دانلود رایگان مقاله انگلیسی کاهش اثر درون صفحه ای پرکننده قاب خمشی فولادی - اشپرینگر 2017

Abstract

In this paper, four large-scale one-story steel moment-resisting frame specimens have been tested. The first specimen is a onestory steel moment-resisting frame without masonry infill walls. The second is similar to the first but with infill wall having full physical contact to the frame. The other two are non-structural infill walls. The first non-structural infill wall has a complete decoupling from the frame, while the second has a full contact at the top of the wall and separated from the columns. The results of this paper have shown that life safety performance level for non-structural infill wall having a complete decoupling from the frame has satisfied the allowable story drift. This was not the case for infill wall having full physical contact to the frame or nonstructural infill walls sepatared from two sides.

5. Conclusions

Experimental studies have shown that structural infill walls have a major influence on behavior of structures. However, in seismic analysis and design, engineers typically ignore the additional stiffness and strength that the partitions may provide, which could prove to be beneficial or detrimental to the buildings. The purpose of this research is studying the effect of hollow block partitions on structural response of buildings. Thus, four steel frames in one story were tested and the effect of two types of wall separations (nonstructural infill wall separated from two and three sides) on seismic behavior of frame was investigated.

The results showed that for infill wall with physical contact to the frame, the initial stiffness and strength is increased considerably and therefore performance Level is different from those expected. Similar results had been found for nonstructural infill wall separated from two sides. Therefore, the effect of infill walls should be considered particularly for both life safety and collapse level. On other hand, the increase in initial stiffness and strength were less than those of nonstructural infill wall separated from three sides, and performance level was the same as those expected. Therefore, the effect of this nonstructural partition can be ignored particularly for life safety and collapse levels.