Efficient structural seismic performance evaluation method using improved endurance time analysis

2019 ◽  
Vol 18 (4) ◽  
pp. 795-809 ◽  
Author(s):  
Shuang Li ◽  
Kun Liu ◽  
Xiangyang Liu ◽  
Changhai Zhai ◽  
Fengwei Xie
Keyword(s):  
Performance Evaluation ◽  
Seismic Performance ◽  
Evaluation Method ◽  
Time Analysis ◽  
Endurance Time ◽  
Seismic Performance Evaluation ◽  
Performance Evaluation Method

Reviews Research and Development of Reinforced Concrete Column Seismic Performance Evaluation

2013 ◽  
Vol 353-356 ◽  
pp. 2079-2083
Author(s):  
Yong Ping Xie ◽  
Lei Jia ◽  
Gang Sun
Keyword(s):  
Performance Evaluation ◽  
Reinforced Concrete ◽  
Seismic Performance ◽  
Evaluation Method ◽  
Modern Technology ◽  
Concrete Column ◽  
Reinforced Concrete Column ◽  
Seismic Performance Evaluation ◽  
Existing Problems ◽  
Performance Evaluation Method

Column is the key member of the seismic structures. Tthe failure of column will cause a large number of casualties. With the development of modern technology, more attention on seismic performance evaluation of reinforced concrete column is paid by academics. The theoretical basis and the concepts of seismic performance evaluation of reinforced concrete column are introduced firstly, and then the existing reinforced concrete column seismic performance evaluation method, the principle and the existing problems are reviewed. Meanwhile the key problems and tendency of research of seismic performance evaluation methods are putted forward.

scholarly journals Development of Preliminary Seismic Performance Evaluation Method for Water Supply Pipes considering Hydraulic Characteristics

2020 ◽  
Vol 20 (5) ◽  
pp. 319-327
Author(s):  
Jeongwook Choi ◽  
Doosun Kang ◽  
Donghwi Jung ◽  
Chanwook Lee ◽  
Do Guen Yoo ◽  
...  
Keyword(s):  
Performance Evaluation ◽  
Water Supply ◽  
Seismic Performance ◽  
Evaluation Method ◽  
Preliminary Evaluation ◽  
Hydraulic Characteristics ◽  
Seismic Performance Evaluation ◽  
Water Pipes ◽  
Detailed Evaluation ◽  
Performance Evaluation Method

The seismic performance evaluation of water supply systems is generally conducted in two stages: a preliminary and a detailed evaluation process. In the case of water pipelines, the priority pipes are selected through preliminary evaluation for a detailed evaluation. However, as the preliminary seismic performance evaluation method for existing water pipes solely focuses on their installation year and structural evaluation, it does not reflect the hydraulic characteristics of the water supply, which is the main purpose of water pipes. Therefore, this study proposed an evaluation method for the existing preliminary evaluation judgment index, by considering the calculation method for the probability of spatial failure, as well as the index obtained through hydraulic analysis results. The proposed methodology was applied to a domestic regional water supply system to be verified, and the results were analyzed. The proposed method is expected to serve as a result of basic research to enhance the seismic performance evaluation method in the future.

scholarly journals Nonlinear Seismic Performance Evaluation of Flexural Slotted Connection Using Endurance Time Method

2020 ◽  
Vol 2020 ◽  
pp. 1-15
Author(s):  
Seyed Mohamad Seyed Kolbadi ◽  
Hosein Piri ◽  
Ali Keyhani ◽  
S.Mahdi Seyed-Kolbadi ◽  
Masoud Mirtaheri
Keyword(s):  
Seismic Performance ◽  
Computational Cost ◽  
Structural Response ◽  
Time History ◽  
Steel Structure ◽  
Response Spectra ◽  
Structure Design ◽  
Time Analysis ◽  
Endurance Time ◽  
Seismic Performance Evaluation

The equivalent statistical methods, spectral analysis, and time history analysis are usually offered in the steel structure design regulations. Among these methods, the third one is more accurate; however, it requires more time to align the accelerometers due to a large number of analyses. In the endurance time (ET) method, incremental acceleration functions gradually and uniformly increases over time while their linear and nonlinear response spectra are proportional to the mean of the real seismic spectrum. These functions are used as input functions to analyze the nonlinear time history of structures, and the performance of structures is evaluated based on the maximum length of time they can meet specified performance goals. A three-story steel bending frame with (slotted web) SW and (web unslotted flange) WUF connection is examined through the performance time method in performance-based design. This article aimed at evaluating the seismic performance of these connections in the bending frame through endurance time analysis to predict the structural response in the probabilistic evaluation of the seismic performance of the structures. It is found that the endurance time analysis is justified with the seismic performance of the connections with low computational cost and proper accuracy. The results of comparing both SW and WUF connections indicated that the SW connection prevents the connection welding area from being failed due to transferring the plastic joint into the beam and in an area away from the column face and causes less damage compared to the WUF connection.

Study on the Method of Structural Seismic Performance Evaluation Based on the Damage Spectra

2010 ◽  
Vol 163-167 ◽  
pp. 4324-4330
Author(s):  
Jun Teng ◽  
Hu Bing Tu
Keyword(s):  
Performance Evaluation ◽  
Seismic Performance ◽  
Structural Damage ◽  
Evaluation Method ◽  
Low Cycle Fatigue ◽  
Time History ◽  
Seismic Damage ◽  
Hysteretic Energy ◽  
Seismic Performance Evaluation ◽  
The Impact

Park-Ang seismic damage model is increasingly concerned due to it considers not only maximum elasto-plastic deformation, but also low cycle fatigue accumulated hysteretic energy, while research on the method of seismic performance evaluation based on the model is still rare. Therefore, a new evaluation method on the basis of damage spectra is proposed in this paper. Damage spectra of site I considering three kinds of ultimate deformation ductility factor are built firstly, and then transformation relationship between damage of MDOF and SDOF of frame structures is researched. Lastly, procedure of seismic damage evaluation on the structure is proposed. An example is used to confirm the validity of the spectra-based seismic performance evaluation method. The example analysis shows that: the method proposed here is reasonable to consider the impact of the cumulative hysteretic energy on the structural damage. The results from the method have good consistency with the time history analysis results. It can assess the extent of structural damage from the statistical viewpoint.

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