abstract: Reinforced concrete flat slabs are structural systems in which directly supported by columns, without the use of beams. A phenomenon that deserves attention these is punching shear, characterized occurrence shear stresses close to slab-column interface, can produce fragile rupture those regions. This study presents some results reliability index β obtained for connections based on FOR...

Abstract On June 24, 2021, a 40-year-old reinforced concrete flat plate structure building in Miami suffered sudden partial collapse. This study analyzed the overall performance and key components of collapsed based on design codes (ACI-318 GB 50010). Punching shear post-punching performances typical slab-column joints are also studied through refined finite element analysis. The collapse proce...

The use of Engineered Cementitious Composites (ECC) for structural design requires a number of assumptions of the material, some of which can be drastically different from those suitable for normal concrete and tension-softening fiber reinforced concrete. This contribution focuses on design assumptions of the constitutive models of ECC in tension and compression. Specifically, while the tensile...

Flat slabs in contemporary buildings are most commonly supported by rectangular cross-section columns. Research of columns for punching is rather narrow. The purpose this work was the experimental research and adjustment their design method. Reinforced concrete 6 cm thickness without transverse reinforcement were used as testing specimens. During tests load on slab transferred using stamps. Sid...

Abstract This study evaluates seven flat slabs made with reinforced concrete. There are three reference slabs, one of them doesn’t present any shear reinforcement. Four have a new model reinforcement stud type, internally anchored to the flexural reinforcements. That has an additional element, called on this by name: anti-cracking pins. The main objective research is find ideal spacing between ...

Abstract The article studies the punching shear capacity of reinforced concrete slabs by simulation method. Based on Concrete Damage Plasticity (CDP) constitute model, model is established in Abaqus software. was verified comparison tests. parametric were implemented to investigate effect and steel strength resistance slab. slab also calculated formulas proposed available standards. Obtained re...

Experimental tests of a composite concrete-cross-laminated timber (CLT) floor system were conducted. The floor system was constructed with 5-ply CLT panels (6.75 in. thick) made composite with a 2.25 in. thick reinforced concrete topping slab. Four series of tests were performed using different specimen configurations and laboratory testing methods. Tests included: (1) Comparative one-way bendi...

This paper presents a Cuckoo Optimization Algorithm (COA) model for the cost optimization of the one-way and two-way reinforced concrete (RC) slabs according to ACI code. The objective function is the total cost of the slabs including the cost of the concrete and that of the reinforcing steel. In this paper, One-way and two-way slabs with various end conditions are formulated as ACI code. The t...

The punching and post-punching shear behaviours of reinforced concrete (RC) flat plate structures are often studied by using a representative slab–column connection isolated from the parent structure. In this study, set numerical modelling techniques is established to create competent three-dimensional non-linear model simulate RC connections without reinforcement, through use which failure fea...