CN110886332A - Wall foundation underpinning device and construction method thereof - Google Patents
Wall foundation underpinning device and construction method thereof Download PDFInfo
- Publication number
- CN110886332A CN110886332A CN201911137956.5A CN201911137956A CN110886332A CN 110886332 A CN110886332 A CN 110886332A CN 201911137956 A CN201911137956 A CN 201911137956A CN 110886332 A CN110886332 A CN 110886332A
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- support
- wall
- wall foundation
- lifting part
- underpinning device
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- 238000009424 underpinning Methods 0.000 title claims abstract description 78
- 238000010276 construction Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 claims abstract description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 24
- 239000010959 steel Substances 0.000 claims description 24
- 230000003014 reinforcing effect Effects 0.000 claims description 12
- 238000003908 quality control method Methods 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D37/00—Repair of damaged foundations or foundation structures
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- Engineering & Computer Science (AREA)
- Structural Engineering (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)
- Working Measures On Existing Buildindgs (AREA)
Abstract
The invention relates to a wall foundation underpinning device and a construction method thereof. The wall foundation underpinning device comprises a first supporting piece, a second supporting piece, a lifting part and a bottom plate, wherein the first supporting piece is used for supporting the wall; a second support connected to the first support, the second support including a first surface proximate to the first support and a second surface distal to the first support; the lifting part is connected with the second surface and is perpendicular to the second surface; the lifting part is perpendicular to the bottom plate, and the lifting part can enable the wall foundation underpinning device to be adjusted according to the requirement of underpinning height, so that the construction quality is easy to control, and the process is simple. In addition, the underpinning height can be adjusted through the lifting part, so that the wall foundation underpinning device has a wider application range. In addition, the construction method of the wall foundation underpinning device is simple in steps, convenient to operate and suitable for popularization and application.
Description
Technical Field
The invention relates to the field of building construction, in particular to a wall foundation underpinning device and a construction method thereof.
Background
The foundation underpinning is to solve the problems that the foundation of the existing building needs to be treated and the foundation needs to be reinforced; and the technology is a general term for the safety problem of the existing building caused by the need of constructing underground engineering under the foundation of the existing building and the need of constructing new engineering nearby the underground engineering.
The foundation underpinning is suitable for reinforcing, storey-adding or expanding existing buildings, and foundation treatment and foundation reinforcement of the existing buildings influenced by underground engineering construction, new construction and deep foundation pit excavation. At present, a steel plate stool or a local underpinning method is mostly adopted for underpinning a wall foundation. However, the construction quality is difficult to control by the method, and the process is complicated.
Disclosure of Invention
Therefore, it is necessary to provide a wall foundation underpinning device and a construction method thereof, which have the advantages of easy construction quality control and simple process, aiming at the problems of difficult construction quality control and complex process of the underpinning method.
A wall foundation underpinning device comprising:
the first supporting piece is used for supporting the wall body;
a second support connected to the first support, the second support including a first surface proximate to the first support and a second surface distal to the first support;
a lifting part connected with the second surface and perpendicular to the second surface;
the bottom plate is connected with the lifting part, and the lifting part is perpendicular to the bottom plate.
In one embodiment, the lifting part comprises a guide tube and an adjusting rod, one end of the guide tube is vertically connected with the second support member, and the other end of the guide tube is sleeved on the adjusting rod and is in threaded connection with the adjusting rod.
In one embodiment, a bracket is arranged at one end of the adjusting rod far away from the guide tube.
In one embodiment, one end of the guide tube, which is far away from the second support member, is provided with a limiting member, and a projection of the limiting member on the bracket is located in the bracket.
In one embodiment, the second support is perpendicular to the first support and parallel to the base plate.
In one embodiment, the first support is a section steel, the second support is a channel steel, and the wing plate of the first support is located in the groove of the second support.
In one embodiment, the support further comprises a reinforcing plate, wherein the reinforcing plate is vertically connected to the first support.
In one embodiment, the connector is arranged on the second surface and connected with the second surface.
In one embodiment, the connector is a channel steel, and the opening direction of the connector is opposite to the opening direction of the second support.
The construction method of the wall foundation underpinning device comprises the following steps:
forming a hole in the wall body, and flattening and compacting the ground around the hole;
placing a bottom plate on the ground, and erecting a lifting part on the bottom plate;
erecting a second supporting piece and a first supporting piece;
applying jacking force to the wall by using a jack, adjusting the lifting part to a proper height, and jacking the lifting part to the height of the wall to be underpinned;
dismantling the wall body within the range of the underpinned foundation and carrying out underpinning foundation construction;
and after the underpinning foundation reaches the preset strength, the jack and the wall foundation underpinning device are removed.
Above-mentioned wall body basis underpins device is when using, behind the opening at the bottom of the wall, arrange the ground at wall body place in with the bottom plate, when utilizing the jack to adjust the height that the wall body underpins, arrange the lift portion in on the bottom plate after that, then be connected first support piece and lift portion, second support piece is connected with first support piece, then adjustment lift portion to suitable height, make first support piece bearing and the tight wall body in top to the height of the wall body that will underpin, and then can carry out the wall body at underpin basic scope and demolish. Can make above-mentioned wall body basis underpinning device can adjust according to the demand of underpinning height through lift portion for construction quality controls easily, and the process is comparatively simple. In addition, the underpinning height can be adjusted through the lifting part, so that the wall foundation underpinning device has a wider application range. In addition, the construction method of the wall foundation underpinning device is simple in steps, convenient to operate and suitable for popularization and application.
Drawings
FIG. 1 is a schematic diagram of an embodiment of a wall foundation underpinning apparatus;
FIG. 2 is a cross-sectional view A-A of the application shown in FIG. 1;
FIG. 3 is an enlarged view of the wall foundation underpinning device shown in FIG. 2 at a;
fig. 4 is an enlarged view of the wall foundation underpinning device shown in fig. 2 at b;
FIG. 5 is an enlarged view of the wall foundation underpinning apparatus shown in FIG. 2 at position c;
fig. 6 is an enlarged view of the wall foundation underpinning device shown in fig. 2 at the position d.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 and fig. 2, a wall foundation underpinning device 1 of an embodiment includes a first supporting member 10, a second supporting member 12, a lifting portion 14 and a bottom plate 16, wherein the first supporting member 10 is used for supporting the wall 2; a second support 12 is connected to the first support 10, the second support 12 comprising a first surface close to the first support 10 and a second surface remote from the first support 10; lifting portion 14 is connected to and perpendicular to the second surface; the elevator portion 14 is perpendicular to the base plate 16.
Above-mentioned wall body basis underpins device 1 is when using, behind the opening at the bottom of the wall, arrange bottom plate 16 in the ground at wall body 2 place, when utilizing jack 3 to adjust the height that wall body 2 underpins, arrange lifting unit 14 in on bottom plate 16 after that, then be connected first support piece 10 with lifting unit 14, second support piece 12 is connected with first support piece 10, then adjustment lifting unit 14 to suitable height, make first support piece 10 bearing and the tight wall body 2 of top to the height of the wall body 2 that will underpin, and then can carry out the wall body and demolish at underpin basic within range. The lifting part 14 can adjust the wall foundation underpinning device 1 according to the requirement of underpinning height, so that the construction quality is easy to control, and the process is simple. In addition, the underpinning height can be adjusted by the lifting part 14, so that the wall foundation underpinning device 1 has a wider application range.
When the wall foundation underpinning device is used, a plurality of wall foundation underpinning devices 1 can be arranged according to the actual construction requirement, holes are formed in the wall bottom, and the distance between the holes can be determined according to design files or actual requirements. After the opening is opened, the wall foundation underpinning device 1 is arranged in the opening. For example, in fig. 1, 3 holes are opened in the wall bottom, a wall foundation underpinning device 1 is arranged in each hole, and a plurality of wall foundation underpinning devices 1 can be arranged in each hole. For example, in fig. 2, two wall foundation underpinning devices 1 are arranged in the opening, and the two wall foundation underpinning devices 1 are symmetrically distributed along the wall 2. In other embodiments, other numbers of wall foundation underpinning devices 1 may be selected depending on the weight of the wall.
The first supporting member 10 is used for supporting a wall body, and meanwhile, the flatness of a supporting surface is guaranteed, so that the construction quality is improved. In this embodiment, the first supporting member 10 is a steel section, and the extending direction thereof is perpendicular to the extending direction of the wall body. A plurality of holes are arranged at the bottom of the wall body 2, and the wall body foundation underpinning device 1 utilizes the first supporting piece 10 to support the wall body 2.
The second support 12 is connected to the first support 10 and includes a first surface proximate to the first support 10 and a second surface distal from the first support 10. Wherein the first support 10 and the lifting portion 14 are respectively located at two opposite sides of the second support 12, i.e. a first surface is in contact with the first support 10 and a second surface is in contact with the lifting portion 14. The second supporting members 12 are used for connecting the lifting portions 14, and when the number of the wall foundation underpinning devices 1 is two or more, the two or more second supporting members 12 are symmetrically arranged on the first supporting member 10 along the wall. Further, as shown in fig. 3, in the present embodiment, the second support 12 is perpendicular to the first support 10 and parallel to the bottom. The first support 10 is a steel section, the second support 12 is a channel steel, and the wing plate of the first support 10 is located in the groove of the second support 12. The opening direction of the second supporting member 12 faces the first supporting member 10, and the wing plate of the first supporting member 10 is located in the groove of the second supporting member 12, so that the movement of the first supporting member 10 can be limited, and the stability of the wall foundation underpinning device 1 can be improved.
As shown in fig. 4, in the present embodiment, the wall foundation underpinning device 1 further comprises a reinforcing plate 18, and the reinforcing plate 18 is vertically connected to the first supporting member 10. The reinforcing plate 18 may improve the stability of the first support 10. In the present embodiment, the reinforcing plate 18 and the first support 10 may be welded or screwed. Further, the number of the reinforcing plates 18 may be two, and the two reinforcing plates 18 are connected to each other by bolts. In the present embodiment, the reinforcing plate 18 is a steel plate.
Referring to fig. 3 and 5, in the present embodiment, the wall foundation underpinning device 1 further includes a connecting member 20, and the connecting member 20 is disposed on and connected to the second surface of the first supporting member 10. The connecting member 20 is used for connecting the jack 3, in this embodiment, the connecting member 20 is a channel steel, and the opening direction of the connecting member 20 is opposite to the opening direction of the second supporting member 12. As shown in fig. 3 and 5, in the present embodiment, the opening direction of the second supporting member 12 is upward, and the opening direction of the connecting member 20 is downward, which facilitates the positioning of the jack 3.
The height of the wall foundation underpinning device 1 is adjusted through the lifting part 14, and the wall foundation underpinning device is further suitable for different underpinning heights. As shown in fig. 6, in the present embodiment, the lifting unit 14 includes a guide tube 140 and an adjustment rod 142, the guide tube 140 is vertically connected to the second support 12, and the guide tube 140 is sleeved on the adjustment rod 142 and is threadedly connected to the adjustment rod 142. The outer wall of the adjusting rod 142 is provided with external threads, the inner thread matched with the external threads of the adjusting rod 142 is arranged in the guide pipe 140, the adjusting rod 142 and the guide pipe 140 can be connected at different positions by rotating the adjusting rod 142, and then different underpinning heights can be adjusted. Further, in the present embodiment, a bracket 144 is disposed at an end of the adjusting rod 142 away from the guide tube 140. When in use, the operator can rotate the adjusting rod 142 by holding the bracket 144 with hands, which is labor-saving and convenient. Meanwhile, a limiting member 146 is disposed at an end of the guide tube 140 away from the second support 12, and a projection of the limiting member 146 on the bracket 144 is located in the bracket 144. The stop 146 may increase the force bearing area of the bottom of the guide tube 140, thereby distributing the force exerted by the guide tube 140 on the base plate 16. In the embodiment, the guide tube 140 is a steel tube with a diameter of 48mm and a thickness of 3.6mm, and the stopper 146 may be a steel plate and is integrally formed with the guide tube 140. In addition, in the present embodiment, the guiding tube 140 is connected to the second supporting member 12 by welding.
The base plate 16 is used for supporting the lifting unit 14, and during construction, the ground is firstly compacted and leveled, and then the base plate 16 is laid. In this embodiment, the bottom plate 16 is a steel plate spacer.
The wall foundation underpinning device 1 can be suitable for different underpinning heights through the lifting part 14, and the sizes of all components (such as section steel, channel steel and brackets) can be adjusted according to the load of the onsite underpinning wall 2, so that the wall foundation underpinning device has a wider application range. Moreover, each part of the foundation underpinning device can be repeatedly used, so that the construction cost can be saved.
A construction method of the wall foundation underpinning device 1 will be described below, and the wall foundation underpinning device 1 of an embodiment includes the following steps:
the method comprises the following steps: and (3) forming a hole in the wall body 2, and flattening and compacting the ground around the hole. And (3) forming holes at the bottom of the wall to be underpinned, wherein the distance between the holes can be determined according to design files or requirements, and the distance between the holes is 1 meter under the general condition. The periphery of the opening is compacted and leveled, so that the mounting accuracy of the wall foundation underpinning device 1 is ensured.
Step two: the base plate 16 is placed on the ground, and the lifting unit 14 is mounted on the base plate 16. In this embodiment, the bottom plate 16 is a steel plate pad, and the thickness thereof can be determined according to the load of the wall to be underpinned, for example, the wall to be underpinned has a larger load, and a thicker steel plate pad can be selected, otherwise. The lifting unit 14 is vertically disposed on the bottom plate 16, specifically, the adjusting rod 142 is vertically disposed on the bottom plate 16, one end of the guiding tube 140 is sleeved on the adjusting rod 142, and the other end is connected to the second supporting member 12.
Step three: the second support 12 and the first support 10 are erected. The second support 12 is coupled to the guide tube 140, and then the first support 10 is placed on the second support 12 and perpendicularly coupled to the first support 10. In the present embodiment, the second support 12 is welded to the first support 10. Further, in the present embodiment, a connector 20 is further provided on the second support 12 for providing the jack 3. In the present embodiment, the first supporter 10 is a steel section, and the second supporter 12 is a steel channel, wherein the steel section and the steel channel are sized according to the load of the underpinned wall.
Step four: and applying jacking force to the wall by using the jack 3, and then adjusting the lifting part 14 to a proper height and jacking the lifting part to the height of the wall 2 to be underpinned. The type of the jack 3 is determined according to the size of the jack 3 to be loaded. The jack 3 then applies a jacking force to adjust the lifting part 14 to a proper height and tightly jacks the wall 2 to be underpinned.
Step five: and (4) dismantling the wall body 2 within the range of the underpinned foundation and carrying out underpinning foundation construction. After the wall body within the range of the underpinned foundation is removed, the binding of the steel bars of the moisture-proof layer and the construction of the underpinned foundation, such as the construction of a concrete foundation, can be carried out.
Step six: and after the underpinning foundation reaches the preset strength, the jack 3 and the wall foundation underpinning device 1 are removed. After the underpinned foundation reaches the strength, the jack 3 is unloaded, and the underpinning device 1 for the wall foundation is dismantled at the same time. The underpinning device 1 for the wall foundation after being dismantled can also be used for subsequent construction, and is favorable for reducing the construction cost.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A wall foundation underpins device which characterized in that includes:
the first supporting piece is used for supporting the wall body;
a second support connected to the first support, the second support including a first surface proximate to the first support and a second surface distal to the first support;
a lifting part connected with the second surface and perpendicular to the second surface;
the bottom plate is connected with the lifting part, and the lifting part is perpendicular to the bottom plate.
2. The wall foundation underpinning device as claimed in claim 1, wherein said lifting part comprises a guide tube and an adjusting rod, one end of said guide tube is vertically connected with said second support member, and the other end is sleeved on said adjusting rod and is in threaded connection with said adjusting rod.
3. The wall foundation underpinning device of claim 2, wherein the end of the adjusting rod away from the guide pipe is provided with a bracket.
4. The wall foundation underpinning device of claim 2, wherein one end of the guide pipe away from the second support member is provided with a limiting member, and a projection of the limiting member on the bracket is positioned in the bracket.
5. The wall foundation underpinning device of claim 1, wherein said second support member is perpendicular to said first support member and parallel to said bottom plate.
6. The wall foundation underpinning device of claim 1, wherein the first support is a steel section and the second support is a steel section, and the wing plate of the first support is positioned in the groove of the second support.
7. The wall foundation underpinning device of claim 6 further comprising a reinforcing plate, said reinforcing plate being connected perpendicularly to said first support member.
8. The wall foundation underpinning device of claim 6, further comprising a connector disposed on and connected to said second surface.
9. The wall foundation underpinning device of claim 8, wherein the connecting piece is a channel steel, and the opening direction of the connecting piece is opposite to the opening direction of the second supporting piece.
10. A method of constructing a wall foundation underpinning device as claimed in any one of claims 1 to 9, comprising the steps of:
forming a hole in the wall body, and flattening and compacting the ground around the hole;
placing a bottom plate on the ground, and erecting a lifting part on the bottom plate;
erecting a second supporting piece and a first supporting piece;
applying jacking force to the wall by using a jack, adjusting the lifting part to a proper height, and jacking the lifting part to the height of the wall to be underpinned;
dismantling the wall body within the range of the underpinned foundation and carrying out underpinning foundation construction;
and after the underpinning foundation reaches the preset strength, the jack and the wall foundation underpinning device are removed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911137956.5A CN110886332A (en) | 2019-11-20 | 2019-11-20 | Wall foundation underpinning device and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911137956.5A CN110886332A (en) | 2019-11-20 | 2019-11-20 | Wall foundation underpinning device and construction method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN110886332A true CN110886332A (en) | 2020-03-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911137956.5A Pending CN110886332A (en) | 2019-11-20 | 2019-11-20 | Wall foundation underpinning device and construction method thereof |
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| Country | Link |
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| CN (1) | CN110886332A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111677326A (en) * | 2020-06-19 | 2020-09-18 | 上海建工四建集团有限公司 | Temporary underpinning device for concrete column and using method thereof |
| CN111980439A (en) * | 2020-07-21 | 2020-11-24 | 上海建工一建集团有限公司 | Wall bearing replacement device and wall bearing replacement construction method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2039566A (en) * | 1978-12-19 | 1980-08-13 | Pynford Ltd | Underpinning |
| CN103075020A (en) * | 2013-02-04 | 2013-05-01 | 广州市胜特建筑科技开发有限公司 | Steel tray supporting force transferring system |
| CN206941667U (en) * | 2017-07-11 | 2018-01-30 | 上海岩土工程勘察设计研究院有限公司 | A kind of unilateral underpinning structure in brick wall pedestal foot basis |
| CN110453827A (en) * | 2019-08-27 | 2019-11-15 | 金螳螂精装科技（苏州）有限公司 | A leveling support for the ground of an assembled keel partition wall |
-
2019
- 2019-11-20 CN CN201911137956.5A patent/CN110886332A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2039566A (en) * | 1978-12-19 | 1980-08-13 | Pynford Ltd | Underpinning |
| CN103075020A (en) * | 2013-02-04 | 2013-05-01 | 广州市胜特建筑科技开发有限公司 | Steel tray supporting force transferring system |
| CN206941667U (en) * | 2017-07-11 | 2018-01-30 | 上海岩土工程勘察设计研究院有限公司 | A kind of unilateral underpinning structure in brick wall pedestal foot basis |
| CN110453827A (en) * | 2019-08-27 | 2019-11-15 | 金螳螂精装科技（苏州）有限公司 | A leveling support for the ground of an assembled keel partition wall |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111677326A (en) * | 2020-06-19 | 2020-09-18 | 上海建工四建集团有限公司 | Temporary underpinning device for concrete column and using method thereof |
| CN111980439A (en) * | 2020-07-21 | 2020-11-24 | 上海建工一建集团有限公司 | Wall bearing replacement device and wall bearing replacement construction method |
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Application publication date: 20200317 |