FCP外挂板在低周反复荷载下抗震性能试验研究
发布时间：2018-11-21 18:30
【摘要】：在工业和民用建筑中通常采用工厂预制的外挂墙板进行现场安装作为其外墙围护体系,外挂墙板与主体结构之间通常采用连接件进行连接,预制好的外挂板运输到施工现场后,只要通过简单安装便可,省去了很多工序,所以这样既保证施工质量,又可以节省工期、加快施工进度。本文研究的外挂板叫做水泥纤维外挂板(简称FCP外挂板),是由水泥纤维板和钢龙骨组成,内部填充保温岩棉,这种外挂板质量较轻,保温隔热性能良好。本文对平面内的600mm和800mm龙骨间距的FCP外挂板、以及600mm龙骨间距开洞口的FCP外挂墙板本身进行了低周反复荷载作用下的抗震性能的试验研究,本试验的这种连接形式能够合理的利用了外挂板的强度和刚度。同时进行了扩大参数的数值模拟分析,探究外挂板本身的承载能力和延性,得到了以下结论:(1)对三块外挂板进行了平面内低周往复荷载试验,分析了墙板的破坏形式,试验结果表明:在加载至屈服位移时,外挂板内侧的水泥纤维板左下角和右下角分别出现45度裂缝,裂缝方向垂直于对角线方向;连接外挂板与主体结构的U型连接件周围的水泥纤维板也出现横向裂缝;当加载至破坏位移时,裂缝持续开展,外挂板内侧角部的水泥纤维板有少量的脱落。试验结束后,将试件取下,发现与主体结构连接处外挂板内的边龙骨被剪坏。(2)对比了三块墙板的承载能力、刚度退化、强度退化、延性系数等,得到600龙骨间距的外挂板比800龙骨间距的外挂板的承载力增加了 3%,600龙骨间距的外挂板比800龙骨间距的外挂板的延性系数增加了 10%;同时通过对600mm龙骨间距未开洞口和开洞口的两块外挂板比较可知,未开洞口的外挂板比开洞口的外挂板的承载力高50%,说明开洞对FCP外挂板的抗震承载能力影响较大,开洞口的外挂板的延性好于未开洞口,这是由于洞口两侧增加了横向龙骨。(3)本次试验得到的FCP外挂板的延性系数范围为2.1～2.5,屈服位移角θy=1.14～1.714[θe],极限位移角θu=0.228～0.4[θp],通过比较,可知此FCP外挂板的延性不好。针对FCP外挂板的特性,建议研究合适的连接件形式,使外挂板在弹性阶段,可以参与结构受力,在弹塑性阶段,应用合适的连接件形式,使其有一定的适应主体结构变形的能力,减少此外挂板的受力。(4)对龙骨间距为600的FCP外挂板的标准板带进行ABAQUS有限元模拟,水泥纤维板采用实体单元,钢龙骨采用壳单元,得到的结论与试验结论一致,验证了有限元模型的正确性;同时通过对比300mm龙骨间距、600mm龙骨间距、900mm龙骨间距标准板带的承载能力和延性,得到以下结论:外挂板的龙骨间距越小,其中的一个标准板带的承载力越小,延性越好,说明与龙骨相比,水泥纤维板对承载力的贡献更大,但水泥纤维板面积的增加对其延性却有削弱的作用;同时发现增加水泥纤维板的厚度,其承载力变大,所以为提高承载力可以适当的增加板厚;但是板的厚度增加后,延性变差,所以水泥纤维板的厚度不宜过厚。
[Abstract]:In that industrial and civil construction, a factory-made external wall panel is generally adopt for field installation as an external wall enclosure system, and the external wall panel and the main body structure are normally connected by a connecting piece, so that the construction quality can be ensured, the construction period can be saved, and the construction progress can be accelerated. The external wall of this paper is called the external wall of the cement fiber (FCP store). It is made up of cement fibreboard and steel keel. It is filled with heat-insulating rock wool. It is of light quality and good heat-insulating performance. This paper studies the anti-seismic performance of the FCP plug-in plate with the spacing of 600mm and 800mm in the plane, and the FCP plug-in wall panel of the 600mm keel space-opening hole, which can reasonably utilize the strength and rigidity of the plug-in plate. At the same time, the numerical simulation and analysis of the expanded parameters are carried out, and the bearing capacity and ductility of the plug-in plate are investigated. The following conclusions are obtained: (1) The test of the low-weekly reciprocating load in the plane is carried out for three external stores, and the damage form of the wall panel is analyzed. The test results show that: at the time of loading to yield displacement, the lower left corner and the lower right corner of the cement fiberboard on the inner side of the plug-in plate are respectively 45-degree cracks, and the direction of the crack is perpendicular to the diagonal direction; and transverse cracks also occur in the cement fiberboard around the U-shaped connecting piece of the external plug-in plate and the main body structure; When the crack is loaded to the breaking displacement, the crack is continuously carried out, and the cement fiber board at the inner corner part of the external hanging plate has a small amount of shedding. At the end of the test, the test piece was taken to find that the side keels in the pylon at the junction with the body structure were cut. and (2) the bearing capacity, the stiffness degradation, the strength degradation, the ductility coefficient and the like of the three wall plates are compared, and the bearing capacity of the external hanging plate with the spacing of the 600-keel is increased by 3 percent, The ductility factor of the external-store plate with the spacing of 600-keels is increased by 10% than that of the external-store plate with the spacing of 800-keels; at the same time, by comparing the two external-store plates with no opening and opening at the spacing of 600mm, the plug-in plate with no opening is 50% higher than the bearing capacity of the plug-in plate of the opening hole, It is shown that the effect of opening hole on the seismic bearing capacity of the external wall of the FCP is large, and the ductility of the plug-in plate of the opening is good than that of the opening, which is due to the addition of the transverse keels on both sides of the opening. (3) The ductility coefficient of the FCP plug-in plate obtained in this test is 2.1 ~ 2.5, the yield and displacement angle, y = 1.14 ~ 1.714[199e], and the limit displacement angle (u = 0.228 ~ 0.4[[p] p], and it can be seen that the ductility of this FCP plug-in plate is not good. According to the characteristics of the FCP plug-in plate, it is suggested to study the appropriate form of the connecting piece, so that the external hanging plate can be involved in the structural stress during the elastic phase. In the elastic-plastic phase, the appropriate connecting piece can be applied to make it possible to adapt to the deformation of the main structure and to reduce the force of the hanging plate. (4) ABAQUS finite element simulation is carried out on the standard strip of the FCP plug-in plate with the keel spacing of 600, the solid unit is adopted for the cement fibreboard, and the steel keel is used as the shell unit, and the obtained conclusion is consistent with the test conclusion, and the correctness of the finite element model is verified; At the same time, by comparing the bearing capacity and the ductility of the 300 mm keel space, the 600mm keel space and the 900mm keel spacing standard strip, the following conclusion is obtained: the smaller the keel spacing of the plug-in plate, the smaller the bearing capacity of one of the standard strips, the better the ductility, the description is compared with the keel, the contribution of the cement fiber board to the bearing capacity is larger, but the increase of the area of the cement fiber board is weakened by the ductility of the cement fiber board; meanwhile, the thickness of the cement fiber board is increased, and the bearing capacity of the cement fiber board is large, so that the plate thickness can be properly increased for improving the bearing capacity; but after the thickness of the plate is increased, The ductility is poor, so the thickness of the cement fibreboard is not too thick.
【学位授予单位】：沈阳建筑大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TU352.11
本文编号：2347905
[Abstract]:In that industrial and civil construction, a factory-made external wall panel is generally adopt for field installation as an external wall enclosure system, and the external wall panel and the main body structure are normally connected by a connecting piece, so that the construction quality can be ensured, the construction period can be saved, and the construction progress can be accelerated. The external wall of this paper is called the external wall of the cement fiber (FCP store). It is made up of cement fibreboard and steel keel. It is filled with heat-insulating rock wool. It is of light quality and good heat-insulating performance. This paper studies the anti-seismic performance of the FCP plug-in plate with the spacing of 600mm and 800mm in the plane, and the FCP plug-in wall panel of the 600mm keel space-opening hole, which can reasonably utilize the strength and rigidity of the plug-in plate. At the same time, the numerical simulation and analysis of the expanded parameters are carried out, and the bearing capacity and ductility of the plug-in plate are investigated. The following conclusions are obtained: (1) The test of the low-weekly reciprocating load in the plane is carried out for three external stores, and the damage form of the wall panel is analyzed. The test results show that: at the time of loading to yield displacement, the lower left corner and the lower right corner of the cement fiberboard on the inner side of the plug-in plate are respectively 45-degree cracks, and the direction of the crack is perpendicular to the diagonal direction; and transverse cracks also occur in the cement fiberboard around the U-shaped connecting piece of the external plug-in plate and the main body structure; When the crack is loaded to the breaking displacement, the crack is continuously carried out, and the cement fiber board at the inner corner part of the external hanging plate has a small amount of shedding. At the end of the test, the test piece was taken to find that the side keels in the pylon at the junction with the body structure were cut. and (2) the bearing capacity, the stiffness degradation, the strength degradation, the ductility coefficient and the like of the three wall plates are compared, and the bearing capacity of the external hanging plate with the spacing of the 600-keel is increased by 3 percent, The ductility factor of the external-store plate with the spacing of 600-keels is increased by 10% than that of the external-store plate with the spacing of 800-keels; at the same time, by comparing the two external-store plates with no opening and opening at the spacing of 600mm, the plug-in plate with no opening is 50% higher than the bearing capacity of the plug-in plate of the opening hole, It is shown that the effect of opening hole on the seismic bearing capacity of the external wall of the FCP is large, and the ductility of the plug-in plate of the opening is good than that of the opening, which is due to the addition of the transverse keels on both sides of the opening. (3) The ductility coefficient of the FCP plug-in plate obtained in this test is 2.1 ~ 2.5, the yield and displacement angle, y = 1.14 ~ 1.714[199e], and the limit displacement angle (u = 0.228 ~ 0.4[[p] p], and it can be seen that the ductility of this FCP plug-in plate is not good. According to the characteristics of the FCP plug-in plate, it is suggested to study the appropriate form of the connecting piece, so that the external hanging plate can be involved in the structural stress during the elastic phase. In the elastic-plastic phase, the appropriate connecting piece can be applied to make it possible to adapt to the deformation of the main structure and to reduce the force of the hanging plate. (4) ABAQUS finite element simulation is carried out on the standard strip of the FCP plug-in plate with the keel spacing of 600, the solid unit is adopted for the cement fibreboard, and the steel keel is used as the shell unit, and the obtained conclusion is consistent with the test conclusion, and the correctness of the finite element model is verified; At the same time, by comparing the bearing capacity and the ductility of the 300 mm keel space, the 600mm keel space and the 900mm keel spacing standard strip, the following conclusion is obtained: the smaller the keel spacing of the plug-in plate, the smaller the bearing capacity of one of the standard strips, the better the ductility, the description is compared with the keel, the contribution of the cement fiber board to the bearing capacity is larger, but the increase of the area of the cement fiber board is weakened by the ductility of the cement fiber board; meanwhile, the thickness of the cement fiber board is increased, and the bearing capacity of the cement fiber board is large, so that the plate thickness can be properly increased for improving the bearing capacity; but after the thickness of the plate is increased, The ductility is poor, so the thickness of the cement fibreboard is not too thick.
【学位授予单位】：沈阳建筑大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TU352.11
【参考文献】
相关期刊论文 前10条
1 于敬海;张刚;李久鹏;;外挂墙板对框架结构内力的影响分析[J];低温建筑技术;2011年08期
2 金勇;程才渊;;蒸压加气混凝土墙板与主框架的连接构件性能试验研究[J];建筑砌块与砌块建筑;2008年04期
3 张建新,刘雁,环志中;国外钢结构住宅的发展历史浅析[J];钢结构;2005年04期
4 李国强,王城;外挂式和内嵌式ALC墙板钢框架结构的滞回性能试验研究[J];钢结构;2005年01期
5 张小玲;钢结构住宅外围护结构设计应考虑的问题[J];工程建设与设计;2005年02期
6 汪培明;我国墙体材料的现状及展望[J];理工高教研究;2004年06期
7 李国强,赵欣,孙飞飞,高文利,杨尊权,靳世文;钢结构住宅体系墙板及墙板节点足尺模型振动台试验研究[J];地震工程与工程振动;2003年01期
8 董军,夏冰青,马宏,于旭;NAFC、LCFC板及其与轻钢龙骨自攻螺栓连接性能[J];南京工业大学学报(自然科学版);2002年05期
9 刘岩,朱浮声,张继平;我国新型墙体的发展现状及趋势展望[J];辽宁建材;2002年02期
10 罗健;钢筋混凝土外挂板摩擦恢复力特性试验及减震效果[J];北京建筑工程学院学报;1997年02期
相关硕士学位论文 前2条
1 李久鹏;工业化住宅外挂墙板耗能减震性能研究[D];天津大学;2009年
2 杨立威;钢结构节能住宅围护体系研究[D];山东科技大学;2006年
，本文编号：2347905
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