PSI - Issue 59

Hud Mykhailo et al. / Procedia Structural Integrity 59 (2024) 617–621 Hud Mykhailo/ Structural Integrity Procedia 00 (2019) 000 – 000

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At the first stage of the calculation, it was assumed that horizontal ties are located in the outermost and middle spans (Fig. 2a.) along the lower chords of the trusses and vertical ties are additionally placed in the end sections (Fig. 2b) of the pool bottom. Spacers are located along the lower and upper chords of all trusses. The main cross-section is a rectangular profile pipe.

Fig. 2. Scheme of placement of horizontal ties along the lower belt of trusses (a) and vertical ties in the end sections (b)

The mechanical properties of the S235 steel material were used in the modeling: Young's modulus E = 2.1  10 5 MPa; Poisson's ratio  = 0,3; ρ= 7,8 . 10 4 N/m 3 . The short end sides of the basin bottom were fixed in the form of a hinged beam, simulating the transport position of the structure.

Fig. 3 Scheme of links placement in the second calculation scenario

In the second design variant, ties are additionally installed in 10 spans along the lower panel of the trusses, symmetrically with respect to the transverse axis of symmetry. Also, ties were added to the upper chords of the trusses in the end spans along the longer sides. In the third design variant, ties along the trusses' upper girders on the bottom's short sides are also installed. In the fourth design variant, ties were added to the top panel of the trusses in the middle section of the bottom. 3. Research results As a result of the calculations, the deformation diagrams and ultimate deflections for four variants of tie placement (Fig. 4) were obtained.