Modularization pole system of hollow pole unit using internal constraint and building method

Abstract

The invention relates to a modular column system and a construction method; the modular column system is constructed by stacking a preformed unit at least between a foundation part and a top part; the preformed unit uses a preformed hollow column unit the internal of which is restricted to form a connection part among the preformed units firmly; as the mode of a reinforcing bar and a reinforcement is not used, the modular column system realizes the short construction period and economy, the high resistance of a bending moment and the reduction of the cross-sectional area and the self weight of the preformed unit at the same time, thus leading the assembly of the modular column system to be easier and more economical and preventing the brittle rupture of the connection part among the preformed units.

Description

technical field [0001] The invention mainly relates to a modular column system built by stacking at least one prefabricated unit between a base part and a top part, and a method of its construction. Wherein the prefabricated unit utilizes a prefabricated internally confined hollow column unit, and firmly forms the connection part between the prefabricated units. In this way, the modular column system achieves a short construction period and economy because no steel bars and steel bar forms are used, and at the same time achieves a high degree of resistance to bending moments and a reduction in the cross-sectional area and self-weight of the prefabricated unit, so that the modular column system It can be assembled more easily and economically, and prevents brittle fracture of the connecting parts between prefabricated parts. Background technique [0002] Generally, piers constructed in bridge construction are cast-in-place concrete structures in which, after foundation pit e...

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Problems solved by technology

[0015] However, a reinforced concrete pier of solid section has a number of disadvantages: it is difficult to use on sites where the foundation part encounters structural problems due to its own weight, it is economically disadvantageous due to the increased cost of the concrete material, and it is economically disadvantageous due to the heat of hydration when the concrete is poured. generation, with the possibility of cracks

[0023] However, the ductility of piers or columns with hollow sections is questionable because the concrete confinement effect is difficult to predict

In other words, piers or columns with hollow sections show poor ductility in practice due to the brittle fracture action that occurs inside the hollow section due to the absence of concrete confinement effects

[0024] However, so far, with regard to the proposed modular piers, there has been no particular study of excess self-weight when using concrete to manufacture prefabricated units, high raw material costs when using CFT as a raw material to replace concrete, whether to introduce Hollow section as a solution to increase in section and dead weight, brittle fracture of hollow section when using hollow section, and maintenance when using CFT for such as underwater pier

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