|Alternative Title||Seismic Performance of Load-bearing Horizontal-hole Interlock Concrete Block Walls with Different Block Types|
|Place of Conferral||兰州|
|Keyword||块型 承重型横孔连锁混凝土砌块墙体 抗震性能 有限元模拟|
Load-bearing horizontal-hole interlock concrete block (LHICB), a kind of new wall material, has the characteristics of high bearing capacity, saving energy and land, environment protection, convenient construction and so forth. Based on tests for the fundamental mechanical properties of LHICB in early stage of the research team, in this paper, a test for seismic performance of LHICB walls was conducted.
Two wall specimens were designed in this paper: cross-shaped blocks wall specimen with structural columns and H-shaped blocks wall specimen with structural columns. Both specimens are full-size walls whose size is 2750mm×2640mm×240mm. First of all, the low reversed cyclic loading test was conducted for the both walls, whose failure process and failure mode were observed, and what this paper also analyzed their deformation capacity, bearing capacity, hysteretic behavior, ductility, stiffness degeneration, energy dissipation capacity, wall lateral curves and so on. Secondly, in combination with the conclusions of vertical concrete block wall test and sintered brick wall test, the effect of block types on shear strength and ductility was analyzed. Meanwhile, the shear strengths of LHICB walls were calculated. At length, finite element simulation is carried out for the walls of two types used by the separation model and the whole model.
The results indicate that: (1) the both walls show the characteristics of shear failure during the experiment process; (2) the block types have small influence on the ductility of the LHICB walls, and the ductility of the LHICB wall differs slightly from that of the vertical-hole block wall. What’s more, the ductility of the concrete hollow block wall is bigger than that of sintered brick wall; (3) the peak load of cross-shaped blocks wall specimen is bigger than that of H-shaped blocks wall specimen, and energy dissipation capacity of cross-shaped blocks wall is superior to that of H-shaped blocks wall; (4) equivalent plastic strains simulated by ABAQUS is in agreement with the distribution fractures, and the difference rate of peak load between the simulation and experiment result is small.
|柳涛. 不同块型的承重型横孔连锁混凝土砌块墙体的抗震性能[D]. 兰州. 兰州大学,2018.|
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