Greenhouse Structural Design for Safety and Economic study in Taiwan
Date Issued
2005
Date
2005
Author(s)
Lin, Yi-Hsiang
DOI
zh-TW
Abstract
This study analyzes two aspects of gable cold-formed steel structure greenhouse, structural design for safety and structural design for Economic, and compares the economic difference in how use steels weight in shed greenhouse and arched greenhouse. Referring to relevant studies and analyzes fifteen structural design models group and compares hinge support and elements strong of structure direct span side site-plan to determine their effect on number of elements used. Using SAP to analyze structural design, and compare the result in use steels weight with past study, which employed STAADⅢ to analyze. We find out that under the same span/height and different designs of major frames: only when the span/height at 4.0, it is most economic when major frame is 2.5m. With any other span/height smaller than 4.0, it is most economic when major frame is 3.3m. Also, span/height decreases while use steels weight increases. Comparing use steels weight of span/height at 4.0 and 1.5 in one unit floor area and one unit interior space volume, the result shows that use steel weight in the latter is only 77.3% and 63.6% of the former. In comparisons of different designs of greenhouse, using same steel material, gable greenhouse is more economic to form the same floor area. While using 10m as design unit, with approximately the same interior space volume, only when using shed greenhouse, which form an interior space volume of 85 m3 , it is more economic, saving 5% of use steels weight, The Gable greenhouse is more economic for the other two structural design models group, which both have a larger interior space volume, saving approximately 27% to 35% in unit use steels weight. Disregard steel material, and compare gable, shed, and arched greenhouses, we found out arched greenhouse is the most economic. With floor area of about 55 m2 － 60 m2 , unit use steel weight for gable, shed, and arched greenhouses are 27.61, 17.50, and 6.98 kg/cm2 , respectively. In addition, whether comparing interior area of interior space volume, using arched greenhouse can save at least approximately 50% of unit use steel weight.
Subjects
結構設計
溫室
輕型構造
cold-formed steel structures
greenhouses
structural design
Type
thesis
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