软土地区长期不均匀沉降对预制综合管廊的影响研究
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摘要
为了研究软土地区长期不均匀沉降对预制综合管廊的影响,依据南京和上海地铁的沉降监测数据,采用ANSYS软件建立预制综合管廊的有限元模型,研究不均匀沉降对综合管廊节间裂缝宽度的影响。研究结果表明,软土地区长期不均匀沉降对预制综合管廊节间裂缝影响不能忽略,有可能造成连接螺栓的破坏和防水节点失效,必须采取措施加以避免。
In this paper, based on monitored data from Nanjing Metro and Shanghai Metro, the effects of long-term differential settlement in soft soil foundation on precast concrete utility tunnel is investigated. A finite element model of precast concrete utility tunnel is created by using ANSYS to study the effects of differential settlement on the crack width between utility tunnel segments. The results show that the effects of long-term differential settlement in soft soil foundation cannot be neglected,which may contribute to the failures of bolts and waterproof joints, therefore, necessary measures must be taken to prevent these failures.
In this paper, based on monitored data from Nanjing Metro and Shanghai Metro, the effects of long-term differential settlement in soft soil foundation on precast concrete utility tunnel is investigated. A finite element model of precast concrete utility tunnel is created by using ANSYS to study the effects of differential settlement on the crack width between utility tunnel segments. The results show that the effects of long-term differential settlement in soft soil foundation cannot be neglected,which may contribute to the failures of bolts and waterproof joints, therefore, necessary measures must be taken to prevent these failures.
引文
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[3]周健民.综合管廊变形缝接头的设计形式及适用性分[J],特种结构, 2016, 33(2):60-65.
[4]狄宏规,周顺华,宫全美,等.软土地区地铁隧道不均匀沉降特征及分区控制,岩土工程学报, 2017, 37(S2):74-79.
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[6]屈财魏,江一博,李文,等.城市综合管廊基坑施工变形及稳定性分析[J],湖南文理学院学报, 2018,30(2):84-89.
[7]董倩倩,邓耀章,韦彬滨.城市新区地下综合管廊的设计研究[J],中华建设, 2018, 4(1):1-4.
[8]胡翔,薛伟辰,王恒栋,等.上海世博园区预制预应力综合管廊施工监测与分析, 2009, 26(2):105-108.
[2]薛伟辰,王恒栋,胡翔.上海世博园区预制预应力综合管廊的经济性分析[J],特种结构, 2009, 26(2):101-104.
[3]周健民.综合管廊变形缝接头的设计形式及适用性分[J],特种结构, 2016, 33(2):60-65.
[4]狄宏规,周顺华,宫全美,等.软土地区地铁隧道不均匀沉降特征及分区控制,岩土工程学报, 2017, 37(S2):74-79.
[5]杨剑,王恒栋.液化土中地下综合管廊的地震响应分析初探[J],地下空间与工程学报,2013,9(1):1762-1769.
[6]屈财魏,江一博,李文,等.城市综合管廊基坑施工变形及稳定性分析[J],湖南文理学院学报, 2018,30(2):84-89.
[7]董倩倩,邓耀章,韦彬滨.城市新区地下综合管廊的设计研究[J],中华建设, 2018, 4(1):1-4.
[8]胡翔,薛伟辰,王恒栋,等.上海世博园区预制预应力综合管廊施工监测与分析, 2009, 26(2):105-108.