Light fully assembled large cantilever ultra-high performance concrete wing beam and its construction method

Abstract

The invention provides a fully-assembled light-weight large cantilever ultra-high performance concrete spread-wing beam, which comprises a channel beam, a toothed variable cross-section cantilever beam and a corrugated rib bridge deck, wherein the channel beam, the toothed variable cross-section cantilever beam and the corrugated rib bridge deck are ultra-high performance concrete precast members,a splicing groove connected with the toothed variable cross-section cantilever beam is arranged on the top outer side of the web of the channel beam, and a cross beam is arranged on the inner side ofthe web opposite to the splicing groove; The top of the diaphragm and the top of the cantilever beam with toothed variable cross-section are toothed and embedded with anchor bolts for splicing with the bridge deck. The corrugated rib bridge deck is assembled with several prefabricated bridge decks. The corrugated ribs at the bottom of the prefabricated bridge deck are matched with the teeth on the top of the channel beam and the cantilever beam with tooth shape and variable cross-section, and bolt holes are reserved. The splicing groove and the splicing place of the precast bridge deck are poured with ultra-high performance concrete to form wet joints. The invention also discloses a construction method of the spread-wing beam. The spreading wing beam is beautiful in appearance, lightweight and excellent in stretching performance, durability up to more than 200 years, and simple in construction.

Description

technical field [0001] The invention relates to the technical field of bridge engineering, in particular to a light fully assembled large cantilever ultra-high performance concrete wing beam. Background technique [0002] At present, most bridges in our country are constructed by in-situ pouring. On-site pouring has the advantages of no need for large lifting equipment, stable and reliable construction, and good bridge integrity. As another common method of bridge construction, prefabricated installation has the advantages of short construction time, good quality of prefabricated components, environmental protection and energy saving compared with on-site pouring. However, the transportation and installation of prefabricated components are often difficult during the prefabricated installation construction process, and the requirements for transportation equipment and lifting equipment are relatively high, which increases the cost. It can be seen that a light fully assembled...

AI Technical Summary

Problems solved by technology

[0002] At present, most bridges in our country are constructed by in-situ pouring. On-site pouring has the advantages of no need for large lifting equipment, stable and reliable construction, and good bridge integrity. As another common method of bridge construction, prefabricated installation has the advantages of short construction time, good quality prefabricated components, environmental protection and energy saving compared with cast-in-place

However, the transportation and installation of prefabricated components are often difficult during the prefabricated installation construction process, and the requirements for transportation equipment and lifting equipment are relatively high, which increases the cost

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