Control method forrealizing precision of jacking steel tube arch rib closure based on BIM (building information modeling) technology

Abstract

The invention belongs to the technical field of railway construction, and relates to a control method for realizing the precision of jacking a steel tube arch rib closure based on BIM (building information modeling) technology. According to the control method for realizing the precision of jacking the steel tube arch rib closure based on the BIM technology,the control of precision of jacking the steel tube arch rib closure is realized by adopting the BIM technology and controlling threes factors of the condition before jacking, the condition after in-place jacking and before closure patching,and temperature,the BIM technology of the control method for realizing the precision of jacking the steel tube arch rib closure based on BIM technologyis used for collecting and controllingthree-dimensional deviationintuitive data of an arch support pre-buried steel tube arch rib and a jacking section steel tube arch rib and becomes a decisive factor for realizing the closure precision of an archrib patching section; a"digitization" modeling function with strong BIM technology is used, and actually measured three-dimensional coordinate data provided by a survey crew are utilized; a first twodata comparison of steel tube arch rib closure jacking in the space can be realized through project tab loading; and the 3D visual function is used for intuitively judging the exact position of deviation overrun, and it is ensured that the closure patching precision meets specifications and requirements.

Description

technical field [0001] The invention belongs to the technical field of railway construction, and in particular relates to a control method based on BIM technology to realize the closing precision of the arch ribs of pushing steel pipes. Background technique [0002] The long-span continuous beam-arch of high-speed railway passenger dedicated line is a typical beam-arch composite structure. The structure has the characteristics of large span, complex structure, many system conversion procedures, and long construction period. The continuous beam-arch adopts the construction method of beam first and then arch. Continuous beam construction is a very mature construction technology; the construction process is as follows: construction preparation → pre-embedded steel pipe arch rib segment at the arch base → erecting steel pipe arch rib support → pouring roof Push the foundation and install rails → install the push wheel box group, longitudinal and horizontal beams, and transverse...

AI Technical Summary

Problems solved by technology

The structure has the characteristics of large span, complex structure, many system conversion procedures, and long construction period.

The continuous beam-arch adopts the construction method of beam first and then arch. Continuous beam construction is a very mature construction technology; the construction process is as follows: construction preparation → pre-embedded steel pipe arch rib segment at the arch base → erecting steel pipe arch rib support → pouring roof Push the foundation and install rails → install the push wheel box group, longitudinal and horizontal beams, and transverse Bailey beam groups → install steel pipe arch ribs symmetrically and segmentally from both ends, install longitudinal Bailey beams, and tension temporary steel strands → remove steel pipe arch ribs Bracket → install jacking jacks, test pushing → official pushing → pushing into place → welding and repairing the closing section → removing the pushing device, releasing temporary steel strands → pouring concrete for the second phase of the abutment; the existing technology is aimed at closing Routine calculation of segment deviation, but lack of visibility; especially when corrective measures need to be taken, there is a lack of intuitive visual reference, and scheme simulation cannot be realized