CN1017360B - Working method for submerged pier foundation and its equipment - Google Patents
Working method for submerged pier foundation and its equipmentInfo
- Publication number
- CN1017360B CN1017360B CN 90100800 CN90100800A CN1017360B CN 1017360 B CN1017360 B CN 1017360B CN 90100800 CN90100800 CN 90100800 CN 90100800 A CN90100800 A CN 90100800A CN 1017360 B CN1017360 B CN 1017360B
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- Prior art keywords
- corral
- water
- equipment
- pier
- pile
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- Bridges Or Land Bridges (AREA)
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Abstract
The present invention relates to a construction method for submerged pier platforms, which is a construction method for submerged pier platforms or submerged platforms and submerged pier bodies of parts connected with the platforms. The upper part of a foundation pile is hermetically sheathed with a cofferdam and is provided with a pile cap, and prefabricated parts of a prefabricated pier platform are assembled on the pile cap then; the present invention greatly reduces construction cost, shortens construction period, has convenient construction, and is mainly used for the submerged construction of platform pier bodies of bridges. The present invention also provides a device which is a bottling sleeve type hanging cofferdam.
Description
Bridge pier bearing platform construction method is the underwater support table of bridge pier or the job practices that underwater support table reaches pier shaft in the part water that links to each other with cushion cap in the water, adopts the prefabricated on-the-spot job practices of building of installing, connect.Its equipment is the employed corral equipment of this method.
Bridge pier bearing platform construction method adopts the cofferdam that pier location is surrounded under water more in the existing water, and water in the cofferdam is extracted out, carries out dry work cushion cap and part pier shaft in the cofferdam.The changde, hunan Wushui River bridge that in 1987 Hunan highway association writes (striding footpath prestressed concrete box type continuous beam for 120 meters) construction technology is summed up a book, bridge pier bearing platform construction method and used cofferdam in the existing water of the 2nd～7,47～91,156～160 page of record, its method are with impaling in the lump reaching five steel casing foundation piles around the pier location more than the double-walled steel cofferdam is from the bottom to the water surface; Mud at the bottom of the cofferdam is discharged, and jar is annotated a large amount of back cover concretes at the bottom of the cofferdam; Water in the cofferdam is extracted out, rack template at the scene, on-the-spot dry work is built cushion cap and is positioned at the following pier shaft of water level; To arrive cushion cap, pier shaft all after the health, remove the cofferdam.It is long that the cofferdam time is set, and cofferdam turnover life cycle is long.The coxopodite in cofferdam can not be removed, and remains under water, and causes waste.The back cover in cofferdam will spend a large amount of concretes, and the site operation amount is big, long construction period, and construction costs height, work progress are vulnerable to the influence of natural environment.Especially for the construction of deep-water pier cushion cap, just difficult more, engineering quantity is bigger, and the cycle is longer, and cost is higher.Used cofferdam is the tubular that bilayer accompanies gusset, the more piece assembly unit.Coxopodite lower end, cofferdam is positioned at down water-bed, uses concrete plug.The cofferdam will under the bottom to more than the water surface, simultaneously corral simultaneously all around several stakes and the bridge pier, cofferdam structure is huge, make difficult, the cost height, on-site hoisting, splicing, dismantlement work amount are big.
The object of the present invention is to provide bridge pier bearing platform construction method and employed structure corral equipment little, easy to use thereof in a kind of easy construction, the cycle is short, expense the is low water.
Bridge pier bearing platform construction method in the water of the present invention is still corral is set, and extracts the water in the corral out, dry work in corral.And characteristics of the present invention are: at foundation pile top corral, envelope more than the foundation pile top is enclosed, the just existing cofferdam of the scope of corral sub-fraction is convenient to sealing, is convenient to construction; After water extraction in the corral, on the foundation pile top pile cover is set, form the hat joint that takes up pier cap, available concrete or steel bar concrete are built pile cover, and also weldable steel body pile cover also can be settled preformed pile cover; After removing corral, will have the pier cap prefabricated component assembly unit pile cover of Lian Zhukong; In stake top and Lian Zhukong, connect and fill, foundation pile and pier cap prefabricated component are even built up one.The present invention's pile cover of only in corral, constructing, the pier cap prefabricated component is prefabricated on the coast, and the site operation amount is few.Prefabricated component and foundation pile, pile cover are constructed simultaneously, and lifting is spliced, connected and build then, can significantly reduce construction period.Corral equipment is that dismountable turnover is used after setting up pile cover, and the corral process needn't be built a large amount of back cover concretes, and operating expenses reduces.
Corral is enclosed within above position, each foundation pile top respectively.The corral bottom is enclosed within around the foundation pile, and is tightly connected with foundation pile.Corral is suspended in the water and the water surface, rather than seat is put and is fixed on the bottom.Fixedly connected with foundation pile in the corral bottom, and with slit soft material plug for seal between corral bottom and the foundation pile.Also can between corral bottom and foundation pile, accompany sealing collar.Can extend upward pillar on stake top, pillar is connected with the top of corral, fixing corral, the corral bottom can with foundation pile optional position big envelope, form the dry work condition at any degree of depth place.The top of corral still is higher than the water surface, the above corral in foundation pile top is lived, and only enclose single foundation pile, and the scope of enclosing is little, the corral structure is less, and corral wall intensity can require lower, and wall thickness reduces, and corral weight alleviates greatly, be convenient to construction and installation, dismounting, and easily connect sealing, reduce construction costs.Only the low amounts of water in the corral is discharged, needn't discharge mud and build the back cover concrete, can be at foundation pile jacking row dry work pile cover, engineering quantity further reduces, and reduces engineering cost.For the foundation pile of concrete or steel bar concrete, connect the pile cover of building concrete or steel bar concrete on the stake top.For the steel bar concrete foundation pile of steel casing, can be in weldable steel hatting around the steel casing of stake top along the shape pile cover.Also can be located at the stake top to prefabricated driving cap.Pile cover can be the boss shape that raises up, also can be towards periphery the projection along shape.
Pile cover set up or health after, water-filling in corral preferably, and with its dismounting.The prefabricated component seat of cushion cap in the water and part bridge pier is placed on the pile cover that stake is pushed up, and the company of prefabricated component builds corresponding stake top, hole, and Lian Zhukong is positioned at stake and pushes up.When being prefabricated many of merogenesis, prefabricated component assembly unit seat should be placed on the pile cover on stake top as prefabricated component.As design just cushion cap be positioned at below the water surface, then only seat is put band and is connected and build the prefabricated cushion cap in hole.Bridge pier as design also has the part pier shaft to be positioned at the water surface when following, and then seat is put the prefabricated component of this part pier shaft and cushion cap.This part pier shaft and cushion cap can be prefabricated into one, but also merogenesis is prefabricated, and the assembly unit seat is placed on the pile cover then, but will have Lian Zhukong.Can be provided with sealing collar between each assembly unit face, and available soft material is filled in stifled.The seat bottom of pier cap prefabricated component is put and is pressed in pile cover, prefabricated component bottom and stake can lay sealing mat, sealing collar etc. between emitting.When big leak was arranged between them, soft materials such as available cotton blanket were filled in stifled.Water in the Lian Zhukong can be extracted out, carry out dry work, fill,, foundation pile and prefabricated component be connected build one prefabricated component and foundation pile serial connection on stake top and Lian Zhukong on stake top and Lian Zhukong.The on-the-spot filling construction amount of Lian Zhukong only accounts for few part of pier cap in the whole water, and is not to construct in corral, and it is more convenient to construct.Can the water in the Lian Zhukong not extracted out yet, directly in Lian Zhukong, fill in concrete.After concrete pressure in the hole was greater than external water pressure power, cleaning connected ponding and the laitance of building concrete upper surface in the hole, vibrates then, until having filled.So further minimizing construction volume reduces the engineering time, is convenient to construction, the reduction expense.
Equipment of the present invention-suspension type sleeve corral equipment, still the leg by tubular constitutes.Its design feature is: the leg bottom is the big envelope interface of closing in shape, forms the sleeve of closing in shape.The leg bottom is and foundation pile big envelope connector, needn't seat in the bottom, corral only encloses single foundation pile, the corral structure reduces greatly, the hydraulic pressure resistance ability improves, and can be made into individual layer, wall thickness is thinner, corral weight is lighter.Interface is generally circle, and interface can have the support of joint ring or backstop hydrosphere etc., forms sealing.With the supporting that is connected of foundation pile, can open screw in interface wall, screw is housed, connect supporting with screw, also can have the tighten ring of a circle.Also can be connected supporting by the tight socket of interface and foundation pile.Remove for the ease of suspension type sleeve corral equipment, suspension type sleeve corral equipment is generally assembled by polylith.Can adopt big envelope interface two parts flange of column casing and closing in shape to connect to form.Preferably adopt the semicircle sleeve of two butt joints to form.Joint can be managed orchid, connects with screw.Also can overlappingly connect with screw.Also available cranse two relative binds of semicircle sleeve together.Joint generally has sealing mat.Be connected to foundation pile for the ease of hanging sleeve, the lower end of corral bottom big envelope interface can be toroidal.And the upper end of corral is preferably with link, pushes up upwardly extending pillar with stake and is connected.Bottom at corral can be communicated with gutter, can discharge the ponding from seepage between corral interface and the foundation pile.The suspension type sleeve corral equipment that has gutter, the sealing of interface can require low, can reduce the requirement of corral equipment making, reduce the workload of stopping up the slit.
Compared with the prior art bridge pier bearing platform construction method and apparatus has following advantage in the water of the present invention:
1. can carry out dry work at the arbitrary height place, be more suitable for the pier cap construction of deepwater high pile, the site operation amount significantly reduces in the water, easy construction.Simultaneously, construction period shortens greatly, and has reduced construction costs widely.
2. employed suspension type sleeve corral device structure is little, easily makes, and expense is low, and can have enough to meet the need use repeatedly, is convenient to transportation, installation and removal.
3. the subaqueous work activity duration shortens, and has reduced the possibility that is subjected to effect of natural conditions, and it is more safe and reliable to construct, and can form the continuous productive process of construction.
In the accompanying drawing, Fig. 1 has represented the schematic diagram that fuses with a kind of prefabricated cushion cap of bridge pier bearing platform construction method construction in the water of the present invention and foundation pile, pier stud, and Fig. 2 is its vertical view.Fig. 3 has represented that a kind of suspension type sleeve corral equipment hangs the structural representation that is trapped among foundation pile, and Fig. 4 is its vertical view.
Below in conjunction with the example of accompanying drawing, further specify bridge pier bearing platform construction method and employed corral device structure in the water of the present invention.In this example, employed suspension type sleeve corral equipment is that steel leg 4 butt joint by two semicircle tubulars forms.Joint has flange, adopts flange 5 to connect.Accompany sealing mat between the flange.The lower end of leg 4 is the interface 7 of right angle closing in shape, and interface is circular.Interface wall has screw, is fitted with to hold out against screw 6.The interface wall inboard is connected with all back-up rings 8, is used to stop fixedly sealing cotton blanket.Formed the big envelope interface 7 of leg bottom like this at the interface of right angle closing in shape.The interface lower end is a circular horn shape 10.Leg bottom more than closing up has outfall 9, and is communicated with gutter 3, forms the discharge structure of leg bottom.Also be connected with the supporting operation frame of downward extension at leg bottom outer wall, the top is connected with the cross crossbearer 1 of intersection on leg simultaneously, is provided with working platform 2 on leg around the top.The job practices of this example is undertaken by following.With aforesaid suspension type sleeve corral equipment hanging sleeve at steel casing steel bar concrete foundation pile 11, the big envelope interface of bottom is enclosed within steel casing steel bar concrete foundation pile 11 tops, and screw 8 is screwed into, and holds out against at steel casing 12, suspension type sleeve corral equipment is connected the location, be suspended on above position, foundation pile top.For greater safety, the cross 1 that pushes up on the leg is fixing with upwardly extending steel casing 12 welding.With cotton blanket from horn mouth 10 to top plug, and stopped fixingly by back-up ring 8, the slit shutoff between interface 7 and the steel casing, make suspension type sleeve corral equipment big envelope on foundation pile 11 tops.Water in the leg is extracted out by gutter.On foundation pile 11 tops, the steel casing of pad is cut out four windows, around the reinforcing bar of foundation pile is guided to, and at foundation pile top application worker placing steel bar concrete pile cover 13.Pile cover is projection towards periphery, is along the shape pile cover.Fixing with concrete on pile cover simultaneously by putting a circle sealing collar.After pile cover 13 healths, then set up pile cover.Upwardly extending steel casing and foundation pile coupling part are cut, unclamp the screw 6 of corral equipment two halves abutted flange screw and big envelope interface, divide partly the steel casing 12 of suspension type sleeve corral equipment and incision to be removed and hang away.Before this, the prefabricated cushion cap 16 on bank ground, cushion cap have two corresponding with two foundation piles 11 respectively companies and build hole 17, Lian Zhukong be big down little trapezoidal.This cushion cap is that cushion cap and pier stud straining beam (also can regard the entity pier shaft part of mixing bridge pier as) are lumped together, promptly plays the effect of cushion cap, doublely again plays the resistant to bending straining beam of bridge pier and anti-floating is moved the effect of thing collision protection platform.Prefabricated cushion cap 16 is hung in place, seat is at pile cover 13, connects to build 17 pairs in hole and be positioned at foundation pile and pile cover top 15.Sealing collar is clipped at the bottom of the prefabricated cushion cap and between the pile cover 14, shutoff between the two.As also having bigger seepage, available cotton blanket is filled at the bottom of the prefabricated cushion cap and between the pile cover 14, is carried out leak stopping.The company of extraction out builds water in the hole 17.In Lian Zhukong, lay reinforcing steel bar cage, and connect, in Lian Zhukong, pour into concrete, fill, in Lian Zhukong, fill full steel bar concrete 20 with the reinforcing bar nation that stretches out on stake top.Just foundation pile 11 and prefabricated cushion cap are even built up one after the health, finish the construction of pier cap in the water.Cushion cap upper end is higher than the water surface, can connect the make progress pier stud 21 of construction reinforced bar concrete of the position of building the hole at cushion cap subsequently.
Claims (8)
1, bridge pier bearing platform construction method in a kind of water is characterized in that:
A. foundation pile top corral is got up,
B. discharge water in the above-mentioned corral, pile cover be set on the foundation pile top,
C. after removing corral, the pier cap prefabricated component that will have Lian Zhukong is assembled in pile cover,
D. in stake top and Lian Zhukong, connect and fill.
2, according to bridge pier bearing platform construction method in the said water of claim 1, it is characterized in that: build the steel bar concrete pile cover of projection towards periphery in the foundation pile top casting.
3, according to bridge pier bearing platform construction method in the said water of claim 1, it is characterized in that: fixedlys connected with the pillar that expenditure is gone up on the stake top in corral top.
4, according to bridge pier bearing platform construction method in claim 1 or the 2 or 3 said water, it is characterized in that: accompany sealing collar between below pile cover and pier cap prefabricated component, water in the Lian Zhukong of pier cap prefabricated component is extracted out, in stake top and Lian Zhukong, connected again and fill.
5, the used suspension type sleeve corral equipment of a kind of method according to claim 1 is made of the leg of tubular, and it is characterized in that: the leg bottom is the big envelope interface of closing in shape.
6, according to the said suspension type sleeve of claim 5 corral equipment, it is characterized in that: the leg of tubular is made up of the semicircle sleeve of two butt joints.
7, according to the said suspension type sleeve of claim 5 corral equipment, it is characterized in that: the lower end of big envelope interface is a toroidal.
8, according to claim 5 or 6 or 7 said suspension type sleeve corral equipment, it is characterized in that the leg bottom is communicated with gutter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90100800 CN1017360B (en) | 1990-02-16 | 1990-02-16 | Working method for submerged pier foundation and its equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90100800 CN1017360B (en) | 1990-02-16 | 1990-02-16 | Working method for submerged pier foundation and its equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1053273A CN1053273A (en) | 1991-07-24 |
| CN1017360B true CN1017360B (en) | 1992-07-08 |
Family
ID=4876805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90100800 Expired CN1017360B (en) | 1990-02-16 | 1990-02-16 | Working method for submerged pier foundation and its equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1017360B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101871217B (en) * | 2009-04-23 | 2013-12-18 | 润弘精密工程事业股份有限公司 | Method for connecting precast pile cap structure and connected structure thereof |
| CN102220742B (en) * | 2011-04-20 | 2012-04-18 | 重庆交通建设(集团)有限责任公司 | Construction method of deformable template of variable cross-section high pier |
| CN102767189B (en) * | 2012-07-31 | 2014-06-25 | 中铁第五勘察设计院集团有限公司 | Set bearing platform foundations and construction method thereof |
| CN103374923A (en) * | 2013-07-25 | 2013-10-30 | 天津二十冶建设有限公司 | Method for prefabricating and mounting underwater pier |
| CN104775446B (en) * | 2014-01-15 | 2021-06-15 | 广东海上城建控股发展有限公司 | Barrel pier for fixing water structure and installation and construction method thereof |
| CN107476201B (en) * | 2017-09-26 | 2019-03-01 | 万智彬 | Bridge pier installs equipment in a kind of water |
| CN108104142A (en) * | 2017-12-01 | 2018-06-01 | 苏州园林设计院有限公司 | A kind of construction method in water middle sleeve cofferdam |
| CN110067203B (en) * | 2019-04-19 | 2021-01-26 | 中交二航局第二工程有限公司 | Pier body bent cap hanging bracket applied to strong-surge low-pier area |
-
1990
- 1990-02-16 CN CN 90100800 patent/CN1017360B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN1053273A (en) | 1991-07-24 |
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