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

（1中國(guó)建筑科學(xué)研究院有限公司， 北京 100013；2 中國(guó)建筑科學(xué)研究院有限公司國(guó)家建筑工程技術(shù)研究中心， 北京 100013）

［摘要］結(jié)合現(xiàn)有景區(qū)人行懸索橋的研究和建設(shè)情況，首先介紹景區(qū)人行懸索橋的特點(diǎn)及應(yīng)用，其次介紹人行懸索橋的結(jié)構(gòu)分類(lèi)及受力特點(diǎn)，分別從荷載取值、纜索選用、找形分析、人致振動(dòng)問(wèn)題、節(jié)點(diǎn)設(shè)計(jì)和橋面板設(shè)計(jì)六個(gè)方面對(duì)人行懸索橋設(shè)計(jì)的關(guān)鍵技術(shù)問(wèn)題提出歸納和建議。結(jié)果表明：主纜和抗風(fēng)纜可按順序分別找形，避免同時(shí)調(diào)整兩類(lèi)纜索；現(xiàn)有規(guī)范考慮到的自振頻率區(qū)間未包含實(shí)際頻率，已不能滿(mǎn)足大跨度人行懸索橋設(shè)計(jì)的需要，應(yīng)對(duì)大跨度人行懸索橋的頻率敏感范圍進(jìn)行研究；吊索與主纜及橋面的連接節(jié)點(diǎn)是當(dāng)前設(shè)計(jì)中常被忽略的薄弱環(huán)節(jié)，應(yīng)根據(jù)索內(nèi)力和應(yīng)力幅進(jìn)行節(jié)點(diǎn)設(shè)計(jì)和疲勞驗(yàn)算；最后給出了玻璃橋面板設(shè)計(jì)的5項(xiàng)建議。

［關(guān)鍵詞］大跨度；人行懸索橋；荷載取值；找形分析；人致振動(dòng)；玻璃橋面

中圖分類(lèi)號(hào)：TU318， U448-25文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2021)07-0115-06

Key technologies in structural design of large-span pedestrian suspension bridge

QIN Ge1, LIU Feng1,2, MA Ming1, ZHANG Qiang1

(1 China Academy of Building Research，Beijing 100013， China； 2 National Engineering Research Center of Building Technology, China Academy of Building Research, Beijing 100013, China)

Abstract:Combined with the research and construction of pedestrian suspension bridge in existing scenic spots, the characteristics and application of pedestrian suspension bridge in scenic spots were introduced first, and then the structural classification and mechanical characteristics of pedestrian suspension bridge were introduced, and the key technical problems of pedestrian suspension bridge design were summed up from six aspects of load valuing, cable selection, form-finding analysis, human-induced vibration, node design and bridge deck design. The results show that: the main cable and wind resistant cable can be respectively shaped in order to avoid adjusting the two kinds of cables at the same time; the natural frequency range considered in the existing specifications does not include the actual frequency, which cannot meet the needs of the design of large-span pedestrian suspension bridge, so the frequency sensitive range of large-span pedestrian suspension bridge should be studied further; the connection node between sling and main cable and the connection node between sling and bridge deck are often ignored in the current design, so the node design and fatigue calculation should be carried out according to the cable internal force and stress amplitude; finally, five suggestions are given for the design of glass bridge deck.

Keywords:large-span;pedestrian suspension bridge;load valuing;form-finding analysis;human-induced vibration;glass bridge deck

作者簡(jiǎn)介：秦格，碩士研究生，Email:ceqinge@zju.edu.cn；通信作者：劉楓，碩士，研究員，一級(jí)注冊(cè)結(jié)構(gòu)工程師，Email：liufeng@cabrtech.com。