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2023.04.28
How to optimize the design of pre-stressed plastic corrugated pipe for impact resistance?
The smoothness and controllability of energy absorption during the collision of prestressed plastic bellows is good for the design of energy-absorbing structures. However, due to the high nonlinearity of the bellows crashworthiness problem. It is difficult to optimize the design of its crashworthiness. Wang Xiao et al. applied the orthogonal optimization design method to optimize the bellows crashworthiness locally rather than globally, and only optimized the single objective of maximum acceleration.
Brief description of the 2 methods of using prestressing anchorage
Prestressing anchorage is a kind of anchorage often used in building construction and plays an important role. Due to the different construction sites, there are different methods of use. Next, we will mainly talk about the 2 common methods of use.
What are the advantages of the pre-stressed corrugated pipe installation process?
The advantage of the prestressing bellows installation process lies in the fact that the formwork at the tensioning end is closed tightly, so that leakage is not easy to occur, and the time of wearing the strand can be staggered with the installation of reinforcement and bellows as well as the concrete pouring to improve the efficiency. At the same time, the prestressing steel strand is exposed to a kind of high temperature weather, and if it is placed in the orifice for too long, it is easy to produce a kind of serious rusting, and this method can avoid the occurrence of such problems. If it is used in the waterproof over water, it may be equipped with plastic hose joints, if you need to use the joints in the open such as the selection of prestressed corrugated pipe when you should choose the standard model of the national standard, so as to avoid the time when the hose and the joint does not fit tightly or pipe big head small card does not go in and other phenomena. The tube should also be slightly hard to be good, so that a good card joint will not fall out once pulled.
What is included in the maintenance of mining anchorages?
Mining anchorages are widely used in tunnels, slope maintenance, foundation reinforcement and other fields with the advantages of high anchorage force and anchorage depth can be **selected. In order to ensure its working efficiency and stability, the daily maintenance of anchorages should be done, and the specific maintenance is as follows.
