Box culvert construction method based on movable inner formwork jumbo

Abstract

The invention provides a box culvert construction method based on a movable inner formwork jumbo. The box culvert construction method comprises the following steps that first, a box culvert bottom plate at a first section is constructed; second, after the box culvert bottom plate at the first section reaches design strength, a jumbo traveling track is laid on the box culvert bottom plate, and thelength of the traveling track is less than that of the box culvert bottom plate at the first section; third, the inner formwork jumbo is mounted on the jumbo traveling track, and the inner formwork length of the inner formwork jumbo is less than the length of the traveling track; fourth, the inner formwork jumbo is moved to the designed position and fixed, and a culvert body and a top plate at thefirst section are constructed; and fifth, after the culvert body and the top plate at the first section reach design strength, the inner formwork jumbo is moved, an outer formwork is dismantled, andthe next construction section is entered. When concrete pouring of one construction section is completed and the formwork jumbo is moved into the next construction section, only an inner formwork on the inner formwork jumbo needs to be internally retracted to enable the inner formwork to be disengaged from the poured concrete surface, and the advantage of convenient construction is realized.

Description

technical field [0001] The invention relates to the field of box culvert construction, in particular to a box culvert construction method based on a mobile inner mold trolley. Background technique [0002] With the continuous acceleration of expressway construction, the construction of long box culverts has gradually changed from traditional manual construction to mechanized construction. In the past, the construction of long box culverts generally used the combined construction technology of small steel molds, which had many shortcomings, including many working procedures, long time consumption, many reinforcement supports, poor overall appearance, difficult quality control, and the construction site The construction is difficult and the construction cost is relatively high when crossing operations. In order to solve these problems, it is an inevitable trend for the development of long box culvert construction to choose a mechanized box culvert mobile formwork trolley that ...

AI Technical Summary

Problems solved by technology

In the past, the construction of long box culverts generally used the combined construction technology of small steel molds, which had many shortcomings, including many working procedures, long time consumption, many reinforcement supports, poor overall appearance, difficult quality control, and the construction site The construction is difficult and the construction cost is relatively high when crossing operations. In order to solve these problems, it is an inevitable trend for the development of long box culvert construction to choose a mechanized box culvert mobile formwork trolley that simplifies the operation process, shortens the construction time, and improves the quality standard.

Images