Determination of coarse aggregate content of concrete specimens by wave propagation and Artificial Neural Network

Autor: Danilo Pereira dos Santos, Vladimir Guilherme Haach

Publikováno v: Revista IBRACON de Estruturas e Materiais, Vol 17, Iss 6 (2024)

Abstract Nondestructive tests that assess the constitution or degradation of structures are of great interest in Civil Engineering. Among the non-destructive testing techniques, the Ultrasonic Pulse Velocity (UPV) test stands out; however, although i

Externí odkaz: https://doaj.org/article/55367d0410f6482280c0744fdc9cbe15

Reliability analysis of truss structures considering complete failure paths and using the FLHB model

Autor: Túlio Raunyr Cândido Felipe, Edson Denner Leonel, Vladimir Guilherme Haach, André Teófilo Beck

Publikováno v: Revista IBRACON de Estruturas e Materiais, Vol 14, Iss 4 (2021)

abstract: The study of progressive collapse of structures using numerical models requires accurate modeling of geometrical nonlinearity and material failure behavior. Numerical models must demonstrate stability, such that localized member failures do

Externí odkaz: https://doaj.org/article/e8434f5620754818a6816bf25be77f80

Análise teórico-experimental da influência da força normal em nós de pórtico externos de concreto armado

Autor: Vladimir Guilherme Haach

Publikováno v: Biblioteca Digital de Teses e Dissertações da USPUniversidade de São PauloUSP.

Os nós de pórtico são locais de mudança de direção do eixo da estrutura, logo são regiões descontínuas, ou seja, as hipóteses de Bernoulli de deformações lineares ao longo da seção transversal não são válidas. Sendo assim os métodos

Externí odkaz: http://www.teses.usp.br/teses/disponiveis/18/18134/tde-26072005-161151/

Flexural and direct tensile strength ratio for concrete unusual cross-sections

Autor: José Anchiêta Damasceno Fernandes Neto, Vladimir Guilherme Haach

Publikováno v: Revista IBRACON de Estruturas e Materiais v.16 n.1 2023
Revista IBRACON de Estruturas e Materiais
Instituto Brasileiro do Concreto (IBRACON)
instacron:IBRACON

The relationship between flexural and direct tensile strength (αfl ratio) has been explored in evaluations of the cracking moment for concrete structural elements. However, most results for αfl can be applied only for rectangular cross-sections. Th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bc367d1fc6a7f7955767f6a311dc8903
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1983-41952023000100201

Theoretical and computational simulation of the effect of the number of intermediate diaphragms on the live load distribution factors and structural response of a precast girder bridge

Autor: José Miguel Parra Benítez, José M. Benjumea, Vladimir Guilherme Haach

Publikováno v: Latin American Journal of Solids and Structures, Volume: 19, Issue: 5, Article number: e455, Published: 08 AUG 2022
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Latin American Journal of Solids and Structures v.19 n.5 2022
Latin American journal of solids and structures
Associação Brasileira de Engenharia e Ciências Mecânicas (ABCM)
instacron:ABCM

Intermediate diaphragms (ID) in bridges with precast girders are intended to improve load distribution among girders. Despite this, their efficacy has been doubted recently due to the complex construction tasks needed to join them to the girders. Acc

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::038ee21a83ecf9bd80f4dc96cb76f50a
https://doi.org/10.1590/1679-78257120