Research on the Self-balanced Method of Pile Bearing Capacity Considering Soil Continuity and Engineering Test

doi:10.12068/j.issn.1005-3026.2022.09.016

Abstract

Abstract: The self-balanced test pile method is gradually popularized due to its convenience and economy. However， few studies were focused on the conversion coefficient involved in the process of converting this method into the static load-displacement curve. Because the settlement on the pile top is affected by soil continuity， the displacement difference on the pile top of the self-balanced test pile and the static load pile were analyzed using the Mindlin′s formula based on the comparative study of the self-balanced test pile method and the traditional vertical compression static load test method of single pile. An equivalent conversion method to determine the bearing capacity of self-balanced test pile was proposed in order to improve the empirical formula. The rationality of the improved method was verified by indoor simulation test as well as pile foundation engineering test of a super high-rise building in Shenyang. It is found that the self-balance conversion method taking the soil continuity in to account can significantly reduced the fitting error of the load-displacement curve.

Key words: pile foundation; soil continuity; stack method; self-balanced method; bearing capacity

CLC Number:

TP20

WANG Shu-hong， SHI Yun-hao， ALIPUJIANG Jierula， JIANG Jian-hui. Research on the Self-balanced Method of Pile Bearing Capacity Considering Soil Continuity and Engineering Test[J]. Journal of Northeastern University(Natural Science), 2022, 43(9): 1329-1336.

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