Experimental Research On Shear Strength Of Masonry By Drilling Core Method

Currently, the masonry structure in the domestic architecture of the building has been further consolidated its excellent acoustic insulation, thermal insulation performance has been widely favored people, at the same time, it also includes the construction process is simple, low cost advantage. Under the influence of various factors, masonry structure is widely used in urban buildings. To ensure the safety of masonry structures, it is necessary to actively promote the pilot study of the overall performance of masonry structure. Country in the event of the earthquake intensified focus on structural seismic performance. Masonry shear behavior, especially along through the masonry joints Shear strength determines the seismic behavior of masonry. More mature stage shear strength test method in situ single cut it, double-cut method. However, these methods are more or less there are some limitations, such as single cut it representative is not strong, long period, there is an upper vulnerable to the impact of the twin shear stress method, etc. limitations. Therefore, the aim of this pilot study is to provide a practical, easy to detect shear strength of the method of operation and the development of local detection curve, provide the basis for the preparation of local standards.The test of a total of two times of the 42 masonry wall, the collecting of the sintered hollow brick, the Yellow River brick, concrete brick, mud autoclaved fly ash brick, coal gangue brick and masonry mortar strength, standard masonry shear strength and compressive strength of masonry and the standard of core drilling sample shear strength etc. data.The main contents of this paper include:First of all, at home and abroad in the masonry shear strength test has a basic grasp the full range of the above, the system shows the current application of the broader masonry shear strength testing method, the principle and method of shear strength advantages of masonry coring method, combined with the current situation of the research contents of this paper are presented.Secondly, based on the 5 block masonry specimens a total of two batches of 84 as the research object, established the basic test method; analysis of masonry core shear strength and the difference of correlation between shear strength and standard masonry; analyzes the influence of masonry drill core testing of the main factors through test data collection; sure, the shear strength formula and the masonry shear strength and core strength of masonry mortar masonry conversion formula of five kinds of regression analysis, and established the province where the curve.Finally, combined with the engineering practice, the social and economic benefits of the drilling core method to detect the shear strength of masonry are expounded.