JP2012255305A - Foundation load testing method - Google Patents

Foundation load testing method Download PDF

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Publication number
JP2012255305A
JP2012255305A JP2011129446A JP2011129446A JP2012255305A JP 2012255305 A JP2012255305 A JP 2012255305A JP 2011129446 A JP2011129446 A JP 2011129446A JP 2011129446 A JP2011129446 A JP 2011129446A JP 2012255305 A JP2012255305 A JP 2012255305A
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Japan
Prior art keywords
loading
test
jack
moving
pile
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JP2011129446A
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Japanese (ja)
Inventor
Junji Hamada
純次 濱田
Tomio Tsuchiya
富男 土屋
Takeshi Yamada
毅 山田
Satoshi Omoto
聡 尾本
Tomohiro Tanigawa
友浩 谷川
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Takenaka Komuten Co Ltd
株式会社竹中工務店
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Priority to JP2011129446A priority Critical patent/JP2012255305A/en
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Abstract

PROBLEM TO BE SOLVED: To obtain a foundation load testing method with which workability is improved while ensuring the settlement of a test version.SOLUTION: On a loading jack 20, a main girder 22 is installed via an upper pedestal 28. Both end portions 22A of the main girder 22 are coupled to a pair of a reaction pile 24 via a moving mechanism 30, respectively. The moving mechanism 30 comprises a movable carriage 32, a moving jack 34 and a reaction beam 36. The movable carriage 32 is hung from the both end portions 22A of the main girder 22 by a hanger 38. On the movable carriage 32, the reaction beam 36 is installed via the moving jack 34. The reaction beam 36 is coupled to a pile head 24A of the reaction pile 24 by an anchor 40. The upward movement of the reaction beam 36 is restricted by the anchor 40, and the moving jack 34 is capable of pressing the movable carriage 32 downward by using a reaction force to the reaction beam 36.

Description

  The present invention relates to a foundation loading test method.
  Building foundations that apply vertical loads with multiple loading jacks to concrete test plates installed at the pile heads of test piles in loading tests of foundations that require tests up to large deformation areas such as piled raft foundations The loading test method is known (for example, Patent Document 1). In the building foundation loading test method disclosed in Patent Document 1, when the loading jack has run out of slack, a vertical load is applied to the concrete test plate by a group of loading jacks among a plurality of loading jacks. In the state, the loading jacks of the other groups are contracted. And after inserting a plate between the contracted jack of another group and the foundation, these loading jacks are extended again to apply a vertical load to the concrete test plate. A plate is inserted between the group of loading jacks and the base by the same procedure. In this way, the subsidence amount (deformation amount) of the concrete test plate is secured by compensating for the shortage of the slack of the loading jack by the plurality of plates inserted between the loading jack and the base.
JP 2011-17233 A
  However, in the building foundation loading test method disclosed in Patent Document 1, it takes time to insert a plate between the loading jack and the base.
  An object of the present invention is to obtain a foundation loading test method with improved workability in consideration of the above-mentioned facts while ensuring the amount of settlement of a test plate.
  The foundation loading test method according to claim 1 is installed between a test plate provided on a pile head of a test pile embedded in the ground and a ground reaction force provided above the test plate. A first loading step in which a reaction force is exerted on the ground reaction force body by the loading jack to press the test plate downward, and simultaneously with the first loading step or before and after the first loading step, the ground A second loading step of moving the reaction body downward and pressing the test plate downward via the loading jack described above.
  According to the foundation loading test method of the first aspect, the first loading step and the second loading step performed simultaneously with the first loading step or before and after the first loading step are provided. In the first loading step, the loading jack installed between the test plate and the ground reaction force body takes a reaction force against the ground reaction force body and presses the test plate downward. On the other hand, in the second loading step, the ground reaction force body is moved downward and the test plate is pressed downward via the loading jack.
  In this way, in the second loading step, the ground reaction force member is moved downward, that is, the loading jack is moved downward, so that the stroke shortage of the loading jack is compensated. Accordingly, it is possible to ensure the amount of subsidence (deformation) of the test plate. Moreover, since it is not necessary to insert a plate between the loading jack and the base as in the prior art (for example, Patent Document 1), workability is improved.
  The foundation loading test method according to claim 2 is the foundation loading test method according to claim 1, wherein in the second loading step, the foundation loading test method is connected to the reaction force pile embedded in the ground and the ground reaction force body. The ground reaction force body is moved downward by causing the ground reaction force body to approach the reaction force pile by the moved mechanism.
  According to the foundation loading test method of claim 2, in the second loading step, the ground reaction force body is moved downward by causing the ground reaction force body to approach the reaction force pile by the moving mechanism, The test plate is pressed downward through the loading jack. Therefore, it is possible to ensure the amount of settlement of the test plate.
  Since this invention set it as said structure, workability | operativity can be improved, ensuring the amount of sinking of a test plate.
It is a front view which shows the loading test apparatus in 1st Embodiment of this invention. It is explanatory drawing explaining the loading test method of the foundation concerning 1st Embodiment of this invention, Comprising: It is a front view which shows the state by which the 1st loading process was implemented. It is explanatory drawing explaining the foundation loading test method which concerns on 1st Embodiment of this invention, Comprising: It is a front view which shows the state by which the 2nd loading process was implemented. It is a front view which shows the loading test apparatus in 2nd Embodiment of this invention. It is the top view which looked at the loading test apparatus in 2nd Embodiment of this invention from upper direction. It is explanatory drawing explaining the loading test method of the foundation which concerns on 2nd Embodiment of this invention, Comprising: It is a front view which shows the state by which the 1st loading process was implemented. It is explanatory drawing explaining the loading test method of the foundation concerning 2nd Embodiment of this invention, Comprising: It is a front view which shows the state by which the 2nd loading process was implemented.
  Hereinafter, a basic loading test method according to a first embodiment of the present invention will be described with reference to the drawings.
  First, the configuration of the loading test apparatus will be described.
  FIG. 1 shows a loading test apparatus 10 according to the first embodiment. The loading test apparatus 10 loads a vertical load on a basic test body 12 simulating a piled raft foundation, and measures the loaded vertical load and a settlement amount (deformation amount) of the basic test body 12. The basic test body 12 includes a test pile 14 that simulates a pile, and a test plate 16 that is provided on a pile head 14A of the test pile 14 and simulates a foundation bottom plate such as a foundation slab. The test pile 14 is embedded in the ground 18 so that the pile head 14A does not protrude from the ground surface 18A. The test plate 16 is made of concrete, and is installed on the ground surface 18 </ b> A in a state where the substantially central portion of the lower surface is in contact with the pile head 14 </ b> A of the test pile 14.
  In the present embodiment, the test plate 16 is in contact with the pile head 14A of the test pile 14, that is, the edge between the pile head 14A of the test pile 14 and the test plate 16 is cut. It is also possible to join the pile head 14A of the test pile 14 and the test plate 16.
  The loading test apparatus 10 includes a loading jack 20, a main girder 22 as a ground reaction force body, a pair of reaction force piles 24, and a moving mechanism 30. The loading jack 20 is a general hydraulic jack, and is installed on the test plate 16 via the lower pedestal 26 with the piston extending in the vertical direction. In the present embodiment, nine loading jacks 20 are arranged in a matrix (three vertical and three horizontal) in a plan view so that a vertical load is loaded substantially evenly on the test plate 16. . The loading jack 20 is not limited to a hydraulic type, and various conventionally known jacks such as an air type and a mechanical type (for example, a screw mechanism) can be used.
  A main girder 22 is installed on the loading jack 20 via an upper base 28. Both end portions 22 </ b> A in the longitudinal direction of the main girder 22 are connected to a pair of reaction force piles 24 embedded in the ground 18 via a moving mechanism 30. As a result, the loading jack 20 can apply a reaction force to the main girder 22 and press the basic test body 12 downward.
  The moving mechanism 30 includes a moving table 32, a moving jack 34 as a moving means, and a reaction force beam 36. The movable table 32 is disposed between the both end portions 22A of the main girder 22 and the reaction force pile 24, and is suspended from both end portions 22A of the main girder 22 by a suspension member 38 composed of a PC steel rod, a PC steel wire or the like. It has been. The moving table 32 is disposed at a position away from the pile head 24 </ b> A of the reaction force pile 24, and the moving pace of the moving table 32 is between the moving table 32 and the pile head 24 </ b> A of the reaction force pile 24. Is provided.
  A moving jack 34 is installed on the moving table 32. The moving jack 34 is a general hydraulic jack, and is installed on the moving table 32 with the piston extending in the vertical direction. A reaction force beam 36 is installed on the moving jack 34. The reaction beam 36 is installed between the both end portions 22A of the main girder 22 and the moving jack 34, and a pile head 24A of the reaction force pile 24 by an anchor 40 made of a PC steel rod, a PC steel wire or the like. It is connected to. The upward movement of the reaction beam 36 is restrained by the anchor 40, and the moving jack 34 can apply a reaction force to the reaction beam 36 to press the moving table 32 downward.
  The pair of reaction force piles 24 are embedded in the ground 18 on both sides of the foundation test body 12 and below the both ends 22A of the main girder 22, and are pulled out according to the vertical load loaded on the foundation test body 12. It has sufficient rigidity and strength to resist force.
  Next, an example of the foundation loading test method according to the first embodiment will be described.
  First, as shown in FIG. 1, the basic test body 12 is constructed on the ground 18. Specifically, the test pile 14 is constructed on the ground 18, and the test plate 16 is installed on the test pile 14. At this time, the test plate 16 is installed on the ground surface 18 </ b> A so that the pile head 14 </ b> A of the test pile 14 is in contact with the substantially central portion of the lower surface of the test plate 16. Although not shown, the test plate 16 is provided with a dial gauge type displacement meter that measures the amount of settlement (displacement) of the test plate 16.
  Next, the loading test apparatus 10 is constructed. Specifically, a plurality of loading jacks 20 are installed in a matrix form on the test plate 16 via the lower pedestal 26 in a plan view. In addition, reaction force piles 24 are constructed on the ground 18 on both sides of the basic test body 12. Next, the main girder 22 is installed on the loading jack 20 via the upper base 28. Next, the movable table 32 is suspended from both end portions 22 </ b> A of the main girder 22 by the suspension member 38. At this time, the moving table 32 is arranged at a position away from the pile head 24 </ b> A of the reaction force pile 24, and a moving space of the moving table 32 is provided between the pile head 24 </ b> A of the reaction force pile 24 and the moving table 32. deep. Next, the reaction beam 36 is installed on the moving table 32 via the moving jack 34, and the reaction beam 36 and the pile head 24 </ b> A of the reaction force pile 24 are connected by the anchor 40.
  Although illustration is omitted, each loading jack 20 is provided with an axial force meter such as a load cell for measuring the vertical load loaded on the lower pedestal 26. Similarly, the moving jack 34 is provided with an axial force meter such as a load cell for measuring the vertical load loaded on the moving table 32.
  A loading test is performed using the loading test apparatus 10 constructed as described above. In this loading test, the subsidence amount (deformation amount) of the test plate 16 is measured while measuring the vertical load loaded on the test plate 16 using an unillustrated axial force meter installed on the loading jack 20 and the moving jack 34. A vertical load is loaded on the test plate 16 until becomes a predetermined value or more. Here, in a general pile loading test, the settlement amount (deformation amount) of the pile is set to, for example, 1/10 or more of the pile diameter, whereas the foundation in the present embodiment simulating a piled raft foundation. In the test body 12, not only the test pile 14 but also the vertical bearing force of the test plate 16 is an evaluation target. Therefore, the settlement amount of the basic test body 12 is, for example, 1/10 of the width (length of one side) of the test plate 16. Set as above. For example, when the length of one side of the test plate 16 is 4 m, the amount of settlement of the test plate 16 is 40 cm or more. In this way, the required amount of settlement of the basic test body 12 is larger in this loading test than in a general pile loading test.
In this loading test, first, as shown in FIG. 2, in the first loading process, each loading jack 20 is operated, and the reaction force is applied to the main girder 22 via the upper base 28 to The piston is extended, and a vertical load (arrow V 1 ) is loaded on the test plate 16 via the lower pedestal 26. At this time, the reaction force received by the main girder 22 is transmitted to the reaction force pile 24 through the suspension member 38, the moving table 32, the moving jack 34, the reaction force beam 36, and the anchor 40 (arrow R).
In this state, the amount of subsidence (displacement) of the test plate 16 is measured using a displacement meter (not shown) installed in the test plate 16, and the amount of subsidence of the test plate 16 is a predetermined value (for example, the width of the test plate 16). If it is less than 1/10), the loading jack 20 is actuated again, and a vertical load (arrow V 1 ) is loaded on the test plate 16 via the lower pedestal 26. This procedure is repeated, and a vertical load (arrow V 1 ) is loaded on the test plate 16 until the amount of settlement of the test plate 16 reaches a predetermined value or more.
Here, when the stroke amount of the piston of the loading jack 20 is insufficient before the settling amount of the test plate 16 becomes a predetermined value or more, the process proceeds to the second loading step. In the second loading step, as shown in FIG. 3, the moving jack 34 is actuated, the reaction force is applied to the reaction beam 36, the piston of the moving jack 34 is extended, and the moving table 32 is pushed down (arrow D). ). As a result, the main girder 22 pulled downward by the suspension member 38 approaches the reaction force pile 24, and the upper pedestal 28 and the loading jack 20 are pushed down by the main girder 22, and the test plate 16 is passed through the lower pedestal 26. A vertical load (arrow V 2 ) is loaded on. That is, the main girder 22 moves downward with the operation of the moving jack 34, and the test plate 16 is pressed downward via the loading jack 20. At this time, the reaction force received by the reaction beam 36 is transmitted to the reaction force pile 24 via the anchor 40 (arrow K).
In this state, the amount of subsidence (displacement) of the test plate 16 is measured using a displacement meter (not shown) installed on the test plate 16, and if the amount of subsidence of the test plate 16 is less than a predetermined value, the moving jack 34 is moved. Is operated again, and a vertical load (arrow V 2 ) is loaded on the test plate 16 via the lower pedestal 26. This procedure is repeated, and a vertical load (arrow V 2 ) is loaded on the test plate 16 until the amount of settlement of the test plate 16 reaches a predetermined value or more.
  After the test plate 16 is sunk by a predetermined value or more by the above procedure, the vertical load loaded on the test plate 16 is measured using an unillustrated axial force meter installed on the loading jack 20 and the moving jack 34. The vertical supporting force of the basic test body 12 is calculated from the vertical load and the amount of settlement of the test plate 16.
As described above, in the present embodiment, in the second loading step, the main girder 22 and the loading jack 20 are pushed down by causing the moving mechanism 30 to bring the main girder 22 closer to the reaction force pile 24, and the loading jack 20. A vertical load (arrow V 2 ) is loaded on the test plate 16 via. Thereby, even if it is a case where the stroke amount of the piston of the loading jack 20 is insufficient, the amount of subsidence (deformation amount) of the test plate 16 can be ensured. Further, unlike the prior art (for example, Patent Document 1), it is not necessary to insert a plate between the loading jack and the base, so that workability is improved and various measurement values associated with the insertion of the plate are measured. Errors are reduced.
  Further, in the prior art (for example, Patent Document 1), when the piston of a group of loading jacks is contracted and a plate is inserted between the loading jack and the base, a concrete test is performed using another group of loading jacks. It is necessary to prevent vertical lift (rebound) of the concrete test plate by applying a vertical load to the plate. Therefore, at least two loading jacks are required. On the other hand, in this embodiment, since it is not necessary to contract the piston of the loading jack 20, the problem of the test plate 16 floating due to the contraction of the loading jack 20 does not occur. Therefore, the amount of settlement of the test plate 16 can be secured by at least one loading jack 20.
  Next, a foundation loading test method according to the second embodiment will be described. In addition, about the thing of the structure similar to 1st Embodiment, it attaches | subjects a same sign and abbreviate | omits suitably, and demonstrates.
  First, the configuration of the loading test apparatus will be described.
  FIG. 4 shows a loading test apparatus 50 in the second embodiment. In the loading test apparatus 50, the structure of the moving mechanism 60 is different from the loading test apparatus 10 in the first embodiment. Specifically, the moving mechanism 60 includes a moving jack 64 as a moving means and a reaction beam (sub-girder) 66. The moving jack 64 is installed on both end portions 22 </ b> A of the main girder 22 in the longitudinal direction. A reaction force beam 66 is installed on the moving jack 64.
  As shown in FIG. 5, the reaction beam 66 is installed so as to be substantially orthogonal to the main beam 22. In addition, reaction piles 68 are embedded in the ground 18 below both ends 66 </ b> A in the longitudinal direction of the reaction beams 66, and both ends of the reaction beams 66 are mounted on the pile heads 68 </ b> A of these reaction piles 68. 66A is connected by an anchor 70 made of a PC steel rod, PC steel wire or the like. The anchor 70 restrains the reaction beam 66 from moving upward, so that the moving jack 64 can apply a reaction force to the reaction beam 66 to press the main girder 22 downward. In addition, the reaction force pile 68 has rigidity and proof stress that can sufficiently resist the pulling force according to the vertical load loaded on the foundation test body 12.
  Next, an example of the foundation loading test method according to the second embodiment will be described. In addition, the procedure similar to the basic loading test method according to the first embodiment will be omitted as appropriate.
  First, as shown in FIG. 4, the basic test body 12 is constructed on the ground 18 and the loading test apparatus 50 is constructed. The loading test apparatus 50 installs the moving jacks 64 on both end portions 22 </ b> A of the main girder 22 after installing the main girder 22 on the upper pedestal 28 as in the first embodiment. Next, the reaction beam 66 is installed on the moving jack 64 so as to be substantially orthogonal to the main girder 22, and both ends 66 </ b> A of the reaction beam 66 and the pile head 68 </ b> A of the reaction force pile 68 are connected by the anchor 70. Link.
  Although illustration is omitted, each loading jack 20 is provided with an axial force meter such as a load cell for measuring the vertical load loaded on the lower pedestal 26. Similarly, the moving jack 64 is provided with an axial force meter such as a load cell for measuring a vertical load loaded on the main girder 22.
  A loading test is performed using the loading test apparatus 50 constructed as described above. In this loading test, the amount of subsidence (deformation) of the test plate 16 is measured while measuring the vertical load loaded on the test plate 16 using an unillustrated axial force meter installed on the loading jack 20 and the moving jack 64. A vertical load is loaded on the test plate 16 until becomes a predetermined value or more.
First, as shown in FIG. 6, in the first loading process, each loading jack 20 is operated, and the piston of the loading jack 20 is extended by taking a reaction force on the main girder 22 via the upper base 28. A vertical load (arrow V 1 ) is loaded on the test plate 16 via the lower pedestal 26. At this time, the reaction force received by the main girder 22 is transmitted to the reaction force pile 68 through the moving jack 64, the reaction force beam 66, and the anchor 70 (arrow R).
In this state, the amount of subsidence (displacement) of the test plate 16 is measured using a displacement meter (not shown) installed in the test plate 16, and the amount of subsidence of the test plate 16 is a predetermined value (for example, the width of the test plate 16). If it is less than 1/10), the loading jack 20 is actuated again, and a vertical load (arrow V 1 ) is loaded on the test plate 16 via the lower pedestal 26. This procedure is repeated, and a vertical load (arrow V 1 ) is loaded on the test plate 16 until the amount of settlement of the test plate 16 reaches a predetermined value or more.
Here, when the stroke amount of the piston of the loading jack 20 is insufficient before the settling amount of the test plate 16 becomes a predetermined value or more, the process proceeds to the second loading step. In the second loading step, as shown in FIG. 7, the moving jack 64 is actuated, the reaction force is applied to the reaction force beam 66, the piston of the moving jack 64 is extended, and the main girder 22 is pushed down to reduce the reaction force. Approach the pile 68 (arrow D). As a result, the upper base 28 and the loading jack 20 are pushed down by the main girder 22 and a vertical load (arrow V 2 ) is loaded on the test plate 16 via the lower base 26. That is, the main girder 22 moves downward with the operation of the moving jack 64, and the test plate 16 is pressed downward through the loading jack 20. At this time, the reaction force received by the reaction force beam 36 is transmitted to the reaction force pile 68 through the anchor 70 (arrow K).
In this state, the amount of subsidence (displacement) of the test plate 16 is measured using a displacement meter (not shown) installed in the test plate 16, and if the amount of subsidence of the test plate 16 is less than a predetermined value, the moving jack 64 is moved. Is operated again, and a vertical load (arrow V 2 ) is loaded on the test plate 16 via the lower pedestal 26. This procedure is repeated, and a vertical load (arrow V 2 ) is loaded on the test plate 16 until the amount of settlement of the test plate 16 reaches a predetermined value or more.
  After the test plate 16 is sunk by a predetermined value or more by the above procedure, the vertical load loaded on the test plate 16 is measured using an axial force meter (not shown) installed on the loading jack 20 and the moving jack 64. The vertical supporting force of the basic test body 12 is calculated from the vertical load and the amount of settlement of the test plate 16.
As described above, in the present embodiment, in the second loading process, the main girder 22 and the loading jack 20 are moved downward by moving the main girder 22 closer to the reaction force pile 68 by the moving mechanism 60, so A vertical load (arrow V 2 ) is loaded on the test plate 16 via the jack 20. Thereby, even if it is a case where the stroke amount of the piston of the loading jack 20 is insufficient, the amount of subsidence (deformation amount) of the test plate 16 can be ensured. Therefore, the same effect as the first embodiment can be obtained.
  In the first and second embodiments, the second loading process is performed after the first loading process. However, the present invention is not limited to this. The order of execution of the first loading process and the second loading process is random, and the second loading process may be performed before the first loading process. Moreover, you may perform a 1st loading process and a 2nd loading process simultaneously or in parallel.
  In the first and second embodiments, hydraulic moving jacks 34 and 64 are used as moving means. However, various conventionally known jacks such as an air type and a mechanical type (for example, a screw mechanism) are used. be able to. The moving means is not limited to a jack. For example, in the second embodiment, the main girder 22 may be moved downward by applying tension to the anchor 70 by a turnback or winding device as the moving means. .
  Furthermore, the said 1st, 2nd embodiment is applicable with respect to various test piles, such as a ready-made pile and a cast-in-place pile. Furthermore, the present invention can be applied not only to a new building but also to an existing foundation in a repaired building. In this case, the reaction piles 24 and 68 and the main girder 22 may be constructed by diverting existing ready-made piles or existing beams.
  Furthermore, the first and second embodiments are applicable not only to piled raft foundations but also to general pile foundations. In this case, a loading plate for a loading test provided on the pile head of the test pile corresponds to the test plate in the above embodiment.
  The first and second embodiments of the present invention have been described above. However, the present invention is not limited to such embodiments, and the first and second embodiments and various modifications may be used in appropriate combination. It goes without saying that the present invention can be carried out in various modes without departing from the gist of the present invention.
14 Test pile 14A Pile head 16 Test version 18 Ground 20 Loading jack 22 Main girder (ground reaction force)
24 reaction force pile 30 moving mechanism 50 loading test device 60 moving mechanism 68 reaction force pile

Claims (2)

  1. A reaction force is exerted on the ground reaction force body by a loading jack installed between a test plate provided on the pile head of the test pile buried in the ground and a ground reaction force body provided above the test plate. Taking a first loading step of pressing the test plate downward,
    Simultaneously with the first loading step or before and after the first loading step, the second loading step of moving the ground reaction body downward and pressing the test plate downward via the loading jack,
    A basic loading test method comprising:
  2.   In the second loading step, the ground reaction force body is brought close to the reaction force pile by a moving mechanism connected to the reaction force pile embedded in the ground and the ground reaction force body. The foundation loading test method according to claim 1, wherein the reaction body is moved downward.
JP2011129446A 2011-06-09 2011-06-09 Foundation load testing method Withdrawn JP2012255305A (en)

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CN108978739A (en) * 2018-08-27 2018-12-11 北京工业大学 A kind of experimental provision of analog basis practical distortion
CN110106927A (en) * 2019-05-15 2019-08-09 陕西长地建设工程质量检测有限公司 A kind of pile measurement static-load testing device
CN110905009A (en) * 2019-11-22 2020-03-24 林春伟 8500-ton foundation pile static load test ballast platform with auxiliary buttress and construction method
CN111139879A (en) * 2020-03-20 2020-05-12 淮安市建筑工程质量检测中心有限公司 All-round electromechanical integrated foundation pile bearing capacity detection system and method
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CN103510552B (en) * 2013-10-12 2015-12-02 青岛理工大学 A kind of nonmetal anti-float anchor rod creep test charger
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CN104234095A (en) * 2014-10-13 2014-12-24 青海省建筑建材科学研究院 Steel girder device for static loading experiment
CN104727356A (en) * 2015-03-18 2015-06-24 安徽省建筑工程质量监督检测站 Spoke type force transfer connecting device for foundation pile static load test
CN104929160A (en) * 2015-05-08 2015-09-23 浙江元本检测技术有限公司 Vacuum negative pressure static test pile technical method
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CN105572037A (en) * 2016-01-04 2016-05-11 青岛理工大学 Method for testing relative slippage between nonmetal anti-floating anchor and concrete interface
CN105862944A (en) * 2016-06-08 2016-08-17 国网四川省电力公司经济技术研究院 Full-scale testing apparatus for spread foundations
CN105862943A (en) * 2016-06-08 2016-08-17 国网四川省电力公司经济技术研究院 Concrete expansion foundation experiment device and realization method
CN105951896A (en) * 2016-06-12 2016-09-21 苏州中正工程检测有限公司 Construction foundation-pile static load detection device
CN105951899A (en) * 2016-07-04 2016-09-21 河北基业建筑检测有限公司 Moving machine for detection table of static load of foundation pile
CN106088172A (en) * 2016-08-11 2016-11-09 青岛理工大学 A kind of simultaneous determination grout pile top and the assay device of pile end displacement
CN106284438A (en) * 2016-08-11 2017-01-04 青岛理工大学 A kind of simultaneous determination grout pile top and the test method of pile end displacement
CN106088172B (en) * 2016-08-11 2019-04-02 青岛理工大学 A kind of experimental rig of simultaneous determination bored concrete pile stake top and pile end displacement
CN106320402A (en) * 2016-10-25 2017-01-11 佛山市禅城区建设工程质量安全检测站 Vertical pressure-resistant static load test device for engineering piles
CN106400852A (en) * 2016-10-25 2017-02-15 佛山市禅城区建设工程质量安全检测站 Test method for vertical compressive bearing capacity of single pile
CN106522287A (en) * 2016-10-25 2017-03-22 广西壮族自治区建筑工程质量检测中心 Side pile vertical bearing capacity detecting method
WO2018098963A1 (en) * 2016-12-02 2018-06-07 广东中科华大工程技术检测有限公司 Testing device for static load of foundation pile
CN106854878B (en) * 2016-12-28 2019-11-15 陆剑 Engineering pile foundation dead-load detection resistance support panel assembly and its application method
CN106854878A (en) * 2016-12-28 2017-06-16 陆剑 Engineering pile foundation dead-load detection resistance support panel assembly and its application method
CN107524177A (en) * 2017-09-11 2017-12-29 佛山市公路桥梁工程监测站 A kind of large-tonnage single pile pullout tests system and its application process
CN107524177B (en) * 2017-09-11 2018-08-07 佛山市公路桥梁工程监测站有限公司 A kind of large-tonnage single pile pullout tests system and its application process
CN108560614A (en) * 2018-01-25 2018-09-21 唐山海港地环地质勘察有限公司 It is a kind of to use the detection method for thering is end plate prefabricated tubular pile to make anchoring pile
CN108612136A (en) * 2018-05-25 2018-10-02 深圳市岩土工程有限公司 A kind of the test pile structure and construction method of engineering pile pile extension
CN108978739A (en) * 2018-08-27 2018-12-11 北京工业大学 A kind of experimental provision of analog basis practical distortion
CN110106927A (en) * 2019-05-15 2019-08-09 陕西长地建设工程质量检测有限公司 A kind of pile measurement static-load testing device
CN110905009A (en) * 2019-11-22 2020-03-24 林春伟 8500-ton foundation pile static load test ballast platform with auxiliary buttress and construction method
KR102190633B1 (en) * 2019-12-23 2020-12-14 한국건설기술연구원 Experimental apparatus for preloading method using centrifugal model tester and experimental method for preloading method using same
KR102190632B1 (en) * 2019-12-23 2020-12-14 한국건설기술연구원 Test device for preloading method and test method for preloading method using same
CN111139879A (en) * 2020-03-20 2020-05-12 淮安市建筑工程质量检测中心有限公司 All-round electromechanical integrated foundation pile bearing capacity detection system and method

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