CAJ | 학술논문

扬压力是复杂地基上重力坝承受的最主要的荷载之一，扬压力对于重力坝坝体与地基的安全及稳定性的影响不容忽视。为了在地质力学模型试验中模拟扬压力的作用，提出等效荷载模拟方法，并以某复杂地基上重力坝加固后的典型坝段溢流坝A坝段、非溢流坝B坝段为例，建立其实际荷载、等效荷载计算模型，基于ANSYS有限元三维数值模拟分析软件及地质力学模型试验分析研究等效荷载模拟方法的等效性。研究结果表明：有限元计算中实际模型、等效模型的坝体与地基变位、应力及最终塑性破坏区基本一致，且有限元计算与等效模型试验的最终超载安全系数及最终破坏形态基本一致，等效荷载模拟方法的等效性、合理性好，可应用于复杂地基上重力坝的研究；同时，以置换混凝土塞为主的加固方案效果良好，为工程加固处理提供了科学依据，同时对类似工程具有一定的参考价值。
양압력시복잡지기상중력패승수적최주요적하재지일，양압력대우중력패패체여지기적안전급은정성적영향불용홀시。위료재지질역학모형시험중모의양압력적작용，제출등효하재모의방법，병이모복잡지기상중력패가고후적전형패단일류패A패단、비일류패B패단위례，건립기실제하재、등효하재계산모형，기우ANSYS유한원삼유수치모의분석연건급지질역학모형시험분석연구등효하재모의방법적등효성。연구결과표명：유한원계산중실제모형、등효모형적패체여지기변위、응력급최종소성파배구기본일치，차유한원계산여등효모형시험적최종초재안전계수급최종파배형태기본일치，등효하재모의방법적등효성、합이성호，가응용우복잡지기상중력패적연구；동시，이치환혼응토새위주적가고방안효과량호，위공정가고처리제공료과학의거，동시대유사공정구유일정적삼고개치。
Uplift pressure is one of the main loads undertaken by a complex-foundation gravity dam ,and its impact on the body of a gravity dam as well as the safety and stability of the foundation shall not be neglected .To simulate uplift pressure's function in a geo‐mechanics model test ,equivalent load simulation approach is put forward ,and overflow dam section A# and non-overflow dam sec‐tion B# ,which are typical dam sections of a consolidated gravity dam on a complex foundation ,are taken for example .With the help of ANSYS and geomechanics model tests ,this paper does research on the equivalence of dam body and foundation's transforma‐tion and stability in the real load and equivalent load calculation model .It turns out that in the infinite element calculation ,the real model and the simulated model are basically consistent in terms of the transformation ,stress and plastic failure zone of the dam body and foundation .Besides ,these two models'results in final overload safety coefficient and final failure modes are also basically consist‐ent .Therefore ,it is safe to say equivalent load simulation is of high equivalence and rationality so that it can be applied to the re‐search on complex-foundation gravity dams .Meanwhile ,the consolidation plan of replacing concrete plug performs well .Consequent‐ly ,it offers a scientific basis for project consolidation and guide to similar projects .