at present, crack phenomenon always appears in long span prestressed concrete continuous beam bridges used, the reason of which is that the structure prestressed loss is estimated lower.
目前,在部分已建成运营的大跨度预应力混凝土连续梁桥的不同部位出现了不同程度的开裂现象,多数是由于施工时对结构预应力损失估计不足所造成的。
this paper introduces the comparison of bridge projects, prestressed concrete continuous beam frame, engineering material quantity and bos beam closure sequence etc of dayu river bridge.
本文主要介绍了大峪河大桥的桥型方案选择、预应力混凝土连续箱梁构造、箱梁预应力布置、全桥主要工程材料数量及用量指标,同时介绍了箱梁的合拢顺序。
the prestressed concrete continuous beam built by the method is equivalent to the beam in practice.
采用该试验方法建立起来的预应力连续梁与实际工程中的预应力连续梁是等价的。
recent years, prestressed concrete continuous beam bridges develop quickly. it is widely used in the city and rode bridge building .
预应力混凝土连续梁桥近年来迅速发展,在城市桥梁及公路桥梁中广泛采用。
then the gray system theory is applied in the construction control of long-span prestressed concrete continuous beam bridge.
从而将灰色系统理论成功应用到大跨度预应力砼连续梁桥的施工控制中。
base on the above theoretical analysis, the article carries on the time-dependent system reliability analysis to some prestressed concrete continuous beam bridge.
基于以上的理论分析,本文对某预应力混凝土连续梁桥进行时变系统可靠度分析。