CN204825835U - From jacket platform that restores to throne - Google Patents
From jacket platform that restores to throne Download PDFInfo
- Publication number
- CN204825835U CN204825835U CN201520434117.0U CN201520434117U CN204825835U CN 204825835 U CN204825835 U CN 204825835U CN 201520434117 U CN201520434117 U CN 201520434117U CN 204825835 U CN204825835 U CN 204825835U
- Authority
- CN
- China
- Prior art keywords
- platform
- steel pipe
- conduit
- bellows
- pull rod
- 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.)
- Withdrawn - After Issue
Links
Landscapes
- Revetment (AREA)
Abstract
The utility model belongs to structural engineering field among the civil engineering, in order to solve the not good problem of original platform anti -seismic performance, the utility model provides a from jacket platform that restores to throne that rigidity is big, intensity is high, the construction is convenient, the anti vibration is effectual, the durability is high. The utility model discloses a from jacket platform that restores to throne, by platform frame and platform structure, platform installation is equipped with a plurality of platform stulls and platform bracing between the platform pipe on platform frame, the outer steel pipe of platform pipe, interior steel pipe, bellows are established and are coaxial to the endotheca by outer, equal with dissection concrete between outer steel pipe and the interior steel pipe, between interior steel pipe and the bellows, location cant chisei setting is on outer steel pipe, but its and interior steel pipe swing joint, the built -in reinforcing pull rod setting of prestressing force inside the bellows, the outside of stiffening rib fixed connection steel pipe outside, the top of platform pipe is fixed and is equipped with the ring flange, connectivity platform or continue and connect a platform pipe on the ring flange.
Description
Technical field
The utility model belongs to the Structural Engineering field in civil engineering, particularly a kind of Self-resetting offshore jacket platforms.
Background technology
There is abundant petroleum resources in China marine site.Along with the demand of economic construction to the energy not only strengthens, gas and oil in sea exploitation has good development prospect and huge development potentiality.Ocean platform is as the infrastructure of marine resources development, and catheter type ocean platform is the primary structure form of middle shallow sea ocean platform.It adopts and makes prefabricated jacket be fixed on sea through conduit leg stake, and jacket and stake are main load-supporting parts, and miscellaneous equipment layer and workspace are then seated on platform.Under the marine environment dynamic load functions such as wind, wave, stream, ice and earthquake, the dynamic respons of structure is very violent.
Traditional antivibration method mainly reduces structural vibration by improving structural element strength and stiffness, but when carrying out resisting structure vibration by this method, the comfort level of structure can not meet the demands usually.Although the civil engineering structure passive energy dissipation system proposed in recent years and base isolation system effectively can alleviate the dynamic respons of structure but also there is certain problem.
In now known possible technique scheme, for the vibration isolation of catheter type offshore platform structure, on the one hand, mainly adopt vibration isolation measure or adopt various damper to carry out antivibration, but although vibration isolation measure can control the displacement of jacket end cap and living area acceleration preferably, but be not suitable for the load such as tsunami, hurricane, easily topple.Although patent No. CN1414183A considers that common Seismic Isolation of Isolation Layer can produce unacceptable over-large displacement, be provided with stop, Local Damping is converted into integrally-built damping, thus alleviate structural entity dynamic respons.But the offshore jacket platforms rigidity of structure is comparatively large, displacement is less, and displacement relationship type energy consumer can not play too large effect.As a same reason, for velocity correlation type energy consumer, also play space also not too large.On the other hand, damper is added in ocean platform outside, realize the vibration isolation to ocean platform, the ability that Offshore platform jacket structure entirety can be made to resist external loads as patent No. CN103572853A vibration insulating system increases, as ice loading, unrestrained load, wind load, seismic load, or even tsunami.But structural damping device adopts memory alloy damper cost higher.Meanwhile, patent No. CN103195040A mention by combining structure reduce steel pipe support contact area can reduce vibration.But improve the effect of strength and stiffness comparatively obviously by concreting in hollow sandwich steel pipe merely, but little to the vibration resistance effect improving structure.
In Vibration Control of Offshore Platform research in the past, often seldom consider the reset function of structure, so cause structure can not reset after suffering extreme load, can not come into operation, and cause huge economic loss.Therefore be badly in need of a kind of technical scheme and solve this technological deficiency.
Summary of the invention
The utility model aims to provide the Self-resetting offshore jacket platforms that a kind of rigidity is large, intensity is high, it is convenient to construct, antivibration is effective, durability is high.
In order to achieve the above object, a kind of Self-resetting offshore jacket platforms of the present utility model, be made up of paralell and platform, stage+module is on paralell, described paralell is by platform conduit, platform stull, platform diagonal brace, the external reinforcing pull rod of prestressing force is formed, platform conduit in the vertical direction is arranged, some platform stulls and platform diagonal brace is provided with between platform conduit, the connecting platform place, top of platform conduit is the upper and lower connecting portion of ocean platform, the bottom of platform conduit is fixedly connected on seabed, platform interior is provided with some platform stulls and platform diagonal brace, the many external reinforcing pull rods of prestressing force are provided with outside platform, described platform conduit comprises outer steel pipe, interior steel pipe, bellows, sandwich concrete, the built-in reinforcing pull rod of prestressing force, location peg and stiffening rib, its China and foreign countries' steel pipe, interior steel pipe, bellows is sheathed from outside to inside and coaxial, between outer steel pipe and interior steel pipe, sandwich concrete is equipped with between interior steel pipe and bellows, location peg is arranged on outer steel pipe, it is connected with interior steel pipe is movable, the built-in reinforcing pull rod of prestressing force is arranged on bellows interior, stiffening rib is fixedly connected with the outside of steel pipe outside, the top of platform conduit is fixed with flange, flange upper end connecting platform or continued access platform conduit.
Platform conduit with comprise flange between platform and to be connected or variable diameters connects.
Emphasis of the present utility model there are provided a kind of platform conduit, in conjunction with platform conduit, the built-in reinforcing pull rod of prestressing force of its inner setting and the external reinforcing pull rod of prestressing force of paralell outer setting are with the use of the function better serving Self-resetting, secondly, the inside fill concrete of platform conduit, enhances the shock resistance of steel work.Described three pipes be coaxially that outer steel pipe, interior steel pipe are identical with bellows three tubular axis line, locate peg realize mainly through arranging; Described spacing peg mainly refers to the isometric peg of spaced set on steel pipe and interior steel pipe outside; Described sandwich concrete refers to the sandwich concrete of filling between outer and inner tube and between interior steel pipe and bellows; Described platform conduit needs to require outside steel pipe to weld stiffening rib and flange according to bending resistance, shearing resistance; Because steel pipe is to the effect of contraction of core concrete cuff, core concrete is except bearing longitudinal pressure, also be subject to the lateral restraint of steel pipe, be in the stress state of three dimension stress, thus make core concrete have higher axial compression strength and compression deformation ability.Steel pipe, by interior supporting role of filling out on coagulation, enhances its geometrical stability, changes the instability status of sky steel pipe, and delay steel pipe and prematurely cripling occurs, thus improve the supporting capacity of steel pipe, compared with common platform conduit, there is more superior mechanical property.Theory analysis and engineering practice all show, concrete filled steel tube is compared with structural iron, and keeping self-respect under the close condition identical with supporting capacity, can save steel about 50%, welding job amount can significantly reduce.
Also comprise prestress steel ground tackle, the external reinforcing pull rod of prestressing force and the built-in reinforcing pull rod of prestressing force are fixedly connected on seabed by prestress steel ground tackle.
Platform conduit is 3-8 root.
Location peg is arranged on inside the two ends of outer steel pipe, and location peg is arranged between interior steel pipe and bellows.
The external reinforcing pull rod of prestressing force is single or double joint setting at the tie point of connecting platform.
Described variable diameters connects for the upper surface of interior steel pipe is for exceeding outer steel pipe upper surface.
The upper end that described variable diameters connects for interior steel pipe is steel pipe in variable diameters, and its diameter is less than the diameter of interior steel pipe.
The cross section of outer steel pipe, interior steel pipe, bellows is circular or rectangle, and outer tube material is stainless steel, and interior steel pipe, bellows material are stainless steel, common iron or high-strength steel.Described outer tube material is stainless steel, and interior tube material is common iron, high-strength steel or stainless steel; Outer steel pipe adopts stainless steel effectively can improve durability, the maintenance cost saving of structure.Tool correlative study simultaneously shows: stainless-steel pipe concrete has the stronger restriction ability to core concrete compared to common steel tube concrete in the load-bearing later stage.
Described sandwich concrete material is self-compacting high-strength concrete, self compacting high strength regeneration concrete, and self-compacting concrete has good mobility, uniformity and stability, can effectively ensure concrete filling effect and compactness.
Described platform connected mode-Flange joint is: weld respectively with interior steel pipe, outer steel pipe inside described flange; Need outside described flange to weld with the stiffening rib on outer steel pipe as requested; Described paralell is connected by high-strength bolt with flange between platform; Described bolt is high-strength bolt; Described flange material is high-strength steel or stainless steel.
Described platform connected mode-socket joint connects: described socket joint connects for pipe sponson in paralell inserts pipe in platform; In described platform, to be interior steel pipe reduce close to the paralell part bore that to be connected with platform pipe sponson gradually, but must not reduce the scope and affect concreting, and in paralell, steel pipe exceeds outer steel pipe one segment distance.Described platform is identical with the outer diameter of steel tube of paralell, and the connection between the outer steel pipe of paralell and the outer steel pipe of platform is realized by welding.
Described prestress steel ground tackle comprises single hole anchor device, flat anchor or group's anchor.
Make a method for Self-resetting offshore jacket platforms, comprise the following steps:
The first step, the making of platform conduit: steel pipe in inserting in hollow outer steel pipe, builds outer and inner tube sandwich concrete, outer steel pipe welds stiffening rib, after concrete strength meets the demands, same for flange outer and inner tube, stiffening rib are welded.
Second step: after platform prefabrication completes, by transportation by lighter or transportation by driving to offshore construction scene, after in place, piling bar and platform conduit are squeezed into seabed.
With common ocean platform unlike, the piling bar bottom of Self-resetting offshore jacket platforms is reserved with prestress steel ground tackle, is convenient to the external reinforcing pull rod of built-in and external prestressing force and carries out stretch-draw.
3rd step: the final leveling carrying out paralell, installs bellows after leveling completes, and is in the milk in interior steel pipe.
4th step: after being in the milk, carries out the stretch-draw of the external reinforcing pull rod of prestressing force and the fixing of paralell end cap flange.
The beneficial effects of the utility model are:
(1) compare with at present conventional ocean platform, the maximum feature of this platform is outside at offshore platform structure and inside adds the external reinforcing pull rod of prestressing force.The utility model proposes jacket can carry out according to common conduit frame flow of installation, only be reserved with prestressing force external reinforcing pull rod built-in fitting to be convenient to the external reinforcing pull rod stretch-draw of prestressing force on stake top, increase after the final leveling of jacket and bellows is installed, after grouting, increase the external reinforcing pull rod stretch-draw of prestressing force and jacket end cap flange is fixed, install by normal procedure afterwards.Installation of the present utility model is similar with the erection procedure of common steel jacket, and only many fixing and stretch-draw of the external reinforcing pull rod of prestressing force, can not increase difficulty of construction.But owing to adding the external reinforcing pull rod of prestressing force, the vibration damping of structure, the aspect such as robustness and reset function are all improved a lot.
(2) the platform conduit that this ocean platform adopts adopts tube-in-tube concrete filled steel tube, and its main feature is that jacket cross section is little, rigidity is large, intensity is high.During construction, ocean platform first can be welded into a taper type space frame with steel pipe by land, and then transportation by lighter or transportation by driving are to offshore construction scene, after in place, piling bar are squeezed in conduit seabed grouting, then installation processes at top; Also can make the jacket being only with outer steel pipe, work as pile foundation with interior steel pipe, build sandwich concrete at sea.Adopt tube-in-tube concrete filled steel tube effectively can reduce cross section, reduce the contact area of structure and ice, wave, stream, thus reduction ice power, ocean current resistance, be conducive to vibration damping.Simultaneously simple, the good economy performance of tube-in-tube concrete-filled steel tube construction.
(3) because sandwich concrete provides supporting role to outer steel pipe, the local buckling performance of steel pipe is effectively improved, and reduce because the trivial structural entity caused in local is collapsed, the safety of platform is improved.
(4) because outer tube adopts stainless steel tube, raising structure durability, saving structural maintenance expense aspect are significant.
Accompanying drawing explanation
Some simplex pull rod overall schematic that Fig. 1 (a) is the utility model embodiment 1 platform;
Some duplex pull rod overall schematic that Fig. 1 (b) is the utility model embodiment 2 platform;
Fig. 2 is the platform conduit schematic diagram of the utility model embodiment;
Fig. 3 is the cross-sectional view of Fig. 2 platform conduit;
Fig. 4 is Figure 1A-A schematic cross-section;
Fig. 5 is external, the built-in reinforcing pull rod structural representation of the utility model prestressing force;
Fig. 6 is the conduit C-C schematic cross-section of Fig. 3;
Fig. 7 is the pilot pin pin structure schematic diagram of Fig. 6 platform conduit;
Fig. 8 is the utility model embodiment 1 platform jacket top view;
Fig. 9 is the utility model embodiment 1 platform jacket flange connected mode;
Figure 10 is the utility model embodiment 1 platform adpting flange;
Figure 11 is the utility model embodiment 1 platform and platform jacket Flange joint;
Figure 12 is the utility model embodiment 2 platform conduit;
Figure 13 is the utility model embodiment 2 platform conduit;
Figure 14 is that the utility model embodiment 2 platform is connected with jacket socket joint;
Figure 15 is detailed description of the invention 2D-D schematic cross-section in Figure 14;
Figure 16 is the utility model embodiment 1 and 2 steel ground tackle schematic diagram;
Figure 17 (a) is Fig. 1 (a) B-B schematic cross-section in four limbs situation.
Figure 17 (b) is Fig. 1 (b) B-B schematic cross-section in four limbs situation
1 paralell; 2 platforms; 3 platform conduits; 4 platform stulls; 5 platform diagonal braces; The upper and lower connecting portion of 6 ocean platform; The external reinforcing pull rod of 7 prestressing force; 8 prestress steel ground tackles;
301 outer steel pipes; Steel pipe in 302; 303 bellowss; 304 sandwich concretes; The built-in reinforcing pull rod of 305 prestressing force; 306 location pegs; 307 stiffening ribs; 308 flange; 309 flange plate screw; Steel pipe in 3010 variable diameters; 3011 weld seams.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model will be further described.
As depicted in figs. 1 and 2, a kind of Self-resetting offshore jacket platforms, be made up of paralell 1 and platform 2, platform 2 is arranged on paralell 1, described paralell 1 is by platform conduit 3, platform stull 4, platform diagonal brace 5, the external reinforcing pull rod 7 of prestressing force is formed, platform conduit 3 in the vertical direction is arranged, some platform stulls 4 and platform diagonal brace 5 is provided with between platform conduit 3, top connecting platform 2 place of platform conduit 3 is the upper and lower connecting portion 6 of ocean platform, the bottom of platform conduit 3 is fixedly connected on seabed, platform 2 inside is provided with some platform stulls 4 and platform diagonal brace 5, the many external reinforcing pull rods 7 of prestressing force are provided with outside platform 2, as Fig. 2, Fig. 3, Fig. 4, shown in Fig. 6, described platform conduit 3 comprises outer steel pipe 301, interior steel pipe 302, bellows 303, sandwich concrete 304, the built-in reinforcing pull rod 305 of prestressing force, location peg 306 and stiffening rib 307, outer steel pipe 301, interior steel pipe 302, bellows 303 is sheathed from outside to inside and coaxial, between outer steel pipe 301 and interior steel pipe 302, sandwich concrete 304 is equipped with between interior steel pipe 302 and bellows 303, location peg 306 is arranged on outer steel pipe 301, it is connected with interior steel pipe 302 is movable, it is inner that the built-in reinforcing pull rod 305 of prestressing force is arranged on bellows 303, as shown in Figure 8, stiffening rib 307 is fixedly connected with the outside of steel pipe 301 outside, as shown in Figure 9 and Figure 10, the top of platform conduit 3 is fixed with flange 308, flange 308 upper end connecting platform 2 or as shown in figure 11 continued access platform conduit 3.
Also comprise prestress steel ground tackle 8, the external reinforcing pull rod of prestressing force 7 and the built-in reinforcing pull rod 305 of prestressing force are fixedly connected on seabed by prestress steel ground tackle 8.
Platform conduit 3 is 3 ~ 8.
Location peg 306 is arranged on inside the two ends of outer steel pipe 301, and location peg 306 is arranged between interior steel pipe 302 and bellows 303.
The external reinforcing pull rod of prestressing force 7 is single or double joint setting at the tie point of connecting platform 2.
As shown in figure 12, the upper surface of described interior steel pipe 302, for exceeding outer steel pipe 301 upper surface, adopts welding manner to connect outside outer steel pipe 301, and forms weld seam 3011 after two platform tubes connection.
As shown in Figure 13,14,15, the upper end of described interior steel pipe 302 is steel pipe 3010 in variable diameters, and its diameter is less than the diameter of interior steel pipe 302.
The cross section of outer steel pipe 301, interior steel pipe 302, bellows 303 is circular or rectangle, and outer steel pipe 301 material is stainless steel, and interior steel pipe 302, bellows 303 material are stainless steel, common iron or high-strength steel.
Described prestress steel ground tackle 8 comprises single hole anchor device, flat anchor or group's anchor.As shown in figure 16, single hole anchor device.
Make a method for Self-resetting offshore jacket platforms, comprise the following steps:
The first step, the making of platform conduit: steel pipe 302 in inserting in hollow outer steel pipe 301, builds outer and inner tube sandwich concrete 304, outer steel pipe 301 welds stiffening rib 307, after concrete strength meets the demands, same for flange 308 outer and inner tube, stiffening rib 307 are welded.
Second step: after platform 2 prefabrication completes, by transportation by lighter or transportation by driving to offshore construction scene, after in place, piling bar and platform conduit 3 are squeezed into seabed.
With common ocean platform unlike, the piling bar bottom of Self-resetting offshore jacket platforms is reserved with prestress steel ground tackle 8, is convenient to the external reinforcing pull rod of built-in and external prestressing force and carries out stretch-draw.
3rd step: the final leveling carrying out paralell 1, installs bellows 303 after leveling completes, and is in the milk in interior steel pipe 302.
4th step: after being in the milk, carries out the stretch-draw of the external reinforcing pull rod of prestressing force and the fixing of paralell end cap flange.
Embodiment 1
As illustrated in fig 17 a, the external reinforcing pull rod of prestressing force 7 is single at the tie point of connecting platform 2.
The present embodiment is made up of two parts, and as shown in Figure 1, ocean platform frame 1 and ocean platform 2 are connected to form.Ocean platform frame 1 mainly comprises the external reinforcing pull rod 7 of ocean platform conduit 3, ocean platform stull 4, ocean platform diagonal brace 5 and prestressing force.
Described ocean platform conduit 3, as shown in Fig. 2 ~ 10, it is interior and coaxial with outer steel pipe 301 that interior steel pipe is placed in outer steel pipe.Sandwich concrete 304 is filled in interlayer between interior steel pipe 302 and outer steel pipe 301.The position of outer and inner tube is mainly ensured coaxially by the location peg 306 be welded on outer steel pipe 301.For ensureing that ocean platform can become height and to prevent and reduce natural disasters performance structure system, at the external reinforcing pull rod 305 of platform conduit 3 center Prestressing, prestressing force external reinforcing pull rod 7 is set outside steel pipe.When structure is under load action, can limiting structure displacement, prevent structure from toppling, make structure reset simultaneously.Bellows 303 is managed coaxial with interior steel pipe 302, outer steel pipe 301 3.Sandwich concrete 304 is filled in interlayer between bellows 303 and interior steel pipe 302.The conveniently connection of ocean platform 2 and ocean platform jacket 1, flange can be adopted to connect, and namely on ocean platform conduit 3, weld stiffening rib 307 and flange 308, stiffening rib 307 also welds with flange 308.
Preferably, platform conduit 3 should be made as much as possible to have larger rigidity; Outer tube 301 has good resistance to corrosion, more excellent employing stainless-steel pipe.
Preferably, concrete should be made as much as possible to have good mobility, compactness and homogenieity, self-compacting high-strength concrete should be used or for self compacting high strength regeneration concrete.Sandwich concrete 304 prefabrication is filled in interlayer between interior steel pipe 302, outer steel pipe 301 and outer and inner tube.
The upper and lower connecting portion 6 of described ocean platform, as shown in Fig. 8 ~ 11, flange 308 inward flange welds with interior steel pipe 302, outer steel pipe 301, and flange 308 outward flange welds with stiffening rib.Platform conduit 3 upper part and ocean platform 2 conduit lower part equal welding flange 308, two flange of ocean platform jacket 1 are connected by high-strength bolt.
The making of this implementation method comprises following steps:
Step S1: stainless steel tube-in-tube concrete filled steel tube steel combination Self-resetting offshore jacket platforms makes
Steel pipe 302 in inserting in hollow outer steel pipe 301, builds outer and inner tube sandwich concrete 304.Outer steel pipe 301 welds stiffening rib 307, after concrete strength meets the demands, same for flange 308 outer and inner tube, stiffening rib is welded.
Step S2: after ocean platform prefabrication completes, by transportation by lighter or transportation by driving to offshore construction scene, after in place, piling bar is squeezed into seabed in conduit.
Be reserved with prestressing force external reinforcing pull rod built-in fitting 8 with common ocean platform unlike the stake top of, stainless steel tube-in-tube concrete filled steel tube steel combination Self-resetting offshore jacket platforms to be convenient to the external reinforcing pull rod of prestressing force and to carry out stretch-draw.
Step S3: the final leveling carrying out jacket, installation bellows after leveling completes, and be in the milk.
Step S4: after being in the milk, carries out the stretch-draw of the external reinforcing pull rod of prestressing force and the fixing of jacket end cap flange.
The stretch-draw of the external reinforcing pull rod of prestressing force comprises the stretch-draw of the built-in reinforcing pull rod of prestressing force 305 and the external reinforcing pull rod 7 of prestressing force.Prestressing force external reinforcing pull rod 7 cloth bar mode has two kinds, simplex pull rod cloth bar modes as some in Fig. 1 (a) and Fig. 1 (b) some duplex pull rod cloth bar mode.
Embodiment 2
As illustrated in fig. 17b, the external reinforcing pull rod 7 of prestressing force is double joint at the tie point of connecting platform 2.The present embodiment is all made up of two parts with enforcement 1 is identical, and ocean platform frame 1 and ocean platform 2 are connected to form.Ocean platform frame 1 mainly comprises ocean platform conduit 3, ocean platform stull 4 and ocean platform diagonal brace 5.
Ocean platform conduit 3 described in embodiment 2, as shown in Figure 12 ~ 15, substantially similar with scheme one ocean platform conduit.Difference is, in ocean platform frame 1 conduit variable diameters in steel pipe 3010 outside steel pole 301 start to carry out variable cross-section with ocean platform 2 connection, diameter of steel tube suitably reduces, and inserts to facilitate steel pipe 302 in platform 2.The length that in variable diameters, steel pipe 3010 exceeds outer steel pipe 301 need be determined through calculating.Outer steel pipe in embodiment 2 no longer welds stiffening rib 307 and flange 308.Sandwich concrete 304 all carries out cast in situs.
The upper and lower connecting portion of ocean platform 6 and outer steel pipe 301 described in embodiment 2, as shown in figure 14, adopt welding.
The making of this implementation method comprises following steps:
Step S1: stainless steel tube-in-tube concrete filled steel tube steel combination Self-resetting offshore jacket platforms makes
In ocean platform described in embodiment 2, steel pipe adopts variable-section steel pipe, and interior steel pipe outside steel tube section place starts to carry out variable cross-section process, and exceeds outer cross section certain altitude.
Step S2: after ocean platform prefabrication completes, by transportation by lighter or transportation by driving to offshore construction scene, after in place, piling bar is squeezed into seabed in conduit.
Step S3: the final leveling carrying out jacket, installation bellows after leveling completes, inserts ocean platform 2 in ocean platform jacket, and is in the milk.
Step S4: after being in the milk, carries out the stretch-draw of the external reinforcing pull rod of prestressing force and the construction of ocean platform outer catheter and ocean platform jacket junction weld seam.
Structure carries out cloth bar according to Fig. 1 (a) and (b) mode, and carry out the performance evaluation of structure under geological process and ice loading effect after having assembled, result is as follows:
It tunami effect:
The maximum displacement (m) of each node under table 1 day tunami effect
Peak acceleration (the m/s of each node under table 2 day tunami effect
2)
In table bracket, each numerical value is effectiveness in vibration suppression=(after original structure reaction-Jia pull bar structural response)/original structure reaction;
As can be seen from table 1, table 2, under sky tunami effect, after Shi Hanzhang, the dynamic response of each node progressively reduces the new structural system of explanation and serves good control action to sky tunami, and damping effect is more satisfactory.
Pressure ice effect:
The maximum displacement (m) of each node under the effect of table 3 pressure ice
Peak acceleration (the m/s of each node under the effect of table 4 pressure ice
2)
In table bracket, each numerical value is effectiveness in vibration suppression=(after original structure reaction-Jia pull bar structural response)/original structure reaction;
As can be seen from table 3, table 4, under pressure ice effect, after Shi Hanzhang, the dynamic response of each node progressively reduces, and even acceleration response can reduce by more than 50%.Illustrate that new structural system also can serve good control action to pressure ice, damping effect is more satisfactory.
Claims (9)
1. a Self-resetting offshore jacket platforms, be made up of paralell (1) and platform (2), platform (2) is arranged on paralell (1), described paralell (1) is by platform conduit (3), platform stull (4), platform diagonal brace (5), the external reinforcing pull rod of prestressing force (7) is formed, platform conduit (3) in the vertical direction is arranged, some platform stulls (4) and platform diagonal brace (5) is provided with between platform conduit (3), top connecting platform (2) place of platform conduit (3) is the upper and lower connecting portion of ocean platform (6), the bottom of platform conduit (3) is fixedly connected on seabed, platform (2) inside is provided with some platform stulls (4) and platform diagonal brace (5), the many external reinforcing pull rods of prestressing force (7) are provided with outside platform (2), it is characterized in that: described platform conduit (3) comprises outer steel pipe (301), interior steel pipe (302), bellows (303), sandwich concrete (304), the built-in reinforcing pull rod of prestressing force (305), location peg (306) and stiffening rib (307), outer steel pipe (301), interior steel pipe (302), bellows (303) is sheathed from outside to inside and coaxial, between outer steel pipe (301) and interior steel pipe (302), sandwich concrete (304) is equipped with between interior steel pipe (302) and bellows (303), location peg (306) is arranged on outer steel pipe (301), it is connected with interior steel pipe (302) is movable, it is inner that the built-in reinforcing pull rod of prestressing force (305) is arranged on bellows (303).
2. Self-resetting offshore jacket platforms according to claim 1, is characterized in that: comprise flange between platform conduit (3) with platform (2) and to be connected or variable diameters connects.
3. Self-resetting offshore jacket platforms according to claim 2, it is characterized in that: for flange is connected between platform conduit (3) with platform (2), stiffening rib (307) is fixedly connected with the outside of steel pipe (301) outside, the top of platform conduit (3) is fixed with flange (308), flange (308) upper end connecting platform (2) or continued access platform conduit (3).
4. Self-resetting offshore jacket platforms according to claim 1, it is characterized in that: also comprise prestress steel ground tackle (8), the external reinforcing pull rod of prestressing force (7) and the built-in reinforcing pull rod of prestressing force (305) are fixedly connected on seabed by prestress steel ground tackle (8).
5. Self-resetting offshore jacket platforms according to claim 1, it is characterized in that: location peg (306) is arranged on inside the two ends of outer steel pipe (301), location peg (306) is arranged between interior steel pipe (302) and bellows (303).
6. Self-resetting offshore jacket platforms according to claim 1, is characterized in that: the external reinforcing pull rod of prestressing force (7) is single or double joint setting at the tie point of connecting platform (2).
7. Self-resetting offshore jacket platforms according to claim 2, is characterized in that: described variable diameters connects for the upper surface of interior steel pipe (302) is for exceeding outer steel pipe (301) upper surface.
8. Self-resetting offshore jacket platforms according to claim 2, it is characterized in that: the upper end that described variable diameters connects for interior steel pipe (302) is reduced diameter portion (3010), and its diameter is less than the diameter of interior steel pipe (302).
9. Self-resetting offshore jacket platforms according to claim 1, it is characterized in that: the cross section of outer steel pipe (301), interior steel pipe (302), bellows (303) is circular or rectangle, outer steel pipe (301) material is stainless steel, and interior steel pipe (302), bellows (303) material are stainless steel, common iron or high-strength steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520434117.0U CN204825835U (en) | 2015-06-23 | 2015-06-23 | From jacket platform that restores to throne |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520434117.0U CN204825835U (en) | 2015-06-23 | 2015-06-23 | From jacket platform that restores to throne |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204825835U true CN204825835U (en) | 2015-12-02 |
Family
ID=54683451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520434117.0U Withdrawn - After Issue CN204825835U (en) | 2015-06-23 | 2015-06-23 | From jacket platform that restores to throne |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204825835U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104912047A (en) * | 2015-06-23 | 2015-09-16 | 青岛理工大学 | Self-returning offshore jacket platform and manufacturing method thereof |
| CN106368484A (en) * | 2016-10-31 | 2017-02-01 | 常州工学院 | Low-cost anti-buckling support |
-
2015
- 2015-06-23 CN CN201520434117.0U patent/CN204825835U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104912047A (en) * | 2015-06-23 | 2015-09-16 | 青岛理工大学 | Self-returning offshore jacket platform and manufacturing method thereof |
| CN106368484A (en) * | 2016-10-31 | 2017-02-01 | 常州工学院 | Low-cost anti-buckling support |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20220074160A1 (en) | Pile-cylinder-truss composite offshore wind turbine foundation and construction process thereof | |
| CN204982864U (en) | Insert steel reinforcement cage behind long spiral pore -forming guncreting | |
| CN107190635B (en) | Dumbbell type steel pipe concrete combined bridge pier and connecting structure and method of dumbbell type steel pipe concrete combined bridge pier and bearing platform | |
| CN110185160A (en) | A kind of compound concrete-filled tubular column and steel beam connecting joint and preparation method thereof | |
| CN105507426A (en) | Half-through bracket haunching type compound steel pipe concrete column-steel beam joint | |
| CN203213088U (en) | Light composite structure pipe support type ocean platform | |
| CN102619292A (en) | Buckling restrained brace with steel pipe concrete sleeved on round pipe as inner core | |
| CN103195040A (en) | Light composite structure jacket type offshore platform | |
| CN204825835U (en) | From jacket platform that restores to throne | |
| CN113445670A (en) | Prefabricated and assembled composite steel pipe concrete lattice column and construction method | |
| CN104912047B (en) | Self-resetting offshore jacket platforms and preparation method thereof | |
| CN113718623A (en) | Hollow steel pipe concrete arch bridge structure | |
| CN206941372U (en) | Concrete-filled steel tube with dumbbell sections assembled pier and the attachment structure with cushion cap | |
| CN211922488U (en) | Take full vertical pile wharf structure of horizontal stay restraint | |
| CN210368909U (en) | Assembly type aluminum pipe-confined concrete-steel pipe combined jacket ocean platform | |
| CN104264780B (en) | Post and curved beam horizontal flexibility connection space structural system | |
| CN105804293A (en) | Prefabricated concrete-filled steel tube construction column rammed earth wall | |
| CN114348197B (en) | Assembled FRP concrete guy cable tower type small displacement platform group and construction method thereof | |
| CN111691389A (en) | Novel combined jacket ocean platform | |
| CN114313127B (en) | Assembled FRP concrete combined guy cable tower type damping platform group and construction method thereof | |
| CN114348192B (en) | Assembled FRP concrete guy cable tower type damping platform and construction method thereof | |
| CN114348179B (en) | Floating box mooring ocean platform and construction method thereof | |
| CN114313126B (en) | Assembled FRP concrete combined guy cable tower platform system and construction method thereof | |
| CN219825844U (en) | Steel column with concrete poured inside | |
| CN114348194B (en) | Suspension FRP concrete combined guy cable tower type damping platform and construction method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151202 Effective date of abandoning: 20160907 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |