轻钢结构工程中常见的质量事故

Common quality accidents in light steel structure engineering

一、电网工程常见质量事故

1、 Common quality accidents in power grid engineering

(1)钢筋弯曲变形或局部断裂

(1) Bending deformation or local fracture of steel bars

(2)钢筋密封板或锥头焊缝损坏

(2) Damaged reinforcement sealing plate or cone head weld seam

(3)关节变形或断裂

(3) Joint deformation or fracture

(4)焊缝不饱满或有超过规定标准的气泡、夹渣和微裂纹

(4) The weld seam is not full or has bubbles, slag inclusions, and microcracks that exceed the specified standards

(5)高强度螺栓断裂或从球节中拔出

(5) High strength bolt fracture or extraction from ball joint

(6)构件在节点处碰撞，支撑上弦杆支撑时支撑腹杆与支撑结构碰撞

(6) The component collides at the node, and when supporting the upper chord, the supporting web member collides with the supporting structure

(7)承重节点位移

(7) Displacement of load-bearing nodes

(8)格栅挠度过大，超过设计规定的相应设计值的1.15倍

(8) The deflection of the grid is too large, exceeding 1.15 times the corresponding design value specified in the design

二、门式刚架工程常见质量事故

2、 Common quality accidents in portal frame engineering

(1)主要部件的变形和扭曲

(1) Deformation and distortion of main components

(2)预埋件不符合图纸和规范要求，高差和间距超标

(2) The embedded parts do not meet the requirements of the drawings and specifications, and the height difference and spacing exceed the standard

(3)钢架整体垂直度和整体平面弯曲超差，梁柱端板孔位置不对应，尺寸错位

(3) The overall verticality and overall plane bending of the steel frame are out of tolerance, and the positions of the end plate holes of the beams and columns do not correspond, resulting in dimensional misalignment

(4)主要受力节点焊缝不饱满或有超过规定标准的气泡、夹渣和微裂纹

(4) The main load-bearing nodes have incomplete welds or bubbles, slag inclusions, and microcracks that exceed the specified standards

(5)辅助稳定结构，如支架、系杆、膝撑等。处于不合理的位置或处理不正确

(5) Assist in stabilizing structures such as brackets, tie rods, knee braces, etc. Being in an unreasonable position or mishandling

(6)二次元件不符合质量要求

(6) The secondary element does not meet the quality requirements