FM/FD/CD型伸缩缝:
FM/FD/CD type expansion joint:
FM-80桥梁伸缩缝、FD-80桥梁伸缩缝、CD-60型桥梁伸缩缝
FM-80 bridge expansion joint, FD-80 bridge expansion joint, CD-60 type bridge expansion joint
对于各种公路桥梁伸缩缝宽度计算方法是怎样的?一般来说对于四季的温变变化是影响桥梁伸缩缝伸缩量的主要原因之一.比如:对于60、80、160型桥梁伸缩缝宽度计算方法及安装，主要根据当地温度变化范围和安装支座时的温度来计算伸缩量(△Lt)、混凝土的徐变、收缩的缩短量；其它次要因素是用一定的安全值在构造上给以考虑，同时还应算出由于因工时，温度变化的修正量。
What is the various calculation methods of highway bridge expansion joint width? Generally speaking for the four seasons temperature change is one of the main reasons affecting the bridge expansion joint extension. For example: for 60, 80, 160 type of bridge expansion joint width calculation method and installation, mainly according to the range of local temperature and the temperature of bearing installation calculation of the expansion amount (delta Lt), shrinkage of concrete creep and shortening; other secondary factors are considered in the structure of a given security value, should also be calculated due to time correction of temperature change.
如果是GQF型60、80型桥梁伸缩缝，是采用热轧整体成型的异型钢材设计，适用于伸缩量80mm以下的的桥梁使用。我们知道：桥梁伸缩缝不论在大中桥和小桥上都是桥梁构造上不可缺少的部分，它在桥梁结构中，要适应梁的温度变化，混凝土的徐变及收缩引起的收缩量，梁端的旋转、梁的挠度等因素引起的接缝变化，它直接承受车轮的反复荷载，它是桥梁最薄弱的环节，因此是最易于损坏的部分，所以对伸缩缝的施工工艺要严格控制。
If it is GQF type 60 and 80 type bridge expansion joint, is the use of hot rolled into the overall shape of special-shaped steel design, applicable to the expansion of less than 80mm of the bridge. We know: the bridge expansion joint in large bridge and the bridge is an indispensable part of the bridge structure, it is in the bridge structure, to adapt to the change of temperature of beam, shrinkage creep and shrinkage of concrete caused by the joints caused by the change of Liang Duan rotation, beam deflection and other factors, it is directly under the cyclic loading the wheel, it is the weakest part of the bridge, which is the most easily damaged parts, so the construction process of the expansion joint should be strictly controlled.
对于FM-80桥梁伸缩缝、FD-80桥梁伸缩缝、CD-60型桥梁伸缩缝由交通部公路规划设计院研制，以上三种伸缩装置是由热轧F型钢、C型钢、橡胶密封带和锚固系统组成。有关详细资料请向我厂进行家索取。它吸收消化了所引进的欧洲先进技术桥梁伸缩缝生产技术，适用于我国现行行业标准所规定重载高密度交通的各类桥梁。
For the FM-80 bridge expansion joints, expansion joints, FD-80 bridge type CD-60 bridge expansion joint is developed by the Ministry of Transportation Institute of highway design and planning, more than three kinds of expansion device is composed of hot rolled F steel, C steel, rubber sealing belt and anchor system. For more details, please make a claim at our factory. It absorbs and imports the imported European advanced technology bridge expansion joint production technology, and applies to all kinds of bridges with heavy load and high density transportation according to the current industry standard.
CD-60型桥梁伸缩缝产品特点有哪些：
What are the characteristics of CD-60 expansion joints?:
此种伸缩装置具有标准位移量：水平为0-60（mm）,垂直为±10mm，伸缩灵活。其它特点同FD-80型。伸缩缝的标准位移量：水平为0-80（mm）,垂直为±15mm，伸缩灵活。本产品采用浅预锚固体系，只需梁端头厚度（包括铺装层）超过240mm。（FM-80FD-80型厚度为200mm）。由于F型钢型腔尺寸稳定，胶带与型腔密贴，具有可靠的密封性能。使用寿命长，在正常维护下可达到与桥梁等寿命的效果。造价低，安装方便的特点。近年来，我们发现一些桥梁伸缩缝装置破坏的原因多数与锚固系统有关，锚固系统薄弱，本身就容易破坏，在车辆的反复冲击下，会导致伸缩装置的过早破坏，因此伸缩装置的锚固系统相当重要。
The telescopic device has a standard displacement quantity: the horizontal is 0-60 (mm), the vertical is + 10mm, and the expansion is flexible. Other features are similar to type FD-80. Standard displacement of expansion joint: horizontal is 0-80 (mm), vertical is + 15mm, flexible and flexible. This product adopts the shallow pre anchorage system, and only the thickness of the end of the beam (including pavement) exceeds 240mm. (FM-80FD-80 thickness is 200mm). Owing to the stable size of F type steel, the adhesive tape and cavity are closely bonded and have a reliable sealing performance. Long service life, under normal maintenance, can achieve the effect of bridge and other life. The utility model has the advantages of low cost and convenient installation. In recent years, we found some reasons of bridge expansion joint device destroyed most of the anchorage system, the anchorage system is weak, easily damaged, in repeated impact vehicles, will lead to premature failure of the expansion device, so the anchorage system of telescopic device is very important.
1.通常我们在进行60、80型伸缩缝施工前要按照设计核对预留槽尺寸，并将预留槽内清扫干净。首先要对需切割的桥面部分弹白色油漆线，以保证开槽缝的整齐、顺直，对于桥面系统伸缩位置两侧路面变形部分，要适当加宽切除宽度，以保证混凝土与沥青混凝土接头部分平整，另外，在切割时注意对路面的保护，做到不污染、不破坏为止。预埋锚固筋若不符合设计要求，必须首先处理，满足设计要求后方可安装伸缩缝。
1. usually we carry on 60, 80 type expansion joints before construction, according to the design to check the reserved groove size, and clean the reserved groove. First of all to be cut the deck part white paint line, to ensure that the slotted seam neatly, straight, for bridge deck system expansion position of both sides of the road deformation, due to the widening resection width, so as to ensure the concrete and asphalt concrete joint part is smooth, in addition, pay attention to the protection of the pavement in the cut, do not pollute so far, no damage. If the embedded anchor bars do not meet the design requirements, they must be dealt with first, and the expansion joints can be installed before the design requirements are met.
2伸缩缝在安装前应根据实际温度按照图纸设计中的计算公式调整组装定位值，用专用卡具将其固定。在对槽内混凝土及砂袋清理时，注意保护预留槽内钢筋，以防造成缺少钢筋现象
Before installation should be in accordance with the design drawings of the actual temperature calculation formula in the adjustment of assembling and positioning value according to the 2 expansion joint, which is fixed with a special fixture. In the groove of concrete and sand cleaning, pay attention to the protection of the reserved groove steel, to prevent the lack of steel phenomenon
3.安装时伸缩缝中心线与桥梁中心线应重合，并使其顶面标高与设计标高相吻合，并使横坡、纵坡与桥面横坡、纵坡相符。
3. when installation, the expansion joint centerline should coincide with the central line of the bridge, and make the top elevation coincide with the design elevation, and make the horizontal slope and vertical slope correspond to the transverse slope and vertical slope of the bridge deck.
4、正确就位后，然后穿放横向联接水平钢筋，最好将伸缩缝上的锚固钢筋与预埋钢筋在两侧同时焊牢，如有困难，先将一侧焊牢，待达到已确定的安装气温后再将另一侧锚固筋全部焊牢，并放松卡具，使其伸缩自由。
4, the correct position, then wearing a cross connection of horizontal bars, the best will be the anchor bars and joints of steel reinforcement embedded fixedly on both sides at the same time, if there are difficulties, the first side to weld, determined after installation temperature on the other side of the anchor bolt are welded, and release the clamp the expansion of freedom.
5、完成上述工序后，在预留槽口内浇筑混凝土，浇筑混凝土时应采取必要的措施，振捣密实。浇筑时不允许混凝土溅、填在密封橡胶带缝中及表面上，如果发生此现象应立即清除。浇筑完毕后进行养护。
5, after the completion of the above process, pouring concrete in the reserved slot, concrete measures should be taken to vibration compaction. Pouring concrete shall not be allowed to splash and fill in the joint and surface of the sealing rubber band. If this happens, it shall be removed immediately. After the completion of maintenance.
6、待伸缩缝两侧混凝土强度满足设计要求后，方可开放交通。施工方进行对于桥梁伸缩缝应注意：伸缩缝中所用的异型钢外观应光洁、平整，不允许变形扭曲。产品必须在工厂进行组装。组装钢构件应进行有效的防护处理。吊装位置应用明显。
