桥梁支座更换顶升工艺

On craft of replacement of lift-up on bridge bearing

结合具体工程实例,对茂湛高速公路茂名高架桥支座脱空原因进行了分析,提出了确保梁体顶升作业安全必须满足的工艺要求,对更换支座方案进行了详细的说明,以使桥体在更换支座中符合有关规范要求,保证行车和施工安全。

By combining with examples, the paper analyzes reasons for the unjoint in Maoming viaduct＇s bearing along Maoming to Zhanjiang expressway, points out some craft requirements which can guarantee the safety of the lift-up on the girder body, and indicates the replacement scheme, in order to make the bridge meet some relative requirements in replacing girder body, and to ensure the security of the construction and driving on it.