某预应力混凝土简支空心板梁桥加固设计

Strengthening design of a prestressed concrete simply-supported hollow slab girder bridge

随着公路运输事业的不断发展,桥梁服役年限增加,大量早期建造的空心板梁桥已不能满足现有的交通量需求和规范的要求,亟需进行维修改造。以某预应力混凝土简支空心板梁桥维修工程为例,空心板结构承载能力通过板端填充、体系转换的方法得到了提高,能够达到现行规范中设计荷载的要求,使桥梁的安全运营得到了保障。

With the continuous development of highway transportation and the increase of bridge service life,a large number of hollow slab girder bridges built in the early stage can no longer meet the existing traffic demand and the requirements of the specifications,so it is urgent to carry out maintenance and reconstruction.Taking the maintenance project of a prestressed concrete simply-supported hollow slab girder bridge as an example,the bearing capacity of the hollow slab structure has been improved through the method of slab end filling and system transformation,which can meet the requirements of the design load in the current specifications,and ensure the safe operation of the bridge.