884aa四虎影成人精品,99久久国产综合精品女图图等你,97在线观看永久免费视频,久久精品国产精品亚洲38,ⅵdeodesetv性欧美

(廣州市設(shè)計(jì)院集團(tuán)有限公司, 廣州 510620)

摘要: 消防車荷載合理取值對結(jié)構(gòu)設(shè)計(jì)的安全性與經(jīng)濟(jì)性影響較大,我國《工程結(jié)構(gòu)通用規(guī)范》 (GB 55001—2021)及《建筑結(jié)構(gòu)荷載規(guī)范》(GB 50009—2012)規(guī)定的消防車等效均布活荷載取值考慮同時作用多輛消防車并按最不利布置工況,適用于消防車登高面或消防車停車區(qū)等可能存在多排、多列消防車排布的區(qū)域;但對于常見的消防車單車道以及板塊上僅作用有局部消防車輪壓的情況,荷載取值往往偏大。 綜合考慮樓板跨度、單車道相對板跨位置及常見的覆土厚度等因素影響,采用有限單元法確定消防單車道的等效均布活荷載取值。 結(jié)果表明:在單車道消防車輪壓荷載作用下,最不利布置等效均布活荷載隨著板跨增大而減小,也隨著覆土厚度增大而減小;隨著車道布置由板跨邊往板跨內(nèi)移動,等效均布活荷載不斷增大,直到移動到最不利布置位置。

關(guān)鍵詞: 消防車; 單車道; 等效均布活荷載; 最不利布置

中圖分類號:TU312+. 1 文獻(xiàn)標(biāo)志碼:A 文章編號:1002-848X(2022)24-0035-04

DOI:10. 19701 / j. jzjg. ZJ220101

Study on equivalent uniform live load for single lane of fire engine

PENG Shuili

(Guangzhou Design Institute Group Co. , Ltd. , Guangzhou 510620, China)

Abstract: The reasonable value of fire engine load has a great impact on the safety and economy of structural design. Theequivalent uniform live load of fire engines specified in the General code for engineering structures (GB 55001—2021) andLoad code for the design of building structures (GB 50009—2012) considers the simultaneous action of multiple fire enginesand the most unfavorable layout conditions, which is applicable to areas where there may be multiple rows and multipletrains of fire engines, such as fire engines climbing site or fire engines parking area. However, for the common single laneof fire engines and the case where only local fire engine wheel pressure is acting on the plate, the load value is often toolarge. Considering the influence of floor span, the position of single lane relative to the floor span and the common thicknessof covering soil, the equivalent uniformly distributed live load of fire engine single lane was determined by finite elementmethod. The results show that under the pressure load of fire engine wheels on a single lane, the equivalent uniformlydistributed live load of the most unfavorable layout decreases with the increase of floor span, and also decreases with theincrease of soil cover thickness; As the lane layout moves from the edge of the floor span to the inside of the floor span, theequivalent uniformly distributed live load increases continuously until it moves to the most unfavorable layout position.

Keywords:fire engine; single lane; equivalent uniform live load; most unfavorable layout

第一作者:彭水力,碩士,高級工程師,一級注冊結(jié)構(gòu)工程師、注冊土木工程師(巖土),主要從事建筑結(jié)構(gòu)設(shè)計(jì)工作,Email:shuilipeng@ 163. com。

[引用本文] 彭水力. 單車道消防車等效均布活荷載取值研究[ J]. 建筑結(jié)構(gòu),2022,52(24):35-38,113. PENGShuili. Study on equivalent uniform live load for single lane of fire engine [ J]. Building Structure,2022,52( 24):35-38,113.