The brake beam(connecting plate) is often broken, and the bolts for fixing the connecting plate are loosed due to the crane′s dynamic load when D series of crane beams are working in a steel plant.

某钢厂列吊车梁在工作中，由于吊车工作的动态作用，导致制动梁（连接板）经常发生断裂，固定连接板的螺栓松动。

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Heavier steel products, such as plate, I beams, Angle iron, pipe, and bar, form the structural frames of buildings, Bridges, ships, automobiles, roadways, and many other structures.

较重的钢铁产品，如钢板，我梁，角钢，钢管，和酒吧，成为建筑物的结构框架，桥梁，船舶，汽车，道路，以及许多其他结构。

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So far, a great deal of research work has been done for RC beams strengthened by bonded CFRP or steel plate, but only rather little for two-way RC slabs.

为此，本文着重对受集中荷载的外贴碳纤维或钢板条带的钢筋混凝土加固双向板的受力性能进行了试验研究。

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