C、D、F型桥梁伸缩缝都是公路桥梁专用的伸缩装置的一种，它由一组钢质边梁及锚固件组成加一条整长的橡胶密封条组成。在伸缩装置的钢质边梁外侧的锚固件，与梁端预埋钢筋相焊接，浇筑高强度混凝土过渡段后，同梁体连结。 GQF-C型伸缩缝具有连结可靠，与桥面接合平顺，密封止水、伸缩灵活，行车平稳，使用寿命长的特点。适用于伸缩量为40mm ， 60mm 和 80mm 的桥梁。C、D、F型桥梁伸缩缝是国内交通公路规划设计院设计的一种新颖桥梁伸缩装置，产品适用于大流量交通地段的公路、城市桥梁、高架道路与立交工程。
Bridge expansion joint product is a device used in the bridge construction weak parts, in the use of expansion joints to directly withstand the repeated load of the vehicle, in use will be affected by various factors. Therefore, in use, we must pay attention to expansion joints maintenance, to ensure the use of products.
C, D and F bridge expansion joints are one of the special telescopic devices for highway bridges. They are made up of a group of steel side beams and anchors, plus a whole length of rubber sealing strip. The anchor on the outer side of the steel edge beam of the telescopic device is welded with the embedded steel bar at the end of the beam and is connected with the beam body after pouring the transition section of the high-strength concrete. The GQF-C type expansion joint has the c h a racteristics of reliable connection, smooth connection with the bridge deck, sealed water stop, flexible expansion, stable running and long service life. Suitable for expansion of 40mm, 60mm and 80mm bridge. C, D and F bridge expansion joint is a new type of bridge expansion device designed by domestic traffic highway planning and Design Institute. It is suitable for highway, urban bridge, elevated road and interchange project in large traffic volume.