CN110029694B - Construction method suitable for vibrating table test pile foundation balancing weight - Google Patents
Construction method suitable for vibrating table test pile foundation balancing weight Download PDFInfo
- Publication number
- CN110029694B CN110029694B CN201910386351.3A CN201910386351A CN110029694B CN 110029694 B CN110029694 B CN 110029694B CN 201910386351 A CN201910386351 A CN 201910386351A CN 110029694 B CN110029694 B CN 110029694B
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- pile foundation
- balancing weight
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- steel plates
- weight
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- 238000010276 construction Methods 0.000 title claims abstract description 19
- 238000012360 testing method Methods 0.000 title claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 45
- 239000010959 steel Substances 0.000 claims abstract description 45
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 7
- 238000002474 experimental method Methods 0.000 description 11
- 239000002699 waste material Substances 0.000 description 6
- 238000003912 environmental pollution Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000006467 substitution reaction Methods 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
Abstract
The invention relates to a construction method suitable for a vibrating table test pile foundation balancing weight, which comprises the following steps: (1) When the concrete balancing weight is poured, pile foundation holes are reserved in the balancing weight; (2) Embedding side steel plates on the side surfaces of the balancing weights, wherein two bolt holes are reserved at the center line of the side steel plates at equal intervals, and the bolt holes penetrate through to pile foundation holes; (3) Before fixing the pile foundation, arranging internal steel plates with different thicknesses at the gaps around the reserved pile foundation holes to adapt to the size of the pile foundation; (4) Pre-burying a top steel plate at the top of the balancing weight, and reserving a vertical bolt hole in the top steel plate; when the weight block is insufficient in quality, the weight block is matched with other weight blocks with pre-buried bolt holes. By the method, the balancing weights suitable for pile foundations with different shapes and sizes can be manufactured.
Description
Technical Field
The invention relates to a construction method suitable for a vibrating table test pile foundation balancing weight.
Background
Since the innovation was opened, china developed rapidly, super high-rise buildings and cross-sea bridges increased continuously, but China was in earthquake-prone areas. The foundation facilities such as bridges are throat channels, so that the research on pile foundation performances in the aspects of super high-rise and bridges is important. The earthquake often causes loss of people and lives and property, then the performance of pile foundations under the action of the earthquake is researched, generally through a vibrating table experiment, a reduced scale model is generally used for pile foundations. The reduced scale model generally generates gravity distortion phenomenon due to the reduced scale, and for better comparison with the prototype, a balancing weight is generally used to eliminate the generation of gravity distortion phenomenon.
In the experiment of the vibrating table, the traditional balancing weight needs to be calculated in advance according to a similar theory and is integrally poured with the pile foundation, so that the balancing weight is wasted and cannot be recycled after the experiment. The traditional balancing weight not only can cause waste of materials, but also is only suitable for the experiment, is not suitable for other experiments, and can also cause environmental pollution and other problems. Based on this situation, a construction method suitable for the pile foundation balancing weight of the vibrating table test is needed.
Disclosure of Invention
The invention aims to provide a construction method suitable for pile foundation balancing weights for a vibrating table test, and the balancing weights suitable for pile foundations with different shapes and sizes can be manufactured by the method.
The technical scheme of the invention is as follows: a construction method suitable for a vibrating table test pile foundation balancing weight comprises the following steps:
(1) When the concrete balancing weight is poured, pile foundation holes are reserved in the balancing weight;
(2) Embedding side steel plates on the side surfaces of the balancing weights, wherein two bolt holes are reserved at the center line of the side steel plates at equal intervals, and the bolt holes penetrate through to pile foundation holes;
(3) Before fixing the pile foundation, arranging internal steel plates with different thicknesses at the gaps around the reserved pile foundation holes to adapt to the size of the pile foundation;
(4) Pre-burying a top steel plate at the top of the balancing weight, and reserving a vertical bolt hole in the top steel plate; when the weight block is insufficient in quality, the weight block is matched with other weight blocks with pre-buried bolt holes. Further, the pile foundation holes are 300-500 mm in height, the shapes of the pile foundation holes are consistent with the shapes of the section of the used pile foundations, and the diameters of the pile foundation holes are 50mm larger than the widths of the section of the pile foundations.
Further, the length of the side steel plates is consistent with the length of the side face of the balancing weight, and the height of the side steel plates is consistent with the size of pile foundation holes in the balancing weight.
Further, the thickness of the side steel plate and the top steel plate is 10mm, respectively.
Further, reinforcing bars of a certain length are welded to the side steel plates, the inner steel plates and the top steel plate.
Compared with the prior art, the invention has the following advantages: the technology can be applied to pile foundations with different shapes and sizes; the structure is simple, the construction is convenient, and the counterweight mass which can be repeatedly used and meet various experimental requirements can be realized; compared with the traditional pile foundation balancing weight, the method for fixing the accompanying weight is simple, convenient and stable to operate; a plurality of pouring procedures can be saved, and convenience is brought to the construction of workers; the material waste after the experiment can not be caused, the waste can be utilized, the problems of environmental pollution and the like are greatly reduced, and the traditional balancing weight is repeatedly utilized. In a word, the construction method suitable for the vibrating table test pile foundation balancing weight has the advantages of being high in universality, convenient to construct, capable of reducing experiment cost, saving time, reducing pollution, being used repeatedly and the like.
Drawings
FIG. 1 is a schematic diagram of a conventional counterweight;
FIG. 2 is a schematic diagram of a vibrating table pile foundation counterweight of the invention;
FIG. 3 is a schematic view of an added counterweight structure of the present invention;
FIG. 4 is a cross-sectional view A-A of FIG. 2 in accordance with the present invention;
FIG. 5 is a top view of the weight of the present invention;
FIG. 6 is a side view of the weight of the present invention;
FIG. 7 is a schematic view of the structure of the pre-buried steel plate of the present invention;
in the figure: 1-balancing weight; 21-side steel plates; 22-inner steel plates; 23-top steel plate; 3-pile foundation holes; 4-bolt holes; 5-reinforcing steel bars; 6-pile foundation; 7-adding a balancing weight.
Detailed Description
In order to make the above features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below, but the present invention is not limited thereto.
Referring to FIGS. 2 through 7
A construction method suitable for a vibrating table test pile foundation balancing weight comprises the following steps:
(1) When the concrete balancing weight 1 is poured, a vertical pile foundation hole 3 is reserved on the bottom surface of the balancing weight, the height of the pile foundation hole is 300-500 mm, the shape of the pile foundation hole is consistent with the shape of the section 6 of a pile foundation, and the diameter of the pile foundation hole is 50mm larger than the section width of the pile foundation, so that the pile foundation hole is applicable to pile foundations with different sizes and the section shape;
(2) The side face of the balancing weight is respectively pre-buried with a side steel plate 21 with the thickness of 10mm, two bolt holes 4 are reserved at the central line of the side steel plate at equal distance, and the bolt holes penetrate through pile foundation holes and are used for fixing pile foundations with different sizes in the shape from four directions;
(3) Before fixing the pile foundation, arranging inner steel plates 22 with different thicknesses at the gaps around the reserved pile foundation holes to adapt to the size of the pile foundation so as to prevent the damage of the pile foundation caused by the fixation of the bolt rod;
(4) In order to prevent the weight of the balancing weight from not meeting the experimental requirement, a top steel plate 23 with the thickness of 10mm is pre-buried at the top of the balancing weight, and a vertical bolt hole 4 is reserved on the top steel plate; when the quality of balancing weight is not enough, with the supporting use of balancing weight that other pre-buried bolt holes so as to satisfy the experiment needs.
In this embodiment, the length of lateral part steel sheet is unanimous with the length of balancing weight side, and the height of lateral part steel sheet is unanimous with pile foundation hole size in the balancing weight.
In this embodiment, a certain length of reinforcing bars 5 are welded to the side, inner and top steel plates so as to fix the side, inner and top steel plates.
The specific using method comprises the following steps:
firstly, pre-burying a side steel plate, a top steel plate and a bolt hole and reserving pile foundation holes when pouring a concrete balancing weight 1; pile foundations of holes with different shapes and slightly larger than the experimental pile foundations by 50mm are poured; the pile foundations with different sizes are adapted by adjusting the inner steel plates with different thicknesses arranged in the pile foundation holes; fixing pile foundations with different sizes by adjusting bolt rods in the bolt holes; by adding the balancing weight 7 on the balancing weight, the device can be repeatedly applied to the balancing weight mass required by various experiments. A plurality of bolt holes are arranged on the additionally-arranged balancing weight 7 at intervals.
The invention solves the problem of balancing weight waste from the viewpoint of laboratory model manufacture, namely, after the method measures are adopted, the problems of experiment cost, material waste, environmental pollution and the like are effectively reduced, and the experiment is conveniently carried out. The construction method is utilized to achieve the purpose of reducing resource waste. The invention has the advantages of simple construction process, high operability, strong applicability, wide application in the field of vibrating table laboratories and the like.
The foregoing is only illustrative of the present invention, and it will be apparent to those skilled in the art from this disclosure that, based on the teachings herein, a construction method for a vibrating table test pile foundation counterweight in a different form may be devised without the need for inventive faculty, and without departing from the spirit and principles of the invention, all such equivalent changes, modifications, substitutions and alterations herein are intended to be embraced by the scope of the invention.
Claims (5)
1. The construction method suitable for the vibrating table test pile foundation balancing weight is characterized by comprising the following steps of:
(1) When the concrete balancing weight is poured, pile foundation holes are reserved in the balancing weight;
(2) Embedding side steel plates on the side surfaces of the balancing weights, wherein two bolt holes are reserved at the center line of the side steel plates at equal intervals, and the bolt holes penetrate through to pile foundation holes;
(3) Before fixing the pile foundation, arranging internal steel plates with different thicknesses at the gaps around the reserved pile foundation holes to adapt to the size of the pile foundation;
(4) Pre-burying a top steel plate at the top of the balancing weight, and reserving a vertical bolt hole in the top steel plate; when the weight block is insufficient in quality, the weight block is matched with other weight blocks with pre-buried bolt holes.
2. The construction method for the vibrating table test pile foundation balancing weight according to claim 1, wherein the pile foundation holes are 300-500 mm in height, the pile foundation holes are identical in shape with the used pile foundation in section, and the diameter of the pile foundation holes is 50mm larger than the width of the pile foundation in section.
3. The construction method for the vibrating table test pile foundation balancing weight according to claim 1 or 2, wherein the length of the side steel plates is consistent with the length of the side faces of the balancing weight, and the height of the side steel plates is consistent with the pile foundation hole size in the balancing weight.
4. A construction method for a vibrating table test pile foundation counterweight according to claim 3, wherein the thicknesses of the side steel plates and the top steel plate are respectively 10mm.
5. The construction method for a vibrating table test pile foundation weight according to claim 1, 2 or 4, wherein a length of reinforcing bars are welded to the side steel plates, the inner steel plates and the top steel plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910386351.3A CN110029694B (en) | 2019-05-09 | 2019-05-09 | Construction method suitable for vibrating table test pile foundation balancing weight |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910386351.3A CN110029694B (en) | 2019-05-09 | 2019-05-09 | Construction method suitable for vibrating table test pile foundation balancing weight |
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| Publication Number | Publication Date |
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| CN110029694A CN110029694A (en) | 2019-07-19 |
| CN110029694B true CN110029694B (en) | 2024-02-06 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104792484A (en) * | 2015-03-25 | 2015-07-22 | 福建省建筑科学研究院 | Superposed concrete balancing weight structure for seismic test and construction method of superposed concrete balancing weight structure |
| CN104975619A (en) * | 2015-07-03 | 2015-10-14 | 朱洋 | Detecting device and detecting method for pile foundation static load |
| CN204944781U (en) * | 2015-09-19 | 2016-01-06 | 福州大学 | A kind of dynamic soil-pile interaction shaketalle test device of pile crown fixed end |
| CN205776415U (en) * | 2016-05-10 | 2016-12-07 | 扬州大学 | Piled-box foundaton isolation property test model case |
| CN210031933U (en) * | 2019-05-09 | 2020-02-07 | 福州大学 | Balancing weight suitable for vibrating table test pile foundation |
-
2019
- 2019-05-09 CN CN201910386351.3A patent/CN110029694B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104792484A (en) * | 2015-03-25 | 2015-07-22 | 福建省建筑科学研究院 | Superposed concrete balancing weight structure for seismic test and construction method of superposed concrete balancing weight structure |
| CN104975619A (en) * | 2015-07-03 | 2015-10-14 | 朱洋 | Detecting device and detecting method for pile foundation static load |
| CN204944781U (en) * | 2015-09-19 | 2016-01-06 | 福州大学 | A kind of dynamic soil-pile interaction shaketalle test device of pile crown fixed end |
| CN205776415U (en) * | 2016-05-10 | 2016-12-07 | 扬州大学 | Piled-box foundaton isolation property test model case |
| CN210031933U (en) * | 2019-05-09 | 2020-02-07 | 福州大学 | Balancing weight suitable for vibrating table test pile foundation |
Non-Patent Citations (1)
| Title |
|---|
| 考虑行波效应的沉管隧道抗震性能:振动台阵试验研究;张学明;闫维明;陈彦江;陈适才;陈红娟;;振动与冲击(02);全文 * |
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| CN110029694A (en) | 2019-07-19 |
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