PSI - Issue 78

Elisa Bassoli et al. / Procedia Structural Integrity 78 (2026) 793–798

795

/ Structural Integrity Procedia 00 (2025) 000–000 Hydraulic hollow jack

Hydraulic jack

Hydraulic jack

Dywydag Bar Ø 36

Dywydag Bar Ø 36 2+2 Dywydag Bar Ø 26

Servo-hydraulic actuator

Dissipator

Reaction wall

#4 strands

#4 strands

Strong floor

(a)

(b)

(c)

Fig. 1. The PreWEC structural system: (a) a schematic view, (b) a picture of the system and (c) a picture of the corbel reinforcement.

additional 20 mm layer of high-strength mortar. At 2420 mm from the base, steel plates were installed on both sides to enable damper connections. The columns had a cross section of 400 × 400 mm and were 4000 mm tall, featuring corbels and steel plates for damper attachment at the same height (see Figure 1(c)). The beams measured 300 × 500 mm in cross section and 4000 mm in length. The foundation had a cross section of 1400 × 550 mm and a length of 4500 mm, and was anchored to the laboratory strong floor using eight Dywidag bars. Its top surface included three 40 mm deep recesses for the installation of the wall and columns. Initial tension was set to 475 kN for the wall and 270 kN for each column. The wall included two bundles of four 15.7 mm diameter strands (600 mm² each), while each column used one 36 mm Dywidag bar. Tendons were anchored at both the top of the elements and within the foundation.