How to install the steel structure workshop

Steel structure industrial workshop is widely recognized in construction engineering because of its advantages of fast construction speed, light weight, good seismic performance and environmental protection. The installation of steel structure workshop is complex, generally including steel column installation, inter-column support installation, roof truss beam installation, roof and wall installation and roof panel installation. When installing, we should pay attention to these problems, so let's take a look at Bian Xiao. How to install the steel structure workshop

A, the installation of steel column

1. Install the first row of steel columns and the second row of steel columns according to the drawing requirements, and then install the connecting beams between the steel columns.

2. Hoist and install the first steel roof truss and the second steel roof truss with two machines, and then install the purlin between the two roof trusses.

3. According to the drawing requirements, continue to install the steel column, coupling beam, roof truss and purlin of the next rigid frame until all steel columns are installed.

Second, the column support installation

Inter-column support and steel column are connected by connecting plate bolts and welding, and the manufacturing and installation deviation of steel column may have a great influence on its installation. After the inter-column support is assembled in the factory, it will be transported to the site for installation. During installation, it is divided into three units 1, 2 and 3 for hoisting respectively. The three units are all plane truss structures, and the hoisting is integral hoisting. During installation, first install 3, then use chain block to pull it to the steel column for temporary fixation, then install 1, the node connecting 3 and 1, dismantle the chain block, and finally install 2. At 4 o'clock, the three single trusses hoisted as a whole will be hoisted with a 25T truck crane.

Third, the installation of roof truss beam

1, the longest steel frame is 56 meters long. In order to prevent the deformation of the long steel frame in the process of hoisting, the method of double-machine lifting and four-point lifting is adopted for the hoisting of the long members. When lifting at four o'clock, the stress at four o'clock shall be synchronized, and the spacing between lifting points shall be ensured to be about 6m, so that the stress on the steel frame will be uniform during the lifting process, and the design size will be maintained during the lifting process, which meets the specification requirements.

2. When hoisting the roof truss steel beam, connect an inverted chain in series on the wire rope to adjust the posture of the steel beam in the air. After the roof steel beams are hoisted in place, the relevant roof steel purlins should be connected first, and then the hooks should be released to form a stable space frame structure. If the roof steel purlin cannot be installed before the hook is released, the cable wind rope should be pulled to prevent the roof truss steel beam from being twisted. Before hoisting, the cable wind rope is fixed on the roof truss steel beam, and there are four * * * cables, which are set according to 1/3 of the length of the steel beam and set at the foot of the steel column near the bottom. The wind rope of the cable shall be Ф13.5 mm, and tightened with 1T chain block. After the connecting beam between the main steel beams on the roof is installed, the cable wind rope can be removed.

Four, roof and wall installation

1. Hoist the firmly bound purlin to the installation site with the site crane, and install it according to the drawing requirements. Pay attention to determine whether the height difference of each purlin anchor point needs to be adjusted. If adjustment is needed, use the steel plate with the required adjustment amount to make adjustment.

2. According to the purlin spacing and axis, determine the intersection line of purlin and steel structure beam (the positioning line of pay-off pop-up), which is the installation line of purlin tray, and weld purlin to steel structure beam and bracket.

3. After welding, the weld seam and its surroundings should be treated with anti-corrosion, and the anti-corrosion material should be paint that meets the design requirements, requiring two layers. Remove the coating and dirt on the weld surface before anticorrosion.

4. After purlin installation is completed, start to install the gutter. Before the sink is docked, polish the cutting mouth clean. When docking, pay attention to the joint gap not exceeding 1 mm, and spot weld every 10cm before welding. In order to speed up the installation of the gutter, two or three sections of gutter can be spliced into a whole on the ground, and then hoisted to the installation position or nearby position by 16 ton crane, which can not only improve the docking quality of gutter, but also greatly improve the working efficiency.

5. After the purlin and gutter are installed, the profiled steel plate can be installed. First, determine the installation starting point, according to the design drawings and site conditions. After determining the installation direction, pop up the baseline, and then install it block by block from one end to the other.

Verb (abbreviation of verb) Installation of roof slab

1, set out to locate the initial baseline of the first roof panel, and determine the installation control line of the roof plug and both sides of the roof plug along the installation direction.

2. Install the roof plug plate, the contact part between the plug plate and the pressure plate shall be painted with waterproof glue, and then installed. The plug shall be sealed with waterproof glue to prevent leakage, and the subsequent plugs shall be installed in turn.

3. Install the first roof panel according to the initial datum line and control line for adjustment and positioning, measure and draw the positioning plate of bending water deflector on the roof panel, cut the mouth with scissors, fix the roof panel on the pressure plate with specified rivets, seal the fixing piece with waterproof glue, and bend the water deflector according to the drawn bending positioning line.

What should be paid attention to in the installation of steel structure workshop

1, the steel column is heavy and long, so it cannot be manufactured and transported at one time. Steel columns are fabricated in sections, assembled on site as a whole, and then hoisted. It is suggested that the steel column be divided into two sections. The steel column is transported to the site in two stages: the lower grid part and the upper H-shaped steel column.

2. The hoisting adopts single-machine rotary hoisting. Before lifting, put wood square on the steel column baseboard to avoid damaging the steel column baseboard during lifting. When lifting the steel column, the crane should hook and rotate the boom to make the steel column vertically off the ground and put the steel column into the cup mouth.