用预应力措施处理连续结合梁中负弯矩区

连续结合梁中负弯矩区混凝土桥面板会因承受较大拉应力而开裂,会引起钢筋及钢梁腐蚀等严重问题,影响结构的承载能力和耐久性。文章分析和介绍了对负弯矩区的一些处理方法,并指出了各种方法的优缺点。

Using prestressed measures to deal with negative moment area of the continuous composite beam

Continuous composite beam in the negative moment area of concrete bridge decks bears more stress and brings cracking,these would cause serious problems such as the corrosion of steel and steel beam,and these affect the structure of the carrying capacity and durability.This paper analysed and presented some treatment methods about the negative moment area and pointed out the advantages and disadvantages of various methods.