福建建设科技
福建建設科技
복건건설과기
FUJIAN CONSTRUCTION SCIENCE & TECHNOLOGY
2012年
5期
30-32
,共3页
部分再生混凝土%T形截面%叠合梁%受弯性能
部分再生混凝土%T形截麵%疊閤樑%受彎性能
부분재생혼응토%T형절면%첩합량%수만성능
Partial recycled concrete%T- shaped cross section%superposed beam%flexural behavior
通过4根部分再生混凝土T形截面叠合梁和1根普通混凝土T形截面叠合梁受弯试验结果的对比分析,研究了各试验梁荷载作用下跨中正截面的受荷性能及极限破坏形态。试验结果表明,部分再生混凝土T形截面叠合梁的受力性能及破坏机理与普通混凝土类似;混凝土梁正截面的平截面假定依然成立;随再生骨料取代率的增加,试验梁的开裂荷载及极限承载力均略有降低。
通過4根部分再生混凝土T形截麵疊閤樑和1根普通混凝土T形截麵疊閤樑受彎試驗結果的對比分析,研究瞭各試驗樑荷載作用下跨中正截麵的受荷性能及極限破壞形態。試驗結果錶明,部分再生混凝土T形截麵疊閤樑的受力性能及破壞機理與普通混凝土類似;混凝土樑正截麵的平截麵假定依然成立;隨再生骨料取代率的增加,試驗樑的開裂荷載及極限承載力均略有降低。
통과4근부분재생혼응토T형절면첩합량화1근보통혼응토T형절면첩합량수만시험결과적대비분석,연구료각시험량하재작용하과중정절면적수하성능급겁한파배형태。시험결과표명,부분재생혼응토T형절면첩합량적수력성능급파배궤리여보통혼응토유사;혼응토량정절면적평절면가정의연성립;수재생골료취대솔적증가,시험량적개렬하재급겁한승재력균략유강저。
This paper mainly discussed the experimental comparison of the flexural behavior of four partial recycled concrete T - shaped cross -section superposed beams and one natural aggregate concrete T- shaped cross -section superposed beam. The results showed that the features of the flexural mechanism of these partial recycled aggregate concrete beams are basically similar to that of the natural aggregate concrete test beams ; the plane section assumption of normal section of the recycled concrete beams is applicable ; with the increasing of recycled aggregate replacement ratio, the cracking load and the ultimate bearing capacity of the beams is slightly lower.
