Consolidation of Soft Foundation of Reclamation Projects
[1]ZHU Qunfeng,ZHAO Shiwen,YANG Shouhua,et al.Consolidation of Soft Foundation of Reclamation Projects[J].Journal of Zhengzhou University (Engineering Science),2012,33(05):16-21.[doi:10.3969/j.issn.1671-6833.2012.05.004]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
33卷
Number of periods:
2012 05
Page number:
16-21
Column:
Public date:
2012-09-10
- Title:
- Consolidation of Soft Foundation of Reclamation Projects
- Keywords:
- dredger fill; degree of vacuum ; post-construction settlement; bearing capacity; geotechnical water box
- CLC:
- TU472.6
- DOI:
- 10.3969/j.issn.1671-6833.2012.05.004
- Abstract:
- The dredger fill of reclamation projects is characterized by high water content, high compressionand low strength, etc. , and it must be reinforced because of its adverse effects on projects, Based on a practi.cal projeet, the dredger fill is consolidated by means of the vacuum preloading method, Field tests are per.formed by arranging in-situ instruments. Aecording to the results of displacement monitoring, the ground sur.face settlement is 1616 mm, the average degree of consolidation may reach 869 at the end of foundation rein-forcement, and the post-construction settlement is less than 300 mm, The horizontal displacement is less than10 mm. The compressive deformation of dredger fill per unit thickness is 267 mm/m, and it belongs to largedeformation. Aecording to the results of degree of vacuum and power water pressure monitoring, the degree ofvacuum which transmits in the dredger fill foundation has larger frictional loss. The average vane strength ofthe dredger fill after construction is 15. 2 kPa. The indices of the dredger fill are improved to some extent, Thebearing capacity of the foundation is more than 60 kPa, and the foundation consolidation is satisfactory. Theexisting problems in consolidating the dredger fill by use of the vacuum preloading method are discussed. lt issuggested that the consolidation method for the dredger fill should be improved by developing the geotechnicalwater Dox.
- References:
- -
- Similar References:
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Last Update:
1900-01-01