首页|高速铁路桥梁装配式桥面系防护墙力学性能试验研究

高速铁路桥梁装配式桥面系防护墙力学性能试验研究

扫码查看
原文链接
  • 万方数据
  • 维普
装配式桥面系的研发应用有助于进一步提升铁路桥梁工业化建造水平.为了评估该新型整体式桥面附属设施结构的设计及制作工艺方法是否安全、合理可行,通过足尺模型设计制作、试验方案设计及全过程破坏试验,将预制拼装桥面附属设施防护墙结构在水平侧向荷载作用下的力学响应和破坏形态,与有限元仿真分析进行全面对比,得出各构件和连接构件的力学特点、变形规律及承载能力,防护墙实测破坏时的承载能力达到设计值的1.65 倍,表明预制拼装桥面附属设施防护墙能满足设计要求,具备较好的安全度,能够确保高速铁路桥梁的运营安全.同时,获得一种基于ABAQUS平台的预制拼装桥面附属设施防护墙仿真模拟方法,其控制荷载、变形大小均与试验过程和状态吻合度良好,最大峰值处偏差在0.7%以内,加载过程最大偏差在2.8%以内,验证提出的模拟方法有效性,说明有限元模型可以准确预测结构的实际受力状态.
Experimental Study on Mechanical Properties of Protective Wall of Assembled Bridge Deck System in High-speed Railway Bridge
The research and application of assembled bridge deck system is helpful to further promote the level of industrial construction of railway bridges.In order to evaluate the safety,rationality and feasibility of the design and fabrication process of the new type of integral bridge deck accessory structure,according to the stress response and failure mode of the prefabricated bridge deck accessory protective wall structure under horizontal load,the design and manufacture of full-scale model,test scheme design and whole process failure test were carried out and compared with finite element simulation analysis.The stress characteristics,deformation law and bearing capacity of each member and connecting member were obtained.The results show that the bearing capacity of the protective wall during the measured failure is 1.65 times of the design value,and the fabricated protective wall of the ancillary facilities on the bridge deck can meet the design requirements and has a good degree of safety,which ensures the operation safety of the high-speed railway bridge.At the same time,the simulation method of the protective wall of the precast bridge deck ancillary facilities based on the ABAQUS platform is obtained,the maximum deviation of the peak value is less than 0.7%,and the maximum deviation of the loading process is less than 2.8%,which verifies the effectiveness of the simulation method proposed in this paper,and shows that the finite element model can accurately predict the actual stress state of the structure.

high-speed railwayrailway bridgebridge deck systemprefabricatedultimate bearing capacitynumerical simulation

崔文凯、张崇斌、侯宇飞、严章荣

展开 >

中铁上海工程局集团第七工程有限公司,西安 710016

中铁工程设计咨询集团有限公司,北京 100055

中铁上海工程局集团有限公司,上海 201906

高速铁路 铁路桥 桥面系 装配式 极限承载力 数值模拟

中国中铁股份有限公司科研开发计划重点课题中国中铁股份有限公司科研开发计划重点课题中国中铁股份有限公司科研开发计划重点课题中铁工程设计咨询集团科研开发计划项目中铁工程设计咨询集团科研开发计划项目中铁工程设计咨询集团科研开发计划项目中铁工程设计咨询集团科研开发计划项目

2020-重大-072021-重大-05-012021-重大-10研2020-12研2021-26研2022-5研2023-5

2024

10.19630/j.cnki.tdkc.202304230004

铁道勘察
中铁工程设计咨询集团有限公司

铁道勘察

影响因子：0.542
ISSN：1672-7479
年,卷(期)：2024.50(1)
  • 19