LF-BJMB
Analysis on Key Points of Steel Structure Engineering Reinforcement Technology

Analysis on Key Points of Steel Structure Engineering Reinforcement Technology

Change steel structure calculation graphic reinforcement method
The method of reinforcing the structure by adding measures such as changing the load distribution condition, the force transmission path, the node property and the boundary condition, adding additional bars and supports, applying prestressing, and considering spatial cooperation work. The general method of changing the structure calculation graph is:
(1) Increase the support to form the spatial structure and check according to the spatial structure, add support to increase the structural stiffness or adjust the natural vibration frequency of the structure to improve the structural bearing capacity and improve the structural dynamic characteristics;
(2) Adding support or auxiliary rods to reduce the slenderness ratio of the structure to improve its stability;
(3) In the frame structure, the rigidity of a column is emphasized to be vo to most horizontal forces to reduce the load of other columns.



Additional fulcrum reinforcement
After the beam and the plate are added with fulcrums in the span, the span is reduced, so that the bearing capacity can be greatly increased, and the flexural deformation of the beam and the plate can be reduced and restricted. It is suitable for the reinforcement of horizontal structures such as beams, slabs, trusses and grids in large-span structures with unrestricted house clearance. The advantage is that it is simple and reliable, and the disadvantage is that the use space will be affected.
Bonded outer steel reinforcement
The outer steel reinforcement reinforced concrete beam generally adopts the wet outsourcing method, that is, the reinforced epoxy resin grouting method is used to bond the steel section and the reinforced member into a whole body, and the reinforced component has a large increase in the cross-sectional area of the tensioned and pressed steel. Therefore, the normal section bearing capacity and section stiffness are also greatly improved.



Adhesive fiber reinforced plastic reinforcement
In addition to the similar advantages of the bonded outer steel reinforcement method, the reinforced fiber reinforced plastic reinforcement method has the advantages of resistance to turbidity, moisture resistance, almost no increase in structural weight, durability, low maintenance cost, etc., but requires special fire treatment. Suitable for concrete structural members and general structures of various stress properties.
After the reinforcement project is completed, apply a small hammer to gently tap the plate to judge the bonding effect from the sound or use the ultrasonic method to detect the bonding density. If the area of the anchoring area is less than 90%, and the area of the non-anchor area is less than 70%, the paste is invalid and should be peeled off and re-applied.
For major projects, in order to test the reinforcement effect, the load test shall be carried out by sampling. Generally, only the standard load test is used. The load to be unloaded is added all over again, and the deformation and crack development of the structure shall meet the design and use requirements.

Prestressed steel structure technology
Bolting is required to open holes in the base metal near the damaged part, weakening the section and forming a new stress concentration zone; ordinary bolts are easy to loose under dynamic load, and high-strength bolts are prone to stress relaxation, which reduces the repair effect of the structure.  The bonded steel reinforcement technology is to use a special structural structural adhesive to adhere the steel plate on the surface of the steel structure, and rely on the structural adhesive to bond it together to work together to improve the structural bearing capacity. The disadvantage is that the weight of the structure is increased a lot, the steel plate is not easy to be formed into various complicated shapes, transportation and installation are not convenient, and the steel plate is easy to rust, affecting the bonding strength and high maintenance cost.


Related News
  • Environmentalists Sue Trump Over Coal Pollution Ahead Of State Of The Union

    Environmentalists Sue Trump Over Coal Pollution Ahead Of State Of The Union

    February 2, 2018An environmental group sued the Trump administration for delaying regulations on coal power plant pollution just ahead of the president's State of the Union address Tuesday during which Trump plans to...view
  • China, Mozambique vow to expand cooperation

    China, Mozambique vow to expand cooperation

    November 20, 2017The pledge came as top political advisor Yu Zhengsheng met with Speaker of the Mozambique Parliament Veronica Macamo, who was heading a delegation of business people on a five-day visit to China.Haili...view
  • Coal fired power plant

    Coal fired power plant

    May 17, 2018Coal fired power plants are a type of power plant that make use of the combustion of coal in order to generate electricity. Their use provides around 40% of the world's electricity and they are primar...view
  • Building a Hangar

    Building a Hangar

    November 20, 2017We like the availability and quality of pre-engineered aircraft hanger onstruction. As we got into our hangar research we were amazed at the number of companies that sell pre-engineered hangars, many...view
  • Dome Modular Roof

    Dome Modular Roof

    November 21, 2017Dome modular roof are high quality, durable polycarbonate thermoformed roof , designed to make optimum use of natural light.Dome roof are available in an extensive range of over 40 sizes, and a range ...view
  • Nigeria Salvation Ministries Cathedral Church Roof Project Kick Off Meeting was successfully conclud

    Nigeria Salvation Ministries Cathedral Church Roof Project Kick Off Meeting was successfully conclud

    April 19, 2018On April 10th,2018, Salvation Ministries OPMT and BV team come to our company to visit the factory where space frame structure produced and have the kickoff meeting of the “The hand of god” cathedra...view
  • TEL:+86 516 8595 0258
  • FAX:+86 516 8595 0278
  • Email:marketing01@cnxzlf.com
  • ADDRESS:222, Block B, Diamond International, Guozhuang Road, Xuzhou, Jiangsu, China

[QUERYS RESOURCE ID #57]

Total quantity:873, Total process time:0.22962499 ms

[FILES LOADED]

Total quantity:22

Use Memory: 11.7MB

Time-consuming: 0.39097 ms