LONG SPAN CONCRETE FLOORS FOR MULTI-STOREY CIVIL BUILDINGS

Principles of formation, design philosophy and technological behavior of castin-place and precast floor disks for residential and civil buildings are considered. The field of their application includes erection of new and replacement of existing floors. Floors are constructed from conventional or lightweight concrete in removable or retained cast form works. The design concept implies placement of buried foam billets from light efficient material into the future slab either before or in the process of concreting. Peculiarity of these slabs design is characterized by application of technique for structure parameters control, which is presented in the form of adaptive evolution method. In theoretical terms the design procedure presents successive refinement of geometric and/or physical attributes of slab finite element model, and in terms of calculation – multiple (in the process of one calculation) change of input data which defines the object physical and geometric structure. As a result through iterative procedure a system with complex internal and simple external structure is formed which ensures savings of concrete and reinforcement as well as rationality of the structure characterized by its maximum resistance to loads.

• INTRODUCTION

• STRUCTURAL AND TECHNOLOGICAL PECULIARITIES OF FLOORS

• PRINCIPLES OF FLOOR DESIGNING

• CONCLUSIONS

• REFERENCES