基于力学分析的桥面铺装防水粘结层材料灰靶优选

于新; 李英涛; 刘云

doi:10.3969/j.issn.0258-2724.2012.06.028

基于力学分析的桥面铺装防水粘结层材料灰靶优选

doi: 10.3969/j.issn.0258-2724.2012.06.028

基金项目:

上海建设交通委员会科研项目资助(2009-003-006)

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出版历程
- 收稿日期: 2011-02-20
- 刊出日期: 2012-12-25

Grey Target Optimization of Waterproof Adhesive Material for Concrete Bridge Deck Pavement Based on Mechanical Analysis

摘要

摘要: 为了优选与混凝土箱梁桥防水粘结层实际受力状态相匹配的材料,以沪杭高速公路拓宽改建工程高架桥为例,采用有限元法建立了全桥模型,在分析刹车、超载、随机动荷载等因素对防水粘结层力学响应的基础上,利用灰靶理论优选室内实测典型防水粘结层的相关技术参数.研究结果表明:刹车超载使防水粘结层产生的剪应力大于由桥面不平度引起的防水粘结层剪应力,最大可达0.397 MPa;橡胶沥青和SBS改性沥青防水粘结层综合性能较优,可作为混凝土桥防水粘结层材料.
- 混凝土箱梁桥 /
- 防水粘结层 /
- 有限元法 /
- 灰靶
Abstract: In order to select the optimal waterproof adhesive material that meets the stress needs of concrete box girder bridge deck pavement, taking the viaduct in widening project of the Shanghai-Hangzhou Expressway as an example, a composite structure model of the whole bridge was established using the finite element method, and the influence of braking, overloading, random dynamic loading on the mechanical response of the waterproof adhesive layer was analyzed. The technique parameters of some typical materials for waterproof adhesive layer were tested in lab, and then analyzed by the grey target theory. The result shows that braking plus overloading has a larger effect on the shear stress of adhesive layer than the random dynamic loading caused by bridge deck roughness, and may produce a maximum shear stress of 0.397 MPa. The rubber asphalt and SBS modified asphalt both have good performance, and can be used as the material of waterproof adhesive layer.
- concrete box girder bridge /
- waterproof adhesive layer /
- finite element method /
- grey target

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参考文献(15)

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文章访问数: 1338
HTML全文浏览量: 64
PDF下载量: 488
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基于力学分析的桥面铺装防水粘结层材料灰靶优选

doi: 10.3969/j.issn.0258-2724.2012.06.028

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Grey Target Optimization of Waterproof Adhesive Material for Concrete Bridge Deck Pavement Based on Mechanical Analysis

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出版历程

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