国产一级特黄aa大片在线-国产一级特黄aa大片免费-国产一级视频在线观看-国产一级视频久久-午夜影院免费体验-午夜影院免费入口

Language:CHINESESENGLISH

Home > News > Safety inspection and appraisal of steel structure interlayer load
CONTACT US
  • Address:Pingtang Industrial District, Shipeng Village, Shishan Town, Nanhai District, Foshan City,
  • Phone:0757-81002668/0757-63323396
  • Fax:0757-81196682
  • Contact:Ben Zheng/13826981293 Kerry Lu/13751224830
  • E-mail:sbs@sbsprefabhouse.com
  • URL:http://www.lhp8.cn

Safety inspection and appraisal of steel structure interlayer load

Time:[2022-10-22]  Hits:1853

The construction of steel structures is different from the construction of ordinary reinforced concrete, and the requirements for stability are higher. According to incomplete statistics, there are 9 steel structures out of 10 buildings in the past decade in which there have been structural safety incidents. It can be seen that the incidence of incidents in steel structure construction is very high. The root of the problem is that the steel structure construction has light weight, large span, weak wind resistance and lateral displacement resistance, and high requirements for stability, while the domestic construction technology is uneven, They often carry out blind construction and take risks to copy the construction experience of reinforced concrete into the steel structure, resulting in skew, excessive deformation and even collapse. Therefore, the construction of steel structure shall be strictly required, constructed according to the plan, and inspected by a professional testing company throughout the process


3. Check and judge the appearance damage of the steel members of the house, such as cracks, damage, coating peeling, steel corrosion, node damage, welding appearance defects, connection and fastening.


4. Magnetic particle testing or penetrant testing shall be selected according to national standards to determine the surface quality of steel members.


5. Some steel roof trusses and steel structural members shall be selected according to relevant national testing and inspection standards, and ultrasonic or magnetic particle testing shall be used for weld testing to determine whether there are defects such as pores, slag inclusions, crater cracks, arc scratches, etc.


6. Axial force meter and torque wrench are selected to detect and judge the torque coefficient of high-strength bolts at the joint of steel structure bolts.


7. The electronic theodolite is selected to measure the straightness of the vertical components of the house, and analyze whether the house presents tilt, deformation and uneven settlement. The specific inspection quantity is confirmed according to the actual situation on site and relevant standards.


8. The total station or pull wire method shall be used to detect and judge the deflection and deformation of roof truss, truss and its members.


9. Vernier caliper and micrometer shall be selected for section steel members to detect and judge the thickness of steel.


10. The ultrasonic thickness gauge shall be selected for the pipe steel members to inspect and judge the wall thickness of the pipe.


11. The surface hardness method is selected to test and judge the strength of steel.


12. The coating thickness gauge is selected to detect and judge the thickness of anti-corrosion or fireproof coating of steel members.


13. Magnetic particle flaw detection shall be carried out for the bolt ball of the grid structure according to the national standard.


14. According to the actual on-site testing data and planning requirements, according to the Load Standard for Building Structures (GB50009-2012) and the relevant national standards for building structure planning, the bearing capacity of the upper structure of the house is checked to assess whether the current bearing capacity of the house can meet the national standard requirements and the requirements for safe use in the future.

Copyright:佛山市勝邦鋼結(jié)構(gòu)有限公司 Foshan Shengbang Steel Structure Co., Ltd. Record Number:粵ICP備13078463號(hào)
主站蜘蛛池模板: julia ann与黑人 | 一级毛片看一个 | 久久婷婷午夜综合色啪 | 成人一区视频 | 欧美精品免费在线 | 一区二区免费视频观看 | 日本在线观看免费高清 | 日韩欧美国产在线看二区 | 在游泳时被陌生人进入小说 | 青草社区在线 | 中文字幕色婷婷在线视频 | 欧美午夜精品一区二区三区 | 明星全黄h床戏小说 | 大尺度np女主有奶 | 琼明神女录在线 | 欧美视频二区 | 天天射天天操天天 | 久久久香蕉 | 扒开美女下面粉嫩粉嫩冒白浆 | 日韩第一页在线观看 | 色综合天天综一个色天天综合网 | 久草网在线 | 一个人的视频www片免费 | 天天躁夜夜躁很很躁 | 天天综合天天看夜夜添狠狠玩 | 亚洲第一天堂无码专区 | 四虎影院海外永久 | 日操夜干| 扒开腿露出尿口扒开来摸 | 亚洲人成影网站~色 | 久久精品久久精品久久精品 | 最好韩国日本高清免费 | 欧美一级片在线播放 | 渣男扒开美女的胸罩狂摸 | 天天色一色 | 最新91网址 | 久久国产精品99久久久久久老狼 | 在线播放国产一区二区三区 | 青青青国产免费 | 亚洲国产日韩综合久久精品 | 青草视频青年娱乐 |