Bamboo bridge deck

Abstract

The invention discloses a bamboo bridge deck, which comprises prestressed ribs and a plurality of superposed bridge deck sheets, wherein the prestressed ribs penetrate through the bridge deck sheets; two ends of the prestressed ribs penetrate through shim plates and are fixed and tightened by using anchorage devices to constrain the bridge deck sheets; and each bridge deck sheet is formed by sequentially joggling a plurality of single bridge decks made of bamboo veneers end to end, and the joggled parts of the two adjacent bridge deck sheets are staggered. The required width of the bridge deck is achieved in the transverse direction by the method for sequentially joggling the single bridge decks end to end in the cross section width of a bridge. The basic single decks of the bamboo bridge deck can be conveniently prefabricated in a factory and assembled on site to form the bamboo bridge deck; the construction process is simple and fast, and the construction materials are environment-friendly and are easily reclaimed; and the bamboo bridge deck is suitable for a combined structural bridge, and is a bridge deck capable of meeting the using functions and the durability.

Description

technical field [0001] The invention belongs to the technical field of bridge structures and relates to a bridge deck suitable for ordinary highway bridges and urban overpasses. Background technique [0002] With the development of the economy and the progress of the society, the bridge deck, as an important part of the bridge superstructure that directly bears the vehicle load and transmits the load to the main girder, is naturally endowed with new requirements and missions. At present, traditional bridge decks mainly include reinforced concrete bridge decks and steel bridge decks. In recent years, some new bridge decks have appeared abroad, such as FRP—reinforced concrete composite bridge decks, aluminum bridge decks, and wooden bridge decks in the United States are also one of the widely used bridge deck forms. These bridge decks have gained certain applications due to their unique advantages. [0003] The main advantages of traditional bridge decks are as follows: [...

AI Technical Summary

Problems solved by technology

[0010]2. The cost of metal bridge deck is relatively high

[0011]3. The materials used are not environmentally friendly

[0012]4. The bridge deck is easy to crack and damage

For reinforced concrete bridge decks, concrete cracking is a problem that seriously affects the durability of the structure, and the same problem exists for steel bridge decks

[0013]5. According to a series of research results on laminated board bridges in the United States, due to the limitation of the length of the available timber products and the limitation of the strength of the timber itself, the longitudinal bearing capacity of the timber beam Insufficient rigidity is a major problem. The traditional laminated wooden bridge cannot exceed 9.2m in single-span even after finger jointing. Therefore, the problem of longitudinal connection and the resulting lack of spanning capacity is the problem of laminated wooden bridges. main problems faced

In addition, due to the short length of the transverse prestressed reinforcement, the prestress loss is relatively large, and the final effective prestress is low, which will affect the overall stiffness and bearing capacity of the slab structure.

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