Judgment method of alarm level of monitoring data of foundation pit engineering
A judgment method and engineering monitoring technology, which is applied in infrastructure engineering, alarms, infrastructure tests, etc., can solve the problems of missing dangerous nodes, reducing the importance of alarms, and paralyzing decision-makers, so as to facilitate the automatic identification of programs , the effect of reducing the degree of manual intervention
Active Publication Date: 2017-03-15
SHANGHAI GEOTECHN INVESTIGATIONS & DESIGN INST
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Problems solved by technology
[0004] 1. The alarm system is only for individual measuring points, and cannot comprehensively consider the overall nature of the foundation pit;
[0005] 2. A single alarm level is difficult to control;
[0006] If the standard is set too loosely, it is easy to miss the corresponding dangerous nodes;
[0007] If the standard is too strict, alarms will often occur, but there is no major safety hazard in the project
In this way, on the one hand, it causes a waste of economic and human costs; on the other hand, frequent alarms will paralyze the nerves of relevant decision-makers and reduce their attention to alarms. When danger really comes, they are often caught off guard.
Method used
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[0029] Example: as figure 1 As shown in the figure, this embodiment specifically relates to a method for judging the alarm level of monitoring data of a foundation pit project, and the judging method specifically includes the following steps:
[0030] (1) Different types of measuring points are arranged at each position in the foundation pit. First, determine the test items of each measuring point;
[0031] (1.1) If each measuring point is a test item of force and crack, it only has a cumulative alarm value, but no daily change alarm value. The aforementioned force test items mainly include support axial force, column (pile, wall, column) ) internal force, bolt internal force, etc. The test items for cracks mainly include building cracks, surface cracks, etc.;
[0032] (1.1.1) First, the rate of change factor Q at this type of measuring point B Assign the value 0;
[0033] (1.1.2) Afterwards, according to this cumulative measured value C Li Carry out the cumulative quantit...
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The invention discloses a determining method for a foundation pit engineering monitoring data alarm grade. Multiple measurement points are arranged in foundation pit engineering. According to the method, all influence factors in the foundation pit engineering are graded in a quantified mode through a change rate factor QB, an accumulative amount factor QL, an environment aspect factor QH and a working condition factor QG, finally, through the formula QC=QB+QL+QH+QG, a measurement point alarm factor QC is calculated, and the alarm grade is determined according to the value of the measured point alarm factor QC. The determining method has the advantages that according to the classification of measurement point alarm degrees, an important alarm region is emphasized; all the influence factors are quantified, so that automatic program judgment is convenient, the manual intervene degree is decreased, and automatic accurate monitoring and alarming in the foundation pit engineering are achieved.
Description
technical field [0001] The invention belongs to the technical field of engineering monitoring, and in particular relates to a method for judging the alarm level of monitoring data of foundation pit engineering. Background technique [0002] The foundation pit is a soil pit excavated at the base design position according to the base elevation and the base plane size. It is a temporary project. Its function is to provide a space so that the foundation masonry operation can be carried out according to the position specified by the design. The foundation pit needs to be monitored during construction to avoid major accidents. [0003] At present, the monitoring and alarm of foundation pit engineering adopts a single alarm level, and the alarm value is generally given by the designer. Its shortcomings are as follows: [0004] 1. The alarm system is only for a single measuring point, and cannot comprehensively consider the overall situation of the foundation pit; [0005] 2. It ...
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IPC IPC(8): E02D33/00G08B21/18
Inventor 潘华夏群裴孟德褚伟洪韩云
Owner SHANGHAI GEOTECHN INVESTIGATIONS & DESIGN INST