Brick Structure Layer Seismic Strengthening Design Research

Brick concrete structure is a vertical bearing structure in buildings with brickwall, column or block masonry, lateral load-bearing beam, floor, roof slab ofreinforced concrete structure. China in five, sixty in the construction of a largenumber of low rise residential, office buildings, most of them for the masonrystructure. Light gauge steel layer as a new technology, because of high strength andlight weight, the advantages of the original building structure and foundation effect.Much engineering. Structure with brick concrete structure layer under thestrengthening design in recent years at home and abroad, is the common concern ofscholars, it is for the structure design to provide a new method for the developmentof safer, more reasonable direction.This paper presents a design plus housing should be combined with theaseismic reinforcement, combined with practical engineering analysis of the originalstructure for the masonry structure, the upper part of the light steel structure addinglayer, the reinforcement method of the substructure and the connection constructionpractices, the main research work includes the following sections:(1) The related technology of building top layer design and construction ofsteel structure: in combination with the project example, the lower brick structure ofthe functions of the adding stories structure scheme of steel structure adding layerhousing reasonable. In order to increase the overall structure adding layer, carries onthe design to the connection reinforcement and steel structure adding layer of theoriginal structure and the original structure.(2) Through the analysis of reasons for failure of reinforcement mechanismanalysis of earthquake damage of brick concrete structure after adding stories andseismic, analysis and aseismic strengthening of existing masonry structure, seismicstrengthening of structures, such as double mesh reinforcement wall reinforcementlayer, on brick concrete structure building, additionally providing structural columnreinforcement design, using the embedded technology and related node constructionmeasures in the connecting surface, suggestions for seismic strengthening of brickconcrete structure buildings, plus the structural column section minimum using370mm×240mm, beam height shall be not less than240mm, the new structurecolumn and ring beam and the original masonry by a more than14of the embedded steel bars. Get on the add layer part of reliable connection, The structural integrityand seismic capacity.(3) Analysis of the seismic performance of masonry structure top steel structureadding layer: with a brick teaching building and engineering examples, using thePKPM calculation software to before and after reinforcement of masonry structurewas checked and compared, based on the structure before the reinforcement,compared the effect of reinforcement reinforcement design of pre period.