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1·This paper explained the construction technology of the bearing replacement for quasi-continuous T-girder bridge and analyzed the causes of bearing disease.

本文着重介绍准连续T型梁桥支座替换工程施工技术，并分析支座病害原因。

2·Controlling for distortion of main box girder carrier-track welded with T-beam is introduced in the paper.

介绍了对T型钢承轨偏轨箱形主梁的焊接变形控制。

3·The results of the loading test show that T-type girder made of manufactured-sand concrete has high load-carrying ability and anti-deformability.

同时，荷载试验还表明，机制砂混凝土T梁具有高的承载能力和抗变形能力。

4·On basis of a prestressed concrete T-type rigid frame box girder bridge, the paper compares the advantages and disadvantages of different reinforcement options.

以某预应力混凝土T型刚构箱梁桥为背景，对采用不同加固方案的优缺点进行比选，最后从技术可行性和经济角度推荐采用碳纤维CFRP加固方案。