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Seismic Coefficients and Earthquake Damage Predictions for a Space Truss with a Supporting Structure
Zailin Yang,Ziwen Wang,Yang Yong,Menghan Sun 한국강구조학회 2022 International Journal of Steel Structures Vol.22 No.4
Previous studies have shown that when the lower support structure is considered, the dynamic characteristics of grid structures change signifi cantly, and the stress distributions are also noticeably diff erent. Therefore, this paper discusses whether other simple and feasible structural seismic damage prediction methods could be proposed after accounting for the infl uence of the lower supporting structure. Considering diff erent site types and diff erent intensities, a time-history analysis was conducted using the mode decomposition response spectrum method for frequent 8- and 9-degree earthquake intensity. Then, the acceleration response spectra for diff erent sites experiencing 8- and 9-degree intensity of frequently occurring earthquakes specifi ed in the Code for Seismic Design of Buildings (GB50011-2010) were used to calculate and discuss the distribution law for the seismic internal forces of space truss structures. Based on the calculation conclusion, the design method and damage prediction method for a plate-like space truss structure under earthquake actions are discussed. Then, a new value of the seismic action coeffi cient was proposed in this paper, and the ground motion peaks for various types of earthquake damage for diff erent site types were obtained using the functional relationship.
Moonki Jang,리신호,Piao Zailin,Zhang Yulong 한국농공학회 2008 한국농공학회논문집 Vol.50 No.3
The economics of a passive solar heating system(PSHS) with the pebble bed heat storage was evaluated, and the applications of the PSHS were analyzed, in this study. The results are as folows: The heating load, solar heat gain, and stored heat/year of the PSHS in the solar house model were found to be 10,778MJ, 3,438MJ, (conventional coal heating system, CCHS), which uses coal, were found to be USD1.60/year and USD60.90/year, respectively, and the yearly expenses of the PSHS were found to be 38 times less than those of the alternative heating system(CCHS). If it will be supposed that the life cycle of the passive solar heating system, according to the results of the LC analysis in the two systems, is 40 years, the total expenses for the life cycle of the PSHS and the CCHS will be USD1,431.50 and USD2,740.00, respectively. The period for the investment payback of the PSHS is six years.
장문기,리신호,Jang, Moon-Ki,Yulong, Zhang,Zailin, Piao,Rhee, Shin-Ho The Korean Society of Agricultural Engineers 2008 한국농공학회논문집 Vol.50 No.3
The economics of a passive solar heating system (PSHS) with the pebble bed heat storage was evaluated, and the applications of the PSHS were analyzed, in this study. The results are as follows: The heating load, solar heat gain, and stored heat/year of the PSHS in the solar house model were found to be 10,778MJ, 3,438MJ, and 11,682MJ, respectively. The yearly energy expenses of the PSHS and the alternative heating system (conventional coal heating system, CCHS), which uses coal, were found to be USD 1.60/year and USD 60.90/year, respectively, and the yearly expenses of the PSHS were found to be 38 times less than those of the alternative heating system (CCHS). If it will be supposed that the life cycle of the passive solar heating system, according to the results of the LCC analysis in the two systems, is 40 years, the total expenses for the life cycle of the PSHS and the CCHS will be USD 1,431.50 and USD 2,740.00, respectively. The period for the investment payback of the PSHS is six years.