Experimental Investigation On Seismic Behavior Of HPFL-Brick Composite Ring Beam And Constructional Column

Damage under seismic action to rural low-rise masonry buildings mostly lackingof seismic capacity or not considering seismic fortification is the most common andserious. previous earthquake experience shows that， setting reinforced concreteconstructional column and ring beam is an effective measure to improve the seismiccapacity of masonry structure. However, reinforced concrete construction column andring beam technology exist different degrees of construction technical defects, and theprocess is complicated that reserving holes, form work and pouring.Aiming at the complex process of RC ring beam and constructional column intraditional masonry buildings, the high performance ferro-cement laminate (HPFL)and masonry wall have been formed as the combination ring beam and thecombination constructional column, forming a structural improvement of traditionalRC of ring beam and structural column. Strengthening the four exterior wall cornerswith HPFL narrow strip form the HPFL-brick composite constructional column,strengthening the wall tops with HPFL narrow strip form the HPFL-brick compositering beam, and these together form the "weak framework" structure.In this paper, full-scale model of HPFL-brick weak framework has been tested onthe shaking table (one layer load model referred to as ZK1, two layer load modelreferred to as ZK2), to observe and analyze it’s anti-seismic ability through changingThe vertical load, the HPFL band width, The number of reinforcement andother parameters. The study on feasibility that HPFL-brick composite constructionalcolumn and HPFL-brick composite ring beam instead of the traditional reinforcedconcrete ring beam and constructional column has been carried out. Experimentalresults show that, resistance capability to deformation of one layer load “weakframework” model that strengthened with240mm wide HPFL is higher than180mmwidth by26.8%，but also the maximum acceleration is1.8times the180mm wideHPFL’s, so the larger the HPFL reinforcement width, the better the seismic effects.Seismic bearing capacity of two sides HPFL stripe reinforcement is higher than singleside’s, with the increase exceeding56%, two sides HPFL stripe reinforcement hasmore obvious anti-seismic effects than single side’s. Strengthening brick ring beamand brick constructional column with HPFL narrow stripe can improve the crackingload of the structure, seismic effects of HPFL-Brick ring beam and constructional column composite structure is obvious. Therefore it can completely substitute for theRC ring beam and structural column.This paper then, based on the analysis of the test data, puts forward somesuggestions about how to choose the HPFL reinforcement width in engineering. Whenthe seismic fortification intensity is7degree below, the recommended reinforcementwidth of HPFL is180mm. In the regions of7and8fortification intensity, you canchoose the HPFL reinforcement width of240mm or360mm. while fortification of9degree, you’d better use the double-sided HPFL of360mm width.