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(西安建筑科技大學(xué)土木工程學(xué)院， 西安 710055)

摘要: 生土建筑廣泛分布于中國西部地區(qū)，在地震災(zāi)害中，由于房屋倒塌造成嚴(yán)重?fù)p失。 為了改善傳統(tǒng)生土建筑的抗震性能并保留特色民居，采用機(jī)制生土磚和兩種專用砂漿制作墻體，通過擬靜力試驗(yàn)研究新型機(jī)制生土磚砌體墻的抗震性能。 試驗(yàn)結(jié)果表明:砂漿中的固化劑能夠顯著提升墻體的承載能力和變形能力，薄灰縫對墻體的抗震能力削弱效果不顯著。 對墻體的荷載￣位移試驗(yàn)數(shù)據(jù)進(jìn)行無量綱化，并建立四折線骨架曲線模型，對比發(fā)現(xiàn)兩者吻合情況較好。 研究結(jié)果對改善生土建筑的抗震性能，保護(hù)傳統(tǒng)建筑有較好參考價(jià)值。

關(guān)鍵詞: 機(jī)制生土磚； 抗震性能； 恢復(fù)力模型； 擬靜力試驗(yàn)； 砌體結(jié)構(gòu)

中圖分類號:TU398. 7 文獻(xiàn)標(biāo)志碼:A 文章編號:1002￣848X(2022)02￣0135￣05

DOI:10. 19701 / j.jzjg.20200235

Study on seismic performance test and restoring force model of new￣type mechanical raw earth brick masonry wall

ZHOU Tiegang， ZHANG Zaiyu

(School of Civil Engineering， Xi′an University of Architecture and Technology， Xi′an 710055， China)

Abstract: Raw earth buildings are widely distributed in Western China where the collapse of buildings caused serious lossesin the earthquake disasters. In order to improve the seismic performance of traditional raw earth buildings and retain thecharacteristics of residential buildings， mechanical raw earth bricks and two kinds of special mortars were used to buildwalls， and the seismic performance of new￣type mechanical raw earth brick masonry wall was studied through quasi￣statictests. The test results show that the curing agent in mortar can significantly improve the bearing capacity and deformationcapacity of wall， and the weakening effect of thickness of mortar on the seismic capacity of the wall is not significant. Afour￣fold skeleton curve model was established based on the dimensionless load￣displacement test data of the wall， and thecomparison between the model and the test data shows that the two are in good agreement. The results of this study have agood reference value for improving the seismic performance of raw earth buildings and protecting traditional buildings.

Keywords: mechanical raw earth brick； seismic performance； restoring force model； quasi￣static test； masonry structure

∗國家科技支撐計(jì)劃項(xiàng)目(2014BAL06B03)，陜西省科技創(chuàng)新團(tuán)隊(duì)計(jì)劃(2014KCT￣31)，鄉(xiāng)村既有農(nóng)宅安全宜居性能改造關(guān)鍵技術(shù)研究與示范(2020ZDLNY06￣03)。

第一作者:周鐵鋼，博士，教授，博士生導(dǎo)師，主要從事村鎮(zhèn)建筑抗震工作，Email: zhoutiegang@ 126.com。

[引用本文] 周鐵鋼，張?jiān)訇? 新型機(jī)制生土磚砌體墻抗震性能試驗(yàn)及恢復(fù)力模型研究[ J]. 建筑結(jié)構(gòu)，2022，52(2):135￣139，126. ZHOU Tiegang，ZHANG Zaiyu. Study on seismic performance test and restoring force model of new￣typemechanical raw earth brick masonry wall[J]. Building Structure，2022，52(2):135￣139，126.