城市綜合管廊供水管道彎管及其支墩體系力學(xué)分析
1，肖瑞2，崔萬(wàn)麗2，陳建華3
HU Qun-fang,SUN Yan,XIAO Rui,et al.Mechanical Analysis of Bends and Supports of Water Supply Pipeline in Urban Utility Tunnel[J].China Water & Wastewater,2020,36(20):19-26.
城市綜合管廊供水管道彎管及其支墩體系力學(xué)分析
- Title:
- Mechanical Analysis of Bends and Supports of Water Supply Pipeline in Urban Utility Tunnel
- 作者:
- 胡群芳1,2，孫1，肖瑞2，崔萬(wàn)麗2，陳建華3
- (1.同濟(jì)大學(xué)上海防災(zāi)救災(zāi)研究所，上海200092；2.同濟(jì)大學(xué)土木工程學(xué)院，上海200092；3.蕪湖新興鑄管有限責(zé)任公司，安徽蕪湖241000)
- 摘要:
- 近年來(lái)隨著我國(guó)城市市政管網(wǎng)建設(shè)、更新與改造，國(guó)家大力推動(dòng)城市綜合管廊建設(shè)。相比于傳統(tǒng)的直埋式市政管線(xiàn)，管廊內(nèi)主要采取吊架或支墩方式架空敷設(shè)各種管線(xiàn)，因此，管廊內(nèi)大口徑有壓管道彎管連接區(qū)域，因輸送介質(zhì)壓力方向改變會(huì)對(duì)管道產(chǎn)生附加的不平衡推力，從而影響其接頭與支墩受力狀態(tài)與安全。針對(duì)綜合管廊內(nèi)敷設(shè)DN800大口徑球墨鑄鐵供水管道彎管及支墩受力問(wèn)題，考慮2組9種不同角度連接工況下管道輸送水體—管體結(jié)構(gòu)—支墩約束整體作用體系，利用流-固耦合分析方法，研究了彎管管道、支墩在不平衡推力作用下的結(jié)構(gòu)內(nèi)力分布與影響，并得到了綜合管廊彎管設(shè)計(jì)中管道與支墩設(shè)計(jì)內(nèi)力控制截面。該研究工作可為城市綜合管道建設(shè)設(shè)計(jì)提供指導(dǎo)，并為管廊安全運(yùn)營(yíng)提供重要的技術(shù)支撐。
- Abstract:
- In recent years, the construction of the urban utility tunnel has been vigorously promoted with the construction, renewal and reconstruction of municipal pileline network in China. The water supply pipeline, as the most important part of the urban pipe network, has gradually changed from underground to overhead laying with supports or hangers in utility tunnels. Because water supply pipe is a pressure pipe with different angle connection, its water pressure will produce additional thrust force on the pipes bend. This paper analyzes the mechanical problems of DN800 ductile iron pipe bend, and the bearing capacity of buttresses is also investigated in urban utility tunnel. The thrust force of 2 groups with 9 working conditions of DN800 ductile iron pipe is stimulated by the fluid-solid coupling FEM method. The internal force control section for the pipe and buttress in the designed bend is obtained. The research work can provide a technical reference for the design and safe operation of the urban utility tunnel.
相似文獻(xiàn)/References:
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HUANG Zhi-gang.Application of Long-distance Curved Pipe Jacking for Crossing Rock Formation in Water Supply Pipeline Construction[J].China Water & Wastewater,2020,36(20):39.
[2]楊振東,曹亞龍,張巧玲,等.含泄漏供水管道瞬變流動(dòng)特征及泄漏定位[J].中國(guó)給水排水,2021,37(15):35.
YANG Zhen-dong,CAO Ya-long,ZHANG Qiao-ling,et al.Transient Flow Characteristics and Leakage Location of Water Supply Pipeline with Leakage Points[J].China Water & Wastewater,2021,37(20):35.
[3]何楠,郭浩,劉菁,等.供水管道中金屬污染物富集與釋放研究進(jìn)展[J].中國(guó)給水排水,2022,38(2):21.
HE Nan,GUO Hao,LIU Jing,et al.Research Progress on Enrichment and Release of Metal Pollutants in Water Supply Pipelines[J].China Water & Wastewater,2022,38(20):21.
