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(1 上海建筑設計研究院有限公司， 上海 200041； 2 上海建筑空間結構工程技術研究中心， 上海 200041)
摘要: 太原植物園溫室建筑造型呈“貝殼”形狀，其中 1#溫室最大跨度為 89. 5m，最大高度 29. 5m，采用雙向疊放膠合木梁形成網殼結構體系，在膠合木梁下部設置雙向拉索，拉索和膠合木梁之間通過倒四角錐拉桿形成整個溫室結構體系。 提出了新型“Z”形木梁拼接節(jié)點和木梁疊放節(jié)點，可有效避免雙向木梁在節(jié)點區(qū)被打斷造成剛度削弱和連接困難，同時也滿足了建筑效果的需求，該節(jié)點的設計保證了膠合木網殼結構體系的成立。 進一步研究了倒四角錐拉桿節(jié)點及安裝方法，可有效避免現(xiàn)場張拉索網的難題，并給出了一種索網結構的張緊安裝方法。 通過控制索的初始預應力來提高結構整體剛度和穩(wěn)定性，采用幾何非線性方法對結構進行各工況計算，并進行了特征值分析和極限承載力分析，驗證了新型結構體系的可靠性，對拓展國內大跨度膠合木建筑的發(fā)展具有重要意義。
關鍵詞: 太原植物園； 大跨度膠合木網殼結構； 木梁拼接節(jié)點； 倒四角錐拉桿節(jié)點
中圖分類號:TU393. 3 文獻標志碼:A 文章編號:1002￣848X(2022)04￣0001￣05
DOI:10. 19701 / j.jzjg.JG21031
Research on key technologies of large￣span glued laminated timber reticulated shell structure designin Taiyuan Botanical Garden
JIA Shuizhong1，2
(1 Shanghai Institute of Architectural Design and Research， Shanghai 200041， China；2 Shanghai Engineering Research Center of Spatial Structure， Shanghai 200041， China)
Abstract: The greenhouse building model in Taiyuan Botanical Garden is shaped like a " shell" . The 1# greenhouse has amaximum span of 89. 5m and a maximum height of 29. 5m. Two￣way laminated glulam beams are used to form a reticulatedshell structure system. Two￣way cables are set at the lower part of the glulam beam. The whole greenhouse structure systemis formed between the cables and the glulam beam through inverted four corner cone pull rods. A new " Z" shaped woodbeam splicing joint and wood beam stacking joint were proposed， which can effectively avoid the stiffness weakening andconnection difficulties caused by the interruption of two￣way glulam beams in the joint area， and also meets the needs ofarchitectural effects. The design of the " Z" shaped wood beam splicing joint ensures the establishment of the gluedlaminated timber reticulated shell structure system. The inverted four corner cone pull rod joint and its installation methodwas further researched， which can effectively avoid the problem of tensioning the cable net on site， and a tensioninginstallation method of the cable net structure was given. By controlling the initial prestress of the cable to improve the overallstiffness and stability of the structure， the geometric nonlinear method was used to calculate the working conditions of thestructure， and the eigenvalue analysis and ultimate bearing capacity analysis were carried out to verify the reliability of thenew structural system， which is of great significance to expand the development of long￣span glulam buildings in China.
Keywords:Taiyuan Botanical Garden； large￣span glued laminated timber reticulated shell structure； wood beam splicingjoint； inverted four corner cone pull rod joint
∗華建集團課題(17￣1 類￣0104￣結)。
第一作者:賈水鐘，碩士，教授級高級工程師，主要從事建筑結構設計研究，Email: jiasz@ isaarchitecture.com。
[引用本文] 賈水鐘. 太原植物園大跨膠合木網殼結構設計關鍵技術研究[J]. 建筑結構，2022，52(4):1￣5，62. JIAShuizhong. Research on key technologies of large￣span glued laminated timber reticulated shell structure design in TaiyuanBotanical Garden[J]. Building Structure，2022，52(4):1￣5，62.
