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大跨径斜拉桥施工监控技术

Author(s)：
于立谦

Publication Title：

Wen Yuan (Primary School Edition) 2021 No.11

Affiliations：
中铁建大桥工程局集团第四工程有限公司黑龙江哈尔滨 150050

Abstract：
大跨径斜拉桥是都高次超静定结构，其特点是设计与施工高度耦合，即斜拉桥所采用的施工方法、施工中斜拉索张拉的顺序和张拉力大小、施工节段的安装高程、材料性能以及施工过程中桥梁周围大气的湿度与温度都将直接影响到成桥状态的结构内力分布与成桥线型。由于主梁、塔墩及斜拉索三者之间刚度相差较大，受施工临时荷载、温度变化等因素的影响，使得受力与变形之间的关系非常复杂。如何通过施工的索力和高程的调整来获得预先设计的应力状态和几何线型，是斜拉桥施工中最为困难的问题之一。

Keywords：
大跨径；斜拉桥；结构内力分布；成桥线型

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[1] 于立谦.大跨径斜拉桥施工监控技术[J].Wen Yuan (Primary School Edition),2021(11),.

文渊(小学版)

Wen Yuan (Primary School Edition)

Language: 中文

CN：11-9274/G

ISSN：2096-6261

Publication Frequency: 月刊

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