砂土中梅花型桩水平承载特性
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中图分类号：TU473 文献标志码：A 文章编号：1000-582X（2025）08-014-14
Bearing characteristics of plum-blossom pile under lateral loadsinsand
DENG Yousheng，LI Long，ZHAO Huiling，ZHANG Keqin （School of Architecture and Civil Engineering，Xi'an University of Science and Technology， Xi'an 710054，P.R.China）
Abstract： Plum-blossom pile is anovel kind of new cross-sectional shaped pile，and at present， there is no relevant research on the bearing characteristics of plum-blossom pile under lateral load.Based on the theory of circular hole expansion，the calculation method of soil displacement around plum-blossom pile in sand during pile sinking is established.With considering the special-shaped effect of plum-blossom pile section，the soil squeezing displacement in the positive direction of coordinateaxis is obtained byusing the principle of coordinate transformation and superpositionon the basis of Hooke’s law.The diferential equation of pile deflection curve is derived by using m methodand its diference solution，and the reliabilityof the establised theoretical method is verified by comparing with the experimental results.The results show that the horizontal displacement of soil betweenplum-blossom pile and circular pile with equalcros-section is similar. With the increaseof horizontal load，the horizontaldisplacement firstincreases andthendecreases，and the horizontaldisplacementof soil near plum-blossom pile is about 73.5% of that of circular pile with equal cross-section. The vertical squeezing force of plum-blossom pile on the soil facing surface under horizontal load issmall，and the vertical displacement fluctuates with the increaseofhorizontal load.Withthe increase of horizontal load，the horizontal displacementof soil in the middle of plum-blossom pile first increases and then decreases，and the maximum horizontal displacement is about 75% of that of circular pile with equal cross section.
Keywords： plum-blossom pile;bearing characteristics; lateral loads;m method; model test
在"十四五"规划的战略背景下，中国基础设施建设快速发展。（剩余16275字）