特殊条件下大跨度公路T型梁架设

The erection of the long-span highway T-shape girder under special construction condition

介绍了高速公路立交工程在施工条件限制的情况下,利用龙门吊、架桥机等施工机具对大跨度T梁进行架设的新型施工方法。通过工程实践表明:T梁架设之前,需对T梁进行施工荷载验算,使得验算结果满足规范要求,再进行T梁的架设,以保证施工的安全和桥梁本身的安全性。

This paper mainly introduce a new method for the erection of the large-span highway T-shape girder using gantry crane and bridge-laying machine under the special limited construction condition.An example of engineering practice is presented to demonstrate the fact that： before the erection of the T-shape girder,construction loads checking calculation of the girder should be carried out carefully to make sure that the results of the checking calculation could satisfied the requirements of the relative specification, the spans the T Bridge, to assure the safety of construction and the bridge itself.