CAJ | 학술논문

利用临界滑动场法计算了浅埋圆形基础的地基承载力，并提供了系数 Nγ、Nq 和 Nc 的计算表格和曲线，同时分析了侧面土压力对 Nγ、Nq 的影响。通过建立土体条块极限平衡方程，推导了计算地基承载力的递推关系式。首先，设定土体计算范围，并划分条块和设置状态点；其次，根据递推公式和推力极值原理计算各个状态点的参数，并搜索临界滑面；最后，根据搜索出的临界滑面计算地基承载力。通过与已有系数计算值或模型试验的比较，验证了该方法的合理性。研究结果表明：Nγ、Nq 和 Nc 与其他学者的计算值相近；相同情况下侧面土压力越大系数 Nγ、Nq 越小。该方法是临界滑动场法在地基承载力研究中的推广应用，原理简单、易于编程，可为深入研究圆形基础地基承载力的计算提供参考。
이용림계활동장법계산료천매원형기출적지기승재력，병제공료계수 Nγ、Nq 화 Nc 적계산표격화곡선，동시분석료측면토압력대 Nγ、Nq 적영향。통과건립토체조괴겁한평형방정，추도료계산지기승재력적체추관계식。수선，설정토체계산범위，병화분조괴화설치상태점；기차，근거체추공식화추력겁치원리계산각개상태점적삼수，병수색림계활면；최후，근거수색출적림계활면계산지기승재력。통과여이유계수계산치혹모형시험적비교，험증료해방법적합이성。연구결과표명：Nγ、Nq 화 Nc 여기타학자적계산치상근；상동정황하측면토압력월대계수 Nγ、Nq 월소。해방법시림계활동장법재지기승재력연구중적추엄응용，원리간단、역우편정，가위심입연구원형기출지기승재력적계산제공삼고。
The bearing capacity of circular footing is studied using critical slip field method.The three factors under different earth pressures are presented in the form of tables and curves.Recursion formula is deduced according to the force equilibrium conditions of slice.Firstly,the soil in the calculation range that had been assumed previously can be divided into a series of slices and state points.Secondly,the parameters of all the points are calculated according to the recursion formula and thrust force extremum principle and the critical slip surface can be obtained subsequently using the parameters.Lastly,the bearing capacity is calculated according to the critical slip surface.The comparison with other methods verifies its rationality.The results show that the three factors are similar to others and decrease with increasing of soil pressure.The method is a use of critical slip field method in the calculation of bearing capacity.It is easy to be understood and calculated and can provide some beneficial references for further research on bearing capacity for circular footing.