Global structural analysis of central cores supported tall buildings compared with FEM
The focus of this article is to present an approximate method of calculation based on the equivalent column theory. This approximate method of calculation may be successfully applied in the case of tall buildings. Knowing the geometrical and stiffness characteristics of the structure, applying the equivalent column theory may determined: the displacements in both directions, the rotation of the structure, critical load, shear forces, bending moments for each resisting element and the torsional moment of the structure. The results obtained using the approximate calculation method will be compared with the results obtained using an exact calculation based on F.E.M.: Autodesk Robot Structural Analysis and ANSYS 12.1.
Global structural analysis of buildings
Introduction. Spatial behaviour. Stability and frequency analyses. Stress analysis: an elementary approach. Stress analysis: an advanced approach. Illustrative example Qualitative and quantitative evaluation. Global critical load ratio. Use of frequency measurements for the structural analysis. Equivalent wall for frames and frame-like planar structures. Test results and accuracy analysis. Evaluation: Design guidelines. Appendix A: Cross-sectional characteristics for bracing elements. Appendix B: The power series method for eigenvalue problems.
Organic geochemical characteristics and depositional setting of Tertiary organic-rich sediments from onshore Penyu Basin , eastern Chenor , Pahang , Malaysia
Poor knowledge of the organic facies characteristics of the eastern Chenor Pahang has made it remain an untapped potential in the Penyu Basin. Therefore, detailed geochemical and petrographic characterization of the Tertiary organic facies of the eastern Chenor area of the Penyu Basin was carried out to characterized its organic matter (OM) source input. Towards achieving the goal, this study focuses on determination of organic matters richness, type and origin as related to their paleoenvironmental conditions of the carbonaceous mudstone and shale using organic petrography combined with organic and inorganic geochemistry. The sedimentary succession is characterized by fine to coarse grained sandstone occurring in association with carbonaceous mudstone and shale in a predominantly fining upward sequence within a lacustrine environment. These facies are generally enriched in organic matter as indicated by the TOC results, hydrocarbon yield (S2) and extractible organic matter (EOM), suggesting significant hydrocarbon generation potential for the area.