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Bridge model updating method and system based on vehicle-bridge coupling acting force correction, storage medium and equipment

A bridge model and update method technology, applied in the engineering field, can solve the problem of low simulation accuracy

Active Publication Date: 2021-09-14
HARBIN INST OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that there is no refined update method for the bridge model at present, resulting in low simulation accuracy

Method used

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  • Bridge model updating method and system based on vehicle-bridge coupling acting force correction, storage medium and equipment
  • Bridge model updating method and system based on vehicle-bridge coupling acting force correction, storage medium and equipment
  • Bridge model updating method and system based on vehicle-bridge coupling acting force correction, storage medium and equipment

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Experimental program
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specific Embodiment approach 1

[0044] Specific implementation mode one: combine figure 1 To describe this embodiment,

[0045] This embodiment is a bridge model update method based on vehicle-bridge coupling force correction, including the following steps:

[0046] The dynamic response of the bridge structure under the load of heavy-duty vehicles is obtained through the sensors that have been deployed on the bridge structure. The measured dynamic response of the bridge structure includes the vertical vibration acceleration and deflection of the bridge. The sensor layout position is the main girder of each span of the bridge. quarter point.

[0047] The heavy load in heavy-duty vehicles refers to the "Definition Method for Heavy-Duty and Heavy-Duty Traffic on Cement Concrete Pavement", as shown in Table 1:

[0048] Table 1 overload bounds

[0049]

[0050] attached figure 2 A schematic diagram of the bridge field test is given. When the heavily loaded vehicle 1 is at speed u 车 When traveling at a c...

specific Embodiment approach 2

[0104] This embodiment is a bridge model update system based on vehicle-bridge coupling force correction, and the system is used to implement a bridge model update method based on vehicle-bridge coupling force correction.

specific Embodiment approach 3

[0106] This embodiment is a storage medium, and at least one instruction is stored in the storage medium, and the at least one instruction is loaded and executed by a processor to implement a bridge model update method based on vehicle-bridge coupling force correction.

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Abstract

The invention discloses a bridge model updating method and system based on vehicle-bridge coupling acting force correction, a storage medium and equipment, and belongs to the technical field of engineering. The invention aims to solve the problem of low simulation accuracy caused by the absence of a refined updating method for a bridge model at present. According to the invention, the method comprises the steps: acquiring the dynamic response of the bridge structure under the load effect of the heavy-load vehicle through the sensors arranged on the bridge structure; according to the vertical vibration acceleration a<o> and the vertical deflection y<o> of the bridge at the gravity center o of the heavy-loaded vehicle and the speed u<vehicle> of the heavy-loaded vehicle, reconstructing the table surface response of the vibration table, and obtaining the interaction force of the vehicle-bridge coupling model; establishing a nonlinear finite element model of the bridge structure, taking the vehicle-bridge interaction force as external force, taking the dynamic response of the bridge structure as structural response, and finishing the correction of the finite element model of the bridge structure through a nonlinear parameter identification method. The method is mainly used for updating the bridge model.

Description

technical field [0001] The invention belongs to the technical field of engineering, in particular to a refined update method, system and equipment for a finite element model of a highway bridge Background technique [0002] The rapid development of infrastructure represented by roads and bridges is an important cornerstone of China's sustained economic growth. As an important transportation hub, highway bridges are of great significance to promote material transportation, improve traffic conditions in remote areas, and realize regional economic development. However, with the rapid expansion of domestic and foreign logistics business, heavy and super-heavy loads occur from time to time. Such heavy-duty vehicles exceeding the conventional design load of the bridge are likely to cause irreversible damage to the bridge and seriously affect the design life of the bridge. safety and durability within. [0003] In recent years, bridge collapse accidents caused by heavy-duty vehic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/13G06F30/23G06F111/10G06F119/14
CPCG06F30/13G06F30/23G06F2111/10G06F2119/14
Inventor 丁勇张志强刘剑周彤贾献卓常英朱斌陈光曾聪
Owner HARBIN INST OF TECH
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