RC框架结构预制外挂墙板—梁节点抗震性能研究

发布时间：2018-03-11 17:31

本文选题：装配式结构　切入点：预制外挂墙板　出处：《扬州大学》2014年硕士论文　论文类型：学位论文

【摘要】：建筑工业化所采用的结构形式一般为装配式结构和半装配式结构,这两种形式通常采用工厂预制的钢筋混凝土墙板进行现场安装作为其外墙围护体系,节省工期。预制外挂墙板与主体结构通常采用柔性连接和刚性连接,柔性连接一般采用连接件的方式,可以削弱主体结构与外挂墙板之间的联系,减少墙板在地震及其它水平荷载作用下所受外力,避免发生破坏,但其本身并不能对结构刚度产生过多的影响。刚性连接一般采用叠合梁的形式,通过预制墙板的预埋钢筋与梁整体浇筑,与柔性连接相比增强了主体结构与外挂墙板之间的联系,所承担的地震力及其它水平荷载也较大,容易在节点处发生破坏。因此对于刚性连接而言,其节点设计尤为重要,对于节点钢筋的计算,布置及构造措施,目前国内并没有出台相关的规范或技术规程。因此各施工单位以及设计单位均凭借以往经验进行施工与设计,造成现有的节点钢筋形式多种多样。采用柔性连接避免墙板破坏的同时也削弱了预制外挂墙板对于主体结构抵抗侧刚度的贡献,造成材料性能的浪费。为充分发挥外挂墙板的抗侧能力,本文结合减震耗能的思想对预制外挂墙板的节点预埋钢筋进行了优化设计。首先通过实验对节点的抗震性能进行分析,分析了影响其抗震性能的因素,参考现有的节点做法,提出了一种合理的节点预埋钢筋形式。并对该形式进行了有限元分析,分析结果表明：该钢筋形式具有稳定的滞回曲线。在此基础上,对采用此种形式的一榀框架进行有限元分析,并进行对比分析,分析结果表明：合理的利用外挂墙板的抗侧能力后,相比采用刚性连接不考虑外挂墙板抗侧能力,结构的地震反应有一定程度的衰减。通过合理设计,适度利用墙板的刚度和强度后,将有助于减轻结构的地震反应。
[Abstract]:The structure of the form of building industrialization for general assembly structure and semi assembly type structure, the two kinds of commonly used reinforced concrete wall panel factory pre installed on site as its exterior enclosure system, savesthe prefabricated external wall panels and main structures are usually made of flexible connection and rigid connection and flexible connection with connector the way that can weaken the between the structure and the external wall, reducing the force under the action of seismic wall and other horizontal loads, avoid the occurrence of damage, but it is not about the stiffness of the structure to produce too much influence. The general rigid connection by composite beam form, through the embedded prefabricated wall panel pouring steel bar and beam, and the flexible joint has been enhanced between the main structure and the external wall, the seismic force and other horizontal load is large, easy to Failure node. So for the rigid connection, the node design is particularly important for the calculation of joints of reinforced, layout and construction measures, China has not issued the relevant standards or technical regulations. Therefore the construction unit and design unit with the past experience of design and construction, resulting in a variety of forms of the existing reinforced joints diversity. Adopt flexible connection while avoiding panel failure also weakened the prefabricated external wall panels for the main structure of resistance to lateral stiffness contribution caused by material waste. In order to make full use of external wall lateral resistant ability, combining with the idea of node energy dissipation pre buried steel prefabricated external wall panels are optimized.
The author analyzed the seismic performance experiment for the node, analyzes the influence factors of the seismic performance, the reference node existing practice, put forward a reasonable node pre buried steel form. And the form of the finite element analysis, the results show that the reinforced form a stable hysteretic curve. This on the basis of finite element analysis for the frame of this form, and carries on the contrast analysis, analysis results show that the external wall panels of the lateral resistant ability of reasonable use, without considering the connection of external wall panels of lateral resistance compared with rigid, the seismic response of the structure have a certain degree of attenuation. Through reasonable design, proper use the wall stiffness and strength, will help to reduce the seismic response of the structure.

【学位授予单位】：扬州大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU375.4;TU352.11

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