含三明治外挂墙板预制装配式混凝土剪力墙结构抗震性能研究

发布时间：2018-01-13 12:50

本文关键词：含三明治外挂墙板预制装配式混凝土剪力墙结构抗震性能研究　出处：《合肥工业大学》2017年硕士论文　论文类型：学位论文

【摘要】：预制混凝土夹心保温外墙板(文中简称为:三明治外墙板)是一种新型的夹心保温复合墙板体系,它是由两侧的钢筋混凝土叶板和中间的挤塑聚苯乙烯(XPS)保温板通过拉接件连接组成。三明治外墙板相较于其他保温墙体具有保温性能优越,防火性能好、耐久性能好等优点,并且能在工厂预制,能够实现良好的环境效益。不同于现浇混凝土结构中的砖砌填充墙,三明治外墙板往往采用外挂于主体结构的连接方式,因此被称为外挂墙板。目前在我国,三明治外挂墙板与主体结构常采用的连接方式为上部线连接、下部限位连接,且线连接避开梁端塑性铰区。为研究采用这一连接方式的三明治外挂墙板对主体结构的动力特性与抗震性能的影响,本文设计并制作了一个作为对比的不含三明治外挂墙板预制混凝土联肢剪力墙试件S-1和两个分别含不开洞和开洞的三明治外挂墙板的预制混凝土联肢剪力墙试件S-2、S-3,并进行了拟静力试验研究。试验结果表明:3个试件的破坏模式差别不大,均是在梁端先出现塑性铰,后墙肢端部屈服,最终均是梁端、墙肢端部塑性铰区混凝土被压碎而破坏;采用上部线连接且避开塑性铰区,底部限位连接的方式能够实现与不含外挂墙板联肢剪力墙相同的梁铰屈服机制;底部限位连接件的水平长圆孔能够满足螺栓的滑动要求,限位连接设计合理,安装质量满足要求;三明治外挂墙板对结构屈服之前的刚度略有提高,含三明治外挂墙板的预制混凝土联肢剪力墙的峰值承载力也略高于不含三明治外挂墙板的预制混凝土联肢剪力墙;3个试件延性相当,位移延性系数介于3.37~5.12之间。此外,本次试验还研究了所采用的单组份密封胶(SR SEAL NB50)和双组份密封胶(MS SEAL)在地震作用下的反应和破坏情况。结果表明,三明治外挂墙板与基础底座的板缝处的两种型号的密封胶在层间位移角分别达到1/92、1/138时才开始破坏,在小震和中震作用下所研究密封胶均能满足外挂墙板与基础间相对变形的要求。在试验研究的基础上,采用ANSYS软件对3个试件的受力过程进行了数值模拟分析,并将分析得到骨架曲线、破坏模式、裂缝开展情况与试验结果进行了对比。分析结果与试验吻合良好,表明所建立的分析模型可以较好的模拟试件的受力过程和破坏形态,可用于后续的进一步研究。
[Abstract]:Precast concrete sandwich insulation wall board (hereafter referred to as: sandwich wall board) is a new type of sandwich thermal insulation composite wall system, which is composed of extruded polystyrene on both sides of the reinforced concrete plate and the middle lobe (XPS) insulation board through connectors connected. Sandwich wall panels compared with other thermal insulation wall with thermal insulation performance superior, good fireproof performance, good durability and other advantages, and can be prefabricated in the factory, to achieve good environmental benefits. Different from the cast-in-place concrete structure of brick walls, sandwich wall board connection is often used in the main structure of the plug-in, so called external wall panels. At present in our country, the connection connection using sandwich external wall panels and main structure for upper lower limit line, connecting, and avoid the line connecting beam end plastic hinge for study. Using this type of Sanming the connection Effect of wall on the main structure of the dynamic characteristics and seismic performance, this paper designed and made of precast concrete specimens and two S-1 respectively with opening and opening of the external wall panels of a sandwich as the contrast without external wall panels sandwich precast concrete coupled shear wall with coupled shear wall specimens of S-2 and S-3. And the pseudo static experiment. The test results show that little difference between the 3 failure modes of specimens, are the first plastic hinge at the beam end wall of the extremities are the final yield, the end of the beam, concrete wall extremities plastic hinge was crushed and destroyed; the upper line and avoid the plastic hinge region, the bottom limit connection can be achieved with and without external wall panels of coupled shear wall with the same beam hinge yield mechanism; the bottom level of long hole connecter can meet the requirements of sliding bolt spacing connection, reasonable design, safety With quality to meet the requirements of the external wall panels; sandwich structure yield before the stiffness increased slightly, slightly higher than the precast concrete sandwich wall panel with plug-in coupled shear wall bearing capacity of precast concrete sandwich panels containing peak plug in coupled shear walls; 3 specimens ductility is between the displacement ductility coefficient between 3.37~5.12. In addition, the experimental research of the one component sealant (SR SEAL NB50) and two-component sealant (MS SEAL) reaction and damage under earthquake. The results show that the damage began to two types of external wall panels and sandwich slab joints of foundation of the sealant reached 1/92,1/138 in the interlayer displacement angle, in the small and moderate earthquake under the study of sealant can meet the external wall panels and the foundation of relative deformation among requirements. On the basis of experimental research, using ANSYS software on the 3 Try to force the process is simulated and analyzed, and the analysis of skeleton curve, failure mode, crack development and comparison of test results. The results agree well with experimental results, show that the established model can better simulate the specimen stress process and failure form, can be used for further research the follow-up.

【学位授予单位】：合肥工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU352.11;TU398.2

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