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Production of bridge expansion joints with free shipping nationwide
<: >: Various types of Haotong Engineering Rubber Co., Ltd.
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Type expansion joint professional manufacturer direct sales welcome to call for consultation Type bridge expansion joint is also called type bridge expansion device, with built-in rubber strips Type, the product is suitable for highway bridge projects with less than the expansion amount: Type bridge expansion joints, it is suitable for highway bridge projects with less than the expansion amount, not suitable for highways Comb-type steel plate expansion device is to make the steel plate into a comb-shaped span across the expansion joint After the gap, it is placed on the stainless steel plate at the other end. The expansion amount can reach more than 100%. It is mostly used in bridges with large and medium spans. The type (type, type, type, type) telescopic device is suitable for bridge projects with a certain amount of expansion. The type telescopic device is Modular bridge expansion joints composed of special-shaped steel and linkage mechanisms. It is suitable for bridges with a range of expansion. The expansion device is composed of special-shaped steel parallel to the direction of the bridge joint, diagonal supports and displacement boxes. It is also Suitable for bridge engineering expansion joints with a certain expansion amount, it is a new type of bridge expansion device adapted to the construction of highway bridges in my country. It uses integral hot-rolled special-shaped steel to overcome the straightness and uneven collective size of extruded special-shaped steel. The comprehensive technical performance and technical indicators of the bridge telescopic device have reached or exceeded the advanced level of similar international products. The structural type and special-shaped steel rolling are the first in China and will become a standard recommended product in the transportation industry.
First, we use fences to enclose each expansion joint of the bridge. The fences should be reinforced to ensure that they are Firm. Special personnel will be assigned to guard it, and any unrelated personnel are strictly prohibited from entering. In order to ensure the quality of the expansion joint, the construction of the expansion joint is carried out by a professional construction team and experienced operators. First, release the center line of the expansion joint, and then draw the edge line of the expansion joint groove. After drawing the line, lay colored strips of cloth along both sides of the line, and use sealing tape to fix the strips of cloth along the marked line to prevent contamination of the oil surface. Use an asphalt concrete cutting machine to cut seams on the paved road surface.
The Maurer seams should be aligned with the pavement joints on both sides. The depth of the seam opening should be . After grooving, the asphalt concrete pavement between the two seams is removed with a pneumatic pick, and then the filled sand and gravel are cleared, the wooden boards are removed, and other debris is removed with water. After removal, the colored strips are moved down accordingly to strengthen protection. , to prevent damage to the corners of the expansion joint groove. After cleaning the expansion joint groove (including debris around the support), fill the expansion joint with foam board. The foam board must be filled tightly. If the oil surface on both sides of the groove is uneven, the width of the groove should be widened to cut off the uneven oil surface. Make sure the groove is at least as deep as possible after removal. Then use a wrench to adjust the previously laid-down embedded steel bars to the appropriate position. After completion, ask the supervision engineer for acceptance. After that, check the quality of the expansion joint, and install it in the groove after passing the inspection.
Haotong can use a small gantry with a hand chain hoist (inverted chain) to lift the expansion joint into the slot. Use a ruler for leveling to ensure it is consistent with the longitudinal slope of the route to prevent the bridge from jumping. If it is inconsistent with the longitudinal slope, use a jack to adjust it. The expansion joints are fixed with #channel steel and lead wire hanging. Strictly control the elevation. After meeting the requirements, weld the expansion joint device and the embedded steel bars. Use symmetrical welding. Pay attention to the installation sequence of the steel bars. When welding, strictly follow the documents issued by the general manager's office. It is strictly prohibited to weld on Maurer-sewn steel. After welding, the unlocking time is arranged at the temperature of ℃℃ in the morning or afternoon, otherwise the temperature correction is performed. After unlocking, concrete pouring is carried out. After completion, please ask the supervision engineer for acceptance.
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