CN102619206A - Foundation platform structure of bare rock and karst pile in deep water - Google Patents

Foundation platform structure of bare rock and karst pile in deep water Download PDF

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Publication number
CN102619206A
CN102619206A CN2012100995896A CN201210099589A CN102619206A CN 102619206 A CN102619206 A CN 102619206A CN 2012100995896 A CN2012100995896 A CN 2012100995896A CN 201210099589 A CN201210099589 A CN 201210099589A CN 102619206 A CN102619206 A CN 102619206A
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China
Prior art keywords
steel
pile foundation
steel pipe
pile
steel casing
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Pending
Application number
CN2012100995896A
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Chinese (zh)
Inventor
刘世龙
赵鑫
陈清安
胡博
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China Railway 22nd Bureau Group Co Ltd
Third Engineering Co Ltd of China Railway 22nd Bureau Group Co Ltd
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Third Engineering Co Ltd of China Railway 22nd Bureau Group Co Ltd
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Application filed by Third Engineering Co Ltd of China Railway 22nd Bureau Group Co Ltd filed Critical Third Engineering Co Ltd of China Railway 22nd Bureau Group Co Ltd
Priority to CN2012100995896A priority Critical patent/CN102619206A/en
Publication of CN102619206A publication Critical patent/CN102619206A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a foundation platform structure of bare rock and karst pile in deep water, which comprises steel pipe piles and pile foundation steel retaining cylinders directly located on the riverbed bare bedrock, wherein the pile foundation steel retaining cylinders are located between the steel pipe piles, the tops of the steel pipe piles are connected and fixed with I 45 a I-shaped steel vertical and cross beams, the I 45 a I-shaped steel vertical and cross beams are connected with a Bailey beam, the top of the Bailey beam is provided with I 14 I-shaped steel, and an antiskid steel plate is paved at the top of the I 14 I-shaped steel. The foundation platform structure further comprises a steel bushing box wrapping the whole steel pipe piles and the pile foundation steel retaining cylinders, wherein subaqueous concrete is poured into the steel bushing box, and all the steel pipe piles, all pile foundation steel retaining cylinders and the riverbed bare bedrock are consolidated by the concrete to form an integral structure. According to the invention, the steel pipe piles are used as the wooden stool supporting legs for supporting, and the Bailey beam and I-shaped steel vertical and cross beams are used as a construction platform; and in order to solve the connection problem of the steel pipe piles and the riverbed bare rock surface, an artificial rock foundation is constructed, and the arrangement and the installation of the steel bushing box serve as a critical working procedure for concrete bottom sealing.

Description

The basic platform structure of the naked rock of a kind of deep water, karst stake
Technical field
The present invention relates to the bridge construction structure, this structure is specially adapted to cross over railway, the construction of highway bridge deep water foundation of reservoir, river, bay, influence navigation, and construction ground is naked rock, Xie Yan, solution cavity district bad geological section constructing structure at the bottom of the riverbed.
Background technology
According to the geology drilling data, at present, it is adverse geological condition such as naked rock that the bridge location district that has exists at the bottom of lapies, solution cavity, corrosion fissure, the riverbed.Grow like pier place karst erosion, be mainly lapies, the corrosion fissure of vertical growth, it is many under the face of land within the 6m-25m that karst is grown the degree of depth; Generally on top 4 to 6 meters grow lapies, little solution cavity etc., its down 6 to 15 meters a large amount of corrosion fissures are arranged, have lapies, solution cavity, corrosion fissure etc.; Local stake position exists lapies, solution cavity to gang up each other; Rich groundwater in the hole, bigger to the rock mass strength influence, difficulty of construction is bigger.
Summary of the invention
To the defective that exists in the prior art, the present invention provides the basic platform structure of the naked rock of a kind of deep water, karst stake.Connect between the bed scour surface layer when this structure has guaranteed the pile foundation boring construction, guarantee the integrality and the bearing capacity of pile foundation.
For realizing above-mentioned purpose, technical scheme of the present invention is:
The basic platform structure of the naked rock of a kind of deep water, karst stake, this structure comprise steel pipe pile and the pile foundation steel casing that directly drops on the exposed basement rock in riverbed, and described pile foundation steel casing is positioned in the middle of the steel pipe pile; The beam connection is fixing in length and breadth with i iron at the top of said steel pipe pile, and this I i iron beam in length and breadth is connected with Bei Leiliang, and shellfish thunder back portion is provided with i iron, and checkered plates is laid at this i iron top.
Further, also include the steel bushing case of whole steel pipe piles of encirclement and pile foundation pile foundation steel casing, pouring underwater concrete in this steel bushing case, this concrete is consolidated into an overall structure with all steel pipe piles and all exposed basement rock of pile foundation pile foundation steel casing and riverbed.
Further, the part that surfaces of steel pipe pile connects fixing with bridging.
Further, described pile foundation steel casing is made up of the inwall steel casing that an outer wall steel casing and is arranged in this outer wall steel casing.
The usefulness of technique scheme is:
The present invention makes " stool " supporting leg with steel pipe pile and supports, Bei Leiliang and i iron in length and breadth beam as operation platform.In order to solve the connectivity problem of the naked scar of steel pipe pile supporting leg and riverbed, execute work " people's lithogenesis " basis, be provided with and the steel bushing case be installed as concrete back cover critical process." double-walled steel casing " that the present invention adopts used in the naked rock of deep water, karst pile foundation construction technology; Connect between the bed scour surface layer when having guaranteed the pile foundation boring construction; Not spillage, boring smoothly during boring, concrete is not scurried hole, not broken pile in the underwater concrete filling process; Control pile foundation construction quality, the integrality and the bearing capacity of assurance pile foundation.
Description of drawings
Fig. 1 is a stool shape steel platform master TV structure sketch map of the present invention;
Fig. 2 is a stool shape steel platform side TV structure sketch map of the present invention;
Fig. 3 is a stool shape steel platform plan structure sketch map of the present invention;
Fig. 4 is that steel bushing case of the present invention is installed main TV structure sketch map;
Fig. 5 is a steel bushing case installation side TV structure sketch map of the present invention;
Fig. 6 is that steel bushing case of the present invention is installed the plan structure sketch map.
The specific embodiment
Combine accompanying drawing and embodiment that the present invention is described at present.
Like Fig. 1,2, the naked rock of a kind of deep water shown in 3, the basic platform structure of karst stake, this structure comprises the steel pipe pile 2 and pile foundation steel casing 3 that directly drops on the exposed basement rock 1 in riverbed, and described pile foundation steel casing 3 is positioned in the middle of the steel pipe pile 2.Before burying pile foundation steel casing 3 underground, earlier with block stamp dash at place, stake position one than pile foundation steel casing 3 greatly, the hole of about deeply 1m, descend pile foundation steel casing 3 again, with the fixing pile foundation steel casing 3 of the method concrete perfusion of pouring underwater concrete or throwing back-up sand bag.The top of said steel pipe pile 2 with the i iron of I45a in length and breadth beam 4 connect fixingly, this I45a i iron beam 4 in length and breadth is connected with shellfish thunder beam 5, shellfish thunder sheet group is installed in the I45a i iron in length and breadth on the beam 4; And utilize U-bolt to be connected with shellfish thunder beam 5; Bei Leiliang group is several confirms back installation sheet number according to the load checking computations, during installation group with organize between in Bei Leiliang 5 junctions be set horizontal the connection, shellfish thunder beam 5 tops are provided with I14 i iron 6; Spacing is that 60cm lays; Thick 12mm checkered plates 7 is laid at these I14 i iron 6 tops, forms the steel platform of a stool shape, draws anchor all around.Steel pipe pile 2 of the present invention adopts the supporting leg form of ¢ 800mm, vertical 4 rows, and horizontal 2 rows are provided with; Steel pipe pile 2 wall thickness are 12mm; The supporting leg spacing is provided with according to stake footpath and drilling construction platform space, and the supporting leg part that surfaces connects with bridging and fixes, and guarantees the resistance to overturning of supporting leg.
Like Fig. 4,5, shown in 6, because the steel pipe pile supporting leg of steel " stool " directly drops on the intectate naked rock river bed fastness globality poor stability.In order to solve the solidification problem of the exposed bedrock surface in steel pipe pile supporting leg and riverbed; The present invention is provided with the steel bushing case 8 of whole steel pipe piles 2 of an encirclement and pile foundation steel casing 3; Pouring underwater concrete 9 in this steel bushing case 8, this concrete 9 is consolidated into an overall structure with all steel pipe piles 2 and all pile foundation steel casings 3 with the exposed basement rock 1 in riverbed.In perfusion casing 8 before the underwater concrete, pile foundation steel casing 3 also must first in place fixing, and makes pile foundation steel casing 3 also be wrapped in the concrete 9, can effectively solve at the bottom of the pile foundation steel casing in the riverbed basement rock place because of combining the problem of bad generation spillage.
Like Fig. 3, shown in 6, contact well with pile foundation steel casing 3 for guaranteeing naked scar, consider that scar is uneven, before burying the steel casing underground, earlier with impact machine at place, stake position towards one bigger than pile foundation steel casing 3, but be not less than the hole of 25cm, about deeply 1m.Outer wall steel casing 31 is installed earlier; The usefulness method of concrete perfusion is under water poured into the 50cm concrete in outer wall steel casing; From steel casing slit, emerge when making " people's lithogenesis " concrete back cover, so intensity reached at 75% o'clock after the making of pile foundation steel casing than more than the big 25cm of Pile Foundations Design radius, was treated the completion of " people's lithogenesis " bottom concrete; Inwall steel casing 32 is installed in outer wall steel casing 31 internal drillings of " having planted stake " more, forms the crucial difficult problem of " double-walled steel casing " technical solution.
" outer wall steel casing " of the present invention installed before the underwater concrete in the perfusion casing, makes pile foundation steel casing also be wrapped in the concrete, can effectively solve at the bottom of the pile foundation steel casing in the riverbed basement rock place because of combining the problem of bad generation spillage.' inwall steel casing ' installed when the pile foundation drilling construction; Mainly solve technical problems such as karst region solution cavity, fluid bowl, underground river; Play that boring the time prevents spillage, the hole of collapsing, prevent the concrete spillage during concrete spouting in addition, scurry the hole, make pile foundation broken pile or have mass defect.
The installation of " inwall steel casing " it should be noted that; Geological condition records such as strict tracking control of full process record solution cavity, fluid bowl during drilling construction; Make borehole log judge steel casing length is installed; The whole hole of pile foundation judges by designing requirement, embedding rock 2D diameter+solution cavity, guarantees to be not less than 8m below the covered conduit and do not have the steel casing and install, and guarantees its pile foundation bearing capacity of single pile requirement.So the whole hole of pile foundation judges that there are unfavorable geology phenomenons such as solution cavity, covered conduit for preventing in the back in the sharp following 10m, carry out one geological drilling test before the concrete spouting, guarantee the pile foundation quality requirement.

Claims (5)

1. the basic platform structure of the naked rock of deep water, karst stake, it is characterized in that: this structure comprises steel pipe pile and the pile foundation steel casing that directly drops on the exposed basement rock in riverbed, and described pile foundation steel casing is positioned in the middle of the steel pipe pile; The beam connection is fixing in length and breadth with i iron at the top of said steel pipe pile, and this i iron beam in length and breadth is connected with Bei Leiliang, and shellfish thunder back portion is provided with i iron, and checkered plates is laid at this i iron top.
2. the basic platform structure of the naked rock of a kind of deep water as claimed in claim 1, karst stake; It is characterized in that: the steel bushing case that also includes whole steel pipe piles of encirclement and pile foundation pile foundation steel casing; Pouring underwater concrete in this steel bushing case, this concrete is consolidated into an overall structure with all steel pipe piles and all exposed basement rock of pile foundation pile foundation steel casing and riverbed.
3. according to claim 1 or claim 2 the naked rock of a kind of deep water, the basic platform structure of karst stake, it is characterized in that: the part that steel pipe pile surfaces connects fixing with bridging.
4. according to claim 1 or claim 2 the naked rock of a kind of deep water, the basic platform structure of karst stake, it is characterized in that: described pile foundation steel casing is made up of the inwall steel casing that an outer wall steel casing and is arranged in this outer wall steel casing.
5. the basic platform structure of the naked rock of a kind of deep water as claimed in claim 3, karst stake is characterized in that: described pile foundation steel casing is made up of the inwall steel casing that an outer wall steel casing and is arranged in this outer wall steel casing.
CN2012100995896A 2012-04-06 2012-04-06 Foundation platform structure of bare rock and karst pile in deep water Pending CN102619206A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012100995896A CN102619206A (en) 2012-04-06 2012-04-06 Foundation platform structure of bare rock and karst pile in deep water

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Application Number Priority Date Filing Date Title
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CN102619206A true CN102619206A (en) 2012-08-01

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102787534A (en) * 2012-09-02 2012-11-21 中铁二院工程集团有限责任公司 Light frame-subgrade pile-board structure in karst areas
CN102953341A (en) * 2012-12-13 2013-03-06 中铁上海工程局有限公司 Overhead trestle structure built on non-covering steep bare rocks in deep rapids
CN102979069A (en) * 2012-12-13 2013-03-20 中铁上海工程局第二工程有限公司 Bored pile platform construction method on covering-free steep bare rock in deepwater and rapid stream
CN104032743A (en) * 2014-05-21 2014-09-10 中铁大桥局集团第一工程有限公司 Steel casing placing-down and inserting-driving method on deepwater, rapids and inclined rock face conditions
CN104196000A (en) * 2014-08-01 2014-12-10 中国铁建大桥工程局集团有限公司 Rapid construction method for strong-stormy-wave deep sea underwater connection system
CN108049397A (en) * 2017-12-22 2018-05-18 中交第三航务工程局有限公司宁波分公司 The construction method of Karst Geological Landscape drilled pile
CN108824471A (en) * 2018-06-29 2018-11-16 浙江中交通力工程设计有限公司 A kind of deep water drift net multi-column pier foundation and its construction method
CN110847047A (en) * 2019-11-21 2020-02-28 中交第二航务工程局有限公司 Open sea bare rock trestle construction method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101392521A (en) * 2008-10-29 2009-03-25 中交第三航务工程勘察设计院有限公司 Rock-socketed steel dock structure and construction method thereof
CN102312442A (en) * 2011-07-01 2012-01-11 中铁大桥局股份有限公司 Construction method of trestle steel pipe pile foundation
WO2012004556A1 (en) * 2010-07-05 2012-01-12 Marine Current Turbines Limited Surface-breaking re-usable submergeable template for installing one or more submerged columns/piles
CN202492854U (en) * 2012-03-19 2012-10-17 中铁二十二局集团第三工程有限公司 Foundation platform structures of deepwater bare rock and karstic piles

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101392521A (en) * 2008-10-29 2009-03-25 中交第三航务工程勘察设计院有限公司 Rock-socketed steel dock structure and construction method thereof
WO2012004556A1 (en) * 2010-07-05 2012-01-12 Marine Current Turbines Limited Surface-breaking re-usable submergeable template for installing one or more submerged columns/piles
CN102312442A (en) * 2011-07-01 2012-01-11 中铁大桥局股份有限公司 Construction method of trestle steel pipe pile foundation
CN202492854U (en) * 2012-03-19 2012-10-17 中铁二十二局集团第三工程有限公司 Foundation platform structures of deepwater bare rock and karstic piles

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102787534A (en) * 2012-09-02 2012-11-21 中铁二院工程集团有限责任公司 Light frame-subgrade pile-board structure in karst areas
CN102953341A (en) * 2012-12-13 2013-03-06 中铁上海工程局有限公司 Overhead trestle structure built on non-covering steep bare rocks in deep rapids
CN102979069A (en) * 2012-12-13 2013-03-20 中铁上海工程局第二工程有限公司 Bored pile platform construction method on covering-free steep bare rock in deepwater and rapid stream
CN102953341B (en) * 2012-12-13 2015-10-21 中铁上海工程局集团有限公司 A kind of high-order trestle work structure be arranged in deep water torrent intectate steep bare rock
CN104032743A (en) * 2014-05-21 2014-09-10 中铁大桥局集团第一工程有限公司 Steel casing placing-down and inserting-driving method on deepwater, rapids and inclined rock face conditions
CN104196000A (en) * 2014-08-01 2014-12-10 中国铁建大桥工程局集团有限公司 Rapid construction method for strong-stormy-wave deep sea underwater connection system
CN108049397A (en) * 2017-12-22 2018-05-18 中交第三航务工程局有限公司宁波分公司 The construction method of Karst Geological Landscape drilled pile
CN108824471A (en) * 2018-06-29 2018-11-16 浙江中交通力工程设计有限公司 A kind of deep water drift net multi-column pier foundation and its construction method
CN110847047A (en) * 2019-11-21 2020-02-28 中交第二航务工程局有限公司 Open sea bare rock trestle construction method

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