GQF-G型桥梁伸缩缝公路桥梁伸缩缝就是为了协调自然因素引起的桥梁端部的转动和纵向位移，例如在气温变化时，桥梁的桥面有膨胀或收缩的纵向变形，车辆荷载也将引起梁端的转动和纵向位移。为使车辆平稳通过桥面并满足桥面变形，所以就需要在桥面上设置一定的伸缩能力的装置。这种产品也称为公路桥梁伸缩缝装置。公路桥梁伸缩缝是桥梁中较为常见的一种；用型钢跟钢筋焊接而成；建筑高度低结构简单,安装方便,具有明显的可靠性,舒适性和耐久性；
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