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(1 福州大學土木工程學院, 福州 350108; 2 中國電建集團江西省電力設計院有限公司, 南昌 330096;3 福州市城鄉(xiāng)建總集團有限公司, 福州 350007)
摘要: 為維護城市道路通暢、管道布局合理,新型地下結(jié)構(gòu)預制綜合管廊應用逐漸廣泛. 地震災害可能會對綜合管廊結(jié)構(gòu)造成不可忽視的破壞,使城市經(jīng)濟發(fā)展和資源安全受到嚴重威脅. 以福州市馬尾區(qū)地下預制綜合管廊項目為原型,采用雙折線模型簡化模擬綜合管廊接頭遇水膨脹橡膠的壓縮曲線,不考慮結(jié)構(gòu)與土體間的摩擦滑移,建立三維預制綜合管廊-接頭-場地土的地震動響應分析模型. 首先考慮剛性連接和柔性連接的兩種接頭形式,研究不同接頭連接剛度對綜合管廊地震響應的影響;其次通過改變視波速大小實現(xiàn)行波效應,研究不同視波速下,不同預制標準節(jié)段長度拼接的綜合管廊結(jié)構(gòu)在不同接頭位置的地震響應. 結(jié)果表明,行波效應和預制標準節(jié)段長度變化均對預制綜合管廊結(jié)構(gòu)的地震響應存在顯著影響,隨著預制標準節(jié)段長度的增大,接頭處的地震響應隨之增大.
關鍵詞: 預制綜合管廊; 接頭連接形式; 行波效應; 抗震性能; 預制標準節(jié)段長度
中圖分類號:TU441. 2 文獻標志碼:A 文章編號:1002-848X(2022)03-0057-10
DOI:10. 19701 / j. jzjg. LS210058
Seismic response analysis of prefabricated comprehensive pipe gallery-joint-site soil
GU Yin1, QIU Shirong1, XIONG Mengting2, YU Bolin3, LIN Caiqiang3
(1 College of Civil Engineering, Fuzhou University, Fuzhou 350108, China;2 PowerChina Jiangxi Electric Power Engineering Co., Ltd., Nanchang 330096, China;3 Fuzhou Urban and Rural Construction Group Co., Ltd., Fuzhou 350007, China)
Abstract: In order to maintain the smooth flow of urban roads and reasonable pipeline layout, the new undergroundstructure prefabricated comprehensive pipe gallery is gradually widely used. Earthquake disasters may cause non-negligibledamage to the comprehensive pipe gallery structure, which severely threatens urban economic development and resourcesecurity. Taking the underground comprehensive pipe gallery project in Mawei district, Fuzhou city as the prototype, thecompression curve of water-expanded rubber in prefabricated comprehensive pipe gallery joints was simply simulated withdouble broken line model, and the ground vibration response analysis model of three-dimensional prefabricatedcomprehensive pipe galler-joint-site soil was established without considering the friction and slippage between structure andsoil. First, considering the two joint forms of rigid connection and flexible connection, the effect of different jointconnection stiffness on the seismic response of the comprehensive pipe gallery was studied. Secondly, the traveling waveeffect was realized by changing the apparent wave speed, and the seismic response of the joints at different positions of thecomprehensive pipe gallery with different prefabricated standard segment lengths was studied under different traveling wavespeeds. The results show that both the traveling wave effect and the change in the length of the prefabricated standardsegment have a significant impact on the seismic response of the prefabricated comprehensive pipe gallery structure. As thelength of the prefabricated standard segment increases, the seismic response at the joint will increase accordingly.
Keywords:prefabricated comprehensive pipe gallery; joint connection form; traveling wave effect; seismic performance;prefabricated standard segment length
∗國家自然科學基金面上項目(51578157) .
第一作者:谷音,博士,教授,博士生導師,主要從事橋梁與地下結(jié)構(gòu)的相關研究,Email:cinoa@ fzu. edu. cn.
[引用本文] 谷音,邱詩榕,熊夢婷,等. 預制綜合管廊-接頭-場地土地震響應分析[ J] . 建筑結(jié)構(gòu),2022,52( 3) :57-66. GU Yin, QIU Shirong, XIONG Mengting, et al. Seismic response analysis of prefabricated comprehensive pipegallery-joint-site soil[ J] . Building Structure,2022,52(3) :57-66.
