摘要
随着国家践行“双碳”战略和工业化建筑时代的到来,桥梁作为生命线节点工程正在向着装配化、工业化的方向大步迈进,而钢管混凝土组合桁梁桥作为一种高性能组合结构桥梁形式在承载性、承灾性及装配化等方面具有优势,融合“工业化建造”“绿色建材”理念是实现钢管混凝土组合桁梁桥绿色建造的有效手段。为此,从高传力体系、高承载力结构构造及高承载力节点构造等方面阐述了矩形钢管混凝土组合桁梁桥的构造优势,证明其是一种高承载性能桥梁结构形式,从高韧性与高经济性方面进一步论述了矩形钢管混凝土组合桁梁桥的优势所在,并就抗震性能、工程经济性与常规混凝土梁桥进行类比;而后从全预制件装配单元、预制件现场快速拼装角度阐述了矩形钢管混凝土组合桁梁的工业化建造理念,提出与快速拼装相适应的构造措施,并对具有绿色高强优点的碱激发UHPC混凝土应用于钢管混凝土组合桁梁桥进行了构思和设想;最后通过典型工程实践证实了钢管混凝土组合桁梁桥具有轻质高强、力流传递明确的显著特征和高效的装配建造性能。
With the implementation of the"dual carbon"strategy by the country and the arrival of the era of industrial construction,bridges as lifeline node projects are being developed toward assembly and industrialization.As a high-performance composite structure bridge type,the concrete-filled steel tubular(CFST)composite truss bridge has bearing capacity,disaster resistance,and assembly advantages.Integrating the concepts of"industrial construction"and"green building materials"effectively achieves the green construction of CFST truss bridges.Therefore,regarding high transmission systems,high-bearing-capacity structural constructions,and high-bearing-capacity joints,a rectangular concrete-filled steel tubular(RCFST)composite beam bridge is a high-performance bridge structure.Further,considering high resilience and economy,the advantages of the RCFST composite truss bridge are discussed,and the seismic performance and economy of a conventional concrete beam bridge are compared.Subsequently,the concept of the industrialized construction of RCFST composite truss bridges was elaborated from the perspective of fully prefabricated assembly units and on-site rapid assembly of prefabricated parts,and structural measures suitable for rapid assembly were proposed.Applying alkali-activated UHPC concrete,which has the advantages of green and high strength,to CFST composite beam bridges was conceived and envisaged.Finally,typical engineering practices confirmed that CFST composite truss bridges are lightweight and high-strength,have clear force transmission,and exhibit efficient assembly and construction performance.
作者
刘彬
刘永健
姜磊
蒲北辰
马国纲
孙明贺
LIU Bin;LIU Yong-jian;JIANG Lei;PU Bei-chen;MA Guo-gang;SUN Ming-he(CSCEC AECOM Consultants Co.Ltd.,Lanzhou 730030,Gansu,China;School of Highway,Chang'an University,Xi'an 710064,Shaanxi,China;Civil Engineering School,Chongqing University,Chongqing 400045,China)
出处
《中国公路学报》
EI
CAS
CSCD
北大核心
2023年第9期20-33,共14页
China Journal of Highway and Transport
基金
甘肃省住房和城乡建设厅建设科技项目(JK2023-39,JK2023-31)
中国市政工程西北设计研究院有限公司科技计划项目(XBSZKY2207,2206)
陕西省留学人员科技活动择优资助项目(2021-11)。
关键词
桥梁工程
钢管混凝土组合桁梁桥
综述
绿色建造
工业化
bridge engineering
CFST composite beam bridge
review
green construction
industrialization
