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(1 蘇交科集團(tuán)股份有限公司在役長(zhǎng)大橋梁安全與健康國(guó)家重點(diǎn)實(shí)驗(yàn)室， 南京 211112； 2 東南大學(xué)土木工程學(xué)院， 南京 211189； 3 南京交通職業(yè)技術(shù)學(xué)院路橋與港航工程學(xué)院， 南京 211188)

摘要: CD 型裝配式鋼橋是在德國(guó) Krupp 標(biāo)準(zhǔn)快速裝配 D 型梁的基礎(chǔ)上發(fā)展而來(lái)的新型裝配式鋼橋，與傳統(tǒng)的321 型和 HD200 型裝配式鋼橋相比，CD 型裝配式鋼橋的抗彎和抗剪能力明顯提升，且具有優(yōu)越的跨越能力。 為分析驗(yàn)證大跨度 CD 型裝配式鋼橋的靜動(dòng)力性能，以跨徑為 54. 864m 雙排雙層加強(qiáng) CD 型裝配式鋼橋?yàn)檠芯繉?duì)象，通過(guò)有限元仿真和荷載試驗(yàn)，對(duì)比分析了大跨度 CD 型裝配式鋼橋靜動(dòng)力特性。 研究結(jié)果表明:城￣B 級(jí)荷載下，靜載試驗(yàn)應(yīng)力校驗(yàn)系數(shù)為 0. 65~ 0. 80，撓度校驗(yàn)系數(shù)為 0. 67 ~ 0. 91，結(jié)構(gòu)強(qiáng)度和剛度滿足設(shè)計(jì)要求。 相對(duì)殘余變形為13. 4% ~ 17. 0%，架設(shè)完成后需進(jìn)行預(yù)壓以消除塑性變形。 橫向彎曲振動(dòng)明顯，應(yīng)增加抗風(fēng)拉桿和橫撐，提高結(jié)構(gòu)橫向剛度和穩(wěn)定性。 10km/ h 以上無(wú)障礙行車實(shí)測(cè)沖擊效應(yīng)顯著，建議重載車輛限速通行。

關(guān)鍵詞: CD 型裝配式鋼橋； 靜力特性； 動(dòng)力特性； 荷載試驗(yàn)； 承載能力

中圖分類號(hào):TU391，U446. 1 文獻(xiàn)標(biāo)志碼:A 文章編號(hào):1002￣848X(2022)06￣0056￣05

DOI:10. 19701 / j.jzjg.LS210273

Experimental study on static and dynamic performance of long￣span CD￣type fabricated steel bridge

WANG Xianqiang1，2， LU Jun1， WANG Shaofeng3， HUA Jie1， ZHANG Jiandong1

(1 The State Key Laboratory on Safety and Health of In￣service Long￣span Bridges， JSTI Group， Nanjing 211112，China； 2 School of Civil Engineering， Southeast University， Nanjing 211189， China； 3 College of Road， Bridgeand Harbor Engineering， Nanjing Vocational Institute of Transport Technology， Nanjing 211188， China)

Abstract: CD￣type fabricated steel bridge is a new type of fabricated steel bridge developed on the basis of German Kruppstandard rapid assembly D￣type girder. Compared with the traditional 321￣type and HD200￣type fabricated steel bridges， theCD￣type fabricated steel bridge has significantly improved bending and shear resistance， and possess superior spanningcapability. In order to analyze and verify the static and dynamic performance of long￣span CD￣type fabricated steel bridge， a54. 864m double￣row and double￣layer reinforced CD￣type fabricated steel bridge was selected as research object to compareand analyze the static and dynamic characteristics through finite element simulation and load test. The results show thatstructural strength and stiffness meet the requirements with the stress verification coefficient 0. 65~ 0. 80 and the deflectionverification coefficient 0. 67 ~ 0. 91 under city￣B load in static load test. Preloading is required to eliminate plasticdeformation after erection due to the relative residual deformation 13. 4% ~ 17. 0%. As the transverse bending vibration isobvious， wind resistant tie rods and cross brace should be added to improve the structural lateral stiffness and stability. Themeasured impact effect of barrier￣free driving with the speed more than 10km/ h is especially significant. Therefore， a speedlimit for heavy￣duty vehicles is recommended.

Keywords:CD￣type fabricated steel bridge； static characteristic； dynamic characteristic； load test； bearing capacity

∗江蘇省交通運(yùn)輸科技項(xiàng)目(2019Y17，2019Y69￣02)，中國(guó)博士后基金面上項(xiàng)目(2018M642300)，江蘇省博士后科研資助計(jì)劃項(xiàng)目(2018K136C)。

第一作者:王賢強(qiáng)，博士，高級(jí)工程師，主要從事于鋼結(jié)構(gòu)橋梁建造與運(yùn)維養(yǎng)護(hù)研究，Email: wangxianqiang1011@ 163.com。

[引用本文] 王賢強(qiáng)，陸軍，王韶豐，等. 大跨度 CD 型裝配式鋼橋靜動(dòng)力性能試驗(yàn)研究[ J]. 建筑結(jié)構(gòu)，2022，52(6):56￣60. WANG Xianqiang， LU Jun， WANG Shaofeng， et al. Experimental study on static and dynamic performance oflong￣span CD￣type fabricated steel bridge[J]. Building Structure，2022，52(6):56￣60.