CN109138010B - Pile body fixing device for indoor pile soil model test - Google Patents
Pile body fixing device for indoor pile soil model test Download PDFInfo
- Publication number
- CN109138010B CN109138010B CN201811314166.5A CN201811314166A CN109138010B CN 109138010 B CN109138010 B CN 109138010B CN 201811314166 A CN201811314166 A CN 201811314166A CN 109138010 B CN109138010 B CN 109138010B
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- pile
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- fixing ring
- fixing device
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- 239000002689 soil Substances 0.000 title claims abstract description 47
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 3
- 238000005429 filling process Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 13
- 238000009412 basement excavation Methods 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
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
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention relates to a pile body fixing device for an indoor pile soil model test, which comprises at least one pair of model pile locating arms, wherein one end of each model pile locating arm is provided with a side wall connecting structure used for being connected with the side wall of a corresponding model box, the other end of each model pile locating arm is provided with at least one pile fixing ring which is used for being matched and clamped in a C-shaped structure of a corresponding model pile, and each model pile locating arm is provided with an up-down telescopic adjusting section used for adjusting the height of each pile fixing ring. The invention provides a pile body fixing device for an indoor pile soil model test, which can position a model pile in the soil filling process.
Description
Technical Field
The invention relates to a pile body fixing device for an indoor pile soil model test in indoor model test equipment.
Background
Urban construction typically encounters complex foundation pit conditions, such as the effects of adjacent existing building foundations. It is sometimes necessary to study and analyze the supporting structure deformation caused by foundation pit excavation and the interaction of the composite foundation through indoor model tests, but there are several difficulties in pile body arrangement in pile soil simulation: 1. if the test soil is sandy soil, marking is not performed well in sandy soil, so that the position of the pile end is not conveniently positioned; 2. in the process of filling soil, it is difficult to ensure that the pile body does not deviate; 3. in other model tests for researching cohesive soil, the method for setting the model piles is to excavate a hole with the diameter similar to that of the pile after filling the soil, insert the pile body and fill the pile body, but once the pile selected by the test is a slender pile, the hole excavation is very inconvenient, and the soil is disturbed in the process of excavating the soil.
In scientific research of civil engineering, indoor model tests are an important means and method. The research of pile-soil interaction is a research type frequently encountered in model tests, the precision of pile positions and the perpendicularity of pile bodies in the tests are one of key factors for ensuring the success of the tests, in the actual test process, the fixing method of the pile bodies can be influenced by soil properties, and particularly when long and thin piles are adopted in the tests, the fixing of the pile bodies is more difficult. The existing method for burying the slender piles in the cohesive soil mainly adopts a method of filling soil first and then digging holes, and has three difficulties: firstly, the slender hole is excavated with great difficulty, and the precision of the pile position and the perpendicularity of the pile body are difficult to ensure; secondly, the excavation process can cause the influence to the soil body around, and when the pile body is more at last, say 25 piles, under this kind of circumstances, the work load of excavation is great, can influence the test progress. In addition, the method for fixing the pile bodies in the free-flowing soil bodies such as dry sand is less mentioned, and the pile bodies in the free-flowing soil bodies such as sand are more difficult to fix than cohesive soil, and mainly comprises three aspects: 1. when the pile body is fixed before filling, the pile body cannot be marked due to the fluidity of the loose soil, so that the pile position deviation is larger; 2. after the pile position is determined, the pile body is offset in the soil filling process, and the position and the perpendicularity of the pile body cannot be ensured; 3. because of the fluid characteristics of the bulk soil, the pile body cannot be placed in a mode of filling soil firstly and excavating secondly. Based on the reasons, researches on a fixing device suitable for fixing a pile body in an indoor pile soil model test are urgently needed, the model test progress is not influenced, the soil filling process is not influenced, and meanwhile the accuracy of the position of a model pile and the perpendicularity of the model pile body can be guaranteed.
Disclosure of Invention
The invention aims to provide a pile body fixing device for an indoor pile soil model test, which can position a model pile in the process of filling soil.
In order to solve the technical problems, the technical scheme in the invention is as follows:
the pile body fixing device for the indoor pile soil model test comprises at least one pair of model pile locating arms, wherein one ends of the model pile locating arms are provided with side wall connecting structures which are used for being connected with side walls of corresponding model boxes, the other ends of the model pile locating arms are provided with at least one pile fixing ring which is used for being clamped in a C-shaped structure in a corresponding model pile adapting mode, and the model pile locating arms are provided with upper and lower telescopic adjusting sections which are used for adjusting the height of the pile fixing ring.
The model pile positioning arm is also provided with a left-right telescopic adjusting section which can be adjusted in a left-right telescopic way.
The side wall connecting structure comprises a left clamping plate and a right clamping plate which are connected through bolts, wherein one clamping plate is fixed on the model pile positioning arm, and a clamping seam for clamping the side wall of the model box is formed between the left clamping plate and the right clamping plate.
The pile fixing device comprises at least two pile fixing rings, wherein each pile fixing ring is arranged in parallel along the left-right direction at intervals, each pile fixing ring positioning arm comprises a pile fixing ring connecting rod which is arranged in one-to-one correspondence with each pile fixing ring and extends along the front-rear direction, each pile fixing ring is connected with a front end plug bush of each pile fixing ring connecting rod, a rod piece connector is connected with a rear end plug bush of each pile fixing ring connecting rod, two adjacent rod piece connectors are connected with a rod piece plug bush between the connectors which extends along the left-right direction through the axis, and a pile body fixing device for an indoor pile soil model test further comprises a rod assembly connected between one rod piece connector and an up-down telescopic adjusting section.
The rod assembly comprises a longitudinal rod and at least one transverse rod, wherein the axis of the longitudinal rod is connected with one rod connector plug bush, the longitudinal rod extends along the front-back direction, and the transverse rod extends along the left-right direction through the axis of the longitudinal rod connected with the rod connector plug bush.
The longitudinal rod, the transverse rod, the pile fixing ring connecting rod and the rod piece between the connectors are hollow metal rods.
The upper and lower flexible regulation section includes two vertical regulation poles that arrange side by side, and upper and lower flexible regulation section still includes at least one vertical regulating part, and vertical regulating part includes that two dorsal part link firmly together, opposite side pass through the clamp of bolted connection, and two vertical regulation poles wear to adorn respectively in corresponding clamp.
The beneficial effects of the invention are as follows: when the model pile positioning arm is used in a pairing mode, a side wall connecting structure at one end of the model pile positioning arm is connected to the side wall of the model box, a corresponding pair of pile fixing rings of the model pile positioning arm respectively support against two sides of a corresponding model pile to position the model pile, after the model pile is fixed by the model pile fixing device, the model box is filled with soil, when the soil is about to reach the height of the pile fixing rings, the height of the pile fixing rings is lifted through the upper and lower telescopic adjusting sections, the soil filling is continued, the process is repeated until the soil is filled to the top of the model box, and the model pile fixing device is taken away to finish the soil filling.
Drawings
FIG. 1 is a schematic view of the structure of a model pile positioning arm according to the present invention;
FIG. 2 is a schematic view of the vertical adjustment of FIG. 1;
FIG. 3 is a schematic view of the sidewall connection structure of FIG. 1;
FIG. 4 is a schematic view of the T-bar connector of FIG. 1;
fig. 5 is a schematic view of the pile fixing ring in fig. 1.
Description of the embodiments
The embodiment of the pile body fixing device for the indoor pile soil model test is shown in fig. 1-5: the pile positioning arm structure comprises a pair of pile positioning arms, two pile positioning arms of the pile positioning arms are identical in structure, and only the specific structure of one pile positioning arm will be described in detail. The one end of this model stake locating arm is equipped with the lateral wall connection structure 1 that is used for linking to each other with the lateral wall of corresponding model case, and lateral wall connection structure includes left splint 17 and right splint 18 that link to each other through first bolt 19, and one of them splint is fixed in on the model stake locating arm, has formed the centre gripping seam that is used for the centre gripping between left and right splint the lateral wall of model case, and first bolt 19 can block the cooperation with the lateral wall of model case in order to restrict the removal down of model stake locating arm. The model pile positioning arm is provided with an up-down telescopic adjusting section 8 capable of being adjusted in an up-down telescopic mode and a left-right telescopic adjusting section 2 capable of being adjusted in a left-right telescopic mode, the up-down telescopic adjusting section is used for adjusting the up-down position of the pile fixing ring 12, the pile fixing ring 12 comprises a positioning tile 21 and a connecting sleeve 22 which are integrally arranged, and the left-right telescopic adjusting section 2 is used for adjusting the left-right position of the pile fixing ring. The upper and lower flexible regulation section includes two vertical regulation poles 6 that arrange side by side, and upper and lower flexible regulation section still includes two vertical regulating members 5 of upper and lower interval arrangement, and vertical regulating member 5 includes that two dorsal part are together fixed, the opposite side passes through clamp 15 that second bolt 16 connects, and two vertical regulation poles wear to adorn respectively in corresponding clamp. The left-right telescopic adjusting section comprises two parallel transverse adjusting rods 3 and two transverse adjusting pieces 4 which are arranged at intervals left and right, the structure of each transverse adjusting piece is identical to that of each vertical adjusting piece, at least the axis of a clamp in each vertical adjusting piece extends along the up-down direction, and the axis of the clamp in each transverse adjusting piece extends along the left-right direction. The left clamping plate 17 is fixed at the right end of one of the transverse adjusting rods, the left end of the other transverse adjusting rod is connected with the upper end of one of the vertical adjusting rods through the rod connector 13, the rod connector 13 is of a sleeve-shaped structure with a jack 20, and the transverse connecting rod and the vertical adjusting rod are respectively inserted into the corresponding jack 20 of the rod connector.
In this embodiment, three pile fixing rings 12 of each pile fixing arm are arranged at intervals in the left-right direction, each pile fixing arm includes pile fixing ring connecting rods 14 extending in the front-rear direction along axes corresponding to the pile fixing rings one by one, and front ends of the pile fixing ring connecting rods 14 are respectively inserted into inner holes of connecting sleeves corresponding to the rear sides of the pile fixing rings. The rear end plug bush of solid pile ring connecting rod is connected with the member bar connector, and the member bar 11 plug bush is connected between the connector that extends along left and right directions through the axis between two adjacent member bar connectors, and the plug bush connection is the connection relation that the shaft hole was pegged graft, and indoor pile soil model test's pile body fixing device still includes the pole subassembly of connecting between member bar connector and the upper and lower flexible section in the middle part, except the member bar connector that links to each other with solid pile ring connecting rod in the middle part in this embodiment be cross member bar connector, other member bar connectors are T shape inter-rod connector. The rod assembly comprises a longitudinal rod 10 and a transverse rod 9, wherein the axis of the longitudinal rod 10 is connected with the rod connector plug bush in the middle part, the longitudinal rod extends along the front-rear direction, the axis of the transverse rod is connected with the longitudinal rod through the rod connector, the transverse rod extends along the left-right direction, and the right end of the transverse rod is connected with the lower end of the left vertical adjusting rod through the rod connector. In this embodiment, the longitudinal rods, the transverse rods, the pile fixing ring connecting rods and the rod pieces between the connectors are hollow metal rods.
When the pile fixing device is used, the model pile positioning arms are connected with the side plates of the model box through the side wall connecting structures, the second bolts on the hoops of the left-right telescopic adjusting sections are loosened, the left-right positions of the transverse adjusting pieces are adjusted, the left-right positions of the pile fixing rings can be adjusted to be matched with the left-right positions of corresponding model piles, the front-back positions of the side wall connecting structures on the side plates of the model box are adjusted, for example, the clamping seams are in guide sliding fit with the side walls of the model box until the concave parts of the pile fixing rings are propped against the corresponding model piles, then the first bolts for locking the side wall connecting structures clamp the model piles through the two corresponding pile fixing rings of the pair of model pile positioning arms, then filling is carried out into the model box, when the heights of the soil are close to the pile fixing rings, the heights of the pile fixing rings are adjusted through the upper-lower telescopic adjusting sections, the pile fixing rings are continued to be filled with the soil, and the process is repeated until the filling of the top of the model box is completed, and the two model pile positioning arms are taken away.
The pile spacing between two adjacent model piles is determined by the length of the rod piece between the connectors, and the pile spacing of the model piles is ensured; model piles with different intervals are selected, and rod pieces between connectors with different lengths are selected; model piles with different diameters are selected, and pile fixing rings with different sizes are selected. The invention has simple structure, novel and reasonable design, ensures that the simulation pile is stable at the design position in the soil filling process, ensures that the indoor model test is carried out smoothly, ensures that the model test is convenient to operate, is easy to install and disassemble and is convenient to reuse, the model test efficiency and accuracy are greatly improved, and the use effect is good.
In other embodiments of the invention, the number of pile fixing rings of each model pile positioning arm can also be one, two, four or other numbers; when the number of the model piles is large, one pair of model pile positioning arms is insufficient for positioning all the model piles, the number of pairs of model piles can be two pairs, three pairs or more; when only a model pile with one pile distance and one diameter is needed, the corresponding rod and the rod piece connector can be welded.
Claims (3)
1. The utility model provides a stake body fixing device of indoor stake soil model test which characterized in that: the pile fixing device comprises at least one pair of model pile positioning arms, wherein one end of each model pile positioning arm is provided with a side wall connecting structure used for being connected with the side wall of a corresponding model box, the other end of each model pile positioning arm is provided with at least one pile fixing ring which is used for being matched and clamped in a C-shaped structure of a corresponding model pile, and each model pile positioning arm is provided with an up-down telescopic adjusting section used for adjusting the height of each pile fixing ring; the model pile positioning arm is also provided with a left-right telescopic adjusting section capable of being telescopic and adjustable left-right; the pile fixing device comprises at least two pile fixing rings, wherein each pile fixing ring is arranged in parallel at intervals along the left-right direction, each pile fixing ring positioning arm comprises a pile fixing ring connecting rod which is arranged in a one-to-one correspondence manner with each pile fixing ring and extends along the front-back direction, each pile fixing ring is connected with a front end plug bush of each pile fixing ring connecting rod, a rod piece connector is connected with a rear end plug bush of each pile fixing ring connecting rod, two adjacent rod piece connectors are connected through rod piece plug bushes between the connectors, the axis of each rod piece connector extends along the left-right direction, and the pile fixing device for the indoor pile soil model test further comprises a rod assembly connected between one rod piece connector and an up-down telescopic adjusting section; the rod assembly comprises a longitudinal rod and at least one transverse rod, wherein the axis of the longitudinal rod is connected with one rod connector plug bush, the longitudinal rod extends along the front-back direction, and the transverse rod extends along the left-right direction through the axis of the longitudinal rod connected with the rod connector plug bush; the longitudinal rod, the transverse rod, the pile fixing ring connecting rod and the rod piece between the connectors are hollow metal rods.
2. The pile body fixing device for an indoor pile soil model test according to claim 1, wherein: the side wall connecting structure comprises a left clamping plate and a right clamping plate which are connected through bolts, wherein one clamping plate is fixed on the model pile positioning arm, and a clamping seam for clamping the side wall of the model box is formed between the left clamping plate and the right clamping plate.
3. Pile body fixing device for indoor pile soil model test according to claim 1 or 2, characterized in that: the upper and lower flexible regulation section includes two vertical regulation poles that arrange side by side, and upper and lower flexible regulation section still includes at least one vertical regulating part, and vertical regulating part includes that two dorsal part link firmly together, opposite side pass through the clamp of bolted connection, and two vertical regulation poles wear to adorn respectively in corresponding clamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811314166.5A CN109138010B (en) | 2018-11-06 | 2018-11-06 | Pile body fixing device for indoor pile soil model test |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811314166.5A CN109138010B (en) | 2018-11-06 | 2018-11-06 | Pile body fixing device for indoor pile soil model test |
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| Publication Number | Publication Date |
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| CN109138010A CN109138010A (en) | 2019-01-04 |
| CN109138010B true CN109138010B (en) | 2023-12-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811314166.5A Active CN109138010B (en) | 2018-11-06 | 2018-11-06 | Pile body fixing device for indoor pile soil model test |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110144981B (en) * | 2019-05-29 | 2020-07-28 | 东北大学 | Indoor experimental pile arrangement device |
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| CN105735381A (en) * | 2016-04-30 | 2016-07-06 | 山东大学 | Centrifugal model test system with composite foundation and supporting structure having common characters |
| CN207452957U (en) * | 2017-11-21 | 2018-06-05 | 郑州大学 | For the Model Pile fixing device of indoor model test |
| CN108612107A (en) * | 2018-04-28 | 2018-10-02 | 中北大学 | A kind of analogy method of cantilevered retaining structure Excavation Process |
| CN209040174U (en) * | 2018-11-06 | 2019-06-28 | 郑州大学 | Pile body fixing device for indoor pile soil model test |
-
2018
- 2018-11-06 CN CN201811314166.5A patent/CN109138010B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6082173A (en) * | 1997-09-15 | 2000-07-04 | Wai; Yee Kong | Method and apparatus for pile driving |
| JP2002286625A (en) * | 2001-03-28 | 2002-10-03 | Nippon Steel Corp | Method for execution and loading test in model sand ground, device therefor, and ground creating method |
| JP2007138627A (en) * | 2005-11-21 | 2007-06-07 | Geotop Corp | Dynamic horizontal loading test device for pile |
| CN102912812A (en) * | 2011-08-03 | 2013-02-06 | 同济大学 | Model test device for simulating jacked pile driving process |
| CN103499492A (en) * | 2013-10-01 | 2014-01-08 | 浙江工业职业技术学院 | Device and method for testing load in pile-end post-grouting chamber |
| CN104099954A (en) * | 2014-07-11 | 2014-10-15 | 郑州大学 | Transverse-vertical loading device for pile foundation model experiments |
| CN204690808U (en) * | 2015-06-09 | 2015-10-07 | 长安大学 | A kind of stake position restraint device for pile foundation model testing |
| CN105735381A (en) * | 2016-04-30 | 2016-07-06 | 山东大学 | Centrifugal model test system with composite foundation and supporting structure having common characters |
| CN207452957U (en) * | 2017-11-21 | 2018-06-05 | 郑州大学 | For the Model Pile fixing device of indoor model test |
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| CN209040174U (en) * | 2018-11-06 | 2019-06-28 | 郑州大学 | Pile body fixing device for indoor pile soil model test |
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Address after: 6 / F, NO.666 Gonghe Xin Road, Jing'an District, Shanghai 200040 Applicant after: CHINA RAILWAY 15TH BUREAU GROUP Co.,Ltd. Applicant after: URBAN RAIL TRANSIT ENGINEERING COMPANY LIMITED OF CHINA RAILWAY 15TH BUREAU Applicant after: Zhengzhou University Address before: 450001 No. 100 science Avenue, Henan, Zhengzhou Applicant before: Zhengzhou University Applicant before: CHINA RAILWAY 15TH BUREAU GROUP Co.,Ltd. Applicant before: URBAN RAIL TRANSIT ENGINEERING COMPANY LIMITED OF CHINA RAILWAY 15TH BUREAU |
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Inventor after: Zhao Shiyong Inventor after: Zeng Li Inventor after: Qian Yuben Inventor after: Liu Yuhao Inventor after: Wang Song Inventor after: Li Yongmei Inventor after: Wu Longji Inventor after: Zhang Qirui Inventor after: Li Mingyu Inventor after: Ma Shiju Inventor after: Chen Hong Inventor after: Guo Yuancheng Inventor after: Sun Liguang Inventor after: Cui Xinlei Inventor after: Jin Junwei Inventor after: Wei Yanqing Inventor before: Li Mingyu Inventor before: Zeng Li Inventor before: Qian Yuben Inventor before: Liu Yuhao Inventor before: Wang Song Inventor before: Li Yongmei Inventor before: Wu Longji Inventor before: Zhang Qirui Inventor before: Ma Shiju Inventor before: Chen Hong Inventor before: Guo Yuancheng Inventor before: Sun Liguang Inventor before: Zhao Shiyong Inventor before: Cui Xinlei Inventor before: Jin Junwei Inventor before: Wei Yanqing |
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