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通过3片机器切割料石无垫片砌筑石墙和1片粗料石干砌甩浆砌筑石墙的低周反复荷载试验,研究了机切料石无垫片砌筑石墙抗震性能及其与传统干砌甩浆砌筑石墙在受力性能上的差异。主要研究参数包括砌筑砂浆强度、灰缝界面处理方式和灰缝水平配筋。通过对试验现象及结果的对比,分析了不同界面处理方式和砌筑方法墙体的破坏形态、滞回曲线、骨架曲线、变形能力、耗能能力和刚度退化等。试验结果表明:同干砌甩浆石墙相比,机切无垫片石墙的极限荷载均有较大幅度提高;同时设置U形钢筋剪力键和水平配筋及仅在灰缝设置U形钢筋剪力键的两种砌筑灰缝增强方式对墙体承载力影响不大,但能够提高墙体的变形和耗能能力,其中增加水平配筋的界面增强方式提高的幅度较大。
Through the low-cycle repeated loading tests of 3 machines for cutting stone-stone without shims and 1 coarse-grained stone-dry masonry stone masonry wall, the seismic performance of machine-cut stone without shims was studied. And the difference between the mechanical properties and traditional dry-laying slurry-masonry stone walls. The main research parameters include the strength of masonry mortar, the treatment of mortar joints and the horizontal reinforcement of mortar joints. Through the comparison of test phenomena and results, the failure mode, hysteresis curve, skeleton curve, deformation capacity, energy dissipation capacity and stiffness degradation of the wall with different interface treatments and masonry methods are analyzed. The test results show that the ultimate load of machine-cut non-shims stone wall is greatly improved compared with the dry mortar wall, and the U-shaped steel bar shear force and horizontal reinforcement are set at the same time and the U The two kinds of reinforcement joints of reinforced concrete shear bond have little effect on the bearing capacity of the wall, but can improve the deformation and energy dissipation capacity of the wall, and the increase of the interface reinforcement method with the horizontal reinforcement increases a lot.