Strength calculation of structures Indoor Speed ​​Skating Stadium

Strength analysis of a sports complex at APM Civil Engineering

In the first half of 2008, according to the drawings provided by the specialists of the project SEC APM calculation model of the palace of the ice cover was created. Picture of this object is shown below.

A general view of an indoor ice rink

Structurally coating modeled as a metal-wood frame whose upper part is closed plates. The coating consists of several prefabricated sections, each of which consists of a beam resting on a concrete support with one and the ring beam, on the other hand, two girders and resting on an annular beam with a single design and stands on the other side. The annular beam is held shrouds which converge and are fixed at the top of the pylon. Pilon two braces connected to the supports on the ground. Backstay are plate-circuit elements which are connected to the axles.

General view of the calculation model (rod model)
The enlarged fragment metal coating
The core elements surround structure model display sections (pylon and backstay)

In addition to the rather complex in the creation of computational model, special attention required complex loads introduced into consideration.

Due to known and predetermined cross-sectional elements, as well as the settings you specify material downloaded is automatically set - own weight. To him the weight of components of accounting were added to the coating, mounted on the frame, and process load (additional suspension equipment, etc.).

Since the geometric shape of the canopy structure is quite complex, several load cases (in various configurations and applications of varying intensity) have been established for more qualitative analysis to superimpose snow load and wind action. In particular, individual uploading included asymmetrical impact these power factors. And plus to it were raised schedules changing wind loads in time for the dynamic analysis.

Separately, for the subsequent introduction of the calculated combination loads wondered possibility precipitation poles and pylons error during assembly braces (potential difference of their lengths).

A total of more than ten separate loadings of which has been compiled over twenty settlement combinations that simulate different (including asymmetric) loading of the structure during its operation (subject to installation errors).

After introduction of the full range of initial information static design calculation was performed for various combinations of loads, and calculation is made of natural frequencies and natural modes of oscillation pattern coating. Because wind load during the operation is variable, the dynamic analysis was performed additionally.

Map of the stress state of steel
One of the modes of natural vibrations of the structure

One of the most loaded elements in the construction are backstay retaining pylon. Their general state of stress was assessed on the core design model. But for a more detailed analysis of potentially dangerous places (places chain links compound) Additional solid model was created - the assembly, composed of portions of chain links and connecting element - axis. Thus, further problem was solved contact interaction. The following embodiments shown in the pictures of calculation models and the stress distribution map of the elements of the assembly.

Embodiments calculation unit chain links models compound
The stress distribution in the circuit elements and assembly the assembly axis
The stress distribution in the chain assembly site elements

Thus, this complex calculation measures allowed full consideration to the tense-deformed state of the canopy of the Ice Palace and to evaluate the performance of both individual components and the entire structure as a whole.