Non-Linear Analysis of Flat Slabs Prestressed with Unbonded Tendons Submitted to Punching Shear

被引：6

作者：

Brigo, Heraldo ^{[1
]}

Ashihara, Luana J. J. ^{[1
]}

Marques, Marilia G. ^{[2
]}

Liberati, Elyson A. P. ^{[1
]}

机构：

[1] Univ Estadual Maringa, Civil Engn Dept, BR-87020900 Maringa, Brazil

[2] Univ Fed Vicosa, Inst Exact & Technol Sci, BR-38810000 Rio Paranaiba, Brazil

来源：

BUILDINGS | 2023年 / 13卷 / 04期

关键词：

punching shear; flat slabs; prestressed concrete; non-linear analysis; CONCRETE; STRENGTH;

D O I：

10.3390/buildings13040923

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This article describes a numerical study for the evaluation of the punching shear behavior of non-adherent prestressed flat slabs without shear reinforcement. Nonlinear three-dimensional models were used, along with the finite element method (FEA) through the ATENA software in order to validate the constitutive models adopted for concrete and steel. The numerical results were compared with the experimental results. The results revealed a good agreement among load capacity, deformations, and cracking panorama, as well as the relation between numerical and experimental failure loads. After validation, a parametric study was carried out to analyze the influence of tendon spacing, slab thickness, and column rectangularity in prestressed flat slabs. Finally, the results obtained in the numerical models in relation to the failure load were compared with the estimated values for the failure load according to the main normative predictions dealing with the flat slab system.

引用

页数：23

共 28 条

[1]

[Anonymous], 2014, ABNT NBR 6118

[2]

[Anonymous], 2014, Building code requirements for structural concrete (ACI 318-14)

[3]

[Anonymous], 2013, fib Model Code for Concrete Structures 2010

[4]

[Anonymous], 2010, CEN (European Committee for Standardization). EC-2 Eurocode 2: Design of Concrete Structures. Part 1-1: General Rules and Rules for Buildings

[5]

Bazant Z., 1983, MATER STRUCT, P155, DOI [https://doi.org/10.1007/BF02486267, DOI 10.1007/BF02486267]

[6]

Bigaj AJ, 1999, Ph.D. Dissertation

[7] Three dimensional combined fracture-plastic material model for concrete [J].

Cervenka, Jan ;

Papanikolaou, Vassilis K. .

INTERNATIONAL JOURNAL OF PLASTICITY, 2008, 24 (12) :2192-2220

[8]

Cervenka V., 2016, ATENA PROGRAM DOCU 1, P282

[9] Influence of prestressing on the punching strength of post-tensioned slabs [J].

Clement, Thibault ;

Ramos, Antonio Pinho ;

Ruiz, Miguel Fernandez ;

Muttoni, Aurelio .

ENGINEERING STRUCTURES, 2014, 72 :56-69

[10]

Comite Euro-International du Beton, 1993, CEB FIP MOD COD 1990

← 1 2 3 →