WO2017067097A1 - 实时检测水泥搅拌桩桩体水泥含量的测试系统和测试方法 - Google Patents
实时检测水泥搅拌桩桩体水泥含量的测试系统和测试方法 Download PDFInfo
- Publication number
- WO2017067097A1 WO2017067097A1 PCT/CN2016/070249 CN2016070249W WO2017067097A1 WO 2017067097 A1 WO2017067097 A1 WO 2017067097A1 CN 2016070249 W CN2016070249 W CN 2016070249W WO 2017067097 A1 WO2017067097 A1 WO 2017067097A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cement
- density
- cement slurry
- soil
- electronic control
- Prior art date
Links
- 239000004568 cement Substances 0.000 title claims abstract description 177
- 238000012360 testing method Methods 0.000 title claims abstract description 20
- 238000010998 test method Methods 0.000 title claims abstract description 8
- 239000002002 slurry Substances 0.000 claims abstract description 75
- 239000002689 soil Substances 0.000 claims abstract description 48
- 238000010348 incorporation Methods 0.000 claims description 10
- 238000012545 processing Methods 0.000 claims description 9
- 238000005259 measurement Methods 0.000 claims description 7
- 230000005484 gravity Effects 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 13
- 238000001739 density measurement Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 230000002787 reinforcement Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 230000036571 hydration Effects 0.000 description 2
- 238000006703 hydration reaction Methods 0.000 description 2
- 238000011897 real-time detection Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/46—Concrete or concrete-like piles cast in position ; Apparatus for making same making in situ by forcing bonding agents into gravel fillings or the soil
-
- 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
- G01N33/38—Concrete; Lime; Mortar; Gypsum; Bricks; Ceramics; Glass
- G01N33/383—Concrete or cement
-
- 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
- G01N9/26—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by measuring pressure differences
-
- 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
- G01N9/36—Analysing materials by measuring the density or specific gravity, e.g. determining quantity of moisture
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/10—Miscellaneous comprising sensor means
Definitions
- the invention relates to a test system and a test method for detecting cement content on a construction site, in particular to a test system and a test method for detecting cement content of cement mixing piles in real time, which are suitable for detecting cement mixing piles, high pressure jet grouting piles, etc.
- Cement incorporation belongs to the field of underground engineering.
- a large number of underground projects such as high-rise foundation reinforcement, foundation pit excavation, bridge erection, highway subgrade reinforcement, etc., require grouting reinforcement of the foundation.
- the cement slurry at the construction site needs to be brought back to the laboratory for testing, and the core sample needs to be taken on site when detecting the density of the cement soil.
- the detection means is complicated and the cycle is long, and it is difficult to quickly judge whether there is a problem of cutting corners.
- the construction unit may cut corners during the operation for its own benefit, which poses a huge safety hazard to China's infrastructure. Therefore, there is an urgent need for a technical means for detecting cement incorporation in real time at the construction site.
- the object of the present invention is to provide a test system and a test method for real-time detection of cement content of a pile at a cement mixing pile construction site.
- the invention firstly discloses a test system for real-time detection of cement content of cement mixing piles, the test system specifically comprising a cement slurry density measuring device and a cement incorporation calculation device; wherein the cement slurry density measuring device comprises: a first electronic control center a measuring wire electrically connected to the first electronic control center and a plurality of first pressure sensors, the first electronic control center comprising: a power source, a switch, a voltmeter, a resistor, a data processing module, and a first display module, the measuring wire
- the value of the voltmeter changes when the top of the cement slurry tank falls vertically to contact the cement slurry surface, and the first pressure sensor is disposed at the bottom of the tank of the cement slurry tank, and the pressure
- the test data is fed back to the data processing module and the cement slurry density is calculated and displayed to the first display module;
- the cement incorporation calculation device includes: a second electronic control center and a second pressure sensor electrically connected to the second electronic control center, the second pressure sensor being fixed to an end of the drill bit, the drill bit extending into the to-be-tested In the pile body, the second electronic control center comprises: a data acquisition module, a single chip microcomputer, a second display module and an input module, and the collected data of the second sensor is fed back to the data acquisition module and is calculated by the single chip computer to display the density of the cement soil to The second display module; the cement slurry density, the cement soil density, the water-cement ratio and the soil density input to the input module are calculated by the single-chip computer to display the cement content to the second display module.
- the number of the first pressure sensors is two, four or six, which are uniformly distributed on the bottom wall of the cement slurry tank, and the measurement accuracy can be improved by calculating the mean value.
- the end of the measuring wire is provided with a gravity block, which can ensure that the measuring wire falls vertically from the top of the cement slurry tank, and the reliability of the test result is ensured.
- the present invention also discloses a test method for detecting cement content of cement mixing piles in real time by using the foregoing measuring system, which specifically includes the following steps:
- the second electronic control center emits a stress measurement signal, and collects the return data P i of the second sensor, and collects the data P i+1 once when the spray mixing is uniform, and records the bit lift height Z.
- the cement mixing pile body does not shrink after molding, and has been stirred evenly.
- ⁇ cement soil (m cement slurry + m soil ) / (m cement slurry / ⁇ cement slurry + m soil / ⁇ soil body ) (a)
- the formula for calculating the cement content in cement soil can be calculated:
- the invention has the advantages that the test system of the invention can detect the cement slurry density and the cement soil density in real time on the construction site, thereby detecting the cement incorporation amount in the construction site of the foundation reinforcement process of the underground engineering, and abandoning the traditional site.
- the method of taking the core sample and measuring in the laboratory is convenient, quick, and has a short time period, and has a good supervising effect, and can effectively avoid engineering cuts and materials.
- 1 is a schematic view showing the construction of a cement mixing pile of the present invention
- FIG. 2 is a schematic view showing the application of a cement slurry density measuring device
- FIG. 3 is a schematic view showing the circuit structure of the first electronic control center of the cement slurry density measuring device of FIG. 2.
- the present invention first discloses a test system for detecting cement content in a cement mixing pile 14 in real time.
- the test system specifically includes a cement slurry density measuring device and a cement incorporation calculation device.
- the cement slurry density measuring device can measure the density of the cement slurry, and specifically includes: a first electronic control center 2, a measuring wire 3 electrically connected to the first electronic control center 2, and a plurality of first pressure sensors 5.
- the first electronic control center 2 includes: a power source 6, a switch 7, a voltmeter 8, a resistor 9, a data processing module, and a first display module.
- the measuring wire 3 falls vertically from the top of the cement slurry tank 1 to contact the cement. In the slurry surface, the ends of the circuits A and B of the first electronic control center in Fig. 3 are turned on, and the value of the voltmeter 8 changes (mutation). Further, as shown in FIG. 2, a gravity block 4 is provided at the end of the measuring wire 3, which ensures that the measuring wire 3 falls vertically from the top of the cement slurry tank 1, and the reliability of the test result is ensured.
- the first pressure sensor 5 is disposed on the bottom of the tank of the cement slurry tank 1, and the pressure test data is fed back to the data processing module and the density of the cement slurry is calculated and displayed to the first display module.
- the number of the first pressure sensors 5 is two, four or six, which are uniformly distributed on the bottom wall of the slurry tank 1, and the pressure value of the cement slurry is obtained by calculating the mean value.
- the cement incorporation calculation device can realize the cement soil density measurement and the cement content calculation, and specifically includes: a second electronic control center 10 and a second pressure sensor 11 electrically connected to the second electronic control center 10, wherein the second pressure sensor 11 Fixed to the end of the drill bit 12, the drill bit 12 extends into the pile to be tested, the second electric
- the control center 10 includes: a data acquisition module, a single chip microcomputer, a second display module and an input module, and the collected data of the second sensor is fed back to the data acquisition module and is displayed to the second display module after the cement soil density is calculated by the single chip; the cement paste density and the cement The soil density, the water-cement ratio and the soil density are input into the input module, and the cement content is calculated by the single-chip microcomputer to be displayed to the second display module.
- the connecting coil 13 between the second electronic control center 10 and the second pressure sensor 11 should be long enough to facilitate operation at a long distance, thereby improving safety.
- Cement content ( ⁇ soil- ⁇ cement soil ) ⁇ cement slurry / [(1 + water-cement ratio) ( ⁇ cement soil - ⁇ cement slurry ) ⁇ soil body ] Calculate the cement content and display it on the second display module.
- the test system of the present invention can detect the cement slurry density and the cement soil density in real time on the construction site, thereby detecting the cement incorporation amount in real time in the construction site of the foundation reinforcement process of the underground engineering, which is convenient and quick, has a short time period, and has a very high Good supervision can effectively prevent the project from cutting corners.
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Biochemistry (AREA)
- Pathology (AREA)
- Immunology (AREA)
- General Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Paleontology (AREA)
- Mining & Mineral Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Ceramic Engineering (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Piles And Underground Anchors (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
Abstract
Description
Claims (4)
- 实时检测水泥搅拌桩桩体水泥含量的测试系统,其特征在于,包括:水泥浆密度测量装置和水泥掺入量计算装置;所述水泥浆密度测量装置包括:第一电控中心、与第一电控中心电连接的测量导线和若干第一压力传感器,所述第一电控中心包括:电源、开关、电压表、电阻、数据处理模块及第一显示模块,所述测量导线自水泥浆罐顶部垂直下落至接触水泥浆液面时电压表数值发生变化,所述第一压力传感器布设于水泥浆罐的罐底,压力测试数据反馈至数据处理模块并计算出水泥浆密度后显示至第一显示模块;所述水泥掺入量计算装置包括:第二电控中心和与第二电控中心电连接的第二压力传感器,所述第二压力传感器固定于钻头的端部,钻头伸入待测试的桩体内,所述第二电控中心包括:数据采集模块、单片机、第二显示模块及输入模块,所述第二传感器的采集数据反馈至数据采集模块并经单片机计算出水泥土密度后显示至第二显示模块;水泥浆密度、水泥土密度、水灰比和土体密度输入输入模块后经单片机计算出水泥含量显示至第二显示模块。
- 根据权利要求1所述的实时检测水泥搅拌桩桩体水泥含量的测试系统,其特征在于,所述第一压力传感器的数量为2个、4个或6个,均布于水泥浆罐的底壁上。
- 根据权利要求1所述的实时检测水泥搅拌桩桩体水泥含量的测试系统,其特征在于,所述测量导线的端部设有一重力块。
- 利用权利要求1-3任一项所述的测量系统实时检测水泥搅拌桩桩体水泥含量的测试方法,其特征在于,包括如下步骤:S1、测量水泥浆罐内水泥浆的密度:闭合第一电控中心的开关,将测量导线从水泥浆罐的灌顶竖直落下,当电压表读数变化时测量导线与水泥浆液面接 触,量取测量导线长度h及水泥浆罐的高度H,同时记录第一压力传感器的返回值P,数据处理模块根据公式ρ水泥浆=P/g(H-h)计算得到水泥浆密度,其中g=9.8g/cm3;S2、测量水泥土密度:第二电控中心发射测应力信号,采集第二传感器的返回数据Pi,至某一次喷浆搅拌均匀时再采集一次数据Pi+1,并记录钻头提起高度Z,单片机根据公式ρ水泥土=(Pi+1-Pi)/gZ计算得到水泥土密度,其中S3、输入测量值,计算水泥含量:将步骤S1计算得到的水泥浆密度ρ水泥浆、步骤S2计算得到的水泥土密度ρ水泥土、已知数据水灰比及土体密度输入输入模块中,单片机根据公式水泥含量=(ρ土体-ρ水泥土)ρ水泥浆/[(1+水灰比)(ρ水泥土-ρ水泥浆)ρ土体]计算得到水泥含量并显示至第二显示模块上。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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AU2016343320A AU2016343320B2 (en) | 2015-10-23 | 2016-01-06 | Test system and test method for detecting cement content in pile body of cement mixing pile in real-time |
US15/518,478 US10119240B2 (en) | 2015-10-23 | 2016-01-06 | Test system and test method for detecting cement content of cement mixing pile body in real time |
JP2017520544A JP6437645B2 (ja) | 2015-10-23 | 2016-01-06 | セメント攪拌杭体のセメント含有量のリアルタイムテストシステム及びテスト方法 |
NZ730654A NZ730654A (en) | 2015-10-23 | 2016-01-06 | Test system and test method for detecting cement content of cement mixing pile body in real time |
Applications Claiming Priority (2)
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CN201510532804.0 | 2015-10-23 | ||
CN201510532804.0A CN105113499B (zh) | 2015-10-23 | 2015-10-23 | 实时检测水泥搅拌桩桩体水泥含量的测试系统和测试方法 |
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US (1) | US10119240B2 (zh) |
JP (1) | JP6437645B2 (zh) |
CN (1) | CN105113499B (zh) |
AU (1) | AU2016343320B2 (zh) |
NZ (1) | NZ730654A (zh) |
WO (1) | WO2017067097A1 (zh) |
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2015
- 2015-10-23 CN CN201510532804.0A patent/CN105113499B/zh active Active
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2016
- 2016-01-06 US US15/518,478 patent/US10119240B2/en not_active Expired - Fee Related
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CN114592551A (zh) * | 2022-03-10 | 2022-06-07 | 上海大学 | 一种室内模型试验用的灌注桩一体机 |
CN115659449A (zh) * | 2022-09-08 | 2023-01-31 | 中交一公局第七工程有限公司 | 基于轻质水泥土桩复合地基的计算方法、系统及应用 |
CN115659449B (zh) * | 2022-09-08 | 2024-01-16 | 中交一公局第七工程有限公司 | 基于轻质水泥土桩复合地基的计算方法、系统及应用 |
CN117554432A (zh) * | 2024-01-10 | 2024-02-13 | 中交公路规划设计院有限公司 | 一种高压旋喷桩桩身成桩质量预测系统及方法 |
CN117554432B (zh) * | 2024-01-10 | 2024-03-08 | 中交公路规划设计院有限公司 | 一种高压旋喷桩桩身成桩质量预测系统及方法 |
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JP6437645B2 (ja) | 2018-12-12 |
AU2016343320A1 (en) | 2017-05-18 |
NZ730654A (en) | 2019-02-22 |
JP2017534783A (ja) | 2017-11-24 |
AU2016343320B2 (en) | 2018-11-08 |
CN105113499A (zh) | 2015-12-02 |
CN105113499B (zh) | 2017-03-22 |
US10119240B2 (en) | 2018-11-06 |
US20180023268A1 (en) | 2018-01-25 |
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