in recent years, seismic evaluation and vulnerability of the existing buildings, that have been designed based on an earlier seismic design code or designed without seismic design criteria, has been very important. in this paper, the seismic evaluation and vulnerability of concrete buildings, using an old 5- story building with shear walls as an example has been discussed. for this building, fi...

this paper may be regarded as a new numerical method for the analysis of triangular thin plates using the natural area coordinates. previous studies on the solution of triangular plates with different boundary conditions are mostly based on the rayleigh-ritz principle which is performed in the cartesian coordinates. consequently, manipulation of the geometry and numerical calculation of the int...

Abstract—Various retrofit techniques for reinforced concrete frame with infill wall have been steadily developed. Among those techniques, strengthening methodology based on diagonal FRP strips (FRP bracings) has numerous advantages such as feasibility of implementing without interrupting the building under operation, reduction of cost and time, and easy application. Considering the safety of st...

Heritage structures are an important part of the history each community as well economic resource. This study aims to investigate earthquake damage and failure mechanism a historic Bazaar located in Kashan (center Iran), which dates back eighteenth century. Numerical models were built by macro method, considering two cases fixed support soil–structure interaction (SSI). To assess structural beh...

The present study offers a deductive design procedure based on designs that have been optimally screened in accordance with ASCE 41-17's nonlinear static (NSP). subsequent phase inferred linear methodology from the philosophy underlying NSP of 41-17. deduced is applied to provide set optimal 6-story SMRF under two load patterns: code-based and first-mode shape patterns. by proposed are compared...

This paper discusses a seismic retrofit method that is intended for reinforced concrete (RC) frame structures and sees the replacement of existing masonry infills with timber structural panels. The intervention aimed at enhancing overall behaviour buildings without modifying original system. In presented research over 200 finite-element models comprising bare, masonry-infilled retrofitted singl...

This paper describes the prototype design, specimen design, experimental setup, and experimental results of three light-gauge steel plate shear wall concepts. Prototype light-gauge steel plate shear walls are designed as seismic retrofits for a hospital structure in an area of high seismicity, and emphasis is placed on minimizing their impact on the existing framing. Three single-story test spe...

The primary focus of this study is to evaluate the nonlinear response reinforced concrete (RC) frames with two types brick infills viz., unreinforced masonry infill (URM) and semi-interlocked (SIM) together lintel beams, subjected seismic loads. quantified in terms reduction factor base shear. Infill walls are modeled using double strut cyclic element. Nonlinear static adaptive pushover analysi...