On the contrary, if the error value of instruments and equipment exceeds the corresponding range, it will not only consume a lot of human, material and financial resources, but also affect the accuracy of measurement results and have a negative impact on subsequent construction.
In this way, it will help to ensure the construction quality of construction projects and improve the economic benefits of construction enterprises.
During the measurement of the elevation control line of the floor formwork, the construction personnel can reasonably use the measures of lifting the control line based on the actual situation of the project construction, effectively offset the floor settlement during the pouring of concrete, and make the clearance height of the main structure of the building conform to the provisions of the project design.
In the basement earthwork construction, under the guidance of relevant regulations, the construction personnel shall implement the earthwork excavation construction management of the bottom plate and beam bottom in place to avoid serious interference of the basement earthwork construction to the soil layer below the working face.
The influence of the ability of Surveyors on the accuracy of measurement data will be affected by measurement tools and instruments in the measurement link of construction engineering.
1.
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As the main body of construction engineering survey, relevant technicians can carry out survey work with the assistance of relevant instruments and tools, and carry out measurement and estimation as observers.
besides.
First, after the field survey of the surrounding environment of the construction site, select the most appropriate geographical location as the control point, and the elevation of the selected location point must meet the actual requirements of on-site observation.
As for the quality control of setting out, there are many factors affecting the construction quality of construction engineering, and setting out construction is one of the key factors.
Second, before carrying out control network measurement, relevant staff should strictly abide by relevant rules and regulations, pre check instruments and equipment, and ensure that the error caused by instruments and equipment is within the legal range before they can apply relevant instruments and equipment to measurement.
Its main body, function and exploration direction remain unchanged.
2.
Effective countermeasures for engineering measurement and error control in construction 1.
Different construction projects are located in different construction environments, so targeted measuring instruments and tools need to be used.
In the construction of the main building, for the elevation transfer of the construction layer key, the construction personnel can use the hanging steel ruler to replace the leveling method of the leveling ruler, determine the number of corresponding transfer points according to the size, height and other relevant parameters of the construction project, and select at least two transfer points to obtain accurate elevation measurement of the construction layer key.
As for the control measures of elevation projection, for the main structure of the construction project, during the construction activities, the construction personnel should pay high attention to the overall settlement value of the building floor, and properly use the technology of improving the benchmark according to the actual situation of the construction site, so as to lay the foundation for the smooth construction of the main structure of the building.
This kind of error is called reasonable measurement error.
2.
Therefore, when carrying out the error control of setting out survey, effective measures should be taken in combination with the actual situation to make the error value within the allowable range.
Please look forward to it! The main cause of measurement error in building construction is in the construction project.
Affected by these factors, even if the same tool and instrument is applied to carry out engineering survey, the measured data may be different.
Therefore, the measurement data obtained by using relevant tools and instruments are not necessarily accurate, but close to the measured true value.
3.
Third, in the process of engineering survey, relevant staff should carry out survey work with the assistance of corresponding instruments and equipment, follow the principle of three fixation of instruments, observers and observation lines, and implement survey work on this basis to ensure the accuracy of survey data.
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When judging the measurement results, the observer should properly combine his own experience and sensory organs, but this measurement method is restricted by the observer’s subjective factors, which may have a negative impact on the accuracy of the measurement data.
The new “Surveying and mapping trace” is renamed “Nanke surveying and mapping”.
When this kind of error occurs, it can be accurately processed by using the correction link.
Fourth, when carrying out the measurement of the control network, the side measurement location with small temperature difference change should be selected according to the measurement requirements, so as to promote the orderly progress of the measurement work.
The construction environment applicable to different tools and instruments is different, and the processing and manufacturing environment of tools and instruments produced by different manufacturers is different.
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In construction projects, when encountering weather factors such as low visibility and poor field of view, the observer’s identification ability will be affected by this factor, resulting in the decline of identification ability, and even affect the accuracy of instruments and tools, so as to make the accuracy of measurement results.
Affected by environmental factors, environmental factors, as an important factor affecting construction engineering survey, are uncontrollable.
In order to carry out the measurement work, it must be based on the corresponding mechanical equipment and measuring instruments.
After the main structure of the building enters the construction link, the construction personnel shall take scientific and appropriate measures for the formwork elevation control line and floor pouring elevation control line to control the error value within the allowable value.
3.
Effective control measures for the measurement error of control network in the construction engineering measurement link, relevant staff should implement the following work in place when carrying out the measurement of horizontal control network.
There are many factors that affect the measurement data of construction engineering, such as measurement technology, construction environment, relevant staff and so on.
If the error value of setting out construction is too large, it will increase the risk of construction quality problems in construction engineering.
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If there is difference between the measured data and the measured true value in the project, the difference between the two is called construction engineering measurement error.
Measuring instruments and equipment are limited in construction projects.
