后張預(yù)應(yīng)力加固無構(gòu)造柱砌體墻抗震性能試驗(yàn)
[Abstract]:The compressive strength of masonry structure is much greater than that of tensile and shear strength, so it is suitable for compression-based members. Because of its large self-weight, brittleness, tensile resistance, shear resistance, low bending capacity and so on, its seismic performance is poor. In view of the large quantity of seismic strengthening and reconstruction of brick masonry structure buildings in rural areas, the shortage of funds and the lack of sources, a new seismic reinforcement technology suitable for existing masonry structures is put forward in view of the present situation of giving full play to the advantages of post-tensioned prestress technology. On this basis, the effectiveness and superiority of the new seismic reinforcement method are verified by the seismic strengthening experiments of five members (1 unreinforced wall and 4 reinforced wall). The test results show that compared with the unstrengthened wall of the same design, the shear capacity, deformation capacity and energy consumption capacity of the post-tensioned prestressed brick masonry wall without structural column are greatly improved, which is more than 2 times higher than that of the unstrengthened wall. The new post-tensioned prestressed reinforcement technology has the advantages of simple construction, easy quality control, short construction period, little influence on the structure and low cost, so it has a broad application prospect.
【作者單位】: 北京交通大學(xué)土木建筑工程學(xué)院;北京市建筑工程研究院有限公司;北京建工集團(tuán)博士后科研工作站;北京建筑大學(xué)土木學(xué)院;
【基金】:中國博士后科學(xué)基金(2014M550020) 北京市博士后基金(2013zz-95)
【分類號】:TU364;TU352.11
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