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（中南建筑設(shè)計(jì)院股份有限公司， 武漢 430071）

［摘要］武漢歸元寺商業(yè)綜合體項(xiàng)目利用市政道路下的地下空間，把被市政道路分割的4個(gè)獨(dú)立地下室整合成一個(gè)大的整體地下室，地下室頂板作為市政道路的支承結(jié)構(gòu)，頂板汽車荷載取值是本項(xiàng)目的重點(diǎn)。對(duì)作用在地下室頂板上的公路-Ⅰ級(jí)和公路-Ⅱ級(jí)車輛荷載進(jìn)行了等效荷載分析，考慮了2.5～9.0m范圍共8種不同板跨和0～4.0m范圍共8種不同覆土厚度的影響，并給出了相應(yīng)的等效荷載以及考慮覆土厚度影響的折減系數(shù)。介紹了武漢市消防車基本情況，發(fā)現(xiàn)芬蘭博浪濤101m登高平臺(tái)車的重量大于公路-Ⅰ級(jí)車輛荷載的數(shù)值，因此對(duì)可能作用在地下室頂板上的芬蘭博浪濤101m登高平臺(tái)車也進(jìn)行了等效荷載分析。與《建筑結(jié)構(gòu)荷載規(guī)范》（GB 50009—2012）比較得出，當(dāng)覆土厚度≥2.4m時(shí)，計(jì)算得到的部分考慮覆土厚度影響的折減系數(shù)比荷載規(guī)范值大，這可能是分析采用多排多列車輛布置的原因，應(yīng)謹(jǐn)慎對(duì)待工程設(shè)計(jì)取值。

［關(guān)鍵詞］等效荷載分析； 地下室頂板； 車輛荷載； 消防車； 市政道路； 覆土厚度； 折減系數(shù)

中圖分類號(hào)：TU375, TU391, TU393-3文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2020)08-0095-05

Analysis of vehicle equivalent load on basement roof in commercial complex project near Guiyuan Temple in Wuhan

LUO Guifa, ZHANG Yuqing, HOU Guoqiu, LU Zhan

(Central-South Architectural Design Institute Co., Ltd., Wuhan 430071, China)

Abstract:The commercial complex project near Wuhan Guiyuan Temple uses the underground space under the municipal roads to integrate the 4 independent basements divided by the municipal roads into a large overall basement. The basement roof is used as the supporting structure of the municipal roads. The value of the vehicle load on basement roof is the key of the project. Equivalent load analysis of highway-level Ⅰ and highway-level Ⅱ vehicle loads acting on the basement roof was considered, taking into account impacts of a total of 8 different plate spans ranging from 2.5m to 9.0m and a total of 8 different cover thicknesses ranging from 0 to 4.0m. The corresponding equivalent load and the reduction factor considering the influence of the thickness of the cover were given. The basic situation of Wuhan fire trucks was introduced to find that the weight of Finland Bronto 101m skylift vehicle was greater than the value of highway-level Ⅰ vehicle load. Therefore, the equivalent load analysis was conducted of Finland Bronto 101m skylift vehicle which might act on the basement roof. Compared with the Load code for the design of building structures (GB 50009—2012), when the thickness of the cover was no less than 2.4m, some of the calculated reduction factor considering the influence of the thickness of the cover was greater than the load specification value, which might be attributed to multiple rows of the vehicles arrangement. Therefore, engineering design values should be treated with caution.

Keywords:equivalent load analysis; basement roof; vehicle load; fire truck; municipal road; cover thickness; reduction factor