预应力钢纤维混凝土空心板受力性能试验研究  

Experimental study on mechanical behavior of prestressed steel fiber reinforced concrete hollow slab

作　　者：许成祥[1] 马进军[1] 

机构地区：[1]长江大学城市建设学院,湖北荆州434023

出　　处：《混凝土》2010年第5期114-116,共3页Concrete

基　　金：建设部科学技术项目(06-K1-41);湖北省建设科技项目(K200509)

摘　　要：针对预应力混凝土空心板制作和使用过程中容易出现裂缝的问题,提出在预应力空心板制作中应用钢纤维混凝土,形成新型材料构件-预应力钢纤维混凝土空心板。设计了不同钢纤维掺量的7块预应力钢纤维混凝土空心板,对其进行受力性能试验。试验表明,预应力钢纤维混凝土空心板与普通预应力钢筋混凝土空心板破坏形态相似,钢纤维的掺入可以有效提高混凝土空心板的抗裂性能和极限承载力,减小构件反拱,提高其抗弯性能。Aiming to solve the cracking problems in prestressed hollow slab,prestressed steel fiber reinforced concrete hollow slab was put for- ward,which applied advanced concrete material to prestressed hollow slab.Experimental research was carried out on seven specimens with differ- ent steel fiber mixing amount,the study includes mechanical character,stress distribution,crack development,failure mode and ductility.The re- sult indicates that failure process of prestressed steel fiber reinforced concrete hollow slab is similar to ordinary prestressed hollow slab.The added steel fiber can improve crack resistance capacity and bearing capacity,reduce inverted arch value.

关 键 词：预应力钢纤维混凝土 空心板 受力性能 

分 类 号：TU528.7[建筑科学—建筑技术科学]