Standard segment pier column and splicing and assembling method thereof

Abstract

The invention discloses a standard segment pier column and a splicing assembling method thereof. The standard segment pier column comprises a bearing platform segment unit and a plurality of standard segment units. One end of the bearing platform segment unit is provided with first grouting sleeves and a plurality of preformed grooves. The first grouting sleeves communicate with the preformed grooves. The cross sectional dimensions of the first grouting sleeves are matched with those of second grouting sleeves of the standard segment units. Second longitudinal bars of the standard segment units are connected with the bearing platform segment unit through the first grouting sleeves and the second grouting sleeves in a grouting manner. The second longitudinal bars of the every two adjacent standard segment units are connected through the first grouting sleeves and the second grouting sleeves in a grouting manner. The splicing and assembling method of the standard segment pier column comprises the steps that the preformed grooves are grouted, vibrating and densifying are conducted, the second longitudinal bars stretch into the preformed grooves of the installed standard segment units, the second grouting sleeves stretch into the first grouting sleeves, and after the grouting materials reach designed strength, splicing and assembling of the next standard segment unit begins.

Description

technical field [0001] The invention relates to the technical field of assembled structures, in particular to a standard segmental pier column and an assembly method thereof. Background technique [0002] In order to improve the seismic performance of the prefabricated section-assembled piers, energy-dissipating steel bars are placed between the prefabricated sections, which can increase the lateral stiffness of the pier, reduce the maximum displacement response, delay the opening of the joints, and increase the ductility of the structure. It is a common way to connect energy-dissipating steel bars through grouting sleeves. The grouting sleeves can provide lateral restraint for the grouting material, enhance the bonding strength between the energy-dissipating steel bars and the grouting material, and make the connection of the energy-dissipating steel bars in the upper and lower segments more efficient. For solid. [0003] However, if Figure 1-Figure 2 As shown, when the g...

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Problems solved by technology

[0003] However, if Figure 1-Figure 2 As shown, when the grouting sleeve 4 connects the energy-dissipating steel bar 3 of the upper section pier column 1 and the lower section pier column 2, a set of grouting sleeve 4 can only connect one energy-dissipating steel bar 3 and connect multiple energy-dissipating steel bars 3, it is necessary to use multiple sets of grouting sleeves 4. Since the diameter of the grouting sleeves 4 is usually 2-3 times the diameter of the energy-consuming steel bar 3, the congestion of the reinforcement arrangement in the section is exacerbated.

In addition, each set of grouting sleeves needs to be grouted separately during construction, the process is complicated, the cost is high, and it is difficult to ensure the quality of grouting, which may lead to partial filling of joints, stress concentration, cracking and corrosion

[0004] In addition, it is difficult for prefabricated segments to provide sufficient shear bearing capacity only by friction at the joints, resulting in a weak shear surface at the joints. Usually, a shear key is provided at the grouting sleeve, but the shear key The setting increases the structural complexity of the connection, which is not conducive to design and construction. At the same time, how to realize the standardized prefabrication of sections is also a problem that needs to be solved now

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