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(1 湖南大學(xué)土木工程學(xué)院, 長(zhǎng)沙 410082; 2 許昌學(xué)院土木工程學(xué)院, 許昌 461000; 3 許昌金科資源再生股份有限公司, 許昌 461000)

摘要: 為研究超薄灰縫燒結(jié)棄土高性能砌塊砌體墻的抗震性能,以豎向壓應(yīng)力、芯柱數(shù)量、芯柱鋼筋數(shù)量作為主要變量參數(shù)設(shè)計(jì)并制作了 4 個(gè)試件,對(duì)其進(jìn)行水平低周反復(fù)加載試驗(yàn)。 分析該類新型墻體在擬靜力荷載作用下的破壞過程和破壞形態(tài),研究其承載力、滯回曲線、骨架曲線、延性、剛度退化、耗能性能等的影響。 試驗(yàn)結(jié)果表明:豎向壓應(yīng)力可明顯影響墻體抗剪承載力、墻體剛度退化速率;芯柱和鋼筋數(shù)量增加對(duì)提高墻體抗剪承載力有顯著作用,同時(shí)充分發(fā)揮其對(duì)砌體墻的約束作用。 該類超薄灰縫燒結(jié)棄土高性能砌塊砌體墻的抗震抗剪承載力滿足規(guī)范和試驗(yàn)擬合公式的要求,可在鄉(xiāng)鎮(zhèn)地區(qū)推廣使用。

關(guān)鍵詞: 燒結(jié)棄土高性能砌塊砌體墻; 剛度退化; 延性; 抗震性能

中圖分類號(hào):TU362 文獻(xiàn)標(biāo)志碼:A 文章編號(hào):1002-848X(2022)13-0140-07

DOI:10. 19701 / j. jzjg. 20201623

Experimental study on seismic behavior of high performance-spoil fired block masonry wall with ultra-thin mortar joint

XUAN Pengcheng1, ZENG Linghong1, HUANG Liang1, SHI Chuxian1, ZHANG Lei2, LI Fuan3, GAO Qi3

(1 College of Civil Engineering, Hunan University, Changsha 410082, China; 2 College of Civil Engineering, Xuchang University, Xuchang 461000, China; 3 Xuchang Jinke Resources Recycling Co. , Ltd. , Xuchang 461000, China)

Abstract: In order to study the seismic behavior of high performance-spoil fired block masonry wall with ultra-thin mortar joint, four specimens were designed and made considering the main variable parameters of the vertical compressive stress, the number of core columns, the number of steel bars of core column, and the horizontal low-cycle reversed loading test was carried out on them. The damage process and failure mode of this new type wall under quasi-static load were analyzed. The influence of load carrying capacity, hysteretic curve, skeleton curve, ductility, stiffness degradation and energy dissipation capacity were also studied. The test results indicate that the vertical compressive stress can significantly affect the shear capacity and the stiffness degradation rate of the wall. With the increasing of the numbers of core column and steel bars, the shear capacity of the wall are significantly enhanced. Meanwhile,its constraint on the masonry wall is fully exerted. The shear capacity of this high performance-spoil fired block masonry wall with ultra-thin mortar joint meets the requirements of the specification and test fitting formula, can be popularized and used in the vast number of villages and towns.

Keywords:high performance-spoil fired block masonry wall; stiffness degradation; ductility; seismic behavior