CAJ | 학술논문

深入分析了岩溶区基桩的承载机理及侧阻端阻的传递规律,建立了合理基桩侧阻端阻荷载传递模型,该模型可充分考虑桩周岩土体的加工软化和加工硬化型土的不同特性及桩端沉渣对基桩承载力的影响.在此基础上,根据桩侧土(岩)与桩端岩层阻力的发挥程度,推导得出了桩顶沉降量与桩顶荷载之间的关系式,从而通过桩顸沉降量来确定岩溶区基桩的竖向承载力.最后,结合自平衡静载试验,对理论方法进行了验证.实测荷载一沉降曲线与理论曲线吻合良好.
심입분석료암용구기장적승재궤리급측조단조적전체규률,건립료합리기장측조단조하재전체모형,해모형가충분고필장주암토체적가공연화화가공경화형토적불동특성급장단침사대기장승재력적영향.재차기출상,근거장측토(암)여장단암층조력적발휘정도,추도득출료장정침강량여장정하재지간적관계식,종이통과장한침강량래학정암용구기장적수향승재력.최후,결합자평형정재시험,대이론방법진행료험증.실측하재일침강곡선여이론곡선문합량호.
First, the bearing mechanism of piles in karst and load transfer regularity of side friction along the pile were analysed, and the rational load transfer models were established with consideration of the influences of the different behaviors of work-sorting or work-hardening soil (rock) and slime at the pile bottom on the bearing capacity of piles in karst. On this basis, the relation between the settlement of pile top and the vertical bearing capacity of pile was deducted according to the development degree of the resistance force of soil (rock) along the pile and the end resistance at the bottom, so the vertical bearing capacity of piles can be determined by the allowable settlement of pile top. Finally, the theoretical method was verified by serf-balance static loading test. The result shows a good agreement between theoretical curve and measured curve.