(1 扬州大学建筑科学与工程学院， 扬州 225127； 2 江苏和天下节能科技有限公司， 扬州 225127)

摘要: 轻骨料混凝土内、外叶板间设置矩形桁架形成暗肋夹芯式预制混凝土外墙板。 通过四块该型墙板的受弯性能静载试验及数值模拟，研究暗肋夹芯式预制外墙板的内、外叶板厚度、暗肋设置状况对其在平面外荷载作用下的开裂状况、承载能力和变形性能的影响。 研究结果表明:增加墙板内、外叶板的厚度可以提高开裂荷载及极限承载能力；设置暗肋可提高墙板的整体刚度、开裂荷载及承载力，有效改善内、外叶墙板协同工作性能；在墙板水平、竖向同时设置暗肋时，墙板的受力性能改善效果更佳；数值模型较好地模拟了复合墙板的承载能力与变形性能，复合墙板的开裂荷载、承载力的理论计算值与试验值吻合良好，验证了理论计算方法的可行性。

关键词: 预制混凝土外墙板； 暗肋夹芯式； 受弯性能试验； 数值模拟

中图分类号:TU398+.3 文献标志码:A 文章编号: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

∗住房和城乡建设部科学技术计划项目(2020￣K￣114)，江苏省住建厅建设系统科技项目(2018ZD096)，扬州市科技计划项目市校合作专项(YZ2020186)。

第一作者:李琮琦，博士，副教授，主要从事预制装配式混凝土结构与技术研究，Email: licq@ yzu.edu.cn。

[引用本文] 李琮琦，杨滢，刘虎山，等. 暗肋夹芯式预制轻骨料混凝土外墙板受弯性能试验研究[ J]. 建筑结构，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.