CN113846567A - Method for quickly constructing underwater pile-column type foundation of bridge - Google Patents

Method for quickly constructing underwater pile-column type foundation of bridge Download PDF

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Publication number
CN113846567A
CN113846567A CN202111200709.2A CN202111200709A CN113846567A CN 113846567 A CN113846567 A CN 113846567A CN 202111200709 A CN202111200709 A CN 202111200709A CN 113846567 A CN113846567 A CN 113846567A
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cofferdam
hanging box
drilling platform
pile
steel pipe
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CN113846567B (en
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曹振杰
黄昌富
张京斌
林伟群
郝伟亮
王事成
苗相生
孙丹丹
邢如祥
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China Railway 15th Bureau Group Co Ltd
Second Engineering Co Ltd of China Railway 15th Bureau Group Co Ltd
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China Railway 15th Bureau Group Co Ltd
Second Engineering Co Ltd of China Railway 15th Bureau Group Co Ltd
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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00Methods or apparatus specially adapted for erecting or assembling bridges
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D19/00Keeping dry foundation sites or other areas in the ground
    • E02D19/02Restraining of open water
    • E02D19/04Restraining of open water by coffer-dams, e.g. made of sheet piles
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B15/00Supports for the drilling machine, e.g. derricks or masts
    • E21B15/02Supports for the drilling machine, e.g. derricks or masts specially adapted for underwater drilling

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  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Structural Engineering (AREA)
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  • General Engineering & Computer Science (AREA)
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  • Bridges Or Land Bridges (AREA)

Abstract

本发明公开了一种桥梁水中桩柱式基础快速施工方法,该方法使用的吊箱围堰的纵梁由钻孔平台的走道梁组成,吊箱围堰的底板由钻孔平台的面板构成,实现了材料的复用;钢吊箱围堰整体预制,底模分模块栓接,便于施工和施工后拆卸;可实现吊箱围堰侧板和部分底板的回收,在同一项目中可重复使用,节约了成本。另外,传统围堰施工占地面积大,影响水域的通航,对水流的流动造成阻力;新型桥梁水中桩柱式基础快速施工方法占地面积小,施工方便,最大限度地减小了对通航的影响,同时降低了成本。本发明的优点是:解决了传统围堰方法需要拆除钻孔平台,施工工期长,施工成本高,且围堰结构难以回收利用等问题。

Figure 202111200709

The invention discloses a rapid construction method of a bridge underwater pile type foundation. The longitudinal beam of the hanging box cofferdam used in the method is composed of the walkway beam of the drilling platform, and the bottom plate of the hanging box cofferdam is composed of the panel of the drilling platform. The reuse of materials is realized; the steel hanging box cofferdam is prefabricated as a whole, and the bottom mold is bolted into modules, which is convenient for construction and post-construction dismantling; it can realize the recovery of the side plate and part of the bottom plate of the hanging box cofferdam, and can be reused in the same project , saving costs. In addition, the traditional cofferdam construction covers a large area, which affects the navigation of the water area and causes resistance to the flow of water; the new rapid construction method of the pile-type foundation in the water for bridges occupies a small area, is convenient for construction, and minimizes the impact on navigation. impact while reducing costs. The invention has the advantages that the traditional cofferdam method needs to remove the drilling platform, the construction period is long, the construction cost is high, and the cofferdam structure is difficult to recycle.

Figure 202111200709

Description

Method for quickly constructing underwater pile-column type foundation of bridge
Technical Field
The invention belongs to the technical field of building construction, and particularly relates to a method for quickly constructing an underwater pile type foundation of a bridge.
Background
In the construction of conventional small and medium span bridges, because of clear stress, pile pier is generally adopted as a lower structure of the bridge, and in the design of the bridge pile pier, in order to improve the stability of a pile body (a column body), a tie beam is arranged between piles (between columns). When the bridge pile foundation is constructed, a drilling platform is required to carry out auxiliary construction. In the construction of tie beams, particularly in water, larsen steel sheet pile cofferdams or steel suspension box cofferdams are generally adopted. For the underwater pile-column type foundation, a drilling platform is generally adopted for constructing a drilling cast-in-place pile, then the drilling platform is dismantled after cofferdam, and a tie beam and a pier column between piles (between columns) are constructed, so that the construction period is long, the construction cost is high, and the cofferdam structure is difficult to recycle. Therefore, a method for rapidly constructing the pile-column type foundation in the water of the bridge by using the drilling platform is urgently needed.
Disclosure of Invention
The invention aims to provide a method for quickly constructing a pile-column foundation in the water of a bridge according to the defects of the prior art, the longitudinal beam of the hanging box cofferdam used in the method consists of a walkway beam of a drilling platform, and the bottom plate of the hanging box cofferdam consists of a panel of the drilling platform, so that the material reuse is realized; the steel suspension box cofferdam is prefabricated integrally, and the bottom die is bolted in sub-modules, so that the construction and the disassembly after the construction are convenient; the side plates and part of the bottom plate of the cofferdam of the hanging box can be recycled, the side plates and the part of the bottom plate can be repeatedly used in the same project, and the cost is saved.
The purpose of the invention is realized by the following technical scheme:
a method for quickly constructing a pile-column type foundation in bridge water is characterized by comprising the following steps:
(1) the method comprises the following steps that a reserved hole is formed in the upper end portion of a steel pipe pile, a bracket is welded on the outer wall surface, corresponding to the reserved hole, of the steel pipe pile, a socket distribution beam is inserted into the reserved hole of each two adjacent steel pipe piles, the socket distribution beam and the bracket are screwed and fixed through bolts, a drilling platform longitudinal beam is arranged above the socket distribution beam, a drilling platform panel is arranged on the drilling platform longitudinal beam, and the drilling platform panel, the drilling platform longitudinal beam and the socket distribution beam jointly form a drilling platform;
(2) arranging a drilling machine above the drilling platform, and constructing a cast-in-situ bored pile downwards through a preset circular hole on a panel of the drilling platform by using the drilling machine;
(3) the drilling platform longitudinal beam is used as a hanging box cofferdam longitudinal beam in an inverted mode, the drilling platform panel is used as a hanging box cofferdam bottom plate in an inverted mode, and a hanging box cofferdam side plate, a hanging box cofferdam ring beam and a hanging box cofferdam supporting beam are assembled on the drilling platform on the inverted hanging box cofferdam bottom plate to form a hanging box cofferdam; meanwhile, installing an extension steel pipe column on the original steel pipe pile, and welding a pile top beam on the top of the extension steel pipe column;
(4) installing a lowering system on the pile top beam, lifting the hanging box cofferdam, unfastening the bolts between the socket distribution beams and the brackets, and drawing out the socket distribution beams from the holes of the steel pipe piles to leave a space for lowering the hanging box cofferdam;
(5) lowering the suspension box cofferdam to a proper position by using the lowering system, restoring the socket distribution beam from the hole of the steel pipe pile, fixing the socket distribution beam on the steel pipe pile by using the bolt again, and fixing the suspension box cofferdam on the socket distribution beam by using the hanging strip;
(6) and (4) installing a steel cofferdam water stop device, pumping water in the hanging box cofferdam, then erecting a mould, and pouring a tie beam.
After the tie beam construction is finished, firstly, the connection between the hanging box cofferdam side plate and the hanging box cofferdam longitudinal beam is unfastened, the hanging box cofferdam side plate is hung away by the lowering system, a diver turns off the deformed steel bar for tongue-and-groove connection of the hanging box cofferdam bottom plate under water to realize the blocking of the hanging box cofferdam bottom plate, and the lowering system is used for hanging away the drilling platform panel to realize the recycling of the hanging box cofferdam material.
The drilling platform panel comprises a panel with holes and a panel without holes, the panel with holes and the panel without holes are connected through tongues and grooves, and the tongues and the grooves are aligned and fixed through finish-rolled deformed steel bars in a counter-pulling mode.
And (4) hoisting the hanging box cofferdam by using a steel strand or finish rolling deformed steel bar.
And (5) fixing the socket distribution beam on the steel pipe pile by using bolts again, specifically: inserting the socket distribution beam into the reserved hole in the steel pipe pile, and then screwing and fixing the socket distribution beam and the bracket by bolts.
The invention has the advantages that:
(1) the traditional cofferdam construction occupies a large area, influences the navigation of a water area and causes resistance to the flow of water flow; the novel rapid construction method for the pile foundation in the bridge water has the advantages of small occupied area, convenience in construction, reduction of influence on navigation to the maximum extent and reduction of cost.
(2) The longitudinal beam of the hanging box cofferdam is composed of the walkway beams of the drilling platform, and the bottom plate of the hanging box cofferdam is composed of the panel of the drilling platform, so that the material reuse is realized.
(3) The steel suspension box cofferdam is integrally prefabricated, the bottom die is bolted in sub-modules, and the cofferdam is convenient to disassemble after construction. The side plates and part of the bottom plate of the cofferdam of the hanging box can be recycled, the side plates and the part of the bottom plate can be repeatedly used in the same project, and the cost is saved.
Drawings
FIG. 1 is a schematic structural view of a drilling platform built before construction of the hanging box cofferdam of the invention;
FIG. 2 is an elevational view of the construction of the bell and spigot type distributor beam of the present invention;
FIG. 3 is a side view of the installation of the spigot and socket distributor beam construction of the present invention;
FIG. 4 is a plan view of the installation of the spigot and socket distributor beam construction of the present invention;
FIG. 5 is an exploded view of the drill floor panel construction of the present invention;
FIG. 6 is an overall view of a drilling platform panel construction of the present invention;
FIG. 7 is a schematic view of a tongue-and-groove joint of a drilling platform panel according to the present invention;
FIG. 8 is a structural diagram of the steel suspension box cofferdam of the present invention;
FIG. 9 is an elevation view of a steel suspension box cofferdam construction before lowering in the invention;
FIG. 10 is a top view of a steel suspension box cofferdam construction before lowering in accordance with the present invention;
FIG. 11 is an elevation view of a cofferdam construction of the steel suspension box after lowering the cofferdam of the invention;
FIG. 12 is a top view of the cofferdam construction of the steel suspension box after lowering the steel suspension box of the present invention;
fig. 13 is a plan view of the tie beam of the present invention after it has been cast.
Detailed Description
The features of the present invention and other related features are described in further detail below by way of example in conjunction with the following drawings to facilitate understanding by those skilled in the art:
referring to fig. 1-13, the symbols in the drawings are: the device comprises a drilling platform panel 1, a drilling platform longitudinal beam 2, a socket distribution beam 3, a bracket 4, a bolt 5, a non-perforated panel 6, a perforated panel 7, an elongated steel pipe column 8, a pile top cross beam 9, a hanging box cofferdam supporting beam 10, a hanging box cofferdam ring beam 11, a hanging box cofferdam side plate 12, a lowering system 13 and a hanging strip 14.
Example (b): as shown in fig. 1 to 13, the embodiment specifically relates to a method for quickly constructing a pile-column type foundation in water of a bridge, which includes:
(1) before the construction of the hanging box cofferdam, a drilling platform is built, the drilling platform comprises a drilling platform panel 1, a drilling platform longitudinal beam 2 and a socket distribution beam 3, and the structure of the drilling platform is shown in figure 1. Holes are reserved in the steel pipe piles before the socket distribution beams 3 are constructed, brackets 4 are welded to the steel pipe piles, the socket distribution beams 3 are inserted into the holes reserved in the steel pipe piles, and then the socket distribution beams 3 and the brackets 4 are screwed and fixed through bolts 5, as shown in fig. 2-4.
The drilling platform panel 1 comprises a panel 7 with holes and a panel 6 without holes, the panel 7 with holes and the panel 6 without holes are connected by adopting grooves and tongues, and the grooves and tongues are aligned and then fixed by adopting finish-rolled deformed steel bars in a counter-pulling way, as shown in figures 5, 6 and 7;
in addition, the drilling platform panel 1 can be used as a hanging box cofferdam bottom plate in the later stage, the drilling platform longitudinal beam 2 adopts I-steel or other steel beams, and the drilling platform longitudinal beam 2 can be used as a longitudinal beam of a hanging box bottom die in the later stage, so that the material can be used reversely.
(2) A drilling machine is arranged on the drilling platform, and a cast-in-situ bored pile is constructed;
(3) the drilling platform longitudinal beam 2 is used as a hanging box cofferdam longitudinal beam in an inverted mode, the drilling platform panel 1 is used as a hanging box cofferdam bottom plate in an inverted mode, and a hanging box cofferdam side plate 12, a hanging box cofferdam ring beam 11 and a hanging box cofferdam supporting beam 10 are well assembled on the inverted hanging box cofferdam bottom plate on the drilling platform to form a hanging box cofferdam; meanwhile, an elongated steel pipe column 8 is installed on the original steel pipe pile, a pile top beam 9 is welded on the top of the elongated steel pipe column 8, and the structural schematic diagram of the construction step is shown in fig. 8;
(4) installing a lowering system 13 on a pile top cross beam 9, hoisting the hanging box cofferdam formed in the step (3) by using a steel strand or finish-rolled deformed steel bar, unfastening bolts 5 between the socket distribution beams 3 and the brackets 4, drawing out the socket distribution beams 3 from holes of the steel pipe pile to leave a space for lowering the hanging box cofferdam, wherein the structural schematic diagram of the construction step is shown in fig. 9 and 10;
(5) lowering the suspension box cofferdam to a proper position by using a lowering system 13, restoring the socket distribution beam 3 from the hole of the steel pipe pile, fixing the socket distribution beam 3 on the steel pipe pile by using a bolt 5 again (specifically, welding a bracket on the steel pipe pile, inserting the socket distribution beam 3 into the reserved hole on the steel pipe pile, then screwing and fixing the socket distribution beam 3 and the bracket 4 by using the bolt 5), and fixing the suspension box cofferdam on the socket distribution beam 3 by using a hanging strip 14; the installed cofferdam of the hanging box is shown in figures 11 and 12;
(6) installing a steel cofferdam water stop device, pumping water in the cofferdam of the hanging box, then erecting a mould, and pouring a tie beam as shown in figure 13;
and finally, after the beam tying construction is finished, firstly disconnecting the connection between the hanging box cofferdam side plate 12 and the hanging box cofferdam longitudinal beam (namely the drilling platform longitudinal beam 2), hoisting the hanging box cofferdam side plate 12 away by using the lowering system 13, unscrewing the hanging box cofferdam bottom plate (namely the drilling platform panel 1) by a diver from the water for tongue-and-groove connection, realizing the blocking of the hanging box cofferdam bottom plate, hoisting the drilling platform panel 1 away by using the lowering system 13, and realizing the recycling of the hanging box cofferdam material.

Claims (5)

1.一种桥梁水中桩柱式基础快速施工方法,其特征在于,包括:1. a rapid construction method for a bridge water pile type foundation, is characterized in that, comprises: (1)在钢管桩的上端部开设预留孔洞,并于所述钢管桩对应于所述预留孔洞的外壁面上焊接牛腿,在相邻的两个所述钢管桩的所述预留孔洞中插入承插分配梁并经螺栓将所述承插分配梁同所述牛腿拧紧固定,在所述承插分配梁上方布置钻孔平台纵梁,并于所述钻孔平台纵梁上设置钻孔平台面板,所述钻孔平台面板、所述钻孔平台纵梁以及所述承插分配梁共同组成钻孔平台;(1) A reserved hole is opened at the upper end of the steel pipe pile, and the corbel is welded on the outer wall surface of the steel pipe pile corresponding to the reserved hole. Insert the socket distribution beam into the reserved hole and fasten the socket distribution beam with the corbel through bolts, arrange the drilling platform longitudinal beam above the socket distribution beam, and install the drilling platform on the drilling platform. A drilling platform panel is arranged on the longitudinal beam, and the drilling platform panel, the drilling platform longitudinal beam and the socket distribution beam together form a drilling platform; (2)在所述钻孔平台的上方设置钻机,利用所述钻机经所述钻孔平台面板上的预设圆孔向下施工钻孔灌注桩;(2) A drilling rig is arranged above the drilling platform, and the drilling rig is used to construct the bored cast-in-place pile downward through a preset circular hole on the panel of the drilling platform; (3)将所述钻孔平台纵梁倒用作为吊箱围堰纵梁,将所述钻孔平台面板倒用作为吊箱围堰底板,在所述钻孔平台上将吊箱围堰侧板、吊箱围堰圈梁、吊箱围堰支撑梁在倒用的吊箱围堰底板上拼装好,形成吊箱围堰;同时,在原有所述钢管桩上安装接长钢管柱,在所述接长钢管柱顶焊接桩顶横梁;(3) Use the longitudinal beam of the drilling platform upside down as the longitudinal beam of the hanging box cofferdam, use the drilling platform panel upside down as the bottom plate of the hanging box cofferdam, and place the cofferdam side of the hanging box on the drilling platform. The slab, the hanging box cofferdam ring beam and the hanging box cofferdam support beam are assembled on the inverted hanging box cofferdam floor to form the hanging box cofferdam; at the same time, the steel pipe column is installed on the original steel pipe pile, Weld the top beam on the top of the long steel pipe column; (4)在所述桩顶横梁上安装好下放系统,将所述吊箱围堰吊起,解开所述承插分配梁与所述牛腿之间的所述螺栓,从所述钢管桩的孔洞中抽出所述承插型分配梁,为下放所述吊箱围堰留下空间;(4) Install the lowering system on the pile top beam, hoist the hanging box cofferdam, unfasten the bolt between the socket distribution beam and the corbel, and remove the steel pipe from the steel pipe. The socket-type distribution beam is drawn out from the hole of the pile, leaving space for the lowering of the hanging box cofferdam; (5)用所述下放系统将所述吊箱围堰下放到位,将所述承插分配梁从钢管桩的孔洞中恢复原位,重新用所述螺栓将所述承插分配梁固定于所述钢管桩上,用吊带将所述吊箱围堰固定在所述承插分配梁上;(5) Use the lowering system to lower the hanging box cofferdam into place, restore the socket distribution beam from the hole of the steel pipe pile to its original position, and use the bolts to fix the socket distribution beam to the On the steel pipe pile, the hanging box cofferdam is fixed on the socket distribution beam with a sling; (6)安装钢围堰止水装置,在所述吊箱围堰内抽水然后立模,浇筑系梁。(6) Install the steel cofferdam water stop device, pump water in the hanging box cofferdam, then erect the formwork, and pour the tie beam. 2.根据权利要求1所述的一种桥梁水中桩柱式基础快速施工方法,其特征在于,所述系梁施工完成后,先解开所述吊箱围堰侧板与所述吊箱围堰纵梁的连接,用所述下放系统将所述吊箱围堰侧板吊走,由潜水员到水下拧开所述吊箱围堰底板用于企口连接的螺纹钢,实现吊箱围堰底板的分块,用下放系统将钻孔平台面板吊走,实现吊箱围堰材料的重复利用。2 . The rapid construction method for a bridge underwater pile foundation according to claim 1 , wherein after the construction of the tie beam is completed, the side plate of the cofferdam of the hanging box and the cofferdam of the hanging box are first unfastened. 3 . For the connection of weir longitudinal beams, the side plate of the cofferdam of the hanging box is lifted by the lowering system, and the bottom plate of the cofferdam of the hanging box is unscrewed by the diver to the water for the rebar connection to realize the cofferdam of the hanging box. The weir floor is divided into blocks, and the drilling platform panel is hoisted away by the lowering system to realize the reuse of the cofferdam material of the hanging box. 3.根据权利要求1所述的一种桥梁水中桩柱式基础快速施工方法,其特征在于,所述钻孔平台面板包括带孔面板和不带孔面板,所述带孔面板和不带孔面板相互之间采用企口连接,企口对齐后采用精轧螺纹钢对拉固定。3 . The rapid construction method for a bridge underwater pile foundation according to claim 1 , wherein the drilling platform panel comprises a panel with holes and a panel without holes, and the panel with holes and a panel without holes The panels are connected with each other by groove and mouth, and after the groove and mouth are aligned, they are fixed by precision-rolled rebar. 4.根据权利要求1所述的一种桥梁水中桩柱式基础快速施工方法,其特征在于,所述步骤(4)用钢绞线或精轧螺纹钢将所述吊箱围堰吊起。4 . The rapid construction method for a bridge underwater pile foundation according to claim 1 , wherein in the step (4), the hanging box cofferdam is hoisted with steel strands or finishing threaded steel. 5 . 5.根据权利要求1所述的一种桥梁水中桩柱式基础快速施工方法,其特征在于,所述步骤(5)重新用螺栓将所述承插分配梁固定于所述钢管桩上,具体为:将所述承插分配梁插入所述钢管桩上的所述预留孔洞中,然后采用螺栓将所述承插分配梁与所述牛腿拧紧固定。5 . The rapid construction method for a bridge underwater pile foundation according to claim 1 , wherein in the step (5), the socket and socket distribution beams are fixed on the steel pipe piles with bolts again, 6 . Specifically, the socket distribution beam is inserted into the reserved hole on the steel pipe pile, and then the socket distribution beam and the corbel are tightened and fixed with bolts.
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CN114892698A (en) * 2022-06-13 2022-08-12 中交第二航务工程局有限公司 Assembly type template for asymmetric double-inclined-pile cast-in-place bearing platform and construction method
CN115492141A (en) * 2022-10-21 2022-12-20 中铁二院工程集团有限责任公司 Steel suspension box cofferdam structure and bottom plate and construction method thereof
CN116005633A (en) * 2022-12-21 2023-04-25 保利长大工程有限公司 An interchangeable modular prefabricated pile foundation platform
CN117027641A (en) * 2023-08-29 2023-11-10 中铁十五局集团有限公司 Mechanical drilling method for rectangular anti-slide piles with expandable drilling and horizontal cantilevers

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