In October 2015, specialists from TPO "Reserve" - designers of the Philharmonic Concert Hall in Zaryadye Park - sent a request to the company "Schöck": to propose a thermal insulation solution for an open cantilever gallery on the main façade. The solution was considered as an alternative to the perforation of load-bearing structures in the zone of conjugation with the thermal contour of the building, which is traditionally used in design.
Schöck was faced with the task of developing a version of thermal insulation for the attachment point for a monolithic reinforced concrete console with an outreach of 3.8 meters and a thickness in the support section of 540 mm relative to the supporting frame. In addition, the task was complicated by the high requirements for permissible deflections of the open gallery structure.
The open gallery is a cantilever reinforced concrete slab of variable cross-section, crescent-shaped in plan. The gallery provides an entrance to the foyer of the concert hall at the level of the second floor and a pedestrian connection with the Zaryadye park space.
The engineers of the Schöck company proposed several options for solving this problem, of which the most energy efficient option was chosen by the designers of the TPO "Reserve" - load-bearing thermal insulation element (NTE) Schöck Isokorb® type SXT-Special.
Schöck Isokorb® SXT type designed to eliminate "cold bridges" in reinforced concrete structures that go beyond the thermal circuit of the building. On the basis of a standard product, a special version was created, ideally suited for the project in Zaryadye.
To justify the design solution using NTE Schöck Isokorb® Schöck specialists carried out comparative heat engineering calculations of this unit using the AnTherm software package. Calculations have shown that with the traditional solution of the support unit with perforation, the minimum temperature on the inner surface of the supporting structures in the area of the junction of the console will be 8.5 ° C, which will lead to the formation of condensation inside the building and the appearance of mold. Using NTE Schöck Isokorb® as part of the console support unit increases this temperature to 12.8 ° C, which eliminates the occurrence of these unfavorable factors and allows you to maintain a comfortable climate in the room. This means that there will be no negative consequences of the appearance of "cold bridges". At the same time, engineering calculations confirmed the fulfillment of regulatory requirements for the bearing capacity and deflections of the gallery structures.
According to Igor Barabash, chief designer of TPO "Reserve" NTE Schöck Isokorb® allowed designers to make a balanced and rational design decision in a local, but critical node of the building's supporting structures. This decision was supported by the general designer "Mosinzhproekt", it was additionally considered within the framework of the examination of the design documentation by experts of the Moscow State Agrarian University "Moscow State Expertise" and received their positive opinion.
“We are confident that our products, in which so much work has been invested, will perform their invisible work for a long time and efficiently. We know that visitors to the Philharmonic Hall in Zaryadye Park will not notice the result of our work, which means that we are doing it well,”said Nikolai Pavlov, Head of Schöck's Russia Division.
