CAJ | 학술논문

介绍了倾斜管桩牵引纠偏的内力弱化技术，为了分析影响牵引纠偏技术的因素，首先拟合现场实测数据得到土层及桩体的合理参数，然后采用数值模拟手段分析了土体弱化深度、纠偏速率及土体性质对纠偏效果的影响。计算结果表明，随着弱化深度的增加桩身弯矩逐渐减小，且最大弯矩所在位置逐渐往桩底移动，当弱化深度为1～3 m，时桩身弯矩的降低最为明显。纠偏速率越大桩身产生的弯矩就越大，速率太小则影响工期，故推荐5 cm ／h 为佳。土体强度的提高则会增加桩身弯矩，但是随着土体弱化深度的增加，桩身弯矩的降低程度也较土体强度低的明显。
개소료경사관장견인규편적내력약화기술，위료분석영향견인규편기술적인소，수선의합현장실측수거득도토층급장체적합리삼수，연후채용수치모의수단분석료토체약화심도、규편속솔급토체성질대규편효과적영향。계산결과표명，수착약화심도적증가장신만구축점감소，차최대만구소재위치축점왕장저이동，당약화심도위1～3 m，시장신만구적강저최위명현。규편속솔월대장신산생적만구취월대，속솔태소칙영향공기，고추천5 cm ／h 위가。토체강도적제고칙회증가장신만구，단시수착토체약화심도적증가，장신만구적강저정도야교토체강도저적명현。
A technology to release the internal force in order to correct the inclined pile was introduced in this paper.To analyze the impact factors of the correction technology,soil and pile were investigated based on the field testing.Numerical simulation was used to analyze the effects of the release depth,correction rate and soil characteristic.Results show that the moment of pile decreases with the increase of the release depth and the location for the maximum moment gradually moves toward the end of pile.As the releasing depth is set to 1 m to 3 m,the moment reduction is most obvious.A larger correction rate can generate a greater moment,5 cm /h is recommended as an optimal rate.Improving of soil strength can increase the pile moment but with the increase of the release depth,the moment reduction margin is more obvious than the low-strength soil.