QUASI-STATIC SHEAR-COMPRESSION TESTS ON SIX RUBBLE STONE MASONRY WALLS

سال انتشار: 1398
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 136

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شناسه ملی سند علمی:

SEE08_517

تاریخ نمایه سازی: 23 آبان 1399

چکیده مقاله:

Stone-masonry works are among the most vulnerable structures to earthquakes, especially the typology A (MIT,2009), which are the walls constructed with uncut stones and pebbles with irregular arrangement. Recently, a database of quasi-static cyclic tests on stone-masonry walls that were publicly available has been published (Vanin et al., 2017). In the database there are only a few results available for the typology A. To be more specific, there is only one data point from this typology in the database used to build the proposed empirical drift capacity model (Vanin et al., 2017). To contribute to the available database and to get a better understanding of the cyclic performance of stone-masonry walls of typology A with two leaves, six large scale shear-compression tests have been conducted at EPFL. The specimens have the same typology and dimensions (height = 1600 mm, length = 1600 mm and thickness = 40 mm). To represent old buildings, lime mortar with the aggregate/binder ratio of 3/1 is used. Figure 1 illustrates the specimens and the test setup.Different kinematic boundary conditions and pre-compression load has been applied to investigate the effect of each ofwhich on drift limits, force capacity, and stiffness of walls. The 3D displacement field has been measured using two sets of pair of cameras on both sides of the walls. Table 1 shows the applied axial load ratio at the base (s/fc, where s is the vertical stress at the base and fc is the compression strength of masonry) and ratio between the height of zero-moment from the base (H0) to the height of the wall (H).

نویسندگان

Amir REZAIE

Ph.D. Candidate, EPFL, Lausanne, Switzerland

Michele GODIO

Ph.D., EPFL, Lausanne, Switzerland

Katrin BEYER

Associate Professor, EPFL, Lausanne, Switzerland