CN103758150B - The construction method of diplopore three piping lane immersed tube tunnel temporary support and vertical jack thereof - Google Patents
The construction method of diplopore three piping lane immersed tube tunnel temporary support and vertical jack thereof Download PDFInfo
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- CN103758150B CN103758150B CN201410022411.0A CN201410022411A CN103758150B CN 103758150 B CN103758150 B CN 103758150B CN 201410022411 A CN201410022411 A CN 201410022411A CN 103758150 B CN103758150 B CN 103758150B
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Abstract
The invention discloses a kind of vertical jack system for diplopore three piping lane immersed tube tunnel temporary support, the upper end comprising vertical jack is welded with vertical jack top built-in fitting, lower end is welded with vertical jack push rod, and vertical jack is fastening with nut respectively and between the top built-in fitting at two ends and push rod; The bottom of push rod is through vertical jack bottom built-in fitting, clamp sleeve is provided with between the upper port of push rod and bottom built-in fitting, bottom built-in fitting with between clamp sleeve for being threaded, the below of clamp sleeve is provided with the packing for sealing, and is provided with O shape rubber seal between the lower port of push rod and bottom built-in fitting; Bottom built-in fitting is provided with Grouting Pipe.The present invention adopts supported at three point mode, and namely front end adopts nose support, and tail end adopts vertical jack, supporting is arranged in the partition wall of two limit piping lanes, and lateral separation is large, and whole pipeline section vertical, horizontal structure stress is reasonable, in pipeline section drawing process, resistance to overturning is good, the corresponding minimizing of structural reinforcement.
Description
Technical field
The present invention relates to a kind of immersed tube tunnel temporary support structures, particularly relate to a kind of pipeline section sink in place after temporary support structures.
Background technology
Temporary support method after pipeline section sinking is in place, usually in butt end nose support, the vertical jack of the other end supports, and also has the precedent all adopting vertical jack.Take a broad view of the domestic built immersed tube tunnel be open to traffic in recent years, what Guangzhou Zhujiang tunnel, Yong Jiang tunnel, Ningbo and Shanghai Outer Ring Line Tunnel adopted is four-point supporting mode, the specific practice of four-point supporting is: each tube coupling needs configuration four supporting jack and corresponding four pieces of temporary supports, and two supporting jack near tube coupling butt end replace the effect of jack.But now need placed two butt junction location beams by the tube coupling end face sunk to, the end face of the previous tube coupling that sinking is good arranges butt junction location seat.The weak point adopting four-point supporting mode mainly to exist is: at the bottom of positioning precision, four-point supporting adjusted design absolute altitude, and required diver and diver work time increase, and difficulty of construction is large.
Summary of the invention
For above-mentioned prior art, the invention provides a kind of construction method of diplopore three piping lane immersed tube tunnel temporary support, the present invention adopts supported at three point mode, and namely front end adopts nose support, end adopts vertical jack, vertical jack adopts the arrangement form of supported at three point, and end support is arranged in the partition wall of two limit piping lanes, and lateral separation is large, whole pipeline section vertical, horizontal structure stress is reasonable, in pipeline section drawing process, resistance to overturning is good, the corresponding minimizing of structural reinforcement.In addition, the vertical push rod embedded part structure of jack is novel, and safely, reliably, construction quality is guaranteed, good water-proof effect, effectively can reduce construction risk and save construction investment, having good directive significance to similar immersed tube technique tunnel.
In order to solve the problems of the technologies described above, a kind of vertical jack system for diplopore three piping lane immersed tube tunnel temporary support of the present invention, comprise vertical jack, the upper end of described vertical jack is welded with vertical jack top built-in fitting, the lower end of described vertical jack is welded with vertical jack push rod, and described vertical jack is fastening with nut with between the vertical jack top built-in fitting at two ends and vertical jack push rod respectively; The bottom of described vertical jack push rod is through vertical jack bottom built-in fitting, clamp sleeve is provided with between described vertical jack push rod with the upper port of described vertical jack bottom built-in fitting, described vertical jack bottom built-in fitting with between described clamp sleeve for being threaded, the below of described clamp sleeve is provided with the packing for sealing, and is provided with O shape rubber seal between described vertical jack push rod with the lower port of described vertical jack bottom built-in fitting; Described vertical jack bottom built-in fitting is provided with Grouting Pipe.
The construction method of a kind of diplopore three of the present invention piping lane immersed tube tunnel temporary support, adopt supported at three point mode, immersed segment front end adopts nose support, the tail end of immersed segment adopts vertical jack, and vertical jack adopts the arrangement form of supported at three point, and the end support of immersed segment is arranged in the partition wall of two limit piping lanes, this construction method comprises the following steps:
Step 1: form the above-mentioned vertical jack system for diplopore three piping lane immersed tube tunnel temporary support, its step is as follows: step 1-1: immersed tube tunnel base plate is pre-buried vertical jack top built-in fitting and vertical jack bottom built-in fitting while constructing with limit partition wall, and Grouting Pipe is welded with vertical jack bottom built-in fitting, described Grouting Pipe be embedded in immersed tube tunnel base plate, one end of described Grouting Pipe exposes to described immersed tube tunnel base plate; Vertical jack is positioned in the partition wall of limit, utilize limit partition wall as the reaction frame of this vertical jack, step 1-2: vertical jack is welded with vertical jack top built-in fitting, and tighten with nut, with nut, vertical jack push rod is tightened with vertical jack 2,30cm is exposed through immersed tube tunnel base plate relative after the built-in fitting of vertical jack bottom in the lower end of vertical jack push rod, and is overlapped on temporary steel pile tube or temporary cushion block; Step 1-3: packing is filled in described vertical jack bottom built-in fitting with between vertical jack push rod, installs clamp sleeve, packing is out of shape, makes packing closely be filled between vertical jack push rod and clamp sleeve; An O shape rubber seal is established between described vertical jack push rod and the lower port of described vertical jack bottom built-in fitting;
Step 2: immersed segment is placed to design attitude place, sinks down into the lower nose support making the upper nose support of described immersed segment cost front immersed segment;
Step 3: vertical jack is released 30cm, is placed on temporary support steel pipe pile or cushion block by this release section, regulates the vertical and horizontal absolute altitude of immersed segment, immersed segment is adjusted in place;
Step 4: after immersed segment construction, by reserved Grouting Pipe, open slip casting gate valve, to the gap injection water-stop slurry between clamp sleeve and vertical jack push rod;
Step 5: slip casting basis, after sealing of hole, the weight of pipeline section is born by basis, and vertical jack push rod is recovered to the position concordant with pipe tunnel floor, and immersed segment sinking is complete.
Compared with prior art, the invention has the beneficial effects as follows:
(1) vertical jack is positioned at the partition wall of limit piping lane, utilizes limit partition wall as the reaction frame of vertical jack, to improve the stress condition of pipeline section, construct also more convenient.
(2) whole vertical jack system is made up of vertical jack top built-in fitting, vertical jack bottom built-in fitting (sleeve), vertical jack push rod, clamp sleeve, vertical jack.In pipeline section casting process, first carry out the set aside pre-embedded operation of jack.Need to consider the factors such as pipeline section longitudinal gradient in the pre-buried process of component, in pipeline section fitting-out process, by installing vertical jack and oil hydraulic system etc., by holding together of vertical jack system in advance.
(3) for guaranteeing the sealing between jack push rod and embedded sleeve barrel, in design, twice measures of preventing water is put altogether: establish the O shape rubber seal closed together in the bottom of embedded sleeve barrel; Packing, after jack push rod installation in position, is installed in the top of sleeve, and makes packing compressive strain, the gap between closely connected push rod and sleeve by clamp sleeve (adopting silk thread mouth to be connected between sleeve with embedded part).
(4) after Pipe Sinking, based process, pipeline section sedimentation tend towards stability, by Grouting Pipe reserved on sleeve, to the gap injection water-stop slurry between sleeve and push rod, make gap between the two completely closed, reach final stagnant water effect.
Accompanying drawing explanation
Fig. 1 is that in the construction method of diplopore three piping lane immersed tube tunnel temporary support of the present invention, schematic diagram arranged by vertical jack;
Fig. 2 is vertical jack structure sectional view used in the present invention;
Fig. 3 is position profile figure shown in A-A in Fig. 2;
Fig. 4 is B portion partial structurtes enlarged drawing in Fig. 2;
Fig. 5 is C portion partial structurtes enlarged drawing in Fig. 2;
Fig. 6 is the sectional view of position shown in D-D in Fig. 3;
Fig. 7 is the three-point support layout schematic diagram that the present invention adopts.
In figure:
1-vertical jack top built-in fitting 2-vertical jack 3-vertical jack bottom built-in fitting
4-vertical jack push rod 5-nut 6-clamp sleeve
7-packing 8-O shape rubber seal 9-Grouting Pipe
10-Grouting Pipe gate valve 11-limit partition wall 12-immersed tube tunnel base plate
Nose support on 13-temporary steel pile tube or temporary cushion block 14 immersed tube tunnel top board 15-1-
Nose support 16-mid-board 17-immersed segment under 15-2-
18-basis
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention is described in further detail.
As shown in Figure 2, Figure 3 and Figure 4, a kind of vertical jack system for diplopore three piping lane immersed tube tunnel temporary support of the present invention, comprise vertical jack 2, the upper end of described vertical jack 2 is welded with vertical jack top built-in fitting 1, the lower end of described vertical jack 2 is welded with vertical jack push rod 4, and described vertical jack 4 is fastening with nut 5 with between the vertical jack top built-in fitting 1 at two ends and vertical jack push rod 4 respectively; The bottom of described vertical jack push rod 4 is through vertical jack bottom built-in fitting 3, clamp sleeve 6 is provided with between described vertical jack push rod 4 with the upper port of described vertical jack bottom built-in fitting 3, described vertical jack bottom built-in fitting 3 with between described clamp sleeve 6 for being threaded, the below of described clamp sleeve 6 is provided with the packing 7 for sealing, and is provided with O shape rubber seal 8 between described vertical jack push rod 4 with the lower port of described vertical jack bottom built-in fitting 3; Described vertical jack bottom built-in fitting 3 is provided with Grouting Pipe 9.
As shown in Figure 1: be placed on by vertical jack system in structure limit partition wall 11 and immersed tube tunnel base plate 12, between vertical jack, lateral separation is large, and whole system is longitudinal, rationally lateral stressed, good stability.
As shown in Figure 2, Figure 3 and Figure 4, the construction method of above-mentioned vertical jack system formation is as follows:
Immersed tube tunnel base plate 12 is pre-buried vertical jack top built-in fitting 1 and vertical jack bottom built-in fitting 3 while constructing with limit partition wall 11, pre-buried in advance when limit partition wall 11 construction casting concrete by vertical jack top built-in fitting 1; Vertical jack bottom built-in fitting 3 is arranged in the intersection of limit partition wall 11 and immersed tube tunnel base plate 12, and it is embedded in advance in immersed tube tunnel base plate 12; As shown in Figure 2 and Figure 6, Grouting Pipe 9 is welded with vertical jack bottom built-in fitting 3, described Grouting Pipe 9 is embedded in immersed tube tunnel base plate 12, outside one end of described Grouting Pipe 9, is exposed at described immersed tube tunnel base plate more than 12, at the exposed junction of Grouting Pipe, Grouting Pipe gate valve 10 is installed; Vertical jack 2 is positioned in limit partition wall 11, utilizes limit partition wall 11 as the reaction frame of this vertical jack 2, make whole pipeline section reasonable stress, easy construction.
Vertical jack 2 is welded with vertical jack top built-in fitting 1, and tighten with nut 5, the diameter of vertical jack push rod 4 is 350mm, long 21300mm, stroke 0 ~ 730mm, with nut, vertical jack push rod 4 is tightened with vertical jack 2, by the lower end of vertical jack push rod 4 through vertical jack bottom built-in fitting 3, contact surface grease, vertical jack push rod 4 can smoothly be slided, vertical jack push rod 4 after penetrating relatively immersed tube tunnel base plate 12 exposes outside 30cm, this part exposed outside is overlapped on temporary steel pile tube or temporary cushion block 13, so far, vertical jack installs.
The vertical jack system of the present invention is provided with twice measures of preventing water, one is, packing 7 is filled in described vertical jack bottom built-in fitting 3 with between vertical jack push rod 4, clamp sleeve 6 is installed, packing 7 is out of shape, packing 7 is made closely to be filled in gap between vertical jack push rod 4 and clamp sleeve 6, to reach the effect of sealing; As shown in Figure 5, two are, between described vertical jack push rod 4 with the lower port of described vertical jack bottom built-in fitting 3, establish an O shape rubber seal 8, to reach the effect of sealing.
As shown in Figure 1: be placed on by vertical jack system in structure limit partition wall 11 and immersed tube tunnel base plate 12, between vertical jack, lateral separation is large, and whole system is longitudinal, rationally lateral stressed, good stability.
The construction method of a kind of diplopore three of the present invention piping lane immersed tube tunnel temporary support, as shown in Figure 7, adopt supported at three point mode, the front end of immersed segment 17 adopts nose support, the tail end of immersed segment 17 adopts vertical jack, and vertical jack adopts the arrangement form of supported at three point, and the end support of immersed segment 17 is arranged in the partition wall of two limit piping lanes, and this construction method comprises the following steps:
Immersed segment 17 is placed to design attitude place, sinks down into the lower nose support 15-2 making the upper nose support 15-1 of described immersed segment 17 cost front immersed segment; Utilize upper and lower nose support positioning precision high, cantilever is less, and stress is good.
Vertical jack 2 is released the outer 30cm of relative immersed tube tunnel base plate 12, this release section is placed on temporary support steel pipe pile or cushion block 13, after nose support 15-1 installs, pipeline section is in place, vertical jack 2 starts to play temporary support effect, regulate the vertical and horizontal absolute altitude of immersed segment 17, immersed segment 17 is adjusted in place.As shown in Figure 7, adopt supported at three point location, its positioning precision is high, required diver and the diver work time short, difficulty of construction is relatively low.
Immersed segment 17 adjust in place after, carry out the construction of immersed segment 17, after construction, open slip casting gate valve 10, and control grouting amount and injection speed by slip casting gate valve 10, by reserved Grouting Pipe 9 to the gap injection water-stop slurry between clamp sleeve 6 and vertical jack push rod 4, control grouting amount and injection speed by slip casting gate valve 10, slip casting index is 10kg/cm
2, reach the effect of sealing.
Slip casting basis 18, after sealing of hole, the weight of pipeline section is born by basis 18, and vertical jack push rod 4 is recovered to the position concordant with pipe tunnel floor 12, and immersed segment 17 sinking is complete.
Although invention has been described for composition graphs above; but the present invention is not limited to above-mentioned detailed description of the invention; above-mentioned detailed description of the invention is only schematic; instead of it is restrictive; those of ordinary skill in the art is under enlightenment of the present invention; when not departing from present inventive concept, can also make a lot of distortion, these all belong within protection of the present invention.
Claims (3)
1. the vertical jack system for diplopore three piping lane immersed tube tunnel temporary support, comprise vertical jack (2), it is characterized in that, the upper end of described vertical jack (2) is welded with vertical jack top built-in fitting (1), the lower end of described vertical jack (2) is welded with vertical jack push rod (4), and described vertical jack (2) is fastening with nut (5) with between vertical jack top built-in fitting (1) at two ends and vertical jack push rod (4) respectively, the bottom of described vertical jack push rod (4) is through vertical jack bottom built-in fitting (3), clamp sleeve (6) is provided with between described vertical jack push rod (4) with the upper port of described vertical jack bottom built-in fitting (3), described vertical jack bottom built-in fitting (3) with between described clamp sleeve (6) for being threaded, the below of described clamp sleeve (6) is provided with the packing (7) for sealing, O shape rubber seal (8) is provided with between described vertical jack push rod (4) with the lower port of described vertical jack bottom built-in fitting (3), described vertical jack bottom built-in fitting (3) is provided with Grouting Pipe (9).
2. the construction method of a diplopore three piping lane immersed tube tunnel temporary support, it is characterized in that, adopt supported at three point mode, the front end of immersed segment adopts nose support, the tail end of immersed segment adopts vertical jack, and vertical jack adopts the arrangement form of supported at three point, and the end support of immersed segment is arranged in the partition wall of two limit piping lanes, and this construction method comprises the following steps:
Step 1: formed as claimed in claim 1 for the vertical jack system of diplopore three piping lane immersed tube tunnel temporary support, its step is as follows:
Step 1-1: immersed tube tunnel base plate (12) is pre-buried vertical jack top built-in fitting (1) and vertical jack bottom built-in fitting (3) while constructing with limit partition wall (11), and Grouting Pipe (9) is welded with vertical jack bottom built-in fitting (3), described Grouting Pipe (9) be embedded in immersed tube tunnel base plate (12), one end of described Grouting Pipe (9) exposes to described immersed tube tunnel base plate (12); Vertical jack (2) is positioned in limit partition wall (11), utilizes limit partition wall (11) as the reaction frame of this vertical jack (2),
Step 1-2: vertical jack (2) is welded with vertical jack top built-in fitting (1), and tighten with nut (5), with nut, vertical jack push rod (4) is tightened with vertical jack (2), by the lower end of vertical jack push rod (4) through vertical jack bottom built-in fitting (3) afterwards relatively immersed tube tunnel base plate (12) expose 30cm, and be overlapped on temporary steel pile tube or temporary cushion block (13);
Step 1-3: packing (7) is filled in described vertical jack bottom built-in fitting (3) with between vertical jack push rod (4), clamp sleeve (6) is installed, packing (7) is out of shape, makes packing (7) closely be filled between vertical jack push rod (4) and clamp sleeve (6); An O shape rubber seal (8) is established between described vertical jack push rod (4) with the lower port of described vertical jack bottom built-in fitting (3);
Step 2: immersed segment (17) is placed to design attitude place, sinks down into the lower nose support (15-2) making the upper nose support (15-1) of described immersed segment (17) cost front immersed segment;
Step 3: vertical jack (2) is pushed out to relative immersed tube tunnel base plate (12) and exposes 30cm place, this release section is placed on temporary support steel pipe pile or cushion block (13), regulate the vertical and horizontal absolute altitude of immersed segment (17), make immersed segment (17) adjust in place;
Step 4: after immersed segment (17) installs, by reserved Grouting Pipe (9), open slip casting gate valve (10), to the gap injection water-stop slurry between clamp sleeve (6) and vertical jack push rod (4);
Step 5: slip casting basis (18), after sealing of hole, the weight of pipeline section is born by basis (18), and vertical jack push rod (4) is recovered to the position concordant with pipe tunnel floor (12), and immersed segment (17) sinking is complete.
3. the construction method of diplopore three piping lane immersed tube tunnel temporary support according to claim 2, is characterized in that, wherein, in step 4, control grouting amount and injection speed by slip casting gate valve (10), slip casting index is 10kg/cm
2.
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| CN201410022411.0A CN103758150B (en) | 2014-01-17 | 2014-01-17 | The construction method of diplopore three piping lane immersed tube tunnel temporary support and vertical jack thereof |
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| CN201410022411.0A CN103758150B (en) | 2014-01-17 | 2014-01-17 | The construction method of diplopore three piping lane immersed tube tunnel temporary support and vertical jack thereof |
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| CN103758150B true CN103758150B (en) | 2015-10-28 |
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| CN117779776B (en) * | 2024-02-26 | 2024-05-10 | 中交第一航务工程局有限公司 | Post-grouting method for final joint foundation of immersed tube |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3973119B2 (en) * | 1998-07-07 | 2007-09-12 | 鹿島建設株式会社 | Method and apparatus for moving underwater structure underwater |
| CN202577348U (en) * | 2012-04-07 | 2012-12-05 | 中铁十八局集团有限公司 | Temporary support of pipe section of immersed tunnel |
| CN203296065U (en) * | 2013-06-06 | 2013-11-20 | 中铁隧道勘测设计院有限公司 | Adjustable, detachable and reusable nose supporting guide device of immersed tunnel |
| CN203393743U (en) * | 2013-06-06 | 2014-01-15 | 交通运输部广州打捞局 | Reusable external immersed tube tunnel vertical supporting device |
-
2014
- 2014-01-17 CN CN201410022411.0A patent/CN103758150B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3973119B2 (en) * | 1998-07-07 | 2007-09-12 | 鹿島建設株式会社 | Method and apparatus for moving underwater structure underwater |
| CN202577348U (en) * | 2012-04-07 | 2012-12-05 | 中铁十八局集团有限公司 | Temporary support of pipe section of immersed tunnel |
| CN203296065U (en) * | 2013-06-06 | 2013-11-20 | 中铁隧道勘测设计院有限公司 | Adjustable, detachable and reusable nose supporting guide device of immersed tunnel |
| CN203393743U (en) * | 2013-06-06 | 2014-01-15 | 交通运输部广州打捞局 | Reusable external immersed tube tunnel vertical supporting device |
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| CN103758150A (en) | 2014-04-30 |
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Address after: 300051 No. 239, Yingkou Road, Heping District, Tianjin Patentee after: Tianjin municipal engineering design and Research Institute Co.,Ltd. Patentee after: SHANGHAI TUNNEL ENGINEERING & RAIL TRANSIT DESIGN AND Research Institute Address before: 300051 No. 239, Yingkou Road, Heping District, Tianjin Patentee before: TIANJIN MUNICIPAL ENGINEERING DESIGN & Research Institute Patentee before: SHANGHAI TUNNEL ENGINEERING & RAIL TRANSIT DESIGN AND Research Institute |