首页|匝道桥梁多因素耦合作用下的墩柱水平裂缝成因及稳定性分析

匝道桥梁多因素耦合作用下的墩柱水平裂缝成因及稳定性分析

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分析了墩梁约束形式、环境温度、收缩徐变以及汽车制动力和离心力等因素对墩柱水平裂缝的影响机理,选取国内某匝道桥进行水平裂缝现场检测调查和考虑以上因素的有限元数值模拟,并在此基础上对墩柱稳定性进行分析,分析结果表明:多因素耦合荷载组合作用下,桥墩底部最大拉应力超过混凝土抗拉强度设计值,桥墩底部受拉侧出现水平裂缝,桥墩稳定性满足要求.
Horizontal cracking cause and stability analysis of the pier and column of the ramp bridge under multi-factor coupling
This article analyzes the influence mechanism of pier-bearing constraints,environmental temperatures,shrinking slow changes,and car brake and centrifugal force on the horizontal cracks of the pier pillar.Simulation,and analyzed the stability of the pier pillars on this basis.The analysis results show that under the action of multi-factor coupling load,the maximum tensile stress at the bottom of the bridge pier exceeds the design value of the concrete tensile strength,and the level of the pier at the bottom of the bridge pier is horizontal cracks,and the bridge pier is stability meets the requirements.

ramp bridgepier column crackspier beam constraintsshrinking slow changesstability analysis

刘友坤、张家琪、韦青

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山东高速工程检测有限公司,山东济南 250002

匝道桥梁 墩柱裂缝 墩梁约束形式 收缩徐变 稳定性分析

2024

山东交通科技
山东省交通科学研究所

山东交通科技

影响因子:0.249
ISSN:1673-8942
年,卷(期):2024.(1)
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