cb300*6-30橡胶止水带=地铁专用
桥梁伸缩缝的作用:在于调节由车辆荷载和桥梁建筑材料所引起的上部结构之间的位移和联结。斜交桥的伸缩装置一旦被破坏，将严重影响行车的速度、舒适性与安全，甚至造成行车安全事故。
The function of bridge expansion joint is to adjust the displacement and connection between the superstructure caused by the vehicle load and the bridge building material. Once the telescopic device of the skew bridge is destroyed, it will seriously affect the speed, comfort and safety of the vehicle, and even cause safety accidents.伸缩缝按照性能及安装方法可以分为：GQF-C型、GQF-Z型、GQF-L型、GQF-F型。
According to the performance and installation method, the expansion joint can be pided into GQF-C, GQF-Z, GQF-L and GQF-F.
其中GQF-MZL型数模式桥梁伸缩缝装置，是采用热轧整体成型的异型钢材设计的桥梁伸缩缝装置。GQF-C型、GQF-Z型、GQF-L型、GQF-F型伸缩缝装置适用于伸缩量80mm以下的的桥梁接缝，GQF-MZL型伸缩缝装置是由边梁、中梁、横梁和连动机构组成的模数式桥梁伸缩缝装置，适用于伸缩量80mm-1200mm的大中跨度桥梁。
cb300*6-30橡胶止水带=地铁专用
The GQF-MZL model number mode bridge expansion joint device is a bridge expansion joint device designed by the hot rolled integral shaped steel. GQF-C type, GQF-Z type, GQF-L type, GQF-F type jointless bridge joint device is suitable for the expansion of the following 80mm, GQF-MZL type expansion joint device is composed of modular bridge expansion edge beam, beam, beam and linkage mechanism joint device, suitable for large and medium span bridge expansion 80mm-1200mm.GQF—MZL型伸缩装置的突出特点是将伸缩装置的承重结构和位移控制系统分开，二者受力时互不干扰，分工明确，这样既保证受力时安全，又保证了受力时位移均匀。
The prominent feature of the GQF MZL expansion device is to separate the load bearing structure and the displacement control system of the telescopic device. The two forces are not interfered with each other, and the pision of labor is clear. This ensures the safety of the force while ensuring the even displacement of the load.
桥梁伸缩量计算值直接影响对伸缩装置规格选择，若伸缩装置规格选择不合理，就直接影响伸缩装置的使用效果，同时选择伸缩装置时还应考虑梁、板间伸缩装置间隙量大小，以保证伸缩装置与梁、板两端有充分锚固，才能达到使用效果。所以在选择伸缩装置的规格时，一定要留足够余量，才能保证伸缩装置的使用效果和耐久性。
The value of direct influence on the choice of expansion device specification calculation of bridge expansion volume, if the expansion device specification selection is not reasonable, it directly affects the use effect of expansion device at the same time, expansion device should be taken into consideration when the beam and plate expansion device gap size, to ensure the expansion device has sufficient anchorage and beam, both ends of the board, in order to achieve the use of effect. So when choosing the size of the telescopic device, we must leave enough allowance to ensure the use and durability of the telescopic device.
cb300*6-30橡胶止水带=地铁专用
（5）当桥梁位于坡道上，固定支座一般应设在下坡方向的桥台上；(5) when the bridge is located on the ramp, the fixed support should be located on the abutment in the direction of the downhill.
（6）当桥梁位于平坡上，固定支座宜设在主要行车方向的前端桥台上；
(6) when the bridge is located on the flat slope, the fixed support should be located on the front end abutment of the main driving direction.
（7）固定支座宜设置在具有较大支座反力的地方；
(7) the fixed bearing should be set in a place with large support counterforce.
（8）在同一桥墩上的几个支座应具有相近的转动刚度；
(8) several bearings on the same pier should have similar rotational stiffness;
（9）连续梁可能发生支座沉陷时，应考虑制作高度调整的可能性。
(9) when a continuous beam may sink, the possibility of making a high adjustment should be considered.
