Assembly-type precast box culvert structure including glass fiber reinforced polymer rebars

Abstract

The invention relates to an assembly-type precast box culvert structure including glass fiber reinforced polymer rebars. The assembly-type precast box culvert structure comprises a plurality of assembly-type box culvert units which are sequentially connected in a sleeving mode and are precast through concrete. The glass fiber reinforced polymer rebars serve as framework supports in the box culvert units. Rubber sealing rings are arranged on the joint faces between the box culvert units. According to the assembly-type precast box culvert structure including the glass fiber reinforced polymer rebars, the box culvert units are precast through the concrete and then are assembled at a construction site so that a box culvert can be formed. The construction period is greatly shortened, and construction cost is reduced. In addition, reinforcement frameworks in a traditional box culvert are replaced into the glass fiber reinforced polymer rebars, the cost of the glass fiber reinforced polymer rebars in unit length is low, the weight is lower, the box culvert can be hoisted and assembled easily, and the material cost is greatly reduced; and moreover, the glass fiber reinforced polymer rebars are high in corrosion resistance, and thus utilization of underground pipelines can be better facilitated.

Description

technical field [0001] The invention belongs to the field of engineering construction, and in particular relates to an assembled prefabricated box culvert structure containing glass fiber bars. Background technique [0002] Box culverts are mainly used in projects such as large floodways, urban sewage pipes, underground pedestrian passages, and underground tunnels for motor vehicles. The box culvert construction generally adopts cast-in-place, pouring a layer of concrete bottom slab in the excavated trench, and then binding the processed steel bars to the lower half of the side wall on site to support the inner and outer molds, and the larger box culverts generally First pour the bottom half of the bottom slab and the side wall, then bind the upper half of the side wall and the top slab steel bars, support the inner and outer molds, and pour the upper half of the side wall and the top slab. After the concrete reaches the strength required by the design, the formwork is remo...

AI Technical Summary

Problems solved by technology

This type of box culvert needs to be poured on site, and the maintenance time is long, which does not meet the requirements of shortening the construction period and rapid construction of urban roads. In addition, the box culvert produced on site has poor impermeability, joints are difficult to connect, and the sealing performance is poor. Reinforcement, which greatly increases the weight and cost of the box culvert

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