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(中衡設(shè)計(jì)集團(tuán)股份有限公司, 蘇州 215123)

摘要: 蘇州某水樂(lè)園由鋼屋蓋部分和跨街桁架部分組成,屋蓋為大跨異形自由曲面網(wǎng)殼結(jié)構(gòu),長(zhǎng) 158m、跨度 76m、高 20m?跨街桁架部分跨度為 30m. 通過(guò)找形分析,在兼顧建筑造型的同時(shí)選取結(jié)構(gòu)性能更優(yōu)的曲面形態(tài)?鋼屋蓋采用單雙層網(wǎng)殼結(jié)合的形式,在形成 76m 無(wú)柱大空間的基礎(chǔ)上,保證經(jīng)濟(jì)性及使用功能. 另外,對(duì)結(jié)構(gòu)進(jìn)行了一般靜力分析、關(guān)鍵構(gòu)件中震彈性分析、二階 P-Δ 彈性分析、屈曲分析、雙非線性穩(wěn)定分析、支座位移罕遇地震時(shí)程分析以及節(jié)點(diǎn)有限元分析,在符合規(guī)范要求的前提下,充分保證了結(jié)構(gòu)的安全.

關(guān)鍵詞: 大跨異形網(wǎng)殼;找形分析;單雙層網(wǎng)殼銜接的混合網(wǎng)殼;二階 P-Δ 彈性分析;雙非線性穩(wěn)定分析;罕遇地震時(shí)程分析

中圖分類號(hào):TU391 文獻(xiàn)標(biāo)志碼:A 文章編號(hào):1002-848X(2022)20-0120-08

DOI:10.19701 / j.jzjg.ZJ220017

Design and research of a large-span special-shaped reticulated shell of a water paradise

LU Jianglong, WANG Chenxu, SHEN Xiaoming, YANG Lülei, GONG Minfeng

(ARTS Group Co. , Ltd. , Suzhou 215123, China)

Abstract: A water paradise in Suzhou is composed of steel roof and cross-street truss. The roof is a large-spanspecial-shaped freeform reticulated shell with the length of 158m, the span of 76m and the height of 20m;and the span ofcross-street truss is 30m. Through shape finding analysis, the curved surface with better structural performance was selectedwhile taking into account the architectural modeling. On the premise of forming a 76m-span space without columns, theinnovative form of single-layer and double-layer reticulated shell was adopted, which guarantees the economy and servicefunction. Analyses were conducted including general static analysis, elastic analysis of key components under thefortification earthquake, second-order P-Δ elastic analysis, buckling analysis, bi-nonlinear stability analysis, time-historyanalysis of support displacement under the rare earthquake and finite element analysis of nodes, which fully guaranteed thesafety of the structure under the premise of meeting the requirements of the codes.

Keywords:large-span special-shaped reticulated shell;shape finding analysis;hybrid reticulated shells connected bysingle and double layer reticulated shells;second-order P-Δ elastic analysis;bi-nonlinear stability analysis;time-historyanalysis under rare earthquake

∗江蘇省建設(shè)系統(tǒng)科技指導(dǎo)項(xiàng)目(2014ZD24):大跨度自由曲面空間網(wǎng)格結(jié)構(gòu)設(shè)計(jì)關(guān)鍵技術(shù)研究與應(yīng)用.

第一作者:路江龍,碩士,研究員級(jí)高級(jí)工程師,一級(jí)注冊(cè)結(jié)構(gòu)工程師,英聯(lián)邦結(jié)構(gòu)工程師學(xué)會(huì)會(huì)員及特許結(jié)構(gòu)工程師,主要從事鋼結(jié)構(gòu)設(shè)計(jì)研究工作,Email:lujianglong@ artsgroup. cn.

[引用本文] 路江龍,王晨旭,沈曉明,等. 某水樂(lè)園大跨度異形網(wǎng)殼結(jié)構(gòu)設(shè)計(jì)研究[ J]. 建筑結(jié)構(gòu),2022,52(20):120-127,98. LU Jianglong,WANG Chenxu,SHEN Xiaoming,et al. Design and research of a large-span special-shapedreticulated shell of a water paradise[J]. Building Structure,2022,52(20):120-127,98.