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Large-scale foundation pit support body deformation automation analysis system and data analysis method thereof

A technology of automatic analysis system and support body, applied in the direction of measuring devices, instruments, etc., can solve problems such as inability to adopt and specific knowledge

Active Publication Date: 2017-03-22
SHANGHAI CONSTR NO 1 GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the fact that the specific values ​​and proportions of load deformation, temperature deformation, shrinkage deformation, creep deformation, etc. cannot be known in the prior art, and effective countermeasures cannot be taken when the support body of the foundation pit undergoes large deformation , the present invention provides an automatic analysis system and data analysis method for large-scale foundation pit support body deformation, which can decompose the monitored strain data into temperature strain, load strain, shrinkage strain and creep strain, and clearly know the specific values ​​of each strain and the length ratio, real-time monitoring of the deformation data of the support body of the foundation pit, providing guarantee for the safe construction of the foundation pit

Method used

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  • Large-scale foundation pit support body deformation automation analysis system and data analysis method thereof

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Embodiment 1

[0070] see figure 1 , figure 1 The structural block diagram of the automatic analysis system for the deformation of the support body of the large foundation pit provided in this embodiment. The foundation pit support body 100 is a reinforced concrete beam, and a support body model 200 with the same cross section, the same reinforcement, and the same concrete grade as the foundation pit support body 100 is set at the construction site and poured at the same time. The deformation automatic analysis system of foundation pit supports includes several first steel bar gauges 110 , first concrete strain gauges 120 , second steel bar gauges 210 , second steel bar gauges 210 , second concrete strain gauges 220 and an intelligent monitoring platform 300 . Wherein, the first steel bar gauge 110 is connected in series to the main reinforcement of the foundation pit support body 100 to measure the comprehensive axial force F of the foundation pit support body 100 main reinforcement; the f...

Embodiment 2

[0086] With respect to Embodiment 1, the preferred implementation is to set q measuring points on the support body 100 of the foundation pit, and each measuring point is connected in series on the main reinforcement of the four orientations of the reinforcement cage at the upper, lower, left and right directions of each measuring point. Connect a first reinforcement gauge 110, and arrange a first concrete strain gauge 120 at the center of each measuring point cross-section; select S measuring points on the support body model 200, and the upper and lower reinforcement cages of each measuring point cross-section A second steel bar gauge 210 is connected in series on each of the main bars in the four orientations of , left and right, and a second concrete strain gauge 220 is arranged at the center of the cross section of each measuring point. Get the average value of four first steel bar meters on each measuring point as the stress of the foundation pit support body 100 on this me...

Embodiment 3

[0091] see Image 6 , Image 6 The flow chart of the data analysis method of a kind of large-scale foundation pit supporting body deformation automatic analysis system provided by the present invention, the following is combined Figure 1 to Figure 5 , to further describe the data analysis method. The data analysis method includes the following steps:

[0092] S1. Bind the reinforcement cage of the support body 100 of the foundation pit, select q measuring points, connect a first reinforcing bar meter 110 in series on the reinforcing bars of the upper, lower, left and right directions of the reinforcing cage at the cross section of each measuring point, A first concrete strain gauge 120 is arranged at the center of the cross-section of each measuring point. Wherein, the model of the first steel bar meter 110 matches the size of the main bar. As an example, such as figure 2 As shown in , a total of 10 measuring points are set on the support body 100 of the foundation pit,...

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Abstract

The invention discloses a large-scale foundation pit support body deformation automation analysis system and a data analysis method thereof and belongs to the foundation pit engineering field. A foundation pit support body is a reinforced concrete beam. A support body model, which has a same cross section, same reinforcement and a same concrete proportion with the foundation pit support body and is simultaneously poured, is arranged in a construction site. A data monitoring analysis system comprises a first reinforcement meter, a first concrete strain meter, a second reinforcement meter, a second concrete strain meter and an intelligent monitoring platform. The intelligent monitoring platform can correspondingly decompose a stress and strain of the monitored foundation pit support body into data of a load stress, a temperature stress, a contraction stress, load strain, temperature strain, contraction strain, creep strain and the like through using each monitored data. In the technical scheme of the invention, a stress condition of the foundation pit support body can be accurately grasped so that safety guarantee is provided for foundation pit construction.

Description

technical field [0001] The invention relates to an automatic analysis system and a data analysis method for the deformation of a support body of a large foundation pit, belonging to the field of foundation pit engineering. Background technique [0002] In large-scale foundation pit engineering, foundation pit support structure is very important. Reinforced concrete support structure is the more common foundation pit support structure. Support deformation and support axial force are important basis for evaluating the safety of the support structure and the entire foundation pit project. [0003] At present, the deformation of the reinforced concrete support structure is mainly measured by setting a concrete strain gauge in the support structure. However, the deformation of reinforced concrete is affected by a combination of loading factors as well as non-loading factors such as temperature changes, concrete shrinkage, and concrete creep. For example, the construction perio...

Claims

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Application Information

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IPC IPC(8): G01B21/32
CPCG01B21/32
Inventor 陶云海俞建强徐磊王晶莹丁惟峰汤步展
Owner SHANGHAI CONSTR NO 1 GRP
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