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随着我国高等级公路建设中对预应力混凝土连续箱梁的应用日益广泛,施工水平也会有一定程度的提升。由于运用预应力混凝土会使箱梁能够对现代高强度材料进行有效利用,使耐疲劳强度得体提升,节省刚才,使构件截面得以减小,因此一般在荷载作用下不会有裂纹问题产生。
With the increasing use of prestressed concrete continuous box girders in the construction of high-grade highways in our country, the construction level will also be improved to a certain extent. As the use of prestressed concrete box girder will be able to make effective use of modern high-strength materials, the fatigue resistance of the body to enhance the body, save just so that the cross-section can be reduced, it is generally under load will not have a crack problem.