With the development of society and the progress of science and technology, the construction of expressways is constantly improving, and the requirements for road safety are getting higher and higher. Among them, as an important part of highway safety facilities, the development and application of the prefabrication process of high-speed crash wall are particularly important.
First, the importance of high-speed crash wall mold prefabrication.
High-speed crash walls are mainly used on both sides of highways to reduce the risk of vehicles colliding on the side of the road and improve road safety performance. The traditional high-speed crash wall adopts the method of on-site pouring, which not only has a long construction period, but also the construction quality is difficult to guarantee. And through the way of mold prefabrication, the construction efficiency and construction quality of the crash wall can be greatly improved, the construction period can be shortened, the construction cost can be reduced, and the service life and safety of the crash wall can be improved at the same time.
Second, the process flow of high-speed crash wall mold prefabrication.
The prefabrication of high-speed crash wall mould mainly includes the following process flow:
Design stage: According to the design requirements of the expressway and the actual situation of the site, design the shape, size and structure of the crash wall, and select the appropriate mold material and processing technology.
Mold making stage: according to the design drawings, CNC machine tools and other processing equipment are used to cut, bend, weld and other processing of steel to produce qualified crash wall molds.
Concrete preparation stage: according to the construction requirements, select the appropriate concrete material, and prepare it according to the mix ratio required by the design to ensure that the quality and performance of the concrete meet the requirements.
Concrete pouring stage: The prepared concrete is poured into the mold, and the vibrating table and other equipment are used to vibrate to ensure that the concrete is dense and free of bubbles.
Curing stage: curing the poured crash wall, controlling the temperature and humidity to ensure the hardening and strength growth of the concrete.
Demolding stage: After the curing is completed, the crash wall is taken out of the mold for surface treatment and inspection.
Transportation and installation stage: transport the qualified crash wall to the construction site for installation and complete the whole prefabrication process.
3. The advantages of high-speed crash wall mold prefabrication.
Compared with the traditional on-site pouring method, the prefabrication of high-speed crash wall mold has the following advantages:
Improve construction efficiency: Through mold prefabrication, the mass production of crash walls can be realized, which greatly shortens the construction period and improves construction efficiency.
Ensure the construction quality: mold prefabrication can ensure the accuracy of the shape, size and structure of the crash wall, reduce the human error of on-site construction, and improve the construction quality.
Reduce construction costs: Mold prefabrication can reduce the investment of personnel and equipment for on-site construction, and reduce construction costs. At the same time, the centralized production of prefabricated parts can improve material utilization and further reduce costs.
Improve safety: Mold prefabrication can reduce the safety risk of on-site construction and reduce the probability of accidents. At the same time, the quality inspection of prefabricated parts can be completed before leaving the factory to avoid the existence of quality hazards.