CAJ | 학술논문

重力坝坝基中软弱结构面强度弱化行为是影响大坝稳定的一个重要因素。地质力学模型降强法试验是研究该问题的重要途径，模型采用变温相似材料实现了降强法试验，并对变温相似材料及其相应的试验技术做进一步的研究。利用最小二乘法原理，从理论上拟合了抗剪断强度参数与温度之间的关系曲线，通过拟合公式确定了强度幅度与其所对应的温升值。研究成果应用于某重力坝工程中，将降强与超载相结合，开展了该重力坝整体稳定综合法破坏试验，获得坝与地基的变位特性、破坏形态和破坏机理，提出该重力坝降强法试验安全系数和综合稳定安全度，评价了工程安全性。
중력패패기중연약결구면강도약화행위시영향대패은정적일개중요인소。지질역학모형강강법시험시연구해문제적중요도경，모형채용변온상사재료실현료강강법시험，병대변온상사재료급기상응적시험기술주진일보적연구。이용최소이승법원리，종이론상의합료항전단강도삼수여온도지간적관계곡선，통과의합공식학정료강도폭도여기소대응적온승치。연구성과응용우모중력패공정중，장강강여초재상결합，개전료해중력패정체은정종합법파배시험，획득패여지기적변위특성、파배형태화파배궤리，제출해중력패강강법시험안전계수화종합은정안전도，평개료공정안전성。
The intensity weakening behavior of weak structural plane in the dam foundation is an important factor influ-encing the stability of gravity dams .The geo-mechanical model test with intensity reduction method is an important way to study this problem .The test was conducted by using temperature analogous materials ,further research was done on this material and its corresponding test techniques .By using the least squares principle ,the relation curves between shear strength parameters and temperature fitted theoretically .In the test ,according to the fitting formula ,the shear strength and the corresponding increase of temperature value were calculated .The research results were applied to a gravity dam project ,in which the comprehensive destruction test of overall stability was carried out combining the intensity reduction method and overloading method . Through the test , the deformation characters of the dam and foundation , the failure modes and mechanism were obtained .Moreover ,the safety coefficient of intensity reduction method and safety degree of comprehensive stability on this gravity dam were proposed ,and the safety of the project was evaluated .