1. Overview

钢筋焊接网是二十世纪初国外首创一种在工厂中焊接形成的网状钢筋制品。经过近百年的应用与发展，在国外已被建筑界广泛应用，被认为是一种新型、、省时、、强化混凝土结构的建筑用材。

Welded steel mesh is the first steel mesh product welded in factories abroad in the early twentieth century. After nearly a hundred years of application and development, it has been widely used in the construction industry abroad, and is considered as a new, efficient, time-saving, energy-saving, reinforced concrete structure building materials.

它主要用于多层和高层建筑、混凝土公路、机场跑道、隧道、混凝土管、桥梁、水利、电力坝基、码头、仓库、围栏等领域。尤其在美国、德国、日本、新加坡等国早已普遍采用。钢筋焊接网除用来制作钢筋混凝上预制构件外，更多的是用于现浇混凝土结构，大量用于工业与民用建筑的墙板、楼板、屋面板等领域。

It is mainly used in multi-storey and high-rise buildings, concrete highways, Airport runways, tunnels, concrete pipes, bridges, water conservancy, power dam foundations, wharfs, warehouses, fences and other fields. Especially in the United States, Germany, Japan, Singapore and other countries have been widely used. In addition to making prefabricated members on reinforced concrete, welded steel mesh is mostly used in cast-in-place concrete structures, and is widely used in wallboard, floor, roof and other fields of industrial and civil buildings.

2、钢筋焊接网

2. Welded steel mesh

钢筋焊接网是采用普通低碳钢热轧圆盘条或低碳钢无扭控冷热轧盘条为原料，通过冷轧或冷拔减径而成的光面或带肋钢筋。经过矫直定尺切断后按一定的间距组焊成不同规格的钢筋网，如图1、图2所示（略）。一般钢网的纵向钢筋可采用单根或双根钢筋，而横向钢筋只能采用单根钢筋。

Welded steel bar net is a smooth or ribbed steel bar, which is made of common low carbon steel hot-rolled disc rod or low carbon steel non-twist controlled cold-rolled hot-rolled wire rod as raw material and is reduced by cold rolling or cold drawing. After straightening, leveling, leveling and cutting, steel meshes of different specifications are welded at a certain distance, as shown in Fig. 1 and Fig. 2 (abbreviated). Generally, single or double steel bars can be used for longitudinal reinforcement of steel mesh, while single steel bar can only be used for transverse reinforcement.

钢筋焊接网按形状分为定型焊接网和定制焊接网两种，定型焊接网在两个方向上的钢筋间距和直径可以不同，但在一个方向上具有相同的钢筋直径、相同的钢筋间距和相同的钢筋长度，而定制钢筋网的形状尺寸应根据需方要求，由供需双方协商确定。

The welded net of steel bar can be divided into two kinds according to its shape: the welded net of steel bar and the welded net of steel bar. The spacing and diameter of steel bar of the welded net of steel bar can be different in two directions, but in one direction there are the same diameter of steel bar, the same spacing of steel bar and the same length of steel bar. The shape and size of the welded net of steel bar should be determined according to the requirement of the demander through consultation between the supplier and

钢筋焊接网与传统的绑轧钢筋比较具有间距尺寸准确、强度高、刚度好、承载均匀、抗裂性能强、节约钢材、安装速度快、劳动强度小等特点。它是把钢筋的优越性与工厂化的生产进行结合，使材料性能得到更大发挥，同时使钢筋工程由手工操作转为工厂化的生产。据了解天津普济河道立交桥维修工程原设计为直径010．0111lB、间距10mm普通I级钢筋绑轧网，其工程综合费用为152．5万元，而采用焊接钢筋网工程综合费用仅为135．2万元，节约工程造价17万元，节省钢材30％，节约工期90％，节约人工70％。

Compared with the traditional bonded steel bar, the welded steel bar net has the characteristics of accurate spacing size, high strength, good stiffness, uniform load-bearing, strong crack resistance, steel saving, fast installation speed and low labor intensity. It combines the advantages of reinforcing steel bar with the factory production, so that the material properties can be brought into full play, and at the same time, the steel bar engineering can be changed from manual operation to factory production. It is understood that the original design of the maintenance project of Puji River overpass in Tianjin was the ordinary grade I steel bar binding and rolling net with a diameter of 010.0111lB and a spacing of 10mm. The comprehensive cost of the project is 1525,000 yuan, while the comprehensive cost of the project using welded steel bar net is only 1352,000 yuan, which saves the cost of the project by 170,000 yuan, 30% of the steel, 90% of the construction period and 70% of the labor.

3结语

3 conclusion

钢筋焊接网作为一种新型建筑材料；1995年冶金部以YB／T076--95批准发布钢筋混凝土用焊接钢筋网行业标准，1997年建设部以JGJ／T114?97批准发布钢筋焊接网混凝土结构技术规程，1998年建设部把钢筋焊接网列为“九五”计划推广应用的建筑材料及建筑业进一步推广应用的10项新技术之一。以上这些法规为钢筋焊接网的发展提供了广阔的空间，为提高焊接网的质量提供了有力保证。

In 1995, the Ministry of Metallurgy approved the issuance of the industry standard for welded steel mesh for reinforced concrete with YB/T076-95, and in 1997, the Ministry of Construction approved the issuance of the technical regulations for welded steel mesh concrete structures with JGJ/T114?97. In 1998, the Ministry of Construction listed welded steel mesh as the key building materials and construction industry to be popularized in the Ninth Five-Year Plan. One of the 10 new technologies applied. The above regulations provide a broad space for the development of welded steel mesh and provide a strong guarantee for improving the quality of welded steel mesh.