A mobile rapid monitoring and intelligent evaluation method for urban viaducts
A kind of elevated bridge and mobile technology, applied in the direction of measuring device, elastic test, machine/structural component test, etc., can solve the problems of high vehicle operation requirements, large facilities, complex traffic environment, etc., and achieve wide promotion and Applicable, Applicable Effects
Active Publication Date: 2021-09-17
上海城建城市运营(集团)有限公司
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Problems solved by technology
[0003] At present, the relevant research and practical application of bridge health monitoring and early warning systems at home and abroad are mainly concentrated on large and complex bridges. Various, huge facilities, complex traffic environment, and high requirements for vehicle operation, the health monitoring system needs to have the conditions of rapid installation, mobile reuse, intelligent analysis and evaluation, and low economic cost. Very little research and practice
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Embodiment
[0044] Embodiment: The following field test is carried out on the bridge span of 1116#~1117# on Zhongshan North 2nd Road on the Shanghai Inner Ring Viaduct. Example verification of urban viaduct rapid monitoring and safety status intelligent assessment system.
[0045] The bridge span 1116#~1117# selected in this test is 19.72m long, and the cross-section form is a hollow slab girder, so the monitoring index is the total mid-span deflection. Use ANSYS software for finite element modeling, add the corresponding static load at the mid-span position, and obtain the static deflection value of the mid-span, which is used as a theoretical value for comparison with the static deflection of the mid-span obtained based on the speed signal, and set a reasonable value Threshold interval for intelligent evaluation of structural safety status.
[0046] like Image 6 As shown, three wireless speed sensors 8 are arranged at equal intervals along the longitudinal bridge, and a data acquisit...
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The invention relates to the technical field of bridge detection and evaluation, in particular to a mobile rapid monitoring and intelligent evaluation method for urban viaducts. According to the monitoring focus of the bridge type, the sensor type and arrangement are selected; the data collected by the sensors is stored in a Mobile data collection station, after correcting and recording the data, the mobile data collection station transmits the data to the remote server through 4G or 5G communication technology; after the remote server receives the data, it classifies and stores it; the structural safety status assessment module obtains the data from the remote server data, and perform preprocessing; calculate the neutral axis position deviation rate or the maximum value of the total mid-span deflection, and judge the safe state of the structure. Compared with the prior art, the present invention designs a movable rapid monitoring and intelligent evaluation method for the force characteristics of urban viaducts, and proposes a monitoring index system, which can perform rapid and intelligent evaluation of the structural safety state, and has strong applicability. It can be widely promoted and applied.
Description
technical field [0001] The invention relates to the technical field of bridge detection and evaluation, in particular to a mobile rapid monitoring and intelligent evaluation method for urban viaducts. Background technique [0002] With the rapid development of urbanization in our country, viaducts, as an effective method to solve traffic congestion and realize urban rapid transportation, are more and more appearing in people's field of vision. In the face of the rapid progress of urban construction, under the long-term coupling effect of unfavorable factors such as bridge age, environment and traffic load effects, it will bring hidden dangers to the safety and durability of urban viaducts. Therefore, it is necessary to conduct health monitoring of urban viaducts. necessary. [0003] At present, the relevant research and practical application of bridge health monitoring and early warning systems at home and abroad are mainly concentrated on large and complex bridges. Variou...
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IPC IPC(8): G01M5/00G08C17/02
CPCG01M5/0008G08C17/02
Inventor 张贻超彭崇梅操莉马明雷张香张枢文
Owner 上海城建城市运营(集团)有限公司