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        您現在的位置:建筑結構>> 期 刊>> 2021年>> 第24期>>正文內容
        木板夾芯房屋抗震性能試驗研究*
        張再昱,周鐵鋼
        摘 要

        (西安建筑科技大學土木工程學院, 西安 710055)

        [摘要]新疆是我國地震頻發地區,在歷次地震中當地的傳統民居會遭受不同程度的損壞。為了解當地木板夾芯房屋的抗震性能,設計了一個1/4縮尺比例的單層木板夾芯房屋模型振動臺試驗,研究模型結構在各個工況作用下的結構動力特性、加速度和位移反應等。試驗結果表明:在8度多遇地震(加速度峰值110gal)時,模型門窗洞口薄弱位置開裂,自振頻率和剛度明顯下降;在9度罕遇地震(加速度峰值620gal)時,模型上下兩道木圈梁出現了明顯的開裂,但木柱與墻體的橫向木板連接穩固,結構整體性完好,此時模型的位移角為1/23。由此可知,木板夾芯房屋滿足新疆大部分地區“大震不倒”的8度抗震設防要求。 

        [關鍵詞]振動臺試驗;木板夾芯房屋;自振頻率;抗震性能;加速度反應 

        中圖分類號:TU398-7 文獻標識碼:A文章編號:1002-848X(2021)24-0103-06

         

        Experimental study on seismic performance of wooden sandwich farmhouse 

        ZHANG  Zaiyu,  ZHOU  Tiegang 

        (School of Civil Engineering, Xi’an University of Architecture & Technology, Xi’an 710055, China) 

        Abstract: Xinjiang is a region with frequent earthquake disasters in China. In each earthquake, the local traditional houses suffered varying degrees of damage. In order to understand the seismic performance of local wooded sandwich house, a shaking table test of a one-story wooded sandwich house model with 1/4 scale was designed to study the dynamic characteristics, acceleration and displacement response of the model structure under various working conditions. The experimental results show that the crack occurs at the weak position of the model door and window, and the natural vibration frequency and stiffness decrease obviously when the earthquake is  8 degrees frequent earthquake(peak acceleration of 110gal). In the case of the 9 degree rare earthquake (peak acceleration of 620gal), the upper and lower wooden ring beams of the model appear obvious cracks, but the transverse wooden columns are firmly connected to the wooden board of the wall, and the integrity of the structure is intact. At this time, the displacement angle of the model was 1/23. It can be seen that the wooded sandwich houses meet the requirement of 8 degrees seismic fortification of ‘not collapse under the rare earthquake’ in most areas of Xinjiang. 

        Keywords:shaking table test; wooden sandwich house; natural frequency; seismic performance; acceleration response

         

        *國家科技支撐計劃項目(2014BAL06B03),陜西省重點科技創新團隊計劃項目(2014KCT-31),鄉村既有農宅安全宜居性能改造關鍵技術研究與示范項目(2020ZDLNY06-03)。

         

         作者簡介:張再昱,碩士,Email:152995179@qq.com; 通信作者:周鐵鋼,博士,教授,博士生導師,Email: zhoutiegang@126.com。

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