Study on large-scale in-situ immersion static load test for bearing behavior of collapsible loess pile foundation

Author

Jin Wei ; Zhe Li

Author_Institution

Sch. of Highway, Chang´an Univ., Xi´an, China

Volume

5

fYear

2011

fDate

12-14 Aug. 2011

Firstpage

2544

Lastpage

2547

Abstract

Large-scale in-situ immersion static load test has been conducted on bored piles (pile diameter: 0.8m, pile length: 18m, side length of immersion pit: 20m) at self-weight collapsible loess site combining Xi´an East Second Ring Road-North Second Ring Road Overpass Project which is a project funded by World Bank loan. Based on static load test of pile foundation in overpass project without immersion, before immersion and after immersion and comparative analysis of ultimate bearing capacity and settlement of pile foundation, this paper analyzes strength value of negative friction resistance of pile foundation and its distribution law. Research results have important theoretical value and guiding significance for the design and construction of bridge pile foundation in loess area.

Keywords

bridges (structures); design engineering; foundations; friction; mechanical strength; mechanical testing; project management; structural engineering; World Bank loan; Xi´an; bored piles; bridge pile foundation; collapsible loess pile foundation bearing behavior; east second ring road-north second ring road overpass project; friction resistance; large-scale in-situ immersion static load testing; Friction; Immune system; Loading; Moisture; Resistance; Silicon; Soil; cast-in-place pile; negative friction resistance; pile foundation bearing behavior; self-weight collapsible loess; static load test;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronic and Mechanical Engineering and Information Technology (EMEIT), 2011 International Conference on

Conference_Location

Harbin, Heilongjiang, China

Print_ISBN

978-1-61284-087-1

Type

conf

DOI

10.1109/EMEIT.2011.6023618

Filename

6023618