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. 嚴(yán)重變形

　　1. Serious deformation

　　如果有嚴(yán)重的變形，可能是由于運(yùn)輸過程中摔倒在地上造成的。鋼筋網(wǎng)是將縱向鋼筋和橫向鋼筋按一定距離布置成直角，所有焊接點(diǎn)焊接在一起的鋼筋網(wǎng)。提高施工效率、提高結(jié)構(gòu)質(zhì)量、提高可靠性，改變傳統(tǒng)的施工方法，具有十分重要的意義。鋼筋網(wǎng)的運(yùn)輸是一個(gè)非常重要的環(huán)節(jié)，在運(yùn)輸過程中有很多未知的因素(因素)會(huì)損壞鋼筋網(wǎng)，給鋼筋網(wǎng)的安裝帶來不便。汽車運(yùn)輸,裝船時(shí)相同的大小和類型的代碼應(yīng)該放在一起,和良好的包裝應(yīng)確保穩(wěn)定的鋼網(wǎng)的交通工具,以防止下降等問題,摩擦和劃痕由于不穩(wěn)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.

　　預(yù)防措施:

　　Precautions:

　　1. 鋼筋網(wǎng)承載扁鋼和包覆扁鋼只具有高強(qiáng)度方向的鋼網(wǎng)高度(垂直于鋼網(wǎng)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. 建議使用尼龍?zhí)嵘龓нM(jìn)行升降。如用鋼絲繩吊裝，注意保護(hù)鋼條(鋼條)網(wǎng)緣扁鋼，防止鋼條網(wǎng)緣變形或損壞。

　　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、如使用叉車裝卸，應(yīng)防止叉齒嚴(yán)重撞擊(撞擊)鋼網(wǎng)外的扁鋼。

　　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。負(fù)荷不足和變化

　　II. Under load and change

　　長期使用使鋼網(wǎng)規(guī)格發(fā)生變化，導(dǎo)致結(jié)構(gòu)承載力不足。安裝后出現(xiàn)的重量開焊變形，是廠家生產(chǎn)環(huán)節(jié)出現(xiàn)的問題，虛焊、原材料厚度不達(dá)標(biāo)，包括鋼網(wǎng)設(shè)計(jì)與布置、鋼網(wǎng)生產(chǎn)工藝、鋼網(wǎng)安裝誤差、非法使用與操作等。

　　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.

　　鋼筋網(wǎng)的荷載設(shè)計(jì)要求，如果鋼筋網(wǎng)中有缺口，則鋼筋網(wǎng)的剩余面積應(yīng)能滿足設(shè)計(jì)荷載的要求。鋼筋網(wǎng)的承載要求由設(shè)計(jì)部門和用戶提出，或由設(shè)計(jì)部門和用戶直接選擇鋼筋網(wǎng)的規(guī)格型號。根據(jù)鋼結(jié)構(gòu)(工程結(jié)構(gòu))的計(jì)算原理，對鋼網(wǎng)的荷載、跨度和撓度之間的關(guān)系進(jìn)行了計(jì)算。對于單個(gè)操作平臺，設(shè)計(jì)負(fù)載通常為1。5kn，分布在整個(gè)面積200mm×200mm。維修平臺一般按4kN/m2的荷載分布進(jìn)行設(shè)計(jì)。單人通過鋼筋網(wǎng)通道，其均勻分布的承載能力不小于3。0 kN / m2。雙向鋼筋網(wǎng)通道的承載能力不小于5。0 kN / m2。高密度步行鋼網(wǎng)通道的承載能力不小于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.

　　外部材料腐蝕

　　Corrosion of external materials

　　由于化學(xué)物質(zhì)的腐蝕侵蝕(解釋:指衰變、消失、腐蝕等)和電化學(xué)腐蝕導(dǎo)致的鋼網(wǎng)構(gòu)件截面弱化，故建議采用熱鍍鋅表面處理。鍍鋅后的重量及要求符合GB/T 13912-2002。鋼網(wǎng)表面可以進(jìn)行熱鍍鋅處理，可以提高鋼網(wǎng)的使用壽命，但仍有一些損傷，為了防止鋼網(wǎng)受到損傷，我們需要對鋼網(wǎng)進(jìn)行日常維護(hù)。

　　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.