外部附加带框钢支撑在既有建筑抗震加固中的应用
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摘要
新西兰某建筑遭受了2016年11月14日凯库拉7. 8级地震,出现一定程度的损伤。为保证结构安全,对该建筑进行了抗震安全评估,针对存在的扭转和承载力不足等问题,结合使用功能不得中断的要求,经研究采用外部附加带框钢支撑弱连接技术进行加固。该技术采用高强螺栓与原结构连接,经模型试验验证加固效果良好,且不需入户,施工快捷,造价低,取得了较好的社会效益和经济效益。
A building in New Zealand had suffered a certain degree of damage after a magnitude 7. 8 earthquake of Kaikoura on November 14,2016. In order to ensure its structural safety,the seismic safety assessment of the building is carried out. According to the excited problem including torsion and lack of capacity and uninterruptible requirements for using features,the building is decided to be strengthened by using the weak connection technology of steel brace with border. The technology of high-strength bolts to connect with the original structure is applied,and the good strengthening effects are verified by model test. The technology also has some other advantages such as no need to enter the home,fast construction and low cost,and it achieves some social and economic benefits.
A building in New Zealand had suffered a certain degree of damage after a magnitude 7. 8 earthquake of Kaikoura on November 14,2016. In order to ensure its structural safety,the seismic safety assessment of the building is carried out. According to the excited problem including torsion and lack of capacity and uninterruptible requirements for using features,the building is decided to be strengthened by using the weak connection technology of steel brace with border. The technology of high-strength bolts to connect with the original structure is applied,and the good strengthening effects are verified by model test. The technology also has some other advantages such as no need to enter the home,fast construction and low cost,and it achieves some social and economic benefits.
引文
[1] GB50023-2009,建筑抗震鉴定标准[S]GB50023-2009,Standard for seismic appraisal of buildings[S](in Chinese)
[2] JGJ116-2009,建筑抗震加固技术规程[S]JGJ116-2009, Technical specification for seismic strengthening of buildings[S](in Chinese)
[3]尹保江,吉飞宇,程绍革,等.外部附加带框钢支撑加固框架结构抗震性能试验研究[J].工程抗震与加固改造(待发表)Yin Bao-jiang, Ji Fei-yu, Cheng Shao-ge, et al.Experimental study on seismic performance of frame structure strengthened with attached frame steel braces[J]. Earthquake Resistant Engineering and Retrofitting(accepted for publication)(in Chinese)
[4]尹保江,程绍革,吉飞宇,等.外部附加带框钢支撑弱连接模式加固框架结构抗震性能试验研究[J].工程抗震与加固改造(待发表)Yin Bao-jiang, Cheng Shao-ge,Ji Fe-iyu, et al.Experimental study on seismic performance of frame structure strengthened with weak attached steel braces[J]. Earthquake Resistant Engineering and Retrofitting(accepted for publication)(in Chinese)
[5] The Japan Building Disaster Prevention Association.Guidelines for Seismic Retrofit of Existing Reinforced Concrete Buinldings[S]. 2001
[2] JGJ116-2009,建筑抗震加固技术规程[S]JGJ116-2009, Technical specification for seismic strengthening of buildings[S](in Chinese)
[3]尹保江,吉飞宇,程绍革,等.外部附加带框钢支撑加固框架结构抗震性能试验研究[J].工程抗震与加固改造(待发表)Yin Bao-jiang, Ji Fei-yu, Cheng Shao-ge, et al.Experimental study on seismic performance of frame structure strengthened with attached frame steel braces[J]. Earthquake Resistant Engineering and Retrofitting(accepted for publication)(in Chinese)
[4]尹保江,程绍革,吉飞宇,等.外部附加带框钢支撑弱连接模式加固框架结构抗震性能试验研究[J].工程抗震与加固改造(待发表)Yin Bao-jiang, Cheng Shao-ge,Ji Fe-iyu, et al.Experimental study on seismic performance of frame structure strengthened with weak attached steel braces[J]. Earthquake Resistant Engineering and Retrofitting(accepted for publication)(in Chinese)
[5] The Japan Building Disaster Prevention Association.Guidelines for Seismic Retrofit of Existing Reinforced Concrete Buinldings[S]. 2001