以UHPC加固历史建筑砌体墙的伪静力试验研究
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摘要
为研究超高性能混凝土(UHPC)在历史砖砌体墙加固方面的应用效果,设计制作了2片砌筑砂浆强度低于1 MPa的仿历史砖墙,其中一片砌筑后不加固,在进行试验破坏后再用UHPC加固,另外一片砌筑后直接用UHPC加固。通过伪静力试验,研究了用UHPC加固低强度历史砖墙后对其破坏模式、受剪承载能力和变形的影响。结果表明:采用厚40 mm的UHPC加固后的墙体抗剪承载力是加固前的2倍多,固化效果明显。
In order to study the application effect of UHPC on the reinforcement of historic masonry walls, two pieces of imitated historic masonry walls with mortar strength less than 1 MPa were designed and made, one of which was not reinforced, and after its damage test, it was then reinforced with UHPC, while another one was directly reinforced with UHPC before the test. Through pseudo-static test, the effects of their failure pattern, shear capacity and deformation on the UHPC-reinforced low-strength historic masonry walls were studied. The results show that the shear strength of the wall reinforced with 40 mm thick UHPC later is 2 times more than that without UHPC reinforcement and it has an obvious solidification effect.
In order to study the application effect of UHPC on the reinforcement of historic masonry walls, two pieces of imitated historic masonry walls with mortar strength less than 1 MPa were designed and made, one of which was not reinforced, and after its damage test, it was then reinforced with UHPC, while another one was directly reinforced with UHPC before the test. Through pseudo-static test, the effects of their failure pattern, shear capacity and deformation on the UHPC-reinforced low-strength historic masonry walls were studied. The results show that the shear strength of the wall reinforced with 40 mm thick UHPC later is 2 times more than that without UHPC reinforcement and it has an obvious solidification effect.
引文
[1]冯军骁,郑七振,龙莉波,等.超高性能混凝土连接的预制梁受弯性能试验研究[J].工业建筑,2017,47(8):59-65.
[2]邵旭东,詹豪,雷薇,等.超大跨径单向预应力UHPC连续箱梁桥概念设计与初步实验[J].土木工程学报,2013,46(8):83-89.
[3]唐曹明,罗瑞,程绍革,等.水泥砂浆及钢筋网水泥砂浆单面加固低强度砖墙抗震性能试验研究[J].建筑结构学报,2017,38(10):157-167.
[4]王涛,张永群,陈曦,等.基于装配式技术加固的砌体墙片的力学性能研究[J].工程力学,2014,31(8):144-153.
[5]邓明科,樊鑫淼,高晓军,等.ECC面层加固受损砖砌体墙抗震性能试验研究[J].工程力学,2015,32(4):120-129.
[6]王兴旺.UHPC与普通钢筋混凝土结构界面抗剪性能研究[D].长沙:湖南大学,2016.
[7]樊鑫淼.ECC面层加固砖砌体结构抗震性能试验研究及理论分析[D].西安:西安建筑科技大学,2014.
[2]邵旭东,詹豪,雷薇,等.超大跨径单向预应力UHPC连续箱梁桥概念设计与初步实验[J].土木工程学报,2013,46(8):83-89.
[3]唐曹明,罗瑞,程绍革,等.水泥砂浆及钢筋网水泥砂浆单面加固低强度砖墙抗震性能试验研究[J].建筑结构学报,2017,38(10):157-167.
[4]王涛,张永群,陈曦,等.基于装配式技术加固的砌体墙片的力学性能研究[J].工程力学,2014,31(8):144-153.
[5]邓明科,樊鑫淼,高晓军,等.ECC面层加固受损砖砌体墙抗震性能试验研究[J].工程力学,2015,32(4):120-129.
[6]王兴旺.UHPC与普通钢筋混凝土结构界面抗剪性能研究[D].长沙:湖南大学,2016.
[7]樊鑫淼.ECC面层加固砖砌体结构抗震性能试验研究及理论分析[D].西安:西安建筑科技大学,2014.