concrete filled tube constructions.

Basing on existent concrete filled tube to reinforced concrete ceiling joining constructive form research and investigation in reinforced concrete area analyzing, the new constructive form of rigid connection of concrete filled tube to sitecast reinforced concrete ceiling, which is enhanced by using steel rigid element which consists of vertical steel plates, which cross column concrete core, and welded to steel tube was offered.

The thesis is devoted to the analysis of existent constructive forms of joint of concrete filled tube columns to various types of ceilings, their advantages and disadvantages. The actual tendencies, which react on introduction concrete filled tube constructions into civil engineering, were identified. The trends of practical appliance of concrete filled tube and steel reinforced concrete constructions were investigated. The model of reinforced concrete ceiling comparative calculation in case of rigid and link connection to concrete filled tube column were conducted.