丹江口大坝加高工程坝踵应力研究  

Study on Heel Stress of the Heightening Project of Danjiangkou Dam

作　　者：徐跃之[1] 陕亮[1] 肖汉江[1] 

机构地区：[1]长江科学院材料与结构研究所,武汉430010

出　　处：《南水北调与水利科技》2008年第2期8-10,25,共4页South-to-North Water Transfers and Water Science & Technology

基　　金："十一五"国家科技支撑计划重大项目南水北调工程若干关键技术研究与应用(2006BAB04A01)

摘　　要：通过数值模拟分析,以丹江口大坝加高前设计蓄水位157m时,在坝体自重、上游水压力及相应水位下的扬压力等荷载作用下的坝体应力作为"初始应力状态",分析加高后的坝踵应力是否恶化以及提高施工期水位对加高后坝踵应力的影响程度。分析认为:与"初始应力状态"相比,加高后当库水位升至校核洪水位174.6m时,各坝段坝踵应力出现不同程度的恶化。提高施工期水位,对深孔坝段和厂房坝段的坝踵应力(库水位提高到正常蓄水位170m及以上时)没有明显的不利影响,对左联35号坝和右联7号坝段的坝踵应力稍有不利影响。Through numerical value simulation and on the basis of the “initial stress state” under the pressure of the dam and the water of upper reaches and the uplift stress at the corresponding water level （The designed water storage level before heightening of the Danjiangkou Reservoir is 157m. ）, the paper analyzes the heel stress of the dam after heightening and the effect to the heel stress after heightening by increasing the water level during the construction period. Compared with the initial stress state, as the water level of the dam after heightening increases to 174. 6m （check flood level）, the heel stress of each section of the dam is worsened. According to the analysis, raising water level in the construction period has no obvious negative impact to the heel stress of the deep hole dam section and the factory building dam section （when the water level of the dam is increased to ≥170m） but slight negative impact to the heel stress of No, 35 dam section at the left and No, 7 dam section at right.

关 键 词：丹江口大坝 加高工程 坝踵应力 施工期水位 

分 类 号：TV331[水利工程—水工结构工程] TV642.3