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探讨了荷载和冻融两种损伤因素同时作用下高强混凝土（ＨＳＣ）和钢纤维高强混凝土（ＳＦＲＨＳＣ）的性能。试验中对试件三分点加荷受弯的同时进行冻融循环，荷载比例为０、１０％、２５％、５０％，并进行了掺与不掺钢纤维的比较。试验结果和分析表明，荷载越大，混凝土能承受的冻融循环次数越少，相对动弹性模量下降也越快。钢纤维的掺入，使得混凝土能承受的冻融循环次数增加很多，并有效抑制了动弹性模量的下降。不同试件，不同破坏阶段，起主导作用的损伤因子不同。双损伤因素作用下混凝土的损伤速度远大于两种因素单独作用下损伤速度的简单叠加。
The performance of high-strength concrete (HSC) and steel fiber reinforced high-strength concrete (SFRHSC) under simultaneous load and freezing-thawing two damage factors was discussed. In the test, the three-point point of the specimen was loaded and bent while being subjected to freeze-thaw cycles. The load ratios were 0, 10%, 25%, and 50%, and the comparison of the steel fiber blended with undoped steel was performed. Test results and analysis show that the greater the load, the less the number of freeze-thaw cycles the concrete can withstand and the faster the relative dynamic elastic modulus decreases. The incorporation of steel fibers increases the number of freeze-thaw cycles that concrete can withstand, and effectively suppresses the decline in dynamic elastic modulus. Different specimens and different damage stages have different damage factors that play a leading role. The damage rate of concrete under the double damage factor is much greater than the simple superposition of the damage rate under the two factors alone.