BIM-based steel truss arch bridge bolt connection construction precision control method

Abstract

The invention discloses a BIM-based steel truss arch bridge bolt connection construction precision control method. According to the method, directly modeling is carried out on each prefabricated partthrough laser scanning of factory components; and with bolt holes as positioning points, the image recognition accuracy is improved. At an on-site installation link, image processing equipment is combined with a picture identification technology and thus the mounting direction of a part and a bolt control angle are identified, information is input into a revit model, geometric coordination conditions are realized in the revit model through program development, and a correct mounting position of a rear mounting component is provided; and an early warning is made under the condition that a spliced part has a relatively large bolt connection precision error. In the erecting process of the steel truss arch bridge, errors caused by manufacturing, transporting and the like of steel components are eliminated, and the bolt connecting precision is controlled, so that the current situation that the bolt connecting precision of an existing splice plate is late to find and difficult to control isavoided, and problems of stress deviation and imperfect linetype caused by dislocation of bolt hole sites of the steel truss arch bridge are solved.

Description

technical field [0001] The invention relates to the field of bolt connection construction precision control of steel truss arch bridges, in particular to the BIM-based bolt connection precision control. Background technique [0002] With the development of science and technology and the progress of human metallurgical technology, the strength and toughness of steel bridges have been further improved, making steel bridges very competitive in various types of bridges. Steel bridge construction is a comprehensive project with a long cycle and many influencing factors. In order to reduce the impact of various complex factors on bridge construction and ensure that the completed bridge reaches the design state, the construction monitoring of steel truss arch bridges is becoming more and more important to the bridge structure during erection. get people's attention. The accuracy requirements of components are much higher than that of concrete fixtures. However, due to the many com...

AI Technical Summary

Problems solved by technology

In traditional BIM applications, modeling is time-consuming and labor-intensive, and the models are often based on drawings. In the end, there are uncertainties in the factory prepayment, transportation process, and installation process with the on-site components, so the accuracy is not enough to control the accuracy of the bolt connection.

However, the traditional finite element analysis software cannot simulate the actual installation situation on site.

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