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.
|Published (Last):||20 August 2015|
|PDF File Size:||9.11 Mb|
|ePub File Size:||19.2 Mb|
|Price:||Free* [*Free Regsitration Required]|
Similarly, interstorey drifts for applied earthquakes, R1, R2 and R3 with its three intensities, were obtained. This number will determine which is the final state, if this state is not reached before the maximum number of iterations has been undertaken As the structure is analysed several times, if all the cracked intermediate states are considered as of the first analysis, the design process of the structure could be quite long.
One direction ribbed slabs were modeled as rigid diaphragms in its plane by using additional elements with no flexural capacity Figure 4.
Seismic Evaluation of Low Rise RC Framed Building Designed According to Venezuelan Codes
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 ckvenin, square hollow sections and hollow sections composed of two channels welded in a box. In order to evaluate the capacity curve two of the main structural parameters are taken into account.
Inter-storey drifts adopted for the damage thresholds determination. These are intermediate states, in which each laterally confined element provides a percentage of its stiffness depending on the level of damage it has covenjn. Interstorey drifts of RB building obtained from 2D and 3D nonlinear dynamic analysis, it was noted that 2D model provided greater drifts values than the 3D model drifts.
Thus, the sections of the structural elements of OB are insufficient to properly control the damage caused by seismic forces. Each building is modeled in two dimensions, spitting each frame to get a more detailed response for the seismic behavior of each frame; a 3D dynamic analysis was applied to the ER model. Information on seismic acceleration histories of a random nature is not generally available, due in part to the lack of records.
Dovenin characteristics of elements from each modeled building. This information allows users to know if the iterative process that has been configured is adequate or must be changed: 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.
Mariama Njie –
Introduction Along its history, Venezuela has been severely affected by destructive earthquakes [ 1 ]. CYPE-Connect was implemented in the previous program version The performance point is a common procedure accepted among the scientific community to evaluate the seismic performance of a structure under a specific demand.
Results of the research shown that the current design of this kind of structures is not safe when they are under the maximum seismic actions prescribed by codes, then it is necessary to review the design procedures in order to find more realistic designs that fulfill the goals of the performance-based design.
Based on these results it was demonstrated the structural asymmetry of the assessed building since the center of mass does not coincide with covenni center of rigidity, determining that the greatest torsional moments are on outer columns and inner corners.
The structures are modeled by incorporating the structural response when it incurs in the material and geometrical non-linear range, produced by high deformations caused by accidental excitations earthquakes [ 11 ]. Please bear in mind that users who have any version can update to the latest version for free. The second parameter is the threshold that defines the Repairable Limit State, obtained from [ 14 ] for RC framed buildings with similar characteristics to the covejin ones.
Consider all intermediate cracking and fracture states By choosing this option, CYPECAD considers all the states State 1, State 2 and Intermediate states that have been generated when designing the structure.
Axis Z beams cm.
By the other hand, the dynamic analysis is an analysis method that can be used to estimate structural capacity cogenin seismic loads. Results let to compute the damage lumped in specific elements of the structure, but cocenin results are beyond the objective of this Chapter. Then, a new load increase is applied. This rights cover the whole data about this document as well as its contents. More information on the determination of the fundamental period of the structure.
Reproduction for commercial use is forbidden. Now with the Using the Post-tensioned concrete slabs for buildings module, Covenjn can design the passive reinforcement of post-tensioned slabs, having calculated the forces in the post-tensioned tendons bonded or unbonded tendonsbased on the properties which have been introduced by users.
Then it is essential to continuously make progress and research in the field of earthquake engineering and upgrade the seismic design codes. The Dovenin Method also uses this parameter in order to define the roof displacement of the case studied, defined according to the N2 method [ 5 ].
Conclusions In order to know the seismic response of the studied building it were used analytical methods considering the seismic hazard level and structural regularity criteria.
The capacity curves were normalized according to the weight of the buildings in order to unify the comparative criteria. From the resizing model RB it was obtained interstorey drifts that satisfied the maximum value established in the code.
On the other hand, when designing in accordance to some seismic standards, the minimum base shear condition must be met when a dynamic analysis modal spectral is applied. Rectorado II, Primer Piso.
Code covnin and improvements in its application Code regarding loads on structures. The 3D non-linear dynamic analysis is based on the procedure explained in [ 20 ]. The approximation carried out by the These will be implemented in an upcoming version.