[PDF] Top 20 Rev. IBRACON Estrut. Mater. vol.7 número5

... (Editor, UFRGS, Porto Alegre, RS, Brazil) • José Luiz Antunes de Oliveira e Sousa (Editor, UNICAMP, Campinas, SP, Brazil) • Roberto Caldas de Andrade Pinto (Editor, UFSC, Florianó[r] ... See full document

... He compared the bond stress obtained in pull out tests between conventional com- pression strength concrete of 35MPa to compression strength con - crete with rubber residues of 25 MPa[r] ... See full document

... NBR8681 [1] speciies partial factors, as well as the combination factors of actions to be used in the design of buildings. Speciic standards of different structural materials should deal only with strength aspects such ... See full document

... This work presented the formulation of a inite element for material and geometric nonlinear analysis of plane frames, including a new method for integration of stress resultants and tangent constitutive matrix over ... See full document

... Progressive collapse (PC) is usually described as a catastrophic dynamic behavior of civil engineering structures (Kim et al. [7]) that is inluenced by both material (Tsai and Lin [8]; Kwasniewski [9]) and ... See full document

... Figure 9 illustrates the curves obtained for the tests using 8.0 mm bars, which shows the steel bar slip in relation to the concrete at all ages for the T25 samples, and for the T45 sp[r] ... See full document

... This shows that in Brazil, unlike what is observed in other countries, there is yet no consensus on the eficiency of the surface treatment techniques that should be used with cylindric[r] ... See full document

... A study was conducted to assess the inluence of the steel reinforcement ratio in concrete columns on their properties of creep and shrinkage. Experimental tests and three-dimensional inite element-based simulations of ... See full document

... Therefore, the objective of this paper is to describe the statistical analyses of the results of the acceptance control of the concrete used for the manufacturing of tetrapods at the B[r] ... See full document

... 830 mm of length and 75 mm of diameter was embedded in each formwork, in the column center, for subsequent passage of the central tie; and four rectangular metal tubes with external mea- sures 60 mm x 100 mm for later ... See full document

... According to Carpinteri et al. [16], a substantial increase in the ultimate deformation of the beam is expected when compression rebars are introduced. This characteristic is captured by the pres- ent model, as seen in ... See full document

... in the 1980s, the modelling of structural phenomena considering uncertainties became attractive. This approach allows the inclu- sion of uncertainties in several analyses in a consisten[r] ... See full document

... It is noteworthy the quality of MPT by its proximity from MEF, checked in the normal stresses diagrams. The maximum compressive stress compared in Table [7] reinforce this fact. The largest difference oc- curs in ... See full document

... With the computer program developed it is also possible to ind reinforcement values for processed inite element models. The program was used to design the reinforcement for a model of a subway station. The contour maps ... See full document

... The second issue of the Volume 7 of the IBRACON Structures and Materials Journal is now released. This issue brings an article on ire design of composite ribbed slabs, a topic not covered by the Brazil- ian ... See full document

... the IBRACON Structures and Materials Journal. In this issue (Volume 7 Number 1 – February 2014), seven original articles on concrete materials and struc- tures are ... See full document

... This paper presents the structural behavior of six reinforced concrete pile caps in rectangular arrangement, considering the ground deformability of pile support, different concrete str[r] ... See full document

... This study presents an alternative way of assessing the inal efforts of a structure, including second order effects, using both the coef - icients γ z and B 2. A range of medium-sized[r] ... See full document

... According with experimental data reported in [6], the irst concrete has tension strength of 2.3 MPa and elasticity modulus of 32,300 MPa. The second concrete has tension strength of 2.25 MPa and elasticity modulus of ... See full document

... The continuum damage is introduced in elastic constitutive law using the effective stress concept (that oc- curs on the undamaged part with defects) and the strain equivalence hypothes[r] ... See full document