钢板加固的空心板桥梁的横向分布系数的研究
1. 大连理工大学, 海岸和近海工程国家重点实验室, 辽宁大连 116024
2. 辽宁省交通规划设计院有限责任公司,, 辽宁沈阳 110166
| 摘 要： | 本文通过一种新型粘贴钢板加固方法用以恢复空心板梁横向联系，从而使加固后的桥梁能够满足结构的正常使用功能。对京沈高速公路绥中至沈阳段跨度为8m的混凝土空心板原梁采用粘贴钢板法加固，加固完成后进行偏载工况加载并运用abaqus软件进行数值计算。基于桥梁结构荷载横向分布系数理论，采用不同计算方法得到加固后试验梁荷载横向分布系数，验证铰接板法可以用于粘贴钢板加固后的空心板梁计算。此外，结合前期计算、试验结果与数值分析，讨论新型粘贴钢板加固法对桥梁横向联系的恢复效果。结果表明：铰接板法可以用于粘贴钢板加固后的空心板梁荷载横向分布系数计算，同时粘贴钢板加固法能够有效恢复空心板间横向联系，满足桥梁结构使用功能。 |
| 关 键 词： | 桥梁加固; 横向联系; 混凝土空心板; 粘贴钢板法; 数值计算 |
| DOI： | 10.57237/j.cear.2023.01.003 |
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收稿日期: 2023-02-02
接受日期: 2023-03-17
在线出版日期: 2023-03-28
Study on Lateral Distribution Coefficients of Hollow Slab Bridges After Reinforced by Pasted Steel Plates
1. State key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China
2. Liaoning Provincial Communication Planning & Design Institute Co., Shenyang 110166, China
| Abstract: | This paper adopts a new method of pasting steel plate to restore the transverse connection of hollow slab bridge, so that the strengthened bridge can meet the requirements under the state of serviceability. The original beam of the concrete hollow slab with a span of 8m from the Suizhong to Shenyang section of Jing-Shen highway was reinforced by a method of pasting steel plates. In the test the eccentric load condition was loaded and the abaqus software was used for numerical calculation after the reinforcement. Based on the theory of load transverse distribution coefficient of bridge structure, different calculation methods were used to obtain the transverse load distribution coefficient of the strengthened test beam, and it is verified that the hinged plate method can be used to calculate the hollow slab beam strengthened with steel plate. In addition, combined with previous calculations, test results and numerical analysis, this paper discusses the restoration effect of the new type of pasted steel plate reinforcement method on the bridge lateral connection. The results show that the hinged plate method can be used to calculate the load lateral distribution coefficient of hollow slab beams strengthened by pasted steel plates. therefore, the pasted steel plate reinforcement method can effectively restore the horizontal connection between the hollow slabs and meet the use of bridge structures. |
| Keywords: | Bridge Reinforcement; Lateral Connection; Concrete Hollow Slab; Pasted steel Plate Method; Numerical Calculation |
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