摘要
新型多主梁叠合板钢混组合梁桥体系(简称组合板梁桥)综合运用了叠合板、抗拔不抗剪连接、组合盖梁等新型工程技术,通过发挥材料的组合作用,使主梁高度降低、结构刚度增大、抗震性能改善,具有施工快速、结构可靠、环境影响小等优点,有很强的竞争优势。对该体系的工程应用和成桥试验展开研究,主要结论如下:①总结了组合板梁桥体系相对于传统桥梁体系的推广优势;②对依托工程进行了静载和动载试验,结果表明工程整体工作性能良好,其承载能力满足设计要求;③对组合桥梁采用梁-壳模型进行有限元建模,效果良好,刚接板法计算横向分布系数较为准确。
By combination of steel and concrete,multi-girder steel-concrete composite beam bridge has achieved a reduction in structural height with an improvement in structural rigidity and seismic performance,improving its competitiveness.This paper studies the application and load test of the system in a demonstration project.The main content is as follows.①Summarize the advantages of the multi-girder composite beam bridge system over the traditional bridge system.②Depict the content of the static and dynamic load test of the demonstration project.The results show that the overall working performance and bearing capacity of the project meet the design requirements.③Use beam and shell elements to model the project,which work well and the accuracy of the rigid-jointed plate method is verified.
作者
李聪
聂鑫
LI Cong;NIE Xin(Hunan Provincial Communications Planning, Survey & Design Institute Co.,LTD.,Changsha,Hunan 410200,China;Department of Civil Engineering,Tsinghua University,Beijing 100086,China)
出处
《公路工程》
2021年第6期92-102,共11页
Highway Engineering
基金
清华大学土木工程系优秀青年科学基金项目(52022045)
中国铁路总公司重大课题项目(K2019G004)。
关键词
钢混组合梁桥
多主梁
有限元
刚接板法
成桥试验
steel-concrete composite beam bridge
multi-girder
finite element analysis
rigid-jointed plate method
load test
