高级检索
    杨小军, 郝丹, 付帅, 王佳阳, 张璐, 俞奕豪. 木塑集成木构框剪墙体抗侧性能试验研究[J]. 北京林业大学学报, 2020, 42(5): 155-163. DOI: 10.12171/j.1000-1522.20190391
    引用本文: 杨小军, 郝丹, 付帅, 王佳阳, 张璐, 俞奕豪. 木塑集成木构框剪墙体抗侧性能试验研究[J]. 北京林业大学学报, 2020, 42(5): 155-163. DOI: 10.12171/j.1000-1522.20190391
    Yang Xiaojun, Hao Dan, Fu Shuai, Wang Jiayang, Zhang Lu, Yu Yihao. Lateral resistance of wood frame shear walls integrated with wood-plastic composites[J]. Journal of Beijing Forestry University, 2020, 42(5): 155-163. DOI: 10.12171/j.1000-1522.20190391
    Citation: Yang Xiaojun, Hao Dan, Fu Shuai, Wang Jiayang, Zhang Lu, Yu Yihao. Lateral resistance of wood frame shear walls integrated with wood-plastic composites[J]. Journal of Beijing Forestry University, 2020, 42(5): 155-163. DOI: 10.12171/j.1000-1522.20190391

    木塑集成木构框剪墙体抗侧性能试验研究

    Lateral resistance of wood frame shear walls integrated with wood-plastic composites

    • 摘要:
      目的以木塑为主要材料将木塑与木结构相结合,探索一种基于木结构的木塑建筑,是克服现有轻钢结构木塑建筑不足的一个重要途径。墙体抗侧性能是决定木塑建筑在地震灾害作用下能否安全的重要因素,研究木塑集成木构框剪墙体抗侧性能可以为维护木塑建筑安全提供科学依据。
      方法设计了5片普通木塑集成框剪墙体和3片带斜撑的木塑集成框剪墙体,通过低周反复加载试验方法,研究了墙体的抗侧刚度、抗剪强度、立柱上拔量、刚度退化和单位耗能。
      结果木塑集成木构墙体的抗侧性能主要取决于木塑材结构支撑方式和覆面板连接方式,其破坏特征表现为覆面板钉连接失效破坏和木塑材连接节点断裂破坏。对于普通墙体,面板钉间距为75 mm时,墙体的抗剪强度、抗侧刚度和单位耗能分别比普通常规墙体的高出了35.40%、16.88%和76.22%。带斜撑墙体抗侧性能均明显优于普通常规墙体,木塑材人型撑和K型撑墙体的抗侧性能均与钢条剪刀撑墙体的相当,其中木塑材K型撑墙体抗侧刚度和单位耗能分别比钢条剪刀撑的高出了14.76%和16.44%,抗剪强度比钢条剪刀撑墙体的低了11.34%。覆面板厚度、斜撑和面板钉连接方式对墙体的约束作用能显著减小墙体框架立柱的上拔。
      结论木塑材集成方式是墙体抗侧性能的重要影响因素,采用框剪结构,增加斜撑和提高面板钉连接可靠性,能充分发挥木塑材料的优异性能,使墙体满足木塑建筑抗震要求。

       

      Abstract:
      ObjectiveUsing wood-plastic composites (WPC) as the main material to combine WPC with wood structure, exploring a WPC building based on wood structure is an important way to overcome the shortcomings of existing WPC building based on light steel structure. The lateral resistance of the wall is an important factor determining the safety of WPC building under the earthquake disaster. Studying the lateral resistance of wood frame-shear wall integrated with WPC provides a basis for maintaining the safety of WPC building.
      MethodFive ordinary frame-shear walls integrated with WPC and three frame-shear walls with diagonal brace were designed. Through the low-cycle loading test method, the lateral stiffness, shear strength, uplift of the column, stiffness degradation and unit energy consumption of the walls were studied.
      ResultThe lateral resistance of the WPC integrated wood walls mainly depended on the structural support of the WPC and the connection of the wall panels. The failure characteristics of the walls were the failure of scew connection and the fracture of WPC joints. For ordinary wall, the shear strength, lateral stiffness and unit energy consumption of the wall with 75 mm in slab screw spacing were 35.40%, 16.88% and 76.22% higher than those of the conventional wall, respectively. The lateral performance of the walls with diagonal brace was obviously superior to the ordinary conventional wall. The lateral resistance of the Λ-type bracing wall and the K-type bracing wall was similar to the X-type bracing wall. The lateral stiffness and unit energy consumption of the K-type bracing wall were 14.76% and 16.44% higher than the X-type bracing wall, respectively. And its shear strength was 11.34% lower than the latter. The restraint effect of the thickness of wall panel, diagonal bracing and slab screw connection on the wall could significantly reduce the uplift of the wall frame columns.
      ConclusionThe WPC integration method is an important factor affecting the wall’s lateral performance. Adopting frame-shear structure, setting up diagonal bracing and improving the reliability of slab srew connection can full exert the excellent performance of WPC and make the WPC integrated wall meet the seismic requirements of WPC buildings.

       

    /

    返回文章
    返回