CN209227577U - A kind of hardened structure of double rafts on LNG storage tank basis - Google Patents
A kind of hardened structure of double rafts on LNG storage tank basis Download PDFInfo
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- CN209227577U CN209227577U CN201821884953.9U CN201821884953U CN209227577U CN 209227577 U CN209227577 U CN 209227577U CN 201821884953 U CN201821884953 U CN 201821884953U CN 209227577 U CN209227577 U CN 209227577U
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- raft plate
- rafts
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Abstract
The utility model discloses a kind of hardened structures of double rafts on LNG storage tank basis, it is characterised in that: including pile foundation and storage tank；The top of the pile foundation is arranged in the storage tank, sets gradually lower raft plate, short column and upper raft plate from bottom to top in the space between the terrace layer and the storage tank bottom surface of the pile foundation；Rigid connection is formed between the lower raft plate and pile foundation, multiple short columns are spaced apart on the lower raft plate；Seismic isolation cushion support is arranged in the top of each short column, the lower end of the seismic isolation cushion support and the top of the short column are flexibly connected, the upper end of the seismic isolation cushion support and the bottom surface of the upper raft plate are flexibly connected, and the top surface of the upper raft plate and the bottom surface of storage tank are rigidly connected.
Description
Technical field
The utility model relates to a kind of hardened structures of double rafts on LNG storage tank basis, belong to liquefied natural gas (LNG) transmission & distribution technology
Field.
Background technique
In LNG Industry Chain, LNG storage is very important a link.Either Basicloadtype LNG
Device or peak regulation type device, the natural gas after liquefaction will be stored in the storage tank in liquefaction station or satellite station.As generation
Suffer disaster from an earthquake one of country the most serious in boundary, and Wenchuan earthquake, the Yushu earthquake occurred in recent years is brought to China
Huge economic loss and casualties.To ensure inflammable and explosive dangerous goods LNG storage safety, LNG storage tank is in SSE (Safe
Shutdown Earthquake, safe shutdown horizontal earthquake), OBE (Operating-Basis Earthquake, run benchmark
Horizontal earthquake) Seismic Design under operating condition, it appears it is particularly important.
Built LNG storage tank mostly uses Aseismic Design at present, and the directly rigid build-in of stake top is among storage tank list raft plate, to play
It resists seismic force and transmits the effect of upper load.But this base case area high in earthquake intensity, need to by tank body and
The mode that stake configures a large amount of reinforcing bars realizes, there are constructional difficulties, cost is high the disadvantages of.
For this purpose, the LNG storage tank being located on highlight lines band introduces foundation shock absorption design concept, using single raft plate storage tank base
Plinth, i.e. " the basic vibration isolation+hardened structure of mono- raft ", realize the substantially reduction of geological process, but such structure type not can guarantee stake
The clamped of theoretical calculation is held, hinged connection is belonged between isolation cushion and basis, causes horizontal bearing capacity of single pile too low.
Summary of the invention
In view of the above problems, the object of the present invention is to provide a kind of hardened structures of double rafts on LNG storage tank basis, use
The duplicate protection measure of " the basic vibration isolation+hardened structure of bis- rafts " can effectively weaken seismic response and transmit to superstructure, substantially drop
Low bearing capacity of single pile overcomes the LNG storage tank of " the basic vibration isolation+hardened structure of mono- raft " in high seismic force effects Single Pile horizontal bearing capacity
Low problem improves the safety of LNG storage tank structure so that LNG storage tank entirety stress is more reasonable.
To achieve the above object, the utility model uses following technical scheme, and a kind of double rafts on LNG storage tank basis are hardened
Structure, it is characterised in that: including pile foundation and storage tank；The top of the pile foundation is arranged in the storage tank, in the terrace layer of the pile foundation
Lower raft plate, short column and upper raft plate are set gradually in space between the storage tank bottom surface from bottom to top；The lower raft plate and stake
Rigid connection is formed between base, multiple short columns are spaced apart on the lower raft plate；The top of each short column is arranged
The top of seismic isolation cushion support, the lower end of the seismic isolation cushion support and the short column is flexibly connected, the upper end of the seismic isolation cushion support
It is flexibly connected with the bottom surface of the upper raft plate, the top surface of the upper raft plate and the bottom surface of storage tank are rigidly connected.
Preferably, the seismic isolation cushion support using rubber vibration isolation cushion support, bearing with lead core, high-damping shock isolating pedestal or
Friction isolation support.
Preferably, the storage tank includes outer tank, the inner canister being placed in the outer tank, and is covered on the outer tank top
Tank deck；Top beam frame is set in the lower part of the tank deck, the top beam frame is connected with ceiling system, in the inner and outer tank
Between and the ceiling system and tank deck between be respectively provided with cold insulation material.
Preferably, the outer tank is prestressed reinforced concrete, and the reinforcing bar of the outer tank inner wall area is low temperature reinforcing bar, institute
Outer tank wall thickness is stated in 0.5~5m, the inner canister is 9%Ni steel plate, and the inner canister wall thickness is less than 50mm, and the tank deck is mixed for reinforcing bar
Solidifying soil dome.
Preferably, the top beam frame is built using fashioned iron and steel plate, and the ceiling system is using aluminium sheet and stainless
Steel sunpender is built.
Preferably, the upper raft plate, lower plank thickness are 0.5m~15m, and the pile foundation, lower raft plate and upper raft plate are
Armored concrete.
Preferably, the storage tank is the LNG storage tank of single appearance tank, double volume tank or full appearance tank, and tank holds in 10,000 sides to 300,000 sides
Between.
Preferably, the seepage-resistant grade of the armored concrete is not less than P8, and freeze proof grade is not less than F200.
The utility model use above technical scheme, have the advantages that the utility model pile foundation terrace layer and
Space between storage tank bottom surface sets gradually lower raft plate, short column and upper raft plate from bottom to top, and isolation cushion is arranged at the top of each short column
Support, seismic isolation cushion support upper and lower side are flexibly connected at the top of short column and upper raft board bottom face respectively, are formed in LNG storage tank basis
The double protection structures of " the basic vibration isolation+hardened structure of bis- rafts " can effectively weaken seismic response and transmit to superstructure, substantially drop
Low bearing capacity of single pile improves the safety of LNG storage tank structure so that LNG storage tank entirety stress is more reasonable.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the utility model.
Specific embodiment
The utility model is described in detail with reference to the accompanying drawings and examples.
As shown in Figure 1, the utility model provides a kind of hardened structure of double rafts on LNG storage tank basis comprising pile foundation 1, short
Column 2, seismic isolation cushion support 3, lower raft plate 4, upper raft plate 5 and storage tank 6；The top of pile foundation 1 is arranged in storage tank 6, in the terrace layer of pile foundation 1
Lower raft plate 4, short column 2 and upper raft plate 5 are set gradually in space between 6 bottom surface of storage tank from bottom to top；Lower raft plate 4 and pile foundation 1
Between form rigid connection, multiple short columns 2 are spaced apart on lower raft plate 4；Seismic isolation cushion support 3 is arranged in the top of each short column 2,
The lower end of seismic isolation cushion support 3 and the top of short column 2 are flexibly connected, and the bottom surface flexibility of the upper end of seismic isolation cushion support 3 and upper raft plate 5 connects
It connects, the top surface of upper raft plate 5 and the bottom surface of storage tank 6 are rigidly connected, to form the hardened structure of double rafts between pile foundation 1 and storage tank 6.By
This, forms the double protection structures of " the basic vibration isolation+hardened structure of bis- rafts " in LNG storage tank basis, can ring with effectively weakening
It should be transmitted to superstructure, bearing capacity of single pile is greatly reduced, so that LNG storage tank entirety stress is more reasonable, improve LNG storage tank structure
Safety.
Further, rubber vibration isolation cushion support, bearing with lead core, high-damping shock isolating pedestal can be used in seismic isolation cushion support 3
Or friction isolation support.
Further, storage tank 6 includes outer tank 61, the inner canister 62 being placed in outer tank 61 and the tank for being covered on 61 top of outer tank
Top beam frame 7 is arranged in the lower part of tank deck 63 in top 63, and top beam frame 7 is connected with ceiling system 8, inner canister 62 and outer tank 61 it
Between and ceiling system 8 and tank deck 63 between be respectively provided with cold insulation material 9, heat-blocking action is played to storage tank 6.
Further, outer tank 61 is prestressed reinforced concrete, and the reinforcing bar of 61 inner wall area of outer tank is low temperature reinforcing bar, outer tank
For wall thickness in 0.5~5m, inner canister 62 is 9%Ni steel plate, and interior tank wall thickness is less than 50mm.
Further, storage tank 6 can be the LNG storage tank structure of single appearance tank, double volume tank or full appearance tank, and tank holds in 1 Wan Fangzhi
Between 300000 sides.
Further, top beam frame 7 is built using fashioned iron and steel plate, and ceiling system 8 is hung using aluminium sheet and stainless steel
Bar is built.
Further, upper raft plate 5, lower 4 thickness of raft plate are 0.5m~15m, and pile foundation 1, lower raft plate 4 and upper raft plate 5 are
Armored concrete, tank deck 63 are armored concrete dome, apply man-hour requirement cast in situs.
Further, the seepage-resistant grade of armored concrete among the above is not less than P8, and freeze proof grade is not less than F200.
Based on the hardened structure of double rafts on above-mentioned LNG storage tank basis, the utility model additionally provides a kind of LNG storage tank basis
The production method of double hardened structures of raft comprising following steps:
1) it carries out pile foundation 1 to construct, the top of pile foundation 1 is located at earth's surface, detailed process are as follows:
Surface drilling is first carried out, then steel reinforcement cage binding is placed in drilling, finally carries out concreting；
2) carry out the Stake head handling of pile foundation 1 (including broken pile head etc.)；
3) the terrace layer on 1 top of pile foundation carries out the lower construction of raft plate 4, and detailed process includes formwork, reinforcing bar binding, concrete
It pours, because the construction of lower raft plate 4 is mass concrete construction, Crack Control is construction Difficulties, therefore should be using subregion, layering
Pouring construction technology；
4) construction flow process is pressed in 4 concrete curing of raft plate under, and short column 2 is carried out on the lower raft plate 4 conserved and is constructed, existing
Field pours to form short column 2, and to save the duration, the construction of lower raft plate 4 and short column 2 can be parallel；
5) after the completion of short column 2 is constructed, seismic isolation cushion support 3 is installed at the top of short column 2；
6) after seismic isolation cushion support 3 is installed, the construction of raft plate 5 is carried out, detailed process includes formwork, reinforcing bar binding, mixes
Solidifying soil pours, and upper 5 concreting of raft plate also uses subregion, placement layer by layer construction technology；
7) outer tank 61 is carried out to construct；
8) top beam frame 7 is carried out to assemble；
9) it carries out ceiling system 8 to construct, top beam frame 7 is connect with ceiling system 8；
10) top beam frame 7 and 8 liters of ceiling system are pushed up, is placed in 61 top of outer tank；
11) it carries out tank deck 63 to construct, casting concrete forms tank deck 63 above top beam frame 7；
12) inner canister 62 is carried out to construct；
13) cold insulation material 9 is carried out to construct.
The utility model is only illustrated with above-described embodiment, and structure, setting position and its connection of each component are all can
With what is be varied.It is all that individual part is carried out according to the utility model principle on the basis of technical solutions of the utility model
Improvement or equivalents, should not exclude except the protection scope of the utility model.
Claims (8)
1. a kind of hardened structure of double rafts on LNG storage tank basis, it is characterised in that: including pile foundation and storage tank；The storage tank is arranged in institute
The top for stating pile foundation sets gradually lower raft in the space between the terrace layer and the storage tank bottom surface of the pile foundation from bottom to top
Plate, short column and upper raft plate；Rigid connection is formed between the lower raft plate and pile foundation, multiple short columns are spaced apart under described
On raft plate；Seismic isolation cushion support, the top of the lower end of the seismic isolation cushion support and the short column is arranged in the top of each short column
The bottom surface of flexible connection, the upper end of the seismic isolation cushion support and the upper raft plate is flexibly connected, the top surface of the upper raft plate and storage
The bottom surface of tank is rigidly connected.
2. a kind of hardened structure of double rafts on LNG storage tank basis as described in claim 1, it is characterised in that: the seismic isolation cushion support
Using rubber vibration isolation cushion support, bearing with lead core, high-damping shock isolating pedestal or friction isolation support.
3. a kind of hardened structure of double rafts on LNG storage tank basis as described in claim 1, it is characterised in that: the storage tank includes outer
Tank, the inner canister being placed in the outer tank, and it is covered on the tank deck of the outer tank top；In the lower part of the tank deck, top beam is set
Frame, the top beam frame are connected with ceiling system, between the inner and outer tank and the ceiling system and tank deck it
Between be respectively provided with cold insulation material.
4. a kind of hardened structure of double rafts on LNG storage tank basis as claimed in claim 3, it is characterised in that: the outer tank is to answer in advance
The reinforcing bar of power armored concrete, the outer tank inner wall area is low temperature reinforcing bar, and the outer tank wall thickness is in 0.5~5m, the inner canister
For 9%Ni steel plate, the inner canister wall thickness is less than 50mm, and the tank deck is armored concrete dome.
5. a kind of hardened structure of double rafts on LNG storage tank basis as claimed in claim 3, it is characterised in that: the top beam frame is adopted
It is built with fashioned iron and steel plate, the ceiling system is built using aluminium sheet and stainless steel sunpender.
6. such as a kind of hardened structure of double rafts on LNG storage tank basis described in any one of claim 1 to 5, it is characterised in that: on described
Raft plate, lower plank thickness are 0.5m~15m, and the pile foundation, lower raft plate and upper raft plate are armored concrete.
7. a kind of hardened structure of double rafts on LNG storage tank basis as claimed in claim 6, it is characterised in that: the storage tank is Dan Rong
The LNG storage tank of tank, double volume tank or full appearance tank, tank hold in 10,000 sides between 300,000 sides.
8. a kind of hardened structure of double rafts on LNG storage tank basis as claimed in claim 6, it is characterised in that: the armored concrete
Seepage-resistant grade be not less than P8, freeze proof grade be not less than F200.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821884953.9U CN209227577U (en) | 2018-11-15 | 2018-11-15 | A kind of hardened structure of double rafts on LNG storage tank basis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821884953.9U CN209227577U (en) | 2018-11-15 | 2018-11-15 | A kind of hardened structure of double rafts on LNG storage tank basis |
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| CN209227577U true CN209227577U (en) | 2019-08-09 |
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| CN201821884953.9U Active CN209227577U (en) | 2018-11-15 | 2018-11-15 | A kind of hardened structure of double rafts on LNG storage tank basis |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109356188A (en) * | 2018-11-15 | 2019-02-19 | 中海石油气电集团有限责任公司 | A kind of hardened structure of double rafts and preparation method thereof on LNG storage tank basis |
-
2018
- 2018-11-15 CN CN201821884953.9U patent/CN209227577U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109356188A (en) * | 2018-11-15 | 2019-02-19 | 中海石油气电集团有限责任公司 | A kind of hardened structure of double rafts and preparation method thereof on LNG storage tank basis |
| CN109356188B (en) * | 2018-11-15 | 2024-04-30 | 中海石油气电集团有限责任公司 | Double raft structure of LNG storage tank foundation and manufacturing method thereof |
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