CN112814050A - Intelligent monitoring device for precast tubular pile construction and installation method thereof - Google Patents
Intelligent monitoring device for precast tubular pile construction and installation method thereof Download PDFInfo
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- CN112814050A CN112814050A CN202110161567.7A CN202110161567A CN112814050A CN 112814050 A CN112814050 A CN 112814050A CN 202110161567 A CN202110161567 A CN 202110161567A CN 112814050 A CN112814050 A CN 112814050A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
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- 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
- E02D5/24—Prefabricated piles
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- General Engineering & Computer Science (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
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Abstract
The invention discloses a prefabricated pipe pile construction intelligent monitoring device and an installation method thereof, wherein the prefabricated pipe pile construction intelligent monitoring device comprises a pipe pile, an intelligent box, an oil pipe and an oil pressure sensor intelligent transmitter; a sectional type oil pipe is arranged in the tubular pile, and the length of the sectional type oil pipe is basically consistent with that of the tubular pile; the oil pipe is provided with a stop valve and a joint, so that the stop valve and the joint are convenient to connect in a segmented manner during construction, and the oil pipe is connected with the intelligent sending instrument of the oil pressure sensor; the intelligent box top is connected with the oil pump through a stop valve and is fixed at a tubular pile section joint or a pile bottom. The invention can wirelessly and intelligently measure the pile pressing force and the resistance at the joint of the pile section or the pile bottom in the whole process of the construction of the precast tubular pile, and can monitor the resistance of the pile section or the pile bottom for a long time after the construction of the precast tubular pile is finished.
Description
Technical Field
The invention belongs to the field of building construction, and particularly relates to an intelligent monitoring device and method for precast tubular pile construction.
Background
At present, pile foundation engineering is mainly divided into concrete and steel structure piles according to composition materials, and the concrete piles can be mainly divided into in-situ cast piles and factory prefabricated piles; open caisson and steel structural pile are also a special type of precast pile. The precast pile has more structural stability than a concrete cast-in-place pile, and the periphery of the precast pile is in close contact with a foundation in construction, so that the construction dynamic and static mechanical characteristics of the pile by soil can be more directly reflected.
The precast pile construction power comprises loading force of a single-pile static load destructive test, wherein the loading force is destructive bearing capacity of a pile to soil in a broad sense, relative relevance exists between the loading force and the loading force, the loading force and the destructive bearing capacity are analyzed from the angle of deformation, dynamic and static components possibly exist, the total bearing capacity effect of pile side resistance and pile end resistance is realized in a general sense, and the sizes of two force values of the pile side resistance and the pile end resistance are not suitable for distinguishing and determining. In order to research and test the exertion of the pile side and pile end resistance of each soil layer under a certain specific pile length condition, some static load test research subjects can embed an internal force test element in a pile body, and the internal force of the pile body can be obtained through testing the internal force or strain of a steel bar and through the conversion of the sectional area and the elastic modulus of the steel bar and the pile body. The installation requirement of the test element is high, the theoretical derivation process is long, and the uncertainty condition is multiple, so the accuracy is poor, and especially the installation of the test element in the precast pile is more difficult.
The conventional precast pile construction includes static pressure method, hammering and vibration penetration method, and there are various construction record data as important evaluation basis for design review and quality acceptance, and most data are recorded manually, and most data are not detailed enough, such as pile pressing force, penetration degree, hammering number, etc.
Disclosure of Invention
The invention aims to provide a prefabricated pipe pile construction intelligent monitoring device, wherein an intelligent box is arranged at a pile section joint or a pile bottom of a prefabricated pipe pile, the prefabricated pipe pile is pressurized to an initial amount through an oil pump before use, an oil pressure sensor intelligent transmitter is arranged at the top of a constructed pile, hydraulic data is sent to a terminal at regular time, and an oil pressure sensor intelligent transmitter for construction pile pressing force is arranged in a pile pressing hydraulic pipeline, so that the intelligent monitoring of construction power big data and the detection data of the intelligent box after the construction are compared, and the dynamic and static mechanics application research of the pile is comprehensively promoted.
The invention discloses a device and a method for intelligently monitoring the construction of a precast tubular pile.
The invention can embed a plurality of intelligent boxes, pipelines and wireless communication equipment at the construction joint of the pile body of the tubular pile and the pile bottom respectively.
The invention discloses a prefabricated pipe pile construction intelligent monitoring device which comprises a pipe pile, an intelligent box, an oil pipe and an oil pressure sensor intelligent transmitter; a sectional type oil pipe is arranged in the tubular pile, and the length of the sectional type oil pipe is basically consistent with that of the tubular pile; the oil pipe is provided with a stop valve and a joint, so that the stop valve and the joint are convenient to connect in a segmented manner during construction, and the oil pipe is connected with the intelligent sending instrument of the oil pressure sensor; the intelligent box top is connected with the oil pump through a stop valve and is fixed at a tubular pile section joint or a pile bottom.
The intelligent box is poured in concrete or wrapped in a steel plate pile casing, or the upper part and the lower part of the intelligent box are provided with bearing plates with the same pile diameter, and the middle part is poured with concrete and is used in a superposition mode.
The intelligent box is preferably a load box and comprises a bag type load box and an oil cylinder type load box.
The invention also discloses an installation method of the intelligent monitoring device for the precast tubular pile construction, which comprises the following steps:
according to the measured pile position, after the pile press is in place, firstly, a first intelligent transmitter of a pile press force oil pressure sensor is installed in a construction oil way joint of the pile press; and secondly, completing initial pressurization of the intelligent box to an initial state, wherein the method comprises the steps of firstly opening a first stop valve at the top of the intelligent box on the ground, connecting the first stop valve with an oil pump, pressurizing the intelligent box, opening the intelligent box to an initial pressurized position, and closing the first stop valve.
The method comprises the following steps of (I) installing an intelligent box at the bottom of a pile:
the first step is as follows: inserting an oil pipe into the first section of pipe pile on the ground, and fixedly placing the first section of pipe pile on a support at the top of the first section of pipe pile; a second stop valve is mounted on the oil pipe and connected with a second intelligent sending instrument of the oil pressure sensor, and the second stop valve is in an open state;
the second step is that: after the first section of pipe pile is lifted and before the pipe bottom is aligned to the intelligent box, the lower connector of the oil pipe is butted with the first stop valve, and then the first stop valve is opened, and a pipe bottom steel plate of the first section of pipe pile is welded with the top of the intelligent box, so that the intelligent box and the first section of pipe pile are fixed to form the intelligent pile at the pile bottom;
the third step: and normal pile pressing construction can be carried out.
(II) installing an intelligent box at the pile section joint:
the first step is as follows: after the first pipe pile section is constructed in place, inserting an oil pipe into the second pipe pile section on the ground, and fixedly placing the second pipe pile section on a support at the top of the second pipe pile section; a second stop valve is arranged on the oil pipe and connected with the intelligent oil pressure sensor sending instrument, and the second stop valve is in an open state;
the second step is that: aligning the pipe bottom of a second section of pipe pile to the front of the intelligent box, butting a lower connector of a pipeline with a connector of a first stop valve, and then opening the first stop valve, and welding and fixing the pipe bottom of the second section of pipe pile with the top of the intelligent box to form an intelligent pile in the pile;
the third step: and normal pile pressing construction can be carried out.
When this section of tubular pile of normal pile-pressing construction, send the oil pressure that the appearance can respond to automatic monitoring pile-pressing hydro-cylinder equipment, intelligent case respectively through oil pressure sensor wisdom in step to show regularly taking notes pile-pressing power and pile foundation power and tubular pile joint power in output terminal.
When the section of pipe pile is constructed to the bottom of the pile pressing oil cylinder, closing the second stop valve at the top of the pipe pile, removing an oil pipe of the second stop valve, and repeating the steps of mounting and construction monitoring according to the first step to the third step.
The invention has the beneficial effects that:
(1) by intelligently monitoring the pile-pressing force construction of the precast tubular pile, a pile-top pile-pressing force exertion curve under different penetration depth conditions is provided, detailed data and reference are provided for design bearing layer selection and pile sinking capability, a basis is provided for bearing force construction quality control and acceptance check, and reference is provided for determination of a survey soil layer;
(2) by intelligently monitoring the construction of the pile bottom of the precast tubular pile, a play curve of pile bottom resistance under different penetration depth conditions is provided, dynamic and static parameters of survey design of pile end resistance bearing capacity of each soil layer are further provided, and detailed data and reference can be directly provided for selection of a design bearing layer and division and judgment of survey soil layers;
(3) by intelligently monitoring the construction of joints of the precast tubular pile sections, providing a comprehensive exertion curve of the resistance of the lower side end of the test pile section under the condition of soil plug with different soil penetration depths;
(4) the moderate and long term monitoring of the resistance at the joint of the pile section or the pile bottom after pile forming is tested provides more valuable research on creep and creep effects related to the bearing capacity and deformation of the pile;
(5) the static load test of the pile section is tested after the pile is formed, the compression resistance and the pulling resistance bearing capacity of the pile section are further provided, and a basis and a reference are provided for design and quality acceptance;
(6) the problem that the resistance of the pile side and the pile bottom cannot be distinguished and evaluated only by a small number of pile pressing force values or traditional static load test data in the traditional method is solved;
(7) the smart box can be actively loaded to determine the static and dynamic parameters of the pile side and pile end resistances and the interaction of the resistances.
Drawings
FIG. 1 shows an intelligent box at the bottom of a pile;
fig. 2 is a pile section joint intelligent box.
Numbering in the figures: 1-a first section of tubular pile, 2-a second section of tubular pile, 3-a first stop valve, 4-a pile pressing machine, 5-an oil pipe, 6-a first oil pressure sensor intelligent transmitter, 7-a second oil pressure sensor intelligent transmitter, 8-an intelligent box, 9-a second stop valve and 10-a support.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Example 1
A prefabricated tubular pile construction intelligent monitoring device comprises a tubular pile, an intelligent box 8, an oil pipe 5 and an oil pressure sensor intelligent transmitter; a sectional type oil pipe 5 is arranged in the tubular pile, and the length of the sectional type oil pipe is basically consistent with that of the tubular pile; the oil pipe 5 is provided with a stop valve and a joint, so that the stop valve and the joint are convenient to connect in a segmented manner during construction, and the oil pipe 5 is connected with an intelligent transmitter of an oil pressure sensor; the top of the intelligent box 8 is connected with an oil pump through a stop valve and is fixed at a tubular pile section joint or a pile bottom.
The intelligent box is preferably a load box, and in use, the load box is poured in concrete or wrapped in a steel plate pile casing, or bearing plates with the same pile diameter are arranged on the upper part and the lower part of the load box, and concrete is poured in the middle part for superposition use.
Example 2
The installation method of the intelligent monitoring device for the precast tubular pile construction comprises the following specific steps of:
(1) according to the measured pile position, after the pile pressing machine 4 is in place, firstly, a pile pressing force oil pressure sensor intelligent transmitter I6 is installed in a construction oil way joint of the pile pressing machine 4; then, the initial pressurization of the smart box 8 is completed to the initial state. The pressurizing method comprises the following steps: on the ground, opening a first stop valve 3 at the top of the intelligent box 8, connecting the first stop valve 3 with an oil pump, pressurizing the intelligent box 8 to open the intelligent box 8 to an initial pressurized position, and closing the first stop valve 3;
(2) inserting an oil pipe 5 into the first section of tubular pile 1 on the ground, and fixedly placing the first section of tubular pile on a support 10 at the top of the first section of tubular pile; a second stop valve 9 is mounted on the oil pipe 5 and connected with a second intelligent oil pressure sensor sending instrument 7, and the second stop valve 9 is in an open state;
(3) after the first section of tubular pile 1 is lifted, before the bottom of the pipe is aligned to the intelligent box 8, the lower connector of the oil pipe 5 is butted with the first stop valve 3, and then the first stop valve 3 is opened, and a steel plate at the bottom of the first section of tubular pile 1 is welded with the top of the intelligent box 8, so that the intelligent box 8 and the first section of tubular pile 1 are fixed to form an intelligent pile at the bottom of the pile, and normal pile pressing construction can be performed.
Example 3
The installation method of the intelligent monitoring device for the precast tubular pile construction comprises the following specific steps of:
(1) according to the measured pile position, after the pile pressing machine 4 is in place, firstly, a pile pressing force oil pressure sensor intelligent transmitter I6 is installed in a construction oil way joint of the pile pressing machine 4; then, the initial pressurization of the smart box 8 is completed to the initial state. The pressurizing method comprises the following steps: on the ground, opening a first stop valve 3 at the top of the intelligent box 8, connecting the first stop valve 3 with an oil pump, pressurizing the intelligent box 8 to open the intelligent box 8 to an initial pressurized position, and closing the first stop valve 3;
(2) after the first section of tubular pile 1 is constructed in place, inserting an oil pipe 5 into the second section of tubular pile 2 on the ground, and fixedly placing the second section of tubular pile on a support 10 at the top of the second section of tubular pile; a second stop valve 9 is mounted on the oil pipe 5 and connected with a second intelligent sending instrument 7 of the oil pressure sensor, and the second stop valve 9 is in an open state;
(3) before 2 tube bottoms of second section tubular pile aim at intelligent case 8, open stop valve 3 after the lower part interface of pipeline 5 docks with the interface of stop valve 3, the top welded fastening of 2 tube bottoms of second section tubular pile and intelligent case 8 constitutes intelligent stake in the stake, can normally press the stake construction.
Claims (7)
1. The utility model provides a precast tubular pile construction wisdom monitoring devices which characterized in that: the intelligent pipe pile hydraulic transmission instrument comprises a pipe pile, an intelligent box, an oil pipe and an intelligent oil pressure sensor sending instrument; a sectional type oil pipe is arranged in the tubular pile, and the length of the sectional type oil pipe is basically consistent with that of the tubular pile; the oil pipe is provided with a stop valve and a joint, so that the stop valve and the joint are convenient to connect in a segmented manner during construction, and the oil pipe is connected with the intelligent sending instrument of the oil pressure sensor; the intelligent box top is connected with the oil pump through a stop valve and is fixed at a tubular pile section joint or a pile bottom.
2. The intelligent monitoring device for precast tubular pile construction according to claim 1, characterized in that: the intelligent box is poured in concrete or wrapped in a steel plate casing.
3. The intelligent monitoring device for precast tubular pile construction according to claim 1, characterized in that: the upper part and the lower part of the intelligent box are provided with bearing plates with the same pile diameter, and the middle part is poured with concrete and used in an overlapping way.
4. The intelligent monitoring device for precast tubular pile construction according to claim 1, characterized in that: the intelligent box is a load box and comprises a bag type load box and an oil cylinder type load box.
5. The installation method of the intelligent monitoring device for the precast tubular pile construction is characterized in that an intelligent box is installed at the bottom of a tubular pile, and the method comprises the following specific steps:
(1) according to the measured pile position, after the pile press is in place, firstly, a first intelligent transmitter of a pile press force oil pressure sensor is installed in a construction oil way joint of the pile press; secondly, completing the initial pressurization of the intelligent box to an initial state;
(2) inserting an oil pipe into the first section of pipe pile on the ground, and fixedly placing the first section of pipe pile on a support at the top of the first section of pipe pile; a second stop valve is mounted on the oil pipe and connected with a second intelligent sending instrument of the oil pressure sensor, and the second stop valve is in an open state;
(3) after the first section of pipe pile is lifted, before the pipe bottom is aligned to the intelligent box, the first stop valve is opened after the lower connector of the oil pipe is butted with the first stop valve, and the pipe bottom steel plate of the first section of pipe pile is welded with the top of the intelligent box, so that the intelligent box and the first section of pipe pile are fixed to form the intelligent pile at the pile bottom, and normal pile pressing construction can be realized.
6. The installation method of the intelligent monitoring device for the precast tubular pile construction is characterized in that an intelligent box is installed at a joint of a tubular pile section, and the method comprises the following specific steps:
(1) according to the measured pile position, after the pile press is in place, firstly, a first intelligent transmitter of a pile press force oil pressure sensor is installed in a construction oil way joint of the pile press; secondly, completing the initial pressurization of the intelligent box to an initial state;
(2) after the first pipe pile section is constructed in place, inserting an oil pipe into the second pipe pile section on the ground, and fixedly placing the second pipe pile section on a support at the top of the second pipe pile section; a second stop valve is arranged on the oil pipe and connected with the intelligent oil pressure sensor sending instrument, and the second stop valve is in an open state;
(3) before the pipe bottom of the second section of pipe pile is aligned to the intelligent box, the first stop valve is opened after the lower connector of the pipeline is in butt joint with the connector of the first stop valve, the pipe bottom of the second section of pipe pile and the top of the intelligent box are welded and fixed, the intelligent pile in the pile is formed, and pile pressing construction can be performed normally.
7. The installation method according to claim 5 or 6, wherein the pressurizing method for the smart box in the step (1) is: on the ground, opening a first stop valve at the top of the intelligent box, connecting the first stop valve with an oil pump, pressurizing the intelligent box to open the intelligent box to an initial pressurized position, and closing the first stop valve.
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| CN202110161567.7A CN112814050B (en) | 2021-02-05 | 2021-02-05 | Intelligent monitoring device for precast tubular pile construction and installation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113309154A (en) * | 2021-06-02 | 2021-08-27 | 国网江苏省电力工程咨询有限公司 | Intelligent sensing joint and method for stress of precast tubular pile |
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| US20110219759A1 (en) * | 2008-02-29 | 2011-09-15 | Blitz Jonathan N | Single-Axis Drive System and Method |
| CN108716226A (en) * | 2018-05-02 | 2018-10-30 | 广东天信电力工程检测有限公司 | A kind of improved club-footed pile self-balanced static-load testing device and method |
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