CN210562232U - A fore shaft sealing device and cofferdam for cofferdam - Google Patents
A fore shaft sealing device and cofferdam for cofferdam Download PDFInfo
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- CN210562232U CN210562232U CN201920607150.7U CN201920607150U CN210562232U CN 210562232 U CN210562232 U CN 210562232U CN 201920607150 U CN201920607150 U CN 201920607150U CN 210562232 U CN210562232 U CN 210562232U
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- cofferdam
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Abstract
The utility model discloses a fore shaft watertight fittings and cofferdam for cofferdam relates to bridge construction technical field, and the device includes stagnant water fore shaft stake, two at least steel pipe fasteners and two at least fastener pterygoid lamina, the steel pipe fastener includes the steel pipe and follows the incision that steel pipe length direction set up, the steel pipe is located stagnant water fore shaft stake is outer and follow stagnant water fore shaft stake length direction sets up, the steel pipe be used for with the cofferdam curb plate is fixed, be equipped with the stagnant water filler in the steel pipe, the fastener pterygoid lamina is followed stagnant water fore shaft stake length direction sets up, and passes incision and part are located in the steel pipe, the utility model discloses can seal fixedly between the adjacent cofferdam curb plate to reduce the probability that adjacent cofferdam curb plate junction appears leaking.
Description
Technical Field
The utility model relates to a bridge construction technical field, concretely relates to fore shaft watertight fittings and cofferdam for cofferdam.
Background
With the rapid development of the economy and the society of China, the construction scale of the high-speed railway bridge is continuously increased, the form of the bridge is changed day by day, and the bridge spanning the rivers of the great river is in the trend of construction. The method is influenced by the continuous improvement of the technical requirements of the high-speed heavy-duty railway bridge, the foundation investment of the bridge is larger and larger, the risk is higher and higher, and particularly the foundation construction in the deepwater area is always a difficult project in construction. How to efficiently and excellently complete basic construction in a complex hydrological environment is a primary task of bridge construction.
The cofferdam is used as a temporary facility for bridge foundation construction, and is mainly used as a water-resisting device for underwater foundation construction so as to carry out construction of a bearing platform and a pier body under anhydrous and safe conditions. The cofferdam can stop water for the construction of a bearing platform in a deep water area, greatly reduces the work load of mud suction and has small environmental pollution; the bearing platform concrete is constructed in a waterless environment, is not influenced by the water environment, and can ensure the construction quality.
Therefore, if the construction progress and the process safety quality control of the underwater main pier foundation need to be accelerated as much as possible, the crucial determining factor lies in the cofferdam, wherein whether the cofferdam leaks water directly determines the speed of the main pier foundation construction and determines the safety quality of the site, and the sealing performance between the adjacent cofferdam side plates of the existing cofferdam is poor, so that the situation of water leakage often occurs at the joint of the adjacent cofferdam side plates.
SUMMERY OF THE UTILITY MODEL
To the defect that exists among the prior art, the utility model aims to provide a fore shaft watertight fittings and cofferdam for cofferdam can improve the cofferdam condition of leaking.
In order to achieve the above purpose, the utility model adopts the technical proposal that:
in a first aspect, the utility model provides a fore shaft watertight fittings for cofferdam, the cofferdam includes a plurality of cofferdam curb plates, fore shaft watertight fittings is used for locating between adjacent two cofferdam curb plates, fore shaft watertight fittings includes:
a water-stopping locking pile;
the steel pipe fasteners comprise steel pipes and notches arranged along the length direction of the steel pipes, the steel pipes are arranged outside the water-stopping locking notch piles and arranged along the length direction of the water-stopping locking notch piles, the steel pipes are used for being fixed with the cofferdam side plates, and water-stopping fillers are arranged in the steel pipes;
at least two fastener pterygoid lamina, the fastener pterygoid lamina is followed stagnant water fore shaft stake length direction sets up, and passes the incision and part is located in the steel pipe.
On the basis of the technical scheme, the locking notch water stopping device further comprises a leakage stopping structure, the leakage stopping structure comprises an arc-shaped plate and a sealing bottom plate, the arc-shaped plate is connected with the small arc and the steel pipe fastener and forms a containing interval, the sealing bottom plate is arranged at the bottom of the containing interval, and concrete is arranged in the containing interval.
On the basis of the technical scheme, the water-stopping locking pile is divided into a large arc and a small arc with unequal arc lengths by the two fastener wing plates, and one side of the large arc is arranged outside the cofferdam.
On the basis of the technical scheme, a baffle plate with a width larger than that of the cut is arranged on one side, away from the water stop locking pile, of the fastener wing plate, and the baffle plate is located in the steel pipe.
On the basis of the technical scheme, the width of the notch is 1mm more than the thickness of the fastener wing plate.
On the basis of the technical scheme, the notch is a straight line.
On the basis of the technical scheme, the two fastener wing plates are positioned on the same plane.
On the basis of the technical scheme, the water-stopping filler is concrete.
In a second aspect, the present invention also provides a cofferdam, including:
a plurality of the locking port water stopping devices for the cofferdam;
the locking port water stopping device is arranged between every two adjacent cofferdam side plates, and the plurality of cofferdam side plates and the plurality of locking port water stopping devices are enclosed to form an accommodating space.
Compared with the prior art, the utility model has the advantages of:
the utility model provides a fore shaft watertight fittings for cofferdam through the mating reaction of stagnant water fore shaft stake and steel pipe fastener, can seal fixedly between adjacent cofferdam curb plate to reduce the probability that adjacent cofferdam curb plate junction appears leaking.
Drawings
Fig. 1 is a schematic structural view of a locking notch water stopping device in an embodiment of the present invention;
fig. 2 is a partially enlarged schematic view of a locking notch water stopping device in an embodiment of the present invention;
FIG. 3 is a schematic structural view of a steel tube fastener according to an embodiment of the present invention;
fig. 4 is a schematic structural view of a water-stop locking pile in the embodiment of the present invention.
In the figure: 1-water-stop locking pile, 2-steel pipe fastener, 21-steel pipe, 22-notch, 23-water-stop filler, 3-fastener wing plate, 31-baffle, 4-leaking stoppage structure, 41-arc plate and 5-cofferdam side plate.
Detailed Description
The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
Referring to fig. 1 and 2, an embodiment of the present invention provides a locking notch water stopping device for cofferdam, where the cofferdam includes a plurality of cofferdam side plates 5, the locking notch water stopping device is arranged between two adjacent cofferdam side plates 5, the locking notch water stopping device includes a water stopping locking pile 1, at least two steel pipe fasteners 2 and at least two fastener wing plates 3, the steel pipe fasteners 2 include steel pipes 21 and notches 22 arranged along the length direction of the steel pipes 21, the steel pipes 21 are arranged outside the water stopping locking pile 1 and arranged along the length direction of the water stopping locking pile 1, the steel pipes 21 are used for being fixed with the cofferdam side plates 5, and a water-stopping filler 23 is arranged in the steel pipe 21, preferably, the water-stopping filler 23 is concrete, the fastener wing plates 3 are arranged along the length direction of the water-stopping locking pile 1, the fastener wing plates 3 penetrate through the notch 22 and are partially positioned in the steel pipe 21, preferably, two fastener wing plates 3 are arranged, and the two fastener wing plates 3 are positioned on the same plane.
This fore shaft sealing device is when using, earlier with steel pipe 21 along length direction cutting out incision 22, and be fixed in steel pipe 21 on cofferdam curb plate 5, simultaneously, fixed fastener pterygoid lamina 3 on stagnant water fore shaft stake 1, carry out the operation in-process of inserting and beating to stagnant water fore shaft stake 1, make fastener pterygoid lamina 3 pass incision 22 and part be located steel pipe 21, the in-process of inserting and beating is transferred to stagnant water fore shaft stake 1 promptly, fastener pterygoid lamina 3 transfers along the length direction of incision 22, after stagnant water fore shaft stake 1 is transferred and is inserted and beat in place, concreting in steel pipe 21, thereby accomplish the sealing operation to between adjacent cofferdam curb plate 5, and then reduce the probability that adjacent cofferdam curb plate junction appears leaking, wherein, be sealing connection between steel pipe 21 and the cofferdam curb plate 5 and between fastener pterygoid lamina 3 and stagnant water fore shaft stake 1.
Referring to fig. 2, the locking notch water stopping device further includes a leakage stopping structure 4, the leakage stopping structure 4 includes an arc plate 41 and a bottom sealing plate, the arc plate 41 connects the small arc and the steel pipe fastener 2 and forms a containing zone, the bottom sealing plate is arranged at the bottom of the containing zone, concrete is arranged in the containing zone, when water is pumped in the cofferdam, and when a water leakage condition occurs between the steel pipe fastener 2 and the water stopping locking notch pile 1, firstly, cotton wool is filled in a gap at the water leakage position, and the arc plate 41 and the bottom sealing plate are welded by using an underwater welding method around the water leakage position, so that the water leakage position achieves the purpose of temporary water stopping, after the water level in the cofferdam descends, concrete is poured in a zone formed by welding the arc plate 41, the bottom sealing plate, the steel pipe fastener 2 and the water stopping locking notch pile 1, and the purpose of final.
Referring to fig. 1 and 4, the two fastener wing plates 3 divide the water-stop fore shaft pile 1 into a large arc and a small arc with unequal arc lengths, one side of the large arc is arranged outside the cofferdam, and when the water-stop fore shaft pile 1 is stressed, the bearing capacity of the water-stop fore shaft pile 1 can be increased due to the outward acting force generated under the action of the fastener wing plates 3, so that the water-stop fore shaft pile 1 can be satisfied in the environment with large external acting force.
Referring to fig. 1 and 3, one side of the fastener wing plate 3 away from the water-stop locking pile 1 is provided with a baffle 31 with a width larger than that of the notch, the baffle 31 is positioned in the steel pipe 21, the part of the fastener wing plate 3 can be positioned in the steel pipe 21 all the time, and the fastener wing plate 3 is prevented from being separated from the steel pipe 21 due to external factors, so that a gap is formed between the water-stop locking pile 1 and the steel pipe fastener 2, the water leakage condition of the cofferdam is further caused, and the probability of the water leakage condition of the cofferdam is correspondingly reduced.
Wherein, the width of incision 22 is 1mm more than the thickness of fastener pterygoid lamina 3, can guarantee that fastener pterygoid lamina 3 can pass this incision 22, and simultaneously, incision 22 is the straight line, can guarantee that fastener pterygoid lamina 3 transfers along the length direction of incision 22, and incision 22 has advanced the processing of polishing, and the further fastener pterygoid lamina 3 of being convenient for transfers the operation along the length direction of incision 22.
Referring to fig. 1 to 4, an embodiment of the present invention further provides a cofferdam, including:
a plurality of locking port water stopping devices for the cofferdam;
a plurality of cofferdam curb plates 5 are equipped with fore shaft sealing up device between adjacent cofferdam curb plate 5, and a plurality of cofferdam curb plates 5 and a plurality of fore shaft sealing up device enclose to close and form an accommodation space.
The construction method of the cofferdam comprises the following steps: the cofferdam is accurately positioned by implantation, the perpendicularity and plane position deviation of the cofferdam side plate 5 are strictly controlled, the smooth closure of the cofferdam is ensured, and the influence of water flow on the perpendicularity of the cofferdam side plate is eliminated.
Wherein, steel pipe fasteners 2 are required to be welded on two sides before the cofferdam side plate 5 sinks, the water-stopping fore shaft piles 1 are inserted and beaten one by one along with the sinking sequence of the cofferdam side plate 5, and the water-stopping fore shaft piles 1 are inserted and beaten on the cofferdam side plate 5 after the water-stopping fore shaft piles 1 are inserted and beaten; and in the inserting and driving process of the water-stopping fore shaft pile 1, the pile position and the verticality of the water-stopping fore shaft pile 1 are continuously detected, and the pile top elevation of the water-stopping fore shaft pile 1 is controlled.
After the cofferdam is transferred and assembled, the fine aggregate concrete is poured into the steel pipe 21, the pouring process needs to be careful, the pouring is compact, and a primary water stopping effect is achieved.
And (4) sucking mud to the designed elevation at the position higher than the designed elevation inside the cofferdam by using an air suction dredger, and backfilling cobbles at the position lower than the designed elevation inside the cofferdam.
The cofferdam need throw in the 5 outsides of cofferdam curb plate and fill sandbag banket in order to prevent to erode before the back cover, need clear up cofferdam outer wall and inner wall down before the back cover, make its surface not have earth and adhere to, prevent closely that draw water and finish the lower welt gap infiltration of cofferdam after appearing. The cofferdam bottom sealing concrete can be poured in separate compartments, and the pouring sequence of the bottom sealing concrete is that the filling is advanced from upstream to downstream.
Before the back cover concrete intensity reached the designing requirement, the cofferdam must not receive factors such as impact, interference and bearing extra load, ensures concrete intensity, wholeness and water proofness, wherein, the cofferdam receives to make under the easy welt appear great gap with the back cover concrete after assaulting, causes under the cofferdam welt infiltration, if the infiltration circumstances appears, need near under the cofferdam welt within range drilling slip casting of certain distance.
After the bottom sealing concrete reaches the designed strength, water pumping operation is started, water leakage occurs at the gap between the individual steel pipe fastener 2 and the water stopping locking pile 1 in the water pumping process or after water pumping, cotton wool can be filled in the gap, the arc-shaped plate 41 is welded by using an underwater welding method around the gap, so that the purpose of temporary water stopping is achieved, and after the water level in the cofferdam is lowered, concrete is poured in the interval formed by welding the arc-shaped plate 41, the bottom sealing plate, the steel pipe fastener 2 and the water stopping locking pile 1, so that the purpose of final water stopping is achieved.
The present invention is not limited to the above preferred embodiments, and any person can obtain other products in various forms without departing from the scope of the present invention, but any change in shape or structure is within the scope of protection.
Claims (9)
1. The utility model provides a fore shaft sealing device for cofferdam, the cofferdam includes a plurality of cofferdam curb plates (5), fore shaft sealing device is used for locating between adjacent two cofferdam curb plates (5), its characterized in that, fore shaft sealing device includes:
a water-stop locking pile (1);
the water-stopping locking pile comprises at least two steel pipe fasteners (2), wherein each steel pipe fastener (2) comprises a steel pipe (21) and a notch (22) arranged along the length direction of the steel pipe (21), the steel pipe (21) is arranged outside the water-stopping locking pile (1) and arranged along the length direction of the water-stopping locking pile (1), the steel pipe (21) is used for being fixed with a cofferdam side plate (5), and water-stopping fillers (23) are arranged in the steel pipe (21);
at least two fastener pterygoid lamina (3), fastener pterygoid lamina (3) are followed stagnant water fore shaft stake (1) length direction sets up, and pass incision (22) and part are located in steel pipe (21).
2. The locking notch sealing device for the cofferdam as recited in claim 1, characterized in that: the water-stopping locking pile (1) is divided into a large arc and a small arc with unequal arc lengths by the two fastener wing plates (3), and one side of the large arc is arranged outside the cofferdam.
3. A locking notch sealing device for cofferdam according to claim 2, wherein: the fore shaft water stopping device further comprises a leakage stopping structure (4), the leakage stopping structure (4) comprises an arc plate (41) and a sealing bottom plate, the arc plate (41) is connected with the small circular arc and the steel pipe fastener (2) to form a containing interval, the sealing bottom plate is arranged at the bottom of the containing interval, and concrete is arranged in the containing interval.
4. The locking notch sealing device for the cofferdam as recited in claim 1, characterized in that: fastener pterygoid lamina (3) are kept away from one side of stagnant water fore shaft stake (1) is equipped with and is greater than baffle (31) of incision width, just baffle (31) are located in steel pipe (21).
5. The locking notch sealing device for the cofferdam as recited in claim 1, characterized in that: the width of the notch (22) is 1mm more than the thickness of the fastener wing plate (3).
6. The locking notch sealing device for the cofferdam as recited in claim 1, characterized in that: the cut (22) is a straight line.
7. The locking notch sealing device for the cofferdam as recited in claim 1, characterized in that: the two fastener wing plates (3) are positioned on the same plane.
8. The locking notch sealing device for the cofferdam as recited in claim 1, characterized in that: the water-stopping filler (23) is concrete.
9. A cofferdam, characterized in that it comprises:
a plurality of locking port water stopping devices for cofferdam according to claim 1;
the cofferdam comprises a plurality of cofferdam side plates (5), wherein the locking notch water stopping devices are arranged between the adjacent cofferdam side plates (5), and the plurality of cofferdam side plates (5) and the plurality of locking notch water stopping devices are enclosed to form an accommodating space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920607150.7U CN210562232U (en) | 2019-04-29 | 2019-04-29 | A fore shaft sealing device and cofferdam for cofferdam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920607150.7U CN210562232U (en) | 2019-04-29 | 2019-04-29 | A fore shaft sealing device and cofferdam for cofferdam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210562232U true CN210562232U (en) | 2020-05-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920607150.7U Active CN210562232U (en) | 2019-04-29 | 2019-04-29 | A fore shaft sealing device and cofferdam for cofferdam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210562232U (en) |
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- 2019-04-29 CN CN201920607150.7U patent/CN210562232U/en active Active
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