Y.-J. Shi's research while affiliated with Tsinghua University and other places

... This paper presents a review of recent studies on the mechanical characteristics of 24 aluminium alloys in fire and after fire, as well as the structural behaviour of aluminium alloy 25 structures in fire conditions, considering members, connections, joints and overall systems. In 26 addition, possible passive and active fire protection measures for aluminium alloy structures 27 are introduced and discussed. Lastly, recommendations for future work on the structural fire 28 behaviour of aluminium alloy structures are set out, providing insight into aspects that require 29 further investigations to promote the more widespread use of aluminium alloys in structural 30 applications. ...

... This may have something to do with the yield strength or tensile strength. Liao and his colleagues [115] found that the rate at which fatigue cracks spread in the weld metal of Q345qD bridge steel depends on both the low temperature and the stress ratio. ...

... The failure assessment diagram (FAD) based on fracture mechanics provides a new way for the safety assessment of members with crack defects. K is one of the key fracture parameters for evaluating crack defects by FAD [9]. Accordingly, the singular element method and the theoretical model of 3D-VCCT were introduced to present the calculation method of K. ...

... Probably owing to this disseminated knowledge, research in seismic behaviour of welded joints has become a less active topic in recent years. Nevertheless, even bolted connections have significant welded parts, justifying continuous experimental testing as investigated by Liu et al. which recently systematized damage models for weld failure in beam-to-column joints [225]. ...

... High performance steel (HPS) is considered to have higher strength, better ductility, and a lower thickness effect than ordinary steel and many significant applications have been carried out because of the exceptional properties of HPS, such as the Minato Ohashi Bridge [1], the Millau Bridge [2], and National Stadium (Bird's Nest) [3]. Extensive research has been conducted to investigate the mechanical properties of HPS on the basis of material tests [4,5]. ...

... Four vertical LVDTs were set up between the upper and lower plates, along with two horizontal LVDTs on the inside faces of the EASs at approximately mid-height and mid-width (Fig. 9) to monitor the lateral displacements of the flanges. In previous work by other authors, the horizontal LVDTs have been positioned at the geometric centre of the EASs [19], however, the geometry of these EASs is imperfect so here they are placed at the centre of each flange instead. ...

... In the last years, some experimental campaigns have been performed to evaluate the elastoplastic local buckling effects on the ultimate resistance of aluminium members under different loading conditions. In particular, the attention has been focused on the stiffened or unstiffened box and I-shaped sections, angle sections and circular tubes subjected to uniform or nonuniform compression and uniform or non-uniform bending moment [12][13][14][15][16][17][18][19][20][21][22][23][24][25]. Different analytical approaches have been proposed to evaluate the inelastic response of aluminium members. ...

... Conventional shallow composite beam normally consists of a prefabricated slab laying on the bottom flange of I-beam, and a cast-in-situ slab making them into a whole as shown in Fig. 1(a) [7]. In order to solve the problem of large weight in conventional shallow composite beam, the shallow composite beam with arch profiled deck shown in Fig. 1(b) and deep profiled deck shown in Fig. 1(c) are developed [8][9]. ...

... The residual stress is applied on the element integration point of the finite element model using initial stress modulus provided by ABAQUS. The magnitude and distribution of residual stress refer to the residual stress model proposed by Ban Hui-Yong [30], which is suitable for high strength steels. ...

... Baskar and Shanmugam [12] studied the composite action between concrete slab and steel beam in different width-thickness ratios and moment-shear ratios by testing six composite floor specimens. Scholars from Tsinghua University in China [13][14][15][16][17] have systematically studied the design method, mechanical properties and influencing factors of shallow composite beams with deep profiled deck under bending moments. Shallow composite beam has also been widely studied in European countries [18][19], such as the shallow composite beam with cap-shaped steel shown in Fig. 1(d). ...