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（杭州中聯(lián)筑境建筑設(shè)計有限公司， 杭州 310011）
［摘要］杭州下沙大劇院為復(fù)雜多塔連體結(jié)構(gòu)，下部采用鋼框架-鋼支撐結(jié)構(gòu)，屋面采用大跨雙層空間桁架，采用單層空間網(wǎng)殼結(jié)構(gòu)做落地墻面。本工程根據(jù)建筑功能分為兩個結(jié)構(gòu)單元，分別對應(yīng)劇院和多功能廳。介紹了劇院結(jié)構(gòu)設(shè)計中的重點，包括多遇地震下的結(jié)構(gòu)響應(yīng)、振型分解反應(yīng)譜法和時程分析法的對比、重要節(jié)點的有限元分析、連體結(jié)構(gòu)的屈曲分析、空間結(jié)構(gòu)的大震彈塑性分析、超長結(jié)構(gòu)樓板溫度作用分析、樓板的大震下應(yīng)力分析及舒適度分析、風(fēng)荷載下的結(jié)構(gòu)響應(yīng)、通高柱計算長度分析和抗連續(xù)倒塌分析等，以驗證設(shè)計的合理性和安全性。
［關(guān)鍵詞］大跨空間結(jié)構(gòu)； 網(wǎng)殼結(jié)構(gòu)； 非線性屈曲分析；大震彈塑性分析；樓板應(yīng)力及舒適度；抗連續(xù)倒塌分析
中圖分類號：TU393-3文獻標識碼：A文章編號：1002-848X(2021)06-0059-09
Analysis of key points and difficulties of structural design of Hangzhou Xiasha Grand Theater
LU Jun, CAO Xuefeng, WANG Pengfei, JIN Weiming, WU Jianle
(CCTN Architectural Design Co., Ltd., Hangzhou 310011, China)
Abstract:Hangzhou Xiasha Grand Theater is a complex multi-tower conjoined structure. The lower part adopts a steel frame-steel support structure, the roof adopts a large-span double-layer space truss, and a single-layer space latticed shell structure is used as the floor wall. The project is divided into two structural units according to the building function, which is a theater and a multi-function hall. The key points of structural design of the theater was introduced, including the structural response under frequent earthquakes, comparison of mode-supperposition response spectrum method and time history analysis method, finite element analysis of important nodes, buckling analysis of conjoined structures, elastoplastic analysis of space structure under rare earthquake, temperature effect analysis of super-long structure floor, stress analysis and comfort analysis of floor under rare earthquake, the structural response of wind load, calculation length analysis of through-height column and anti-continuous collapse resistance analysis, etc., to verify the rationality of the structural design and safety.
Keywords:large-span space structure; latticed shell structure; nonlinear buckling analysis;elastoplastic analysis under rare earthquake;stress and comfort of floor; anti-continuous collapse resistance analysis
作者簡介：陸俊，學(xué)士，高級工程師，Email:jun_lu@acctn.com。
