Earthquake-Resistance Performance Researching Of Brick Wall With Structure Column, Ring Girder And Horizontal Ribs

With a lot and wider bonded structures, they are main structure types of residences in earthquake areas. The bricked wall not only is a bearing member, but also is only side-force-resistance member. With Its material brittleness property, it is subject to be damaged in earthquake. In order to improve the earthquake-resistance performance of bonded structure, the measures by putting ring girders, structure column and horizontal ribs as well as pulling ribs into bonded structure can greatly improve the earthquake-resistance capability of bonded structure.The thesis reviews the existing state of bonded structure earthquake-resistance performance research at home and abroad, compares the earthquake-resistances performances of all kinds of structures. In order to investigate integration earthquake-resistance performance of bonded structures, the article takes 6 pieces of bonded structure with structure column, ring girder and horizontal ribs as studying object, the testing pieces bears fixed vertical load and gradual increasing horizontal repeating loads, and studies power consumption capability, limit bearing ability and deformation performance. In testing, it is emphasized to test the working principle and strength action rate of horizontal ribs, and studies forced state of structure column and ribs and binding action for bonded structure.Through studying and testing, following conclusions may be obtained: If the bricked bonded structure of horizontal mortar joint with ribs is provided with structure column, the bonded structure and structure column can make full use of their advantages. The fractured bonded structure is restrained from structure column, and will consume energy in fraction and shear-resistance way. This greatly improves the earthquake-resistance performance. During being forced, the structure columns are combined with wall body to resist against action of shear force as an integrated body. The limit bearing abilities of bonded structure and structure column cannot reach their max. value in same time. When the whole wall body reaches limit, the bonded structure has entered into the fraction and shear-resistance state. Under the same conditions, the wall body with and without structure column horizontal ribs may increase by about 13~30% in their limit loads, and the horizontal displacement in limit may promote 1 or 2 times. According to destroy mode, respectively consider the influence of height/width ratio tobonded structure strength and steel rib strength, propose calculation formula (4—8) of limit bearing capability of wall body with structure column horizontal ribs under the common action from vertical and horizontal loads. By being compared with domestic existing formula, the calculated result by the formula is closer to the actual measured result and it is reasonable. Take the idea of three levels prevention and two stages design, use energy equivalence principle, combine deformation's checking computation with strength checking computation to propose practice calculation methods of equivalence shear-resistance strength. The method is considered strength as standard and implies deformation's checking computation. It is an easy and practice method.