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 Lateral loading test results on single and groups of soil-cement columns
Tác giả hoặc Nhóm tác giả: Do Huu Dao - Nguyen Minh Hai
Nơi đăng: © 2018 American Society of Civil Engineers - IFCEE 2018 - Online; Số: ISBN: 9780784481592.038;Từ->đến trang: 385-393, doi.org/10.1061/9780784481592.038;Năm: 2018
Lĩnh vực: Kỹ thuật; Loại: Bài báo khoa học; Thể loại: Quốc tế
TÓM TẮT
This paper presents lateral loading test results on single soil-cement columns and groups of soil-cement columns for supporting foundation of high-rise buildings. The soil profile consists of a silty sand layer with 9 m thickness and underlain by clay layer. The soil-cement columns were 600-mm diameter and constructed into 7 m depth below ground surface by deep wet mixing method. Twenty days after construction, the static loading tests were performed on two single columns, the 3-column group and the 5-column group. The maximum test loads and movements ranged from 128 through 413 kN and 23 through 30 mm, respectively. The 28-days compression strength of columns was about 5.5 MPa. The correlation between single columns and the groups showed group factors of about 0.8 and 0.6 for the 3-column and 5-column group, respectively. The test results provides compelling evidences that the lateral bearing capacity of the soil-cement columns is adequate to support foundation of high-rise buildings.
ABSTRACT
This paper presents lateral loading test results on single soil-cement columns and groups of soil-cement columns for supporting foundation of high-rise buildings. The soil profile consists of a silty sand layer with 9 m thickness and underlain by clay layer. The soil-cement columns were 600-mm diameter and constructed into 7 m depth below ground surface by deep wet mixing method. Twenty days after construction, the static loading tests were performed on two single columns, the 3-column group and the 5-column group. The maximum test loads and movements ranged from 128 through 413 kN and 23 through 30 mm, respectively. The 28-days compression strength of columns was about 5.5 MPa. The correlation between single columns and the groups showed group factors of about 0.8 and 0.6 for the 3-column and 5-column group, respectively. The test results provides compelling evidences that the lateral bearing capacity of the soil-cement columns is adequate to support foundation of high-rise buildings.
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