CN202787339U - Immersed tube inner portion rectifying and adjusting system - Google Patents
Immersed tube inner portion rectifying and adjusting system Download PDFInfo
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- CN202787339U CN202787339U CN 201220270266 CN201220270266U CN202787339U CN 202787339 U CN202787339 U CN 202787339U CN 201220270266 CN201220270266 CN 201220270266 CN 201220270266 U CN201220270266 U CN 201220270266U CN 202787339 U CN202787339 U CN 202787339U
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- immersed tube
- jack
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- mandril
- inner portion
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Abstract
The utility model relates to an immersed tube inner portion rectifying and adjusting system. The immersed tube inner portion rectifying and adjusting system comprises a control system and a mechanical system. The mechanical system comprises a hydraulic power pack, a jack group and a jack ejecting rod group. The jack group is arranged at the front end of an immersed tube to be installed through a crack. The jack ejecting rod group is arranged at the tail end of the immersed tube to be installed and the tail end of an installed immersed tube through a flange. The jack group is a group of jacks formed by a plurality of jacks capable of limiting and jacking, wherein the plurality of jacks capable of limiting and jacking are connected together through a fixing rack. The jack ejecting rod group is a group of jack ejecting rods formed by a plurality of jack ejecting rods, wherein the plurality of jack ejecting rods are connected together. The immersed tube inner portion rectifying and adjusting system is simple and reasonable in structure, convenient to operate, capable of being placed into a combining cavity between the immersed tube and the immersed tube to be installed to rectifying the inner portion of the immersed tube when the immersed tube is installed, having no requirement for a gravel bed, and being hardly influenced by natural conditions like waves, currents, winds and the like during adjusting process, accurate in positioning and installing, time-saving and labour-saving.
Description
Technical field
The utility model relates to the immersed tube tunnel construction technology, specifically, relates to the inner correction of immersed tube regulating system in a kind of immersed tube tunnel work progress.
Background technology
Immersed tunnelling method is a kind of job practices in building tunnel, the bottom.Immersed tube tunnel be exactly with several prefabricated section respectively transportation by driving to the sea (river surface) scene, and sinking is installed in the foundation trench of having dredged one by one, the submerged tunnel of building with the method.At present, in the immersed tube tunnel work progress, in order to improve the planarization of trench bottom surfaces, the subaqueous tunnel that the overwhelming majority builds up all adopts the method for leveling up.Wherein, the early stage method of leveling up that mostly adopts be a kind of before Pipe Sinking first sanding masonry be the first shop method of bed course, it is by hoist engine and the special shop machine of scraping or the steel plough of cable control on operation ship, the guide rail that arrange, that have regulation absolute altitude and the gradient along the trench bottom surfaces both sides, the bedding and padding that put down are back and forth struck off, and this method shortcoming is more; The method that another kind is leveled up is filled out method after being, namely first with Pipe Sinking on the temporary support on the trench bottom, and (default hydraulic jack in the pipeline section base plate can be pushed up to bearing when the location to make the pipe end form certain space, regulate the pipeline section elevation), use subsequently the course filling closely knit.In above-mentioned two kinds of methods, the purpose of processing sinking pipeline section basis is to make trench bottom surfaces smooth, rather than in order to improve the bearing capacity of ground, the groove that excavates under water, its bottom surface is uneven, as not flattened, can cause local failure because of the ground discontinuity behind the Pipe Sinking, or ftracture because of differential settlement.
The essential condition that is suitable for the immersed tunnelling method construction is: water channel stabilization of river bed and current are not too urgent.Large in the depth of water, when the immersed tube aspect ratio is large, need obviously to increase the jack configuration, usually adopt sinking to refute assisted Extraction and feed to the power of hanging oneself to reduce immersed tube to bedding frictional force, refute by sinking and assist installation stricter to the wave height requirement, general job wave height requirement≤0.4m.At present, adopt sinking to refute auxiliary case of installing and only have Pusan-huge Ji immersed tube tunnel and Oresund immersed tube tunnel, wherein, Pusan-huge Ji immersed tube tunnel is to operation wave height requirement≤0.4m; In the immersed tube tunnel construction of Oresund, can find out that from map formed shielding around the job site, sea situation is better.And when requiring greater than 0.4m for wave height, owing to be subjected to the impact of the natural conditions such as wave, current, wind, when adopting sinking to refute auxiliary the installation, the power amplitude of variation of hanging is very large, and larger to control effect is installed, jack thrust is large, the control difficulty, and installation accuracy is inaccurate, needs the time to adjust, and wastes time and energy.
The utility model content
The utility model is for having the problems referred to above such as the thrust that existed by the effect of natural conditions such as wave, current, wind when immersed tube is installed in the immersed tube tunnel work progress is large, control is difficult, waste time and energy now, the inner correction of a kind of immersed tube accurate adjustment system is provided, this system is positioned at the binding cavity that immersed tube and immersed tube to be installed are installed when using, to the no requirement (NR) of rubble bedding, the immersed tube correction when being applicable to the immersed tube tunnel construction.
The technical solution of the utility model is: the inner correction of a kind of immersed tube accurate adjustment system, this system comprises control system and mechanical system, mechanical system comprises hydraulic power unit, jack group and mandril of lifting jack group, the jack group is installed in the front end of immersed tube to be installed by support, and the mandril of lifting jack group is installed in immersed tube to be installed by flange and the tail end of immersed tube has been installed; The jack group is for will be a plurality of by fixed mount having one group of jack that jack spacing, the pushing tow function links together, and the mandril of lifting jack group is the one group of mandril of lifting jack that a plurality of mandril of lifting jacks is linked together by fixed mount.
Preferably, the quantity of jack is identical with the quantity of mandril of lifting jack in the mandril of lifting jack group in the jack group.
Preferably, jack and mandril of lifting jack are provided with 6.
Preferably, jack and mandril of lifting jack are provided with 4 or 8 or 10.
Preferably, control system and hydraulic power unit all are placed on and install in the immersed tube.
The beneficial effects of the utility model are: the utility model correction accurate adjustment system architecture advantages of simple, easy to operate, when immersed tube is installed, be positioned in the binding cavity that immersed tube and immersed tube to be installed are installed, be used for the inside correction of immersed tube, to the no requirement (NR) of rubble bedding, and reduce the impact of the natural conditions such as wave, current, wind in the adjustment process by heave compensator, and by control system control installation, accurate positioning, installation accuracy is high, and is time saving and energy saving.
Description of drawings
The plane structure schematic diagram of accompanying drawing 1 the utility model specific embodiment immersed tube jack to be installed group and mandril of lifting jack group.
Accompanying drawing 2 is the partial enlarged drawing of A part in the utility model specific embodiment accompanying drawing 1.
Accompanying drawing 3 is immersed tube to connect the flat surface structural representation after the crimping of the utility model specific embodiment waterpower.
Accompanying drawing 4 is the A-A cross-sectional view of the utility model accompanying drawing 3.
Accompanying drawing 5 is the jack state diagram of the utility model specific embodiment after adjusting.
Accompanying drawing 6 is immersed tube mounting plane structural representation after the crimping of the utility model specific embodiment sinking waterpower is finished.
Accompanying drawing 7 is in the immersed tube installation that moves horizontally critical condition for the utility model specific embodiment jack thrust overcomes friction
The plane structure schematic diagram.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described further.
The inner correction of a kind of immersed tube accurate adjustment system, this system comprises control system and mechanical system, mechanical system comprises hydraulic power unit, jack group 1 and mandril of lifting jack group 2, jack group 1 is installed in the front end of immersed tube to be installed by support, and mandril of lifting jack group 2 is installed in immersed tube to be installed by flange 3 and the tail end of immersed tube has been installed; Control system and hydraulic power unit all are placed on and install in the immersed tube.Jack group 1 will be for will a plurality ofly having one group of jack that jack 5 spacing, the pushing tow function links together by fixed mount 4, and mandril of lifting jack group 2 is the one group of mandril of lifting jack that a plurality of mandril of lifting jacks 6 is linked together by fixed mount 4.The quantity of jack 5 is identical with the quantity of mandril of lifting jack 6 in the mandril of lifting jack group 2 in the jack group 1.Jack 5 and mandril of lifting jack 6 are provided with 6.
Its adjusting process step is:
(1) installation of the inner correction of immersed tube accurate adjustment system: being installed in the depressed place of the inner correction of immersed tube accurate adjustment system jack carried out, six jack are connected to one group by fixed support, during the secondary fitting-out jack group is fixedly mounted on the front end of immersed tube to be installed by support, and leave oil pipe, displacement data wire terminal, do waterproofing work; The installation industry of the inner correction of immersed tube accurate adjustment system mandril of lifting jack is carried out in the depressed place, by flange mandril of lifting jack is connected with the immersed tube section, is installed in the tail end of immersed tube to be installed.
(2) immersed tube sinking, waterpower crimping: immersed tube sinking, drawing, waterpower crimping, after the crimping of immersed tube waterpower was finished, waterstop evenly compressed under the least favorable state, and as shown in Figure 6, wherein, f is frictional force.
(3) holing through survey: after the crimping of immersed tube waterpower is finished, open the steel measured hole of sealing up a door and carry out holing through survey, do not adjust when tube coupling level and tunnel axis deviation≤35mm, carry out immersed tube tail end lateral adjustments to be installed by the inner correction of immersed tube regulating system when tube coupling level and tunnel axis deviation＞35mm, until immersed tube misalignment of axe to be installed meets the demands.
(4) circuit and push rod connect: when needing to regulate, open steel and seal up a door the connection of jack group pipeline, and with mandril of lifting jack group docking jack group, manual debugging puts in place, as shown in Figure 7, and after the installation jack puts in place, the jack thrust overcome friction is in and moves horizontally critical condition, wherein, A end jack is spacing, B end jack pushing tow, f is frictional force, at this moment, B end pushing tow jack thrust increases, and direction is opposite with original direction.
(5) the inner correction of immersed tube accurate adjustment system correction: hydraulic power unit and control system are placed on installs in the immersed tube, circuit be connected with the mandril of lifting jack group finish after, it is spacing first A to be held spacing jack to apply the pre-jacking force locking, B end pushing tow jack applies pre-jacking force, frictional force f direction begins to change, and then sets and regulates the jack stroke; Operating period closes steel and seals up a door, and keeps the measured hole open mode; Two sinkings refute simultaneously that lifting reduces immersed tube to be installed to bedding pressure, guarantee that immersed tube to be installed is not less than 400t to bedding pressure, and refute the passive heave compensator that arranges on the hanger rope by sinking and reduce wave to the impact of the power of hanging; B end pushing tow jack begins to load rectifies a deviation, and immersed tube to be installed begins to hold spacing jack rotation around A during correction, reach default stroke after, the inner correction of immersed tube regulating system stops pushing tow, the off-load sinking is refuted the power of hanging.
(6) Real-Time Monitoring: the operating period of rectifying a deviation utilizes total powerstation by measured hole observation immersed tube tail end correction situation.
(7) jack group unloading: before the unloading of jack group, after employing added Ballast Water maximal density 5% negative buoyancy force, immersed tube to be installed satisfied in 1.3m/s flow velocity drag force and the requirement of effect of water pressure stability inferior as calculated; For guaranteeing safety, after the locking backfill, more synchronously, the spacing jack of load shedding and pushing tow jack top power, observe simultaneously immersed tube tail end stable case.
(8) correction is finished: after immersed tube correction to be installed is finished, remove the inner correction of immersed tube regulating system.
According to the differences such as length of immersed tube to be installed and immersed tube tunnel, jack and mandril of lifting jack all can also be set to 4 or 8 or 10.
The above specific embodiment is only unrestricted in order to the technical solution of the utility model to be described, although with reference to preferred embodiment the utility model is had been described in detail, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from the spirit and scope of technical solutions of the utility model, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (5)
1. the inner correction of immersed tube accurate adjustment system, it is characterized in that: this system comprises control system and mechanical system, mechanical system comprises hydraulic power unit, jack group and mandril of lifting jack group, the jack group is installed in the front end of immersed tube to be installed by support, and the mandril of lifting jack group is installed in immersed tube to be installed by flange and the tail end of immersed tube has been installed; The jack group is for will be a plurality of by fixed mount having one group of jack that jack spacing, the pushing tow function links together, and the mandril of lifting jack group is the one group of mandril of lifting jack that a plurality of mandril of lifting jacks is linked together by fixed mount.
2. the inner correction of immersed tube as claimed in claim 1 accurate adjustment system, it is characterized in that: the quantity of jack is identical with the quantity of mandril of lifting jack in the mandril of lifting jack group in the jack group.
3. such as claim 1 or the inner correction of the described immersed tube of 2 any one accurate adjustment system, it is characterized in that: jack and mandril of lifting jack are provided with 6.
4. such as claim 1 or the inner correction of the described immersed tube of 2 any one accurate adjustment system, it is characterized in that: jack and mandril of lifting jack are provided with 4 or 8 or 10.
5. the inner correction of immersed tube as claimed in claim 1 accurate adjustment system, it is characterized in that: control system and hydraulic power unit all are placed on and install in the immersed tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220270266 CN202787339U (en) | 2012-06-11 | 2012-06-11 | Immersed tube inner portion rectifying and adjusting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220270266 CN202787339U (en) | 2012-06-11 | 2012-06-11 | Immersed tube inner portion rectifying and adjusting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202787339U true CN202787339U (en) | 2013-03-13 |
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ID=47814621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220270266 Expired - Lifetime CN202787339U (en) | 2012-06-11 | 2012-06-11 | Immersed tube inner portion rectifying and adjusting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202787339U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102691314A (en) * | 2012-06-11 | 2012-09-26 | 中交一航局第二工程有限公司 | Internal deviation correcting fine adjusting system and adjusting technology for immersed tubes |
-
2012
- 2012-06-11 CN CN 201220270266 patent/CN202787339U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102691314A (en) * | 2012-06-11 | 2012-09-26 | 中交一航局第二工程有限公司 | Internal deviation correcting fine adjusting system and adjusting technology for immersed tubes |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130313 |
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| CX01 | Expiry of patent term |