钢结构制作安装常见问题之安装质量问题发布时间：2015-11-16 9:51:14 浏览次数:635
One, high strength bolt installation, there are some problems: lack of syrup, and even the following nut bolts did not tighten, torsional shear type; but no club head big six angle head screw final twist mark; installation, friction surface protection paper, high strength bolts for temporary fixed with 48 hours after the installation is not paint bucket; also the torque and axial force test, fastening torque is not calculated; friction coefficient test have nothing to do, some only one group. Tie rod bolt is not filled, the load is not straight waist hole with big nut and washer mother on the interface is too small, it is easy to punch.
Second, steel column installation in violation of operation rules, like a candle as the root of a single in the day and the formation of stable framework unit. Due to high winds would collapse. This kind of safety accident, absolutely avoid.
Three, color plate retaining the seam is not dense, ending the "bad" nose also blocked the leakage effect and beautiful rain.
Four, the unit does not have the installation process, the installation of components without sequence. If an exhibition hall construction area of 6000 square meters, a total of four layers. The installation member has been restored to normal, but still with the main steel column for fixed. But the edge of the auxiliary small steel column has been welded. After the installation of steel columns with welded steel columns must be smooth, as soon as possible at the bottom, and the abandoned. But some live color board has begun installing column is not closed.
Five, detailed drawings in the installation quality. If the design drawings are not indicated on the crane beam flange, the construction unit is not submitted to the final installation of the welding, the crane beam under the mandatory provisions of the relevant crane beams are not allowed to yield.
Six, fixed bolts with different height of column plane prediction, embedded displacement, pile deflection measurement, must first ask.
Seven, the welding line is common. If the rigid connection backing weld spacing is too small to welding results, determine hand slipped away; liner board specifications do not meet the requirements, even with a bar to replace; 'forming, uneven width, began, the overlap is not yet clear, bite of meat, the stomata; fox fox brush head lead plate lights, depression and so on.