Post-Tensioned Concrete Long-Span Slabs in Projects of Modern Building Construction

World Multidisciplinary Civil Engineering-Architecture-Urban Planning Symposium - WMCAUS

土木建筑工程

Szydlowski, Rafal^1 ; Labuzek, Barbara^2

Cracow University of Technology, Warszawska Street 24, Cracow

31-155, Poland^1

TCE Structural Design and Consulting, Domikanow Street 14, Cracow

31-409, Poland^2

关键词: Architectural buildings;    Modern buildings;    Post-tensioned concrete;    Post-tensioned slabs;    Prestressed slabs;    Span-to-depth ratio;    Suitable solutions;    Unbounded tendons;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/245/2/022065/pdf
DOI  :  10.1088/1757-899X/245/2/022065

学科分类：土木及结构工程学

来源: IOP

【 摘 要 】

Nowadays, design of modern an architectural building structures requires the use of slender and free from numerous supports slabs. The most suitable solution for above requirements are the post-tensioned slabs with unbounded tendons. Slabs prestressed by unbounded tendons are successfully used worldwide for several decades. During that time many recommendations dealing with the forming of geometry and prestressing, dimensioning and erection technology were issued. During the recent years prestressed slabs characterized by span and slenderness substantially exceeding recommended limitations were designed and erected with success in Poland. During the slabs erection and in two years of their using, the deflection of three oversized slabs were monitoring. In spite of designed the slabs significantly larger and slenderer than the recommended maximum value of span and span to depth ratio, the deflection of the slabs is definitely far from the limit value. The paper shows the geometry, characteristic and deflection of erected slabs and conclusion. Description of a very large span slab (21.3m), that was designed regarded to the information obtained from the previous realisation, is presented in this paper.