Engineering, Xi’an University of Science and Technology, Xi’an, Shaanxi 710054, ChinaThe traditional Coulomb’s earth pressure theory does not consider the effect of local surcharge on the lateral earth pressure and its critical failure angle. However, in practice, local surcharges commonly act on the surface of frozen backfill that is affected by freeze-thaw actions in cold regions and tend to affect the active thrust and its position. In paper, analytical solutions for estimating the active thrust, critical wedge failure angle, and action position subject to a local surcharge in cold regions are proposed. Herein, the simplified equivalent moment of surcharge is adopted on the premise of maintaining Coulomb’s earth pressure assumptions. The formula derivation is provided as a typical example to obtain the active thrust, critical wedge failure angle, and its position under a strip surcharge. Compared with previous approaches, the proposed solutions lead to easier evaluation of all indexes associated with Coulomb’s active earth pressure. Meanwhile, the expressions of Coulomb’s earth pressure under other types of nonuniform loading acting on the wall are discussed. In addition, sensitivity is performed to assess the effect of some main parameters. The results indicate that the dip angle of retaining wall-back and the friction angle of frozen backfill soil are two most significant indexes that influence the active thrust and its position.http://dx.doi.org/10.1155/2020/8827006 |
| spellingShingle | Li Liu Zhen Yang Pan Zhou Hongwei Yang An Analytical Method of Coulomb’s Active Earth Pressure Acting on Cohesion-Less Backfill Subject to Local Surcharge in Cold Regions Advances in Civil Engineering |
| title | An Analytical Method of Coulomb’s Active Earth Pressure Acting on Cohesion-Less Backfill Subject to Local Surcharge in Cold Regions |
| title_full | An Analytical Method of Coulomb’s Active Earth Pressure Acting on Cohesion-Less Backfill Subject to Local Surcharge in Cold Regions |
| title_fullStr | An Analytical Method of Coulomb’s Active Earth Pressure Acting on Cohesion-Less Backfill Subject to Local Surcharge in Cold Regions |
| title_full_unstemmed | An Analytical Method of Coulomb’s Active Earth Pressure Acting on Cohesion-Less Backfill Subject to Local Surcharge in Cold Regions |
| title_short | An Analytical Method of Coulomb’s Active Earth Pressure Acting on Cohesion-Less Backfill Subject to Local Surcharge in Cold Regions |
| title_sort | analytical method of coulomb s active earth pressure acting on cohesion less backfill subject to local surcharge in cold regions |
| url | http://dx.doi.org/10.1155/2020/8827006 |
| work_keys_str_mv | AT liliu ananalyticalmethodofcoulombsactiveearthpressureactingoncohesionlessbackfillsubjecttolocalsurchargeincoldregions AT zhenyang ananalyticalmethodofcoulombsactiveearthpressureactingoncohesionlessbackfillsubjecttolocalsurchargeincoldregions AT panzhou ananalyticalmethodofcoulombsactiveearthpressureactingoncohesionlessbackfillsubjecttolocalsurchargeincoldregions AT hongweiyang ananalyticalmethodofcoulombsactiveearthpressureactingoncohesionlessbackfillsubjecttolocalsurchargeincoldregions AT liliu analyticalmethodofcoulombsactiveearthpressureactingoncohesionlessbackfillsubjecttolocalsurchargeincoldregions AT zhenyang analyticalmethodofcoulombsactiveearthpressureactingoncohesionlessbackfillsubjecttolocalsurchargeincoldregions AT panzhou analyticalmethodofcoulombsactiveearthpressureactingoncohesionlessbackfillsubjecttolocalsurchargeincoldregions AT hongweiyang analyticalmethodofcoulombsactiveearthpressureactingoncohesionlessbackfillsubjecttolocalsurchargeincoldregions |