CN119374982A - A method for dynamic performance matching of fill parameters detection and compaction quality control - Google Patents

A method for dynamic performance matching of fill parameters detection and compaction quality control Download PDF

Info

Publication number
CN119374982A
CN119374982A CN202411493572.8A CN202411493572A CN119374982A CN 119374982 A CN119374982 A CN 119374982A CN 202411493572 A CN202411493572 A CN 202411493572A CN 119374982 A CN119374982 A CN 119374982A
Authority
CN
China
Prior art keywords
density
barrel
filler
compaction
time
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202411493572.8A
Other languages
Chinese (zh)
Other versions
CN119374982B (en
Inventor
闫宏业
蔡德钩
苏珂
毕宗琦
张千里
尧俊凯
李竹庆
刘晓贺
刘杰
王立军
朱忠林
程远水
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Academy of Railway Sciences Corp Ltd CARS
Railway Engineering Research Institute of CARS
China State Railway Group Co Ltd
Original Assignee
China Academy of Railway Sciences Corp Ltd CARS
Railway Engineering Research Institute of CARS
China State Railway Group Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Academy of Railway Sciences Corp Ltd CARS, Railway Engineering Research Institute of CARS, China State Railway Group Co Ltd filed Critical China Academy of Railway Sciences Corp Ltd CARS
Priority to CN202411493572.8A priority Critical patent/CN119374982B/en
Publication of CN119374982A publication Critical patent/CN119374982A/en
Application granted granted Critical
Publication of CN119374982B publication Critical patent/CN119374982B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B2/00—General structure of permanent way
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/42—Road-making materials
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
    • G01N9/02—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by measuring weight of a known volume
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
    • G01N9/02—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by measuring weight of a known volume
    • G01N2009/022—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by measuring weight of a known volume of solids
    • G01N2009/024—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by measuring weight of a known volume of solids the volume being determined directly, e.g. by size of container

Landscapes

  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Pathology (AREA)
  • Immunology (AREA)
  • Biochemistry (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Medicinal Chemistry (AREA)
  • Food Science & Technology (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)

Abstract

A method for controlling the quality of packing includes such steps as preparing compressed density drum, filling the drum with packing, weighing, arranging sensors on the bottom or top of drum, calculating the density of packing, obtaining the maximum dry density of packing, baking soil sample in oven to obtain the water content of packing, obtaining the compacting coefficient by dynamic density ρ d and the maximum dry density of packing, obtaining the time course curve of dynamic compacting coefficients, and real-time monitoring the variation rule of packing state.

Description

Method for detecting filling body parameters and controlling compaction quality through dynamic performance matching
Technical Field
The invention belongs to the technical field of continuous compaction of high-speed railway roadbeds. In particular, the invention relates to a method for detecting and controlling compaction quality of a filling body parameter with matched dynamic performance.
Background
Along with the increase of mileage of high-speed railway roadbeds in China, the filling engineering quantity of the high-speed railway roadbeds tends to increase, and how to effectively judge the compaction quality of the railway roadbeds at present is a problem which needs to be solved urgently at present. Therefore, in order to ensure the compaction state of the railway roadbed, the control method adopted at the current stage at home and abroad mainly measures the compaction quality of the railway roadbed filler by methods such as K30, evd, ev1, ev2 and the like, but the methods all indirectly represent the compaction quality of the filler by the mechanical property of the filler. The method for directly detecting the compaction quality of the filler is a sand filling method, belongs to a destructive detection method and has long test time. It is not desirable to monitor the density of the filler in real time during vibratory compaction.
Therefore, the invention monitors the relative displacement difference between the top and the bottom of the telescopic sedimentation density barrel in the vibration compaction process by self-making the longitudinal telescopic sedimentation density barrel and arranging acceleration/displacement sensors at the top and the bottom of the density barrel, obtains the initial density of the filler according to the mass and the volume of the filler, obtains the dynamic density change curve of the filler in the density barrel in the vibration compaction process, develops an indoor heavy hammer compaction test and a drying method to measure the water content to obtain a dynamic compaction coefficient, combines the requirements of the high-speed railway design rule on the compaction coefficient of the foundation bed surface layer, the foundation bed bottom layer and the embankment below the foundation bed, and proposes the vibration compaction rolling process to avoid overpressure and underpressure.
Disclosure of Invention
The invention aims to monitor a time course curve of the density change of the packing in a density barrel in real time in the vibration compaction process by adopting a telescopic density barrel method and combining a displacement sensor, thereby controlling the compaction quality of a railway subgrade, and the technical scheme is as follows:
The compressible density barrel comprises a base, a large-diameter cylindrical side surface part and a small-diameter cylindrical side surface part, and is characterized in that roadbed filler is filled between the large-diameter cylindrical side surface part and the small-diameter cylindrical side surface part, roadbed filler is filled in the small-diameter cylindrical side surface, and the compressible function of the density barrel is realized through an annular corrugated part and has the functions of lateral constraint and vertical free compression.
The compressible density barrel comprises a base, a large-diameter cylindrical side surface part and a small-diameter cylindrical side surface part, and is characterized in that roadbed filler is filled between the large-diameter cylindrical inner side surface part and the small-diameter cylindrical outer side surface part, the small-diameter cylindrical inner side surface is filled with roadbed filler, and the compressible functions of a large cylindrical surface and a small cylindrical surface of the density barrel are realized through annular corrugated parts and have the functions of lateral constraint and vertical free compression.
Preferably, the density of the material used for the large and small diameter cylinders is 2.2g/cm3.
The invention also discloses a method for detecting the parameters of the filling body matched with the dynamic performance and controlling the compaction quality, which is a method for controlling the compaction quality based on the real-time detection of the density of the filling material in the vibration rolling process of the railway subgrade, and comprises the following steps:
Step 1, manufacturing a compression density barrel with a size suitable for an on-site filling process aiming at different filler particle grading, wherein the compressible density barrel is formed by a base, a large-diameter cylindrical side surface part, a small-diameter cylindrical side surface part, a large-diameter cylindrical side surface and a small-diameter cylindrical side surface, wherein roadbed filler is filled between the large-diameter cylindrical side surface and the small-diameter cylindrical side surface, roadbed filler is filled in the small-diameter cylindrical side surface, and the compressible function of the density barrel is realized by an annular corrugated part and has lateral constraint and vertical free compression functions;
filling roadbed filling materials into the density barrel, and weighing the total weight M of the filling materials in the density barrel, the height H1 of the density barrel, the small diameter R1 of the density barrel and the large diameter R2 of the density barrel;
And 3, arranging acceleration sensors or displacement sensors, namely A1 and A2, U1 and U2, at the base or top of the density barrel respectively.
Step4, calculating the density of the density barrel;
Step 5, calculating the density of the filler in the vibration compaction process;
Step 6, obtaining the maximum dry density rho dry of the filler in the vibration compaction process through a heavy hammer compaction test;
Step 7, drying the soil sample through an indoor oven to obtain the water content w% of the filler;
step 8, obtaining a compaction coefficient k d＝ρd/(1+w％)ρdry through the dynamic density ρ d and the maximum dry density ρ dry of the filler;
step 9, repeating the steps 4-8 to obtain time course curves of dynamic compaction coefficients of different rolling passes;
Step 10, according to the parts 6.3 and the embankment parts below the 6.4 foundation bed of the high-speed railway design specification, the compaction standards of the foundation bed surface layer, the foundation bed bottom layer and the embankment below the foundation bed are 97%, 95% and 92% respectively;
And 11, comparing the dynamic compaction coefficient k d obtained in the step 8 with the compaction standard required by the standard in the step 9, and monitoring the change rule of the compaction state of the filler in the vibration compaction process in real time, thereby avoiding the under-pressure and over-pressure of the vibratory roller.
Advantageous effects
(1) The method belongs to a nondestructive testing method for packing compaction coefficient in the vibration compaction process;
(2) The method provides a control method for compaction processes of different types of fillers, and effectively avoids overpressure and underpressure in the vibration compaction process;
(3) The method is a direct detection method of the packing compaction coefficient in the vibration compaction process.
Drawings
FIG. 1 is a top view and front view of a compressible density cask of the present invention;
FIG. 2 is a schematic diagram of an acceleration/displacement sensor arrangement method of the present invention;
FIG. 3 is a graph showing the top and bottom acceleration profiles of the density bucket of the present invention;
FIG. 4 is a graph showing the variation time course of the displacement difference between the top and bottom of the density barrel, wherein (a) is a graph showing the displacement time course of the top of the density barrel, (b) is a graph showing the displacement time course of the bottom of the density barrel, and (c) is a graph showing the variation time course of the displacement difference between the top and bottom of the density barrel;
FIG. 5 is a schematic diagram of a first vibration rolling density barrel height variation time course;
FIG. 6 is a graph showing the variation of the packing density in the first vibration rolling density barrel;
FIG. 7 is a graph showing the dry density change time course of the filler in the first vibration rolling density barrel;
FIG. 8 is a graph of the dynamic compaction coefficient variation of the filler in the first vibratory roller compaction density drum;
FIG. 9 is a graph showing the variation of compaction factor with compaction time according to the present invention.
Detailed Description
The following detailed description of the invention is provided in connection with the accompanying drawings that are presented to illustrate the invention and not to limit the scope thereof.
A method for detecting and controlling compaction quality of a filling body parameter matched with dynamic performance comprises the following steps:
And (1) manufacturing compressed density barrels with sizes suitable for on-site filling processes according to different filler particle gradations, wherein the compressible density barrels are formed by a base, a large-diameter cylindrical side surface part (the material density is 2.2g/cm 3), a small-diameter cylindrical side surface part (the material density is 2.2g/cm 3), a gap between the large-diameter cylindrical side surface and the small-diameter cylindrical side surface is filled with roadbed filler, and the compressible function of the density barrels is realized by an annular corrugated part and has lateral constraint and vertical free compression functions.
And (2) filling roadbed filling materials into the density barrel, and weighing the total weight M of the filling materials in the density barrel, the height H1 of the density barrel, the small diameter R1 of the density barrel and the large diameter R2 of the density barrel.
The total weight of the filler in the density barrel is M=100 kg, the height H1 of the density barrel is 0.4M, the small diameter R1 of the density barrel is 0.3M, the large diameter R2 of the density barrel is 0.4M,
And (3) referring to the figure 2, arranging the displacement sensor and the acceleration sensor or the displacement sensor at the base position of the density barrel respectively, wherein the acceleration sensor and the displacement sensor are respectively marked as A1 and A2 and U1 and U2.
And (4) calculating the density of the density barrel in two ways ① through the step (3), monitoring acceleration time course curves of the top and bottom of the density barrel through an acquisition instrument, carrying out secondary integration on the acceleration time course curves to obtain displacement time course curves in the vibration rolling process, and obtaining a relative compression time course curve between the top and bottom of the density barrel between displacement peaks in 0.5s of the top and bottom of the barrel, wherein h1 is recorded. The space position required by the method is convenient for installation, and the volume of the sensor can be ignored for direct density calculation. ② The displacement time course curve of the top and the bottom of the density barrel is monitored by the acquisition instrument, the relative compression time course curve between the top and the bottom of the density barrel is obtained between displacement peaks in 0.5s of the top and the bottom of the barrel, the relative compression time course curve is recorded as h1, but the displacement sensor has large volume, the occupied volume of the filling material of the density barrel is influenced, the volume of the displacement sensor is estimated by a sand filling method, and then the density calculation is carried out. See fig. 3.
And (5) calculating the density of the filler in the vibration compaction process:
Referring to FIG. 4, (a) by monitoring acceleration time curve of bottom and top of density barrel in vibration compaction process, ① density barrel height change time curve H a is difference between density barrel height H1 and relative displacement time curve H1 of bottom and top of density barrel obtained by frequency domain secondary integration, ② initial density is ρ c is filler mass M and filler volume The dynamic density of ③ in vibration process is ρ d＝ρc/H1*Ha.
(B) By monitoring the displacement time-course curve of the bottom and top of the density barrel in the vibration compaction process, ① the density barrel height change time-course curve H a is the difference between the density barrel height H1 and the relative displacement time-course curve H1 of the bottom and top of the density barrel, ② the displacement sensor comprises a bottom fixed disk and a sensor part which occupy the volume and the mass m d of the density barrel which are not negligible, so that the whole volume of the displacement sensor is obtained by a sand filling method. The specific calculation steps are that the known standard sand density is ρ s, a displacement sensor is placed into an empty barrel V with a known volume, standard sand is poured into the empty barrel in a free falling manner until the empty barrel is filled, the displacement sensor is taken out, the residual standard sand mass in the barrel is recorded as M s, then the volume V d of the sensor is V-M s/ρs.③, the initial density of filling is ρ c, and the filling mass (M-M d) and the filling volume areRatio of the two components. ④ The dynamic density during vibration is ρ d＝ρc/H1*Ha. See fig. 5.
Taking the first vibration rolling of the vibratory roller as an example:
the first time vibration rolling density barrel height change time course curve represents that the vibration rolling process can enable the barrel wall of the compressible density barrel to longitudinally displace, so that the packing in the barrel is longitudinally compressed as well, the packing density change time course curve in the first time vibration rolling density barrel represents the packing density real-time change curve in the rolling process, and the purpose of monitoring the packing density in the rolling process is achieved.
And (6) carrying out heavy hammer compaction for 96 times under the same grading curve condition by using an indoor heavy hammer compaction test to obtain the maximum dry density rho dry of the filler.
It was found from engineering experience that the filler had a maximum dry density of 2.3g/cm 3.
And (7) drying the soil sample through an indoor oven to obtain the water content w% of the filler.
It is known from engineering experience that the water content of the filler is generally 4%.
Step (8), obtaining a compaction coefficient k d＝ρd/(1+w％)ρdry through the dynamic density ρ d and the maximum dry density ρ dry of the filler;
The first vibration rolling density barrel is characterized in that the change time course curve of the dry density of the filler is obtained by combining the water content, and then the compaction coefficient is obtained by comparing the change time course curve with the maximum dry density obtained by an indoor test.
The dynamic compaction coefficient change time course curve of the filler in the first vibration rolling density barrel is obtained by comparing the dry density change time course curve actually measured on site with the maximum dry density, and is used for judging the compaction quality of the filler.
And (9) repeating the steps (4) - (8) to obtain time course curves of dynamic compaction coefficients of different rolling passes.
The change rule of the compaction coefficient along with the rolling times is obtained by comparing the dry density results after each rolling time, and the purpose is to obtain the change rule of the compaction coefficient under the condition of different rolling times, and if the change rule reaches the standard value, the rolling can be stopped in time, so that the purpose of dynamic monitoring is achieved.
And (10) according to the section 6.3 of the high-speed railway design rule and the embankment below the 6.4 foundation bed, the compaction standards of the foundation bed surface layer, the foundation bed bottom layer and the embankment below the foundation bed are 97%, 95% and 92%, respectively.
According to a change rule diagram of the compaction coefficient along with the rolling times, the compaction times respectively corresponding to 97%, 95% and 92% of the compaction coefficient are 19 times, 12 times and 7 times. And further accurately obtaining vibration rolling times, and avoiding overvoltage and undervoltage.
And (11) comparing the dynamic compaction coefficient k d obtained in the step (8) with the compaction standard required by the standard in the step (9), and monitoring the change rule of the compaction state of the filler in the vibration compaction process in real time, thereby avoiding the under-pressure and the over-pressure of the vibratory roller.
The production method provided by the invention is simple to operate, strong in feasibility and extremely high in efficiency, and is a direct detection method for compaction coefficients. The invention completes the detection of compaction quality in the construction stage and adjusts the construction working condition in the poor area under the compaction state, thereby avoiding overvoltage and undervoltage, greatly improving the construction quality inspection efficiency of the high-speed railway subgrade and having obvious economic and social benefits.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made therein without departing from the spirit and scope of the invention, which is defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (7)

1.一种可压缩密度桶，包括底座、大直径圆柱侧面部分、小直径圆柱侧面部分，其特征为：大直径圆柱内侧面部分和小直径圆柱外侧面部分之间通过路基填料填充，所述小直径圆柱内侧面通过路基填料填充；所述密度桶的大圆柱面与小圆柱面可压缩功能通过环状波纹部分实现并具有侧向约束以及竖向自由压缩功能。1. A compressible density barrel, comprising a base, a large-diameter cylindrical side portion, and a small-diameter cylindrical side portion, characterized in that: the inner side portion of the large-diameter cylinder and the outer side portion of the small-diameter cylinder are filled with roadbed filler, and the inner side of the small-diameter cylinder is filled with roadbed filler; the compressible function of the large cylindrical surface and the small cylindrical surface of the density barrel is realized by an annular corrugated portion and has lateral constraint and vertical free compression function. 2.根据权利要求1所述的可压缩密度桶，其特征为：所述大、小直径圆柱采用的材料密度为2.2g/cm3。2. The compressible density barrel according to claim 1, characterized in that the material density of the large and small diameter cylinders is 2.2 g/ cm3 . 3.一种动力性能匹配的填筑体参数检测与压实质量控制方法，其特征为：3. A method for dynamic performance matching of fill parameters and compaction quality control, characterized by: 步骤1：针对不同填料颗粒级配制作尺寸适用于现场填筑过程的权利要求1所述的可压缩密度桶；Step 1: manufacturing the compressible density barrel of claim 1 with a size suitable for the on-site filling process according to different filler particle gradations; 步骤2：将密度桶内充满路基填料，并称量密度桶内填料的总重量M、密度桶高度H1、密度桶小直径R1与密度桶大直径R2；Step 2: Fill the density barrel with roadbed filler, and weigh the total weight M of the filler in the density barrel, the height H1 of the density barrel, the small diameter R1 of the density barrel, and the large diameter R2 of the density barrel; 步骤3：在密度桶的底座或顶部位置布置加速度传感器或者位移传感器，记为A1、A2与U1、U2；Step 3: Arrange acceleration sensors or displacement sensors at the base or top of the density barrel, denoted as A1, A2 and U1, U2; 步骤4：计算密度桶的密度；Step 4: Calculate the density of the density bucket; 步骤5：振动压实过程中对填料密度的计算；Step 5: Calculation of filler density during vibration compaction; 步骤6：通过重锤击实试验得到振动压实过程中填料的最大干密度ρdry；Step 6: Obtain the maximum dry density ρdry of the filler during vibration compaction by a heavy hammer compaction test; 步骤7：通过室内烘箱烘干土样得到填料的含水率w％；Step 7: Dry the soil sample in an indoor oven to obtain the moisture content w% of the filler; 步骤8：通过动密度ρd与填料最大干密度ρdry得到动压实系数kd＝ρd/(1+w％)ρdry；Step 8: The dynamic compaction coefficient k d = ρ d /(1+w%)ρ dry is obtained by the dynamic density ρ d and the maximum dry density of the filler ρ dry ; 步骤9：重复上述步骤4—8得到不同碾压遍数的动态压实系数的时程曲线；Step 9: Repeat the above steps 4-8 to obtain the time history curve of the dynamic compaction coefficient with different rolling times; 步骤10：根据《高速铁路设计规范》6.3部分以及6.4基床以下路堤部分可知：基床表层、基床底层以及基床以下路堤的压实标准分别为97％、95％与92％；Step 10: According to Section 6.3 and Section 6.4 of the High-Speed Railway Design Code for Embankments below the Subgrade, the compaction standards for the subgrade surface layer, subgrade bottom layer, and embankments below the subgrade are 97%, 95%, and 92%, respectively; 步骤11：对比步骤8得到的动态压实系数kd与步骤9中规范所要求的压实标准，实时监测振动压实过程中填料的压实状态的变化规律，避免了振动压路机欠压与过压。Step 11: Compare the dynamic compaction coefficient kd obtained in step 8 with the compaction standard required by the specification in step 9, and monitor the change law of the compaction state of the filler during the vibration compaction process in real time to avoid under-pressure and over-pressure of the vibratory roller. 4.根据权利要求3所述的一种动力性能匹配的填筑体参数检测与压实质量控制方法，其特征为：所述可压缩的密度桶由底座、大直径圆柱侧面部分、小直径圆柱侧面部分，大直径圆柱侧面和小直径圆柱侧面之间通过路基填料填充、小直径圆柱侧面内通过路基填料填充。4. A method for detecting parameters of compacted objects and controlling compaction quality with dynamic performance matching according to claim 3, characterized in that the compressible density barrel consists of a base, a large-diameter cylindrical side portion, and a small-diameter cylindrical side portion, the space between the large-diameter cylindrical side portion and the small-diameter cylindrical side portion is filled with roadbed filler, and the inside of the small-diameter cylindrical side portion is filled with roadbed filler. 5.根据权利要求3所述的一种动力性能匹配的填筑体参数检测与压实质量控制方法，其特征为：计算密度桶的密度有两种方式：①通过采集仪监测密度桶桶顶与桶底的加速度时程曲线开展分析，对加速度时程曲线开展二次积分得到振动碾压过程中的位移时程曲线，将桶顶与桶底的0.5s内的位移峰值之间得到密度桶顶面与底面之间的相对压缩量时程曲线，记为h1；②通过采集仪监测密度桶桶顶与桶底的直接监测位移时程曲线，再将将桶顶与桶底的0.5s内的位移峰值之间得到密度桶顶面与底面之间的相对压缩量时程曲线，记为h1。5. According to the method for detecting parameters of filling materials and controlling compaction quality with dynamic performance matching as described in claim 3, it is characterized in that: there are two ways to calculate the density of the density barrel: ① monitor the acceleration time-history curve of the top and bottom of the density barrel through a data acquisition instrument to carry out analysis, perform secondary integration on the acceleration time-history curve to obtain the displacement time-history curve during the vibration rolling process, and obtain the relative compression time-history curve between the top and bottom surfaces of the density barrel between the displacement peak values within 0.5s of the top and bottom of the barrel, which is recorded as h1; ② directly monitor the displacement time-history curve of the top and bottom of the density barrel through a data acquisition instrument, and then obtain the relative compression time-history curve between the top and bottom surfaces of the density barrel between the displacement peak values within 0.5s of the top and bottom of the barrel, which is recorded as h1. 6.根据权利要求5所述的一种动力性能匹配的填筑体参数检测与压实质量控制方法，其特征为：振动压实过程中填料密度的计算方法包括如下步骤：(a)通过监测振动压实过程中密度桶桶底与桶顶的加速度时程曲线：①密度桶高度变化时程曲线Ha为密度桶高度H1与通过频域二次积分得到的密度桶桶底与桶顶的相对位移时程曲线h1之差；②填料初始密度为ρc为填料质量M与填料体积之比，③振动过程中动密度为ρd＝ρc/H1*Ha；6. A method for detecting and controlling compaction quality of a compacted body with dynamic performance matching according to claim 5, characterized in that: a method for calculating the density of filler during vibration compaction comprises the following steps: (a) by monitoring the acceleration time history curves of the bottom and top of the density barrel during vibration compaction: ① the density barrel height change time history curve Ha is the difference between the density barrel height H1 and the relative displacement time history curve h1 between the bottom and top of the density barrel obtained by quadratic integration in the frequency domain; ② the initial density of the filler is ρ c is the mass of the filler M and the volume of the filler ③ The dynamic density during vibration is ρ d = ρ c /H 1 *H a ; (b)通过监测振动压实过程中密度桶桶底与桶顶的位移时程曲线：①密度桶高度变化时程曲线Ha为密度桶高度H1与密度桶桶底与桶顶的相对位移时程曲线h1之差，②由于位移传感器包含底部固定盘与传感器部分所占密度桶体积与质量md不可忽略，因此首先通过灌砂法得到位移传感器整体体积，具体计算步骤为：已知标准砂密度为ρs，将位移传感器放入已知体积的空桶V内，将标准砂自由落体的方式倒入空桶直至倒满空桶，取出位移传感器，记录桶内剩余标准砂质量记为ms，那么传感器的体积Vd为V-ms/ρs；③填料初始密度为ρc为填料质量M-md与填料体积之比；④振动过程中动密度为ρd＝ρc/H1*Ha。(b) By monitoring the displacement time-history curves of the bottom and top of the density barrel during vibration compaction: ① The density barrel height change time-history curve Ha is the difference between the density barrel height H1 and the relative displacement time-history curve h1 between the bottom and top of the density barrel; ② Since the volume and mass m d of the density barrel occupied by the displacement sensor including the bottom fixed plate and the sensor part cannot be ignored, the overall volume of the displacement sensor is first obtained by the sand filling method. The specific calculation steps are as follows: the density of the standard sand is known to be ρ s , the displacement sensor is placed in an empty barrel V of known volume, the standard sand is poured into the empty barrel in a free fall manner until the empty barrel is full, the displacement sensor is taken out, and the mass of the remaining standard sand in the barrel is recorded as m s , then the volume V d of the sensor is Vm s /ρ s ; ③ The initial density of the filler is ρ c, which is the mass of the filler Mm d and the volume of the filler ratio; ④ The dynamic density during vibration is ρ d ＝ρ c /H 1 *H a . 7.一种铁路路基振动碾压过程中基于填料密度实时检测的压实质量控制方法，其特征为：该方法采用权利要求3-6任一所述的一种动力性能匹配的填筑体参数检测与压实质量控制方法。7. A compaction quality control method based on real-time detection of filler density during vibration rolling of railway roadbed, characterized in that: the method adopts a dynamic performance matching fill parameter detection and compaction quality control method as described in any one of claims 3-6.
CN202411493572.8A 2024-10-24 2024-10-24 A method for dynamic performance matching of fill parameters detection and compaction quality control Active CN119374982B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202411493572.8A CN119374982B (en) 2024-10-24 2024-10-24 A method for dynamic performance matching of fill parameters detection and compaction quality control

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202411493572.8A CN119374982B (en) 2024-10-24 2024-10-24 A method for dynamic performance matching of fill parameters detection and compaction quality control

Publications (2)

Publication Number Publication Date
CN119374982A true CN119374982A (en) 2025-01-28
CN119374982B CN119374982B (en) 2025-06-17

Family

ID=94328485

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202411493572.8A Active CN119374982B (en) 2024-10-24 2024-10-24 A method for dynamic performance matching of fill parameters detection and compaction quality control

Country Status (1)

Country Link
CN (1) CN119374982B (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201458151U (en) * 2009-07-28 2010-05-12 陈松 Compression-type garbage bin
CN102514859A (en) * 2011-11-30 2012-06-27 金国鑫 Corrugated garbage bin capable of compressing volume
CN107389449A (en) * 2017-08-03 2017-11-24 中南大学 A kind of filling in mine material compression property experimental provision and its experimental method
CN112067500A (en) * 2020-09-09 2020-12-11 中国铁道科学研究院集团有限公司铁道建筑研究所 Railway coarse-grained soil filler vibration compaction experimental device and experimental method
CN112255064A (en) * 2020-10-26 2021-01-22 中国电建集团成都勘测设计研究院有限公司 Method for testing relative density of coarse soil and measuring and calculating rolling parameters

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201458151U (en) * 2009-07-28 2010-05-12 陈松 Compression-type garbage bin
CN102514859A (en) * 2011-11-30 2012-06-27 金国鑫 Corrugated garbage bin capable of compressing volume
CN107389449A (en) * 2017-08-03 2017-11-24 中南大学 A kind of filling in mine material compression property experimental provision and its experimental method
CN112067500A (en) * 2020-09-09 2020-12-11 中国铁道科学研究院集团有限公司铁道建筑研究所 Railway coarse-grained soil filler vibration compaction experimental device and experimental method
CN112255064A (en) * 2020-10-26 2021-01-22 中国电建集团成都勘测设计研究院有限公司 Method for testing relative density of coarse soil and measuring and calculating rolling parameters

Also Published As

Publication number Publication date
CN119374982B (en) 2025-06-17

Similar Documents

Publication Publication Date Title
CN110726822A (en) A kind of magnesia-solidified soil carbonization process expansion and carbonized soil shear strength test method
CN104931305B (en) The method and experimental rig of a kind of indoor reduced scale experiment relative density sample preparation standard for determining Coarse Aggregate
CN101793638A (en) Method for preparing road base material cylindrical test piece simulating on-site rolling effect
CN111236199A (en) Highway subgrade compaction quality rapid detection method based on dynamic resilience modulus
Yin et al. Accumulated plastic strain behavior of granite residual soil under traffic loading
CN107843711A (en) A kind of dynamic consolidation construction effect detection method based on impact acceleration
CN107101857A (en) Simulate the preparation method of the soil-stone embankment soil mechanics test specimen of on-site rolling effect
CN107807520A (en) A kind of determination Coarse Aggregate fills index and the method for Site quality control
Schulz-Poblete et al. The influence of soil suctions on the deformation characteristics of railway formation materials
CN108797554A (en) A kind of reinforcing test and optimization method based on compacted effect
CN119374982B (en) A method for dynamic performance matching of fill parameters detection and compaction quality control
CN109797729A (en) A kind of roadbed brick slag changes packing course compactness and refers to object detection method
CN101046098B (en) Improved Test Method for Vertical Compression Static Load Test of Single Pile
CN102359914A (en) Vehicle-mounted determinator for rapid detection of roadbed compactness
CN221925859U (en) Compression test device for tire and filler composites
CN115879196B (en) A method for rapidly evaluating the effect of dynamic compaction on coarse fill roadbed reinforcement
CN113624693A (en) A non-destructive testing method for subgrade compaction based on hyperspectral technology
CN210923707U (en) Road surface base course cement stabilized macadam compactness detection device
CN117250318B (en) Test method for determining track bed dirt rate
CN106596909B (en) A model test device for pile-supported reinforced roadbed
CN107764611B (en) Preparation method of high-compaction semicircular bentonite block of buffer material test bench
CN113686727B (en) A variable pressure internal vibration close packing density measurement method
Hu et al. Development and Application of an Instantaneous Impulsion-based Detector to Inspect the Degree of Compaction of the Cement-stabilized Macadam
CN107288117A (en) A kind of method to gangue forced ramming reinforcing
CN110644529A (en) Reverse-wrapping type slag building geotextile bag retaining wall, construction method and application

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant