Peculiarities of stress distribution in beamless floor plate as a result of prestressing forces

Vestnik MGSU

Kremnev Vasiliy Anatol'evich¹  Talyzova Yulia Aleksandrovna¹  Kuznetsov Vitaliy Sergeevich² 

[1] LLC "InformAviaKoM";Moscow State University of Civil Engineering (MGSU);

关键词: prestressing losses;    monostrend;    prestressing;    monolith;    beamless overlap;    strength;    creep;    bearing capacity;    mixed reinforcement;   

DOI  :  

来源: DOAJ

【 摘 要 】

The article discusses the features of the stress state of the plate of capitalless girderless overlapping as a result of force of prestressed reinforcement, where the reinforcement used is high-strength reinforcement in flexible shell of "Monostrend" type. The peculiarity of specific design solution is a diagonal arrangement of prestressed reinforcement with heads fixed at the outer edges of the columns. The purpose of this arrangement of the prestressed reinforcement is deflection reduction of the central area of a plate and reduction of the width of cracks on the lower surface in the bay and on the upper surface of the support areas. The article shows the distribution of normal stresses of existing loads in the plane plate. The stress distribution over the thickness of the plate was assumed uniform. In order to establish design size of a section in diagonal direction it is possible to set the variables x and y and then calculate the coordinates of stress distribution curves in the concrete as a result of compression by prestress force. The authors offer diameter values of equal stresses in case of 4 and 8 K7O ropes. The method of calculating prestressing losses of concrete creep are offered.

【 授权许可】

Unknown