CN108824471A - A kind of deep water drift net multi-column pier foundation and its construction method - Google Patents

A kind of deep water drift net multi-column pier foundation and its construction method Download PDF

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Publication number
CN108824471A
CN108824471A CN201810696132.0A CN201810696132A CN108824471A CN 108824471 A CN108824471 A CN 108824471A CN 201810696132 A CN201810696132 A CN 201810696132A CN 108824471 A CN108824471 A CN 108824471A
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CN
China
Prior art keywords
steel
pipe pile
column pier
deep water
pier foundation
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.)
Pending
Application number
CN201810696132.0A
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Chinese (zh)
Inventor
江正潭
吴飞
何昌斌
徐春清
李达
蒋云昕
李纯阳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Zhong Tong Li Engineering Design Co Ltd
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Zhejiang Zhong Tong Li Engineering Design Co Ltd
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Filing date
Publication date
Application filed by Zhejiang Zhong Tong Li Engineering Design Co Ltd filed Critical Zhejiang Zhong Tong Li Engineering Design Co Ltd
Priority to CN201810696132.0A priority Critical patent/CN108824471A/en
Publication of CN108824471A publication Critical patent/CN108824471A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00Foundations as substructures
    • E02D27/10Deep foundations
    • E02D27/12Pile foundations
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D15/00Handling building or like materials for hydraulic engineering or foundations
    • E02D15/02Handling of bulk concrete specially for foundation or hydraulic engineering purposes
    • E02D15/06Placing concrete under water
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22Piles
    • E02D5/24Prefabricated piles
    • E02D5/28Prefabricated piles made of steel or other metals
    • E02D5/285Prefabricated piles made of steel or other metals tubular, e.g. prefabricated from sheet pile elements
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22Piles
    • E02D5/60Piles with protecting cases

Abstract

The invention belongs to field of civil engineering, more particularly to a kind of deep water drift net multi-column pier foundation and its construction method, including at least one multi-column pier foundation unit, multi-column pier foundation unit includes the steel-pipe pile of a pair of opposing, a pair of casing being arranged between steel-pipe pile, the enhancement layer and cushion cap corresponding with steel-pipe pile that are arranged in above steel-pipe pile, steel pipe pile bottom pours the concrete of package steel-pipe pile, and steel-pipe pile top is welded with reinforcing rib arranged in a crossed manner;The enhancement layer bottom is fixed with the first connector, fixes at the top of the first connector bottom and steel-pipe pile, cushion cap is fixed at the top of enhancement layer, and cushion cap side is fixedly connected with casing.The deep water drift net multi-column pier foundation overall structure that the present invention describes is more stable, saves construction material, and construction method is suitable for all kinds of deepwater environments, and construction efficiency is high.

Description

A kind of deep water drift net multi-column pier foundation and its construction method
Technical field
The invention belongs to field of civil engineering, and in particular to a kind of deep water drift net multi-column pier foundation and its construction method.
Background technique
Across river sea long-span bridge engineering in general is located in deepwater environment, and the base form used includes open caisson (case) base Plinth, pipe pile foundation, Bored Pile Foundation, Double-Wall Steel Boxed Cofferdam drilled pile composite foundation, precast-boxed cofferdam etc..Wherein pile foundation is more general Time base form, be because it, which can penetrate soil layer, reaches deeper supporting course;And in deepwater foundation construction, high-rise pile cap Multi-column pier foundation scheme is made than other base forms in reform of nature construction condition, reduction difficulty of construction, shortening construction period, saving Valence etc. has sizable advantage, and can satisfy function of the long-span bridge engineering under normal operating condition and safety and want It asks, this is but also it becomes the base form that across river sea long-span bridge is widely used.The design of existing deep water drift net multi-column pier foundation Less with construction method, speed of application is slower, and involves great expense, and it is universal to be unfavorable for such design.
Summary of the invention
It is an object of the invention to overcome above-mentioned the deficiencies in the prior art, to provide an a kind of deep water drift net clump of piles Basis and its construction method.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of deep water drift net multi-column pier foundation, including at least one multi-column pier foundation unit, it is characterised in that:Multi-column pier foundation unit includes The steel-pipe pile of a pair of opposing, a pair of casing being arranged between steel-pipe pile, the enhancement layer being arranged in above steel-pipe pile and Cushion cap corresponding with steel-pipe pile, steel pipe pile bottom pour the concrete of package steel-pipe pile, and steel-pipe pile top is welded with intersection and sets The reinforcing rib set;The enhancement layer bottom is fixed with the first connector, fixed, cushion cap at the top of the first connector bottom and steel-pipe pile It is fixed at the top of enhancement layer, cushion cap side is fixedly connected with casing.
Further, the second connector being fixedly connected with the two is equipped between the cushion cap and enhancement layer.
Further, the steel-pipe pile is 630 stainless-steel pipe stakes.630 stainless steel fade performances are good, corrosion fatigue resistant and Water droplet performance is strong, can guarantee that steel-pipe pile has longer service life.
Further, the reinforcing rib is 16 channel steel reinforcing ribs.
Further, first connector is 36 I-steel of Two bors d's oeuveres.Use I-steel as connector, ensure that connection The lateral rigidity at place is big, and bending resistance is strong, while I-steel connection, processing, simple installation, at low cost compared with normal section steel, Residual stress is small, can save structure steel fabrication cost.
Further, the enhancement layer is 25 channel steel of Two bors d's oeuveres.The structure of Two bors d's oeuveres channel steel can change putting forth effort for building structure Point realizes the same reinforcing effect while saving material.
Further, second connector is 16 I-steel.Use I-steel as connector, ensure that junction Lateral rigidity is big, and bending resistance is strong, while I-steel connection, processing, simple installation, at low cost compared with normal section steel, residual Residue stress is small, can save structure steel fabrication cost.
The construction method of above-mentioned deep water drift net multi-column pier foundation, specific step is as follows:
A, the geologic structure for understanding job location is surveyed by ground, and socket length is selected according to geological conditions;
B, the geographical environment according to locating for job location uses the fixed interim steel-pipe pile of floating platform;
C, leading truck is arranged by interim steel-pipe pile, sets up pile foundation construction operating platform;
D, the pore-forming of pile foundation is carried out using impact drill;
E, placing steel tubes stake;
F, it is inserted into casing, shake heavy casing;
G, fixed bearing platform is disposed;
H, floating platform, interim steel-pipe pile and leading truck are removed.
Placing steel tubes include being inserted into steel-pipe pile in above method step e, carry out underwater gliders.Underwater grouting is mixed Solidifying soil is a step critical process, because the infusion time of stake holes is long, is easy to happen plugging, push pipe, top surface concrete initial set etc. and asks Topic, therefore concreting efficiency can be improved using large-diameter guide.
Impact drill carries out the exchange of drill bit in punching according to geology in above method step d, and corresponding iron plate sand bed uses Three wings scraper, corresponding clay layer use roller cutter bit.
Compared to the prior art the present invention, has the following advantages that and effect:Designed multi-column pier foundation overall structure is more steady It is fixed, construction material is saved, while construction efficiency is high.
Detailed description of the invention
Fig. 1 is the structure chart of multi-column pier foundation unit in the present invention.
Fig. 2 is the flow diagram of embodiment.
The drawings described herein are used to provide a further understanding of the present application, constitutes part of this application, this Shen Illustrative embodiments and their description please are not constituted an undue limitation on the present application for explaining the application.
Specific embodiment
It is understandable in order to enable the above objects, features and advantages of the present invention to become apparent, with reference to the accompanying drawing to this hair Bright specific embodiment is described in detail.
Embodiment.
As shown in Figure 1, the present embodiment includes at least one multi-column pier foundation unit.Multi-column pier foundation unit, which includes that a pair is opposite, to be set Steel-pipe pile 1, a pair of casing 2, enhancement layer 3 and the cushion cap 4 corresponding with steel-pipe pile 1 being arranged between steel-pipe pile 1 set.Steel pipe Stake 1 is 630 stainless-steel pipe stakes, and 630 stainless steel fade performances are good, and corrosion fatigue resistant and water droplet performance are strong, can guarantee steel Tubular pole 1 has longer service life.1 bottom of steel-pipe pile is inserted into the soil of deep water bottom, and 1 bottom outside of steel-pipe pile has poured mixed Solidifying soil 11, the concrete 11 are fully wrapped around by the insertion of steel-pipe pile 1 soil part.1 top of steel-pipe pile is welded with reinforcing rib 12, reinforces Muscle 12 intermeshes, specifically, set reinforcing rib 12 is 16 channel steel reinforcing ribs 12.
Enhancement layer 3 is located at 1 top of steel-pipe pile, and enhancement layer 3 is 25 channel steel of Two bors d's oeuveres, and the structure of Two bors d's oeuveres channel steel can change building The impetus of structure realizes the same reinforcing effect while saving material.3 bottom of enhancement layer is fixed with the first connector 5, the It is fixed at the top of 5 bottom of a connection piece and steel-pipe pile 1.The first set connector 5 is I-steel, and the I-steel is in the present embodiment 36 I-steel of Two bors d's oeuveres.Use I-steel as connector, ensure that the lateral rigidity of junction is big, bending resistance is strong, while work Word steel connection, processing, simple installation, at low cost compared with normal section steel, residual stress is small, can save structure steel fabrication at This.
In the present embodiment, each steel-pipe pile 1 is correspondingly arranged on a cushion cap 4, which is located at 3 top of enhancement layer, cushion cap 4 The second connector 6 being fixedly connected with the two is equipped between enhancement layer 3, specifically, the second connector 6 is 16 I-steel.This Outside, the side of cushion cap 4 is fixedly connected with casing 2.Traditional integrated cushion cap 4 is compared, 4 structure of cushion cap used in the present embodiment is more It is small, material can be saved, convenient for construction, while connecting with casing 2, ensure that the stability in structure.
The construction method of above-mentioned deep water drift net multi-column pier foundation, as shown in Fig. 2, specific step is as follows:
A, the geologic structure for understanding job location is surveyed by ground, and socket length is selected according to geological conditions;
B, the geographical environment according to locating for job location uses the fixed interim steel-pipe pile 1 of floating platform;
C, leading truck is arranged by interim steel-pipe pile 1, sets up pile foundation construction operating platform;
D, the pore-forming of pile foundation is carried out using impact drill;
E, placing steel tubes stake 1;
F, it is inserted into casing 2, shake heavy casing 2;
G, fixed bearing platform 4 is disposed;
H, floating platform, interim steel-pipe pile 1 and leading truck are removed.
Placing steel tubes include being inserted into steel-pipe pile 1 in above method step e, carry out underwater concrete 11 and are perfused.It is underwater to fill Infusing concrete 11 is a step critical process, because the infusion time of stake holes is long, is easy to happen plugging, push pipe, top surface concrete 11 The problems such as pre-hardening, therefore use large-diameter guide(Φ 350mm conduit)It can be improved concrete 11 and pour efficiency.
Impact drill carries out the exchange of drill bit in punching according to geology in above method step d.Deep water bottom complicated geology, When facing iron plate layer of sand, bit wear is big, and engineering drilling depth is slow, and bedrock surface gradient is big, easy inclined hole;Facing clay Layer easily paste bores, and needs often to propose brill cleaning, influences drilling efficiency.Therefore corresponding iron plate sand bed uses three wings scraper, corresponding glutinous Soil layer uses roller cutter bit.
The deep water drift net multi-column pier foundation stable structure that the present invention is described, can save construction material, be conducive to universal.The depth The construction method of the naked rock multi-column pier foundation of water is suitable for all kinds of deepwater environments, and construction efficiency is high.
Above content is only illustrations made for the present invention described in this specification.Technology belonging to the present invention The technical staff in field can make various modifications or additions to the described embodiments or by a similar method Substitution, content without departing from description of the invention or beyond the scope defined by this claim should belong to this The protection scope of invention.

Claims (10)

1. a kind of deep water drift net multi-column pier foundation, including at least one multi-column pier foundation unit, it is characterised in that:Multi-column pier foundation unit packet Include the steel-pipe pile, a pair of casing being arranged between steel-pipe pile, the enhancement layer being arranged in above steel-pipe pile of a pair of opposing with And cushion cap corresponding with steel-pipe pile, steel pipe pile bottom pour the concrete of package steel-pipe pile, steel-pipe pile top is welded with intersection The reinforcing rib of setting;The enhancement layer bottom is fixed with the first connector, fixes, holds at the top of the first connector bottom and steel-pipe pile Platform is fixed at the top of enhancement layer, and cushion cap side is fixedly connected with casing.
2. the deep water drift net multi-column pier foundation according to claim 1, it is characterised in that:It is set between the cushion cap and enhancement layer There is the second connector being fixedly connected with the two.
3. the deep water drift net multi-column pier foundation according to claim 1, it is characterised in that:The steel-pipe pile is 630 stainless steel steel Tubular pole.
4. the deep water drift net multi-column pier foundation according to claim 1, it is characterised in that:The reinforcing rib is the reinforcement of 16 channel steels Muscle.
5. the deep water drift net multi-column pier foundation according to claim 1, it is characterised in that:First connector is Two bors d's oeuveres 36 I-steel.
6. the deep water drift net multi-column pier foundation according to claim 1, it is characterised in that:The enhancement layer is 25 channel steel of Two bors d's oeuveres.
7. deep water drift net multi-column pier foundation according to claim 2, it is characterised in that:Second connector is 16 I-shapeds Steel.
8. the construction method of -7 any one deep water drift net multi-column pier foundations according to claim 1, which is characterized in that step is such as Under:
A, the geologic structure for understanding job location is surveyed by ground, and socket length is selected according to geological conditions;
B, the geographical environment according to locating for job location uses the fixed interim steel-pipe pile of floating platform;
C, leading truck is arranged by interim steel-pipe pile, sets up pile foundation construction operating platform;
D, the pore-forming of pile foundation is carried out using impact drill;
E, placing steel tubes stake;
F, it is inserted into casing, shake heavy casing;
G, fixed bearing platform is disposed;
H, floating platform, interim steel-pipe pile and leading truck are removed.
9. the construction method of deep water drift net multi-column pier foundation according to claim 8, it is characterised in that:Steel is placed in step e Tubular pole includes steel-pipe pile insertion, carries out underwater gliders.
10. the construction method of deep water drift net multi-column pier foundation according to claim 8, it is characterised in that:Impact drill in step d The exchange of drill bit is carried out according to geology in punching, corresponding iron plate sand bed uses three wings scraper, and corresponding clay layer is bored using hobboing cutter Head.
CN201810696132.0A 2018-06-29 2018-06-29 A kind of deep water drift net multi-column pier foundation and its construction method Pending CN108824471A (en)

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Application Number Priority Date Filing Date Title
CN201810696132.0A CN108824471A (en) 2018-06-29 2018-06-29 A kind of deep water drift net multi-column pier foundation and its construction method

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Application Number Priority Date Filing Date Title
CN201810696132.0A CN108824471A (en) 2018-06-29 2018-06-29 A kind of deep water drift net multi-column pier foundation and its construction method

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Publication Number Publication Date
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110241800A (en) * 2019-06-14 2019-09-17 中交二公局第二工程有限公司 Drilling platform construction method under a kind of disorderly Condition of Supercritical Flow of naked rock of high inclination-angle
CN110241812A (en) * 2019-06-03 2019-09-17 中铁大桥局集团有限公司 A kind of drilling platform steel-pipe pile inserting piling method and leading truck component
CN111101496A (en) * 2019-12-31 2020-05-05 中交三航(上海)新能源工程有限公司 Construction process for installing deepwater jacket based on attached pile stabilizing device

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FR2676764A1 (en) * 1991-05-23 1992-11-27 Balick Claude Method for construction above deep water, and foundation piles used for this purpose
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Publication number Priority date Publication date Assignee Title
FR2676764A1 (en) * 1991-05-23 1992-11-27 Balick Claude Method for construction above deep water, and foundation piles used for this purpose
CN101666081A (en) * 2009-09-23 2010-03-10 中交二公局第六工程有限公司 Abrupt slope bare rock drilling platform and technology in huge reservoir
CN102619206A (en) * 2012-04-06 2012-08-01 中铁二十二局集团第三工程有限公司 Foundation platform structure of bare rock and karst pile in deep water
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
CN105544493A (en) * 2016-01-18 2016-05-04 中国铁建大桥工程局集团有限公司 Construction platform for bare rock area and erecting method of construction platform

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110241812A (en) * 2019-06-03 2019-09-17 中铁大桥局集团有限公司 A kind of drilling platform steel-pipe pile inserting piling method and leading truck component
CN110241800A (en) * 2019-06-14 2019-09-17 中交二公局第二工程有限公司 Drilling platform construction method under a kind of disorderly Condition of Supercritical Flow of naked rock of high inclination-angle
CN111101496A (en) * 2019-12-31 2020-05-05 中交三航(上海)新能源工程有限公司 Construction process for installing deepwater jacket based on attached pile stabilizing device

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Application publication date: 20181116