摘要
2020年,全国城市市政共用设施建设固定资产投资总额为22283.9亿元,其中,路桥投资占比最大为35.1%,且有逐年上升的趋势,各种路桥建设需求随着城市化进程的推进摆在了路桥建设者的面前。路桥建设关乎着一个城市的发展,所以我国应加强桥梁建设质量管理工作。预应力技术的应用在其建设中发挥了巨大作用,预应力是指施工期间给结构预先施加的压应力,结构在服役期间预加压应力可全部或部分抵消荷载导致结构产生的拉应力,以提升工程质量。
In 2020,the total investment amount of fixed assets in the construction of municipal public facilities in China’s cities is 2,228.39 billion yuan,of which the road and bridge investment accounts for the largest proportion,up to 35.1%,and there is a trend of increasing year by year.The road and bridge builders are facing the demand for road and bridge construction along with the advance of urbanization process.The construction of roads and bridges is related to the development of a city,so China should strengthen the quality management of bridge construction.The application of prestressing technology has played a huge role in its construction.Prestressing refers to the compressive stress that is previously applied to the structure during construction.The precompressed stress of the structure during service life can fully or partially offset the tensile stress caused by the load to the structure,so as to improve project quality.
作者
石峰
Shi Feng(Guangzhou No.2 Municipal Engineering Co.,Ltd.,Guangzhou 510060,Guangdong Province,China)
出处
《建筑与装饰》
2022年第20期111-113,共3页
Construction & Decoration
关键词
市政路桥
预应力技术
存在问题
解决
对策
municipal roads and bridges
prestressing technology
existing problems
solutions
countermeasures
