CN210002459U - Underpinning system for repairing tunnel and passing through existing building for active underpinning - Google Patents
Underpinning system for repairing tunnel and passing through existing building for active underpinning Download PDFInfo
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- CN210002459U CN210002459U CN201920617951.1U CN201920617951U CN210002459U CN 210002459 U CN210002459 U CN 210002459U CN 201920617951 U CN201920617951 U CN 201920617951U CN 210002459 U CN210002459 U CN 210002459U
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Abstract
The utility model relates to a building underpin technical field specifically discloses kind and repaiies underpin system that tunnel passed through existing building initiative underpin, existing building is equipped with the underpin roof beam, the underpin roof beam is for wrapping up former cushion cap girder, underpin roof beam below is equipped with former stake, the underpin structure includes two at least underpin devices, underpin device includes underpin stake, be located the below of underpin roof beam, jack, its bottom contacts with the top of underpin stake, the top contacts with the bottom of underpin roof beam, permanent support self-lock device, the bottom of permanent support self-lock device contacts with the top of underpin stake, the top of permanent support self-lock device contacts with the bottom of underpin roof beam, steel support piece's bottom contacts with the top of underpin stake, steel support piece's top contacts with the bottom of underpin roof beam.
Description
Technical Field
The utility model relates to a building underpins technical field, especially relates to kinds of underpinning systems of repairing tunnel and passing through existing building initiative underpinning.
Background
The underpinning technology is used for solving 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 underpinning technique may also be referred to as base underpinning.
The underpinning technology 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.
In cities, newly-built underground rail transit lines inevitably pass through a large number of existing buildings, and the pile foundations of the existing buildings are inevitably damaged by the newly-built underground rail transit lines passing through the existing buildings. The key for ensuring the safety of the existing buildings is to research the damage of the building pile foundations caused by the underground rail transit construction.
The common method for underground rail transit construction at home and abroad is a pile foundation underpinning technology which is mainly divided into an active underpinning technology and a passive underpinning technology, wherein the active underpinning technology is that the original pile applies load to a new pile and a pile supporting structure before unloading so as to partially eliminate the following effect of long-term deformation of an underpinning system, and in the process of load conversion of the upper part, the deformation of the underpinning structure and the upper structure is dynamically regulated and controlled by using a jacking device, is generally used for underpinning a underpinning project with large load or high structural deformation requirement, the relative reliability is high, the passive underpinning technology is that the load is transmitted to a new stressed system in the process of pile switching of the original pile, is generally used for underpinning projects with smaller underpinning load, and the relative reliability is lower.
When the newly-built underground rail transit line is blocked by the original pile, the original pile needs to be removed through underpinning technology, so safe and reliable existing building underpinning structures are needed to facilitate the removal of the original pile.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an aim at provides kind and repaiies the underpinning system that the tunnel passed through existing building initiative underpinning, can demolish former stake safe and reliable ground.
For reaching above purpose, the utility model provides an kind are repaiied tunnel and are passed through existing building initiative underpinning system, existing building is equipped with the underpinning roof beam, the below of underpinning roof beam is equipped with former stake, including two at least underpinning devices, the underpinning device includes:
the underpinning pile is positioned below the underpinning beam;
the bottom of the jack is in contact with the top of the underpinning pile, and the top of the jack is in contact with the bottom of the underpinning beam;
the bottom of the permanent support self-locking device is contacted with the top of the underpinning pile, and the top of the permanent support self-locking device is contacted with the bottom of the underpinning beam;
and the bottom of the steel supporting piece is in contact with the top of the underpinning pile, and the top of the steel supporting piece is in contact with the bottom of the underpinning beam.
Preferably, the number of the underpinning devices is two, and the two underpinning devices are symmetrically arranged around the original pile.
Preferably, the number of the permanent support self-locking devices is three, and the three permanent support self-locking devices are arranged in a regular triangle.
Preferably, the jack is located at the center of a regular triangle formed by three permanent support self-locking devices.
Preferably, the number of the steel support members is three, and the three steel support members are arranged in a regular triangle.
Preferably, the jack is located at the center of a regular triangle formed by the three steel supports.
Preferably, the steel support member comprises, from top to bottom:
the upper wedge block is in a right-angle triangular column shape;
the lower wedge block is used for being matched with the upper wedge block to form a cuboid shape;
an upper base plate;
a straight steel pipe;
and a lower cushion plate.
Preferably, the straight steel pipe is a seamless steel pipe having a diameter of 150mm or more and 200mm or less.
The utility model has the advantages of providing types of underpinning systems of repairing the tunnel and passing through the existing building initiative underpinning, settling the underpinning device at former stake both sides, after the underpinning device supports the underpinning roof beam completely, just can demolish the former stake in the middle, have safe and reliable's advantage.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only the embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive labor.
Fig. 1 is a schematic front view of an embodiment of an underpinning system for repairing tunnels through active underpinning of an existing building;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
fig. 3 is a schematic top view of an underpinning device according to an embodiment.
In the figure:
1. existing buildings; 101. underpinning the beam; 102. original pile;
2. a underpinning device; 201. underpinning the pile; 202. a jack; 203. a permanent support self-locking device; 204. a steel support;
2041. an upper wedge block; 2042. a lower wedge block; 2043. an upper base plate; 2044. a straight steel pipe; 2045. and a lower cushion plate.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the embodiments of the present invention are described in detail and clearly, it is obvious that the embodiments described below are only some embodiments of , but not all embodiments, in the embodiments of the present invention.
In the description of the present invention, it is to be understood that when components are considered to be "connected" to another components, it can be directly connected to another components or there can be centrally located components at the same time, when components are considered to be "disposed on" another components, it can be directly disposed on another components or there can be centrally located components at the same time.
Furthermore, the terms "long", "short", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are only for convenience of describing the present invention, but do not indicate or imply that the device or element referred to must have the specific orientation, operate in the specific orientation configuration, and thus, should not be construed as limiting the present invention.
The technical solution of the present invention will be further explained by means of specific embodiments with reference to the drawings.
Referring to fig. 1 and 2, the embodiment provides an active underpinning system for tunnel repairs passing through an existing building, the existing building 1 is provided with an underpinning beam 101, an original pile 102 is arranged below the underpinning beam 101, the underpinning structure comprises at least two underpinning devices 2, each underpinning device 2 comprises an underpinning pile 201, a jack 202, a permanent supporting self-locking device 203 and a steel support member 204, the underpinning pile 201 is positioned below the underpinning beam 101, the bottom of the jack 202 is in contact with the top of the underpinning pile 201, the top of the jack 202 is in contact with the bottom of the underpinning beam 101, the bottom of the permanent supporting self-locking device 203 is in contact with the top of the underpinning pile 201, the top of the permanent supporting self-locking device 203 is in contact with the bottom of the underpinning beam 101, the bottom of the steel support member 204 is in contact with the top of the underpinning beam 101.
In particular, the jack 202 is used as the th-level supporting structure, if the jack 202 is damaged, the permanent supporting self-locking device 203 can be used as the second-level supporting structure, and if the permanent supporting self-locking device 203 is damaged, the steel support 204 can be used as the third-level supporting structure.
Preferably, the number of the underpinning devices 2 is two, and the two underpinning devices 2 are symmetrically arranged around the original pile 102. Of course, the number of underpinning means 2 may also be three, four, five or even more.
Referring to fig. 3, in the present embodiment, the number of the permanent support self-locking devices 203 is three, and three permanent support self-locking devices 203 are arranged in a regular triangle. The jack 202 is located in the center of the regular triangle formed by the three permanently supported self-locking devices 203. The number of the steel support members 204 is three, and the three steel support members 204 are arranged in a regular triangle. The jack 202 is located at the center of the regular triangle formed by the three steel supports 204. Specifically, the jack 202 is arranged at the center of the two regular triangles, so that the stress of each supporting structure is uniform, and the reliability of the underpinning structure is enhanced.
In this embodiment, the concrete structure of the permanent supporting self-locking device 203 can be seen in the utility model with the publication number CN205777651U, which is buried in concrete, further , the steel support 204 comprises an upper wedge 2041, a lower wedge 2042, an upper padding plate 2043, a straight steel pipe 2044 and a lower padding plate 2045 in sequence from top to bottom, wherein the upper wedge 2041 is a right-angled triangular prism, and the lower wedge 2042 is used to form a cuboid in cooperation with the upper wedge 2041. specifically, the upper padding plate 2043, the straight steel pipe 2044 and the lower padding plate 2045 are welded in sequence to facilitate the straight steel pipe 2044 to be vertically placed, after the upper padding plate 2043, the straight steel pipe 2044 and the lower padding plate 2045 are placed on the underpinning pile 201, the lower wedge 2042 is placed on the upper padding plate 2043, and then the upper wedge 2041 is knocked in, so as to ensure that the steel support 204 can be supported on the underpinning beam 101.
The underpinning system for repairing the tunnel and passing through the existing building active underpinning provided by the embodiment has the advantages that the underpinning devices 2 are arranged on two sides of the original pile 102, and the original pile 102 in the middle can be detached after the underpinning beam 101 is completely supported by the underpinning devices 2, so that the underpinning system is safe and reliable.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (8)
- The underpinning system for repairing the tunnel and passing through the existing building to underpin actively is characterized by comprising at least two underpinning devices (2), wherein the underpinning system comprises types of underpinning systems, the underpinning systems are arranged on the existing building (1), an underpinning beam (101) is arranged below the underpinning beam (101), and the underpinning devices (2) comprise:an underpinning pile (201), the underpinning pile (201) being located below the underpinning beam (101);a jack (202), the bottom of the jack (202) being in contact with the top of the underpinning pile (201), the top of the jack (202) being in contact with the bottom of the underpinning beam (101);a permanent supporting self-locking device (203), the bottom of the permanent supporting self-locking device (203) is contacted with the top of the underpinning pile (201), and the top of the permanent supporting self-locking device (203) is contacted with the bottom of the underpinning beam (101);a steel support (204), the bottom of the steel support (204) being in contact with the top of the underpinning pile (201), the top of the steel support (204) being in contact with the bottom of the underpinning beam (101).
- 2. Underpinning system for active underpinning of a tunneled through an existing building according to claim 1, characterized in that said number of underpinning devices (2) is two, two of said underpinning devices (2) being symmetrically arranged with respect to said original pile (102).
- 3. The underpinning system for tunnel repairing through the existing building for active underpinning according to claim 1, wherein the number of the permanent support self-locking devices (203) is three, and the three permanent support self-locking devices (203) are arranged in a regular triangle.
- 4. Underpinning system for active underpinning of tunneled through existing building according to claim 3, characterized in that said jack (202) is located at the center of the regular triangle formed by three said permanent supporting self-locking means (203).
- 5. The underpinning system for tunnel-repairing through-the-existing-building active underpinning according to claim 1, characterized in that the number of said steel supporting members (204) is three, and three of said steel supporting members (204) are arranged in a regular triangle.
- 6. Underpinning system for active underpinning of tunneled through existing building according to claim 5, characterized in that said jack (202) is located at the center of the regular triangle formed by three said steel supports (204).
- 7. The underpinning system for the active underpinning of a tunneled through an existing building according to claim 1, wherein said steel support member (204) comprises, in order from top to bottom:the upper wedge block (2041), the upper wedge block (2041) is a right-angle triangular prism;the lower wedge block (2042) is used for being matched with the upper wedge block (2041) to form a cuboid shape;an upper pad plate (2043);a straight steel pipe (2044);a lower pad plate (2045).
- 8. The underpinning system for tunnel repairing through existing building active underpinning according to claim 7, characterized in that said straight steel tube (2044) is a seamless steel tube with a diameter above 150mm and below 200 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920617951.1U CN210002459U (en) | 2019-04-30 | 2019-04-30 | Underpinning system for repairing tunnel and passing through existing building for active underpinning |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920617951.1U CN210002459U (en) | 2019-04-30 | 2019-04-30 | Underpinning system for repairing tunnel and passing through existing building for active underpinning |
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| CN210002459U true CN210002459U (en) | 2020-01-31 |
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| CN201920617951.1U Active CN210002459U (en) | 2019-04-30 | 2019-04-30 | Underpinning system for repairing tunnel and passing through existing building for active underpinning |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113529701A (en) * | 2021-08-30 | 2021-10-22 | 长业建设集团有限公司 | Underpinning protection construction method for bearing platform load of underground concrete pipe trench |
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2019
- 2019-04-30 CN CN201920617951.1U patent/CN210002459U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113529701A (en) * | 2021-08-30 | 2021-10-22 | 长业建设集团有限公司 | Underpinning protection construction method for bearing platform load of underground concrete pipe trench |
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