BFRP拉结件预制混凝土夹心保温外墙板抗弯性能试验研究

发布时间：2018-02-09 14:08

本文关键词： BFRP 拉结件预制夹心保温外墙板抗弯性能裂缝　出处：《工程力学》2017年S1期 　论文类型：期刊论文

【摘要】：BFRP拉结件预制混凝土夹心保温外墙板是一种新型的非承重保温外墙板,其与主体结构之间采用上部线支撑、下部点支撑的连接方式,BFRP拉结件按照斜向八字形设置。为了评估该类外墙板在风荷载、水平地震作用等平面外荷载作用下的受力和变形性能,以合肥某工程项目为背景,通过五片足尺外墙板拟静力试验,以研究外墙板的平面外抗弯性能。试验研究结果表明:外墙板底部点支撑的个数和间距对其平面外抗弯性能影响显著,并提出了点支撑建议间距;当点支撑设置合理时,该外墙板具有较好的承载力、延性和抗裂性能;当带有门窗洞口时,其墙板洞口角部易出现斜向裂缝,出现裂缝的荷载级别远小于不开洞外墙板。
[Abstract]:The prefabricated concrete sandwich thermal insulation outer wall panel with BFRP tie piece is a new type of non-load-bearing insulation wall board, which is supported by the upper line between the wall board and the main structure. In order to evaluate the stress and deformation behavior of this kind of outer wall board under the action of wind load, horizontal earthquake and other out-of-plane loads, the BFRP tie piece is arranged according to the diagonal eight zigzag shape. In order to evaluate the force and deformation performance of this kind of outer wall board under the action of wind load, horizontal earthquake, etc., taking a project in Hefei as the background, Through the quasi-static test of five full-scale outer wall panels, the out-of-plane flexural properties of the outer wall panels are studied. The experimental results show that the number and spacing of the supports at the bottom of the outer wall panels have a significant effect on the out-of-plane flexural properties of the outer wall panels. At the same time, the suggested spacing of point support is put forward; when the point support is set reasonably, the outer wall board has better bearing capacity, ductility and crack resistance, and when the door and window hole is in place, the corner of the wall board orifice is prone to appear oblique cracks. The load level of cracks is much smaller than that of outside walls without holes.
【作者单位】：合肥工业大学土木与水利工程学院;长沙远大住宅工业安徽有限公司;
【基金】：国家自然科学基金项目(51278519,51408179)
【分类号】：TU528.72;TU551

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