CN103758150A - Method for constructing temporary support of twin-bore immersed tube tunnel with three tube corridors and perpendicular jack of temporary support - Google Patents
Method for constructing temporary support of twin-bore immersed tube tunnel with three tube corridors and perpendicular jack of temporary support Download PDFInfo
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- CN103758150A CN103758150A CN201410022411.0A CN201410022411A CN103758150A CN 103758150 A CN103758150 A CN 103758150A CN 201410022411 A CN201410022411 A CN 201410022411A CN 103758150 A CN103758150 A CN 103758150A
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Abstract
The invention discloses a perpendicular jack system for a temporary support of a twin-pore immersed tube tunnel with three tube corridors. The perpendicular jack system comprises a perpendicular jack. An upper embedded part of the perpendicular jack is welded at the upper end of the perpendicular jack, a push rod of the perpendicular jack is welded at the lower end of the perpendicular jack, and the perpendicular jack is respectively fastened with the upper embedded part and the push rod, which are arranged at the two ends of the perpendicular jack, by bolts; the lower portion of the push rod penetrates a lower embedded part of the perpendicular jack, a compression sleeve is arranged between the push rod and an upper port of the lower embedded part, the lower embedded part is connected with the compression sleeve in a threaded manner, sealing packing is arranged below the compression sleeve, and an O-shaped rubber sealing ring is arranged between the push rod and a lower port of the lower embedded part; a grouting tube is arranged on the lower embedded part. The perpendicular jack system has the advantages that a three-point support mode is adopted, in other word, nose supports are arranged at the front end of a tube section, the perpendicular jack is arranged at the tail end of the tube section, the tail section of the tube section is arranged in partition walls of two side tube corridors in a supported manner, a transverse distance is long, accordingly, longitudinal and transverse structures of the integral tube section are stressed reasonably, the tube section is good in integral stability in tube section pull-in procedures, and the quantity of structure reinforcing steel bars can be correspondingly reduced.
Description
Technical field
The present invention relates to a kind of immersed tube tunnel temporary support structure, relate in particular to the temporary support structure that a kind of pipeline section sinks after in place.
Background technology
Temporary support method after pipeline section sinking is in place, conventionally in butt end nose support, the other end supports with vertical jack, also has the precedent of the vertical jack of whole employings.Take a broad view of the domestic built immersed tube tunnel being 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 need to configure four supporting jack and corresponding four temporary supports, replaces the effect of jack near two supporting jack of tube coupling butt end.But now need to place two docking positioning beam at the tube coupling end face being sunk to, on the end face of the previous tube coupling that sinking is good, docking positioning seat is set.The weak point that adopts four-point supporting mode mainly to exist is: at the bottom of positioning precision, and four-point supporting adjusted design absolute altitude, required diver and diver work time increase, and difficulty of construction is large.
Summary of the invention
For above-mentioned prior art, the construction method that the invention provides a kind of diplopore three piping lane immersed tube tunnel temporary supports, the present invention adopts supported at three point mode, and front end adopts nose support, end adopts vertical jack, the vertically arrangement form of jack employing 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, safety, reliable, and construction quality is guaranteed, and good water-proof effect can effectively reduce construction risk and save construction investment, and similar immersed tube technique tunnel is had to good directive significance.
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 supports 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, described vertical jack respectively with the vertical jack top built-in fitting at two ends and vertical jack push rod between fastening with nut; The bottom of described vertical jack push rod is through vertical jack bottom built-in fitting, between the upper port of described vertical jack push rod and described vertical jack bottom built-in fitting, be provided with clamp sleeve, between described vertical jack bottom built-in fitting and described clamp sleeve for being threaded, the below of described clamp sleeve is provided with the packing for sealing, and between the lower port of described vertical jack push rod and described vertical jack bottom built-in fitting, is provided with O shape rubber seal; Described vertical jack bottom built-in fitting is provided with Grouting Pipe.
The construction method of a kind of diplopore three piping lane immersed tube tunnel temporary supports of the present invention, 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, and 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 supports, its step is as follows: step 1-1: pre-buried vertical jack top built-in fitting and vertical jack bottom built-in fitting when immersed tube tunnel base plate is constructed with limit partition wall, and Grouting Pipe is welded with vertical jack bottom built-in fitting, described Grouting Pipe is embedded in immersed tube tunnel base plate, and 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 to through relative immersed tube tunnel base plate after the built-in fitting of vertical jack bottom in the lower end of vertical jack push rod, and be overlapped on temporary steel pile tube or temporary cushion block; Step 1-3: packing is filled between described vertical jack bottom built-in fitting and vertical jack push rod, clamp sleeve is installed, make packing distortion, packing is closely filled between vertical jack push rod and clamp sleeve; Between the lower port of described vertical jack push rod and described vertical jack bottom built-in fitting, establish an O shape rubber seal;
Step 2: immersed segment is placed to design attitude place, sinks down into the lower nose support that makes the upper nose support of described immersed segment cost front immersed segment;
Step 3: vertical jack is released to 30cm, this release section is placed on temporary support steel pipe pile or cushion block, regulate 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 managing 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 to 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 comprised 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.In the pre-buried process of member, need to consider the factors such as pipeline section longitudinal gradient, in pipeline section fitting-out process, by vertical jack and oil hydraulic system etc. are installed, by holding together of vertical jack system in advance.
(3) for to guarantee the sealing between jack push rod and embedded sleeve barrel, in design, put altogether twice measures of preventing water: the O shape rubber seal of establishing one sealing 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 (sleeve with between embedded part adopt silk thread mouth to be connected).
(4), after Pipe Sinking, based process, pipeline section sedimentation tend towards stability, by Grouting Pipe reserved on sleeve, the gap injection water-stop slurry between sleeve and push rod, seals gap between the two completely, reaches final stagnant water effect.
Accompanying drawing explanation
Fig. 1 is that in the construction method of diplopore three piping lane immersed tube tunnel temporary supports of the present invention, vertical jack is arranged schematic diagram;
Fig. 2 is vertical jack structure sectional view used in the present invention;
Fig. 3 is the figure of position profile 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:
The vertical jack of the 1-top built-in fitting 2-vertical jack of vertical jack 3-bottom built-in fitting
The vertical jack push rod of 4-5-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
The upper nose support of 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
The specific embodiment
Below in conjunction with the specific embodiment, 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 supports 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, described vertical jack 4 respectively with the vertical jack top built-in fitting 1 at two ends and vertical jack push rod 4 between fastening with nut 5; The bottom of described vertical jack push rod 4 is through vertical jack bottom built-in fitting 3, between the upper port of described vertical jack push rod 4 and described vertical jack bottom built-in fitting 3, be provided with clamp sleeve 6, between described vertical jack bottom built-in fitting 3 and described clamp sleeve 6 for being threaded, the below of described clamp sleeve 6 is provided with the packing 7 for sealing, and between the lower port of described vertical jack push rod 4 and described vertical jack bottom built-in fitting 3, is provided with O shape rubber seal 8; Described vertical jack bottom built-in fitting 3 is provided with Grouting Pipe 9.
As shown in Figure 1: vertical jack system is placed in structure limit partition wall 11 and immersed tube tunnel base plate 12, and between vertical jack, lateral separation is large, and whole system is longitudinal, lateral stressed rationally, good stability.
As shown in Figure 2, Figure 3 and Figure 4, the construction method that above-mentioned vertical jack system forms is as follows:
When immersed tube tunnel base plate 12 is constructed with limit partition wall 11, pre-buried vertical jack top built-in fitting 1 and vertical jack bottom built-in fitting 3, be about to vertical jack top built-in fitting 1 pre-buried in advance when limit partition wall 11 construction casting concrete; Vertical jack bottom built-in fitting 3 is arranged in to the intersection of limit partition wall 11 and immersed tube tunnel base plate 12, and it is embedded in immersed tube tunnel base plate 12 in advance; As shown in Figure 2 and Figure 6, by Grouting Pipe 9 and 3 welding of vertical jack bottom built-in fitting, 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.
By vertical jack 2 and 1 welding of vertical jack top built-in fitting, 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, vertical jack bottom built-in fitting 3 is passed in the lower end of vertical jack push rod 4, contact surface grease, vertical jack push rod 4 can smoothly be slided, the relative immersed tube tunnel base plate 12 of vertical jack push rod 4 after penetrating exposes outside 30cm, this part exposing 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, the one,, packing 7 is filled between described vertical jack bottom built-in fitting 3 and vertical jack push rod 4, clamp sleeve 6 is installed, make packing 7 distortion, make packing 7 closely be filled in the gap between vertical jack push rod 4 and clamp sleeve 6, to reach the effect of sealing; As shown in Figure 5, the 2nd,, between the lower port of described vertical jack push rod 4 and 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: vertical jack system is placed in structure limit partition wall 11 and immersed tube tunnel base plate 12, and between vertical jack, lateral separation is large, and whole system is longitudinal, lateral stressed rationally, good stability.
The construction method of a kind of diplopore three piping lane immersed tube tunnel temporary supports of the present invention, 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 the vertically arrangement form of jack employing 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:
After immersed segment 17 adjustment are in place, 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, by slip casting gate valve 10, control grouting amount and injection speed, slip casting index is 10kg/cm
2, reach the effect of sealing.
Although in conjunction with figure, invention has been described above; but the present invention is not limited to the above-mentioned specific embodiment; the above-mentioned specific embodiment is only schematic; rather than restrictive; those of ordinary skill in the art is under enlightenment of the present invention; in the situation that not departing from aim of the present invention, can also make a lot of distortion, within these all belong to protection of the present invention.
Claims (3)
1. the vertical jack system for diplopore three piping lane immersed tube tunnel temporary supports, 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), described vertical jack (4) respectively with the vertical jack top built-in fitting (1) at two ends and vertical jack push rod (4) between fastening with nut (5); The bottom of described vertical jack push rod (4) is through vertical jack bottom built-in fitting (3), between the upper port of described vertical jack push rod (4) and described vertical jack bottom built-in fitting (3), be provided with clamp sleeve (6), between described vertical jack bottom built-in fitting (3) and described clamp sleeve (6) for being threaded, the below of described clamp sleeve (6) is provided with the packing (7) for sealing, and between the lower port of described vertical jack push rod (4) and described vertical jack bottom built-in fitting (3), is provided with O shape rubber seal (8); Described vertical jack bottom built-in fitting (3) is provided with Grouting Pipe (9).
2. the construction method of diplopore three piping lane immersed tube tunnel temporary supports, 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 the vertically arrangement form of jack employing 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: form the vertical jack system for diplopore three piping lane immersed tube tunnel temporary supports as claimed in claim 1, its step is as follows:
Step 1-1: pre-buried vertical jack top built-in fitting (1) and vertical jack bottom built-in fitting (3) when immersed tube tunnel base plate (12) is constructed with limit partition wall (11), and 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), and 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 2,30cm is exposed to through relative immersed tube tunnel base plate (12) after vertical jack bottom built-in fitting (3) in the lower end of vertical jack push rod (4), and be overlapped on temporary steel pile tube or temporary cushion block (13);
Step 1-3: packing (7) is filled between described vertical jack bottom built-in fitting (3) and vertical jack push rod (4), clamp sleeve (6) is installed, make packing (7) distortion, packing (7) is closely filled between vertical jack push rod (4) and clamp sleeve (6); Between the lower port of described vertical jack push rod (4) and described vertical jack bottom built-in fitting (3), establish an O shape rubber seal (8);
Step 2: immersed segment (17) is placed to design attitude place, sinks down into the lower nose support (15-2) that makes 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), the vertical and horizontal absolute altitude that regulates immersed segment (17), makes 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 managing tunnel floor (12), and immersed segment (17) sinking is complete.
3. the construction method of diplopore three piping lane immersed tube tunnel temporary supports according to claim 2, is characterized in that, wherein, in step 4, by slip casting gate valve (10), controls grouting amount and injection speed, and slip casting index is 10kg/cm
2.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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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| CN103758150A true CN103758150A (en) | 2014-04-30 |
| CN103758150B CN103758150B (en) | 2015-10-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117779776A (en) * | 2024-02-26 | 2024-03-29 | 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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117779776A (en) * | 2024-02-26 | 2024-03-29 | 中交第一航务工程局有限公司 | Post-grouting method for final joint foundation of immersed tube |
| 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 |
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| CN103758150B (en) | 2015-10-28 |
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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 |
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