CAJ | 학술논문

由于高填方渠道的截面形式(填高H、坡比i)对填筑体与地基层的附加应力具有较大影响；借助ANSYS有限元，建立截面形式可变的计算模型，发现高填方渠道填筑体中心线上各土层真实的附加应力P低于理论值γH，提出高填方渠道填筑体附加应力修正系数K与地基层附加应力比KP，并明确填筑体的坡比i、高宽比NH对其附加应力修正系数K的影响规律，以及坡比i、高宽比NH、相对深度NZ对地基中附加应力比KP的影响规律，据此，建立适用于高填方渠道填筑体与地基层附加应力的计算方法；研究结果表明，通过本文建立的附加应力计算方法，仅需知道渠道填筑体的坡比i、顶宽a、填高H、重度γ等关键参数，便可准确合理地计算出高填方渠道中心线上，各填土层的附加应力P与地基层中不同深度Z处的附加应力Pz，这对高填方渠道沉降过程的计算具有一定的实际意义。
유우고전방거도적절면형식(전고H、파비i)대전축체여지기층적부가응력구유교대영향；차조ANSYS유한원，건립절면형식가변적계산모형，발현고전방거도전축체중심선상각토층진실적부가응력P저우이론치γH，제출고전방거도전축체부가응력수정계수K여지기층부가응력비KP，병명학전축체적파비i、고관비NH대기부가응력수정계수K적영향규률，이급파비i、고관비NH、상대심도NZ대지기중부가응력비KP적영향규률，거차，건립괄용우고전방거도전축체여지기층부가응력적계산방법；연구결과표명，통과본문건립적부가응력계산방법，부수지도거도전축체적파비i、정관a、전고H、중도γ등관건삼수，편가준학합리지계산출고전방거도중심선상，각전토층적부가응력P여지기층중불동심도Z처적부가응력Pz，저대고전방거도침강과정적계산구유일정적실제의의。
Due to the section form of the high filling channels has a great influence on the additional stress of filling body and foundation. A mechanism that the real additional stress below the theoretical value of each soil layer at the center line of high filling channel′s filling body was uncovered through the ANSYS FEM,after a calculation model with a variable section form was established. The additional stress correction coefficient of the filling body and additional stress ratio of the foundation in the high filling channels were proposed. The effects of the filling body′s slope ratio and high aspect ratio to its additional stress correction coefficient and the slope ratio, high aspect ratio and relative depth to the foundation′s additional stress ratio were both clarified. And a calculation method for the additional stress of the filling body and the foundation of the high filling channels was established accordingly. The study result shows that,it could easily and accurately calculated out the additional stress of each filled soil and the additional stress of different depths in the foundation at the center line of the channels by the calculation method,which only needed to know the slope ratio,top width, filling height,and specific weight of the filling body. And it has an important guiding significance to calculate the settlement process for the high filling channels in the North Water Transfer Project.