[1]孙振杰.城市高架桥分块预制承台的抗震性能分析[J].华南地震,2021,41(02):119-124.[doi:10.13512/j.hndz.2021.02.17
]
SUN Zhenjie.Seismic Performance Analysis of Prefabricated Block Caps of Urban Viaducts[J].,2021,41(02):119-124.[doi:10.13512/j.hndz.2021.02.17
]
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城市高架桥分块预制承台的抗震性能分析()
华南地震[ISSN:1006-6977/CN:61-1281/TN]
- 卷:
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41
- 期数:
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2021年02期
- 页码:
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119-124
- 栏目:
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土木工程防震减灾
- 出版日期:
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2021-06-20
文章信息/Info
- Title:
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Seismic Performance Analysis of Prefabricated Block Caps of Urban Viaducts
- 文章编号:
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1001-8662(2021)02-0119-06
- 作者:
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孙振杰
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(上海公路桥梁(集团)有限公司,上海 200433)
- Author(s):
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SUN Zhenjie
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(Shanghai Road and Bridge(Group) Co.,Ltd.,Shanghai 200433,China)
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- 关键词:
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分块预制承台; 快速化施工; 抗震性能; 承台配筋率
- Keywords:
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Prefabricated block caps; Rapid construction; Seismic resistance; Reinforcement ratio of pile caps
- 分类号:
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TU352.11
- DOI:
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10.13512/j.hndz.2021.02.17
- 文献标志码:
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A
- 摘要:
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目前大部分的城市高架桥梁承台仍然采用现浇结构,其施工工序较多,工期长。为了提高桥梁快速化施工水平,针对上海市济阳路(卢浦大桥-闵行区界)快速化改建工程项目,提出了一种分块预制承台结构形式,并采用FLAC3D软件模拟了地震作用下预制承台结构的力学特性。通过数值模拟分析了承台相对刚度、桩基直径、承台配筋率等因素对预制承台结构的抗震性能影响。结果表明:拼装预制承台的抗震特性较好,预制拼接承台的沉降一致,左右两半沉降均相同,而在预制承台与立柱接触面竖向位移较大;以及桩基直径和承台配筋率存在合适值对承台拼接处受力性能较好。
- Abstract:
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The cast-in-place structure are still adopted in most of the urban viaduct construction,with many construction procedures and long construction periods. In order to improve the level of the rapid construction of the bridge,in view of the rapid reconstruction project of Jiyang Road(Lupu Bridge-Minhang District)in Shanghai,this paper proposes a form of prefabricated block pile caps and uses FLAC3D software to simulate the mechanical properties of precast cap structure under earthquake action. The influence of factors such as the relative stiffness of the cap,the diameter of the pile foundation and the reinforcement ratio of the cap on the seismic performance of the precast cap structure are analyzed by numerical simulation. The results show that: the prefabricated block pile caps has good seismic properties,the settlement of the prefabricated cap is consistent,and the settlement of the left and right halves is the same,while the displacement at the contact surface of the prefabricated cap and the column is large;the appropriate values of pile foundation diameter and pile cap reinforcement ratio have better mechanical performance at joints of caps.
参考文献/References:
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[12] 张鹏,王艺环,秦国晋. 非随机过程的地震激励下埋地压力管道的非概率可靠性分析[J]. 中国安全生产科学技术,2018,14(6):134-141.
备注/Memo
- 备注/Memo:
-
收稿日期:2020-12-10
基金项目:国家自然科学基金资助项目(51678352)
作者简介:孙振杰(1990- ),男,工程师,主要从事市政高速桥梁建设管理和加固维修工作。E-mail:szjlyg@qq.com
更新日期/Last Update:
2021-06-20