填充墙RC吊脚框架结构抗震性能的影响分析

Influence analysis of seismic performance for infilled wall RC stilted frame structures

摘要

为探究填充墙对钢筋混凝土(reinforced concrete，RC)吊脚框架结构抗震性能的影响规律，针对底层不等高柱间填充墙的布置开展研究。通过有限元软件建立了填充墙RC吊脚框架结构数值模型，并与试验结果对比验证了模型的准确性。在此基础上，以模型几何尺寸为变量，设计了11组不同几何参数的模型及对应无填充墙框架进行弹塑性分析。结果表明，填充墙的设置能显著提升结构的承载力与耗能能力，但会加剧吊脚层柱的刚度不对称性，并在加载初期引发刚度突变；结构初始刚度主要受填充墙厚度、底座延伸长度及柱高变化影响，其中短柱高度主导正向刚度，长柱高度主导负向刚度；峰值承载力受填充墙厚度、宽度及柱高影响显著，而填充墙宽度和底座长度对刚度影响较小，但底座缩短可使整体刚度提升约7%。因此，在设计此类结构时，应重点关注短柱高度、墙厚及底座构造的合理匹配，以优化其抗震性能。

Abstract

In order to explore the influence of infilled walls on the seismic performance of reinforced concrete (RC) stilted frame structures, the layout of infilled wall between columns with different heights at the bottom layer was studied. The numerical model of infilled wall RC stilted frame structure was established by finite element software, and the accuracy of the model was verified by comparing it with the experimental results. On this basis, 11 groups of models with different geometric parameters and corresponding empty frames were designed for elastic-plastic analysis with the geometric dimensions of the model as variables. The results showed that the setting of infilled walls can significantly improve the bearing capacity and energy dissipation capacity of the structure, but it will aggravate the stiffness asymmetry of the columns of the stilted floor, and cause a sudden change in stiffness at the initial stage of loading. The initial stiffness of the structure was mainly affected by the thickness of the infilled wall, the extension length of the base and the height of the columns. The short column height dominated the positive stiffness, and the long column height dominated the negative stiffness. The peak bearing capacity was obviously affected by the thickness and width of the infilled wall and the column height, while the width of the infilled wall and the length of the base had little effect on the stiffness, but the shortening of the base can increase the overall stiffness by about 7%. Therefore, in the design of such structures, attention should be paid to the reasonable matching of short column height, wall thickness and base structure to optimize its seismic performance.

关键词

吊脚框架结构 / 填充墙 / 数值模拟 / 参数化分析 / 抗震性能

Key words

stilted frame structure / infilled wall / numerical simulation / parametric analysis / seismic performance

参考文献

[1] 黄群贤 . 新型砌体填充墙框架结构抗震性能与弹塑性地震反应分析方法研究[D]. 泉州: 华侨大学, 2011.

[2] Huang Qunxian . Study on seismic behavior and elastic-plastic analysis method for seismic responses of RC frame infilled with new masonry[D]. Quanzhou: Huaqiao University, 2011. (in Chinese)

[3] 李英民, 刘立平 . 汶川地震建筑震害与思考[M]. 重庆: 重庆大学出版社, 2008.

[4] Li Yingmin, Liu Liping . Earthquake damage and thinking of buildings in Wenchuan earthquake[M]. Chongqing: Chongqing University Press, 2008. (in Chinese)

[5] Lizundia B, Shrestha S N, Bevington J, et al. M7.8 Gorkha, Nepal earthquake on April 25, 2015 and its aftershocks[J]. EERI Earthquake Reconnaissance Team Report, 2016: 1-185.

[6] 谭皓, 张电吉, 卢海林, 等 . 芦山地震框架结构震害分析[J]. 世界地震工程, 2015, 31(2): 95-100.

[7] Tan Hao, Zhang Dianji, Lu Hailin, et al. Damage and analysis of frame structures in Lushan earthquake[J]. World Earthquake Engineering, 2015, 31(2): 95-100. (in Chinese)

[8] 彭娟, 李碧雄, 邓建辉 . 芦山地震和汶川地震中空心砖填充墙震害反思[J]. 世界地震工程, 2014, 30(2): 186-193.

[9] Peng Juan, Li Bixiong, Deng Jianhui . Rethink of damage to hollow-brick infill walls during Lushan earthquake and Wenchuan earthquake[J]. World Earthquake Engineering, 2014, 30(2): 186-193. (in Chinese)

[10] 李凯, 苏何先, 赖正聪, 等 . 同主体柔性连接现浇填充墙RC框架结构抗震性能试验研究[J]. 地震工程与工程振动, 2024, 44(4): 125-135.

[11] Li Kai, Su Hexian, Lai Zhengcong, et al. Experimental study on seismic performance of cast-in-place infill wall RC frame structure with flexible connection of the same main body[J]. Earthquake Engineering and Engineering Dynamics, 2024, 44(4): 125-135. (in Chinese)

[12] 张茂花, 丁俊男, 金薇, 等 . 新型柔性连接开洞填充墙RC框架结构平面外抗震性能[J]. 地震工程与工程振动, 2023, 43(3): 97-105.

[13] Zhang Maohua, Ding Junnan, Jin Wei, et al. Out-of-plane seismic performance of opening masonry infill wall-RC frame structure with a new type flexible connection[J]. Earthquake Engineering and Engineering Dynamics, 2023, 43(3): 97-105. (in Chinese)

[14] 周云, 郭阳照, 杨冠男, 等 . 阻尼砌体填充墙框架结构抗震性能试验研究[J]. 建筑结构学报, 2013, 34(7): 89-96.

[15] Zhou Yun, Guo Yangzhao, Yang Guannan, et al. Experimental study on seismic behavior of frame structure with damped infill wall[J]. Journal of Building Structures, 2013, 34(7): 89-96. (in Chinese)

[16] 袁书成, 林海锋, 朱占元, 等 . 现浇构造柱对砌体填充墙钢框架抗震性能影响[J]. 土木工程学报, 2022, 55(增刊1): 16-24.

[17] Yuan Shucheng, Lin Haifeng, Zhu Zhanyuan, et al. Study on the influence of cast-in-place constructional column on seismic performance of masonry infilled wall steel frame structure[J]. China Civil Engineering Journal, 2022, 55(S1): 16-24. (in Chinese)

[18] 林超 . 新型砌体填充墙框架抗震性能与共同作用机理研究[D]. 泉州: 华侨大学, 2019.

[19] Lin Chao . Seismic performance and interaction mechanism of infilled RC frames using new masonry blocks[D]. Quanzhou: Huaqiao University, 2019. (in Chinese)

[20] 杨光 . 含填充墙的框架结构抗震性能研究[D]. 北京: 中国建筑科学研究院, 2020.

[21] Yang Guang . Research on seismic behavior of frame structures with filled wall[D]. Beijing: China Academy of Building Research, 2020. (in Chinese)

[22] 魏雨良 . 新型分层填充墙RC框架结构抗震性能研究[D]. 哈尔滨: 哈尔滨工业大学, 2023.

[23] Wei Yuliang . Seismic performance of RC frame structures with innovative layered infill walls[D]. Harbin: Harbin Institute of Technology, 2023. (in Chinese)

[24] Di Sarno L, Wu J R . Seismic assessment of existing steel frames with masonry infills[J]. Journal of Constructional Steel Research, 2020, 169: 106040.

[25] Kasapgil S M, Binici B, Canbay E . Seismic behavior of AAC infill walls insulated with cementitious lightweight panels in reinforced concrete frames[J]. Engineering Structures, 2021, 248: 113215.

[26] Huang Honglan, Burton H V, Sattar S . Development and utilization of a database of infilled frame experiments for numerical modeling[J]. Journal of Structural Engineering, 2020, 146(6): 04020079.

[27] Kareem K M, Ahani E, Panto B . Evaluating simplified macromodeling approaches of simulating infilled reinforced concrete frames with openings[J]. Structural Concrete, 2023, 24(1): 721-737.

[28] Usta P, Onat Ö, Bozdağ Ö . Effect of masonry infill walls on the nonlinear response of reinforced concrete structure: October 30, 2020 İzmir earthquake case[J]. Engineering Failure Analysis, 2023, 146: 107081.

[29] Alcocer S M, Flores L E, Marcelino J, et al. Seismic rehabilitation of masonry-infilled concrete frames by adding new cast-in-place reinforced concrete walls[J]. Journal of Building Engineering, 2024, 98: 111167.

[30] Asad M, Thambboo J, Zahra T, et al. Mitigating damages to infill walls under combined in-plane and out-of-plane loadings using a spider web-inspired strengthening strategy: numerical analyses[J]. Engineering Structures, 2025, 323: 119297.

[31] GB/T 50152- 2012 混凝土结构试验方法标准[S].

[32] GB/T 50152- 2012 Standard for test method of concrete structures[S]. (in Chinese)

[33] GB/T 28900-2022 钢筋混凝土用钢材试验方法[S].

[34] GB/T 28900- 2022 Test methods of steel for reinforcement of concrete[S]. (in Chinese)

[35] GB/T 50129-2011 砌体基本力学性能试验方法标准[S].

[36] GB/T 50129- 2011 Standard for test method of basic mechanics properties of masonry[S]. (in Chinese)

[37] JGJ/T 70-2009 建筑砂浆基本性能试验方法标准[S].

[38] JGJ/T 70- 2009 Standard for test method of basic properties of construction mortar[S]. (in Chinese)

[39] GB/T 50010-2010 混凝土结构设计标准[S]. 2024年版.

[40] GB/T 50010-2010 Code for design of concrete structures[S]. 2024 ed. (in Chinese)

[41] Clough R. Effect of stiffness degradation on earthquake ductility requirements[R]. Berkeley: University of California, Structural Engineering Laboratory, 1966.

[42] 刘桂秋 . 砌体结构基本受力性能的研究[D]. 长沙: 湖南大学, 2005.

[43] Liu Guiqiu . The research on the basic mechanical behavior of masonry structure[D]. Changsha: Hunan University, 2005. (in Chinese)

[44] 郑妮娜 . 装配式构造柱约束砌体结构抗震性能研究[D]. 重庆: 重庆大学, 2010.

[45] Zheng Nina . Research on seismic behavior of masonry structures with fabricated Tie-columns[D]. Chongqing: Chongqing University, 2010. (in Chinese)

[46] GB 50003-2011 砌体结构设计规范[S].

[47] GB 50003- 2011 Code for design of masonry structures[S]. (in Chinese)

[48] JGJ/T 101- 2015 建筑抗震试验规程[S].

[49] JGJ/T 101- 2015 Specification for seismic test of buildings[S]. (in Chinese)

基金资助

国家自然科学基金项目(52578554)