- 摘 要
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（1 香港中文大學(xué)建筑系， 香港 999077； 2 清華大學(xué)土木工程系， 北京 100084； 3 重慶交通大學(xué)土木工程學(xué)院， 重慶 400074； 4 重慶大學(xué)建筑規(guī)劃設(shè)計(jì)研究總院有限公司竹木結(jié)構(gòu)設(shè)計(jì)研究所， 重慶 400045； 5 重慶中竹建筑科技有限公司， 重慶 401147）
［摘要］2019北京世園會(huì)國際竹藤組織園主體結(jié)構(gòu)由9榀兩種跨徑的桁架竹拱組成，其中大拱凈跨32m，拱下凈高7-55m，矢跨比約為1∶4-2，是當(dāng)前中國單拱最大跨度的竹拱結(jié)構(gòu)。該建筑結(jié)構(gòu)將竹元素融入承載結(jié)構(gòu)主體，介紹了該項(xiàng)目的結(jié)構(gòu)設(shè)計(jì)理念、結(jié)構(gòu)體系及結(jié)構(gòu)選型設(shè)計(jì)。并采用ANSYS對(duì)主體結(jié)構(gòu)進(jìn)行有限元分析。計(jì)算結(jié)果表明，結(jié)構(gòu)設(shè)計(jì)滿足剛度及承載力要求，充分體現(xiàn)了桁架拱在本項(xiàng)目中的優(yōu)越性和必要性。同時(shí)對(duì)竹拱現(xiàn)場撓度監(jiān)測結(jié)果進(jìn)行了介紹。監(jiān)測結(jié)果表明，竹拱的變形呈兩側(cè)下沉中間上拱的規(guī)律，變形持續(xù)增長2個(gè)月時(shí)間后趨于穩(wěn)定。最后對(duì)竹材挑選、防腐防蟲處理和設(shè)計(jì)構(gòu)造等耐久性措施進(jìn)行詳細(xì)闡述。本項(xiàng)目可為后續(xù)大跨圓竹結(jié)構(gòu)的推廣應(yīng)用提供參考。
［關(guān)鍵詞］2019北京世園會(huì)； 國際竹藤館； 竹結(jié)構(gòu)； 桁架竹拱
中圖分類號(hào)：TU318, TU366-1文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2019)17-0043-08
Design on large-span bamboo structure of INBAR Pavilion of International Horticultural Exhibition 2019, Beijing, China
Shao Changzhuan1,2, Xiong Junfeng3, Luo Zhi4, Jin Yongzhi5, Ma Jian5, Yang Jun2
(1 Department of Architecture, Chinese University of Hong Kong, Hong Kong 999077, China; 2 Department of Civil Engineering, Tsinghua University, Beijing 100084, China; 3 School of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, China; 4 Department of Bamboo and Wood Structure, General Architectural Planning & Design Research Institute of Chongqing University Co., Ltd., Chongqing 400045, China; 5 Chongqing Zhongzhu Architecture & Technology Co., Ltd., Chongqing 401147, China)
Abstract:The main structure of INBAR Pavilion located in International Horticultural Exhibition 2019, Beijing, China is composed of nine bamboo truss arches with two kinds of spans. The larger arch has a net span of 32 meters, the net height under the arch is 7-55 meters, and the rise-to-span ratio is about 1∶4-2, and it is presently the largest bamboo arch structure in China. Bamboo elements have been fully integrated into the main load-bearing structure of the building. The concept of structural design, structural system and structural type selection design of the project were introduced, and ANSYS was used to carry out finite element analysis of the main structure. The calculation results show that the structural design meets the requirements of load-bearing capacity and stiffness, and it fully reflects the superiority and necessity of the truss arch in the project. At the same time, the in-situ deflection monitoring results of bamboo arch were introduced. The monitoring results show that the deformation of bamboo arch follows the law of sinking on both sides and rising on the middle, and the deformation tends to be stable after 2 months of continuous increase. Finally, the durability measures were elaborated in detail such as bamboo selection, anti-corrosion and insect-proof treatment and design structure. This project can provide reference for the popularization and application of large-span round bamboo structure.
Keywords:International Horticultural Exhibition 2019, Beijing, China; INBAR Pavilion; bamboo structure; bamboo truss arch
*面向2035的中國竹建筑工程發(fā)展戰(zhàn)略和關(guān)鍵技術(shù)研究(2018-ZCQ-06)。
通訊作者：羅智，碩士，工程師，Email：zhibaolong@sina.com。
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