A prefabricated bearing pier structure and its construction method

Abstract

The invention relates to a prefabricated bearing pier structure and a construction method. A prefabricated pier connecting section and a lower prefabricated pier are prepared in a prefabrication factory, a first pressure dispersion plate and a second pressure dispersion plate are arranged in the prefabricated pier connecting section, and the bottom is provided with a pier bottom connecting grooveand a groove strengthening plate; a third pressure dispersion plate and inner connecting ribs are arranged on the top of the lower prefabricated pier, a pier core reserved pipe, a light filling body,a transverse connecting pipe and a slurry stop baffle are arranged inside, a grouting bag is arranged on the outer side, and a fourth pressure dispersion plate is arranged at the bottom; fastening tiebars, a flexible joint layer and connecting hooks are arranged at the connecting position of the prefabricated pier connecting section and the lower prefabricated pier; grouting is conducted on the bottom of the lower prefabricated pier, a pier bottom bearing body is formed, grouting is conducted on the interior of the grouting bag on the outer side, and a bag grouting body is formed; and finally, pier top platform construction is conducted. By means of the prefabricated bearing pier structure and the construction method, the bearing capability of the prefabricated bearing pier can be improved, the field construction efficiency is improved, and the structure integrity is enhanced.

Description

technical field [0001] The invention relates to a pier foundation structure and a construction method, in particular to a prefabricated load-bearing pier structure and a construction method thereof, which belong to the field of foundation treatment and are suitable for sandy soil, cohesive soil and silt foundation treatment engineering. Background technique [0002] In civil engineering, in order to effectively bear the load of the upper structure, it is often necessary to carry out foundation engineering construction. The pier foundation usually refers to a rigid foundation with a diameter greater than 800mm, a length of 3m to 6m, or a length-to-diameter ratio of L / D<6, which has high bearing capacity, strong pullout and earthquake resistance, low construction cost, and small settlement Etc. At present, the pier foundation has been widely used in projects such as bridges, landslide treatment, high-rise buildings and port terminals, and has achieved good engineering appl...

AI Technical Summary

Problems solved by technology

Although the above-mentioned structure can enhance the bearing capacity of the pier foundation to a certain extent and play the effect of composite piles, the construction steps are more complicated and the construction quality control on site is more difficult

[0005] To sum up, at present, the engineering community has not reached a consensus on the pier foundation structure and construction technology with a foundation buried depth of 3m to 6m. The existing pier foundation structure has room for improvement in terms of construction technology and mechanical properties.

Images