Abstract: The constr uction of the joints of simply-suppor ted girder bridges used in extension projects of expressways and the construction technology of the commonly used joints of both simply-supported plate girders and simply-supported T-beams will be studied. The technical requirements of joint design will be analyzed first. Then according to the requirements, the key technological study of the construction of the joints will be carried out. At the conclusion, the corresponding construction measures and proposals will be put forward.

Key words: simply-supported beam, joint, construction, expressway, extension

摘要： 针对高速公路扩建工程的简支梁桥拼接施工,对于常用的简支板梁和简支T梁的拼接施工工艺进行了研究.首先分析了拼接设计的技术要求,并根据以上要求,对拼接施工中的关键工艺进行了研究和总结,提出了相应的施工对策和建议.

关键词: 简支梁, 拼接, 施工, 高速公路, 扩建