CN211143138U - Arch temporary suspension protection system for underground existing channel - Google Patents
Arch temporary suspension protection system for underground existing channel Download PDFInfo
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- CN211143138U CN211143138U CN201921578772.8U CN201921578772U CN211143138U CN 211143138 U CN211143138 U CN 211143138U CN 201921578772 U CN201921578772 U CN 201921578772U CN 211143138 U CN211143138 U CN 211143138U
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Abstract
The utility model is suitable for a belong to municipal works technical field, especially, relate to an arch of existing passageway in the ground suspends protection system in midair temporarily. The system comprises a foundation, an arched girder, a lower chord tie rod, a transverse tie rod and a suspension cable. The arched girders are arched, one arched girder is fixed on the basis of two side edges of the existing channel, a lower chord pull rod is arranged between arch feet of each arched girder, and the arched girders at two side edges are connected through a transverse tie rod. Suspension inhaul cables are arranged at the bottom of the arched girder at certain intervals to form a suspension system, and the bottom of the suspension system is connected with the existing underground passage through a connecting piece. The system is used for carrying out suspension protection on the existing channel, and underground facilities can be constructed by open excavation without any limitation below the existing channel, so that the system is low in manufacturing cost and convenient to construct, and breaks through a plurality of limitations in the conventional method.
Description
Technical Field
The utility model belongs to the technical field of municipal works, especially, relate to an arch of existing passageway in the ground suspends protection system in midair temporarily.
Background
The underground facilities are built in a busy area of a city, the condition that the existing underground passage is penetrated downwards is often met, the vehicle passage, the pedestrian passage or the subway tunnel of the existing open cut construction is penetrated downwards, and the traffic function of the passage is not influenced during the construction. In order to ensure the safety of the existing channel structure, the pushing construction is usually carried out by adopting a pipe jacking method or a pipe curtain box culvert method. However, when the jacking construction is performed by adopting a pipe jacking method or a pipe curtain box culvert method, a certain thickness of covering soil is reserved between a newly-built structure and an existing structure, usually not less than 3 meters, the construction cost is high, and the construction can be performed only by linear jacking. When the net distance between the two is less than 3 meters under the control of elevation, the construction risk is higher by adopting the existing pipe jacking method or pipe curtain box culvert method, and certain potential safety hazards exist.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that an arch of underground existing passageway suspends protection system in midair temporarily is provided, when aiming at solving among the prior art closely wearing underground existing passageway construction, both need guarantee certain clear distance, and can only the problem of sharp top advance.
The utility model is realized in such a way that the arch temporary suspension protection system of the underground existing channel comprises a foundation, an arch main beam, a transverse tie bar and a suspension cable; the foundation is vertically arranged on two side edges of the existing channel, the top end of the foundation is higher than the existing channel, and the bottom end of the foundation is lower than a newly-built underground facility; the arched girders are arched, one arched girder is fixed on the basis of two side edges of the existing channel respectively, and the arched girders at the two side edges of the existing channel are connected through a plurality of transverse tie bars arranged at intervals; the bottom of the arched girder is provided with a plurality of suspension inhaul cables at certain intervals to form a suspension system, and the bottom of the suspension system is connected with an existing underground passage to be protected through a connecting piece.
Furthermore, the arched main beam is of a steel truss, a steel pipe concrete structure or a reinforced concrete structure.
Further, the arch girder is arc.
Further, the bottom of each arched girder is also provided with a lower chord pull rod, and the lower chord pull rod is connected with two arch feet of each arched girder.
Further, the lower chord pull rod is a high-strength steel cable.
Furthermore, the connecting piece possesses the regulatory function, and in the adjustment process, the connecting piece can stretch out and draw back along its self length direction to adjust the pulling force of hanging the cable to existing passageway.
Further, the foundation adopts an enlarged foundation or a pile foundation.
Further, the arch-shaped temporary suspension protection system also comprises plain concrete, and the plain concrete is filled between the existing channel and the newly-built underground facility.
Compared with the prior art, the utility model, beneficial effect lies in:
the utility model discloses to wearing the construction of underground existing passageway under closely and provide an arch of underground existing passageway and suspend protection system and method in midair. The system is used for carrying out suspension protection on the existing channel, and underground facilities can be constructed by open excavation without any limitation below the existing channel, so that the system is low in manufacturing cost and convenient to construct, and breaks through a plurality of limitations in the conventional method. Meanwhile, the construction method of the system has few limiting factors and simple and safe construction process.
Drawings
Fig. 1 is a schematic elevation view of an arch-shaped temporary suspension protection system for an existing underground passageway according to an embodiment of the present invention;
FIG. 2 is a cross-sectional schematic view of the arched temporary suspension protection system of FIG. 1;
fig. 3 is a flow chart of the construction of the arched temporary suspension protection system shown in fig. 1.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 and 2, an arch temporary suspension protection system for an existing underground passage according to an embodiment of the present invention is shown, which includes a foundation 1, an arch main beam 2, a transverse tie bar 3, a suspension cable 4, and plain concrete 5.
The foundation 1 adopts an enlarged foundation or a pile foundation, which is vertically arranged at two side edges of an existing channel, the top end of the foundation is higher than the existing channel 100, and the bottom end of the foundation is lower than a newly-built underground facility 200.
The arched main beam 2 is arched and can be of a steel truss, a steel pipe concrete structure or a reinforced concrete structure. In this embodiment, the arched girder 2 is arc-shaped.
On the basis of two side edges of the existing channel 100, one arched girder 2 is respectively fixed, and the arched girders 2 on the two side edges of the existing channel 100 are connected through a plurality of transverse tie bars 3 arranged at intervals to ensure the transverse stability.
The bottom of the arched girder 2 is provided with a plurality of suspension cables 4 at certain intervals to form a suspension system, and the bottom of the suspension system is connected with an existing underground passage 100 to be protected through a connecting piece 6. The connecting piece 6 has an adjusting function, and in the adjusting process, the connecting piece 6 can stretch along the length direction of the connecting piece to adjust the pulling force of the suspension cable 4 on the existing channel.
A lower chord pull rod 7 is connected between two arch feet of each arched girder 2. Preferably, the lower chord pulling rod is a high-strength steel cable.
The plain concrete 5 is filled between the existing passage 100 and the newly built underground facility 200.
Referring to fig. 3, the present embodiment further provides a construction method of the arch temporary suspension protection system, which includes the following specific steps:
s1, constructing a foundation 1;
s2, constructing an arched girder 2, a transverse tie bar 3 and a lower chord pull rod 7;
s3, constructing a suspension cable 4;
s4, excavating to the elevation of the existing channel 100;
s5, connecting the suspension cable 4 with the existing channel 100 by adopting the connecting piece 6;
s6, adjusting the tension of the suspension cable 4;
s7, constructing the underground facilities 200 below;
s8, pouring plain concrete 5 between the newly-built underground facility 200 and the existing channel 100;
s9, removing the arch temporary suspension protection system, and backfilling and covering soil to a designed elevation.
In summary, the present embodiment provides an arched suspension protection system and method for an existing underground passage in a short distance. The system is used for carrying out suspension protection on the existing channel 100, and underground facilities can be constructed in an open cut mode without any limitation below the existing channel, so that the system is low in manufacturing cost and convenient to construct, and breaks through various limitations in the conventional method. Meanwhile, the construction method of the system has few limiting factors and simple and safe construction process.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. An arch temporary suspension protection system of an underground existing channel is characterized by comprising a foundation, an arch main beam, a transverse tie bar and a suspension cable; the foundation is vertically arranged on two side edges of the existing channel, the top end of the foundation is higher than the existing channel, and the bottom end of the foundation is lower than a newly-built underground facility; the arched girders are arched, one arched girder is fixed on the basis of two side edges of the existing channel respectively, and the arched girders at the two side edges of the existing channel are connected through a plurality of transverse tie bars arranged at intervals; the bottom of the arched girder is provided with a plurality of suspension inhaul cables at certain intervals to form a suspension system, and the bottom of the suspension system is connected with an existing underground passage to be protected through a connecting piece.
2. The arched temporary suspension protection system of claim 1, wherein the arched girder is a steel truss, a steel reinforced concrete structure, or a reinforced concrete structure.
3. The arched temporary suspension protection system of claim 2, wherein the arched girders are arched.
4. An arched temporary suspension protection system according to any one of claims 1 to 3, wherein the bottom of the arched girder is further provided with a lower chord connecting two arch feet of each arched girder.
5. An arched temporary suspension protection system as in claim 4, wherein said lower chord is a high tensile wire rope.
6. An arched temporary suspension protection system according to claim 4, wherein said link is adjustable, and during adjustment, said link can be extended and retracted along its length to adjust the tension of the suspension cable on the existing passageway.
7. The arched temporary suspension protection system of claim 1, wherein the foundation is an enlarged foundation or a pile foundation.
8. The arched temporary suspension protection system of claim 6, further comprising plain concrete filled between existing tunnels and newly built underground facilities.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921578772.8U CN211143138U (en) | 2019-09-18 | 2019-09-18 | Arch temporary suspension protection system for underground existing channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921578772.8U CN211143138U (en) | 2019-09-18 | 2019-09-18 | Arch temporary suspension protection system for underground existing channel |
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| Publication Number | Publication Date |
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| CN211143138U true CN211143138U (en) | 2020-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921578772.8U Active CN211143138U (en) | 2019-09-18 | 2019-09-18 | Arch temporary suspension protection system for underground existing channel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110670637A (en) * | 2019-09-18 | 2020-01-10 | 深圳市综合交通设计研究院有限公司 | Arch temporary suspension protection system for underground existing channel and construction method thereof |
-
2019
- 2019-09-18 CN CN201921578772.8U patent/CN211143138U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110670637A (en) * | 2019-09-18 | 2020-01-10 | 深圳市综合交通设计研究院有限公司 | Arch temporary suspension protection system for underground existing channel and construction method thereof |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: Unit 1205, block C, building 1, Xinghe legend Garden Phase III, Longtang community, Minzhi street, Longhua District, Shenzhen City, Guangdong Province Patentee after: Shenzhen comprehensive transportation and municipal engineering design and Research Institute Co.,Ltd. Address before: 518000 No.9 Tianbei 4th Road, Luohu District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN TRANSPORTATION DESIGN & RESEARCH INSTITUTE Co.,Ltd. |
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| CP03 | Change of name, title or address |