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دانلود رایکان مقاله انگلیسی ISI با موضوع ارزیابی ساختاری و سازه کامپوزیت های بتن فولادی در مفاصل تیر و ستون تحت بار زلزله

عنوان فارسی مقاله:

مدل سازی عددی برای ارزیابی ساختاری و سازه کامپوزیت های بتن فولادی در مفاصل تیر و ستون تحت بار زلزله

عنوان انگلیسی مقاله:

Refined numerical modelling for the structural assessment of steel-concrete composite beam-to-column joints under seismic loads

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2. Past experimental test

2.1. Specimen geometrical details and material properties

Through the FE exploratory investigation, the exterior full-scale composite welded joint (hereinafter called WJ) investigated in [25,26] was taken into account. As shown in Figs. 1–4, the WJ specimen was characterized by the presence of a 330 mm-long (from the external flange of the column) concrete cantilever edge strip and a 2000 mm-long (from the internal face of the column) IPE240 steel beam section directly welded to a 3400 mm-long HE280B partially encased composite column section. Table 1 collects the main features of the steel profiles that were taken into account for the design of the composite beam and column, at the time of the experimental research project. The steel beam was connected with a 1000 mm-wide and 120 mm-thick concrete slab by means of two 100 mm 19 mm diameter headed studs placed every 150 mm. The number of shear studs was calculated to ensure a full shear connection between the slab and the beam [24]. The arrangement of the shear studs is shown in Fig. 2(a) and (b). The slab was cast on a trapezoidal steel decking profile and reinforced with six U-shaped longitudinal rebars of 14 mm in diameter (Fig. 2(c)). Furthermore, three transversal rebars of 20 mm in diameter (Fig. 2(c)) were added in front of the column as per Eurocode 8 – Annex C [23].