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刘云涛¹ , 王欣荣² ,  高树凯³ ,  郑   博¹ , 黄   河¹

 

( 1. 河北省建筑工程质量检测中心有限公司 , 雄安 071800 ; 2.  泊头市住房和城乡建设局 , 泊头 062150 ;

3. 石家庄市鹿泉区建筑业服务中心 , 石家庄 050200;)

摘  要 :  为了解墙体抗剪强度的变化规律 ,  设计了 5 片尺寸为 1 500 mm× 1 500 mm× 240 mm 的试验墙体 ,  在考虑不同高宽比及竖向压应力下 , 对试验墙体进行了水平对角加载试验 , 获得了不同参数下试验墙体的破坏过程和裂缝发展变化 , 分析了墙体的破坏形态 、荷载-位移曲线及抗剪强度的变化规律 , 并与理论计算抗剪强度进行了对比 。结果表明 : 试验墙体的破坏过程主要分为两个阶段 ,  弹性阶段和破坏阶段 , 无明显屈服点 , 脆性破坏特征明显 ; 墙体破坏后沿对角开裂形成阶梯状斜裂缝 , 按破坏形态分为弯剪破坏和剪压破坏两种 ; 在相同竖向压应力下 , 试验墙体的抗剪强度随高宽比的降低而逐渐增大 ,  而在相同高宽比下 , 试验墙体抗剪强度的变化随竖向压应力的增大先上升后下降 ;  与理论计算抗剪强度相比 , 试验计算抗剪强度偏高 , 其相对比值在 1. 1 ~ 1. 4 之间 。研究结果要为相关工程提供参考。

关键词 : 整片墙体 ; 抗剪强度 ; 墙体高宽比 ; 竖向压应力 ; 破坏形态

中图分类号 : TU522           文献标志码 : A           文章编号 :  1005- 8249  (2026)  03-0145-06

DOI :10. 19860/j. cnki. issn1005- 8249. 2026. 03. 024

LIU Yuntao¹ , WANG Xinrong² , GAO Shukai³ , ZHENG Bo² , HUANG He²

( 1. Hebei Construction Engineering Quality Inspection Center Co. , Ltd. ,  Xiong ’an 071800 , China;

2. Botou City Bureau of Housing and Urban-Rural Development ,  Botou 062150 , China;

3. Shijiazhuang Luquan District Construction Industry Service Center ,  Shijiazhuang 050200 , China)

Abstract :  In order to understand the variation law of the  shear strength of the entire wall , five test walls with dimensions of 1 500 mm ×  1 500 mm × 240 mm were designed.   Considering different aspect ratios and vertical compressive stresses , horizontal diagonal loading tests were carried out on the test walls.   The  failure  processes and crack development and changes of the test walls under different parameters were obtained.   The  failure  modes , load- displacement  curves  and variation laws of the  shear strength of the walls were analyzed , and a comparison was made with the theoretically  calculated  shear  strength.   The  results show that : the failure process of the test walls is mainly divided into two stages , namely the elastic stage and the failure stage , with no obvious yield point and obvious brittle failure characteristics ; after the walls are damaged , diagonal cracks are formed   along the diagonal to form stepped oblique cracks , and the failure modes are divided into two types : flexural-shear failure and shear-compression failure ; under the same vertical compressive stress , the shear strength of the test walls gradually increases as the aspect ratio decreases , while under the same aspect ratio , the change in the shear strength of the test walls first increases and then decreases with the increase in the vertical compressive stress ; compared with the theoretically calculated shear strength , the experimentally calculated shear strength is relatively higher , and the relative ratio is between 1. 1 and 1. 4.   The research results can provide refence for relevant engineering projects.

Key words :  the whole wall;  shear strength;  aspect ratio of the wall;  vertical compressive stress ; failure mode