- 摘 要
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（1 中國建筑設計研究院有限公司， 北京 100044； 2 華中科技大學土木與水利工程學院， 武漢430074；3 清華大學土木工程系， 北京100084）
［摘要］為研究南京未來花園單個樹狀結(jié)構的性能，采用ABAQUS軟件進行建模，對結(jié)構進行了靜力承載性能、影響因素和地震作用分析。結(jié)果表明：在最不利工況下，有機玻璃上肋的最大第一主應力小于3.5MPa，不銹鋼結(jié)構處于彈性狀態(tài)；溫度變化對整體結(jié)構受力性能影響較??；節(jié)點失效時，有機玻璃面板的最大第一主應力增加了2.3MPa；結(jié)構整體剛度偏小，水平地震作用對單個樹狀結(jié)構的內(nèi)力影響較小。采用滑動式支撐節(jié)點可有效地釋放有機玻璃面板的溫度作用；對于該樹狀結(jié)構，節(jié)點失效，結(jié)構仍然安全；單個樹狀結(jié)構可不考慮地震作用。
［關鍵詞］南京未來花園；有機玻璃；不銹鋼；單個樹狀結(jié)構；節(jié)點失效
中圖分類號：TU399文獻標識碼：A文章編號：1002-848X(2021)10-0055-05
Single-tree structure design and load-bearing capacity of the Nanjing Future Garden
WU Hongru1, WANG Zongyi2,3, SUN Zhou1, WANG Yuanqing3
（1 China Architecture Design & Research Group Co., Ltd., Beijing 100044, China；2 School of Civil and Hydraulic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China；3 Department of Civil Engineering, Tsinghua University, Beijing 100084, China）
Abstract:In order to study the load-bearing capacity of the single-tree structure of the Nanjing Future Garden, ABAQUS software was used to create the model. The analyses of static load-bearing capacity, influential factors, and earthquake effect on the structure were performed. The results show that the maximum principal stress on the acrylic is lower than 3.5 MPa and the stainless steel structure remains elastic in the worst working condition. Temperature variation has little effect on the mechanical performances of the structure. When the joints fail, the maximum principal stress on the acrylic panel increases 2.3 MPa. The stiffness of the structure is relatively small and horizontal earthquake barely affects the internal forces of the single-tree structure. The temperature effect of the acrylic panel can be released by using slip support joints. For the tree-shaped structure, it is safe although several joints fail. Seismic action cannot be taken into consideration for the single-tree structure.
Keywords:the Nanjing Future Garden;acrylic;stainless steel;single-tree structure;joint failure
*國家自然科學基金（51878377），中國博士后科學基金（2019T120097），住房與城鄉(xiāng)建設部研究開發(fā)項目（2020-K-070），華中科技大學自主創(chuàng)新研究基金（2020kfyXJJS126）。
作者簡介：鄔紅茹，學士，工程師，Email：wuhr@cadg.cn；通信作者：王綜軼，博士后，講師，Email: wangzongyi1990@126.com。
