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（聊城市規(guī)劃建筑設(shè)計(jì)院有限公司， 聊城 252000）

［摘要］對(duì)聊城盛世天湖環(huán)?？萍紙@溫泉館室外附屬館結(jié)構(gòu)方案設(shè)計(jì)階段的關(guān)鍵問(wèn)題進(jìn)行了論述。當(dāng)下部結(jié)構(gòu)平面不規(guī)則且超長(zhǎng)時(shí)，不應(yīng)按分縫設(shè)計(jì)，若分縫會(huì)造成上部鋼結(jié)構(gòu)屋蓋的支座支承在動(dòng)力特性不同的多個(gè)下部結(jié)構(gòu)上。按照抗震規(guī)范要求，并結(jié)合MIDAS/Gen特有的應(yīng)變能阻尼比計(jì)算方法，實(shí)現(xiàn)了組合結(jié)構(gòu)阻尼比的正確計(jì)算，進(jìn)而保證了地震作用計(jì)算的合理可靠性。針對(duì)支托屋蓋管桁架的鋼柱，利用結(jié)構(gòu)穩(wěn)定理論給出了穩(wěn)定方程和簡(jiǎn)化計(jì)算公式。

［關(guān)鍵詞］鋼結(jié)構(gòu)； 立體桁架； 應(yīng)變能阻尼比； 穩(wěn)定方程； 計(jì)算長(zhǎng)度系數(shù)

中圖分類(lèi)號(hào)：TU375，TU391文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2016)13-0025-05

Design and analysis on  structural scheme of the outdoor affiliated pavilion of a SPA center

Zhang Yuming

(Liaocheng Planning Architecture Design Institute, Liaocheng 252000， China)

Abstract:The key issues in the scheme design phase of the outdoor affiliated pavilion of Liaocheng Shengshi Tianhu Environmental Science and Technology Park Spa were discussed. When the lower structure has irregular and super-long plane, the structure should not be designed with joints. The setting of joints will cause the bearings of upper steel roof to be supported on different substructures with different dynamic characteristics. According to seismic code requirements, combined with specific strain energy damping ratio calculation method of MIDAS/Gen, the correct calculation of combined computing structural damping ratio was achieved, thus ensuring the reasonability and reliability of the seismic action calculation. The stability equation and simplified formulas were provided based on structural stability theory for steel columns to support roof pipe truss.

Keywords:steel structure； spatial truss；  strain energy damping ratio； stability equation； effective length factor

作者簡(jiǎn)介：張玉明，碩士，高級(jí)工程師，一級(jí)注冊(cè)結(jié)構(gòu)工程師，Email：zhangym@lcadi.com。