1. Control of bolt installation quality.

在膜结构工程中，螺栓连接一般采用强度螺栓和普通螺栓。普通螺栓连接时，每个螺栓的垫片不得大于2个。螺栓孔不能通过气割进行铰孔。螺栓拧紧后，外露螺纹不得少于2节；

In membrane structure engineering, bolted connections generally use strength bolts and ordinary bolts. When connecting with ordinary bolts, the number of gaskets for each bolt should not exceed 2. Bolt holes cannot be reamed through gas cutting. After tightening the bolts, the exposed threads shall not be less than 2 sections;

螺栓使用前，应检查螺栓证书和复验表。安装时，板叠接触面应平整，接触面应大于75%，边缘间隙不大于0.8mm。螺栓应能自由穿入，无敲击和铰孔。这些螺栓不能用作临时安装螺栓。螺栓应朝一个方向拧紧，当天安装的螺栓应末后拧紧，末后拧紧后逐个检查。

Before using bolts, the bolt certificate and retest form should be checked. During installation, the contact surface of the stack should be flat, the contact surface should be greater than 75%, and the edge gap should not exceed 0.8mm. The bolts should be able to penetrate freely without knocking or reaming. These bolts cannot be used as temporary installation bolts. The bolts should be tightened in one direction, and the bolts installed on the same day should be tightened last, and checked one by one after the last tightening.

2、涂刷工序的质量控制。

2. Quality control of the painting process.

在膜结构车棚施工时，钢结构涂装前涂装的构件表面应无焊渣、油污、水、毛刺等异物。涂漆次数和厚度应符合相关设计要求。

During the construction of membrane structure car sheds, the surface of the painted components before the steel structure coating should be free of foreign objects such as welding slag, oil stains, water, burrs, etc. The number of times and thickness of painting should comply with relevant design requirements.

3、焊接质量控制。

3. Welding quality control.

钢结构焊接前，应检查焊条合格证，按设计要求选用焊条，并按手册和操作规程要求使用焊条。焊缝表面不得有裂纹和焊瘤，一、二次焊缝不得有气孔、夹渣和弧坑裂纹，一次焊缝不得有咬边未焊透，其他缺陷二级焊缝按规定进行无损检测，并在规定的焊缝和位置检查焊工钢印。不合格焊缝不得擅自处理。同一部位的焊缝应确定在修改工艺后进行处理，返修次数不得大于两次。

Before welding the steel structure, the welding rod certificate should be checked, the welding rod should be selected according to the design requirements, and the welding rod should be used according to the manual and operating procedures. The surface of the weld seam shall be free from cracks and weld nodules. The primary and secondary welds shall not have pores, slag inclusions, or arc crater cracks. The primary weld seam shall not have undercuts or incomplete penetration. Other defects shall be subject to non-destructive testing for secondary welds according to regulations, and the welder's steel seal shall be inspected at the specified weld seam and position. Unqualified welds shall not be processed without authorization. Welds in the same part should be treated after modifying the process, and the number of repairs should not exceed two.

4、压型钢板安装的质量控制。

4. Quality control of installation of profiled steel plates.

进场后应检查外观和合格证，并复核与压型钢板施工安装有关的钢构件的安装精度；檩条安装时，应清理焊缝的涂层和飞溅物，并用防腐层进行防腐处理。安装彩板时，应按墙面布置，从一端夹住彩板，然后在墙板接缝处用螺钉进行防水处理。

After entering the site, the appearance and certificate of conformity should be checked, and the installation accuracy of steel components related to the construction and installation of profiled steel plates should be rechecked; When installing purlins, the coating and splashes on the welds should be cleaned, and anti-corrosion treatment should be carried out with a anti-corrosion layer. When installing color panels, they should be arranged according to the wall surface, clamped at one end, and then waterproof treated with screws at the joints of the wall panels.

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