Application and Practice of High-performance Materials and Durability Design in Long Span Cable-stayed Bridges
The application of high-performance materials and processes is a kind of concept innovation,but also a kind of technological innovation.Using empirical analysis method,this paper discusses the application details and implementation effects of high-performance durable materials in long-span cable-stayed Bridges,and draws the following conclusions:the application of high performance concrete can greatly improve the efficiency of material use,reduce the section size and structural weight,simplify the structural reinforcement,simplify the construction process,which is suitable for all kinds of structural forms and installation methods,especially in the steel-mixed structure,and the advantages are more prominent;the use of high-strength steel structure can effectively reduce the weight of components and the difficulty of construction;the comprehensive long-term anticorrosive system of the cable effectively meets the durability and wind dynamic performance requirements of the bridge,effectively takes into account the convenience of component replacement during operation,and has shorter traffic restriction time and less impact.The positive impact force reduction of the new high performance pier anti-ship collision energy dissipation device is 38.0%.
high performance materialsdurability designlong span cable-stayed bridgesfull life cyclequality improvement anded carbon reduction
万方数据
维普
