变高度预应力混凝土连续箱梁桥底板受力特性研究

近年来,国内多座变高度预应力混凝土连续箱梁桥底板在施工过程或使用过程中,发生了纵向开裂甚至局部崩裂等病害。该文以实际工程为背景,对变高度预应力混凝土连续箱梁的底板受力特性进行了深入研究,对底板病害出现的原因进行了较为深入的分析,并提出了预防病害的措施。

Study on Stressing Characteristic of Bottom Plates of Varying-depth Prestressed Concrete Continuous Box Beam Bridge

Recently,many bottom plates of varying-depth prestressed concrete continuous box beam bridges burst cracks longitudinally and partially in the course of construction or service.The article deeply studies the stressing characteristic of bottom plate of this bridge,analyzes the cause of diseased bottom plates,and puts forward the measures to prevent the disease by taking the practical projects as the background.