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桥梁伸缩装置是为使车辆平稳通过桥面并满足桥面变形的需要,在桥面伸缩接缝所设置的各种装置的总称。伸缩装置应能满足梁体的自由伸缩,并要求具有较好的耐久性、行驶的舒适性、良好的防水性及施工的方便性,且维修简便、价格合理“在桥梁结构中,伸缩装置要适应梁的温度变化,混凝土的徐变及收缩引起的伸缩,梁端的旋转,梁的挠度等因
Bridge expansion device is to make the vehicle smoothly through the deck and to meet the needs of deck deformation, expansion joints in the deck of the various devices installed in the general term. Telescopic device should be able to meet the free expansion of the beam, and requires better durability, driving comfort, good water resistance and ease of construction, and easy maintenance, the price is reasonable. ”In the bridge structure, telescopic device To adapt to temperature changes in the beam, concrete creep and shrinkage caused by telescopic, beam end of the rotation, the beam deflection and other factors