2results about How to "Reduce local damage" patented technology

The utility model discloses an asymmetric non -middle wall connected arch tunnel support system relates to tunnel support technical field, including connected arch tunnel first -pass hole initial support, connected arch tunnel first -pass hole initial support includes I20a type steel arch frame, inside phi 8 steel bar net, outside phi 8 steel bar net, steel arch frame connecting reinforcing steel bar, big arch foot reinforcing cage, big arch foot steel arch frame triangle bracing structure, big arch foot steel arch frame connecting steel sheet and stiffened steel plate, through the first -pass hole initial support of setting, first -pass hole initial support adopts I20a type steel arch frame, inside phi 8 steel bar net, outside phi 8 steel bar net, steel arch frame connecting reinforcing steel bar, big arch foot reinforcing cage, big arch foot steel arch frame triangle bracing structure, connecting steel plate and stiffened steel plate, form high -strength, high rigid support system, effectively disperses the surrounding rock pressure, reduces local damage, and system anchor rod and radial injection grouting small catheter consolidate surrounding rock through injection grouting, further enhances the stability of surrounding rock.

This utility model discloses a wind-resistant structure for the crown of a high-rise building, including a mass block disposed inside the crown and steel cables disposed inside the crown, with the mass block suspended inside the steel cables. The mass block consists of an upper part, a middle part, and a lower part. The upper part consists of block A, block B, and block C. Block A is disposed on top of block B, and block C is disposed at the bottom of block B. An installation mechanism is provided at the connection between the top of block B and blocks A and C. By using a modular design, the mass block is divided into relatively small modules, reducing the requirements for manufacturing equipment, manufacturing difficulty, and cost. Compared with the integral type, the modular mass block has a smaller individual module size and weight, which can be transported using ordinary transportation tools, making it easier to cope with road height and weight restrictions, greatly reducing transportation difficulty and cost. At the installation site, the smaller modules are easier to operate and position.