暗肋夹芯式预制轻骨料混凝土外墙板受弯性能试验研究
引用文献：
李琮琦 杨滢 刘虎山 张超 庄文安 吴昊. 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，2022，48（06）：18-25，55.
LI Congqi YANG Ying LIU Hushan ZHANG Chao ZHUANG Wenan WU Hao. Experimental study on the bending performance of concealed rib sandwich precast lightweight aggregate concrete external wallboard[J]. Building Structure，2022,48（06）：18-25，55.
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
基金：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)。
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[4] LOSCH E D,HYNES P W,ANDREWS R J.State of the art of precast/prestressed concrete sandwich wall panels[J].PCI Journal,1997,42(2):1-61.
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[6] GANAPATHI S C,PETER,J A,LAKSHMANAN N,et al.Behavior of light weight sandwich panels under out of plane bending loading[J].Steel and Composite Structures,2016,21(4):775-789.
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[8] 孟宪宏，周阿龙，刘海成.夹心保温外墙板连接件力学性能试验[J].沈阳建筑大学学报(自然科学版),2014(2):227-234.
[9] FERNANDO P,JAYASINGHE M,JAYASINGHE C.Structural feasibility of expanded polystyrene(EPS)based lightweight concrete sandwich wall panels[J].Construction and Building Materials,2017,139(15):45-51.
[10] LEE B J,PESSIKI S.Experimental evaluation of precast,prestressed concrete,three-wythe sandwich wall panels[J].PCI Journal,2007,52(4):70-83.
[11] 种迅，王子杨，蒋庆.玻璃纤维复材筋拉结预制混凝土夹芯墙板平面外抗弯性能研究[J].工业建筑，2017,47(7):40-45,51.
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[16] 蓝宗建，朱万福.混凝土结构与砌体结构[M].4版.南京：东南大学出版社，2016.
[17] 吴方伯，邓利斌，刘彪，等.四边简支单向预应力双向配筋混凝土叠合楼板试验研究[J].建筑结构，2014,44(5):6-11.
Experimental study on the bending performance of concealed rib sandwich precast lightweight aggregate concrete external wallboard
Abstract: The rectangular truss is set between inner and outer slabs of lightweight aggregate concrete to form the concealed rib 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, bearing capacity and deformation performance of concealed rib sandwich precast concrete external wallboard was studied. The results show that the cracking load and ultimate bearing capacity can be improved by increasing the thickness on inner and outer slabs of wallboard. The overall stiffness, cracking load, bearing capacity of the wallboard and the cooperative work performance on the inner and outer slabs can be improved by setting the concealed rib. When concealed ribs are set in both horizontal and vertical direction, the mechanical performance of the wallboard can be improved effectively. The numerical model can better simulate the bearing capacity and deformation performance of the composite wallboard. The calculated values of cracking load and bearing capacity of composite wallboard are in good agreement with the test values, which verifies the feasibility of the theoretical calculation method.
Keywords: precast concrete external wallboard; concealed rib sandwich type; bending performance test; numerical simulation
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