CAJ | 학술논문

以溪洛渡水电站泄洪洞无压段为例，基于有限元分析软件ANSYS ，模拟衬砌混凝土的浇筑过程和温控措施，计算分析了不同围岩特性下衬砌混凝土的温度和温度应力的发展变化规律。通过分析比较代表点最高温度、最大内表温差、不同点位最大拉应力等，研究围岩特性的变化对衬砌混凝土温度和温度应力的影响。结果表明：①在温控措施相同的情况下，围岩特性的变化对衬砌混凝土的温度场影响很小。②围岩弹性模量越大，对混凝土的约束越强，后期拉应力越大，对温控防裂的要求也越严格。计算成果为地下工程衬砌混凝土温控分析提供参考。
이계락도수전참설홍동무압단위례，기우유한원분석연건ANSYS ，모의츤체혼응토적요축과정화온공조시，계산분석료불동위암특성하츤체혼응토적온도화온도응력적발전변화규률。통과분석비교대표점최고온도、최대내표온차、불동점위최대랍응력등，연구위암특성적변화대츤체혼응토온도화온도응력적영향。결과표명：①재온공조시상동적정황하，위암특성적변화대츤체혼응토적온도장영향흔소。②위암탄성모량월대，대혼응토적약속월강，후기랍응력월대，대온공방렬적요구야월엄격。계산성과위지하공정츤체혼응토온공분석제공삼고。
Taking non-pressure spillway tunnels of Xiluodu Hydropower as an example ,pouring process and temperature control measures are simulated based on the finite element software ANSYS .The development and change rule of temperature and thermal stress of the lining concrete under different elastic modulus of surrounding rock are calculated and analyzed .By comparing the maxi-mum temperature ,maximum temperature difference between inner and surface and maximum tensile stress of different representative point ,the effects of the change of elastic modulus of surrounding rocks and lining thickness are studied .The results show that :①When the temperature control measures are the same ,the variation of wall rocks'peculiarity has little impact on temperature field of lining concrete .② The greater elastic modulus of wall rocks ,the greater restraint to concrete ,the greater the maximum tensile stress in the late ,the stricter the temperature control requirements are .The results can provide a reference for the analysis of con-crete crack control in practical projects .The results can provide a reference for the simulation of temperature control of underground engineering lining concrete .