CN215925986U - Protection architecture under influence of adjacent underground works of existing tunnel - Google Patents

Protection architecture under influence of adjacent underground works of existing tunnel Download PDF

Info

Publication number
CN215925986U
CN215925986U CN202122070949.7U CN202122070949U CN215925986U CN 215925986 U CN215925986 U CN 215925986U CN 202122070949 U CN202122070949 U CN 202122070949U CN 215925986 U CN215925986 U CN 215925986U
Authority
CN
China
Prior art keywords
existing tunnel
pit
protection structure
influence
steel pipe
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202122070949.7U
Other languages
Chinese (zh)
Inventor
程康
张旭东
熊晓晖
夏明锬
梅灿
孙浩林
胡跃
胡小银
徐日庆
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang University ZJU
China Railway 11th Bureau Group Co Ltd
Original Assignee
Zhejiang University ZJU
China Railway 11th Bureau Group Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhejiang University ZJU, China Railway 11th Bureau Group Co Ltd filed Critical Zhejiang University ZJU
Priority to CN202122070949.7U priority Critical patent/CN215925986U/en
Application granted granted Critical
Publication of CN215925986U publication Critical patent/CN215925986U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Abstract

The utility model relates to the technical field of underground engineering construction, in particular to a protection structure of an existing tunnel under the influence of adjacent underground engineering. The structure comprises a plurality of uplift piles positioned on the left side and the right side of the delay direction of the existing tunnel and a steel pipe erected above the existing tunnel, wherein a foundation pit is positioned above the steel pipe, a reinforcing mesh, a concrete layer, a bottom plate and an underground structure are sequentially arranged in the foundation pit from bottom to top, and concrete is filled in the reinforcing mesh; the upper surface cloth of reinforcing bar net is equipped with a plurality of support columns, fill the concrete formation concrete layer between the support column. This structure is through setting up reinforcing bar net, support column, concrete and bottom plate in the foundation ditch for the structure of foundation ditch is more firm, and the difficult safety problems such as uplift that take place carries out better protection to existing tunnel simultaneously.

Description

Protection architecture under influence of adjacent underground works of existing tunnel
Technical Field
The utility model relates to the technical field of underground engineering construction, in particular to a protection structure of an existing tunnel under the influence of adjacent underground engineering.
Background
Along with the construction of urban rail transit projects, a large number of tunnel projects are built in main cities of various big cities, and in the later period, when urban underground space development or urban road tunnel construction is carried out above an existing tunnel, unloading of stratum soil excavation can cause the existing tunnel to bulge upwards along with the resilience of the soil. Therefore, when constructing an existing tunnel, how to protect the existing tunnel is an important task when performing a new underground construction project.
Application number 201610379597.4 discloses a protection architecture to newly-built existing tunnel in underground works below, it is including being located the many anti-floating piles of the existing tunnel derivation direction left and right sides and erect the steel pipe in existing tunnel top, and the anti-floating pile that is located existing tunnel homonymy is interval align to grid in proper order, and the steel pipe is fixed in the upper end of two relative anti-floating piles of existing tunnel both sides, and it can play certain guard action to existing tunnel. But the foundation pit and the working pit are not reinforced, so that the foundation pit is easy to bulge, and potential safety hazards are indirectly caused to the existing tunnel.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems in the prior art, the utility model aims to provide a novel protection structure of an existing tunnel under the influence of adjacent underground engineering, which can reinforce a foundation pit, avoid the uplift of the foundation pit and cause potential safety hazards to the existing tunnel.
The technical purpose is realized by the following technical scheme:
the utility model provides a protective structure of an existing tunnel under the influence of adjacent underground engineering, which comprises a plurality of uplift piles positioned on the left side and the right side of the extension direction of the existing tunnel and a steel pipe erected above the existing tunnel, wherein a foundation pit is positioned above the steel pipe, a reinforcing mesh, a concrete layer, a bottom plate and an underground structure are sequentially arranged in the foundation pit from bottom to top, and concrete is filled in the reinforcing mesh; the upper surface cloth of reinforcing bar net is equipped with a plurality of support columns, fill the concrete formation concrete layer between the support column.
Preferably, one end of the uplift pile, which is close to the steel pipe, is provided with at least one supporting inclined rod, and the supporting inclined rod and the uplift pile form a stable triangular structure.
Specifically, each uplift pile is at least symmetrically provided with a pair of supporting inclined rods, and each pair of supporting inclined rods and the steel pipe between the supporting inclined rods form an equilateral triangle structure.
The two ends of the steel pipe are respectively provided with a working pit, the bottom of the working pit is provided with an installation plate, two side faces of the working pit adjacent to the foundation pit are provided with a second vertical plate, and the side face of the working pit opposite to the foundation pit is provided with a first vertical plate.
Preferably, the border of mounting panel is provided with the mounting groove, the lower extreme of riser one and riser two is installed in the mounting groove.
Preferably, a positioning column is arranged below the working pit and is positioned below the mounting plate.
Wherein the work pits include an origination work pit and a reception work pit.
Preferably, the bottom plate is of a stainless steel structure.
Preferably, the supporting column is a rectangular structure.
Preferably, the heights of the first vertical plate and the second vertical plate are the same as the depth of the working pit.
According to the protection structure of the existing tunnel under the influence of the adjacent underground engineering, the reinforcing mesh, the supporting columns, the concrete and the bottom plate are arranged in the foundation pit, so that the structure of the foundation pit is firmer, the safety problems such as uplift and the like are not easy to occur, and meanwhile, the existing tunnel is better protected; by arranging the support diagonal rods on the uplift piles, on one hand, the overall stability of the steel pipes and the uplift piles can be improved, and on the other hand, soil layers around the existing tunnel can be firmer and are not easy to displace; and a positioning column, a mounting plate and the like are arranged in the working pit, so that the overall strength of the working pit can be improved, and the construction safety is ensured.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of an uplift pile, a steel pipe and a support diagonal rod;
FIG. 3 is a schematic structural diagram of a foundation pit reinforcing device;
fig. 4 is a schematic structural view of a work pit reinforcing apparatus.
In the drawings, the components represented by the respective reference numerals are listed below:
1 existing tunnel, 2 anti-floating piles, 3 initial working pits, 4 receiving working pits, 5 foundation pits, 6 underground structures, 7 steel pipes, 8 reinforcing mesh, 9 supporting columns, 10 concrete layers, 11 bottom plates, 12 supporting inclined rods, 13 mounting plates, 14 first vertical plates, 15 positioning columns, 16 second vertical plates and 17 mounting grooves.
Detailed Description
To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Embodiments of the present application are set forth in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
As shown in fig. 1 to 3, a protective structure of an existing tunnel under the influence of adjacent underground works comprises a plurality of uplift piles 2 located on the left and right sides of the extending direction of the existing tunnel 1 and steel pipes 7 erected above the existing tunnel 1, a foundation pit 5 located above the steel pipes 7, a reinforcement mat 8, a concrete layer 10, a bottom plate 11 and an underground structure 6 sequentially arranged in the foundation pit 5 from bottom to top, wherein the reinforcement mat 8 is filled with concrete; the upper surface of the reinforcing mesh 8 is provided with a plurality of supporting columns 9, and concrete is filled among the supporting columns 9 to form a concrete layer 10.
According to the utility model, the reinforcing mesh is arranged, the reinforcing mesh 8 is placed in the foundation pit 5 after the foundation pit is excavated, the support columns 9 are arranged above the reinforcing mesh 8, concrete is poured, a concrete layer 10 is formed after the concrete is solidified, then the bottom plate 11 is placed on the concrete layer 10, and finally the underground structure is installed on the bottom plate 11, so that the foundation pit 5 is not easy to have the safety problems of uplift and the like, and the existing tunnel is protected.
In an embodiment of the utility model, at least one supporting diagonal rod 12 is arranged at one end of the uplift pile 2 close to the steel pipe 7, one end of the supporting diagonal rod 12 is fixed on the uplift pile 2, and the other end of the supporting diagonal rod is fixed on the steel pipe 7, so that a stable triangular structure is formed with the uplift pile 2 and the steel pipe 7, the overall stability of the steel pipe 7 and the uplift pile 2 is improved, and the soil layer around the tunnel 1 is firmer and is not easy to displace.
Specifically, each uplift pile 2 is at least symmetrically provided with a pair of supporting inclined rods 12, each pair of supporting inclined rods 12 and the steel pipe between the supporting inclined rods form an equilateral triangle structure, and the stability of the triangle is utilized, so that the uplift pile is firmer.
In an embodiment of the utility model, two ends of the steel pipe 7 are respectively a working pit, the bottom of the working pit is provided with a mounting plate 13, two side faces of the working pit adjacent to the foundation pit 5 are provided with a first vertical plate 16, the side face of the working pit opposite to the foundation pit 5 is provided with a first vertical plate 14, namely, one side face of the working pit far away from the existing tunnel 1 is provided with the first vertical plate 14, and two side faces of the working pit close to the first vertical plate 14 are provided with the second vertical plate 16, specifically referring to fig. 4, by mounting the first vertical plate 14, the second vertical plate 16 and the mounting plate 13 in the working pit, the overall strength of the working pit can be improved, and the protection effect on constructors can be improved.
In one embodiment of the utility model, the edge of the mounting plate 13 is provided with a mounting groove 17, and the lower ends of the first vertical plate 14 and the second vertical plate 16 are mounted on the mounting plate 13 through the mounting groove 17, so that the mounting is convenient and fast.
In one embodiment of the utility model, locating posts 15 are provided below the work pit, the locating posts 15 being located below the mounting plate 13. Specifically, the method comprises the following steps: after the working pit is dug, the positioning column 15 is driven into the lower portion inside the working pit, the mounting plate 13 is placed into the working pit, the positioning column 15 plays a supporting role for the mounting plate 13, the ground does not sink when a constructor conducts construction, and the overall strength of the working pit can be improved.
As shown in figure 1, the working pit comprises a starting working pit 3 and a receiving working pit 4, a bottom plate 11 is of a stainless steel structure, a supporting column 9 is of a rectangular structure, a positioning column 15 is of a cylindrical structure, the heights of a first vertical plate 14 and a second vertical plate 16 are the same as the depth of the working pit, the protection area of the working pit is larger, and the protection effect is better.
The working principle of the utility model is as follows: after excavation of foundation ditch 5 finishes, put into foundation ditch 5 with reinforcing bar net 8, lay support column 9 in reinforcing bar net 8 upper end again, later pour concrete in foundation ditch 5 again, place bottom plate 11 on concrete layer 10 after the concrete solidifies, install underground structure 6 on bottom plate 11 at last, through setting up reinforcing bar net 8, support column 9 and pouring concrete, safety problems such as uplift can not take place for foundation ditch 5, improve the protection effect to existing tunnel 1 simultaneously. The arrangement of the supporting inclined rods 12 can improve the overall stability of the steel pipes 7 and the uplift piles 2, and soil layers around the existing tunnel 1 are firmer and are not easy to displace. Through setting up reference column 4, after launching work pit 3 and receiving work pit 4 are dug, squeeze into its inside lower extreme with reference column 15, put into the work pit with mounting panel 13 again, the ground can not appear sinking in the construction, improves the security, and the setting of riser one 14 and riser two 16 can improve the bulk strength of work pit simultaneously.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (10)

1. A protection structure of an existing tunnel under the influence of near underground engineering comprises a plurality of uplift piles (2) positioned at the left side and the right side of the extension direction of the existing tunnel (1) and a steel pipe (7) erected above the existing tunnel (1), a foundation pit (5) is positioned above the steel pipe (7),
the foundation pit (5) is internally provided with a reinforcing mesh (8), a concrete layer (10), a bottom plate (11) and an underground structure (6) from bottom to top in sequence, and the reinforcing mesh (8) is filled with concrete;
the upper surface cloth of reinforcing bar net (8) is equipped with a plurality of support columns (9), fill concrete between support column (9) and form concrete layer (10).
2. Protection structure of an existing tunnel under the influence of the adjacent underground works according to claim 1, characterized in that one end of the uplift pile (2) close to the steel pipe (7) is provided with at least one supporting diagonal rod (12), and the supporting diagonal rod (12) and the uplift pile (2) form a stable triangular structure.
3. A protection structure of an existing tunnel under the influence of adjacent underground works according to claim 2, characterized in that at least one pair of supporting diagonal rods (12) is symmetrically arranged on each uplift pile (2), and each pair of supporting diagonal rods (12) and the steel pipe (7) between them form an equilateral triangle structure.
4. The protection structure of the existing tunnel under the influence of the adjacent underground engineering according to claim 1, wherein two ends of the steel pipe (7) are respectively a working pit, the bottom of the working pit is provided with a mounting plate (13), two side faces of the working pit, which are adjacent to the foundation pit (5), are provided with a second vertical plate (16), and the side face of the working pit (5), which is opposite to the foundation pit (5), is provided with a first vertical plate (14).
5. Protection structure of an existing tunnel in the vicinity of underground works, according to claim 4, characterized in that the edge of the mounting plate (13) is provided with a mounting groove (17), the lower ends of the first (14) and second (16) risers being mounted in the mounting groove (17).
6. Protection structure of an existing tunnel in the vicinity of underground works, according to claim 4 or 5, characterized in that under the working pit there are positioned positioning columns (15), said positioning columns (15) being positioned under the mounting plate (13).
7. Protection structure of an existing tunnel under the influence of adjacent underground works, according to claim 4, characterized in that the work pits comprise an originating work pit (3) and a receiving work pit (4).
8. Protection structure of an existing tunnel in the vicinity of underground works, according to claim 1, characterized in that said floor (11) is of stainless steel construction.
9. Protection structure of an existing tunnel under the influence of adjacent underground works, according to claim 1, characterized in that the supporting columns (9) are of rectangular structure.
10. Protection structure of an existing tunnel under the influence of adjacent underground works, according to claim 4, characterized in that the heights of the risers one (14) and two (16) are the same as the depth of the working pit.
CN202122070949.7U 2021-08-30 2021-08-30 Protection architecture under influence of adjacent underground works of existing tunnel Active CN215925986U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202122070949.7U CN215925986U (en) 2021-08-30 2021-08-30 Protection architecture under influence of adjacent underground works of existing tunnel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202122070949.7U CN215925986U (en) 2021-08-30 2021-08-30 Protection architecture under influence of adjacent underground works of existing tunnel

Publications (1)

Publication Number Publication Date
CN215925986U true CN215925986U (en) 2022-03-01

Family

ID=80421296

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202122070949.7U Active CN215925986U (en) 2021-08-30 2021-08-30 Protection architecture under influence of adjacent underground works of existing tunnel

Country Status (1)

Country Link
CN (1) CN215925986U (en)

Similar Documents

Publication Publication Date Title
CN103437567B (en) Method for supporting existing building underground added storey through original pile foundations
CN108060683A (en) A kind of middle weathering geology top-down construction method
CN205776347U (en) Novel cover for subway station digs against making structural system
CN108193642B (en) Revetment reinforcing facility and construction method thereof
CN103410156B (en) Support space enclosing structure and application process thereof before a kind of recyclable vertical type steel pipe
CN105089670B (en) Construction method for enlarging and excavating subway station on basis of parallel interval shield tunnel
CN108331021A (en) Half cap excavation method large span bedding structure of one kind and its construction method
CN107700498A (en) Multi-thread crossings on different level abnormal shape deep foundation pit supporting structure and its construction method
CN205975658U (en) Steel platform tower crane foundation
CN110777802A (en) Deep foundation pit high-low span supporting structure and construction method thereof
CN103711056A (en) Steel tool type temporary construction road and construction method thereof
CN112832079A (en) Construction method of foamed light soil spliced wide-height highway embankment
CN105064711A (en) Method for constructing underground garage between residential buildings
CN207452911U (en) A kind of multi-thread crossings on different level abnormal shape deep foundation pit supporting structure
CN110805049B (en) Construction method of mountain slope ultra-thickness spray anchor permanent supporting structure
CN215925986U (en) Protection architecture under influence of adjacent underground works of existing tunnel
CN111622234A (en) Unloading type thin-wall box-type retaining wall supported by obliquely and vertically combined steel pipe pile and construction process
CN116289979A (en) Deep foundation pit supporting construction method for underground forward and reverse synchronous construction
CN216765941U (en) Tunnel decompression load shedding structure under bias voltage state
CN210737555U (en) Underground pipeline in-situ protection mechanism for foundation pit supporting system
CN206337566U (en) Foundation ditch vertical prestressing anchor pole supporting construction
KR101117924B1 (en) Composite type steel temporary construction and construction method thereof
CN213681533U (en) Municipal works road bed
CN204940310U (en) A kind of combination retaining structure
CN211447015U (en) H-shaped anti-slide pile plate wall

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant