CN103711115A - Foundation reinforcement and connector combination of integral floating water taking head and construction method - Google Patents
Foundation reinforcement and connector combination of integral floating water taking head and construction method Download PDFInfo
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- CN103711115A CN103711115A CN201310622646.9A CN201310622646A CN103711115A CN 103711115 A CN103711115 A CN 103711115A CN 201310622646 A CN201310622646 A CN 201310622646A CN 103711115 A CN103711115 A CN 103711115A
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Abstract
The invention discloses a foundation reinforcement and connector combination of an integral floating water taking head and a construction method. The foundation reinforcement and connector combination comprises a water taking head foundation. The water taking head foundation is reinforced by the aid of rock-socketed cast-in-place piles and is excavated, and rubble is filled back into the water taking head foundation; pile sleeves are arranged at the bottom of the water taking head, underwater concrete is filled into gaps of the pile sleeves of the rock-socketed cast-in-place piles via reserved grout pipes, and the rock-socketed cast-in-place piles are nested in the water taking head. The construction method includes a, reasonably arranging the rock-socketed cast-in-place piles according to actual conditions of the water taking head and computation results and reinforcing the foundation; b, excavating a foundation region of the water taking head and filling the rubble into the foundation region; c, arranging the pile sleeves for sleeving the rock-socketed cast-in-place piles at the bottom of the water taking head and reserving the grout pipes when the water taking head is manufactured; d, temporarily plugging the reserved grout pipes of the water taking head; e, filling the underwater concrete from the tops of the reserved grout pipes into the nesting gaps of the rock-socketed cast-in-place piles nested in the water taking head.
Description
Technical field
What the present invention relates to is a kind of ground stabilization and joint and construction method at the whole transportation by driving formula of complex environment coastal power plant water-fetching head, belongs to power generation plant technology field.
Background technology
Deposits in Eastern Coastal China economic development is at present rapid, and power demand is large, the requirement improving in order to meet this area economic development and people's living standard, and country often needs every year to drop into huge fund and is used for building large-size thermal power plant.Large-size thermal power plant addressing should take into full account convenience and the economy of Coal Transport, taking and discharging, also should consider to save the factors such as soil and environmental protection simultaneously.Therefore numerous large-size thermal power plants are generally arranged in seashore.Seashore power plant generally adopts once-though cooling mode, by the forms such as water-fetching head are set, from deep trouth, fetches water.As better in water-fetching head foundation condition, take the direct transportation by driving of whole transportation by driving formula water intake to put in place and sinking is at present conventional a kind of mode.If water-fetching head foundation condition is complicated, and subaqueous work environment is severe, adopt routinely steel drum cofferdam to construct, but the method engineering quantity is large, long in time limit, and there is certain risk.
Take certain power plant in Zhejiang water-fetching head as example, waters of living in is marine outfall, Qiantang River briny environment, complex geologic conditions (the weak mud in top, rock stratum, the bottom end face gradient is precipitous), it is very large that construction is subject to Qiantang River tidal bore function influence, needs the factor of consideration very complicated.Design suitable intake strucure form and form of construction work, be no matter to engineering, to meet that design water intaking requires, structure durability requirement and safety of structure requirement, or construct enforcement smoothly, construction quality and can construction speed be guaranteed, can construction costs controlledly be all very important.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, and provide a kind of safe and reliable, facilitate feasible, can complete the installation of whole transportation by driving formula water intake, meet engineering safety and schedule requirement, reduce ground stabilization and joint and the construction method of the whole transportation by driving formula of the coastal power plant water-fetching head of construction costs.
The object of the invention is to complete by following technical solution: ground stabilization and the joint of the whole transportation by driving formula of coastal power plant water-fetching head, it comprises: one adopts piles set into rock to carry out the water-fetching head ground of consolidation process, described water-fetching head foundation dredging backfill have piece stone leveling, and the piles set into rock arranging on the ground of described water-fetching head, the suitable height of backfill piece stone is risen out in its stake.
The bottom of described water-fetching head is provided with for being nested with the pile protection of piles set into rock, and it is consistent that the height of described pile protection and described rock-socketed bored concrete pile are risen out backfill piece stone height; Described water-fetching head also pours into by reserved grout pipe the space that underwater concrete is nested with the pile protection of piles set into rock by water-fetching head and fills from top, thereby water-fetching head and piles set into rock are consolidated.
The ground stabilization of the whole transportation by driving formula of coastal power plant water-fetching head and a construction method for joint as mentioned above, the method comprises the steps:
A: according to water-fetching head actual conditions and result of calculation, rational piles set into rock is set and carries out ground stabilization;
B: the foundation region of water-fetching head excavates and backfill piece stone, and the rock-socketed bored concrete pile on water-fetching head ground is risen out the suitable height of backfill piece stone;
C: when water-fetching head is made, bottom is provided for being nested with the pile protection of piles set into rock, it is consistent that the height of its pile protection and described rock-socketed bored concrete pile are risen out backfill piece stone height; Reserved grout pipe when water-fetching head is made;
D: the reserved grout pipe of water-fetching head carries out temporary plugging, water-fetching head transportation by driving is put in place and sinking after, water-fetching head is enclosed within on piles set into rock;
E: fill in the reserved grout pipe arranging by the water-fetching head space that water-fetching head is nested with to the pile protection of piles set into rock of being in the milk from top, thereby water-fetching head and piles set into rock are consolidated.
Compared with prior art, advantage of the present invention is: from overall plan, adopt whole transportation by driving formula water intake to reduce construction costs, shortened the duration.Under whole transportation by driving formula water intake scheme, take the present invention, solved the difficult problem that the ground stabilization of complex environment water-fetching head and joint are processed.According to of the present invention, water-fetching head sinking does not need too high precision, has reduced difficulty of construction, has guaranteed can complete smoothly the sinking of water-fetching head under adverse circumstances.Underwater grouting had both guaranteed reliable be connected of water-fetching head with stake, made again easy construction feasible.
Whole transportation by driving formula water-fetching head of the present invention has the features such as cost is low, the construction period is short, and risk is controlled.
Accompanying drawing explanation
Fig. 1 is structural plan of the present invention schematic diagram.
Fig. 2 is structural profile schematic diagram of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is done to detailed introduction: shown in Fig. 1,2, ground stabilization and the joint of the whole transportation by driving formula of coastal power plant of the present invention water-fetching head, it comprises: one adopts piles set into rock to carry out the water-fetching head ground 1 of consolidation process, described water-fetching head ground 1 excavation backfill have piece stone 2, and the piles set into rock 3 arranging on the ground 1 of described water-fetching head.
Described water-fetching head 4 is provided with for being placed on the pile protection 5 on piles set into rock 3, described water-fetching head 4 also pours into by reserved grout pipe 6 space that underwater concrete is nested with the pile protection 5 of piles set into rock by water-fetching head and fills, thereby water-fetching head 4 and piles set into rock 3 are consolidated.
The ground stabilization of the whole transportation by driving formula of coastal power plant water-fetching head and a construction method for joint as mentioned above, the method comprises the steps:
A: according to water-fetching head actual conditions and result of calculation, rational piles set into rock is set and carries out ground stabilization;
B: the foundation region of water-fetching head excavates and backfill piece stone, and the rock-socketed bored concrete pile on water-fetching head ground is risen out the suitable height of backfill piece stone;
C: when water-fetching head is made, bottom is provided for being nested with the pile protection of piles set into rock, it is consistent that the height of its pile protection and described rock-socketed bored concrete pile are risen out backfill piece stone height; Reserved grout pipe when water-fetching head is made;
D: the reserved grout pipe of water-fetching head carries out temporary plugging, water-fetching head transportation by driving is put in place and sinking after, water-fetching head is enclosed within on piles set into rock;
E: fill in the reserved grout pipe arranging by the water-fetching head space that water-fetching head is nested with to the hole of piles set into rock of being in the milk from top, thereby water-fetching head and piles set into rock are consolidated.
Embodiment:
Certain power plant in Zhejiang engineering is usingd Seawater of Hangzhou Bay as circulating cooling water source.Hangzhou Wan is strong tidal sea world-famous gulf.At the incoming tide, tidal wave imports into from off-lying sea, has two bursts of trends to the east of the mouth of Kingsoft, and rise and rise with northeast in the southeast, to the north of five dishes, crosses, and Ganpu directly becomes along Hangzhou Wan north side.During ebb tide, marine site, the Hangzhou Wan southeast first falls, and impels Hangzhou Wan fluctuation tide main shaft for consistent.General flood strength is large, and half tide mean flow rate is 1.16m/s, and actual measurement Peak Flow Rate reaches 2.45m/s.The point bar in six li of gulfs has respectively suitable, a counterclockwise backflow to occur in flood tide intermediary and later stages and ebb tide later stage.Top, stratum, water-fetching head position is mud, and bottom is rock stratum, and the rock stratum face gradient is precipitous, and the gradient is greater than 60 °.It is very large that water-fetching head construction is subject to Qiantang River tidal bore function influence, and foundation condition is complicated.For guaranteeing that water-fetching head ground stabilization and joint are processed to construct, complete smoothly, take the specific embodiment as follows:
The first step: according to water-fetching head actual conditions and result of calculation, rational piles set into rock is set and carries out ground stabilization;
Second step: water-fetching head foundation region excavates and backfill piece stone washes away problem to solve, and water-fetching head rock-socketed bored concrete pile is risen out the suitable height of backfill piece stone;
The 3rd step: when water-fetching head is made, bottom is provided for being nested with the pile protection of piles set into rock, it is consistent that the height of its pile protection and described rock-socketed bored concrete pile are risen out backfill piece stone height; Reserved grout pipe when water-fetching head is made;
The 4th step: the reserved grout pipe of water-fetching head carries out temporary plugging, water-fetching head transportation by driving is put in place and sinking after, water-fetching head is enclosed within on piles set into rock;
The 5th step: fill in the reserved grout pipe arranging by the water-fetching head space that water-fetching head is nested with to the pile protection of piles set into rock of being in the milk from top, thereby water-fetching head and piles set into rock are consolidated.
According to this programme, under adverse circumstances, can complete smoothly sinking and the installation of water-fetching head, meet engineering safety and schedule requirement, reduce construction costs.
Claims (3)
1. ground stabilization and the joint of a whole transportation by driving formula water-fetching head, it comprises: one adopts piles set into rock to carry out the water-fetching head ground of consolidation process, it is characterized in that described water-fetching head foundation dredging backfill have piece stone, and the piles set into rock arranging on the ground of described water-fetching head, the suitable height of backfill piece stone is risen out in its stake.
2. ground stabilization and the joint of whole transportation by driving formula water-fetching head according to claim 1, the bottom that it is characterized in that described water-fetching head is provided with for being nested with the encapsulation of piles set into rock, described water-fetching head also pours into by reserved grout pipe the space that underwater concrete is nested with the encapsulation of piles set into rock by water-fetching head and fills, thereby water-fetching head and piles set into rock are consolidated.
3. the ground stabilization of whole transportation by driving formula water-fetching head and a construction method for joint as claimed in claim 1 or 2, the method comprises the steps:
A: according to water-fetching head actual conditions and result of calculation, rational piles set into rock is set and carries out ground stabilization;
B: the foundation region of water-fetching head excavates and backfill piece stone, and the rock-socketed bored concrete pile on water-fetching head ground is risen out the suitable height of backfill piece stone;
C: when water-fetching head is made, bottom is provided for being nested with the encapsulation of piles set into rock, it is consistent that the height of its encapsulation and described rock-socketed bored concrete pile are risen out backfill piece stone height; Reserved grout pipe when water-fetching head is made;
D: the reserved grout pipe of water-fetching head carries out temporary plugging, water-fetching head transportation by driving is put in place and sinking after, water-fetching head is enclosed within on piles set into rock;
E: fill in the reserved grout pipe arranging by the water-fetching head space that water-fetching head is nested with to the encapsulation of piles set into rock of being in the milk from top, thereby water-fetching head and piles set into rock are consolidated.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310622646.9A CN103711115B (en) | 2013-11-30 | 2013-11-30 | A kind of ground stabilization of overall transportation by driving formula water-fetching head and joint and construction method |
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| CN201310622646.9A CN103711115B (en) | 2013-11-30 | 2013-11-30 | A kind of ground stabilization of overall transportation by driving formula water-fetching head and joint and construction method |
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| CN103711115A true CN103711115A (en) | 2014-04-09 |
| CN103711115B CN103711115B (en) | 2016-01-20 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104074234A (en) * | 2014-07-16 | 2014-10-01 | 中国能源建设集团广东省电力设计研究院 | Inland water collecting opening structure of power plant circulating water system and construction method thereof |
| CN110258725A (en) * | 2019-05-13 | 2019-09-20 | 中国华冶科工集团有限公司 | Water works water tank fabrication and installation method |
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| CN102086634A (en) * | 2011-01-07 | 2011-06-08 | 广东省电力设计研究院 | Marine underwater assembled water intake and construction method thereof |
| JP2011220108A (en) * | 2011-07-06 | 2011-11-04 | Railway Technical Research Institute | Embankment construction method on soft ground and embankment structure thereof |
| GB2497274A (en) * | 2011-11-24 | 2013-06-12 | Aspin Foundations Ltd | Vehicle station platform system |
| CN203213136U (en) * | 2013-01-24 | 2013-09-25 | 中交公路规划设计院有限公司 | Caisson and pile combined foundation of consolidated subsoil |
| CN203684205U (en) * | 2013-11-30 | 2014-07-02 | 浙江省电力设计院 | Foundation reinforcement and joint for integral floating intake head |
-
2013
- 2013-11-30 CN CN201310622646.9A patent/CN103711115B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102086634A (en) * | 2011-01-07 | 2011-06-08 | 广东省电力设计研究院 | Marine underwater assembled water intake and construction method thereof |
| JP2011220108A (en) * | 2011-07-06 | 2011-11-04 | Railway Technical Research Institute | Embankment construction method on soft ground and embankment structure thereof |
| GB2497274A (en) * | 2011-11-24 | 2013-06-12 | Aspin Foundations Ltd | Vehicle station platform system |
| CN203213136U (en) * | 2013-01-24 | 2013-09-25 | 中交公路规划设计院有限公司 | Caisson and pile combined foundation of consolidated subsoil |
| CN203684205U (en) * | 2013-11-30 | 2014-07-02 | 浙江省电力设计院 | Foundation reinforcement and joint for integral floating intake head |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104074234A (en) * | 2014-07-16 | 2014-10-01 | 中国能源建设集团广东省电力设计研究院 | Inland water collecting opening structure of power plant circulating water system and construction method thereof |
| CN104074234B (en) * | 2014-07-16 | 2016-02-03 | 中国能源建设集团广东省电力设计研究院有限公司 | The interior river intake structure of electric power plant circulating water system and construction method thereof |
| CN110258725A (en) * | 2019-05-13 | 2019-09-20 | 中国华冶科工集团有限公司 | Water works water tank fabrication and installation method |
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| CN103711115B (en) | 2016-01-20 |
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Address after: No. 68 GUCUI Road, Hangzhou, Zhejiang Province Patentee after: Energy source in China construction group Zhejiang Province Power Design Institute Co., Ltd Address before: No. 68 GUCUI Road, Hangzhou, Zhejiang Province Patentee before: Zhejiang Electric Power Design Institute |