C型桥梁伸缩缝40/60/80

C型桥梁伸缩缝40/60/80
伸缩量计算                 
选择伸缩量范围时，应考虑下列因素：           
1、温度变化影响；               
2、混凝土桥梁的干燥收缩和徐变影响；           
3、由于恒、载产生的梁端转动位移影响；           
4、由于制动力引起的支座位移影响；             
5、由于纵坡大而引起的桥梁活动端垂直变位影响；         
6、斜桥和弯桥的接缝方向变位影响；             
7、其它可能出现因素影响，如收缩装置安装施工误差、加工产生的误差、安装后的预加应力及预应力损失等影响。                               
上述各种因素影响，要都准确计算出伸缩量，目前还是比较困难的事情。所以，设计中应留有足够的余量是比较合理的。               
伸缩装置伸缩量计算确定后，直接影响对伸缩装置尺寸选择，若伸缩装置尺寸选择不合理，将直接影响伸缩装置使用效果，同时选择伸缩装置尺寸时还应考虑梁、板间伸缩缝间隙量大小，以保证伸缩装置与梁、板两端有充分锚固，达到较佳使用效果。因此，在选择伸缩装置时，一定要留有足够余量才能保证伸缩装置使用效果和耐久性。
伸缩装置的运输、存放与安装
Transport, storage and installation of telescopic devices
（注：需要使用伸缩缝主要是为了防止温度的变化引起路面结构的热胀冷缩过大而造成破坏.现在为了减少地震危害，伸缩缝也起到防止梁体位移过大的作用。）
(Note: The use of expansion joints is mainly to prevent the temperature from changing and causing damage to the thermal expansion and contraction of the pavement structure. Now, in order to reduce the earthquake hazard, the expansion joints also prevent the displacement of the beam body from being excessive.)
1、运输
transport
伸缩装置按设计要求全部组装好后，由生产厂家或用户运往施工现场。
After the telescopic device is assembled according to the design requirements, it will be transported to the construction site by the manufacturer or user.
如果其长度**过运输允许限度或由于其他原因不能整体运输时，可以采用分段制作的方法。
A segmented method can be used if its length exceeds the transport allowable limit or cannot be transported as a whole for other reasons.
2、存放
Storage
伸缩装置运抵施工现场后，其存放地点应尽量接近安装位置，并应放置在较少**地面30cm的支撑物上。
After the telescopic device arrives at the construction site, its storage location should be as close as possible to the installation location and should be placed on a support at least 30 cm above the ground.
3、安装
installation
同样优良的伸缩装置，不同的安装质量，使用效果和耐久性会有明显差别。
The same excellent telescopic device, different installation quality, use effect and durability will have significant differences.
这在我们调查研究中反映出的问题充分说明了伸缩装置施工安装质量是保证伸缩装置使用效果好坏的最后一个关键环节。
The problems reflected in our investigation and study fully demonstrate that the construction and installation quality of the telescopic device is the last key link to ensure the use of the telescopic device.
（1）伸缩装置的安装应尽量在路面铺装好后进行，在伸缩装置安装前，须对预留槽的宽度，深度及预埋钢筋进行检查，使之符合安装伸缩装置的要求。
The installation of the telescopic device should be carried out as soon as possible after the pavement is installed. Before the installation of the telescopic device, the width, depth and pre-embedded steel bars of the reserved trough should be inspected to meet the requirements for installing the telescopic device.
（2）清理槽口，必须把所有污物、尘土及其他不需要的东西全部予以清除。
To clean the notches, all dirt, dust, and other unwanted things must be removed.
（3）检查伸缩装置各梁之间间隙符合温度要求，如不符合必须在制造厂工程技术人员的指导下进行调整，使伸缩装置的各梁之间间隙符合设计要求，调整之后再按上夹具，以备安装。
Check the gap between the beams of the telescopic device to meet the temperature requirements. If it is not met, it must be adjusted under the guidance of the engineering and technical personnel of the manufacturer, so that the gap between the beams of the telescopic device meets the design requirements, and then press the upper clamp after adjustment. installation.
（4）以两侧的沥青路面为标高，用起重设备将伸缩装置放在槽口内，调整伸缩装置使其**面与路面标高相同，其纵坡、横坡应与桥梁路面相符。
Take the asphalt pavement on both sides as the elevation, use the lifting equipment to place the telescopic device in the slot, adjust the telescopic device so that the top surface is the same as the road surface elevation, and the longitudinal slope and cross slope should be consistent with the bridge pavement.
（5）检查伸缩装置的位置，使伸缩装置在垂直缝的方向和顺缝方向的位置都符合设计要求，
Check the position of the telescopic device so that the position of the telescopic device in the direction of the vertical slit and the direction of the slit meet the design requirements.
如果此时个别预埋钢筋对伸缩装置的正确安装有妨碍，可以用气割割掉。
If the individual pre-embedded steel bars interfere with the correct installation of the telescopic device at this time, they can be cut by gas.
（6）伸缩装置正确就位后，先将伸缩装置一侧的锚固筋与预留槽的预埋钢筋相连并焊接，
After the telescopic device is properly seated, the anchoring rib on one side of the telescopic device is connected to the pre-embedded reinforcing bar of the reserved groove and welded.
焊接时可以间隔一个焊一个，然后再将另一侧的锚固钢筋按上述步骤焊接。
One weld can be welded one at a time, and then the anchor steel bars on the other side are welded as described above.
当伸缩装置确认固定好后，夹具便可以取下，然后将其余的未焊锚固钢筋与预埋钢筋完全焊接，使伸缩装置可靠锚固。
When the telescopic device is confirmed to be fixed, the clamp can be removed, and then the remaining unwelded anchored steel bars are completely welded with the pre-embedded steel bars to securely anchor the telescopic device.
注意：严禁在伸缩装置中梁、边梁上任意施焊。
Note: It is strictly forbidden to apply any welding on the beam and side beam in the telescopic device.
（7）伸缩装置如果是分段安装的，接缝处必须采用焊接。型钢的焊接接头在制造工厂已经备好，当两相临缝对正后，即可安装。
If the telescopic device is installed in sections, the joint must be welded. The welded joints of the section steel are already prepared at the manufacturing plant, and can be installed when the two phases are aligned.
每根梁全部焊接好后再按上述步骤进行锚固。
After each beam is welded, it is anchored according to the above steps.
（8）在梁端安装模板，模板按伸缩装置外形尺寸和预留槽的缺口进行制作，模板应做的相当严密以防砂浆流进位移控制箱或流进梁端缝隙。
The template is installed at the beam end, and the template is made according to the outer dimensions of the telescopic device and the gap of the reserved groove. The template should be made very tight to prevent the mortar from flowing into the displacement control box or into the gap of the beam end.
（9）检查安装的模板严密无缝以后再将预留槽清洗干净，便可浇注混凝土，并振捣密实。
After checking that the installed template is tight and seamless, the reserved tank can be cleaned and concrete can be poured and vibrated.
混凝土至少与该处的结构混凝土具有同一强度，浇注混凝土时要保持伸缩装置的清洁。
The concrete has at least the same strength as the structural concrete there, and the concrete is kept clean when pouring concrete.