CAJ | 학술논문

斜坡上的基桩具有承重和阻滑的双重功能，其受力变形性状远比平地上的情形复杂。采用模型试验和数值模拟相结合的方法研究了其水平承载特性及影响因素。模型试验结果表明：临坡距对基桩的水平承载变形性能有较大影响。同一级荷载下，临坡距较大的桩身水平位移小于临坡距较小的基桩；临坡距较大基桩的临界荷载和极限承载力也大于临坡距小的基桩。数值模拟研究结果表明：基桩水平极限承载力随着斜坡坡比的增大而减小，随着临坡距的增大而增大，与模型试验的结果基本一致。对比分析了斜坡和平地基桩水平承载变形性能的差别，得出了可考虑坡比和临坡距的斜坡基桩水平极限承载力简便计算方法，可为有关规范的修订以及工程设计提供参考。
사파상적기장구유승중화조활적쌍중공능，기수력변형성상원비평지상적정형복잡。채용모형시험화수치모의상결합적방법연구료기수평승재특성급영향인소。모형시험결과표명：림파거대기장적수평승재변형성능유교대영향。동일급하재하，림파거교대적장신수평위이소우림파거교소적기장；림파거교대기장적림계하재화겁한승재력야대우림파거소적기장。수치모의연구결과표명：기장수평겁한승재력수착사파파비적증대이감소，수착림파거적증대이증대，여모형시험적결과기본일치。대비분석료사파화평지기장수평승재변형성능적차별，득출료가고필파비화림파거적사파기장수평겁한승재력간편계산방법，가위유관규범적수정이급공정설계제공삼고。
The foundation pile in the slope soil has the dual function of load-bearing and slip resistance. The horizontal force character of it is more complex than the pile in the flat ground. Numerical experiments and model tests are used to study bearing characters and influence factor. Results of the model test show that the distance from the top of the slope has a great impact on horizontal bearing deformation properties of the pile. Under the same level of the load, the horizontal displacement of the pile with a bigger distance is less than that of the pile with a smaller distance. The critical load and ultimate bearing capacity of the pile with a bigger distance is larger than that of the pile with a smaller distance. The result of numerical simulation shows that the horizontal ultimate bearing capacity decreases with the increase of the slope ratio and increases with the growth of the distance from the top of the slope, which is same as the result of model tests. Differences between horizontal bearing deformation properties of piles in the slope and piles in the flat ground are discussed and the calculation method of horizontal bearing capacity of pile in the slope is developed, which can provide a reference to specification revision and engineering design.