CN103362151A - Method for detecting prestress concrete pipe pile horizontal stress - Google Patents
Method for detecting prestress concrete pipe pile horizontal stress Download PDFInfo
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- CN103362151A CN103362151A CN201310326927XA CN201310326927A CN103362151A CN 103362151 A CN103362151 A CN 103362151A CN 201310326927X A CN201310326927X A CN 201310326927XA CN 201310326927 A CN201310326927 A CN 201310326927A CN 103362151 A CN103362151 A CN 103362151A
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Abstract
The invention discloses a method for detecting the prestress concrete pipe pile horizontal stress and belongs to the filed of foundation. The method comprises the following steps that a steel bar framework of a prestress concrete pipe pile is manufactured; a concrete prestress sensor precast block is manufactured; the middle part of the steel bar framework is provided with a support element vertical to a vertical shaft of the steel bar framework; the concrete prestress sensor precast block is placed in a sealed box body; concrete is cast into the steel bar framework and is respectively cast to the top and the bottom of the support element, and the prestress concrete pipe pile of a pre-buried concrete prestress sensor is placed in a high-temperature and high-pressure autoclave for maintenance; and the stress of the prestress concrete pipe pile is detected. The method has the advantages that the problem that the concrete prestress sensor cannot be pre-buried in the concrete pipe pile in the prior art is solved, the detection efficiency is accelerated, and the detection precision is improved.
Description
Technical field
The present invention relates to a kind of method that detects the prestressed concrete pipe pile horizontal stress, belong to the foundation field.
Background technology
Along with the development of building, prestressed concrete pipe pile is so that its bearing capacity of single pile is high, the bending resistance crack resistance is good, meet the characteristics such as environmental requirement, pile duration weak point, low cost and used more and more widely.Horizontal static loading experiment is set up for the level bearing performance of measuring prestressed concrete pipe pile provides a method, theoretical ripe method of testing, but because the manufacturing process of prestressed concrete pipe pile often will be passed through the HTHP maintenance, so strain gauge can only be installed behind pile, this is that construction and measurement bring many inconvenience.
Summary of the invention
The present invention has designed and developed a kind of method that detects the prestressed concrete pipe pile horizontal stress.Solve the concrete stress sensor and can't be embedded in problem in the prestressed concrete pipe pile, improved the efficient and the accuracy that detect the prestressed concrete pipe pile horizontal stress.
Technical scheme provided by the invention is:
A kind of method that detects the prestressed concrete pipe pile horizontal stress comprises:
The cage of reinforcement of step 1, making prestressed concrete pipe pile;
Step 2, making concrete stress inductor prefabricated section, the preparation method of described concrete stress inductor prefabricated section is: the prefabricated section mould is set, described prefabricated section mould is discoid, the thickness of described prefabricated section mould is 20cm, the chip section of concrete stress inductor is placed in the described prefabricated section mould, and the test section of described concrete stress inductor is exposed to the outside of described prefabricated section mould, concrete perfusion in the described prefabricated section mould, leave standstill 3h, remove the prefabricated section mould;
Step 3, in described cage of reinforcement, be provided with the support member vertical with the vertical axes of described cage of reinforcement, described support member comprises support and sealing box body, described sealing box body is fixed on described mid-stent, described support is positioned at described cage of reinforcement 1/3 place, described support and the welding of described cage of reinforcement, described sealing box body is made by the heat insulation pressure-resistant material;
Step 4, described concrete stress inductor prefabricated section are placed in the described sealing box body, and the test section of described concrete stress inductor passes the sidewall of described sealing box body, describedly are filled with elastomeric material in sealing box body inside;
Step 5, to described cage of reinforcement placing of concrete, top and bottom difference placing of concrete to described support member, the prestressed concrete pipe pile for preparing pre-buried concrete stress inductor, the prestressed concrete pipe pile of pre-buried concrete stress inductor was placed in the high temperature and high pressure kettle maintenance 3 days, and the temperature of wherein said high pressure-temperature still is that 100 ℃ of pressure are 6 atmospheric pressure;
Step 6, adopt static pressure method that the prestressed concrete pipe pile of pre-buried concrete stress inductor is pressed in the soil 1/2, be that the prestressed concrete pipe pile that is embedded with the concrete stress inductor applies horizontal thrust with jack, described concrete stress inductor and described jack all are electrically connected with control device, wherein said control device is processed the data of described concrete stress inductor transmission and the thrust loading sequence of the described jack of regulation and control, whenever add one-level thrust, described control device is recorded the STRESS VARIATION situation of the prestressed concrete pipe pile of pre-buried concrete stress inductor, described control device is provided with the maximum thrust of jack, and described maximum thrust is 150KN.
Preferably, in the method for described detection prestressed concrete pipe pile horizontal stress, in the described step 5, it is identical with the used concrete model of the described cage of reinforcement of pouring to make the used concrete of concrete stress inductor prefabricated section.
Preferably, in the method for described detection prestressed concrete pipe pile horizontal stress, in the described step 5, adopt the described cage of reinforcement of concrete casting and the described support member of same model.
Preferably, in the method for described detection prestressed concrete pipe pile horizontal stress, the thickness of the top of support member described in the described step 5 and bottom placing of concrete is 9cm.
Preferably, in the method for described detection prestressed concrete pipe pile horizontal stress, control device described in the described step 6 is regulated and control the every 5min of described jack and is strengthened one-level thrust.
Preferably, in the method for described detection prestressed concrete pipe pile horizontal stress, described control device is regulated and control the every 5min of described jack and is strengthened one-level thrust, and every one-level thrust is 15KN.
The present invention has designed a kind of method that detects the prestressed concrete pipe pile horizontal stress.Support member is comprised of support and sealing box body in the present invention, sealing box body is made by the heat insulation pressure-resistant material, guaranteed to be placed on concrete stress sensor in the sealing box body at prestressed concrete pipe pile in high temperature and high pressure kettle during maintenance, be not destroyed, the elastomeric material of in sealing box body, filling simultaneously, can be when the prestressed concrete pipe pile pile sinking, it is damaged owing to excessively shake to have prevented the concrete stress sensor, concrete stress inductor prefabricated section fixing concrete strain gauge, and the chip of protection concrete stress device; Simultaneously the present invention has adopted unidirectional many circulations to add the unloading method, is provided with the jack thrust loading sequence on the controller, has improved the accuracy that detects.
Description of drawings
Fig. 1 is schematic flow sheet of the present invention.
The specific embodiment
The present invention is described in further detail below in conjunction with accompanying drawing, can implement according to this with reference to the manual literal to make those skilled in the art.
As shown in Figure 1, a kind of method that detects the prestressed concrete pipe pile horizontal stress comprises:
The cage of reinforcement of step 1, making prestressed concrete pipe pile;
Step 2, making concrete stress inductor prefabricated section, the preparation method of described concrete stress inductor prefabricated section is: the prefabricated section mould is set, described prefabricated section mould is discoid, the thickness of described prefabricated section mould is 20cm, the chip section of concrete stress inductor is placed in the described prefabricated section mould, and the test section of described concrete stress inductor is exposed to the outside of described prefabricated section mould, concrete perfusion in the described prefabricated section mould, leave standstill 3h, remove the prefabricated section mould;
Step 3, in described cage of reinforcement, be provided with the support member vertical with the vertical axes of described cage of reinforcement, described support member comprises support and sealing box body, described sealing box body is fixed on described mid-stent, described support is positioned at described cage of reinforcement 1/3 place, described support and the welding of described cage of reinforcement, described sealing box body is made by the heat insulation pressure-resistant material;
Step 4, described concrete stress inductor prefabricated section are placed in the described sealing box body, and the test section of described concrete stress inductor passes the sidewall of described sealing box body, describedly are filled with elastomeric material in sealing box body inside;
Step 5, to described cage of reinforcement placing of concrete, watering respectively thickness to the top of described support member and bottom is the 9cm layer of concrete, the prestressed concrete pipe pile for preparing pre-buried concrete stress inductor, the prestressed concrete pipe pile of pre-buried concrete stress inductor was placed in the high temperature and high pressure kettle maintenance 3 days, the temperature of wherein said high pressure-temperature still is that 100 ℃ of pressure are 6 atmospheric pressure
Wherein, it is identical with the used concrete model of the described cage of reinforcement of pouring to make the used concrete of concrete stress inductor prefabricated section, adopts the described cage of reinforcement of concrete casting and the described support member of same model;
Step 6, adopt static pressure method that the prestressed concrete pipe pile of the pre-buried concrete stress inductor after the maintenance of step 5 HTHP is pressed in the soil 1/2, be that the prestressed concrete pipe pile of concrete stress inductor applies horizontal thrust with jack, described concrete stress inductor and described jack all are electrically connected with control device, wherein said control device is processed the data of described concrete stress inductor transmission and the thrust loading sequence of the described jack of regulation and control, what adopt in the present embodiment is that unidirectional many circulations add the unloading method, is specially:
Every 5min strengthens one-level thrust, and every one-level thrust is 15KN, and maximum thrust is 150KN, records the STRESS VARIATION situation of the prestressed concrete pipe pile of pre-buried concrete stress inductor.
The present invention has designed a kind of method that detects the prestressed concrete pipe pile horizontal stress.Support member is comprised of support and sealing box body in the present invention, sealing box body is made by the heat insulation pressure-resistant material, guaranteed to be placed on concrete stress sensor in the sealing box body at prestressed concrete pipe pile in high temperature and high pressure kettle during maintenance, be not destroyed, the elastomeric material of in sealing box body, filling simultaneously, can be when the prestressed concrete pipe pile pile sinking, it is damaged owing to excessively shake to have prevented the concrete stress sensor, concrete stress inductor prefabricated section fixing concrete strain gauge, and the chip of protection concrete stress device; Simultaneously the present invention has adopted unidirectional many circulations to add the unloading method, is provided with the jack thrust loading sequence on the controller, has improved the accuracy that detects.
Although embodiment of the present invention are open as above, but it is not restricted to listed utilization in manual and the embodiment, it can be applied to various suitable the field of the invention fully, for those skilled in the art, can easily realize other modification, therefore do not deviating under the universal that claim and equivalency range limit, the present invention is not limited to specific details and illustrates here and the legend of describing.
Claims (6)
1. a method that detects the prestressed concrete pipe pile horizontal stress is characterized in that, comprising:
The cage of reinforcement of step 1, making prestressed concrete pipe pile;
Step 2, making concrete stress inductor prefabricated section, the preparation method of described concrete stress inductor prefabricated section is: the prefabricated section mould is set, described prefabricated section mould is discoid, the thickness of described prefabricated section mould is 20cm, the chip section of concrete stress inductor is placed in the described prefabricated section mould, and the test section of described concrete stress inductor is exposed to the outside of described prefabricated section mould, concrete perfusion in the described prefabricated section mould, leave standstill 3h, remove the prefabricated section mould;
Step 3, in described cage of reinforcement, be provided with the support member vertical with the vertical axes of described cage of reinforcement, described support member comprises support and sealing box body, described sealing box body is fixed on described mid-stent, described support is positioned at described cage of reinforcement 1/3 place, described support and the welding of described cage of reinforcement, described sealing box body is made by the heat insulation pressure-resistant material;
Step 4, described concrete stress inductor prefabricated section are placed in the described sealing box body, and the test section of described concrete stress inductor passes the sidewall of described sealing box body, describedly are filled with elastomeric material in sealing box body inside;
Step 5, to described cage of reinforcement placing of concrete, top and bottom difference placing of concrete to described support member, the prestressed concrete pipe pile for preparing pre-buried concrete stress inductor, the prestressed concrete pipe pile of pre-buried concrete stress inductor was placed in the high temperature and high pressure kettle maintenance 3 days, and the temperature of wherein said high pressure-temperature still is that 100 ℃ of pressure are 6 atmospheric pressure;
Step 6, adopt static pressure method that the prestressed concrete pipe pile of pre-buried concrete stress inductor is pressed in the soil 1/2, be that the prestressed concrete pipe pile that is embedded with the concrete stress inductor applies horizontal thrust with jack, described concrete stress inductor and described jack all are electrically connected with control device, wherein said control device is processed the data of described concrete stress inductor transmission and the thrust loading sequence of the described jack of regulation and control, whenever add one-level thrust, described control device is recorded the STRESS VARIATION situation of the prestressed concrete pipe pile of pre-buried concrete stress inductor, described control device is provided with the maximum thrust of jack, and described maximum thrust is 150KN.
2. the method for detection prestressed concrete pipe pile horizontal stress as claimed in claim 1 is characterized in that, in the described step 5, it is identical with the used concrete model of the described cage of reinforcement of pouring to make the used concrete of concrete stress inductor prefabricated section.
3. the method for detection prestressed concrete pipe pile horizontal stress as claimed in claim 2 is characterized in that, in the described step 5, adopts the described cage of reinforcement of concrete casting and the described support member of same model.
4. the method for detection prestressed concrete pipe pile horizontal stress as claimed in claim 3 is characterized in that, the thickness of the top of support member described in the described step 5 and bottom placing of concrete is 9cm.
5. the method for detection prestressed concrete pipe pile horizontal stress as claimed in claim 4 is characterized in that, control device described in the described step 6 is regulated and control the every 5min of described jack and strengthened one-level thrust.
6. the method for detection prestressed concrete pipe pile horizontal stress as claimed in claim 5 is characterized in that, described control device is regulated and control the every 5min of described jack and strengthened one-level thrust, and every one-level thrust is 15KN.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310326927.XA CN103362151B (en) | 2013-07-30 | 2013-07-30 | Method for detecting prestress concrete pipe pile horizontal stress |
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| CN201310326927.XA CN103362151B (en) | 2013-07-30 | 2013-07-30 | Method for detecting prestress concrete pipe pile horizontal stress |
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| CN103362151B CN103362151B (en) | 2015-02-18 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103882894A (en) * | 2014-04-10 | 2014-06-25 | 山东电力工程咨询院有限公司 | Prestressed concrete pipe pile horizontal bearing characteristic test model and test method |
| CN107152040A (en) * | 2017-05-17 | 2017-09-12 | 吉林建筑大学 | Level and demifacet stake mini Mod experiment loading unit under vertical load collective effect |
| CN116001080A (en) * | 2023-02-20 | 2023-04-25 | 连云港先至远大建筑工业有限公司 | Prefabricated pc component production device and method with automatic quality inspection function |
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| CN102011415A (en) * | 2010-10-26 | 2011-04-13 | 珠海市建设工程质量监督检测站 | Method and device for detecting strain/stress of pile body by prestress pipe file field static load test |
| CN102127917A (en) * | 2010-12-03 | 2011-07-20 | 中国民航大学 | Low-strain testing device for detecting integrity of ultralong bored concrete pile |
| JP4847107B2 (en) * | 2005-11-21 | 2011-12-28 | ジャパンパイル株式会社 | Pile dynamic horizontal loading test method and dynamic horizontal loading test device |
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2013
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Patent Citations (6)
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| JPH10239262A (en) * | 1997-02-26 | 1998-09-11 | Gio Top:Kk | Method for diagnosing damage of pile and underground pile whose damage can be detected |
| GB2346917A (en) * | 1998-12-22 | 2000-08-23 | Robert Tjhing Bo Oei | Piling system with continuous load measurement |
| JP4847107B2 (en) * | 2005-11-21 | 2011-12-28 | ジャパンパイル株式会社 | Pile dynamic horizontal loading test method and dynamic horizontal loading test device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103882894A (en) * | 2014-04-10 | 2014-06-25 | 山东电力工程咨询院有限公司 | Prestressed concrete pipe pile horizontal bearing characteristic test model and test method |
| CN107152040A (en) * | 2017-05-17 | 2017-09-12 | 吉林建筑大学 | Level and demifacet stake mini Mod experiment loading unit under vertical load collective effect |
| CN116001080A (en) * | 2023-02-20 | 2023-04-25 | 连云港先至远大建筑工业有限公司 | Prefabricated pc component production device and method with automatic quality inspection function |
| CN116001080B (en) * | 2023-02-20 | 2023-09-08 | 连云港先至远大建筑工业有限公司 | Prefabricated pc component production device and method with automatic quality inspection function |
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| CN103362151B (en) | 2015-02-18 |
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Effective date of registration: 20220112 Address after: 061001 No. 28, Yuhe Road, Yunhe District, Cangzhou City, Hebei Province Patentee after: Chemical industry first survey and Design Institute Co.,Ltd. Address before: 061001 No. 28, Yuhe Road, Yunhe District, Cangzhou City, Hebei Province Patentee before: CHINA CHEMICAL ENGINEERING FIRST GEOTECHNICAL ENGINEERING Corp.,Ltd. |