海洋环境下混凝土结构保护层厚度问题的研究

从钢筋混凝土裂缝形成的原因,探索了钢筋混凝土保护层的厚度对裂缝宽度的影响,为了限制裂缝宽度,保护层不宜过大;考虑海上桥梁钢筋混凝土结构所处的环境,探索钢筋锈蚀2个重要原因,并且确立氯离子的渗透作用是决定保护层最小厚度的主要因素,并以杭州湾跨海大桥为例,最后得出海洋环境下钢筋混凝土结构的合理保护层厚度。

The Research of the Thickness Problem of the Concrete Structure Protection Layer on the Ocean Environment

This text begins with the reason the reinforced concrete crack,investigated a reinforced concrete protection thickness' influence to crack width of the layer,thinking the protection layer should not led greatly;Consider the reinforced concrete structure of the ocean bridge the environment of place,investigated a reinforcing bar rust eclipse to is two important reason,and establish the osmosis of chlorine ion is the main factor which decides a protection layer minimum thickness,and with gulf in Hangzhou sail across ocean big bridge for example,have to go out to sea ocean environment to descend reinforced concrete structure finally of reasonable protection layer thickness with provide a related engineering design,construction and protect to maintain an unit reference.