CN219973217U - Foundation pit fender post with adjustable rigidity - Google Patents
Foundation pit fender post with adjustable rigidity Download PDFInfo
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- CN219973217U CN219973217U CN202321200153.1U CN202321200153U CN219973217U CN 219973217 U CN219973217 U CN 219973217U CN 202321200153 U CN202321200153 U CN 202321200153U CN 219973217 U CN219973217 U CN 219973217U
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 112
- 239000010959 steel Substances 0.000 claims abstract description 112
- 238000003466 welding Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 10
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000010276 construction Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
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- Piles And Underground Anchors (AREA)
Abstract
The utility model relates to a rigidity-adjustable foundation pit guard pile which comprises an outer rectangular steel pipe (1), an inner cored steel (2), a top cover plate (3), a positioning line (4) and a locking device (5); the inside of outside rectangle steel pipe (1) be equipped with location notch (11), inside adds core steel (2) and inserts in outside rectangle steel pipe (1) through location notch (11), top apron (3) set up at outside rectangle steel pipe (1) top, location line (4) are through locking device (5) connection top apron (3) and inside add core steel (2). Compared with the prior art, the utility model has the advantages of adjustable rigidity, high material utilization rate, green environmental protection and the like.
Description
Technical Field
The utility model relates to the technical field of civil engineering, in particular to a foundation pit fender post with adjustable rigidity.
Background
In the existing foundation pit bracing system, as the most common bracing piles for the foundation pit edge, such as bored piles, SMW construction methods, underground diaphragm walls and the like, the following problems exist
Firstly, the bored pile adopts the same pile diameter, the SMW construction method adopts the same specification section steel, the underground continuous wall adopts the same wall thickness, the equal rigidity arrangement is adopted along the pile length direction, and the rigidity cannot be adjusted according to the stress characteristics;
secondly, according to the calculation and actual measurement results of the profile, the stress of the guard piles is concentrated near the pit bottom and near the supporting point, the stress of other areas is smaller, and an equal-rigidity enveloping design method is adopted, so that the material utilization rate is lower.
In addition, the bored pile and the underground diaphragm wall are adopted at present to form underground barriers in the left underground after the foundation pit construction is completed, so that the development of the later underground space is not facilitated.
Disclosure of Invention
The utility model aims to provide the foundation pit fender post with adjustable rigidity, which is adjustable in rigidity, high in material utilization rate and environment-friendly.
The aim of the utility model can be achieved by the following technical scheme: the foundation pit fender post comprises an outer rectangular steel pipe, an inner cored steel, a top cover plate, a positioning line and a locking device;
the inside locating notch that is equipped with of outside rectangle steel pipe, inside core steel insert in the outside rectangle steel pipe through the locating notch, the top apron sets up at outside rectangle steel pipe top, the locating wire passes through locking device and connects top apron and inside core steel.
Preferably, the section of the internal cored steel is I-shaped, and the length of the internal cored steel can be smaller than or equal to that of the external rectangular steel pipe.
Preferably, the length of the inner cored steel is smaller than that of the outer rectangular steel pipe.
Preferably, the locating notch is connected to the outer rectangular steel pipe by welding or other reliable means, and is spaced from the edge of the outer rectangular steel pipe.
Preferably, a cover plate positioning hole is formed in the middle of the top cover plate, and the positioning wire penetrates through the cover plate positioning hole and is fixed on the top cover plate through the locking device.
Further preferably, the number of the positioning holes of the cover plate is the same as that of the positioning lines.
Preferably, the upper part of the internal cored steel is provided with a steel positioning hole, and the locking device fixes the positioning wire on the internal cored steel through the steel positioning hole.
Preferably, the cross section of the top cover plate is rectangular, and the size of the top cover plate is slightly larger than that of the cross section of the external rectangular steel pipe.
Preferably, the positioning line is a steel bar or a steel strand. In the present utility model, the alignment wires are not rigid, allowing connection in different directions.
Preferably, the locking means is a fixing bolt or other fastening member.
Compared with the prior art, the utility model has the following advantages:
1. the rigidity of the fender post is adjustable, the material utilization rate is high, and the fender post is environment-friendly;
2. according to the utility model, the steel pipe pile and the section steel can be adjusted in size and length according to the stress characteristics of the foundation pit guard pile by inserting the section steel into the rectangular steel pipe pile to form the guard pile with adjustable rigidity, and the material utilization rate can be improved by more than 20% on the premise of meeting the safety requirement;
3. the utility model has the advantages of full prefabricated structure, high construction efficiency, complete recovery and repeated use after the foundation pit is completed, and environmental protection;
4. according to the utility model, the positioning notch is arranged, so that the bonding of the internal cored steel and the external rectangular steel pipe is facilitated, the deformation coordination performance of the internal cored steel and the external rectangular steel pipe is improved, and the structural strength of the external rectangular steel pipe is also improved;
5. according to the utility model, the connection between the top cover plate and the internal core-added steel is realized through the positioning line, the position of the internal core-added steel can be accurately positioned, the position of the internal core-added steel is adjusted on the premise of not disassembling the top cover plate, and the recovery of the internal core-added steel is facilitated.
Drawings
FIG. 1 is a general sectional view of an adjustable stiffness foundation pit fender post of the present utility model;
FIG. 2 is a side view of an adjustable stiffness foundation pit fender pile of the present utility model;
FIG. 3 is a top view of an adjustable stiffness foundation pit support pile of the present utility model;
FIG. 4 is a sectional view of section L1 of the foundation pit fender post with adjustable rigidity according to the utility model;
FIG. 5 is a sectional view of the L2 section of the foundation pit fender post with adjustable rigidity;
FIG. 6 is a sectional view of section L3 of the foundation pit fender post with adjustable rigidity according to the utility model;
FIG. 7 is a top view of a rectangular steel pipe pile of the foundation pit fender pile with adjustable rigidity;
FIG. 8 is a side view of a rectangular steel pipe pile of the foundation pit fender pile of the present utility model with adjustable stiffness;
FIG. 9 is a top view of an adjustable stiffness foundation pit fender pile cored steel section of the present utility model;
FIG. 10 is a side view of the stiffness adjustable foundation pit fender pile cored section steel of the present utility model;
FIG. 11 is a top view of a top deck of an adjustable stiffness foundation pit fender pile of the present utility model;
FIG. 12 is a side view of an adjustable stiffness foundation pit fender positioning member of the present utility model;
in the figure: the steel tube comprises a 1-outer rectangular steel tube, a 11-positioning notch, a 2-inner cored steel, a 21-steel positioning hole, a 3-top cover plate, a 31-cover plate positioning hole, a 4-positioning wire and a 5-locking device.
Detailed Description
The utility model will now be described in detail with reference to the drawings and specific examples. The following examples are given by way of illustration of detailed embodiments and specific procedures based on the technical scheme of the present utility model, but the scope of the present utility model is not limited to the following examples.
Example 1
The foundation pit fender post with adjustable rigidity comprises an outer rectangular steel pipe 1, an inner cored steel 2, a top cover plate 3, a positioning line 4 and a locking device 5 as shown in fig. 1.
As shown in fig. 6-7, a positioning notch 11 is formed in the outer rectangular steel pipe 1, as shown in fig. 5, the inner cored steel 2 is inserted into the outer rectangular steel pipe 1 through the positioning notch 11, the top cover plate 3 is arranged at the top of the outer rectangular steel pipe 1, and the positioning line 4 is connected with the top cover plate 3 and the inner cored steel 2 through the locking device 5.
Example 2
The utility model provides an adjustable rigidity foundation ditch fender post, as shown in fig. 1~12, includes outside rectangle steel pipe 1, inside cored steel 2, top apron 3, locating line 4 and locking device 5 outside the foundation ditch.
The inner cored steel 2 is inserted into the outer rectangular steel pipe 1 through a positioning notch 11 in the outer rectangular steel pipe 1; the section steel positioning hole 21 at the top of the internal cored section steel 2 is connected with the cover plate positioning hole 31 in the middle of the top plate cover plate 3 into a whole through the positioning line 4; the locking device 5 tightly connects the positioning wire 4 with the internal cored steel 2 through the steel positioning hole 21; the locking device 5 tightly connects the positioning wire 4 with the top plate cover plate 3 through the cover plate positioning hole 31.
The outer rectangular steel pipe 1 is made of steel and has a certain wall thickness. The positioning notch 11 is positioned inside the external rectangular steel pipe 1, is made of steel or other materials, and is connected with the external rectangular steel pipe 1 in a welding or other reliable modes, so that the insertion requirement of the internal cored steel 2 is met. The internal cored steel 2 is made of steel, and the section shape is I-shaped. The section steel positioning hole 21 is positioned at the top of the internal cored section steel 2, and the size meets the locking requirement of the penetrating and locking device 5 of the positioning wire 4. The top cover plate 3 is made of steel, is rectangular in shape and has a size slightly larger than the cross section of the outer rectangular steel pipe 1. The middle part of the top cover plate 3 is distributed with cover plate positioning holes 31, the positioning wires 4 penetrate through the cover plate positioning holes 31, and the positioning wires 4 are tightly connected with the top cover plate 3 by adopting a locking device 5. The cover plate positioning holes 31 are positioned in the middle of the top cover plate 3, and the size meets the locking requirement of the positioning lines 4 penetrating through and locking devices 5, and the number of the positioning lines is equal to that of the positioning lines 4. The positioning line 4 is made of steel, can be made of stiff materials such as steel bars or steel strands, has enough strength to meet the positioning requirement of the internal cored steel 2, and is provided with locking devices 5 at two ends, so that the positioning line 4 can be fixed at the positions of the steel positioning holes 21 and the cover plate positioning holes 31 respectively. The locking device 5 is made of steel, can be a fixing bolt or other fastening members, can be integrally connected with the positioning wire 4, and can fix the positioning wire 4 at the positions of the profile steel positioning hole 21 and the cover plate positioning hole 31.
In this embodiment, a construction process of an adjustable rigidity foundation pit fender post includes:
the first step: a positioning notch 11 is arranged in the outer rectangular steel pipe 1 in advance;
and a second step of: the positioning wire 4 passes through the profile steel positioning hole 21 and is tightly connected by adopting the locking device 5;
and a third step of: inserting the inner cored steel 2 into the outer rectangular steel pipe 1 to a specific depth along the positioning notch 11;
fourth step: the positioning wire 4 passes through the cover plate positioning hole 31 and is tightly connected by adopting the locking device 5;
fifth step: fixing a top cover plate 3 on the top of the external rectangular steel pipe 1;
sixth step: driving the assembled fender pile into an undisturbed or stirred soil body;
seventh step: pulling out the guard piles after the foundation pit is backfilled;
eighth step: sequentially disassembling the locking device 5 and the top cover plate 3, and pulling out the internal cored steel 2;
ninth step: the outer rectangular steel pipe 1 and the inner cored steel 2 are cleaned and used next time.
And (3) comparing and analyzing with the existing pile type:
the foundation pit guard pile may be divided into three sections from top to bottom, the first section may be referred to as a deformation control section, the second section may be referred to as a strength control section, and the third section may be referred to as a stability control section. For the requirement of structural strength, the stress of the strength control section is maximum, the stress of the deformation control section is inferior, and the stress of the stability control section is minimum. Conventional prefabricated fender piles are generally arranged in equal strength, namely the section size of the fender pile is determined by the strength control section, so that the fender pile material is more in use. The utility model can set the rigidity and the strength of the fender post in sections according to the requirements of the fender post. The specific allocation is approximately as follows: compared with the conventional fender pile, the section strength of the deformation control section can be taken as 80% of the strength control section, the strength of the stability control section can be taken as 60% of the strength control section, and the comprehensive calculation material utilization rate is about 80% of that of the conventional fender pile. For projects with low requirements for deformation, the material saving effect is better.
The previous description of the embodiments is provided to facilitate a person of ordinary skill in the art in order to make and use the present utility model. It will be apparent to those skilled in the art that various modifications can be readily made to these embodiments and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present utility model is not limited to the above-described embodiments, and those skilled in the art, based on the present disclosure, should make improvements and modifications without departing from the scope of the present utility model.
Claims (10)
1. The foundation pit fender post with the adjustable rigidity is characterized by comprising an outer rectangular steel pipe (1), an inner cored steel (2), a top cover plate (3), a positioning line (4) and a locking device (5);
the inside of outside rectangle steel pipe (1) be equipped with location notch (11), inside adds core steel (2) and inserts in outside rectangle steel pipe (1) through location notch (11), top apron (3) set up at outside rectangle steel pipe (1) top, location line (4) are through locking device (5) connection top apron (3) and inside add core steel (2).
2. The foundation pit fender pile with adjustable rigidity according to claim 1, wherein the cross section of the internal cored steel (2) is shaped like an "I".
3. The foundation pit fender pile with adjustable rigidity according to claim 1, wherein the length of the inner cored steel (2) is smaller than that of the outer rectangular steel tube (1).
4. The foundation pit fender pile with adjustable rigidity according to claim 1, wherein the positioning notch (11) is connected with the outer rectangular steel pipe (1) by welding, and is spaced from the edge of the outer rectangular steel pipe (1).
5. The foundation pit fender pile with adjustable rigidity according to claim 1, wherein a cover plate positioning hole (31) is formed in the middle of the top cover plate (3), and the positioning wire (4) passes through the cover plate positioning hole (31) and is fixed on the top cover plate (3) through the locking device (5).
6. The foundation pit guard pile with adjustable rigidity according to claim 5, wherein the number of the cover plate positioning holes (31) is the same as that of the positioning lines (4).
7. The foundation pit fender pile with adjustable rigidity according to claim 1, wherein the upper part of the internal cored steel (2) is provided with a steel positioning hole (21), and the locking device (5) fixes the positioning wire (4) on the internal cored steel (2) through the steel positioning hole (21).
8. The foundation pit fender pile with adjustable rigidity according to claim 1, wherein the cross section of the top cover plate (3) is rectangular, and the dimension is slightly larger than the cross section of the outer rectangular steel pipe (1).
9. The foundation pit fender pile of claim 1, wherein the positioning wire (4) is a steel bar or a steel strand.
10. Foundation pit guard pile with adjustable rigidity according to claim 1, characterised in that the locking means (5) are fixing bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321200153.1U CN219973217U (en) | 2023-05-18 | 2023-05-18 | Foundation pit fender post with adjustable rigidity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321200153.1U CN219973217U (en) | 2023-05-18 | 2023-05-18 | Foundation pit fender post with adjustable rigidity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219973217U true CN219973217U (en) | 2023-11-07 |
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ID=88582703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321200153.1U Active CN219973217U (en) | 2023-05-18 | 2023-05-18 | Foundation pit fender post with adjustable rigidity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219973217U (en) |
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2023
- 2023-05-18 CN CN202321200153.1U patent/CN219973217U/en active Active
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