混凝土
混凝土
혼응토
CONCRETE
2014年
10期
38-40
,共3页
混凝土%剩余强度%服役桥梁%实时%疲劳特性
混凝土%剩餘彊度%服役橋樑%實時%疲勞特性
혼응토%잉여강도%복역교량%실시%피로특성
concrete%residual strength%in-service bridge%real-time%fatigue property
随着超重车辆的大量出现，混凝土桥梁的疲劳问题越来越受到重视，然而，现有的混凝土剩余强度损伤模型因参数和影响因素众多不便于运用于实际环境条件下的混凝土桥梁，基于此从循环次数和应力水平两种因素出发，吸收借鉴已有的经验教训，提出了新的适用于服役混凝土桥梁的实时剩余强度损伤模型，该模型不受加载顺序的影响，也不需要事先知道混凝土的疲劳特性，经检验效果较好。
隨著超重車輛的大量齣現，混凝土橋樑的疲勞問題越來越受到重視，然而，現有的混凝土剩餘彊度損傷模型因參數和影響因素衆多不便于運用于實際環境條件下的混凝土橋樑，基于此從循環次數和應力水平兩種因素齣髮，吸收藉鑒已有的經驗教訓，提齣瞭新的適用于服役混凝土橋樑的實時剩餘彊度損傷模型，該模型不受加載順序的影響，也不需要事先知道混凝土的疲勞特性，經檢驗效果較好。
수착초중차량적대량출현，혼응토교량적피로문제월래월수도중시，연이，현유적혼응토잉여강도손상모형인삼수화영향인소음다불편우운용우실제배경조건하적혼응토교량，기우차종순배차수화응력수평량충인소출발，흡수차감이유적경험교훈，제출료신적괄용우복역혼응토교량적실시잉여강도손상모형，해모형불수가재순서적영향，야불수요사선지도혼응토적피로특성，경검험효과교호。
With a large number of overweight vehicles,the fatigue of concrete bridges has been paid more and more attention,however, the existing concrete damage model of residual strength was not convenient to be applied under the practical environment ,due to numer-ous parameters and influencing factors.So a new damage model of real-time residual strength for concrete bridge was proposed by absorb-ing the existing experience and lessons and only considered two factors that are cycle index and stress level.This model was not affected by loading sequence and didn't need to know the fatigue properties of concrete.Finally the model is better through the test.
