CN111829910A - Quality evaluation method for filling leveling layer on floating ground - Google Patents
Quality evaluation method for filling leveling layer on floating ground Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 37
- 238000013441 quality evaluation Methods 0.000 title claims abstract description 15
- 238000011156 evaluation Methods 0.000 claims abstract description 54
- 239000000463 material Substances 0.000 claims abstract description 12
- 238000006073 displacement reaction Methods 0.000 claims description 8
- 238000010276 construction Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 2
- 230000009191 jumping Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000009659 non-destructive testing Methods 0.000 description 2
- 230000001739 rebound effect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012458 free base Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/40—Investigating hardness or rebound hardness
- G01N3/52—Investigating hardness or rebound hardness by measuring extent of rebound of a striking body
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
- G01M5/0075—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by means of external apparatus, e.g. test benches or portable test systems
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/40—Investigating hardness or rebound hardness
- G01N3/48—Investigating hardness or rebound hardness by performing impressions under impulsive load by indentors, e.g. falling ball
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/001—Impulsive
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0076—Hardness, compressibility or resistance to crushing
- G01N2203/0078—Hardness, compressibility or resistance to crushing using indentation
- G01N2203/008—Residual indentation measurement
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/0641—Indicating or recording means; Sensing means using optical, X-ray, ultraviolet, infrared or similar detectors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
Abstract
The embodiment of the invention relates to the technical field of floating ground, and provides a quality evaluation method for filling a leveling layer on the floating ground. The quality evaluation method for the filling leveling layer of the floating ground, provided by the embodiment of the invention, comprises the following steps: measuring the numerical value of each rebound height of the impact head after the impact head collides with the pressure-bearing air bag; drawing an actually-measured rebound curve according to the numerical value of each rebound height, and comparing the actually-measured rebound curve with a standard rebound curve to obtain a rigidity evaluation result of the floating ground filling leveling layer; measuring the depth of a pit formed on the ground after the impact head collides with the ground to obtain the mechanical property evaluation result of the floating ground filling leveling layer; and integrating the rigidity evaluation result and the mechanical property evaluation result to further evaluate the quality of the floating ground filling leveling layer. The quality evaluation method for the filling and leveling layer of the floating ground, provided by the embodiment of the invention, can simultaneously represent two properties of the rigidity of the filling and leveling layer and the mechanical property of the material of the filling and leveling layer, and the method is simple and easy to implement.
Description
Technical Field
The invention relates to the technical field of floating ground, in particular to a quality evaluation method for a filling leveling layer of the floating ground.
Background
The floating ground is designed on the ground, and an isolation layer is adopted between the structural layer and the filling leveling layer, so that the filling leveling layer and the structural layer can be separated from each other to adapt to respective deformation, and the mutual restriction caused by different changes of the upper layer and the lower layer is reduced. The filling leveling layer has the performances of heat preservation and sound insulation.
Because the sound insulation layer between the filling leveling layer and the structural layer is usually soft elastic substances such as XPS, EPS and the like, the material performance and the thickness of the filling leveling layer have direct influence on the flexural rigidity. The bending rigidity determines the deformation capacity of the whole filling leveling layer under the action of bearing external load, and the filling leveling layer is easy to crack when the deformation is too large.
Therefore, the method for evaluating the performance and rigidity of the material of the filling leveling layer after the construction is finished is used for evaluating the quality of the filling leveling layer, and is an important index for ensuring the engineering quality of the floating ground system.
Disclosure of Invention
In order to solve the problems in the prior art, the embodiment of the invention provides a quality evaluation method for filling a leveling layer on a floating ground.
According to one embodiment of the invention, the quality evaluation method of the floating ground filling leveling layer comprises the following steps: measuring the numerical value of each rebound height of the impact head after the impact head collides with the pressure-bearing air bag; drawing an actually-measured rebound curve according to the numerical value of each rebound height, and comparing the actually-measured rebound curve with a standard rebound curve to obtain a rigidity evaluation result of the floating ground filling leveling layer; measuring the depth of a maximum pit formed on the ground after the impact head collides with the ground for multiple times, and obtaining the mechanical property evaluation result of the floating ground filling leveling layer; and integrating the rigidity evaluation result and the mechanical property evaluation result to further evaluate the quality of the floating ground filling leveling layer.
According to an embodiment of the present invention, the step of drawing an actually measured rebound curve according to the value of each rebound height, and comparing the actually measured rebound curve with a standard rebound curve to obtain a stiffness evaluation result of the filling leveling layer of the floating ground further includes: and calculating the height difference value of each rebound height and the standard rebound curve, and selecting the average value of the absolute values of the height difference values as a first evaluation parameter.
According to an embodiment of the present invention, the step of drawing an actually measured rebound curve according to the value of each rebound height, and comparing the actually measured rebound curve with a standard rebound curve to obtain a stiffness evaluation result of the filling leveling layer of the floating ground further includes: and calculating the phase difference between the actually-measured rebound curve and the standard rebound curve, and selecting the average value of the absolute values of the phase differences as a second evaluation parameter.
According to an embodiment of the present invention, the step of selecting an average value of absolute values of the plurality of height difference values as the first evaluation parameter further includes: selecting the average value of the absolute values of the first 5 height difference values as the first evaluation parameter; the step of selecting an average value of the absolute values of the plurality of phase differences as a second evaluation parameter further includes: and selecting the average value of the absolute values of the first 5 phase difference values as the second evaluation parameter.
According to an embodiment of the present invention, the step of drawing an actually measured rebound curve according to the value of each rebound height, and comparing the actually measured rebound curve with a standard rebound curve to obtain a stiffness evaluation result of the filling leveling layer of the floating ground further includes: and judging the rigidity of the floating ground filling leveling layer, wherein if the first evaluation parameter is less than or equal to 50mm and the second evaluation parameter is less than or equal to 5 degrees, the rigidity of the floating ground filling leveling layer is judged to meet the use requirement.
According to an embodiment of the invention, before the step of measuring the value of each rebound height of the impact head after the impact head collides with the pressure-bearing air bag, the method further comprises the following steps: and lifting the impact head to a preset height along a guide rod, and fixing the impact head on the guide rod.
According to an embodiment of the invention, before the step of measuring the value of each rebound height of the impact head after the impact head collides with the pressure-bearing air bag, the method further comprises the following steps: and adjusting the verticality of the guide rod to enable the guide rod to be vertically arranged on a bearing device, and loosening the impact head to enable the impact head to freely fall along the guide rod.
According to an embodiment of the invention, before the step of measuring the depth of the maximum pit formed on the ground after the impact head collides with the ground for multiple times to obtain the mechanical property evaluation result of the floating ground filling leveling layer, the method further comprises the following steps: and removing the pressure-bearing air bag and the bearing device, lifting the impact head to a preset height along the guide rod, and then enabling the impact head to vertically fall down.
According to an embodiment of the present invention, the step of integrating the evaluation result of the stiffness of the floating ground filling leveling layer and the evaluation result of the mechanical property of the floating ground filling leveling layer to evaluate the quality of the floating ground filling leveling layer further includes: and after the rigidity of the filling leveling layer of the floating ground meets the use requirement, evaluating the bearing type of the floating ground according to the depth of the pits.
According to one embodiment of the invention, the quality evaluation method of the floating ground filling leveling layer further comprises the following steps: according to different material characteristics of the filling leveling layer, a relation curve of impact energy and ground displacement is established by adjusting the weight of the impact head and the falling height of the impact head, and the critical load value bearable by the floating ground filling leveling layer is judged by fitting the relation curve of the impact energy and the ground displacement.
The quality evaluation method for the filling leveling layer of the floating ground, provided by the embodiment of the invention, provides an evaluation method for the rigidity and the bearing capacity of the filling leveling layer for on-site nondestructive testing of the floating ground structure. The quality evaluation method for the filling leveling layer of the floating ground, provided by the embodiment of the invention, can simultaneously represent two properties of the rigidity of the filling leveling layer and the mechanical property of the material of the filling leveling layer, is simple and feasible, and provides quality guarantee for the construction of the floating ground.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a flow chart of a method for evaluating the quality of a filling screed for a floating ground according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a device for measuring the filling level of a floating floor according to an embodiment of the present invention;
FIG. 3 is a graph comparing the standard rebound curve shown in FIG. 1 with the measured rebound curve.
Description of reference numerals:
1-a level meter; 2-laser range finder; 3-impact head; 4-a guide rod; 5-a pressure-bearing air bag; 6-carrying device; 7-a data acquisition processor; s01, S02, S03, S04-steps.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, in the description of the present invention, unless otherwise specified, "plurality", "plural groups" means two or more, and "several", "several groups" means one or more.
Referring now to fig. 1 and 2, embodiments provided by the present invention will be described. It should be understood that the following description is only exemplary embodiments of the present invention and does not constitute any particular limitation of the present invention.
In one embodiment of the present invention, as shown in fig. 1, the method for evaluating the quality of the filling screed of the floating ground comprises:
s01, measuring the numerical value of each rebound height of the impact head 3 after the impact head 3 collides with the pressure-bearing air bag 5;
specifically, as shown in fig. 2, the impact head 3 is sleeved on the guide rod 4, the lower end of the guide rod 4 is provided with the pressure-bearing air bag 5, the pressure-bearing air bag 5 is arranged on the bearing device 6, and the bearing device 6 is fixed with the ground. The impact head 3 collides with the pressure-bearing air bag 5 after falling down along the guide rod 4 to generate downward pressure on the bearing device 6, the ground is bent downwards under the impact action to generate displacement, the pressure-bearing air bag 5 generates certain rebound effect on the impact head 3 after absorbing part of the impact effect, and the impact head 3 generates repeated rebound under the rebound effect of the pressure-bearing air bag 5. The laser rangefinder 2 can measure the value of each rebound height in real time.
Furthermore, the laser range finder 2 monitors the jumping change of the impact head 3 in real time, and when the ground bends downwards under the impact action, the impact head 3 is influenced to jump, the rebound height and the jumping frequency of the impact head 3 are changed, so that the behavior characteristics of the impact head 3 after rebounding are recorded through the laser range finder 2, the rigidity of the filling leveling layer can be analyzed, and the construction thickness and the bearing capacity are further judged.
S02, drawing an actually-measured rebound curve according to the numerical value of each rebound height, and comparing the actually-measured rebound curve with a standard rebound curve to obtain a rigidity evaluation result of the floating ground filling leveling layer;
specifically, as shown in fig. 2, the data acquisition processor 7 is electrically connected to the laser range finder 2, the laser range finder 2 measures the value of each rebound height and then sends the value to the data acquisition processor 7, the data acquisition processor 7 draws an actually measured rebound curve of the impact head 3 rebounding according to the value of each rebound height and compares the actually measured rebound curve with a standard rebound curve, and when the comparison result meets a preset condition, the rigidity of the floating ground filling leveling layer meets the use requirement.
S03, measuring the depth of the maximum pit formed on the ground after the impact head 3 collides with the ground for multiple times, and obtaining the mechanical property evaluation result of the floating ground filling leveling layer;
specifically, the pressure-bearing air bag 5 and the bearing device 6 of the floating ground filling leveling layer performance measuring device are removed, the impact head 3 vertically falls along the guide rod 4, a pit with a certain depth can be generated after the impact head 3 collides with the ground, the impact head 3 falls repeatedly for many times, the depth of the maximum pit formed on the ground is measured, and when the depth of the maximum pit is larger than a preset value, the filling leveling layer material has poor mechanical performance.
And S04, evaluating the quality of the filling leveling layer of the floating ground by integrating the rigidity evaluation result and the mechanical property evaluation result.
Specifically, when the rigidity of the floating ground filling leveling layer meets the use requirement, the bearing type of the floating ground filling leveling layer can be determined by combining the mechanical properties of the filling leveling layer material. Further, the bearer types include: areas where heavy and/or heavy duty carts are expected to be carried or where the filled screed does not allow for any breaks, areas where heavy and/or medium weight carts are expected to be carried, other areas subject to heavy and heavy carts.
The quality evaluation method for the filling leveling layer of the floating ground, provided by the embodiment of the invention, provides an evaluation method for the rigidity and the bearing capacity of the filling leveling layer for on-site nondestructive testing of the floating ground structure. The quality evaluation method for the filling leveling layer of the floating ground, provided by the embodiment of the invention, can simultaneously represent two properties of the rigidity of the filling leveling layer and the mechanical property of the material of the filling leveling layer, is simple and feasible, and provides quality guarantee for the construction of the floating ground.
In an embodiment of the present invention, before measuring the value of each rebound height of the impact head 3 after the impact head 3 collides with the pressure-bearing airbag 5 in step S01, the method further includes:
as shown in fig. 2, the impact head 3 is lifted to a predetermined height along the guide rod 4 and fixed to the guide rod 4. The top end of the guide rod 4 is provided with a level gauge 1, and the verticality of the guide rod 4 can be adjusted. The guide rod 4 is vertically arranged on the bearing device 6, and the impact head 3 is loosened, so that the impact head 3 freely falls along the guide rod 4. Laser range finder 2 is installed in the outside and the inside of guide arm 4, and laser range finder 2 measurable quantity strikes the head 3 top and the distance between the 4 tops of guide arm, still can measure the distance between 4 tops of guide arm and the load-bearing device 6, and the difference between the two is the height value that strikes head 3 and kick-back every time.
In an embodiment of the present invention, as shown in fig. 3, in step S02, a measured rebound curve is drawn according to the value of each rebound height, and compared with a standard rebound curve to obtain a result of evaluating the stiffness of the filling screed of the floating ground, further comprising:
and calculating the height difference value of each rebound height and the standard rebound curve, and selecting the average value of the absolute values of the height difference values as a first evaluation parameter. For example, in one embodiment of the present invention, the first 5 rebound heights can be selected for comparison with the height of a standard rebound curve, and the average of the absolute values of the first 5 height differences can be used as the first evaluation parameter, e.g., Δ h.
And calculating the phase difference between the actually-measured rebound curve and the standard rebound curve, and selecting the average value of the absolute values of the phase differences as a second evaluation parameter. For example, in one embodiment of the present invention, the average of the absolute values of the first 5 phase differences may be selected as the second evaluation parameter, such as Δ θ. And if the first evaluation parameter is less than or equal to 50mm and the second evaluation parameter is less than or equal to 5 degrees, specifically, when the delta h is less than or equal to 50mm and the delta theta is less than or equal to 5 degrees, judging that the rigidity of the filling leveling layer of the floating ground meets the use requirement.
It should be noted that: the standard rebound curve is the rebound curve of a concrete with thickness not less than 100mm and similar to a settlement-free base course. When the floating ground leveling layer is made of other materials, the set values of the first evaluation parameter and the second evaluation parameter are required to be calibrated again in a laboratory.
In an embodiment of the present invention, before the step S03 of measuring the depth of the maximum pit formed on the ground after the impact head 3 collides with the ground for multiple times, and obtaining the mechanical performance evaluation result of the filling leveling layer of the floating ground, the method further includes:
and removing the pressure-bearing air bag 5 and the bearing device 6, lifting the impact head 3 to a preset height along the guide rod 4, adjusting the verticality of the guide rod 4 through the level meter 1, keeping the guide rod 4 vertical, and vertically dropping the impact head 3 to measure the depth of a maximum pit formed on the ground after the impact head 3 collides with the ground. Further, in one embodiment of the present invention, the depth of the maximum pit formed in the ground is measured after the impact head 3 is repeatedly dropped 4 times.
In an embodiment of the present invention, in step S04, the stiffness evaluation result and the mechanical property evaluation result are combined to evaluate the quality of the floating ground filling leveling layer, and the method further includes:
and after the rigidity of the filling leveling layer of the floating ground meets the use requirement, evaluating the bearing type of the floating ground according to the depth of the pits. Specifically, as shown in table 1 below:
TABLE 1 filling leveling course pit depth and bearing type relationship
When the maximum pit depth of 5% at most exceeds the maximum pit depth of table 1 by 1mm at most, it means that the floating ground filling screed is not suitable for constructing the corresponding facility. For example: the maximum depth of 100 pits was measured on a filled screed with 100 tests, wherein when the maximum depth of 5 pits exceeded 4mm, the plot was not suitable for constructing the installation of category a in table 1.
In one embodiment of the invention, the quality evaluation method for filling the leveling layer on the floating ground further comprises the following steps: according to the material characteristics of different filling leveling layers, a relation curve of impact energy and ground displacement is established by adjusting the weight of the impact head 3 and the falling height of the impact head 3, and the critical load value bearable by the floating ground filling leveling layer is judged by fitting the relation curve of the impact energy and the ground displacement.
Specifically, for example, the material filling the screed is concrete, and a standard curve of impact energy versus ground displacement may be established. At the moment, the weight of the impact head 3 and the falling height of the impact head 3 can be adjusted to establish an actual measurement relation curve, the actual measurement relation curve is compared with a standard relation curve, and when the difference value is within a preset range, the weight and the falling height of the impact head 3 are the critical load values which can be borne by the floating ground filling leveling layer. It should be noted that: the weight of the impact head 3 is classified into 3-5 grades, and the guide rod 4 is provided with a height mark so as to record the initial set height of the impact head 3. The impact energy can be calculated from the mass of the impact head 3 and the height at impact.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A quality evaluation method for a floating ground filling leveling layer is characterized by comprising the following steps:
measuring the numerical value of each rebound height of the impact head after the impact head collides with the pressure-bearing air bag;
drawing an actually-measured rebound curve according to the numerical value of each rebound height, and comparing the actually-measured rebound curve with a standard rebound curve to obtain a rigidity evaluation result of the floating ground filling leveling layer;
measuring the depth of a maximum pit formed on the ground after the impact head collides with the ground for multiple times, and obtaining the mechanical property evaluation result of the floating ground filling leveling layer;
and integrating the rigidity evaluation result and the mechanical property evaluation result to further evaluate the quality of the floating ground filling leveling layer.
2. The method for evaluating the quality of a filling screed for a floating ground according to claim 1, wherein the step of drawing an actually measured rebound curve according to the value of each rebound height and comparing the actually measured rebound curve with a standard rebound curve to obtain the evaluation result of the stiffness of the filling screed for the floating ground further comprises:
and calculating the height difference value of each rebound height and the standard rebound curve, and selecting the average value of the absolute values of the height difference values as a first evaluation parameter.
3. The method for evaluating the quality of the floating ground filling screed according to claim 2, wherein the step of drawing an actually measured rebound curve according to the value of each rebound height and comparing the actually measured rebound curve with a standard rebound curve to obtain the evaluation result of the rigidity of the floating ground filling screed further comprises:
and calculating the phase difference between the actually-measured rebound curve and the standard rebound curve, and selecting the average value of the absolute values of the phase differences as a second evaluation parameter.
4. The method for evaluating the quality of a filling screed according to claim 3, wherein the step of selecting an average of absolute values of the plurality of height differences as the first evaluation parameter further comprises: selecting the average value of the absolute values of the first 5 height difference values as the first evaluation parameter;
the step of selecting an average value of the absolute values of the plurality of phase differences as a second evaluation parameter further includes: and selecting the average value of the absolute values of the first 5 phase difference values as the second evaluation parameter.
5. The method for evaluating the quality of the floating ground filling screed according to claim 4, wherein the step of drawing an actually measured rebound curve according to the value of each rebound height and comparing the actually measured rebound curve with a standard rebound curve to obtain the evaluation result of the rigidity of the floating ground filling screed further comprises:
determining the rigidity of the floating ground filling leveling layer,
and if the first evaluation parameter is less than or equal to 50mm and the second evaluation parameter is less than or equal to 5 degrees, judging that the rigidity of the floating ground filling leveling layer meets the use requirement.
6. The method for evaluating the quality of the filling and leveling layer of the floating ground according to claim 1, wherein before the step of measuring the value of each rebound height of the impact head which continuously rebounds after the impact head collides with the pressure-bearing air bag, the method further comprises the following steps:
and lifting the impact head to a preset height along a guide rod, and fixing the impact head on the guide rod.
7. The method for evaluating the quality of the filling and leveling layer of the floating ground according to claim 6, wherein before the step of measuring the value of each rebound height of the impact head which continuously rebounds after the impact head collides with the pressure-bearing air bag, the method further comprises the following steps:
and adjusting the verticality of the guide rod to enable the guide rod to be vertically arranged on a bearing device, and loosening the impact head to enable the impact head to freely fall along the guide rod.
8. The method for evaluating the quality of the filling screed of the floating ground according to claim 7, wherein before the step of measuring the depth of the maximum pit formed on the ground after the impact head collides with the ground for a plurality of times to obtain the result of evaluating the mechanical properties of the filling screed of the floating ground, the method further comprises:
and removing the pressure-bearing air bag and the bearing device, lifting the impact head to a preset height along the guide rod, and then enabling the impact head to vertically fall down.
9. The method for evaluating the quality of a floating ground filling screed according to claim 1, wherein the step of integrating the result of evaluating the stiffness of the floating ground filling screed with the result of evaluating the mechanical properties of the floating ground filling screed to further evaluate the quality of the floating ground filling screed further comprises:
and after the rigidity of the filling leveling layer of the floating ground meets the use requirement, evaluating the bearing type of the floating ground according to the depth of the pits.
10. The method for evaluating the quality of a filling screed according to claim 1, further comprising:
according to different material characteristics of the filling leveling layer, a relation curve of impact energy and ground displacement is established by adjusting the weight of the impact head and the falling height of the impact head, and the critical load value bearable by the floating ground filling leveling layer is judged by fitting the relation curve of the impact energy and the ground displacement.
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| CN111829911A (en) * | 2020-07-14 | 2020-10-27 | 北京建筑材料科学研究总院有限公司 | Performance measuring device for filling leveling layer on floating ground |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3826360B2 (en) * | 2003-05-20 | 2006-09-27 | 独立行政法人鉄道建設・運輸施設整備支援機構 | Design method for improved ground |
| CN101413275A (en) * | 2008-10-29 | 2009-04-22 | 山东大学 | Foundation accumulating and sedimentation in-situ simulating apparatus and method under action of traffic loading |
| CN201486105U (en) * | 2009-07-30 | 2010-05-26 | 中建三局建设工程股份有限公司 | Floating cast concrete ground structure |
| CN102539262A (en) * | 2011-12-23 | 2012-07-04 | 舟山市博远科技开发有限公司 | High strength concrete resiliometer and use method thereof |
| CN105203420A (en) * | 2015-10-29 | 2015-12-30 | 长安大学 | Device and method for rapidly measuring drop hammer type cement stabilized base compactness |
| CN106338446A (en) * | 2016-08-02 | 2017-01-18 | 哈尔滨工程大学 | Sealing ring rebound speed test device based on parallel laser |
| CN107842045A (en) * | 2017-11-29 | 2018-03-27 | 长沙宏宇建筑工程检测有限公司 | It is a kind of to shake punching hammer hammer systems and its application method |
| CN107884289A (en) * | 2017-12-12 | 2018-04-06 | 百奥森（江苏）食品安全科技有限公司 | A kind of shock testing device |
| CN207557017U (en) * | 2017-12-12 | 2018-06-29 | 百奥森（江苏）食品安全科技有限公司 | A kind of shock testing device |
| CN109406306A (en) * | 2018-10-24 | 2019-03-01 | 北京延锋北汽汽车内饰件有限公司 | A kind of drop hammer impact testing machine |
| CN209456827U (en) * | 2018-12-26 | 2019-10-01 | 雷帝(中国)建筑材料有限公司 | Floating floor decorating structure |
-
2020
- 2020-07-14 CN CN202010676672.XA patent/CN111829910B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3826360B2 (en) * | 2003-05-20 | 2006-09-27 | 独立行政法人鉄道建設・運輸施設整備支援機構 | Design method for improved ground |
| CN101413275A (en) * | 2008-10-29 | 2009-04-22 | 山东大学 | Foundation accumulating and sedimentation in-situ simulating apparatus and method under action of traffic loading |
| CN201486105U (en) * | 2009-07-30 | 2010-05-26 | 中建三局建设工程股份有限公司 | Floating cast concrete ground structure |
| CN102539262A (en) * | 2011-12-23 | 2012-07-04 | 舟山市博远科技开发有限公司 | High strength concrete resiliometer and use method thereof |
| CN105203420A (en) * | 2015-10-29 | 2015-12-30 | 长安大学 | Device and method for rapidly measuring drop hammer type cement stabilized base compactness |
| CN106338446A (en) * | 2016-08-02 | 2017-01-18 | 哈尔滨工程大学 | Sealing ring rebound speed test device based on parallel laser |
| CN107842045A (en) * | 2017-11-29 | 2018-03-27 | 长沙宏宇建筑工程检测有限公司 | It is a kind of to shake punching hammer hammer systems and its application method |
| CN107884289A (en) * | 2017-12-12 | 2018-04-06 | 百奥森（江苏）食品安全科技有限公司 | A kind of shock testing device |
| CN207557017U (en) * | 2017-12-12 | 2018-06-29 | 百奥森（江苏）食品安全科技有限公司 | A kind of shock testing device |
| CN109406306A (en) * | 2018-10-24 | 2019-03-01 | 北京延锋北汽汽车内饰件有限公司 | A kind of drop hammer impact testing machine |
| CN209456827U (en) * | 2018-12-26 | 2019-10-01 | 雷帝(中国)建筑材料有限公司 | Floating floor decorating structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111829911A (en) * | 2020-07-14 | 2020-10-27 | 北京建筑材料科学研究总院有限公司 | Performance measuring device for filling leveling layer on floating ground |
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