CAJ | 학술논문

高填方涵洞土压力受多种因素的影响。在对高填方涵洞受力影响因素归纳的基础上，筛选出埋设涵洞的沟谷宽度、沟谷边坡角度、地基土模量、填土模量、填土黏聚力和内摩擦角这6个主要影响因素，通过数值模拟对涵顶土压力系数的变化规律进行了分析，确定了上述6个因素产生有效影响的取值区间。根据正交试验原理，建立25个正交化数值模拟试验模型，针对上述6个主要影响因素，对高填方涵洞进行了影响因素敏感性分析，最后的极差分析结果表明，埋设涵洞的沟谷宽度和沟谷边坡角度是影响高填方涵洞涵顶土压力的最为主要和敏感的因素；填土模量、填土内摩擦角和地基模量对涵顶土压力有较显著影响；填土的黏聚力对涵顶土压力影响较小。
고전방함동토압력수다충인소적영향。재대고전방함동수력영향인소귀납적기출상，사선출매설함동적구곡관도、구곡변파각도、지기토모량、전토모량、전토점취력화내마찰각저6개주요영향인소，통과수치모의대함정토압력계수적변화규률진행료분석，학정료상술6개인소산생유효영향적취치구간。근거정교시험원리，건립25개정교화수치모의시험모형，침대상술6개주요영향인소，대고전방함동진행료영향인소민감성분석，최후적겁차분석결과표명，매설함동적구곡관도화구곡변파각도시영향고전방함동함정토압력적최위주요화민감적인소；전토모량、전토내마찰각화지기모량대함정토압력유교현저영향；전토적점취력대함정토압력영향교소。
The earth pressure of high embankment culvert is influenced by many internal and external factors. Based on the induction of factors influence the earth pressure on high embankment culvert, the valley width, slope angle, substrate soil modulus, modulus, cohesion and internal friction angle of embankment fill are screened out as the 6 main influencing factors. The variations of coefficient of earth pressure on the crown of culvert are analyzed via numerical simulation, and the range of the factors have effective influence on the earth pressure are determined. According to the principle of orthogonal test, 25 numerical models are installed for the analysis of the sensitivity of influence factors on the earth pressures on high embankment culvert. The results show that, the width and slope angle of the trench are the most important and sensitive factors for the earth pressures on the crown of the high embankment culvert. The modulus and friction angle of the backfill, as well as the subgrade modulus have secondary significant effect on the earth pressure. However the cohesion of the backfill has little effect on the earth pressure.