CN111058441A - Construction device and method for placing large-diameter steel casing under deepwater and rapid stream conditions - Google Patents
Construction device and method for placing large-diameter steel casing under deepwater and rapid stream conditions Download PDFInfo
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- CN111058441A CN111058441A CN201911159738.1A CN201911159738A CN111058441A CN 111058441 A CN111058441 A CN 111058441A CN 201911159738 A CN201911159738 A CN 201911159738A CN 111058441 A CN111058441 A CN 111058441A
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- casing
- pile
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/66—Mould-pipes or other moulds
- E02D5/665—Mould-pipes or other moulds for making piles
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D13/00—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers
- E02D13/04—Guide devices; Guide frames
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
- E02D7/26—Placing by using several means simultaneously
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0061—Production methods for working underwater
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0061—Production methods for working underwater
- E02D2250/0076—Drilling
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The invention relates to a construction device for placing a large-diameter steel casing under a deepwater torrent condition, which structurally comprises a guide casing and a fixed frame, wherein the guide casing is a circular steel casing with the diameter larger than that of a bored pile steel casing, is sleeved outside the bored pile steel casing to form annular guide, is fixedly connected with the fixed frame through a connecting member, and is fixed between the bored pile steel casing and the guide casing in a layered manner and is fixedly fixed on an overwater platform by using the fixed frame. The advantages are that: the guide protective cylinder has small volume and convenient installation, replaces the traditional large double-layer guide frame and is safe to hoist; the requirement on the plane size of a hole site reserved on the water platform is smaller, the length of a cantilever of the steel casing is greatly reduced, the plane position of the steel casing of the pile hole pile is fixed layer by layer, and the verticality of the steel casing is ensured; the manufacturing is simple, and the manufacturing time and the material are saved by adopting a circular steel coil mode; can cooperate percussion drill to smash high strength basement rock, supplementary follow-up steel protects a section of thick bamboo, reduces the frequency of installation demolising, has improved work efficiency greatly.
Description
Technical Field
The invention discloses a construction device and a construction method for placing a large-diameter steel casing under a deepwater and rapid stream condition, and belongs to the technical field of bridge construction.
Background
In the construction of a steel pile casing of a bored pile with the diameter of more than 2.5 meters in deep water and under the condition of water flow turbulence, the conventional method is to use a double-layer guide frame to fix the casing. When the underwater main pier of the oolong river super bridge of the newly-built Fuxiao railway is constructed, the riverbed geology is high-strength inclined tuff, the steel pile casing cannot be inserted and beaten in place by using a vibration hammer alone, an impact drilling machine is required to follow up construction, and the drilling machine conflicts with the double-layer guide frame in position, so that the defects of repeated dismantling and installation are caused.
Disclosure of Invention
The invention provides a construction device for placing a large-diameter steel casing under a deepwater torrent condition, aiming at overcoming the defects in the prior art, and the construction device for placing the large-diameter steel casing under the deepwater torrent condition ensures the verticality and the plane position of the casing by using a casing guide facility and can more conveniently finish the casing follow-up operation.
The technical solution of the invention is as follows: a construction device for placing a large-diameter steel pile casing under the condition of deepwater and rapid stream is characterized by structurally comprising a guide pile casing and a fixed frame, wherein the guide pile casing is a steel pile casing with the diameter 1-2cm larger than that of a bored pile steel pile casing, the steel pile casing is sleeved outside the bored pile steel pile casing to form annular guide, the fixed frame is fixedly connected through a connecting member, and the bored pile steel pile casing and the guide pile casing are fixed in a layered mode and are fixedly arranged on an above-water platform through the fixed frame.
The connecting member is a double 22 member.
The fixed frame adopts a duplex 45-type steel guide fixed frame.
The guide protective cylinder is formed by rolling a steel plate with the wall thickness of 16mm, wherein the steel plate is Q235B.
Wedge blocks are arranged between the guide protective cylinder and the fixed frame for positioning. And a special threaded sleeve for finish rolling of the threads is symmetrically welded at intervals of a fixed distance outside the guide protective cylinder by using a stiffening plate.
The construction method comprises the following steps:
(1) pile position center measurement lofting;
(2) installing a fixed framework and welding and fixing the fixed framework on the trestle platform by adopting a stiffening plate;
(3) installing a guide pile casing, and symmetrically welding a special threaded sleeve for finish rolling threads by using a stiffening plate at fixed intervals outside the guide pile casing;
(4) positioning and fixing the guide casing on a fixed frame by using a fixing component;
(5) placing a steel pile casing of the drilled pile, retesting the center in the hole, positioning and fixing the upper opening by using a wedge block, measuring the verticality, and positioning and fixing the whole steel pile casing of the drilled pile by adjusting the extension and retraction of the finish-rolled threads of each layer;
(6) firstly, vibrating and inserting by using a vibrating pile hammer to enable the upper opening and the lower opening of the steel pile casing of the bored pile to be in a fixed stable state;
(7) a percussion drill is arranged according to the center of the pile position, the diameter of a drill bit is slightly smaller than the inner diameter of the steel casing, and small-stroke punching and smashing are started;
(8) when about 1 m of drilling is carried out, inserting and striking the steel pile casing by using a vibrating pile hammer to enable the steel pile casing to follow to the elevation of the bottom of the hole;
(9) this is repeated until the casing is followed to the designed burial depth.
The invention has the beneficial effects that:
1) the steel pile casing of the bored pile is fixed layer by the guide casing, so that the length of a cantilever at the lower part of the steel pile casing is small, the inclination of the steel pile casing caused by water flow turbulence can be effectively controlled, and the verticality and the central deviation of the steel pile casing can be better controlled.
2) The requirement on the plane size of a hole site reserved on the water platform is small, the platform space is not occupied, and the drilling rig follow-up construction method has obvious advantages particularly in the case that the drilling rig follow-up construction is required, is easy to install and disassemble, so that the purpose of construction quality is achieved.
3) The guide protection cylinder adopts a mode of circumferential steel coils, is simple in structure, small in size, convenient to install, convenient to dismantle and low in cost, replaces a traditional large double-layer guide frame, can be matched with a drilling machine to process high-strength bedrock follow-up construction, and greatly improves the working efficiency.
Drawings
FIG. 1 is a schematic plane view of a steel pile casing and a guide pile casing of a bored pile.
Fig. 2 is a schematic elevation view of the installation of a steel casing and a guide casing of a bored pile.
In the figure, 1 is a connecting component, 2 is a wedge block, 3 is a protective cylinder, 4 is a fixed frame, 5 is a guide protective cylinder, 6 is an above-water platform, 7 is a finish-rolled thread, and 8 is a river bed surface.
Detailed Description
The technical scheme of the invention is further explained by combining the attached drawings
As shown in attached figures 1 and 2, the construction device for placing the steel casing of the large-diameter bored pile suitable for deep water and under the condition of water flow turbulence is characterized in that the steel casing with the diameter 1-2cm larger than that of the steel casing of the designed bored pile is adopted, the steel casing is sleeved outside the steel casing of the bored pile to form annular guide, the steel casing of the bored pile and the guide casing are fixed in a layered mode and are firmly fixed on an overwater platform by a worker 45 type steel framework, the verticality is guaranteed to meet the design requirement, the installation is convenient and simple, the follow-up construction of the impact drilling machine and the sink construction of the steel casing can be synchronously carried out, and the follow-up effect of the casing is obviously improved.
During installation, a guide pile casing is placed according to the pile position of measurement lofting, a double [ 22 ] component is fixed on a fixed frame on a platform, then a steel pile casing of a drilling pile is placed, after the plane position is retested without errors, the upper opening of the steel pile casing is clamped and fixed by a wedge block, the bottom opening of the pile casing and the middle position are screwed and fixed by a precision rolling deformed steel bar matched sleeve, high-strength rock at the bottom opening of the steel pile casing is flushed and smashed by an impact drilling machine at the moment, the steel pile casing is inserted by a vibration pile hammer every time about 1 m is drilled, and the operation is repeated until the depth of the steel pile casing into the soil meets the design requirement.
Example 1
A construction device suitable for placing a large-diameter bored pile steel casing under the condition of deepwater and rapid stream comprises the following steps:
(1) pile position center measurement lofting;
(2) installing a duplex 45-type steel guide fixing frame and welding and fixing the duplex 45-type steel guide fixing frame on the trestle platform by adopting a stiffening plate;
(3) installing a guide pile casing, wherein the guide pile casing is formed by rolling a steel plate with the wall thickness of 16mm by adopting Q235B, and welding special threaded sleeves for finish-rolling threads by using stiffening plates symmetrically at intervals outside the guide pile casing;
(4) positioning and fixing the guide protection cylinder on a duplex 45-type steel guide fixing frame by using a double [ 22 ] member;
(5) placing a steel pile casing of the drilled pile, retesting the center in the hole, positioning and fixing the upper opening by using a wedge block in advance, measuring the verticality by using a 2-meter guiding rule, and positioning and fixing the whole steel pile casing of the drilled pile by adjusting the extension and retraction of the finish-rolled threads on each layer;
(6) firstly, vibrating and inserting by using a vibrating pile hammer to enable the upper opening and the lower opening of the steel pile casing of the bored pile to be in a fixed stable state;
(7) a percussion drill is arranged according to the center of the pile position, the diameter of a drill bit is slightly smaller than the inner diameter of the steel casing, and small-stroke punching and smashing are started;
(8) when about 1 m of drilling is carried out, inserting and striking the steel pile casing by using a vibrating pile hammer to enable the steel pile casing to follow to the elevation of the bottom of the hole;
(9) this is repeated until the casing is followed to the designed burial depth.
Claims (8)
1. The construction device is characterized by structurally comprising a guide pile casing and a fixed frame, wherein the guide pile casing is a circular steel pile casing with the diameter larger than that of a bored pile steel pile casing, the circular steel pile casing is sleeved outside the bored pile steel pile casing to form annular guide, the fixed frame is fixedly connected through a connecting member, and the bored pile steel pile casing and the guide pile casing are fixed in a layered mode and are fixedly fixed on an above-water platform through the fixed frame.
2. The construction equipment for placing the large-diameter steel casing under the deep water and torrent conditions as claimed in claim 1, wherein the diameter of the guide casing is 1-2cm larger than that of the steel casing of the bored pile.
3. The construction equipment for placing the large-diameter steel casing in the deep water and torrent condition as claimed in claim 1, wherein the connecting members are double 22 members.
4. The construction equipment for placing the large-diameter steel casing in the deep water and torrent condition as claimed in claim 1, wherein the fixed frame is a duplex 45-type steel guiding fixed frame.
5. The construction device for placing the large-diameter steel casing in the deep water and torrent condition as claimed in claim 1, wherein the guide casing is formed by rolling a steel plate with the wall thickness of 16mm and Q235B.
6. The construction device for placing the large-diameter steel casing under the deep water and torrent conditions as claimed in claim 1, wherein wedge blocks are arranged between the guide casing and the fixed frame for positioning.
7. The construction device for placing the large-diameter steel casing under the deep water and rapid stream conditions as claimed in claim 1, wherein a special threaded sleeve for finish-rolling threads is symmetrically welded by using a stiffening plate at fixed intervals outside the guide casing.
8. The construction method of the construction device for placing the large-diameter steel casing under the deepwater and rapid stream conditions as claimed in claim 1, which is characterized by comprising the following steps of:
(1) pile position center measurement lofting;
(2) installing a fixed framework and welding and fixing the fixed framework on the trestle platform by adopting a stiffening plate;
(3) installing a guide pile casing, and symmetrically welding a special threaded sleeve for finish rolling threads by using a stiffening plate at fixed intervals outside the guide pile casing;
(4) positioning and fixing the guide casing on a fixed frame by using a fixing component;
(5) placing a steel pile casing of the drilled pile, retesting the center in the hole, positioning and fixing the upper opening by using a wedge block, measuring the verticality, and positioning and fixing the whole steel pile casing of the drilled pile by adjusting the extension and retraction of the finish-rolled threads of each layer;
(6) firstly, vibrating and inserting by using a vibrating pile hammer to enable the upper opening and the lower opening of the steel pile casing of the bored pile to be in a fixed stable state;
(7) a percussion drill is arranged according to the center of the pile position, the diameter of a drill bit is slightly smaller than the inner diameter of the steel casing, and small-stroke punching and smashing are started;
(8) when about 1 m of drilling is carried out, inserting and striking the steel pile casing by using a vibrating pile hammer to enable the steel pile casing to follow to the elevation of the bottom of the hole;
(9) this is repeated until the casing is followed to the designed burial depth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911159738.1A CN111058441A (en) | 2019-11-22 | 2019-11-22 | Construction device and method for placing large-diameter steel casing under deepwater and rapid stream conditions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911159738.1A CN111058441A (en) | 2019-11-22 | 2019-11-22 | Construction device and method for placing large-diameter steel casing under deepwater and rapid stream conditions |
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| Publication Number | Publication Date |
|---|---|
| CN111058441A true CN111058441A (en) | 2020-04-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911159738.1A Pending CN111058441A (en) | 2019-11-22 | 2019-11-22 | Construction device and method for placing large-diameter steel casing under deepwater and rapid stream conditions |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113605383A (en) * | 2021-07-26 | 2021-11-05 | 天津深基工程有限公司 | A steel protects a section of thick bamboo is transferred in merogenesis for bored concrete pile construction |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104032743B (en) * | 2014-05-21 | 2016-01-20 | 中铁大桥局集团第一工程有限公司 | Steel pile casting under deep water, torrent and inclined rock base condition transfers inserted to play method |
| CN104947654B (en) * | 2015-07-01 | 2017-01-18 | 山东金城建设有限公司 | Complicated water area inclined rock face large-diameter cast-in-place pile construction method |
| CN105735319B (en) * | 2016-01-28 | 2018-03-06 | 上海建工二建集团有限公司 | A kind of large diameter steel pipe stand column pile fast positioning plumbing device and construction method |
| CN110424380A (en) * | 2019-08-09 | 2019-11-08 | 倡创(上海)咨询管理事务所 | The accurate guide construction method of cast-in-situ bored pile |
-
2019
- 2019-11-22 CN CN201911159738.1A patent/CN111058441A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104032743B (en) * | 2014-05-21 | 2016-01-20 | 中铁大桥局集团第一工程有限公司 | Steel pile casting under deep water, torrent and inclined rock base condition transfers inserted to play method |
| CN104947654B (en) * | 2015-07-01 | 2017-01-18 | 山东金城建设有限公司 | Complicated water area inclined rock face large-diameter cast-in-place pile construction method |
| CN105735319B (en) * | 2016-01-28 | 2018-03-06 | 上海建工二建集团有限公司 | A kind of large diameter steel pipe stand column pile fast positioning plumbing device and construction method |
| CN110424380A (en) * | 2019-08-09 | 2019-11-08 | 倡创(上海)咨询管理事务所 | The accurate guide construction method of cast-in-situ bored pile |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113605383A (en) * | 2021-07-26 | 2021-11-05 | 天津深基工程有限公司 | A steel protects a section of thick bamboo is transferred in merogenesis for bored concrete pile construction |
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Application publication date: 20200424 |
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