NORMA COVENIN (Review ). YEAR: Approved December 9, Reviewed March GENERAL REMARKS: The Norm is mandatory by law. COVENIN 82 seismic code and seismic risk analysis data were used to construct the response spectrum. Furthermore, the earthquake time duration. Mapa de zonificación sísmica para el Occidente de Venezuela, Norma Covenin En general, los valores predichos por la Norma para estas ciudades.
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Edited by Sebastiano D’Amico. In this method the structure is subjected to one or more seismic records scaled to intensity levels that increase progressively. This study performed the review and comparison of the seismic response of two high-rise steel structural models with dif-ferent bracing systems projected according to Venezuelan seismic code COVENIN This option is deactivated when the IFC is created as a single building.
It can be concluded that V-braced model presented a better overall performance than X-braced model, but in both cases non- braced frames showed much greater damage due to dynamic actions.
Seismic combination Node-columnDescription Max.
In small increments of linear loads, equilibrium is expressed as:. In other words, if users deactivate this option, the program only takes into account the floors above ground level when calculating the base shear using the static method.
This will be the Final state. This number will determine which is the final state, if this state is not reached before the maximum number of iterations has been undertaken. The building was modeled according its ccovenin design, called original building OBwith plan asymmetry Figure 1b and one way 25 cm depth slabs in X direction.
Help explanations are included within 7156 mentioned dialogue box, which describe the implications of these options. Code implementation and improvements in its application Code regarding loads on structures. Thus, this paper presents a proposal for the generation of an artificial accelerogram compatible with a regulatory response spectrum. The 3D non-linear dynamic analysis is based on the procedure explained in [ 20 ].
Artificial accelerograms Elastoplasticity Seismic analysis Shear buildings Structural dynamics. The damage or fracture suffered by the element causes its stiffness to vary. These are intermediate states, in which each laterally confined element provides a percentage of its stiffness depending on the level of damage it has reached. This structure represents a common typology used for residential 176 in Venezuela, for prone seismic zones. From coenin Table it is evident that the original building, designed according to current Venezuelan codes has ductility values lower than the redesigned and the displacement-based buildings.
Although strong seismic events are rare in Brazil, Brazilian structural engineers are often involved in such an analysis for neighboring Latin American countries.
Using this module in CYPE-Connect, the program designs, checks and generates the detailing of coplanar joints composed of hollow structural sections, which are most commonly used in flat trusses with circular hollow sections, rectangular hollow sections, square hollow sections and hollow sections composed of two channels welded in a box. This rights cover the whole data about this document as well as its contents. Unbalanced loads 17566 applied again until it can satisfy a convergence criterion.
On the other hand, in order to know the maximum torsional moments for each column in this model, there were applied four seismic combinations where it was noted that there was greater torsion in the case of the component of the earthquake in Z-direction. As of the Built by scientists, for scientists. It is clvenin that for the accelerograms used, the maximum torsional moments occurs in the extreme columns and in the columns located in the intersection of the structure.
These three models differ only in the dimensions of its structural elements Table 1. Acknowledgments Authors wish to acknowledge to the Scientific and humanistic Council of Lisandro Alvarado University for the financial support of the research in the field of non-regular structures.
By activating this option, the time required to analyse the job could substantially increase, depending on when the Final state is reached. The torsional moments for the other seismic combinations used in this study were obtained using the same procedure. These restorative forces are calculated from:.
Verification of section 2. Maximum torsional moments for seismic combinations. Occurrence probabilityin 50 years.
Comparación de las normas sísmicas venezolana, Covenin by on Prezi
Below these options, users can limit the Maximum number of iterations. The normalized information is the so-called elastic response spectrum, which provides the maximum response acceleration for a linear system of a degree of freedom. This study used a mechanical method that involves non-linear analysis with deterministic and probabilistic approaches, as well coveninn procedures of analysis based on Limits States defined by displacements [ 6 ], in order covemin evaluate the behavior of a low rise RC building with plan irregularity, designed according to Venezuelan codes cofenin 7 ]-[ 9 ] and subjected to seismic action effect.
This check should be carried out for all the construction elements of each floor. Table 5 presents the values of Pp of all the frames of evaluated buildings. November 21st Published: The pattern of lateral seismic loads consist in increasing loads with height triangular distribution applied in a monotonic way until the structure reaches its maximum capacity [ 20 ].
One direction ribbed slabs were modeled as rigid diaphragms in its plane by using additional elements with no flexural capacity Figure 4. In this case it is possible to combine some traditional reinforcement techniques with new ones like FRP jacketing.
Obtain the cracking and progressive fracture states is activated, the following options appear:. Geometric characteristics of elements from each modeled building.
Prevention of Collapse Limit State; -: Assessment method The Quadrants Method is based on the results of the non-linear static analysis Pushover analysis.
Seismic Evaluation of Low Rise RC Framed Building Designed According to Venezuelan Codes