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新型连接件的蒸压加气混凝土外墙板的循环性能

Cyclic Behavior of Autoclaved Aerated Concrete External Panel with New Connector.

作者信息

Cui Jianhua, He Shulin, Ding Kewei, Zhang Yu, Kong Xiaoying

机构信息

School of Civil Engineering, Anhui Jianzhu University, Hefei 230601, China.

School of Civil Engineering, Guangzhou University, Guangzhou 510006, China.

出版信息

Materials (Basel). 2022 Dec 8;15(24):8778. doi: 10.3390/ma15248778.

DOI:10.3390/ma15248778
PMID:36556582
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9784649/
Abstract

In this paper, a new slip-type crossing connector is proposed for autoclaved aerated concrete (ALC) panels with steel frames, and the proposed connector is also studied deeply in terms of seismic performance. The research included pseudo-static tests and finite element simulations. First, the seismic performance of slip-type crossing connectors and standard L-hooked bolts was studied comparatively, including the stability, bearing capacity, stiffness, energy dissipation, and hysteresis performance. ABAQUS 2020 software was used to establish finite element models, and the results of the experiments were verified with simulations on the basis. According to the simulations, a parameter analysis of connector optimization was carried out. The effects of connector thickness and connector plate length on the seismic performance were further investigated. From the experimental and simulation results, the slip-type crossing connector has excellent performance and good assembly efficiency, it can improve the deficiencies of the existing connectors. The comparison demonstrated that the slip-type crossing connector has a complete hysteresis curve, a high energy dissipation capacity, and a 9.7% increase in bearing capacity. The appropriate reduction in connector thickness and plate length can ensure superior seismic performance while saving resources. The finite analysis method can guide the design and implementation of new external ALC panel connectors.

摘要

本文提出了一种用于带钢框架的蒸压加气混凝土（ALC）板的新型滑动式交叉连接器，并对该连接器的抗震性能进行了深入研究。研究包括拟静力试验和有限元模拟。首先，对比研究了滑动式交叉连接器和标准L型钩螺栓的抗震性能，包括稳定性、承载力、刚度、耗能和滞回性能。使用ABAQUS 2020软件建立有限元模型，并在此基础上通过模拟验证实验结果。根据模拟结果，对连接器优化进行了参数分析。进一步研究了连接器厚度和连接板长度对抗震性能的影响。从实验和模拟结果来看，滑动式交叉连接器具有优异的性能和良好的装配效率，能够改善现有连接器的不足。对比表明，滑动式交叉连接器具有完整的滞回曲线、较高的耗能能力，承载力提高了9.7%。适当减小连接器厚度和板长可以在节省资源的同时确保优异的抗震性能。有限分析方法可为新型外部ALC板连接器的设计和实施提供指导。

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