桥梁伸缩缝问题现在仍处于探索研究中,它对公路车道的平整度影响较大。为了改善路面与桥面相接处的平整度,一方面应当加大桥梁的联孔长度以减少伸缩缝的数量,另一方面要不断改进伸缩缝的型式、材料以及设计和施工质量。目前,伸缩缝问题的研究、探讨及改进已引起国内外桥梁专家学者的关注,在此就伸缩缝问题作如下简述。 Bridge expansion joint problem is still in exploration and research, it has a greater impact on the smoothness of road lanes. In order to improve the flatness of the road surface in contact with the deck, on the one hand, the joint length of the bridge should be increased to reduce the number of expansion joints; on the other hand, the type and materials of expansion joints and the quality of design and construction should be continuously improved. At present, the research, discussion and improvement of expansion joints have drawn the attention of bridge experts and scholars at home and abroad. Here we briefly describe the expansion joints.