吉林省高速公路桥梁伸缩装置的选型与安装

Expansion joint selection and installation in highway bridges in Jilin Province

通过对吉林省高速公路桥梁建设中伸缩装置[1]使用情况的调查,发现早期使用的桥梁伸缩装置有不同程度的破损现象,严重影响了行车的舒适性和安全性。经过分析,找到了伸缩装置破损的各种原因,通过对各种类型伸缩装置的对比,确定选用合适的伸缩装置并提出了施工方案。通过吉林省近几年高速公路的实践,取得了较好的效果,确保了桥梁工程的安全性和技术经济合理性。

Through the survey to the expansion joint selection and installation in highway bridges in Jilin province,the damage phenomena on the expansion joint with different degrees are found,which will have serious impacts on the driving comfort and safety. After analysis the various damaged reasons in expansion joint have been found. And through the contrast to various types of expansion joint, the appropriate type of expansion joint is determined, and the construction plan is also put forward. Better effects have been obtained by the practice in Jilin province highways in recent years. The safety of the bridge in construction, the technique, and economic： rationality are assured.