Seismic Perfromance of Masonary Building With Timber Frames
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Faculty Civil Engineering
Abstract
Nepali traditional dwelling houses constructed in brick masonry with traditional technology
constitute the major type of structures in the urban nuclei of the Kathmandu Valley.
Preservation of these structures against possible earthquakes is of prime concern in view of
conservation needs. The present study deals with the seismic evaluation of typical traditional
Nepali traditional dwelling houses constructed in brick masonry with traditional technology
constitute the major type of structures in the urban nuclei of the Kathmandu Valley.
Preservation of these structures against possible earthquakes is of prime concern in view of
conservation needs. The present study deals with the seismic evaluation of typical traditional
building of brick masonry with timber frames.
The present work of the comprehensive study on the subject is divided into two parts. In the
first part, various modeling of connections between different elements of brickwork and timber
is studied through analysis of number of analytical test models. Based on the results of the
sensitivity study of different joint models, the most efficient and appropriate model adopted in
the seismic evaluation of the typical traditional dwelling house, the second part of the work.
The seismic evaluation of the typical building is carried out by three dimensional analysis of
the structure using finite element method. For the analysis, the brickwork is discretized as the
eight nodded solid elements, and the timber beams and columns as frame elements. The
flexible timber floor is duly considered. The building is assessed for various load cases
including gravity loads and earthquake effects in terms of response spectra.
The results of the analysis show that the traditional floors and the spandrels of the existing
structure are the weakest parts which need strengthening to make the structure withstand
earthquake excitation. The required improvement and strengthening techniques are proposed
mainly with the floor converted into rigid floor diaphragm. The analysis of the modified
structure shows considerable improvement in the dynamic characteristics of the building and
overall structural response. of brick masonry with timber frames.
The present work of the comprehensive study on the subject is divided into two parts. In the
first part, various modeling of connections between different elements of brickwork and timber
is studied through analysis of number of analytical test models. Based on the results of the
sensitivity study of different joint models, the most efficient and appropriate model adopted in
the seismic evaluation of the typical traditional dwelling house, the second part of the work.
The seismic evaluation of the typical building is carried out by three dimensional analysis of
the structure using finite element method. For the analysis, the brickwork is discretized as the
eight nodded solid elements, and the timber beams and columns as frame elements. The
flexible timber floor is duly considered. The building is assessed for various load cases
including gravity loads and earthquake effects in terms of response spectra.
The results of the analysis show that the traditional floors and the spandrels of the existing
structure are the weakest parts which need strengthening to make the structure withstand
earthquake excitation. The required improvement and strengthening techniques are proposed
mainly with the floor converted into rigid floor diaphragm. The analysis of the modified
structure shows considerable improvement in the dynamic characteristics of the building and
overall structural response.