基于应力监测的钢-UHPC组合桥面和环氧沥青钢桥面疲劳性能对比
U443.31; 为评估不同桥面加固方案对正交异性桥面板疲劳性能的改善情况,对比了钢-UHPC组合桥面和环氧沥青桥面铺装的桥梁疲劳性能.基于连续一周的应力时程数据,采用线性累积损伤准则计算了各疲劳易损细节的最大应力幅、等效应力幅和疲劳剩余寿命.建立有限元模型,对2种方案加固后的桥面刚度进行了定量对比,分析了车流量及温度变化对疲劳易损细节疲劳寿命的影响.结果表明:钢-UHPC组合桥面在各疲劳易损细节的最大应力幅和等效应力幅均小于ERE铺装桥面;除疲劳寿命为无穷大的疲劳易损细节外,钢-UHPC组合桥面疲劳易损细节疲劳寿命均大于ERE铺装桥面;钢-UHPC组合桥面拥有更大的抗弯刚度,钢-UHPC桥面...
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| Published in | 东南大学学报（自然科学版） Vol. 51; no. 1; pp. 61 - 70 |
|---|---|
| Main Authors | , , , |
| Format | Journal Article |
| Language | Chinese |
| Published |
中铁大桥局集团有限公司桥梁结构健康与安全国家重点实验室,武汉430034
20.01.2021
武汉理工大学土木工程与建筑学院,武汉430070%中铁大桥科学研究院有限公司,武汉430034 |
| Subjects | |
| Online Access | Get full text |
| ISSN | 1001-0505 |
| DOI | 10.3969/j.issn.1001-0505.2021.01.009 |
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| Abstract | U443.31; 为评估不同桥面加固方案对正交异性桥面板疲劳性能的改善情况,对比了钢-UHPC组合桥面和环氧沥青桥面铺装的桥梁疲劳性能.基于连续一周的应力时程数据,采用线性累积损伤准则计算了各疲劳易损细节的最大应力幅、等效应力幅和疲劳剩余寿命.建立有限元模型,对2种方案加固后的桥面刚度进行了定量对比,分析了车流量及温度变化对疲劳易损细节疲劳寿命的影响.结果表明:钢-UHPC组合桥面在各疲劳易损细节的最大应力幅和等效应力幅均小于ERE铺装桥面;除疲劳寿命为无穷大的疲劳易损细节外,钢-UHPC组合桥面疲劳易损细节疲劳寿命均大于ERE铺装桥面;钢-UHPC组合桥面拥有更大的抗弯刚度,钢-UHPC桥面板最大挠度为ERE铺装桥面的67.29％;车流量增多对2种方案加固后桥面疲劳易损细节疲劳寿命的影响基本一致,钢-UHPC组合桥面抗高温性能更好. |
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| AbstractList | U443.31; 为评估不同桥面加固方案对正交异性桥面板疲劳性能的改善情况,对比了钢-UHPC组合桥面和环氧沥青桥面铺装的桥梁疲劳性能.基于连续一周的应力时程数据,采用线性累积损伤准则计算了各疲劳易损细节的最大应力幅、等效应力幅和疲劳剩余寿命.建立有限元模型,对2种方案加固后的桥面刚度进行了定量对比,分析了车流量及温度变化对疲劳易损细节疲劳寿命的影响.结果表明:钢-UHPC组合桥面在各疲劳易损细节的最大应力幅和等效应力幅均小于ERE铺装桥面;除疲劳寿命为无穷大的疲劳易损细节外,钢-UHPC组合桥面疲劳易损细节疲劳寿命均大于ERE铺装桥面;钢-UHPC组合桥面拥有更大的抗弯刚度,钢-UHPC桥面板最大挠度为ERE铺装桥面的67.29％;车流量增多对2种方案加固后桥面疲劳易损细节疲劳寿命的影响基本一致,钢-UHPC组合桥面抗高温性能更好. |
| Author | 秦世强 高立强 黄春雷 张佳斌 |
| AuthorAffiliation | 武汉理工大学土木工程与建筑学院,武汉430070%中铁大桥科学研究院有限公司,武汉430034;中铁大桥局集团有限公司桥梁结构健康与安全国家重点实验室,武汉430034 |
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| Author_FL | Gao Liqiang Huang Chunlei Zhang Jiabin Qin Shiqiang |
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| Keywords | 正交异性桥面板 应力监测 桥梁工程 钢-UHPC组合桥面 疲劳评估 |
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| Title | 基于应力监测的钢-UHPC组合桥面和环氧沥青钢桥面疲劳性能对比 |
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