Steel structure industry has been widely used in various fields, the most powerful resistance on the surface of the impact of structural light, beautiful appearance, high strength characteristics, easy to install, steel structure after hot-dip galvanizing (zinc), with 30 years of corrosion-resistant durable paint free maintenance, narrow, in reality, there are many factors that will lead to damage to the steel mesh, we simply analyze and reason.

　　1. 严重变形

　　1. Serious deformation

　　如果有严重的变形，可能是由于运输过程中摔倒在地上造成的。钢筋网是将纵向钢筋和横向钢筋按一定距离布置成直角，所有焊接点焊接在一起的钢筋网。提高施工效率、提高结构质量、提高可靠性，改变传统的施工方法，具有十分重要的意义。钢筋网的运输是一个非常重要的环节，在运输过程中有很多未知的因素(因素)会损坏钢筋网，给钢筋网的安装带来不便。汽车运输,装船时相同的大小和类型的代码应该放在一起,和良好的包装应确保稳定的钢网的交通工具,以防止下降等问题,摩擦和划痕由于不稳定的位置。

　　If there is serious deformation, it may be caused by falling to the ground during transportation. The reinforcing mesh is a kind of reinforcing mesh which arranges the longitudinal reinforcement and the transverse reinforcement into a right angle according to a certain distance and all welding points are welded together. It is of great significance to improve construction efficiency, structural quality, safety and reliability, and to change the traditional construction methods. The transportation of steel fabric is a very important link. In the process of transportation, there are many unknown factors (factors) that will damage the steel fabric and bring inconvenience to the installation of the steel fabric. For automobile transportation, the same size and type of codes shall be put together when loading, and good packaging shall ensure stable steel mesh transportation tools to prevent falling and other problems, friction and scratches due to unstable positions.

　　预防措施:

　　Precautions:

　　1. 钢筋网承载扁钢和包覆扁钢只具有高强度方向的钢网高度(垂直于钢网的平面方向)。

　　1. The bearing flat steel and clad flat steel of the steel mesh only have the height of the steel mesh in the direction of high strength (perpendicular to the plane direction of the steel mesh).

　　2. 建议使用尼龙提升带进行升降。如用钢丝绳吊装，注意保护钢条(钢条)网缘扁钢，防止钢条网缘变形或损坏。

　　2. It is recommended to use nylon lifting belt for lifting. If the steel wire rope is used for hoisting, pay attention to protect the flat steel of the steel bar (steel bar) mesh edge to prevent the permanent deformation or damage of the steel bar mesh edge.

　　3、如使用叉车装卸，应防止叉齿严重撞击(撞击)钢网外的扁钢。

　　3. If the forklift is used for loading and unloading, the fork teeth shall be prevented from seriously impacting (hitting) the flat steel outside the steel mesh.

　　二世。负荷不足和变化

　　II. Under load and change

　　长期使用使钢网规格发生变化，导致结构承载力不足。安装后出现的重量开焊变形，是厂家生产环节出现的问题，虚焊、原材料厚度不达标，包括钢网设计与布置、钢网生产工艺、钢网安装误差、非法使用与操作等。

　　The long-term use makes the steel mesh specification change, resulting in the insufficient bearing capacity of the structure. The weight open welding deformation after installation is a problem in the production link of the manufacturer. The faulty welding and the thickness of raw materials are not up to the standard, including the design and layout of the steel mesh, the production process of the steel mesh, the installation error of the steel mesh, illegal use and operation, etc.

　　钢筋网的荷载设计要求，如果钢筋网中有缺口，则钢筋网的剩余面积应能满足设计荷载的要求。钢筋网的承载要求由设计部门和用户提出，或由设计部门和用户直接选择钢筋网的规格型号。根据钢结构(工程结构)的计算原理，对钢网的荷载、跨度和挠度之间的关系进行了计算。对于单个操作平台，设计负载通常为1。5kn，分布在整个面积200mm×200mm。维修平台一般按4kN/m2的荷载分布进行设计。单人通过钢筋网通道，其均匀分布的承载能力不小于3。0 kN / m2。双向钢筋网通道的承载能力不小于5。0 kN / m2。高密度步行钢网通道的承载能力不小于7。5 kN / m2。

　　If there is a gap in the reinforcement net, the remaining area of the reinforcement net shall meet the requirements of the design load. The bearing requirements of the reinforcing mesh shall be proposed by the design department and the user, or the design department and the user shall directly select the specifications and models of the reinforcing mesh. According to the calculation principle of steel structure, the relationship among load, span and deflection of steel network is calculated. For a single operating platform, the design load is usually 1. 5kn, distributed in the whole area of 200mm × 200mm. The maintenance platform is generally designed according to the load distribution of 4kn / m2. The bearing capacity of single person passing through the reinforced mesh channel shall be no less than 3. 0 kN / m2. The bearing capacity of two-way reinforced mesh channel shall not be less than 5. 0 kN / m2. The bearing capacity of high-density pedestrian steel mesh channel shall not be less than 7. 5 kN / m2.

　　外部材料腐蚀

　　Corrosion of external materials

　　由于化学物质的腐蚀侵蚀(解释:指衰变、消失、腐蚀等)和电化学腐蚀导致的钢网构件截面弱化，故建议采用热镀锌表面处理。镀锌后的重量及要求符合GB/T 13912-2002。钢网表面可以进行热镀锌处理，可以提高钢网的使用寿命，但仍有一些损伤，为了防止钢网受到损伤，我们需要对钢网进行日常维护。

　　Due to the corrosion of chemical substances (Interpretation: decay, disappearance, corrosion, etc.) and the weakening of steel mesh section caused by electrochemical corrosion, it is recommended to adopt hot-dip galvanizing surface treatment. The weight and requirements after galvanizing shall conform to GB / T 13912-2002. The surface of the steel mesh can be hot-dip galvanized, which can improve the service life of the steel mesh, but there are still some damages. In order to prevent the damage of the steel mesh, we need to carry out daily maintenance of the steel mesh.