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(1 揚(yáng)州大學(xué)建筑科學(xué)與工程學(xué)院， 揚(yáng)州 225127； 2 江蘇和天下節(jié)能科技有限公司， 揚(yáng)州 225127)

摘要: 輕骨料混凝土內(nèi)、外葉板間設(shè)置矩形桁架形成暗肋夾芯式預(yù)制混凝土外墻板。 通過(guò)四塊該型墻板的受彎性能靜載試驗(yàn)及數(shù)值模擬，研究暗肋夾芯式預(yù)制外墻板的內(nèi)、外葉板厚度、暗肋設(shè)置狀況對(duì)其在平面外荷載作用下的開(kāi)裂狀況、承載能力和變形性能的影響。 研究結(jié)果表明:增加墻板內(nèi)、外葉板的厚度可以提高開(kāi)裂荷載及極限承載能力；設(shè)置暗肋可提高墻板的整體剛度、開(kāi)裂荷載及承載力，有效改善內(nèi)、外葉墻板協(xié)同工作性能；在墻板水平、豎向同時(shí)設(shè)置暗肋時(shí)，墻板的受力性能改善效果更佳；數(shù)值模型較好地模擬了復(fù)合墻板的承載能力與變形性能，復(fù)合墻板的開(kāi)裂荷載、承載力的理論計(jì)算值與試驗(yàn)值吻合良好，驗(yàn)證了理論計(jì)算方法的可行性。

關(guān)鍵詞: 預(yù)制混凝土外墻板； 暗肋夾芯式； 受彎性能試驗(yàn)； 數(shù)值模擬

中圖分類(lèi)號(hào):TU398+.3 文獻(xiàn)標(biāo)志碼:A 文章編號(hào):1002￣848X(2022)06￣0018￣08

DOI:10. 19701 / j.jzjg. LS210022

Experimental study on the bending performance of concealed rib sandwich precastlightweight aggregate concrete external wallboard

LI Congqi1， YANG Ying1， LIU Hushan2， ZHANG Chao2， ZHUANG Wenan1， WU Hao1

(1 College of Civil Science and Engineering， Yangzhou University， Yangzhou 225127， China； 2 Jiangsu HetianxiaEnergy Saving Technology Co.， Ltd.， Yangzhou 225127， China)

Abstract: The rectangular truss is set between inner and outer slabs of lightweight aggregate concrete to form the concealedrib sandwich precast concrete external wallboard. Based on the static load test and numerical simulation of four wallboards，the influence on the thicknss of the inner and outer slabs and the setting of the concealed ribs on the cracking， bearingcapacity and deformation performance of concealed rib sandwich precast concrete external wallboard was studied. The resultsshow that the cracking load and ultimate bearing capacity can be improved by increasing the thickness on inner and outerslabs of wallboard. The overall stiffness， cracking load， bearing capacity of the wallboard and the cooperative workperformance on the inner and outer slabs can be improved by setting the concealed rib. When concealed ribs are set in bothhorizontal and vertical direction， the mechanical performance of the wallboard can be improved effectively. The numericalmodel can better simulate the bearing capacity and deformation performance of the composite wallboard. The calculatedvalues of cracking load and bearing capacity of composite wallboard are in good agreement with the test values， whichverifies the feasibility of the theoretical calculation method.

Keywords: precast concrete external wallboard； concealed rib sandwich type； bending performance test； numericalsimulation

∗住房和城鄉(xiāng)建設(shè)部科學(xué)技術(shù)計(jì)劃項(xiàng)目(2020￣K￣114)，江蘇省住建廳建設(shè)系統(tǒng)科技項(xiàng)目(2018ZD096)，揚(yáng)州市科技計(jì)劃項(xiàng)目市校合作專(zhuān)項(xiàng)(YZ2020186)。

第一作者:李琮琦，博士，副教授，主要從事預(yù)制裝配式混凝土結(jié)構(gòu)與技術(shù)研究，Email: licq@ yzu.edu.cn。

[引用本文] 李琮琦，楊瀅，劉虎山，等. 暗肋夾芯式預(yù)制輕骨料混凝土外墻板受彎性能試驗(yàn)研究[ J]. 建筑結(jié)構(gòu)，2022，52(6):18￣25，55. LI Congqi，YANG Ying，LIU Hushan，et al. Experimental study on the bending performance ofconcealed rib sandwich precast lightweight aggregate concrete external wallboard[J]. Building Structure，2022，52(6):18￣25，55.