Experimental Study On Anti-Seismic Behavior Of Two-Row-Hole Sealing Concrete Block Bearing Wall

At present, the structure of two- row- hole sealing concrete block bearing walls isone of the four building systems of concrete hollow blocks prevailed in Shanghai. Thetwo-row-hole sealing concrete block is a kind of new material in building, and hasmany advantages. Adjusted formula and parameter, they may be used as material ofbearing wall. The blocks, with reasonable structure and excellent performance, canhelp in settling some disadvantages of small hollow concrete (SHC) blocks, forinstance, the bad capability of heat insulation and preservation, the brittleness, and theaptness to be infiltrated by water; two-row-hole concrete blocks improve thebuildings' performance of heat preservation and insulation, sound insulation, as wellas benefit to the fittings of the pipelines of water, electricity and gas, and avoid thebreakage of incising and holing for hole-wall of SHC blocks. In addition, they havemore advantages for second-fitment. Publishing country policy of forbidding using solid clay brick, concrete block iswidely used. In our country, about two-thirds city of big or middle city is inearthquake field, because anti-seismic performance is a main element restrictingspreading and used widely for this two-row-hole sealing block, it has both theoryvalue and important practical significance to research of this wall. Anti-seismic performance of two- row- hole sealing concrete block bearing walls isdeeply studied in this thesis. Experiments are carried out to study on the seismicbehavior including six whole scale specimens under the cyclic loadings. According tothe shape of the blocks, experiments of both reinforcement only in horizon andun-reinforcement are considered, and in the former,reinforcement of both inhorizontal mortar gaps and in ring beam block reinforcement are carried. Based on theexperiments, failure characters and hysteretic behaviors are analyzed. Other behaviorsincluding load carrying capacity, stiffness, ductility and capacity of energy dissipationetc. It is shown that the level reinforcement bearing wall with this concrete blockshave good anti-seismic behaviors. In this thesis, aside from the upper, the anti-crack experiment of eight kinds ofcomplex wall is done, find three kinds better complex material which have goodanti-crack performance: cement mortar + elastic putty, paste mortar + grid fabric,plasterboard.