FCP复合墙板在循环荷载下抗剪性能试验

发布时间：2018-05-28 19:38

本文选题：复合墙板 + 龙骨　；参考：《沈阳建筑大学学报(自然科学版)》2017年06期

【摘要】：目的研究纤维水泥压力复合外墙板在低周往复荷载下的抗剪力学性能,为其在实际工程中应用提供合理的设计依据.方法通过对3面足尺的FCP复合外墙板进行低周往复试验研究,得到各试件的荷载-转角曲线,承载力骨架曲线,极限承载力,转角延性系数,能量耗散系数,抗剪刚度.结果 FCP复合外墙板试件的破坏模式主要表现为:FCP覆面板角部位置破坏,冷弯薄壁型钢龙骨与自攻螺钉连接失效,两侧边框龙骨节点位置冷弯型钢龙骨连接位置破坏.试件延性系数在1.98~6.56,能量耗散系数在0.56~0.71,并得到了试件在层间位移角达到1/300时,对应的抗剪刚度.结论 FCP复合墙板满足正常使用状态下承载力要求.整个加载过程中,墙板试件没有从主体结构脱落.钢龙骨间距对试件侧向抗剪承载力影响不大,窗洞口削弱了试件的侧向抗剪承载力.
[Abstract]:Objective to study the shear mechanical properties of fiber cement pressure composite wall panel under low cycle reciprocating load, and to provide a reasonable design basis for its application in practical engineering. Methods based on the low cycle reciprocating test of three full-scale FCP composite wall panels, the load-rotation curve, bearing capacity curve, ultimate bearing capacity, corner ductility coefficient, energy dissipation coefficient and shear stiffness of each specimen were obtained. Results the failure modes of FCP composite wall plate were mainly as follows: the corner position of the overlying panel was damaged, the connection of cold-formed thin-walled steel keel and self-tapping screw failed, and the joint position of cold-formed steel keel on both sides of border frame keel joint was destroyed. The ductility coefficient is 1.98 ~ 6.56 and the energy dissipation coefficient is 0.56 ~ 0.71. The shear stiffness of the specimen is obtained when the interstory displacement angle reaches 1 / 300. Conclusion FCP composite wall board can meet the requirement of bearing capacity under normal service condition. During the whole loading process, the wallboard specimen did not fall off from the main structure. The steel keel spacing has little effect on the lateral shear bearing capacity of the specimen, but the window hole weakens the lateral shear bearing capacity of the specimen.
【作者单位】：大连理工大学建设工程学部;沈阳建筑大学土木工程学院;
【基金】：国家自然科学基金项目(51408373) 国家重点研发技术课题(2016YFC0701402)
【分类号】：TU317

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