Computation of Fundamental Periods for Moment Frames Using a Hand-Calculated Approach
The second method (known as Method B), specified in the 1997 Uniform Building Code Static Force Procedure, is a rational and accurate approach for finding the fundamental period of a frame. The formula used in Method B, however, is not a popular formula because it involves time-consuming computatio...
| Main Author: | |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Electronic Journals for Science and Engineering - International
2009-06-01
|
| Series: | Electronic Journal of Structural Engineering |
| Subjects: | |
| Online Access: | https://ejsei.com/EJSE/article/view/114 |
| _version_ | 1797733548076040192 |
|---|---|
| author | J. Kent Hsiao |
| author_facet | J. Kent Hsiao |
| author_sort | J. Kent Hsiao |
| collection | DOAJ |
| description |
The second method (known as Method B), specified in the 1997 Uniform Building Code Static Force Procedure, is a rational and accurate approach for finding the fundamental period of a frame. The formula used in Method B, however, is not a popular formula because it involves time-consuming computations of frame deflections which usually require the use of computer software. A hand-calculated approach for the computation of frame deflections using a calculator rather than a computer is suggested in this paper in order to turn Method B into a practical method for determining the fundamental periods of low-rise moment frames. The general stiffness matrix of a three-story, three-bay frame presented in this paper is intended to be used as an aid to compute the deflections for any moment frame within three stories in height and within three bays in width. Examples shown in this paper illustrate the step by step procedure for the computation of the fundamental periods of low-rise moment frames using the proposed hand-calculated approach. These examples also demonstrate that the results obtained from the proposed hand-calculated static approach agree with that obtained from the dynamic analysis.
|
| first_indexed | 2024-03-12T12:30:42Z |
| format | Article |
| id | doaj.art-6b0724d150ac415cbf8df93fff24872e |
| institution | Directory Open Access Journal |
| issn | 1443-9255 |
| language | English |
| last_indexed | 2024-03-12T12:30:42Z |
| publishDate | 2009-06-01 |
| publisher | Electronic Journals for Science and Engineering - International |
| record_format | Article |
| series | Electronic Journal of Structural Engineering |
| spelling | doaj.art-6b0724d150ac415cbf8df93fff24872e2023-08-29T10:29:00ZengElectronic Journals for Science and Engineering - InternationalElectronic Journal of Structural Engineering1443-92552009-06-01910.56748/ejse.9114Computation of Fundamental Periods for Moment Frames Using a Hand-Calculated ApproachJ. Kent Hsiao0Southern Illinois University Carbondale The second method (known as Method B), specified in the 1997 Uniform Building Code Static Force Procedure, is a rational and accurate approach for finding the fundamental period of a frame. The formula used in Method B, however, is not a popular formula because it involves time-consuming computations of frame deflections which usually require the use of computer software. A hand-calculated approach for the computation of frame deflections using a calculator rather than a computer is suggested in this paper in order to turn Method B into a practical method for determining the fundamental periods of low-rise moment frames. The general stiffness matrix of a three-story, three-bay frame presented in this paper is intended to be used as an aid to compute the deflections for any moment frame within three stories in height and within three bays in width. Examples shown in this paper illustrate the step by step procedure for the computation of the fundamental periods of low-rise moment frames using the proposed hand-calculated approach. These examples also demonstrate that the results obtained from the proposed hand-calculated static approach agree with that obtained from the dynamic analysis. https://ejsei.com/EJSE/article/view/114Bending momentsConcrete beamsConcrete columnsDegrees of freedomDynamic analysisLateral forces |
| spellingShingle | J. Kent Hsiao Computation of Fundamental Periods for Moment Frames Using a Hand-Calculated Approach Electronic Journal of Structural Engineering Bending moments Concrete beams Concrete columns Degrees of freedom Dynamic analysis Lateral forces |
| title | Computation of Fundamental Periods for Moment Frames Using a Hand-Calculated Approach |
| title_full | Computation of Fundamental Periods for Moment Frames Using a Hand-Calculated Approach |
| title_fullStr | Computation of Fundamental Periods for Moment Frames Using a Hand-Calculated Approach |
| title_full_unstemmed | Computation of Fundamental Periods for Moment Frames Using a Hand-Calculated Approach |
| title_short | Computation of Fundamental Periods for Moment Frames Using a Hand-Calculated Approach |
| title_sort | computation of fundamental periods for moment frames using a hand calculated approach |
| topic | Bending moments Concrete beams Concrete columns Degrees of freedom Dynamic analysis Lateral forces |
| url | https://ejsei.com/EJSE/article/view/114 |
| work_keys_str_mv | AT jkenthsiao computationoffundamentalperiodsformomentframesusingahandcalculatedapproach |