打擊樁受側向載重之行為評估

伍耀緯

doi:10.6840/CYCU.2014.00083、10.6840/cycu201400087

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打擊樁受側向載重之行為評估

Evaluation of Lateral Behavior for Driven Piles

伍耀緯 , Masters　　Advisor：陳逸駿　　

繁體中文 DOI： 10.6840/CYCU.2014.00083、10.6840/cycu201400087

打擊樁；側向載重試驗；張氏簡易分析法； p-y curve分析法；詮釋法； interpretation criteria ； lateral capacity ； Y-L Chang analysis method ； p-y curve analysis ； driven piles ； lateral load tests

Abstract │ Reference (42) │ Times Cited (2) │ Altmetrics

Abstract 〈TOP〉

Parallel Abstract 〈TOP〉

This study is focused on the evaluation of behavior for driven piles under lateral loading. Tests from Taiwan and foreign countries are utilized to assess the lateral interpretation criteria and capacity prediction of the driven piles. The data are subdivided into drained and undrained loading soil conditions as well as three types of driven piles: round and square sections precast concrete piles and steel pipe piles.
For interpreted capacity, various theoretical bases of interpretation criteria were used for the assessment. Based on the evaluation of different interpretation criteria, statistical results indicate that the hyperbolic method presents the highest value. For round precast concrete piles under drained and undrained soils, the lateral or moment limit method is 0.71QH and 0.47QH, respectively, while the Slack and Walker method is in the range of 0.41QH-0.53QH. Comparing the drilled shafts and driven piles, the load-displacement of precast concrete square piles in drained soils under the same loading produces a smaller amount of displacement. These results show that the pile lateral force in square piles is larger than in circular piles. In addition, the load-displacement curves of rigid shafts show faster capacity mobilization than other driven piles in undrained soils.
 The LPILE program (p-y curve analysis) and Y-L Chang analysis method are used to evaluate lateral capacity. From the statistical results, the p-y curve analysis with triaxial tensile test parameter is larger than p-y curve analysis with triaxial compression test parameter. However, the analysis results of p-y curve analysis with triaxial tensile test parameter are more consistent with the measured results. The Y-L Chang analysis results present larger difference as compared with measured results. The difference is small only in horizontal displacement at 20 mm for drained soils and 10 mm for undrained soils. 
Specific design recommendations are given for the use of lateral interpretation criteria and capacity prediction analysis of driven piles. These design recommendations are also given with the appropriate statistics to describe the quality of these recommended models.

Reference ( 42 ) 〈TOP〉

1. Bierschwale, MW, Coyle, HM and Bartoskewitz, RE (1981). “Lateral Load Tests on Drilled Shafts”, Drilled Piers and Caissons, ASCE, 98-113.
連結：
5. Carter, JP and Kulhawy, FH (1992). “Analysis of Lateral Loaded Shafts in Rock”, Journal of Geotechnical Engineering, ASCE, 118, 6, 839-855.
連結：
8. Chen, YJ and Lee, YS (2010). “Evaluation of Lateral Interpretation Criteria for Drilled Shaft Capacity”, Journal of Geotechnical and Geoenvironmental Engineering, ASCE, 136(8), 1124-1136.
連結：
9. Chen, YJ, Lin, SW and Kulhawy, FH (2011). “Evaluation of Lateral Interpretation Criteria for Rigid Drilled Shafts”, Canadian Geotechnical Journal, 48(4), 634-643.
連結：
13. Honjo, Y, Zaika, Y and Pokharel, G (2005). “Estimation of Subgrade Reaction Coefficient for Horizontally Loaded Piles by Statistical Analyses”, Soils and Foundations, 45(3), 51-70.
連結：

Times Cited (2) 〈TOP〉

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