CN201158821Y - Cofferdam of steel pouring jacket - Google Patents

Cofferdam of steel pouring jacket Download PDF

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Publication number
CN201158821Y
CN201158821Y CNU2008200180470U CN200820018047U CN201158821Y CN 201158821 Y CN201158821 Y CN 201158821Y CN U2008200180470 U CNU2008200180470 U CN U2008200180470U CN 200820018047 U CN200820018047 U CN 200820018047U CN 201158821 Y CN201158821 Y CN 201158821Y
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CN
China
Prior art keywords
steel
panel
coxopodite
boxed cofferdam
nodal
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.)
Expired - Lifetime
Application number
CNU2008200180470U
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Chinese (zh)
Inventor
范效滨
王书明
胡信
侯金福
单学民
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Shandong Luqiao Group Co Ltd
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Shandong Luqiao Group Co Ltd
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Publication date
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Priority to CNU2008200180470U priority Critical patent/CN201158821Y/en
Application granted granted Critical
Publication of CN201158821Y publication Critical patent/CN201158821Y/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model relates to a steel boxed cofferdam, in particular to a steel open caisson. The steel open caisson comprises an upper segment and a lower segment which are connected with a water sealing angle steel flange, wherein the upper segment comprises upper segment panels which are made of steel sheets, and vertical ribs are evenly distributed in cross direction of the upper segment, and horizontal ribs are evenly and vertically distributed, the upper segment panels are connected through the water sealing angle steel flange, the lower segment comprises lower segment panels which are made of steel sheets, and vertical ribs are transversely and evenly distributed on the lower segment panels, and the lower segment panels are detachably and tightly connected. The utility model has the advantages of a traditional sunk well and a steel plate cofferdam, which can be repeatedly used, has less influence to adjacent buildings, and can bear bigger load, and has low production cost, little soil excavating amount, deeper sunk well basic embedment, excellent stability and excellent water sealing effect.

Description

A kind of steel boxed cofferdam
(1) technical field
The utility model relates to a kind of steel boxed cofferdam, especially is applied to the steel boxed cofferdam of deep foundation, Longspan Bridge cushion cap and the construction of rammer post.
(2) background technology
In recent years along with the growth of transport need, the increase of bridge span and the increase of basic underwater penetration, especially in recent years the straits, bay, stride the rivers bridge and constantly build, requirement to the deep water foundation construction also improves constantly, by initial caisson, open caisson foundation, develop into cylinder pile foundation, various combination foundation, arrive forms such as all kinds of pile foundations, two cushion cap cylinder pile foundation, multicolumn basis, ground continuous wall base again, to adapt to the construction condition of numerous and complicated.Recent statistics shows, caisson, open caisson foundation are used very outstanding, and usually adopts the cofferdam method to carry out cushion cap and the construction of rammer post in high near, the shallow sea of the great rivers that The water is deep and the current fast or tidal bore wave.
Building of bridge bearing platform and rammer post, main difficulty are waterproof, anti-soil, also want protection against erosion, landslide etc. sometimes, and the construction of bridge bearing platform and rammer post usually adopts the cofferdam method to construct under this condition at present.The cofferdam is meant the cofferdam structure form and the job practices of construction.Comparatively speaking, the used steel plate in metal sheet pile cofferdam is in civil engineering construction, for building permanent installation, the provisional space enclosing structure of building.Its effect is the position of building that anti-sealing or soil enter works yet to be built, so that at the cofferdam internal drainage, excavation pit is built works.Generally be mainly used in the civil engineering, except that the part as formal works, the cofferdam generally uses up the back and removes.The present general both arms steel boxed cofferdam that adopts in the big Oversea bridge construction of large span, basic underwater penetration, in view of in seawater, using steel sheet-pile cofferdam to be subjected to tidal effect, fore shaft is in extruding, does not have in the cycle period of pressure, stagnant water effect is relatively poor, the influence of the factors such as being subjected to Artificial Control is irregular, water pump fault of drawing water causes seawater to contact with maritime concrete too early, reduces the antiseptic property of maritime concrete.In the cross a river bridge construction, also can run into same problem, and be subjected to condition effect such as the bridge location place hydrology, navigation channel, can not adopt a kind ofly to be applicable to that all bridge foundation amounts are big, construction volume is bigger, and at present all from external import, one-time investment is bigger at metal sheet pile that China uses.
The steel boxed cofferdam method is a kind of pattern of bridge foundation construction.Process casing piece spare at first on land, i.e. steel bushing case, then under the going along with sb. to guard him of casing sidewall by in the cofferdam, constantly cutting the earth, steel boxed cofferdam is sunk under the deadweight effect gradually, reach the predetermined design absolute altitude after, carry out back cover again, construct internal construction.It is widely used in bridge foundation.Its advantage is technical safer reliable, and the shoveling amount is few, and is smaller to the influence of adjacent structure, and coffered foundation is embedding darker, good stability.The steel boxed cofferdam that but is embedded at present in the soil all is disposable use, can waste a large amount of goods and materials.
(3) summary of the invention
The utility model provides a kind of reusable steel boxed cofferdam in order to overcome the deficiency of above technology.
The utility model is by the following technical solutions:
A kind of steel boxed cofferdam of this utility model comprises joint and coxopodite, passes through the angle steel flange bolt of water-stop between the two; Last joint comprises that material is the last nodal section plate of steel sheet material, and it laterally is evenly equipped with vertical rib, vertically is evenly equipped with horizontal ribs, is connected to the angle steel flange bolt of water-stop between last nodal section plate; Coxopodite comprises that material is the coxopodite panel of steel sheet material, and the coxopodite panel laterally is evenly equipped with vertical rib, and the chamfer putting steel tube structure by water-stop between the coxopodite panel connects.
Above-mentioned steel boxed cofferdam, the described joint elevation of going up is higher than its maximum tidal level value when user mode, the embedded depth of coxopodite height during greater than the steel boxed cofferdam user mode.Weld entirely for plug welding between described angle steel flange and last, the coxopodite panel and be connected; Described vertical rib is a channel-section steel, and described cross rib is an i iron, and vertical rib is welded on the nodal section plate, and cross rib is welded on the vertical rib.Described adjacent going up between the nodal section plate is provided with brace summer, and brace summer is positioned at nodal section plate top and is higher than basic elevation; The described nodal section plate of going up vertically is provided with vertical support primary structure member, and this vertically supports primary structure member is that bolton is connected with described support beam end; Last nodal section plate bottom arranged outside has truss.For the chamfer putting steel tube constitution water is tightly connected, the coxopodite panel is about two-layer panel between described coxopodite panel, described vertical rib between two-layer panel, and with its welding, described vertical rib is a channel-section steel.Its inner panel is corresponding with described last nodal section plate, and the outer side panel top of coxopodite panel is shorter than its inner panel, leaves the space.
Above-mentioned steel boxed cofferdam angle steel flange, bolt water-stop adopt the sponge rubber sealing or adopt the sealing of Expansion sealing band.Described chamfer putting steel tube structure adopts butter: the miscella fat of clay=1: 1 spreads upon chamfer putting steel tube tube seat inboard, constitutes sealing with the steel pipe of chamfer putting steel tube structure.
The utility model steel boxed cofferdam comprises joint and coxopodite two large divisions, be convenient to transportation and install, and both is convenient to dismounting for the bolt connection, is beneficial to repeated use.Last saving owing to the pressure that will bear the water of opposing, tidal force etc., desired strength is big, and rib adopts laterally uniform vertical rib, vertical uniform horizontal ribs, and coxopodite does not need to bear so many pressure, its rib is only at horizontal uniform vertical rib.And between last nodal section plate, and adopt all between floor board that water-stop is removable to be fastenedly connected,, be beneficial to construction and carry out smoothly to guarantee the watertightness of steel boxed cofferdam.Because all can dismounting between this each critical piece of utility model steel boxed cofferdam, can reuse, overcome original cofferdam bury part can only expendable shortcoming.This steel boxed cofferdam is with respect to conventional steel sheet-pile cofferdam structure compactness, guarantee under the situation of structural strength, the use steel material is few, described each parts all can be in factory process, assembly unit is used then, construction volume is few, and different construction sections can use similar steel boxed cofferdam in an engineering, and is more flexible than cofferdam method.And this utility model adopts the water-stop of angle steel flange to connect, and is insensitive to the influence of tidal force, is not easy to cause the fatigue damage of its sealing, and stagnant water effect is good.Adopt butter in addition between the coxopodite panel: clay is that 1: 1 ointment is applied in the sealing means in the chamfer putting steel tube, directly pegs graft between panel, and is easy and stagnant water effect good.
(4) description of drawings
Fig. 1 looks schematic diagram for the utility model steel boxed cofferdam structure master.
Fig. 2 is the utility model steel boxed cofferdam structure schematic top plan view.
Fig. 3 looks schematic diagram for joint side structure master on the utility model steel boxed cofferdam.
Fig. 4 is a joint side A-A cross-sectional schematic on the utility model steel boxed cofferdam.
Fig. 5 is a joint side B-B cross-sectional schematic on the utility model steel boxed cofferdam.
Fig. 6 is a joint side C portion enlarged diagram on the utility model steel boxed cofferdam.
Fig. 7 looks schematic diagram for the utility model steel boxed cofferdam coxopodite structure master.
Fig. 8 is the utility model steel boxed cofferdam coxopodite structure schematic top plan view.
Fig. 9 is the utility model steel boxed cofferdam coxopodite structure Z portion enlarged diagram.
Figure 10 is the utility model steel boxed cofferdam coxopodite structure Y portion enlarged diagram.
Among the figure, 1, go up joint, 2, go up the nodal section plate, 3, vertical rib, 4, horizontal ribs, 5, brace summer, 6, vertically support primary structure member, 7, coxopodite, 8, the coxopodite panel, 9, vertical rib, 10, truss, 11, angle steel flange, 12, the chamfer putting steel tube structure, 13, the space.
(5) specific embodiment
Embodiment 1:
With reference to Figure of description 1 to 10, the utility model steel boxed cofferdam comprises joint 1 and coxopodite 7, and both carry out bolt by the angle steel flange of water-stop, guarantees the watertightness in the work progress, prevents that cushion cap and rammer post etc. from contacting with water too early, influences its application life; Last joint comprises that material is the last nodal section plate 2 of steel sheet material, and these parts are as main water blocking member, and it laterally is evenly equipped with vertical rib 3, vertically is evenly equipped with horizontal ribs 4, and rib is mainly strengthened caisson structure intensity, with the influence to open caisson of the opposing pressure of water and tidal force.Carry out bolt by water-stop angle steel flange 11 between each piece panel of last joint, guarantee percolation-proof simultaneously, the ability of angle steel flange resisting fatigue stress is higher than normal other structures that adopt in traditional cofferdam, is not easy to damage.It is that the coxopodite panel 8 of steel sheet material is as main water blocking member that coxopodite adopts material, the coxopodite panel laterally is evenly equipped with vertical rib 9, to increase its structural strength, be that water-stop chamfer putting steel tube structure connects between the coxopodite panel, more convenient dismounting, and steel boxed cofferdam is not very big to the coxopodite requirement of strength, and this structure is finished and can be satisfied.So-called chamfer putting steel tube structure connects and is meant that the part in connector two parts is a round steel pipe, and another part is the circular steel tube seat, and its medial surface cooperates with another part lateral surface adds airtight and watertight padding and promptly constitute hermetically-sealed construction.Adopt releasable connection between each parts, be convenient to dismounting, be beneficial to reuse.In the utility model, the used airtight and watertight padding of chamfer putting steel tube structure is a butter: the miscella fat of clay=1: 1.
Above-mentioned steel boxed cofferdam, described joint 1 elevation of going up is higher than its maximum tidal level value when user mode, guarantee can not occur in the work progress overflowing aqueous condition, the embedded depth of described coxopodite 7 height during greater than the steel boxed cofferdam user mode, when guaranteeing embedded depth, also can make things convenient for and go up the dismounting of joint like this.Weld entirely for plug welding between described angle steel flange 11 and last, the coxopodite panel and be connected, to guarantee its structural strength.Described vertical rib 3 is a channel-section steel, and described cross rib 4 is an i iron, adopt these standard components to help processing, and its compact conformation, intensity is big, can satisfy instructions for use fully.Vertical rib is welded in described going up on the nodal section plate 2, and cross rib is welded on the vertical rib.And be the pressure of opposing water, described adjacent 2 of the nodal section plates of going up are provided with brace summer 5, and brace summer is positioned at nodal section plate top and it highly is higher than basic elevation, and last nodal section plate 2 bottom arranged outside have truss.Brace summer is arranged at top is higher than basic elevation, can not influence construction.The described nodal section plate 2 of going up vertically is provided with vertical support primary structure member 6, and this vertically supports primary structure member and described brace summer 5 ends are fastenedly connected for the bolt water-stop.
Above-mentioned steel boxed cofferdam, described coxopodite panel 8 is about two-layer panel, described vertical rib 9 between two-layer panel, and with its welding, described vertical rib 9 is a channel-section steel, can guarantee like this to make its compact conformation under the situation of its structural strength.Described coxopodite panel 8 inner panel are corresponding with described last nodal section plate 2, guarantee that the steel boxed cofferdam medial surface is an integral body, be convenient to construction, the outer side panel top of coxopodite panel is shorter than its inner panel, leave space 13, certain space is arranged when being convenient to workman's mounting flange bolt.Water-stop adopts sponge rubber sealing, this good sealing effect between the above each member.It is the steel plate of 5mm that the steel boxed cofferdam panel adopts thickness, can both satisfy in the existing construction requirement of strength to it basically.
Embodiment 2:
With reference to Figure of description 1 to 10, the utility model steel boxed cofferdam structure is the same with embodiment 1, and water-stop adopts the zone of swelling sealing between its each member, is convenient to install and use.
If adopt the metal sheet pile cofferdam, according to dimension of platform is 6.45m * 6.45m, for satisfying antiseptic concrete and cushion cap formwork support arrangement construction requirement, reserve the 1m operating space between cushion cap and metal sheet pile, consider that the metal sheet pile height is 15.5cm, the sinking steel sheet pile is an odd number, presses the 9.2m value, the waling setting one simultaneously, and every total engineering quantity steel quantity consumption in metal sheet pile cofferdam is 112.64t like this.And if adopt the utility model steel boxed cofferdam, then steel boxed cofferdam adopts 8.05m * 8.05m, and is high 7 meters, can meet the demands, total steel quantity consumption is 32.08t.Adopt the utility model steel boxed cofferdam steel quantity consumption to be starkly lower than the metal sheet pile cofferdam, corresponding engineering quantity also can reduce in a large number, the also corresponding steel natural wastage that has reduced each engineering simultaneously.
Certainly the utility model water-stop mode is not limited to above-mentioned dual mode, can also adopt other sealing means, adopts rubber seal such as simple, perhaps resin-sealed pad etc.
The utility model steel boxed cofferdam can be done rectangularity, circle or other shape and structure according to the construction needs.The cross rib of the steel boxed cofferdam of circular configuration also is and the corresponding circular rib of its panel.

Claims (8)

1. steel boxed cofferdam is characterized in that: comprise joint (1) and coxopodite (7), between the two angle steel flange (11) bolt by water-stop; Last joint comprises that material is the last nodal section plate (2) of steel sheet material, and it laterally is evenly equipped with vertical rib (3), vertically is evenly equipped with horizontal ribs (4), angle steel flange (11) bolt by water-stop between last nodal section plate; Coxopodite comprises that material is the coxopodite panel (8) of steel sheet material, and the coxopodite panel laterally is evenly equipped with vertical rib (9), and the chamfer putting steel tube structure (12) by water-stop between the coxopodite panel connects.
2. steel boxed cofferdam according to claim 1 is characterized in that: described joint (1) elevation of going up is higher than its maximum tidal level value when user mode, the embedded depth of described coxopodite (7) height during greater than the steel boxed cofferdam user mode.
3. steel boxed cofferdam according to claim 1 is characterized in that: weld entirely for plug welding between described angle steel flange (11) and last, the coxopodite panel and be connected; Described vertical rib (3) is a channel-section steel, and described cross rib (4) is an i iron, and vertical rib is welded on the nodal section plate (2), and cross rib is welded on the vertical rib.
4. steel boxed cofferdam according to claim 3 is characterized in that: described adjacent going up between nodal section plate (2) is provided with brace summer (5), and brace summer is positioned at nodal section plate top and is higher than basic elevation; The described nodal section plate (2) of going up vertically is provided with vertical support primary structure member (6), and this vertically supports primary structure member is that bolton is connected with described brace summer (5) end; Last nodal section plate (2) bottom arranged outside has truss (10).
5. steel boxed cofferdam according to claim 1 is characterized in that: described coxopodite panel (8) is about two-layer panel, described vertical rib (9) between two-layer panel, and with its welding, described vertical rib (9) is a channel-section steel.
6. steel boxed cofferdam according to claim 5 is characterized in that: described coxopodite panel (8) inner panel is corresponding with described last nodal section plate (2), and the outer side panel top of coxopodite panel is shorter than its inner panel, leaves space (13).
7. steel boxed cofferdam according to claim 1 is characterized in that: the angle steel flange of described water-stop (11) is the structure of folder sponge rubber between angle steel flange.
8. steel boxed cofferdam according to claim 1 is characterized in that: the angle steel flange of described each water-stop (11) is the structure of folder zone of swelling between angle steel flange.
CNU2008200180470U 2008-02-27 2008-02-27 Cofferdam of steel pouring jacket Expired - Lifetime CN201158821Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2008200180470U CN201158821Y (en) 2008-02-27 2008-02-27 Cofferdam of steel pouring jacket

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2008200180470U CN201158821Y (en) 2008-02-27 2008-02-27 Cofferdam of steel pouring jacket

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CNU2008200180470U Expired - Lifetime CN201158821Y (en) 2008-02-27 2008-02-27 Cofferdam of steel pouring jacket

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101886397A (en) * 2010-07-09 2010-11-17 中铁十局集团有限公司 Special-shaped steel cofferdam
CN102116032A (en) * 2010-12-31 2011-07-06 中铁大桥局集团第四工程有限公司 Method for closing bottom of steel boxed cofferdam and gaps among river beds
CN102359115A (en) * 2011-08-04 2012-02-22 中国水利水电第七工程局有限公司 Caisson-type flow divider
CN107201748A (en) * 2017-06-16 2017-09-26 中交航局第三工程有限公司 Circle caisson encased steel plate construction technology

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101886397A (en) * 2010-07-09 2010-11-17 中铁十局集团有限公司 Special-shaped steel cofferdam
CN101886397B (en) * 2010-07-09 2013-04-17 中铁十局集团有限公司 Special-shaped steel cofferdam
CN102116032A (en) * 2010-12-31 2011-07-06 中铁大桥局集团第四工程有限公司 Method for closing bottom of steel boxed cofferdam and gaps among river beds
CN102116032B (en) * 2010-12-31 2012-11-28 中铁大桥局集团第四工程有限公司 Method for closing bottom of steel boxed cofferdam and gaps among river beds
CN102359115A (en) * 2011-08-04 2012-02-22 中国水利水电第七工程局有限公司 Caisson-type flow divider
CN107201748A (en) * 2017-06-16 2017-09-26 中交航局第三工程有限公司 Circle caisson encased steel plate construction technology
CN107201748B (en) * 2017-06-16 2019-07-05 中交一航局第三工程有限公司 Circle caisson encased steel plate construction technology

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