A Systematic Study on the Utilization of Embossed Steel Plates for Composite Construction

这三项试验工作的主要成果如下：1.84个全夹层试件的恒侧压直剪试验：(1)主要破坏模式是混凝土在浮雕前的局部压碎.(2)在达到剪切粘结强度之前，没有观察到滑移；2.30根开口夹层试件的梁试验：(1)在现有Rilem/CEB/FIP钢筋混凝土构件压花钢板剪切粘结强度试验的基础上，建立了梁式粘结强度试验系统。(2)验证了所提出的无侧压条件下压花钢板剪切粘结强度计算公式的正确性。13个带有螺柱连接件的全开夹层试件的多次剪切试验表明：(1)抗剪强度低于各构件的总和；(2)3(1)的原因是各构件之间的应力-滑移关系不同，即1(2)描述的浮雕刚性行为和螺柱连接件的变形行为。

Main achievements from the results of the three experimental works could be summarized as follows :1.Direct Shear Tests with Constant Lateral Pressure for 84 Full Sandwich Specimens :(1)Main failure modes were due local crushing of concrete in front of to embossments.(2)No slip was observed until the shear bond strength attained, and afterward the stress was drastically dropped as the slip developed.(3)Empirical equations for the average shear bond strength of embossed steel plates were proposed.2.Beam Tests for 30 open Sandwich Specimens :(1)A Beam test system of shear bond strength of embossed steel plates in open sandwich members was developed based on the existing test for deformed bars in R/C members by RILEM/CEB/FIP.(2)The validity of the proposed equation for the shear strength was verified under no lateral pressure.3. Several Shear Loading tests for 13 Full/Open Sandwich Specimens with stud connectors :(1)The shear strengths were lower than the sum of the individual components.(2)The reason of 3 (1) was the differnce of the stress-slip relationships between the individual components, that is, the rigid behavior of embossment described as 1 (2) and the deformable behavior of stud connector.