A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Dynamic Compaction of Fill in a Mountainous Area
This paper presents a case study using dynamic compaction to improve fill in a mountainous area in China. This fill is composed of weathered rock and soil with grain sizes mostly between 5 and 200 mm, but with the largest size over 500 mm. The fill, which has been dumped and placed without compaction over the past 2 years, ranges from 2 to 8 m thick across the site. The bearing capacity of this fill was about 70 to 100 kPa. Dynamic compaction consisting of two high-energy passes and two low-energy passes were applied to improve the ground. The compaction energy of each high-energy pass was 3000 kN⋅m, and the grid spacing was 5 x 5 m. The compaction energies of the first and second low-energy passes were 1500 kN⋅m and 1000 kN⋅m, respectively. After the dynamic compaction, plate loading tests, field density tests, ground penetrating radar explorations, and other tests were performed. The tests show that the ultimate bearing capacity after improvement is over 440 kPa, the average secant elastic modulus is 34.50 MPa, the depth of influence of the dynamic compaction is at least 6 m, and the relative compaction is more than 95%. These values satisfied the design requirements for a building that was constructed on the fill after dynamic compaction. The building's foundation elements consist of reinforced concrete strip footings. The observed settlement of the building became stable rather quickly after construction, and the total building settlement was only 12 mm. Dynamic compaction effectively improved the fill in this mountainous area in China.
Dynamic Compaction of Fill in a Mountainous Area
This paper presents a case study using dynamic compaction to improve fill in a mountainous area in China. This fill is composed of weathered rock and soil with grain sizes mostly between 5 and 200 mm, but with the largest size over 500 mm. The fill, which has been dumped and placed without compaction over the past 2 years, ranges from 2 to 8 m thick across the site. The bearing capacity of this fill was about 70 to 100 kPa. Dynamic compaction consisting of two high-energy passes and two low-energy passes were applied to improve the ground. The compaction energy of each high-energy pass was 3000 kN⋅m, and the grid spacing was 5 x 5 m. The compaction energies of the first and second low-energy passes were 1500 kN⋅m and 1000 kN⋅m, respectively. After the dynamic compaction, plate loading tests, field density tests, ground penetrating radar explorations, and other tests were performed. The tests show that the ultimate bearing capacity after improvement is over 440 kPa, the average secant elastic modulus is 34.50 MPa, the depth of influence of the dynamic compaction is at least 6 m, and the relative compaction is more than 95%. These values satisfied the design requirements for a building that was constructed on the fill after dynamic compaction. The building's foundation elements consist of reinforced concrete strip footings. The observed settlement of the building became stable rather quickly after construction, and the total building settlement was only 12 mm. Dynamic compaction effectively improved the fill in this mountainous area in China.
Dynamic Compaction of Fill in a Mountainous Area
Lu, Xin (author) / Filz, George (author) / Han, Jie (author)
U.S.-China Workshop on Ground Improvement Technologies 2009 ; 2009 ; Orlando, Florida, United States
Advances in Ground Improvement ; 281-289
2009-03-10
Conference paper
Electronic Resource
English
Dynamic Compaction of Fill in a Mountainous Area
| British Library Conference Proceedings | 2009
Reinforcing method for dynamic compaction gravel compaction pile in high fill area
| European Patent Office | 2024
Dynamic compaction construction method suitable for mountainous road
| European Patent Office | 2023
Dynamic Compaction Using Select Fill Displacement Methods
| British Library Conference Proceedings | 1993
Construction method and system for high-fill roadbed in mountainous area
| European Patent Office | 2023