Influence of Demolition Method on Stents Stress in Horizontal Swing Continuous Beam Bridge

doi:10.3969/j.issn.1674－0696.2012.supp.1.34

Journal of Chongqing Jiaotong University(Natural Science) ›› 2012, Vol. 31 ›› Issue (增1): 676-680.DOI: 10.3969/j.issn.1674－0696.2012.supp.1.34

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Influence of Demolition Method on Stents Stress in Horizontal Swing Continuous Beam Bridge

Wang Zhen¹，Wu Haijun¹，Zhang Lei²，Liu Jian¹

1. School of Civil Engineering ＆ Architecture，Chongqing Jiaotong University，Chongqing 400074，China; 2. Changzhi Expressway Co. ，Ltd. ，Changzhi 046000，Shanxi，China

Received:2012-02-26 Revised:2012-05-07 Online:2012-07-15 Published:2015-03-12

现浇平转连续梁桥拆架方式对支架受力的影响

王桢¹，吴海军¹，张雷²，刘健¹

1. 重庆交通大学土木建筑学院，中国重庆400074 ，2. 长治高速公路有限责任公司，中国山西长治046000

通讯作者: 交通运输部西部交通建设科技项目( 2006-318-223-02-06)
作者简介:王桢(1986 — )，男，陕西安康人，硕士研究生，主要从事桥梁结构分析方面的工作。E-mail:458695612@qq.com。

Abstract

Abstract: The finite element model combined with practical engineering was built to analyze the influence of different demolition methods to force variations． The maximum load in stent demolition was compared with load before demolition． The results showed that the maximum load of demolition method was 234% of load before demolition，which meant the inappropriate demolition method can cause stent instability failure． Influence of demolition method cannot be ignored in the tent force analysis．

Key words: horizontal rotary continuous beam bridge, stressing influence, cast-in-place construction, the stent demolition method

摘要： 结合工程实例建立有限元模型分析了不同支架拆除方式下支架的受力变化情况，并将拆除过程中支架所受最大荷载和支架拆除前的荷载进行了比较。研究结果表明从悬臂端向桥墩方向的拆架方式下支架所受最大荷载达到支架拆除前荷载的234%，说明了拆架方式不当可能会引发支架失稳破坏，所以拆架方式对支架受力的影响是不容忽视的

关键词: 平转连续梁桥, 受力影响, 现浇施工, 拆架方式

CLC Number:

U445

Wang Zhen，Wu Haijun，Zhang Lei，Liu Jian. Influence of Demolition Method on Stents Stress in Horizontal Swing Continuous Beam Bridge[J]. Journal of Chongqing Jiaotong University(Natural Science), 2012, 31(增1): 676-680.

王桢，吴海军，张雷，刘健. 现浇平转连续梁桥拆架方式对支架受力的影响[J]. 重庆交通大学学报（自然科学版）, 2012, 31(增1): 676-680.

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Influence of Demolition Method on Stents Stress in Horizontal Swing Continuous Beam Bridge

现浇平转连续梁桥拆架方式对支架受力的影响

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