固废基无筋芯柱约束互锁砌块墙体抗震性能研究  

Seismic performance study of solid waste-based unreinforced core column confined interlocking block walls

作　　者：熊凯 夏多田[1,2] 缪丰羽 XIONG Kai;XIA Duotian;MIAO Fengyu(College of Water Conservancy&Architectural Engineering,Shihezi University,Shihezi 832003,China;Xinjiang Production&Construction Groups Engineering Laboratory for Seismic and Energy-Saving Building in High Earthquake Intensity and Cold Zone,Shihezi 832003,China)

机构地区：[1]石河子大学水利建筑工程学院,新疆石河子832003 [2]新疆兵团高烈度寒区建筑抗震节能技术工程实验室,新疆石河子832003

出　　处：《自然灾害学报》2025年第2期209-220,共12页Journal of Natural Disasters

基　　金：国家自然科学基金项目(52168026,51468057)。

摘　　要：为解决传统砌体结构自重大,施工工序复杂的问题,因地制宜地提出了固废基无筋芯柱约束互锁砌块墙体。为研究其抗震性能,对6片墙体试件进行了拟静力试验,分析了竖向压应力、高宽比和芯柱类型等因素对墙体抗震性能的影响。结果表明:增大竖向压应力和高宽比使墙体破坏形态发生转变,增大竖向压应力使刚度退化减缓,最大提升35.9%的耗能能力,增大高宽比使延性系数提升8.1%,但当竖向压应力大于0.45 MPa或高宽比大于2.03时对墙体抗震不利;掺入纤维的固废基芯柱在承载力方面比普通无筋墙体最大提升122.7%,与配筋墙体最小仅3.4%的差距,而且延性更好;竖向砂浆层的缺少,降低了互锁砌块墙体的初裂荷载和初始刚度,但是互锁砌块墙体在耗能和延性方面比普通砌块墙体要好。给出了基本完好、严重破坏、倒塌破坏对应的层间位移角建议限值以评估墙体抗震性能。根据GB 50003—2011《砌体结构设计规范》提出了适合该类型墙体的抗剪承载力计算公式,以期为后续的新型砌块墙体的抗震性能研究及工程应用提供了科学依据。To solve the problems of heavy self-weight and complex construction procedures of traditional masonry structures,a waste-based unreinforced core column confined interlocking block wall is proposed in accordance with local conditions.To study its seismic performance,quasi-static tests were conducted on six wall specimens,and the influences of factors such as vertical compressive stress,height-width ratio and core column type on the seismic performance of the wall were analyzed.The results show that increasing the vertical compressive stress and height-width ratio changes the failure mode of the wall.Increasing the vertical compressive stress slows down the stiffness degradation and maximally increases the energy dissipation capacity by 35.9%.Increasing the height-width ratio increases the ductility coefficient by 8.1%.However,when the vertical compressive stress is greater than 0.45 MPa or the height-width ratio is greater than 2.03,it is unfavorable for the seismic resistance of the wall.The waste-based core column with fiber added has the maximum increase of 122.7%in bearing capacity compared with the ordinary unreinforced wall,and there is only the minimum gap of 3.4%compared with the reinforced wall.Moreover,it has better ductility.The lack of vertical mortar layer reduces the initial cracking load and initial stiffness of the interlocking block wall.However,the interlocking block wall is better than the ordinary block wall in terms of energy consumption and ductility.The recommended limit values of inter-story drift angles corresponding to basically intact,severely damaged and collapsed damage are given to evaluate the seismic performance of the wall.According to the Code for design of masonry structures(GB 50003—2011),a calculation formula for shear bearing capacity suitable for this type of wall is proposed to provide a scientific basis for the subsequent research on seismic performance and engineering application of new block walls.

关 键 词：棉秆纤维 煤基灰渣 互锁砌块 无筋芯柱 抗震性能 

分 类 号：TU365[建筑科学—结构工程] TU398