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Monitoring method for bridge deformation in shield construction and system employed by method

A technology for construction and bridges, which is applied in the field of monitoring methods and systems used, can solve the problems of difficulty in realizing continuous monitoring automation, unsuitable railway viaducts, large control indicators, etc.

Inactive Publication Date: 2015-12-16
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Existing bridge monitoring methods are mainly for highway bridges, and less for railway bridge deformation monitoring
Conventional measurement methods have high measurement accuracy and reliable data, but the observation workload is large, the efficiency is low, and the climate is greatly affected, so it is difficult to realize continuous monitoring and automation of the measurement process
Nowadays, the most widely used deformation measurement data acquisition equipment and technologies include photogrammetry technology, GPS technology, automatic total station method and three-dimensional laser scanner, and the measurement accuracy of these methods is generally low.
[0005] There are also many regulations on the control indicators of bridge deformation, but most of them are related to the deformation of the bridge itself during the construction process. There are few control indicators for bridge deformation caused by shield construction, and the control indicators in the early stage are relatively large. Suitable for

Method used

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  • Monitoring method for bridge deformation in shield construction and system employed by method
  • Monitoring method for bridge deformation in shield construction and system employed by method
  • Monitoring method for bridge deformation in shield construction and system employed by method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The upper structure of the shield tunnel passing through the railway viaduct is a simply supported beam structure with a span of 32.6m. The scope of influence of shield construction is the three piers of the railway viaduct.

[0036] A monitoring method for bridge deformation during shield construction, such as figure 1 As shown, figure 1 It is a flowchart of a method for monitoring bridge deformation in shield construction according to an embodiment of the present invention. It includes the following steps: during the shield construction process, monitor the railway viaduct to obtain the monitoring data of the bridge deformation, then transmit the data and input the data to obtain the database, perform monitoring and analysis based on the data in the database, and analyze the monitoring data during the monitoring process , And draw the change curve of each indicator, control the monitoring frequency through the form of the change curve of the indicator data, and finally m...

Embodiment 2

[0045] The upper structure of the shield tunnel under the railway viaduct is a simply supported beam structure with a span of 24m. The scope of influence of shield construction is the three piers of the railway viaduct.

[0046] A system used in the monitoring method of bridge deformation during shield construction, including a fixed facility system and an automatic monitoring system;

[0047] The fixed facility system is to provide equipment for the automatic monitoring system for monitoring;

[0048] The automatic monitoring system uses a fixed facility system for monitoring to obtain monitoring data of bridge deformation.

[0049] Among them: the fixed facility system is laid out according to the visibility conditions of the construction site, the construction site plan and the location of the viaduct pier; the fixed facility system provides hardware support for reflecting bridge deformation and data reading; the fixed facility system includes fixed observation piers or prisms Fac...

Embodiment 3

[0052] The method of the present invention can be used in safety monitoring of railway viaducts. The upper structure of the shield tunnel passing through the railway viaduct is a continuous beam structure with a span of 80m. The scope of influence of shield construction is the two piers of the railway viaduct.

[0053] A system used in the monitoring method of bridge deformation during shield construction, including a fixed facility system and an automatic monitoring system;

[0054] The fixed facility system is to provide equipment for the automatic monitoring system for monitoring;

[0055] The automatic monitoring system uses a fixed facility system for monitoring to obtain monitoring data of bridge deformation.

[0056] Among them: the fixed facility system is laid out according to the visibility conditions of the construction site, the construction site plan and the location of the viaduct pier; the fixed facility system provides hardware support for reflecting bridge deformatio...

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PUM

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Abstract

The invention discloses a monitoring method for bridge deformation in shield construction. According to the method, in the shield construction process, bridge deformation monitoring data is obtained by monitoring a railway viaduct, then the data is transmitted and logged for obtaining a database, monitoring analysis is performed according to data in the database, and finally determination is performed. The invention also discloses a system employed by the above method. The system comprises a fixed facility system and an automatic monitoring system; the fixed facility system is used for providing equipment for the automatic monitoring system for monitoring; and the automatic monitoring system is used to performing monitoring by using the fixed facility system for obtaining the bridge deformation monitoring data. The method is capable of realizing continuous dynamic precise monitoring on bridge settlement and displacement statuses when a shield machine passes underneath the railway viaduct, provides control index of the railway viaduct, and is capable of quantitatively evaluating the safety of the railway viaduct.

Description

Technical field [0001] The invention belongs to the technical field of bridge monitoring, and relates to a method for monitoring bridge deformation in shield construction and a system used therefor, and more specifically, to the settlement of the non-stop railway viaduct during the construction of a shield tunnel underneath a railway viaduct. And the high-frequency real-time monitoring method of displacement and its used system. Background technique [0002] With the rapid development of cities in my country, ground transportation has gradually become congested. In order to improve ground transportation conditions, urban underground space has been developed and utilized. Major cities across the country are scrambling to build civil engineering projects and plan to implement their own subway public transportation construction. Shield construction has the advantages of high efficiency, high degree of mechanization, strong adaptability to the ground, effective control of ground defo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C5/00
Inventor 周顺华季昌宗维凯肖军华于凯文
Owner TONGJI UNIV
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