Slope stability analyses using limit equilibrium and strength reduction methods
- Author(s): Zoran Berisavljević, Dušan Berisavljević, Vladimir Čebašek, Dragoslav Rakić
- Published By: GRAĐEVINAR
- Published Year: 10/2015
- DOI: 10.14256/JCE.1030.2014
- Size: 592 KB
- Quality: Unspecified
- Abstract: This paper presents results of comparative slope stability analyses conducted by limit equilibrium and strength reduction methods. Several slopes, taken either from geotechnical practice or literature review, are considered. The influence of tension, distributed load, finite element size and model parameters is analysed in relation to the location, shape of the critical failure surface and the corresponding value of the factor of safety. Both methods provide similar results if they are correctly applied using appropriate software programs.
![[Image: download.png]](http://postgen.civilea.com/icon/download.png)
Code:
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:
http://forum.civilea.com/thread-27464.html
***************************************
Dependence of RC high-rise buildings response on the earthquake intensity
- Author(s): Jelena Pejović, Srđan Janković
- Published By: GRAĐEVINAR
- Published Year: 8/2015
- DOI: 10.14256/JCE.1205.2014
- Size: 576 MB
- Quality: Unspecified
- Abstract: The relationship between the ground motion intensity measure (IM) and the engineering demand parameter (EDP) is analysed in the paper so as to identify
and define the most efficient EDP-IM relationships for RC high-rise buildings. A 30-story RC high-rise building with the core wall structural system was selected as
the reference building. 240 nonlinear time-history analyses were conducted for 60 ground motions on the spatial model of the building. The existing intensity measures were analyzed and the new ones – providing the most efficient relationships for RC
buildings - were proposed.
Code:
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:
http://forum.civilea.com/thread-27464.html
***************************************
Punching strength of flat slabs with and without shear reinforcement
- Author(s): Marko Bartolac, Domagoj Damjanović, Ivan Duvnjak
- Published By: GRAĐEVINAR
- Published Year: 8/2015
- DOI: 10.14256/JCE.1361.2015
- Size: 1,29 MB
- Quality: Unspecified
- Abstract: The punching shear strength is an extremely significant parameter for the design of flat slabs, i.e. the slabs supported directly on columns, without beams between columns. Slab punching design models are presented according to Eurocode 2, ACI Code 318, and fib Model Code 2010. The authors’ own experimental research on the punching shear of
slabs with and without shear reinforcement is described, and the results are compared with predictions given in the mentioned design models. It was established that all design models underestimate the experimentally obtained shear strength in the case of slabs without shear reinforcement. As to slabs with shear reinforcement, it was observed that
the shear strength determined according to Eurocode 2 is overestimated.
Code:
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:
http://forum.civilea.com/thread-27464.html
***************************************
Effect of openings on infilled frame stiffness
- Author(s): Fatih Cetisli
- Published By: GRAĐEVINAR
- Published Year: 8/2015
- DOI: 10.14256/JCE.1155.2014
- Size: 792 KB
- Quality: Unspecified
- Abstract: It is widely known that the stiffness and strength of frames increases by incorporation of masonry infill panels without openings. The behaviour of partly infilled reinforcedconcrete frames is analysed, taking into account dimensions and locations of
openings. A numerical parametric study of infilled reinforced-concrete frames is conducted, with an emphasis on wall dimensions, and dimensions and locations of openings. An appropriate analytical expression is presented for estimating the
reduced stiffness of an equivalent diagonal compression strut.
Code:
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:
http://forum.civilea.com/thread-27464.html
***************************************
Accelerated load tests with a heavy vehicle simulator
- Author(s): Marjan Tušar, Mojca Ravnikar Turk
- Published By: GRAĐEVINAR
- Published Year: 7/2015
- DOI: 10.14256/JCE.1105.2014
- Size: 860 KB
- Quality: Unspecified
- Abstract: A full-scale accelerated structural load test was performed in the scope of field trials conducted to investigate the effect of various strengthening actions on weak pavements. The asphalt layer thickness varied from 6.5 cm to 13.6 cm. The results of deformations applied on test structures are presented in the paper. The loading of each test structure lasted for approximately 2 weeks. Clear dependence between the depth of permanent deformation and thickness of asphalt layers was established on thin
pavement structures only.
Code:
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:
http://forum.civilea.com/thread-27464.html
***************************************
Sloshing in medium sized tanks under earthquake load
- Author(s): Ersan Güray, Gökhan Yazıcı
- Published By: GRAĐEVINAR
- Published Year: 7/2015
- DOI: 10.14256/JCE.1149.2014
- Size: 648 KB
- Quality: Unspecified
- Abstract: This paper presents results obtained by numerical study of sloshing effects in medium sized rectangular tanks subjected to a long-period seismic excitation. The Smoothed Particle Hydrodynamics (SPH) method is used, and the wave displacement and pressure are analysed. The intensity of sloshing effects depends not only on the peak ground acceleration but also on the dominant frequency of ground motion.
Excessive sloshing displacements and pressures increase when the natural period of the contained liquid approaches the dominant period of ground excitation.
Code:
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:
http://forum.civilea.com/thread-27464.html
***************************************
Nonlinear seismic analysis of steel frame with semi-rigid joints
- Author(s): Paulina Krolo, Mehmed Čaušević, Mladen Bulić
- Published By: GRAĐEVINAR
- Published Year: 6/2015
- DOI: 10.14256/JCE.1139.2014
- Size: 884 KB
- Quality: Unspecified
- Abstract: The nonlinear seismic analysis of steel frame without diagonals is presented in the paper. The real behaviour of semi-rigid joints is taken into account through prior numerical simulation of the selected type of joint. The resulting bending moment
and rotation curve is substituted with trilinear approximation and incorporated in seismic analysis according to the nonlinear static N2 method. Absolute and relative frame displacements are determined, and the corresponding results are compared with results for the steel frame with absolutely rigid joints.
Code:
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:
http://forum.civilea.com/thread-27464.html
***************************************
Analysis of guyed steel lattice mast subjected to environmental loads
- Author(s): R. Tugrul Erdem
- Published By: GRAĐEVINAR
- Published Year: 7/2015
- DOI: 10.14256/JCE.1181.2014
- Size: 360 KB
- Quality: Unspecified
- Abstract: Steel lattice masts rank among the most efficient load-bearing structures in the field of high-rise construction. The non-linear analysis of a guyed steel lattice mast is conducted using the SAP 2000 finite-element program for different ice thickness
values at 1500 m of altitude. After definition of the geometrical model and crosssection properties, various load combinations are analysed. Finally, the wind speed - ice thickness relationship is obtained, and the maximum wind speed that the structure can withstand is determined for varying ice thicknesses.
Code:
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:
http://forum.civilea.com/thread-27464.html
***************************************
Determination of dynamic parameters of double-layered brick arches
- Author(s): Ferit Cakir
- Published By: GRAĐEVINAR
- Published Year: 2/2015
- DOI: 10.14256/JCE.1081.2014
- Size: 764 KB
- Quality: Unspecified
- Abstract: Masonry arches assume a very important role in construction industry, and we find them in many historical structures all over the world. Dynamic parameters, frequency, and damping of masonry arches are defined in this paper using the Experimental Modal Analysis (EMA). Double-layered arches were built using standard hollow bricks and
traditional Horasan mortar. The brick arches were tested with an impact hammer, and the arch response was measured using a laser vibrometer. Experimental tests were compared with numerical modelling in order to verify adequacy of physical models.
Code:
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:
http://forum.civilea.com/thread-27464.html
***************************************
Specific features of stainless steel compression elements
- Author(s): Jelena Dobrić, Zlatko Marković, Dragan Buđevac, Željko Flajs
- Published By: GRAĐEVINAR
- Published Year: 2/2015
- DOI: 10.14256/JCE.1128.2014
- Size: 400 KB
- Quality: Unspecified
- Abstract: Stainless steel has a number of features that define different behaviour of structural elements made of this material, as related to equivalent carbon steel elements. These properties, especially prominent in case of compression elements, are manifested
through the nonlinear stress and strain relationship, pronounced influences of material hardening due to cold forming. Basic principles for the analysis of coldformed stainless steel compression elements, either included in modern technical regulations, or resulting from current research, are presented in this paper.
Code:
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:
http://forum.civilea.com/thread-27464.html
***************************************