- 金鴻鑫，陸 琨，陶 忠，房 強，何穎成
引用本文摘 ? 要：對矩形肋疊合板構件和T形肋疊合板構件進行了均布加載試驗，研究了各構件在受力過程中剛度、跨中撓度和裂縫的變化規律，對比分析了各部件的荷載-應變曲線，并得到了構件的開裂荷載和極限承載力。結果表明：疊合板件的力學性能受底板肋部形式的影響較大；相同跨度下，T形肋疊合板件的受力性能優于矩形肋疊合板件；兩種肋形式的疊合板件均為受彎破壞，延性良好。T形肋預制底板的有限元分析結果表明，增加T形肋的腹板高度可明顯提高構件的抗彎承載力；構件肋孔間的混凝土出現水平方向的貫通裂縫，表明肋孔間混凝土的破壞形式主要為剪切型破壞。 Abstract: Uniform loading tests were carried out on rectangular rib and T-shaped rib composite plates respectively, and the variation laws of stiffness, mid span deflection and cracks of each component during the loading process were studied, and the load-strain curves of each component were compared and analyzed, and the cracking load and ultimate bearing capacity of the component were obtained. The results show that the mechanical properties of the composite plates are greatly affected by the rib form of the bottom plate. Under the same span, the mechanical performance of T-shaped rib is better than that of rectangular rib. The composite plates with two kinds of ribs are flexural failure and have good ductility. The finite element analysis results of T-shaped rib precast floor show that increasing the web height of T-shaped rib can significantly improve the flexural capacity of the component. Horizontal through cracks appear in the concrete between the rib holes, which indicates that the failure mode of the concrete between the rib holes is mainly shear failure.
金鴻鑫,陸琨,陶忠,等.新型PKG疊合板抗彎性能試驗研究及有限元分析[J].混凝土與水泥制品,2021(12):59-66,74. JIN H X,LU K,TAO Z,et al.Experimental Study and Finite Element Analysis on Bending Properties of New PKG Composite Plates[J].China Concrete and Cement Products,2021(12):59-66,74.